阅读说明：本技术 一种用于楼梯节点连接的耗能转动式连接方法 (Energy-consumption rotary type connection method for stair node connection ) 是由 王伟 戴梦丹 宋林涛 裘李祥 李娜 成次次 于 2019-10-17 设计创作，主要内容包括：本发明涉及装配式预制楼梯施工领域,具体公开了一种用于楼梯节点连接的耗能转动式连接方法,包括如下步骤：(1)预制构件；(2)铺设水平阻尼隔震层；(3)安放预制楼梯端；(4)连接底部转动钢板；(5)填充空隙；(6)连接顶部转动钢板。依本发明的连接方法连接的转动钢板既能提供一定的转动,又能提供竖向约束和水平约束,在楼梯受到震动时,阻尼抗震层提供一定的形变,转动钢板可提供一定的转动量,阻尼抗震层配合转动钢板,有效提高了楼梯的抗震性能。(The invention relates to the field of construction of prefabricated stairways, and particularly discloses an energy-consumption rotary type connection method for connection of stairway joints, which comprises the following steps: (1) prefabricating a component; (2) laying a horizontal damping shock insulation layer; (3) placing a prefabricated stair end; (4) connecting a bottom rotating steel plate; (5) filling the gap; (6) the top rotating steel plate is connected. The rotating steel plates connected according to the connecting method can provide certain rotation, vertical constraint and horizontal constraint, when the stairs are vibrated, the damping anti-seismic layer provides certain deformation, the rotating steel plates can provide certain rotation amount, and the damping anti-seismic layer is matched with the rotating steel plates, so that the anti-seismic performance of the stairs is effectively improved.)

1. An energy-consumption rotary type connecting method for connecting stair joints is characterized by comprising a prefabricated stair end and a prefabricated platform beam, wherein an L-shaped notch is formed in one side of the prefabricated platform beam, and the shape of the bottom of the prefabricated stair end is matched with the L-shaped notch; the connecting method comprises the following steps:

(1) the prefabricated part:

(1-1) pre-buried prefabricated staircase components: arranging a plurality of tread embedded steel plates at the edges of the treads of the prefabricated stair ends along the width direction; arranging a plurality of ladder section back embedded steel plates at the bottom edge of the prefabricated ladder end along the width direction;

(1-2) pre-embedding a prefabricated platform beam component: arranging a plurality of beam top embedded steel plates on the edge of the top surface of the precast platform beam close to the L-shaped gap along the width direction, wherein the beam top embedded steel plates correspond to the tread surface embedded steel plates one to one; arranging a plurality of beam side embedded steel plates on the edge of the side surface of the precast platform beam close to the L-shaped gap along the width direction, wherein the beam side embedded steel plates correspond to the embedded steel plates on the back surface of the ladder section one by one;

(2) laying a horizontal damping shock insulation layer: laying a horizontal damping shock insulation layer on the horizontal plane of the L-shaped notch of the prefabricated platform beam;

(3) placing a prefabricated stair end: hoisting the prefabricated stair end and placing the prefabricated stair end at the L-shaped notch of the prefabricated platform beam, and keeping a gap between the side surface of the prefabricated stair end and the vertical surface of the L-shaped notch;

(4) connecting a bottom rotating steel plate: the bottom rotating steel plate comprises two wing plates which can rotate along the middle axis, and the two wing plates are respectively and fixedly connected with the embedded steel plate on the back of the ladder section and the embedded steel plate on the side of the beam;

(5) filling gaps: filling a gap between the side surface of the prefabricated stair end and the vertical surface of the L-shaped notch with filler to form a vertical damping shock insulation layer;

(6) connecting the top rotating steel plate: the top rotating steel plate comprises two wing plates capable of rotating along the middle axis, and the two wing plates are fixedly connected with the tread embedded steel plate and the beam top embedded steel plate respectively.

2. The energy-consuming rotary connection method for the connection of the stair joints as claimed in claim 1, wherein the distance between the adjacent tread embedded steel plates or the adjacent bench back embedded steel plates is less than or equal to 100 mm.

3. The energy-consuming rotary connection method for the connection of the stair joints as claimed in claim 1, wherein a plurality of stair end bottom horizontal surface convex blocks are arranged on the bottom horizontal surface of the prefabricated stair ends contacting with the horizontal damping shock insulation layer, a plurality of platform beam horizontal surface concave blocks are arranged on the horizontal surface of the L-shaped notches of the prefabricated platform beams, and the stair end bottom horizontal surface convex blocks and the platform beam horizontal surface concave blocks are in one-to-one correspondence with each other; the upper surface and the lower surface of the horizontal damping shock insulation layer are respectively matched with the horizontal plane convex block at the bottom of the stair and the horizontal plane concave block of the platform beam.

4. The energy-consuming rotary connection method for the connection of the stair joints as claimed in claim 1 or 3, wherein the horizontal damping and shock-isolating layer is an SBS modified asphalt damping and shock-isolating layer with a thickness of 30 mm.

5. The energy-consuming rotary connecting method for the stair joint connection according to claim 1, wherein two stair end vertical surface grooves are formed in the vertical surface, in contact with the vertical damping shock insulation layer, of the prefabricated stair end along the width direction of the prefabricated stair end, and two platform beam vertical surface grooves are formed in the vertical surface of the L-shaped notch of the prefabricated platform beam along the width direction of the platform beam; the left surface and the right surface of the vertical damping shock insulation layer are respectively matched with the vertical surface groove of the platform beam and the vertical surface groove of the stair end.

6. The energy-consuming rotary connection method for the connection of the stair joints as claimed in claim 1 or 5, wherein the vertical damping vibration-isolating layers are filled with flexible fillers such as asphalt and hemp, and the thickness of the vertical damping vibration-isolating layers is 30 mm.

7. The energy-consumption rotary type connection method for the connection of the stair joints as claimed in claim 1, wherein the tread surface embedded steel plate, the bench back surface embedded steel plate, the beam top embedded steel plate and the beam side embedded steel plate are respectively provided with a plurality of bolt holes, two wing plates of the top rotating steel plate are respectively provided with bolt holes corresponding to the bolt holes on the tread surface embedded steel plate and the beam top embedded steel plate, and the two wing plates of the top rotating steel plate are respectively fixedly connected with the tread surface embedded steel plate and the beam top embedded steel plate through top steel plate bolts; the bottom rotating steel plate is characterized in that bolt holes corresponding to the bolt holes in the embedded steel plate on the back side of the ladder section and the embedded steel plate on the side of the beam are formed in the two wing plates of the bottom rotating steel plate, and the two wing plates of the bottom rotating steel plate are fixedly connected with the embedded steel plate on the back side of the ladder section and the embedded steel plate on the side of the beam through bottom steel plate bolts.

8. The energy-consuming rotary connection method for the connection of the stair joints as claimed in claim 7, wherein the tread embedded steel plate, the bench back embedded steel plate, the beam top embedded steel plate and the beam side embedded steel plate are all L-shaped inequilateral angle steels, and the shorter side of the L-shaped inequilateral angle steels is positioned at the inner side of the installation position of the L-shaped inequilateral angle steels; the top surface of the embedded steel plate of tread, the embedded steel plate of bench back, the embedded steel plate of roof beam top and the embedded steel plate of roof beam side all is less than its mounting plane's surface, the surface that the steel plate was rotated to the top and the bottom rotates the steel plate flushes with mounting plane.

9. The energy-consuming rotary connection method for the connection of the stair joints as claimed in claim 8, wherein the specific steps of the step (4) are as follows:

(4-1) aligning bolt holes: placing one wing plate of the bottom rotating steel plate on the beam side embedded steel plate, and placing the other wing plate on the ladder section back embedded steel plate, so that bolt holes in the two wing plates of the bottom rotating steel plate are respectively aligned with bolt holes in the beam side embedded steel plate and the ladder section back embedded steel plate;

(4-2) tightening the bolts of the bottom steel plate: and (4) screwing the bottom steel plate bolts into the bolt holes in the step (4-1) respectively and screwing the bottom steel plate bolts tightly, so that the top surfaces of the bottom steel plate bolts are flush with the top surface of the bottom rotating steel plate.

10. The energy-consuming rotary connection method for a stair node connection according to claim 8, wherein the step (6) comprises the following steps:

(6-1) aligning bolt holes: placing one wing plate of the top rotating steel plate on the beam top embedded steel plate, and placing the other wing plate on the tread surface embedded steel plate, so that bolt holes in the two wing plates of the top rotating steel plate are respectively aligned with bolt holes in the beam top embedded steel plate and the tread surface embedded steel plate;

(6-2) tightening the top steel plate bolt: and (4) screwing the top steel plate bolts into the bolt holes in the step (6-1) respectively and screwing the top steel plate bolts so that the top surfaces of the top steel plate bolts are flush with the top surfaces of the bottom rotating steel plates.

Technical Field

The invention relates to the technical field of construction of prefabricated stairways, in particular to an energy-consumption rotary connection method for connection of stairway joints.

Background

With the development of society, the fabricated concrete structure is widely applied at home and abroad due to the advantages of convenient construction, short construction period, less environmental pollution and the like. In prefabricated building construction, the safety and usability of the joint connection of the stairs as a vertical transportation channel are particularly important. Currently, cast-in-place connection is mostly used for connecting nodes of stairs in residential buildings, industrial buildings and public buildings. The construction process comprises the steps of formwork erecting, steel bar binding and concrete pouring on the construction site. Cast-in-place connection has a large amount of reinforcement and pours the operation, has reduced the efficiency of construction, influences construction progress and all ring edge borders.

In response to these problems, researchers have proposed improved methods, such as "stair connection node device (application number: CN 201010123164.5)", for connecting the reserved steel bars to the cast-in-place concrete layer through anchoring connection. Although the method has short construction period and low cost, a large number of supports are required, and the pouring of the vertical members is influenced. As for the connection node (application number: CN201520789621.2) of the assembled building laying stair, the end of the stair is connected and fixed with the floor platform by bolts, and gaps are sealed by injecting glue and pouring mortar. The method has small construction space and easy operation, avoids large-area wet operation, but the bolt connection belongs to rigid connection, and the earthquake resistance of the stairs is poor. As another example, a connection node device (application number: CN201820296567.1) for a precast concrete stair of a multi-story and high-rise steel house is mainly characterized in that a connection steel groove is placed in a fixed end mounting hole, and the steel groove and a platform steel beam are connected through welding. The method is simple to manufacture and convenient and fast to install, but the welded connection also belongs to rigid connection, and the problem of poor anti-seismic performance of the stairs still exists. As another example, the main idea of the novel energy-consuming and shock-absorbing stair connection node device (application number: CN201820205669.8) is to connect a platform beam with a bracket for a stair, connect and fix the stair through vertical joint bars, and arrange an SBS modified asphalt damping shock-isolation layer between the bracket and the bottom of the stair end, so as to achieve the shock-resistant effect of the stair. Although the method improves the earthquake resistance of the stairs and reduces energy consumption, the method has higher requirement on the shear strength of the vertical steel bars.

In conclusion, although a large amount of steel bar binding and concrete pouring operations are reduced in the four assembled stair node connections, the four assembled stair node connections have the following problems that the energy consumption and the shock absorption are poor; the construction is not simple enough; more exposed components and unattractive appearance.

Disclosure of Invention

The invention aims to provide an energy-consumption rotary type connecting method for connecting stair joints, which aims to solve the problems of poor anti-seismic performance, complex construction, unattractive appearance and the like of the existing stair joint connection.

In order to achieve the above purpose, the invention provides the following technical scheme: an energy-consumption rotary type connecting method for connecting stair joints comprises a prefabricated stair end and a prefabricated platform beam, wherein the prefabricated platform beam is provided with an L-shaped notch, and the shape of the bottom of the prefabricated stair end is matched with the L-shaped notch; the connecting method comprises the following steps:

(1) the prefabricated part:

(1-1) pre-buried prefabricated staircase components: arranging a plurality of tread embedded steel plates at the edges of the treads of the prefabricated stair ends along the width direction; arranging a plurality of ladder section back embedded steel plates at the bottom edge of the prefabricated ladder end along the width direction;

(1-2) pre-embedding a prefabricated platform beam component: arranging a plurality of beam top embedded steel plates on the edge of the top surface of the precast platform beam close to the L-shaped gap along the width direction, wherein the beam top embedded steel plates correspond to the tread surface embedded steel plates one to one; arranging a plurality of beam side embedded steel plates on the edge of the side surface of the precast platform beam close to the L-shaped gap along the width direction, wherein the beam side embedded steel plates correspond to the embedded steel plates on the back surface of the ladder section one by one;

(2) laying a horizontal damping shock insulation layer: laying a horizontal damping shock insulation layer on the horizontal plane of the L-shaped notch of the prefabricated platform beam;

(3) placing a prefabricated stair end: hoisting the prefabricated stair end and placing the prefabricated stair end at the L-shaped notch of the prefabricated platform beam, and keeping a gap between the side surface of the prefabricated stair end and the vertical surface of the L-shaped notch;

(4) connecting a bottom rotating steel plate: the bottom rotating steel plate comprises two wing plates which can rotate along the middle axis, and the two wing plates are respectively and fixedly connected with the embedded steel plate on the back of the ladder section and the embedded steel plate on the side of the beam;

(5) filling gaps: filling a gap between the side surface of the prefabricated stair end and the vertical surface of the L-shaped notch with filler to form a vertical damping shock insulation layer;

(6) connecting the top rotating steel plate: the top rotating steel plate comprises two wing plates capable of rotating along the middle axis, and the two wing plates are fixedly connected with the tread embedded steel plate and the beam top embedded steel plate respectively.

According to the invention, the horizontal damping shock insulation layer and the vertical damping shock insulation layer are arranged between the prefabricated stair end and the prefabricated platform beam, and the prefabricated platform beam and the prefabricated stair end are connected through the rotating steel plate, so that the prefabricated stair end and the prefabricated platform beam are fixed, and thus, a certain rotation can be provided, and vertical restraint and horizontal restraint can be provided. When the stair receives vibrations, the damping antidetonation layer provides certain deformation, rotates the steel sheet and can provide certain rotation volume, and the steel sheet is rotated in the cooperation of damping antidetonation layer, has effectively improved the anti-seismic performance of stair.

Further, the distance between the embedded steel plates on the adjacent tread surfaces or the embedded steel plates on the back of the ladder sections is smaller than or equal to 100 mm.

Furthermore, a plurality of stair end bottom horizontal surface convex blocks are arranged on the horizontal surface of the bottom of the prefabricated stair end, which is in contact with the horizontal damping shock insulation layer, a plurality of platform beam horizontal surface concave blocks are arranged on the horizontal surface of the L-shaped notch of the prefabricated platform beam, and the stair end bottom horizontal surface convex blocks and the platform beam horizontal surface concave blocks are in one-to-one correspondence with each other; the upper surface and the lower surface of the horizontal damping shock insulation layer are respectively matched with the horizontal plane convex block at the bottom of the stair and the horizontal plane concave block of the platform beam. The arrangement of the horizontal plane convex block at the bottom of the stair end and the horizontal plane concave block of the platform beam can prevent the horizontal damping shock insulation layer from displacing in the horizontal direction.

Preferably, because the horizontal direction is the main stress surface when the stair is used, the horizontal damping shock insulation layer is the SBS modified asphalt damping shock insulation layer with better shock resistance, and the thickness of the horizontal damping shock insulation layer is 30 mm.

Furthermore, two vertical surface grooves of the stair ends are arranged on the vertical surface, in contact with the vertical shock insulation damping layer, of the prefabricated stair ends along the width direction of the prefabricated stair ends, and two vertical surface grooves of the platform beam are arranged on the vertical surface of the L-shaped notch of the prefabricated platform beam along the width direction of the platform beam; the left surface and the right surface of the vertical damping shock insulation layer are respectively matched with the vertical surface groove of the platform beam and the vertical surface groove of the stair end. The vertical surface grooves of the stair ends and the vertical surface grooves of the platform beam can prevent the vertical damping shock insulation layer from vertically displacing.

Preferably, the vertical damping shock insulation layer is formed by filling flexible fillers such as asphalt and hemp threads, and the thickness of the vertical damping shock insulation layer is 30 mm.

Furthermore, a plurality of bolt holes are formed in the tread surface embedded steel plate, the ladder section back surface embedded steel plate, the beam top embedded steel plate and the beam side embedded steel plate, bolt holes corresponding to the bolt holes in the tread surface embedded steel plate and the beam top embedded steel plate are formed in two wing plates of the top rotating steel plate respectively, and the two wing plates of the top rotating steel plate are fixedly connected with the tread surface embedded steel plate and the beam top embedded steel plate through top steel plate bolts respectively; the bottom rotating steel plate is characterized in that bolt holes corresponding to the bolt holes in the embedded steel plate on the back side of the ladder section and the embedded steel plate on the side of the beam are formed in the two wing plates of the bottom rotating steel plate, and the two wing plates of the bottom rotating steel plate are fixedly connected with the embedded steel plate on the back side of the ladder section and the embedded steel plate on the side of the beam through bottom steel plate bolts.

Furthermore, the tread embedded steel plate, the bench back embedded steel plate, the beam top embedded steel plate and the beam side embedded steel plate are all L-shaped inequilateral angle steels, and one shorter side of each angle steel is positioned on the inner side of the installation position of the angle steel; the top surface of the embedded steel plate of tread, the embedded steel plate of bench back, the embedded steel plate of roof beam top and the embedded steel plate of roof beam side all is less than its mounting plane's surface, the surface that the steel plate was rotated to the top and the bottom rotates the steel plate flushes with mounting plane.

Preferably, the specific steps of step (4) are as follows:

(4-1) aligning bolt holes: placing one wing plate of the bottom rotating steel plate on the beam side embedded steel plate, and placing the other wing plate on the ladder section back embedded steel plate, so that bolt holes in the two wing plates of the bottom rotating steel plate are respectively aligned with bolt holes in the beam side embedded steel plate and the ladder section back embedded steel plate;

(4-2) tightening the bolts of the bottom steel plate: and (4) screwing the bottom steel plate bolts into the bolt holes in the step (4-1) respectively and screwing the bottom steel plate bolts tightly, so that the top surfaces of the bottom steel plate bolts are flush with the top surface of the bottom rotating steel plate.

Preferably, the specific steps of step (6) are as follows:

(6-1) aligning bolt holes: placing one wing plate of the top rotating steel plate on the beam top embedded steel plate, and placing the other wing plate on the tread surface embedded steel plate, so that bolt holes in the two wing plates of the top rotating steel plate are respectively aligned with bolt holes in the beam top embedded steel plate and the tread surface embedded steel plate;

(6-2) tightening the top steel plate bolt: and (4) screwing the top steel plate bolts into the bolt holes in the step (6-1) respectively and screwing the top steel plate bolts so that the top surfaces of the top steel plate bolts are flush with the top surfaces of the bottom rotating steel plates.

Compared with the prior art, the invention has the advantages that:

1. the prefabricated staircase has the advantages that the rotating steel plate with the rotating shaft is mainly used for connecting the prefabricated platform beam with the node of the prefabricated staircase, so that the prefabricated staircase can provide restraint on two sides of the node and can slide in a small range, and the prefabricated staircase has the functions of energy dissipation and shock absorption.

2. The invention is provided with a vertical surface groove of a stair end, a horizontal plane convex block at the bottom of the stair end, a vertical surface groove of a platform beam and a horizontal plane concave block of the platform beam at the joint of a prefabricated platform beam and a prefabricated stair. Therefore, the friction between the prefabricated staircase and the damping shock insulation layer is increased, and the constraint force of the rotating steel plate is reduced.

3. The damping anti-seismic layer is matched with the rotating steel plate, so that the anti-seismic performance of the stair is better improved.

4. According to the invention, the rotating steel plate is connected with the embedded steel plate through the bolts, so that the construction is more convenient and rapid, and the construction efficiency is improved.

5. The top surface of the tread surface embedded steel plate is lower than the tread surface, the top surface of the ladder section back surface embedded steel plate is lower than the ladder section back surface, the top surface of the beam top embedded steel plate is lower than the top surface of the platform beam, and the top surface of the beam side embedded steel plate is concave on the outer side surface of the platform beam. When making pre-buried steel sheet and rotating the steel sheet be connected with this, the top surface of rotating the steel sheet flushes with platform beam top surface, stair end tread simultaneously. Meanwhile, when the top steel plate bolt is screwed down, the top surface of the top steel plate bolt is flush with the top surface of the top rotating steel plate; when the bottom steel plate bolt is screwed down, the top surface of the bottom steel plate bolt is flush with the top surface of the bottom rotating steel plate, so that the appearance is flat and attractive, and subsequent decoration is easy.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure of the prefabricated staircase ends according to the invention.

Fig. 3 is a schematic structural view of a precast deck beam according to the present invention.

Fig. 4 is a plane structure distribution diagram of the horizontal projection at the bottom of the staircase in the invention.

FIG. 5 is a plan view of the flat structure of the platform beam horizontal surface depression of the present invention.

FIG. 6 is a schematic view showing the structure of the tread surface embedded steel plate according to the present invention.

Fig. 7 is a schematic structural view of a steel plate embedded in the back of a bench in the invention.

Fig. 8 is a schematic structural view of the beam top embedded steel plate in the invention.

Fig. 9 is a schematic structural view of the girder side embedded steel plate according to the present invention.

FIG. 10 is a schematic sectional view of a top rotating steel plate according to the present invention.

Fig. 11 is a schematic top view of the top rotating steel plate of the present invention.

Fig. 12 is a front view schematically illustrating the structure of the bottom rotating steel plate in the present invention.

FIG. 13 is a schematic view of the structure of the damping vibration-isolating layer according to the present invention.

In the figure: 1, prefabricating a stair end, 11 tread embedded steel plates, 12 stair end vertical surface grooves, 13 stair end bottom horizontal surface lugs, 14 stair section back embedded steel plates, 15 tread embedded steel plate bolt holes and 16 stair section back embedded steel plate bolt holes; 2, prefabricating a platform beam, 21 beam top embedded steel plates, 22 platform beam vertical surface grooves, 23 platform beam horizontal surface concave blocks, 24 beam side embedded steel plates, 25 beam top embedded steel plate bolt holes and 26 beam side embedded steel plate bolt holes; 3, rotating a steel plate at the top, connecting a platform beam wing plate 31, connecting a stair end wing plate 32, connecting a top steel plate rotating shaft 33, connecting a steel sleeve on the top steel plate 34, a steel sleeve in the top steel plate 35, a steel sleeve in the top steel plate 36, a steel sleeve in the bottom steel plate 37, connecting a platform beam wing plate bolt hole 38, connecting a stair end wing plate bolt hole 39 and a top steel plate bolt; 4, rotating a steel plate at the bottom, fixing a platform beam wing plate 41, fixing a stair end wing plate 42, fixing a stair end wing plate 43, rotating a steel plate shaft 43, fixing a platform beam wing plate bolt hole 47, fixing a stair end wing plate bolt hole 48 and fixing a bottom steel plate bolt, wherein the steel plate at the bottom is provided with an upper steel sleeve 44, a middle steel sleeve 45 and a lower steel sleeve 46; 5 damping shock insulation layers, 51 horizontal damping shock insulation layers and 52 vertical damping shock insulation layers.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further specifically described below by way of embodiments in combination with the accompanying drawings.

The invention relates to an energy-consumption rotary type connecting method for connecting stair joints, which comprises a prefabricated stair end 1, a prefabricated platform beam 2, a top rotating steel plate 3, a bottom rotating steel plate 4 and a damping shock insulation layer 5, wherein the prefabricated platform beam is a prefabricated platform beam; an L-shaped gap is formed in one side of the prefabricated platform beam 2, and the shape of the bottom of the prefabricated stair end 1 is matched with the L-shaped gap and is erected on the L-shaped gap of the prefabricated platform beam 2; be equipped with damping shock insulation layer 5 between the contact surface of prefabricated stair end 1 and prefabricated platform roof beam 2, damping shock insulation layer 5 includes horizontal damping shock insulation layer 51 and vertical damping shock insulation layer 52, and horizontal damping shock insulation layer 51 sets up on the horizontal plane of L shape breach, and vertical damping shock insulation layer 52 sets up on the vertical face of L shape breach.

Be equipped with stair end bottom horizontal plane lug 13 on the bottom horizontal plane of prefabricated stair end 1 and the contact of horizontal shock insulation damping layer 51, be equipped with stair end vertical plane recess 12 along the width direction of prefabricated stair end 1 on the vertical plane of prefabricated stair end 1 and the contact of vertical shock insulation damping layer 52, the edge that the tread of prefabricated stair end 1 is close to prefabricated platform roof beam 2 inlays and is equipped with the embedded steel sheet of tread 11, the edge that the bottom of prefabricated stair end 1 is close to prefabricated platform roof beam 2 inlays and is equipped with the embedded steel sheet of bench back 14.

The horizontal plane lug 13 of stair end bottom is the cuboid of evagination, and its quantity is fifteen, is latticed interval evenly distributed to be on a parallel with prefabricated stair end 1 width direction and be the row, set up to six altogether, wherein first row two, the second is listed as three, the third is listed as two, the fourth is listed as three, the fifth is listed as two, the sixth is listed as three.

The vertical face grooves 12 of the stair ends are cuboid grooves which are as long as the width of the prefabricated stair ends 1, and the number of the grooves is two.

The embedded steel plate 11 of the tread is L-shaped inequilateral angle steel with a short side of 40mm, a long side of 100mm and a thickness of 20mm, and the top surface of the embedded steel plate is lower than the tread. Six tread surface embedded steel plate bolt holes 15 are arranged on the tread surface embedded steel plate 11 in a penetrating mode, the tread surface embedded steel plate bolt holes 15 are circular holes with the diameter of 5mm, and internal threads are arranged on the inner surface of the tread surface embedded steel plate bolt holes.

The embedded steel plate 14 on the back of the bench is L-shaped inequilateral angle steel with a short side of 40mm, a long side of 100mm and a thickness of 20mm, and the top surface of the angle steel is lower than the back of the bench. Run through on the embedded steel sheet 14 in bench back and be equipped with six pre-buried steel sheet bolt holes in bench back 16, pre-buried steel sheet bolt hole in bench back 16 is diameter 5 mm's circular hole, and its inner surface is equipped with the internal thread.

Be equipped with platform roof beam horizontal plane concave 23 on the horizontal plane of 2L shape breachs of prefabricated platform roof beam, be equipped with platform roof beam vertical face recess 22 along the width direction of platform roof beam on the vertical face of 2L shape breaches of prefabricated platform roof beam, the edge that 2 top surfaces of prefabricated platform roof beam are close to prefabricated stair end inlays and is equipped with roof beam pre-buried steel sheet 21, the edge that 2 sides of prefabricated platform roof beam are close to prefabricated stair end inlays and is equipped with roof beam side pre-buried steel sheet 24.

The platform beam horizontal plane concave blocks 23 correspond to the stair end bottom horizontal plane convex blocks 13 one by one, the number of the platform beam horizontal plane concave blocks is fifteen, the platform beam horizontal plane concave blocks are uniformly distributed in a grid shape at intervals, the platform beam horizontal plane concave blocks are arranged in rows parallel to the width direction of the prefabricated platform beam 2, and the rows are totally arranged into six rows, wherein the first row is two, the second row is three, the third row is two, the fourth row is three, the fifth row is two, and the sixth row is three.

The platform beam vertical surface grooves 22 are cuboid grooves which are as long as the width of the prefabricated platform beam 2, and the positions of the two grooves correspond to the stair end vertical surface grooves 12.

The beam top embedded steel plate 21 is an L-shaped inequilateral angle steel with a short side of 40mm, a long side of 100mm and a thickness of 20mm, and the top surface of the L-shaped inequilateral angle steel is lower than that of the platform beam. Six beam top embedded steel plate bolt holes 25 are arranged on the beam top embedded steel plate 21 in a penetrating mode, the beam top embedded steel plate bolt holes 25 are circular holes with the diameter of 5mm, and internal threads are arranged on the inner surface of the beam top embedded steel plate.

The beam side embedded steel plate 24 is an L-shaped inequilateral angle steel with a short side of 40mm, a long side of 100mm and a thickness of 20mm, and the side surface of the L-shaped inequilateral angle steel is lower than the outer side surface of the platform beam. Six beam side embedded steel plate bolt holes 26 are formed in the beam side embedded steel plate 24 in a penetrating mode, the beam side embedded steel plate bolt holes 26 are circular holes with the diameter of 5mm, and internal threads are formed in the inner surface of the beam side embedded steel plate bolt holes.

The tread embedded steel plate 11 and the beam top embedded steel plate 21 are connected through the top rotating steel plate 3.

The top rotating steel plate 3 is composed of a connecting platform beam wing plate 31, a connecting stair end wing plate 32, a top steel plate rotating shaft 33, a top steel plate upper-linking steel sleeve 34, a top steel plate middle-linking steel sleeve 35, a top steel plate lower-linking steel sleeve 36, a connecting platform beam wing plate bolt hole 37, a connecting stair end wing plate bolt hole 38 and a top steel plate bolt 39. The connecting platform beam flanges 31 and connecting stair end flanges 32 are rotatable about a top steel plate pivot 33.

The connecting platform beam wing plate 31 and the connecting stair end wing plate 32 are cuboids with the length of 80mm, the width of 50mm and the thickness of 20 mm.

The top steel plate rotating shaft 33 is a cylindrical rotating shaft with the diameter of 30mm and the length of 50 mm.

The steel sleeve 34 of the top steel plate is a hollow cylinder, is sleeved on one third of the upper part of the top steel plate rotating shaft 33 and is fixedly connected with the connecting platform beam wing plate 31, so that the connecting platform beam wing plate 31 can rotate around the top steel plate rotating shaft 33.

The steel linking sleeve 35 in the top steel plate is a hollow cylinder, is sleeved at one third of the middle part of the top steel plate rotating shaft 33 and is fixedly connected with the connecting stair end wing plate 32, so that the connecting stair end wing plate 32 can rotate around the top steel plate rotating shaft 33.

The top steel plate lower connecting steel sleeve 36 is a hollow cylinder, is sleeved at one third of the lower part of the top steel plate rotating shaft 33 and is fixedly connected to the connecting platform beam wing plate 31, so that the connecting platform beam wing plate 31 can rotate around the top steel plate rotating shaft 33.

The connecting platform beam wing plate bolt holes 37 are circular holes with the diameter of 5mm, and 6 holes in total penetrate through the plate thickness of the connecting platform beam wing plate 31 and are provided with internal threads. The bolt holes of the steel plate correspond to the bolt holes 25 of the embedded steel plate on the beam top.

The bolt holes 38 for connecting the stair end wing plates are circular holes with the diameter of 5mm, and 6 holes are formed in the thickness of the plate for penetrating and connecting the stair end wing plates 32 and are provided with internal threads. The bolt holes of the pedal are respectively corresponding to the bolt holes 15 of the embedded steel plate of the tread.

The top steel plate bolt 39 is a cylinder with a diameter of 5mm and a height of 40mm, and is provided with an external thread. The external threads are matched with the internal threads in the tread embedded steel plate bolt hole 15, the beam top embedded steel plate bolt hole 25, the connecting platform beam wing plate bolt hole 37 and the connecting stair end wing plate bolt hole 38. When the top steel plate bolts 39 are tightened in the bolt holes, the top surfaces of the top steel plate bolts 39 are flush with the top surface of the top rotating steel plate 3.

The embedded steel plate 14 on the back of the bench and the embedded steel plate 24 on the side of the beam are connected through the bottom rotating steel plate 4.

The bottom rotating steel plate 4 is composed of a fixed platform beam wing plate 41, a fixed stair end wing plate 42, a bottom steel plate rotating shaft 43, a bottom steel plate upper-linking steel sleeve 44, a bottom steel plate middle-linking steel sleeve 45, a bottom steel plate lower-linking steel sleeve 46, a fixed platform beam wing plate bolt hole 47, a fixed stair end wing plate bolt hole 48 and a bottom steel plate bolt 49. The fixed platform beam flanges 41 and fixed stair end flanges 42 are rotatable about a bottom steel pivot 43.

The fixed platform beam wing plate 41 and the fixed stair end wing plate 42 are both cuboids with the length of 80mm, the width of 50mm and the thickness of 20 mm.

The rotating shaft 43 of the bottom steel plate is a cylindrical rotating shaft with the diameter of 30mm and the length of 50 mm.

The steel sleeve 44 of the bottom steel plate is a hollow cylinder, is sleeved on one third of the upper part of the rotating shaft 43 of the bottom steel plate and is fixedly connected with the wing plate 41 of the fixed platform beam, so that the wing plate 41 of the fixed platform beam can rotate around the rotating shaft 43 of the bottom steel plate.

The steel sleeve 45 in the bottom steel plate is a hollow cylinder, is sleeved at one third of the middle part of the rotating shaft 43 of the bottom steel plate and is fixedly connected with the wing plate 42 at the end of the fixed stair, so that the wing plate 42 at the end of the fixed stair can rotate around the rotating shaft 43 of the bottom steel plate.

The bottom steel plate lower armature steel sleeve 46 is a hollow cylinder, is sleeved at one third of the lower part of the bottom steel plate rotating shaft 43 and is fixedly connected to the fixed platform beam wing plate 41, so that the fixed platform beam wing plate 41 can rotate around the bottom steel plate rotating shaft 43.

The fixed platform beam wing plate bolt holes 47 are circular holes with the diameter of 5mm, 6 holes penetrate through the plate thickness of the fixed platform beam wing plate 41, and internal threads are arranged. The bolt holes of which correspond to the beam-side embedded steel plate bolt holes 26, respectively.

The bolt holes 48 for fixing the stair end wing plates are circular holes with the diameter of 5mm, and 6 holes in total penetrate through the plate thickness of the fixed stair end wing plates 42 and are provided with internal threads. The bolt holes of the steel plate correspond to the embedded steel plate bolt holes 16 on the back of the bench.

The bottom steel plate bolt 49 is a cylinder with a diameter of 5mm and a height of 40mm and is provided with an external thread. The external threads are matched with the internal threads in the bench back embedded steel plate bolt holes 16, the beam side embedded steel plate bolt holes 26, the fixed platform beam wing plate bolt holes 47 and the fixed stair end wing plate bolt holes 48. When the bottom plate bolts 49 are tightened in the bolt holes, the top surfaces of the bottom plate bolts 49 are flush with the top surface of the bottom rotating plate 4.

The horizontal damping shock insulation layer 51 is an SBS modified asphalt damping shock insulation layer, the thickness of the horizontal damping shock insulation layer is 30mm, the size of the horizontal damping shock insulation layer is matched with the horizontal plane of the L-shaped gap of the prefabricated platform beam 2, and the upper surface and the lower surface of the horizontal damping shock insulation layer 51 are respectively matched with the horizontal plane convex block 13 at the bottom of the stair end and the horizontal plane concave block 23 of the platform beam.

The vertical damping shock insulation layer 52 is formed by filling flexible fillers such as asphalt and hemp and the like, the thickness of the vertical damping shock insulation layer is 30mm, the size of the vertical damping shock insulation layer is matched with the vertical surface of the L-shaped notch of the prefabricated platform beam 2, and the left surface and the right surface of the vertical damping shock insulation layer 52 are respectively matched with the platform beam vertical surface groove 22 and the stair end vertical surface groove 12.

The invention relates to an energy-consumption rotary connecting method for connecting stair joints, which comprises the following steps:

(1) prefabricated component

(1-1) pre-buried prefabricated staircase components: arranging a tread embedded steel plate 11 at intervals of 100mm along the width direction at the edge of the tread of the prefabricated stair end 1, and arranging the tread embedded steel plates less than 100mm according to 100 mm; arranging a steel plate 14 embedded on the back of a stair section at intervals of 100mm along the width direction at the bottom edge of the prefabricated stair end 1, wherein the steel plate 14 embedded on the back of the stair section is arranged at intervals of 100mm when the thickness of the steel plate is less than 100 mm; two vertical surface grooves 12 of the stair ends are arranged on the vertical surface of the prefabricated stair end 1, and horizontal surface convex blocks 13 of the stair end bottom are uniformly arranged on the horizontal surface of the bottom of the prefabricated stair end 1.

(1-2) pre-embedding a prefabricated platform beam component: arranging beam top embedded steel plates 21 at the edge, close to the L-shaped gap, of the top surface of the prefabricated platform beam 2 along the width direction at intervals of 100mm, wherein the beam top embedded steel plates 21 correspond to the tread surface embedded steel plates 11 one by one; arranging beam side embedded steel plates 24 at the edge of the side surface of the precast platform beam 2 close to the L-shaped gap along the width direction at intervals of 100mm, wherein the beam side embedded steel plates 24 correspond to the embedded steel plates 14 on the back surface of the ladder section one by one; two platform beam vertical surface grooves 22 are arranged on the vertical surface of the L-shaped gap of the prefabricated platform beam 2, and platform beam horizontal surface concave blocks 23 are uniformly arranged on the horizontal surface of the L-shaped gap of the prefabricated platform beam 2.

(2) Laying horizontal damping shock insulation layer

And horizontally paving an SBS modified asphalt damping and shock-isolating layer with the thickness of 30mm on the horizontal plane of the L-shaped gap of the prefabricated platform beam 2, wherein the width of the SBS modified asphalt damping and shock-isolating layer is consistent with that of the prefabricated platform beam 2, and forming a horizontal damping and shock-isolating layer 51.

(3) Placing prefabricated stair ends

(3-1) preliminary setting: and (3) hoisting the prefabricated stair end 1, and placing the prefabricated stair end 1 on the prefabricated platform beam 2 when the distance between the vertical surface groove 12 of the stair end and the vertical surface groove 22 of the platform beam is controlled to be about 100mm, so that the horizontal surface bump 13 at the bottom of the stair end is in contact with the horizontal damping shock insulation layer 51.

(3-2) adjusting the distance: when the horizontal plane convex block 13 at the bottom of the stair end contacts the horizontal damping shock insulation layer 51, the prefabricated stair end 1 is continuously pushed inwards, so that the distance between the vertical plane groove 12 of the stair end and the vertical plane groove 22 of the platform beam is controlled to be about 30 mm.

(4) Connecting bottom rotating steel plate

(4-1) aligning bolt holes: the fixed platform beam wing plate 41 of the bottom rotating steel plate 4 is placed on the beam side embedded steel plate 24, and the fixed stair end wing plate 42 is placed on the stair section back embedded steel plate 14, so that the fixed platform beam wing plate bolt holes 47 are aligned with the beam side embedded steel plate bolt holes 26, and the fixed stair end wing plate bolt holes 48 are aligned with the stair section back embedded steel plate bolt holes 16.

(4-2) tightening the bolts of the bottom steel plate: bottom steel plate bolts 49 are turned into the fixed platform beam wing plate bolt holes 47 and the fixed stair end wing plate bolt holes 48 so that the top surfaces of the bottom steel plate bolts 49 are flush with the top surface of the bottom rotating steel plate 4.

(5) Filling the voids

(5-1) formation of vertical damping seismic isolation layer 52: and filling the vertical gaps with flexible fillers such as asphalt and hemp threads to form the vertical damping shock insulation layer 52.

(5-2) filling other gaps: and filling gaps around the horizontal damping shock insulation layer 51 and the horizontal plane bumps 13 at the bottom of the stair end by using flexible fillers such as asphalt and hemp threads.

(6) Connecting top rotating steel plate

(6-1) aligning bolt holes: the connecting platform beam wing plate 31 of the top rotating steel plate 3 is placed on the beam top embedded steel plate 21, and the connecting stair end wing plate 32 is placed on the step surface embedded steel plate 11, so that the connecting stair end wing plate bolt hole 38 is aligned to the step surface embedded steel plate bolt hole 15, and the connecting platform beam wing plate bolt hole 37 is aligned to the beam top embedded steel plate bolt hole 25.

And (6-2) tightening the top steel plate bolt. The top steel plate bolts 39 are turned into the connecting platform beam wing plate bolt holes 37 and the connecting stair end wing plate bolt holes 38, so that the top surfaces of the top steel plate bolts 39 are flush with the top surface of the top rotating steel plate 3.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.