阅读说明：本技术 一种适用于装配式现浇连廊施工的外挂式防护式脚手架 (Outer hanging protective scaffold suitable for cast-in-place vestibule construction of assembled ) 是由 丁道斌 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种适用于装配式现浇连廊施工的外挂式防护式脚手架,包括脚手架主体,其特征在于：还包括U型管卡、工字钢和定位卡紧装置,所述的U型管卡预埋在混凝土现浇连廊上方,U型管卡与连廊主梁钢筋焊接成一体且形成交合焊接；所述的工字钢垂直的安装在固化强度大于75％的现浇连廊混凝土上,并且使用U型管卡采用双螺母压板式锁紧工字钢；所述的定位卡紧装置夹紧在工字钢上,在本发明中,通过提前预埋现浇连廊U型管卡的方法,通过工字钢悬挑的方法,安装外挂式脚手架,采用层层提升翻转的方法,为装配式高层建筑空中连廊现浇钢筋砼结构施工提供了一种安全、可靠、便捷的脚手架。(The invention discloses an externally hung protective scaffold suitable for the construction of an assembled cast-in-place corridor, which comprises a scaffold main body and is characterized in that: the concrete cast-in-place corridor is characterized by also comprising a U-shaped pipe clamp, I-shaped steel and a positioning and clamping device, wherein the U-shaped pipe clamp is pre-embedded above the concrete cast-in-place corridor, and the U-shaped pipe clamp and main beam steel bars of the corridor are welded into a whole and form a joint welding; the I-shaped steel is vertically arranged on cast-in-place corridor concrete with the curing strength of more than 75 percent, and the U-shaped pipe clamp is used for locking the I-shaped steel by adopting a double-nut pressing plate type; the positioning and clamping device is clamped on the I-steel, in the invention, an externally hung scaffold is installed by a method of pre-embedding a U-shaped pipe clamp of the cast-in-place corridor in advance, a method of I-steel overhanging is adopted, and a layer-by-layer lifting and overturning method is adopted, so that a safe, reliable and convenient scaffold is provided for the construction of an air corridor cast-in-place reinforced concrete structure of an assembly type high-rise building.)

1. The utility model provides an outer hanging protective type scaffold suitable for cast-in-place vestibule of assembled is under construction, includes the scaffold main part, its characterized in that: the concrete cast-in-place corridor is characterized by also comprising a U-shaped pipe clamp, I-shaped steel and a positioning and clamping device, wherein the U-shaped pipe clamp is pre-embedded above the concrete cast-in-place corridor, and the U-shaped pipe clamp and main beam steel bars of the corridor are welded into a whole and form a joint welding; the I-shaped steel is vertically arranged on cast-in-place corridor concrete with the curing strength of more than 75 percent, and the U-shaped pipe clamp is used for locking the I-shaped steel by adopting a double-nut pressing plate type; the positioning and clamping device is clamped on the I-shaped steel and can slide along the axial direction of the I-shaped steel; the scaffold main body is detachably arranged on the positioning and clamping device; wherein:

the protective scaffold further comprises the following installation steps:

the first step is as follows: pre-burying a U-shaped pipe clamp;

secondly, mounting the I-shaped steel in a cantilever manner;

the third step: the externally-hung scaffold main body is arranged on the I-shaped steel by using a positioning clamping device;

the fourth step: and after the gallery formwork support and the steel bar binding of the upper construction layer are finished, pre-burying a U-shaped pipe clamp according to the step one, installing I-shaped steel and an externally hung scaffold body according to the step two and the step three, and constructing in a layer-by-layer overturning mode.

2. The externally hung protective scaffold suitable for the construction of the fabricated cast-in-place corridor according to claim 1, wherein: the U-shaped pipe clamp comprises a U-shaped pipe, a nut and a limiting plate, wherein threads are formed in the side faces of two end portions of the U-shaped pipe, through holes are formed in two ends of the limiting plate, the I-shaped steel is arranged in the U-shaped pipe, the nut is in threaded connection with the two end portions of the U-shaped pipe, and the limiting plate presses the I-shaped steel downwards.

3. The externally hung protective scaffold suitable for the construction of the fabricated cast-in-place corridor according to claim 1, wherein: the positioning clamping device comprises a connecting block, a first clamping plate, a second clamping plate and a fastening piece, wherein the fastening piece clamps the first clamping plate and the second clamping plate at the top and the bottom of the top plate of the I-steel, the connecting block is fixedly arranged on the top surface of the first clamping plate, when the first clamping plate and the second clamping plate are clamped, the connecting block is positioned at the central position of the wide edge of the top plate of the I-steel, the first clamping plate is a bending piece and comprises a first horizontal plate and a first inclined plate, the length of the first horizontal plate is greater than the width of the I-steel, the first inclined plate is attached to the inclined plane on one side of the bottom of the top plate of the I-steel, the second clamping plate is a bending piece and comprises a second horizontal plate and a second inclined plate, the second horizontal plate and the first horizontal plate are attached to the part of the I-steel extending out of the I-steel, the second inclined plate is attached to the inclined plane on the other side of the bottom of the top plate of the I-steel, the fastener be the bolt, the part that first horizontal plate stretches out the I-steel on run through and seted up the screw, the screw has been seted up in what the second horizontal plate corresponded, the bolt wear to establish in two screw holes, the connecting block on run through the connecting hole of front and back terminal surface.

4. The externally hung protective scaffold suitable for the construction of the fabricated cast-in-place corridor as claimed in claim 3, wherein: hanging scaffold frame main part walk the guidance tape for two layers and weld dress structure support body, the lower floor is "day" type structure, upper L type support body, 2 lugs are no less than to upper L type support body dress, outer hanging scaffold frame keeps less than or equal to 200 mm's clearance with the vestibule structure, outer hanging scaffold frame about the vestibule cross-section is installed on the I-steel and is accomplished the back, 2 end about pull one horizontal pole in the middle of the outer hanging scaffold frame, horizontal pull rod quantity is greater than 2.

5. The externally hung protective scaffold suitable for the construction of the fabricated cast-in-place corridor as claimed in claim 4, wherein: the frame structure material is square steel pipe crossbeam 50 x 2.5, pole setting 50 x 2.5 square steel pipe, protection middle horizontal pole 30 x 1.2 square steel pipe, walkway plate is pattern (DB) board 2mm thick, skirting height 250mm, protection net piece thickness 0.6mm, the lug material is not less than 10mm steel plate, the material of horizontal pull rod is 50 x 2.5 square steel pipe.

6. The externally hung protective scaffold suitable for the construction of the fabricated cast-in-place corridor according to claim 1, wherein: the distance between the pre-buried U-shaped pipe clamps is not more than 1800 mm.

7. The externally hung protective scaffold suitable for the construction of the fabricated cast-in-place corridor according to claim 1, wherein: the external hanging scaffold main body is connected with the positioning clamping device on the I-shaped steel by adopting an M16 bolt.

Technical Field

The invention relates to the field of fabricated buildings, in particular to an externally-hung protective scaffold suitable for fabricated cast-in-place corridor construction.

Background

The assembly type high-rise building air corridor is mostly seen between two higher buildings (main buildings), the structure is a cast-in-place reinforced concrete structure, a template is required to be paved for pouring concrete during construction, a scaffold is required to be erected for construction, however, when the air corridor (mainly a beam for supporting the main body of the air corridor) adopts a pure reinforced concrete structure, because the air corridor cannot bear external force before solidification, a reinforcement cage even needs to be dependent on other structures to ensure the accurate position of the reinforcement cage during construction, and a formwork support and the scaffold need to be arranged; when the ground height of the air corridor is higher, the erected formwork support and scaffold are easy to be unstable, and relevant regulations also do not allow the same. There is also a method of suspending a formwork truss between two tall buildings, which, although feasible, requires a high cost and is difficult to disassemble.

Disclosure of Invention

The invention aims to provide an externally-hung protective scaffold suitable for construction of an assembled cast-in-place corridor. The cast-in-place vestibule construction of being convenient for utilizes the integral layer upon layer of tower crane to promote, reduces the activity duration, has guaranteed the operation safety, and the outward appearance is succinct pleasing to the eye, and installation, dismantlement are convenient, and the cost is few.

In order to achieve the purpose, the invention provides the following technical scheme: an externally-hung protective scaffold suitable for assembly type cast-in-place corridor construction comprises a scaffold main body, a U-shaped pipe clamp, I-shaped steel and a positioning clamping device, wherein the U-shaped pipe clamp is pre-embedded above a concrete cast-in-place corridor, and the U-shaped pipe clamp and main beam steel bars of the corridor are welded into a whole and form a joint welding; the I-shaped steel is vertically arranged on cast-in-place corridor concrete with the curing strength of more than 75 percent, and the U-shaped pipe clamp is used for locking the I-shaped steel by adopting a double-nut pressing plate type; the positioning and clamping device is clamped on the I-shaped steel and can slide along the axial direction of the I-shaped steel; the scaffold main body is detachably arranged on the positioning and clamping device; wherein:

the protective scaffold further comprises the following installation steps:

the first step is as follows: pre-burying a U-shaped pipe clamp;

secondly, mounting the I-shaped steel in a cantilever manner;

the third step: the externally-hung scaffold main body is arranged on the I-shaped steel by using a positioning clamping device;

the fourth step: and after the gallery formwork support and the steel bar binding of the upper construction layer are finished, pre-burying a U-shaped pipe clamp according to the step one, installing I-shaped steel and an externally hung scaffold body according to the step two and the step three, and constructing in a layer-by-layer overturning mode.

Furthermore, the U-shaped pipe clamp comprises a U-shaped pipe, a nut and a limiting plate, wherein the side faces of two end parts of the U-shaped pipe are provided with threads, two ends of the limiting plate are provided with through holes, the I-shaped steel is arranged in the U-shaped pipe, the nut is in threaded connection with the two end parts of the U-shaped pipe, and the limiting plate presses down the I-shaped steel.

Furthermore, the positioning clamping device comprises a connecting block, a first clamping plate, a second clamping plate and a fastening piece, the fastening piece clamps the first clamping plate and the second clamping plate at the top and the bottom of the top plate of the I-steel, the connecting block is fixedly arranged on the top surface of the first clamping plate, when the first clamping plate and the second clamping plate are clamped, the connecting block is positioned at the central position of the wide edge of the top plate of the I-steel, the first clamping plate is a bending piece and comprises a first horizontal plate and a first inclined plate, the length of the first horizontal plate is greater than the width of the I-steel, the first inclined plate is attached to the inclined plane on one side of the bottom of the top plate of the I-steel, the second clamping plate is a bending piece and comprises a second horizontal plate and a second inclined plate, the second horizontal plate is attached to the part of the first horizontal plate extending out of the I-steel, the second inclined plate is attached to the inclined plane on the other side of the bottom of the top plate of the I-steel, the fastener be the bolt, the part that first horizontal plate stretches out the I-steel on run through and seted up the screw, the screw has been seted up in what the second horizontal plate corresponded, the bolt wear to establish in two screw holes, the connecting block on run through the connecting hole of front and back terminal surface.

Preferably, hanging scaffold frame main part walk the guidance tape for two layers and weld dress structure support body, the lower floor is "day" type structure, upper L type support body, 2 lugs are no less than to upper L type support body dress, outer hanging scaffold frame keeps the clearance less than or equal to 200mm with the vestibule structure, after outer hanging scaffold frame was installed on the I-steel and is accomplished about the vestibule cross-section, pull one horizontal pole about 2 ends in the middle of outer hanging scaffold frame, horizontal pull rod quantity is greater than 2.

Preferably, the frame structure material is square steel pipe beams of 50 × 2.5, the upright posts 50 × 2.5 square steel pipes, the protective middle cross bars 30 × 1.2 square steel pipes, the walkway plates are pattern (DB) plates with the thickness of 2mm, the skirting line height is 250mm, the protective mesh thickness is 0.6mm, the lifting lugs are steel plates with the thickness not less than 10mm, and the horizontal pull rods are square steel pipes of 50 × 2.5.

Preferably, the distance between the embedded U-shaped pipe clamps is not more than 1800 mm.

Preferably, the externally-hung scaffold main body is connected with the positioning and clamping device on the I-shaped steel by using an M16 bolt.

The invention has the technical effects and advantages that:

1. according to the invention, an externally-hung scaffold is installed by a method of pre-embedding a cast-in-place corridor U-shaped pipe clamp in advance and a method of I-shaped steel overhanging, and a layer-by-layer lifting and overturning method is adopted, so that a safe, reliable and convenient scaffold is provided for the construction of an assembly type high-rise building air corridor cast-in-place reinforced concrete structure;

2. according to the invention, the external hanging scaffold and the overhanging I-steel are connected by adopting the positioning clamping device, the overhanging I-steel is a symmetrical hanging scaffold, a horizontal pull rod is arranged in the middle of the 2 symmetrical external hanging scaffold, the external hanging scaffold adopts an integral welding structure, the height of the integral structure is not more than 2 roof heights, and the instability of the scaffold cannot be caused by the structural characteristics of the external hanging scaffold;

3. according to the invention, the integral welding structure for the externally-hung scaffold and the method for lifting and overturning by the tower crane layer by layer are simple and convenient to construct and operate, convenient to install and disassemble and low in economic benefit compared with the traditional scaffold.

Drawings

FIG. 1 is a schematic view of the installation process structure of an externally-hung scaffold of a cast-in-place reinforced concrete structure of a high-rise building air corridor of the invention;

FIG. 2 is a cross-sectional view of the externally hung scaffold of the air corridor cast-in-place reinforced concrete structure of the invention;

FIG. 3 is a schematic view of an externally-hung scaffold assembly structure of the air corridor cast-in-place reinforced concrete structure of the invention;

FIG. 4 is a schematic structural view of an externally-hung scaffold of an air corridor cast-in-place reinforced concrete structure according to the present invention;

FIG. 5 is a schematic cross-sectional view of a U-shaped pipe clamp pre-buried corridor cast-in-place reinforced concrete structure of the invention;

FIG. 6 is a schematic view of a U-shaped pipe clamp according to the present invention;

FIG. 7 is an assembly view of the positioning and clamping device for the joist steel of the present invention;

fig. 8 is a schematic structural view of the i-steel positioning and clamping device of the invention.

In the figure: the device comprises a connecting block-1, a first horizontal plate-2, a first inclined plate-3, a second horizontal plate-4, a second inclined plate-5, a U-shaped pipe-6, a nut-7 and a limiting plate-8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides an externally hung protective scaffold suitable for assembly type cast-in-place corridor construction, which is shown in the attached drawing and comprises a method for clamping and embedding an air corridor cast-in-place reinforced concrete structure by a U-shaped pipe, an I-shaped steel cantilever method, an I-shaped steel positioning and clamping device installation method and an externally hung scaffold installation method, and the method comprises the following specific steps:

step one, pre-embedding a U-shaped pipe clamp: d2 is not less than 25mm in the specification line diameter of the pre-buried U-shaped pipe clamp of 18mm or more, A is not less than 120mm in the width of the U-shaped pipe clamp of 200mm or more, h1 is not less than 380mm in the length of the U-shaped pipe clamp of 500mm or more, the U-shaped pipe clamp is pre-buried above a concrete cast-in-place corridor, and the U-shaped pipe clamp and main beam steel bars of the corridor need to be welded into a whole and form intersection welding to ensure the welding firmness of the U-shaped pipe clamp. The clamping pressure of the U-shaped pipe clamp which is welded and embedded is ensured to be not less than the specification range of 16# I-steel; the distance between the pre-embedded U-shaped pipe clamps is not more than 1800mm, and the size position error of the pre-embedded U-shaped pipe clamps in the horizontal and longitudinal directions is not more than +/-15 mm;

step two, I-steel installation of encorbelmenting: when the curing strength of the cast-in-situ corridor concrete is more than 75%, I-steel is installed, the specification of the I-steel is not less than 16#, the overhanging length of the I-steel is not more than 1500mm of the edge of a main beam structure of the corridor, a positioning clamping device is installed on the overhanging I-steel and used for connecting an external hanging scaffold, and each I-steel is provided with 4 positioning clamping devices and can axially displace in the I-steel. U type pipe strap adopts double nut clamp plate formula locking I-steel, guarantees the I-steel of encorbelmenting of installation and the vestibule structure straightness that hangs down. Ensuring the connection between the two U-shaped pipe clamp pressing plates on the I-steel and the corridor;

step three, installing and installing an external hanging scaffold: after the finished I-steel and the positioning clamping device are installed, the tower crane hoisting external hanging scaffold is installed on the I-steel overhanging part and connected with the positioning clamping device, and 2 or more I-steels are not less than cantilevered. Outer hanging scaffold frame is two layers and walks the guidance tape and weld dress structure support body, and the lower floor is "day" type structure, and 2 lugs are no less than in upper L type support body, upper L type support body dress and are used for the tower crane hoist and mount. The frame structure material is square steel pipe crossbeam 50 x 2.5, pole setting 50 x 2.5 square steel pipe, protection middle horizontal pole 30 x 1.2 square steel pipe, walkway plate is pattern (DB) board 2mm thick, skirting board height 250mm, protection net piece thickness 0.6mm, the lug material is not less than 10mm steel plate. The outer hanging scaffold is connected with a positioning clamping device on the I-steel by adopting an M16 bolt, and the gap between the outer hanging scaffold and the corridor structural body is not more than 200 mm. After the left and right externally-hung scaffold on the cross section of the corridor is installed on the I-steel, a horizontal cross rod needs to be pulled between the left and right externally-hung scaffolds at the 2 ends, the horizontal cross rod is installed close to the upper part as much as possible under the condition of not interfering the upper layer to construct a cast-in-place corridor, so that the mechanical balance of the left and right externally-hung scaffolds at the 2 ends is ensured, the number of the horizontal pull rods is not less than 2, and the horizontal pull rods are made of 50 x 2.5 square steel pipes. The turning plate is arranged on the externally-hung scaffold walkway plate, so that an overlarge cavity is not generated, and the safety is ensured;

step four, turning construction: and after the gallery formwork support and the steel bar binding of the upper construction layer are finished, pre-burying a U-shaped pipe clamp according to the step one, and then installing I-shaped steel and an externally hung scaffold according to the step two and the step three. And the mode of hoisting and overturning layer by layer is adopted, so that the layer-by-layer construction of the cast-in-place corridor part is ensured.

The positioning clamping device comprises a connecting block 1, a first clamping plate, a second clamping plate and a fastening piece, wherein the fastening piece clamps the first clamping plate and the second clamping plate at the top and the bottom of the top plate of the I-steel, the connecting block is fixedly arranged on the top surface of the first clamping plate, when the first clamping plate and the second clamping plate are clamped tightly, the connecting block 1 is positioned at the central position of the wide edge of the top plate of the I-steel, the first clamping plate is a bending piece and comprises a first horizontal plate 2 and a first inclined plate 3, the length of the first horizontal plate 2 is greater than the width of the I-steel, the first inclined plate 3 is attached to the inclined plane on one side of the bottom of the top plate of the I-steel, the second clamping plate is a bending piece and comprises a second horizontal plate 4 and a second inclined plate 5, the second horizontal plate 4 is attached to the part of the first horizontal plate 2 extending out of the I-steel, the second inclined plate 5 is attached to the inclined plane on the other side of the bottom of the top plate of the I-steel, the fastener be the bolt, the part that first horizontal plate 2 stretches out the I-steel on run through and seted up the screw, the screw is seted up in what second horizontal plate 4 corresponded, the bolt wear to establish in two screw holes, connecting block 1 on run through the connecting hole of front and back terminal surface.

In the first step, a U-shaped pipe clamp which needs to be pre-embedded in a corridor is cast in place, and the U-shaped pipe clamp needs to be welded with a main beam steel bar of the corridor; in the first step, the distance between U-shaped pipe clamps needing to be pre-embedded in a cast-in-place corridor is not more than 1800 mm; in the second step, the I-steel installation needs to be carried out, and the curing strength of the cast-in-place corridor concrete is more than 75 percent; the specification of the I-shaped steel installed in the second step is not less than 16 #; in the second step, the overhanging length of the I-shaped steel is not more than 1500mm of the edge of the main beam structure of the corridor; each joist steel in the second step is provided with 4 positioning clamping devices, and the joist steel can axially displace; the externally-hung scaffold in the third step is arranged on the overhanging part of the I-steel, and the number of the overhanging I-steel is not less than 2; outer hanging scaffold frame in step three is two layers and walks the guidance tape and weld dress structure support body, and the lower floor is the style of calligraphy structure body of day style of calligraphy, upper L type support body, and 2 lugs are no less than in upper L type support body dress and are used for the tower crane hoist and mount. The frame structure material is square steel pipe beam with 50 × 2.5, upright stanchion with 50 × 2.5, protective middle cross bar with 30 × 1.2 square steel pipe, walkway plate is pattern (DB) plate with 2mm thickness, skirting line height is 250mm, protective perforated net piece thickness is 0.6mm, lifting lug material is steel plate not less than 10 mm; in the third step, the externally-hung scaffold is connected with the positioning and clamping device on the I-steel by adopting an M16 bolt, and the gap between the externally-hung scaffold and the corridor structure body is not more than 200 mm; after the corridor cross section left and right external hanging type scaffold in the third step is installed on the I-steel, a horizontal pull rod needs to be pulled between the left and right external hanging type scaffolds at the 2 ends, the horizontal pull rod is installed near the upper part as much as possible under the condition of not interfering the upper layer to cast-in-place corridor construction, so as to ensure the mechanical balance of the left and right external hanging type scaffolds at the 2 ends, the number of the horizontal pull rods is not less than 2, and the material of the horizontal pull rod is 50 x 2.5 square steel pipe; and in the third step, a turning plate is arranged on the externally-hung scaffold walkway plate.

The U-shaped pipe clamp comprises a U-shaped pipe 6, a nut 7 and a limiting plate 8, wherein threads are formed in the side faces of two end portions of the U-shaped pipe, through holes are formed in two ends of the limiting plate 8, the I-shaped steel is arranged in the U-shaped pipe 6, the nut 7 is in threaded connection with the two end portions of the U-shaped pipe 6, and the limiting plate 8 presses the I-shaped steel downwards.

Referring to fig. 4, an outer hanging protective scaffold suitable for the construction of assembled cast-in-place vestibule, its I-shaped overhanging outer hanging scaffold frame body structure: comprises 2 parts of structures, the lower layer is a Japanese frame body, and the upper layer is an L-shaped frame body.

Referring to fig. 5-6, the U-shaped pipe clamp structure is pre-embedded in the overhead corridor cast-in-place reinforced concrete structure and welded with the main beam steel bars of the corridor.

Referring to fig. 7-8, the structural member of the positioning and clamping device for the h-beam is assembled and connected on the h-beam.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.