阅读说明：本技术 一种装配式梁板连接结构及其施工方法 (Assembly type beam-slab connecting structure and construction method thereof ) 是由 陈世伟 赵亮 喻翔 武云亮 南山松 于 2021-09-07 设计创作，主要内容包括：本发明公开了一种装配式梁板连接结构,包括预制梁、预制楼板、现浇芯梁及梁板连接件,梁板连接件包括连接板、C型板及U型固定板,预制梁设有第一螺纹孔,第一螺纹孔内设有第一螺栓,连接板设有U形开口及第一通孔,连接板与U型固定板通过第一螺栓相连；预制楼板内部开设有第二螺纹孔,第二螺纹孔内设有第二螺栓,连接板、C型板及预制楼板之间通过第二螺栓相连,C型板与连接板之间还设有减震层。本发明在安装时,只需将连接板上开设的U形开口与U型固定板相贴合,无需考虑预制楼板两端延展出的纵向筋,保证了安装的效率,预制楼板与预制梁之间通过连接板与C型板固定连接,提高了梁板整体性。减震层的设提高了梁板整体的抗震能力。(The invention discloses an assembled beam-slab connecting structure which comprises a prefabricated beam, a prefabricated floor slab, a cast-in-place core beam and a beam-slab connecting piece, wherein the beam-slab connecting piece comprises a connecting plate, a C-shaped plate and a U-shaped fixing plate; a second threaded hole is formed in the prefabricated floor slab, a second bolt is arranged in the second threaded hole, the connecting plate, the C-shaped plate and the prefabricated floor slab are connected through the second bolt, and a damping layer is further arranged between the C-shaped plate and the connecting plate. When the prefabricated floor slab is installed, the U-shaped openings formed in the connecting plates are only attached to the U-shaped fixing plates, longitudinal ribs extending from two ends of the prefabricated floor slab do not need to be considered, the installation efficiency is guaranteed, the prefabricated floor slab and the prefabricated beam are fixedly connected with the C-shaped plates through the connecting plates, and the integrity of the beam slab is improved. The shock-absorbing layer improves the overall shock resistance of the beam slab.)

1. The utility model provides an assembled beam slab connection structure which characterized in that: the prefabricated beam structure comprises a prefabricated beam (1), a prefabricated floor slab (2), a cast-in-place core beam (3) and a beam-slab connecting piece, wherein the prefabricated beam (1) is connected with the prefabricated floor slab (2) through the beam-slab connecting piece;

a reinforcement cage is embedded in the precast beam (1), and a floor reinforcement mesh is embedded in the precast floor slab (2);

the beam-slab connecting piece comprises a connecting plate (4), a C-shaped plate (5) and a U-shaped fixing plate (6), two rows of first threaded holes are formed in the precast beam (1), the first threaded holes are symmetrically arranged along the length direction of the precast beam (1), first bolts (7) are arranged in the first threaded holes, the U-shaped fixing plate (6) is outward in opening, and the U-shaped fixing plate (6) is welded at the position, corresponding to the first threaded holes, of the upper end face of the precast beam (1); the side section of the connecting plate (4) is Z-shaped, a U-shaped opening is formed in the outer edge of an upper transverse plate of the connecting plate (4), the opening direction of the U-shaped opening of the connecting plate (4) is opposite to that of the U-shaped fixing plate (6), a first through hole for a first bolt (7) to pass through is formed after the U-shaped opening and the U-shaped fixing plate are attached to each other, the first bolt passes through the first through hole and is in threaded connection with the first threaded hole, and therefore the connecting plate (4) and the U-shaped fixing plate (6) are fixed;

a second threaded hole is formed in the prefabricated floor slab (2), a second bolt (8) is arranged in the second threaded hole, the upper end face of the lower transverse plate of the C-shaped plate (5) is attached to the prefabricated floor slab (2), the lower end face of the upper transverse plate of the C-shaped plate (5) is attached to the prefabricated floor slab (2), a second through hole is formed in the position, corresponding to the second threaded hole, of the vertical plate of the C-shaped plate (5), a third through hole is formed in the middle of the vertical plate of the connecting plate (4), and the second bolt (8) sequentially penetrates through the third through hole and the second through hole to be connected with the second threaded hole, so that the connecting plate (4), the C-shaped plate (5) and the prefabricated floor slab (2) are fixed;

the beam plate connecting piece further comprises a damping layer (9), the upper end face of the damping layer (9) is attached to the lower transverse plate of the C-shaped plate (5), and the lower end face of the damping layer (9) is attached to the lower transverse plate of the connecting plate (4).

2. The assembled beam-slab connection structure as claimed in claim 1, wherein: the reinforcement cage includes splice bar (12) and a plurality of U type muscle (13), U type muscle (13) opening sets up downwards, each U type muscle (13) erect on splice bar (12).

3. The assembled beam-slab connection structure as claimed in claim 2, wherein: the floor reinforcing mesh comprises longitudinal ribs (10) and transverse ribs (11) which are laid in a criss-cross mode, the longitudinal ribs (10) are arranged along the length direction of the prefabricated floor slab (2), at least part of the longitudinal ribs extend out of the end faces of the two ends of the prefabricated floor slab (2), anchor ribs are formed on the outer side of the prefabricated floor slab (2), and the transverse ribs (11) are arranged along the width direction of the prefabricated floor slab (2).

4. The assembled beam-slab connection structure as claimed in claim 1, wherein: be provided with buffering bullet pad (14) between the riser of connecting plate (4) and precast beam (1), buffering bullet pad (14) are laminated mutually with the riser of connecting plate (4), the side of precast beam (1) respectively.

5. The assembled beam and slab connection structure as claimed in claim 4, wherein: buffering bullet pad (14) are connected in the side of precast beam (1) through mortise and tenon structure, mortise and tenon structure includes tenon (15) and fourth of the twelve earthly branches head, tenon (15) set up in the side of precast beam (1), the fourth of the twelve earthly branches head sets up in buffering bullet pad (14), tenon (15) embedding fourth of the twelve earthly branches head and with fourth of the twelve earthly branches head fixed connection.

6. The fabricated beam-slab connection structure as set forth in claim 3, wherein: the prefabricated floor slab (2) is provided with a plurality of prefabricated floor slabs (2), the prefabricated floor slabs (2) are sequentially connected, and the anchor bars of the two adjacent prefabricated floor slabs (2) are arranged in a staggered mode.

7. The assembled beam-slab connection structure as claimed in claim 1, wherein: the cast-in-place core beam (3) is arranged between the two precast floor slabs (2), and the top of the cast-in-place core beam (3) is flush with the precast floor slabs (2).

8. The assembled beam-slab connection structure as claimed in claim 1, wherein: the cast-in-place core beam (3) is of a concrete pouring structure, and the precast beam (1) and the precast floor slab (2) are of a concrete pouring structure.

9. A construction method of an assembly type beam-slab connection structure is characterized in that: the method comprises the following steps:

s100, arranging longitudinal ribs (10) and transverse ribs (11), wherein the longitudinal ribs (10) and the transverse ribs (11) are perpendicular to form a floor slab reinforcing mesh, pouring concrete outside the floor slab reinforcing mesh to form a prefabricated floor slab (2), and pouring a C-shaped plate (5) and the prefabricated floor slab (2) together;

a second threaded hole is formed in the prefabricated floor slab (2), a vertical plate of the C-shaped plate (5) is provided with a second through hole, and the middle part of the vertical plate of the connecting plate (4) is provided with a third through hole;

arranging connecting ribs (12) and U-shaped ribs (13) to form a reinforcement cage, pouring concrete outside the reinforcement cage to form a precast beam (1), and arranging a plurality of first threaded holes in the precast beam (1);

a U-shaped fixing plate (6) is welded at the upper end face of the precast beam (1) corresponding to the first threaded hole, and the opening of the U-shaped fixing plate (6) is arranged outwards;

the outer edge of the upper transverse plate of the connecting plate (4) is provided with a U-shaped opening, and the opening direction of the U-shaped opening is opposite to the U-shaped fixing plate (6);

s200, installing a damping layer (9) between the C-shaped plate (5) and the connecting plate (4), wherein the upper end surface of the damping layer (9) is attached to a lower transverse plate of the C-shaped plate (5), and the lower end surface of the damping layer (9) is attached to the lower transverse plate of the connecting plate (4);

s300, sequentially penetrating the second bolt (8) through the third through hole and the second through hole and embedding the second bolt into the second threaded hole, so that the connecting plate (4), the C-shaped plate (5) and the prefabricated floor slab (2) are fixed, and the prefabricated floor slab (2), the connecting plate (4) and the C-shaped plate (5) form a whole;

s400, hoisting and positioning the precast beam (1) and the precast floor slab (2) on site, enabling a U-shaped opening of an upper transverse plate of a connecting plate (4) to be attached to a U-shaped fixing plate (6) to form a first through hole, and enabling a first bolt to penetrate through the first through hole and be in threaded connection with a first threaded hole, so that the connecting plate (4) and the U-shaped fixing plate (6) are fixed, and the precast beam (1) and the precast floor slab (2) are fixed;

s500, sequentially connecting a plurality of prefabricated floor slabs (2), arranging anchor bars of two adjacent prefabricated floor slabs (2) in a staggered mode, and pouring in situ at the gap between the two adjacent prefabricated floor slabs (2) to form the cast-in-situ core beam (3).

10. The construction method of an assembled beam-slab connection structure according to claim 9, wherein: between the step S100 and the step S200, the method further includes: fixed buffering bullet pad (14) in precast beam side, buffering bullet pad (14) are connected in the side of precast beam (1) through tenon fourth of the twelve earthly branches structure, tenon fourth of the twelve earthly branches structure includes tenon (15) and fourth of the twelve earthly branches head, tenon (15) set up in the side of precast beam (1), the fourth of the twelve earthly branches head sets up in buffering bullet pad (14), tenon (15) embedding fourth of the twelve earthly branches head and with fourth of the twelve earthly branches head fixed connection.

Technical Field

The invention relates to the technical field of building construction, in particular to an assembly type beam-slab connection structure and a construction method thereof.

Background

The assembly type building has the advantages of cost reduction, pollution control and energy conservation as a green construction technology, obviously conforms to the development requirement of the era, is beneficial to improving the urban construction quality and promotes the working process of ecological construction. The fabricated building fully embodies the advantages of light dead weight, good earthquake resistance, short construction period and high benefit, has the characteristics of integration, industrialization and standardization, can realize the aims of high quality and low pollution of the building through the fine manufacturing of factories, the high-quality installation on site and the construction informatization management, and accords with the sustainable development concept, so that the fabricated building is a green building system which is suitable for the development trend of the building, and the advantages of the fabricated building have great potential in the future building market.

The prefabricated components are designed and produced by the design concept of 'equal cast-in-place', and then all prefabricated products are combined through a connecting process. Among prefabricated products, a Precast Concrete member (i.e., a PC structure, which is called as Precast Concrete throughout the english language) is an important component of a fabricated building, and is an important direction for the development of building structures in China. Compared with the traditional cast-in-place structure, the construction mode of carrying out factory production and assembly construction on the prefabricated part can play the roles of saving energy, protecting environment, shortening construction period, saving labor and the like, and meanwhile, the construction quality of a building can be effectively controlled, and the occurrence of engineering accidents is reduced.

The existing concrete member mounting modes mainly comprise the following two types, but all have certain defects: firstly, the precast floor slab adopts a rib outlet structure, and the rib outlet of the precast floor slab forms an anchor rib which is anchored into the support concrete beam, so that the safety of the concrete floor slab structure of the method can be effectively ensured, but because the support concrete beam and the reinforcement cage therein both adopt rectangular cross sections, when the precast floor slab is hoisted, the anchor rib of the precast floor slab interferes with the reinforcement cage of the support concrete, so that the hoisting of the precast floor slab is difficult, and the installation efficiency is greatly influenced; and secondly, the prefabricated floor slab cancels the rib, namely the prefabricated floor slab adopts a structure without anchoring into the support concrete beam, and the method solves the problem that the rib of the prefabricated floor slab interferes with the reinforcement cage of the support concrete beam when the prefabricated floor slab is hoisted, but the method saves the structure that the prefabricated floor slab is anchored into the support concrete beam, so that the safety and reliability of the concrete floor slab structure are reduced, the integrity of the floor slab is weakened, and certain potential safety hazards of the structure exist.

Chinese patent No. cn201910004124.x discloses an assembled beam-slab connection structure and a construction method thereof, including a precast beam and a U-shaped precast slab. Longitudinal ribs and U-shaped stirrups are pre-embedded in the precast slabs; the longitudinal ribs are arranged along the length direction of the prefabricated slab and extend out of the end faces of two ends of the prefabricated slab; vertical floor is equipped on both sides of the prefabricated slab in the width direction, the bottom side of the U-shaped stirrup is vertically arranged and embedded in the vertical floor, and the vertical floor extending out of both ends of the U-shaped stirrup deviates from the side of the prefabricated slab. The beam stirrups are embedded in the precast beam and vertically arranged and extend upwards out of the upper surface of the precast beam; the upper surface of the precast beam is provided with a plurality of grooves, and the interval between the adjacent grooves corresponds to the interval between the two vertical ribbed plates of the precast slab.

The assembled beam slab connection structure that this application document provided has good structural integrity, has improved main, secondary beam and has connected the biography force performance, has reduced wet operation in scene and construction process, has improved the efficiency of construction. However, in the application document, the situation that the U-shaped stirrups are abutted to the beam stirrups exists in the installation process of the precast slabs and the precast beams, and the installation efficiency is greatly influenced.

Chinese patent application No. CN201920496617.5 discloses an assembled beam-slab connection structure, which comprises a precast steel beam and a precast concrete slab, and further comprises a U-shaped combination member, a screw rod and a nut; the U-shaped combined component consists of a U-shaped bearing plate and a U-shaped fixing plate; the non-opening side of the U-shaped bearing plate is welded on the flange of the prefabricated steel beam; the opening side extends out of the prefabricated steel beam flange; the opening direction of the U-shaped fixing plate is opposite to that of the U-shaped bearing plate and is placed close to the U-shaped bearing plate; only through holes for the penetration of the screw rods are reserved after the U-shaped bearing plate is attached to the U-shaped fixing plate; one end of the screw rod is embedded into the precast concrete plate, and the other end of the screw rod penetrates through the U-shaped bearing plate and the U-shaped fixing plate and penetrates out of a round hole formed by the attachment of the U-shaped bearing plate and the U-shaped fixing plate; and the nut fixes the precast concrete plate below the U-shaped bearing plate after the screw rod penetrates out.

This application file has realized that the job site directly carries out prefabricated reinforced concrete beam slab and does not connect, has avoided the cast in situ, has improved the speed of on-the-spot assembly, has embodied the building theory of "steel construction + PC board" simultaneously. However, in this application document, precast steel beam and precast concrete board are connected through U type composite member only, and its installation node is weak, and the wholeness between roof beam and the board is general, and the shock resistance is relatively poor, has the potential safety hazard.

In conclusion, the precast concrete members in the prior art are difficult to hoist, the installation efficiency is low, or the integrity of the floor slab is general, so that certain potential safety hazards exist, and the seismic capacity is insufficient. Therefore, a new machine construction method for an assembly type beam-slab connection structure is needed, which can ensure the installation efficiency, and has good floor integrity and good seismic capacity.

Disclosure of Invention

The invention aims to improve the problems and provides a fabricated beam-slab connection structure and a construction method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an assembled beam slab connection structure, includes precast beam, precast floor, cast-in-place core beam and beam slab connecting piece, precast beam is connected through beam slab connecting piece with precast floor.

A reinforcement cage is pre-embedded in the precast beam, and a floor slab reinforcement mesh is pre-embedded in the precast floor slab; the beam-slab connecting piece comprises a connecting plate, a C-shaped slab and a U-shaped fixing plate, two rows of first threaded holes in the vertical direction are formed in the precast beam, the first threaded holes are symmetrically arranged along the length direction of the precast beam, first bolts are arranged in the first threaded holes, the U-shaped fixing plate is outward in opening, and the U-shaped fixing plate is welded at the position, corresponding to the first threaded holes, of the upper end surface of the precast beam; the side section of the connecting plate is Z-shaped, the outer edge of the upper transverse plate of the connecting plate is provided with a U-shaped opening, the opening direction of the U-shaped opening of the connecting plate is opposite to that of the U-shaped fixing plate, a first through hole for a first bolt to pass through is formed after the U-shaped opening of the connecting plate is attached to the U-shaped fixing plate, and the first bolt penetrates through the first through hole and is in threaded connection with the first threaded hole, so that the connecting plate and the U-shaped fixing plate are fixed.

The prefabricated floor is internally provided with a second threaded hole in the horizontal direction, a second bolt is arranged in the second threaded hole, the upper end surface of the lower transverse plate of the C-shaped plate is attached to the prefabricated floor, the lower end surface of the upper transverse plate of the C-shaped plate is attached to the prefabricated floor, a second through hole is formed in the position, corresponding to the second threaded hole, of the vertical plate of the C-shaped plate, a third through hole is formed in the middle of the vertical plate of the connecting plate, and the second bolt sequentially penetrates through the third through hole and the second through hole to be connected with the second threaded hole, so that the connecting plate, the C-shaped plate and the prefabricated floor are fixed to each other.

The beam plate connecting piece further comprises a damping layer, the upper end face of the damping layer is attached to the lower transverse plate of the C-shaped plate, and the lower end face of the damping layer is attached to the lower transverse plate of the connecting plate.

Preferably, the reinforcement cage comprises a connecting rib and a plurality of U-shaped ribs, openings of the U-shaped ribs are arranged downwards, and the U-shaped ribs are erected on the connecting rib.

Preferably, the floor slab reinforcing mesh comprises longitudinal ribs and transverse ribs which are laid in a criss-cross mode, the longitudinal ribs are arranged along the length direction of the prefabricated floor slab, at least part of the longitudinal ribs extend out of the end faces of two ends of the prefabricated floor slab, anchor ribs are formed on the outer side of the prefabricated floor slab, and the transverse ribs are arranged along the width direction of the prefabricated floor slab.

Preferably, a buffering elastic cushion is arranged between the vertical plate of the connecting plate and the precast beam and is respectively attached to the vertical plate of the connecting plate and the side face of the precast beam.

Preferably, the buffering bullet pad passes through the side of mortise-tenon joint structural connection at precast beam, the mortise-tenon joint structure includes tenon and mortise, the tenon sets up in precast beam's side, the mortise sets up in the buffering bullet pad, tenon embedding mortise and with mortise fixed connection.

Preferably, the prefabricated floor slabs are provided with a plurality of prefabricated floor slabs which are connected in sequence, and the anchor bars of two adjacent prefabricated floor slabs are arranged in a staggered mode.

Preferably, the cast-in-place core beam is arranged between two precast floor slabs, and the top of the cast-in-place core beam is flush with the precast floor slabs.

Preferably, the cast-in-place core beam is of a concrete pouring structure, and the precast beam and the precast floor slab are of a concrete pouring structure.

The invention also provides a construction method of the assembly type beam-slab connection structure, which is characterized by comprising the following steps: the method comprises the following steps:

s100, arranging longitudinal ribs and transverse ribs, wherein the longitudinal ribs and the transverse ribs are perpendicular to form a floor slab reinforcing mesh, pouring concrete outside the floor slab reinforcing mesh to form a prefabricated floor slab, and pouring a C-shaped plate and the prefabricated floor slab together;

a second threaded hole in the horizontal direction is formed in the prefabricated floor slab, a vertical plate of the C-shaped plate is provided with a second through hole, and the middle part of the vertical plate of the connecting plate is provided with a third through hole;

arranging connecting ribs and U-shaped ribs to form a reinforcement cage, pouring concrete outside the reinforcement cage to form a precast beam, and forming a plurality of first threaded holes in the vertical direction in the precast beam;

welding a U-shaped fixing plate at the upper end face of the precast beam corresponding to the first threaded hole, wherein the opening of the U-shaped fixing plate is arranged outwards;

the outer edge of the upper transverse plate of the connecting plate is provided with a U-shaped opening, and the opening direction of the U-shaped opening is opposite to the U-shaped fixing plate;

s200, installing a damping layer between the C-shaped plate and the connecting plate, wherein the upper end surface of the damping layer is attached to the lower transverse plate of the C-shaped plate, and the lower end surface of the damping layer is attached to the lower transverse plate of the connecting plate;

s300, sequentially penetrating the second bolt through the third through hole and the second through hole and embedding the second bolt into the second threaded hole, so that the connecting plate, the C-shaped plate and the prefabricated floor slab are fixed to each other, and the prefabricated floor slab, the connecting plate and the C-shaped plate form a whole;

s400, hoisting and positioning the precast beam and the precast floor slab on site, enabling a U-shaped opening of an upper transverse plate of a connecting plate to be attached to a U-shaped fixing plate to form a first through hole, and enabling a first bolt to penetrate through the first through hole and be in threaded connection with a first threaded hole to enable the connecting plate to be fixed with the U-shaped fixing plate, so that the precast beam and the precast floor slab are fixed;

s500, sequentially connecting a plurality of prefabricated floor slabs, arranging anchor bars of two adjacent prefabricated floor slabs in a staggered mode, and pouring in situ at the gap between the two adjacent prefabricated floor slabs to form the cast-in-situ core beam.

Further, between step S100 and step S200, the method further includes: the buffering bullet pad is fixed to precast beam side, the buffering bullet pad passes through the side of mortise-tenon structural connection at precast beam, the mortise-tenon structure includes tenon and fourth of the twelve earthly branches head, the tenon sets up in precast beam's side, the fourth of the twelve earthly branches head sets up in buffering bullet pad, tenon embedding fourth of the twelve earthly branches head and with fourth of the twelve earthly branches head fixed connection.

In conclusion, the beneficial technical effects of the invention are as follows:

1. when the prefabricated floor slab is installed, the U-shaped opening formed in the outer edge of the upper transverse plate of the connecting plate is attached to the U-shaped fixing plate, the first bolt penetrates through the first through hole formed after the U-shaped opening of the connecting plate is attached to the U-shaped fixing plate and is embedded into the first threaded hole, the connecting plate is fixed to the U-shaped fixing plate, the prefabricated beam fixedly connected with the U-shaped fixing plate is fixed to the prefabricated floor slab fixedly connected with the connecting plate, longitudinal ribs extending from two ends of the prefabricated floor slab do not need to be considered, and installation efficiency is guaranteed.

2. A second threaded hole is formed in the prefabricated floor slab, a second bolt is arranged in the second threaded hole, a second through hole is formed in a vertical plate of the C-shaped plate corresponding to the second threaded hole, a third through hole is formed in the middle of a vertical plate of the connecting plate, and the second bolt sequentially penetrates through the third through hole and the second through hole to be connected with the second threaded hole, so that the connecting plate, the C-shaped plate and the prefabricated floor slab are fixed to form a whole, namely, after the connecting plate is fixedly connected with the U-shaped fixing plate, the prefabricated floor slab is also fixed to the U-shaped fixing plate. Through the cooperation of each part is connected for precast floor and precast beam fixed connection have improved beam slab wholeness.

3. And a damping layer is arranged between the lower transverse plate and the connecting plate of the C-shaped plate, and the damping layer is arranged to improve the overall shock resistance of the beam plate.

4. When the prefabricated floor slabs are installed, the gap between every two adjacent prefabricated floor slabs is cast in situ to form a cast-in-situ core beam, and the integrity of the beam slab is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a top view of an assembled beam and slab connection structure according to the present disclosure;

fig. 2 is a schematic side view of an assembled beam-slab connection structure according to the present disclosure;

fig. 3 is a schematic diagram of arrangement of prefabricated floor slabs and prefabricated beam steel bars in the fabricated beam-slab connection structure.

Reference numerals: 1. prefabricating a beam; 2. prefabricating a floor slab; 3. casting a core beam in situ; 4. a connecting plate; 5. c-shaped plates; 6. a U-shaped fixing plate; 7. a first bolt; 8. a second bolt; 9. a shock-absorbing layer; 10. longitudinal ribs; 11. a transverse rib; 12. connecting ribs; 13. u-shaped ribs; 14. a buffer spring pad; 15. a tenon.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1 to 3, an assembly type beam-slab connection structure includes a precast beam 1, a precast floor slab 2, a cast-in-place core beam 3, and a beam-slab connection member. The precast beam 1 is connected with the precast floor slab 2 through a beam slab connecting piece. The cast-in-place core beam 3 is of a concrete pouring structure, and the precast beam 1 and the precast floor slab 2 are of a concrete pouring structure.

The precast beam 1 is embedded with a reinforcement cage, and the precast floor slab 2 is embedded with a floor slab reinforcement mesh. The steel reinforcement cage includes splice bar 12 and a plurality of U type muscle 13, and U type muscle 13 opening sets up downwards, and each U type muscle 13 erects on splice bar 12. The floor reinforcing mesh comprises longitudinal ribs 10 and transverse ribs 11 which are laid in a criss-cross mode, the longitudinal ribs 10 are arranged along the length direction of the prefabricated floor 2, at least part of the longitudinal ribs extend out of the end faces of two ends of the prefabricated floor 2, anchor ribs are formed on the outer side of the prefabricated floor 2, and the transverse ribs 11 are arranged along the width direction of the prefabricated floor 2.

The beam slab connecting piece includes connecting plate 4, C template 5 and U type fixed plate 6, and 1 inside first screw hole of seting up two rows of vertical directions of precast beam, first screw hole set up along precast beam length direction symmetry, and first screw hole is provided with first bolt 7, and 6 openings of U type fixed plate are outside, and U type fixed plate 6 welds and corresponds first screw hole department in the up end of precast beam 1. The cross-section of the side of the connecting plate 4 is Z-shaped, the outer edge of the upper transverse plate of the connecting plate 4 is provided with a U-shaped opening, the opening direction of the U-shaped opening of the connecting plate 4 is opposite to that of the U-shaped fixing plate 6, a first through hole through which the first bolt 7 can pass is formed after the connecting plate is attached to the U-shaped opening, and the first bolt passes through the first through hole and is in threaded connection with the first threaded hole, so that the connecting plate 4 is fixed with the U-shaped fixing plate 6.

The inside second screw hole of horizontal direction of seting up of prefabricated floor 2, second threaded hole is provided with second bolt 8, the up end of the lower diaphragm of C template 5 laminates with prefabricated floor 2 mutually, the lower terminal surface of the last diaphragm of C template 5 laminates with prefabricated floor 2 mutually, the riser of C template 5 corresponds second screw hole department and has seted up the second through-hole, the third through-hole has been seted up at the riser middle part of connecting plate 4, second bolt 8 passes third through-hole and second through-hole in proper order and is connected with the second screw hole, thereby make connecting plate 4, it is fixed mutually between C template 5 and the prefabricated floor 2.

The beam plate connecting piece further comprises a damping layer 9, the upper end face of the damping layer 9 is attached to the lower transverse plate of the C-shaped plate 5, and the lower end face of the damping layer 9 is attached to the lower transverse plate of the connecting plate 4.

Be provided with buffering bullet pad 14 between connecting plate 4's riser and precast beam 1, buffering bullet pad 14 laminates mutually with connecting plate 4's riser, precast beam 1's side respectively, and buffering bullet pad 14 passes through mortise and tenon structural connection in precast beam 1's side, and mortise and tenon structure includes tenon 15 and fourth of the twelve earthly branches, and tenon 15 sets up in precast beam 1's side, and the fourth of the twelve earthly branches setting is in buffering bullet pad 14, tenon 15 embedding fourth of the twelve earthly branches and with fourth of the twelve earthly branches fixed connection.

The prefabricated floor slabs 2 are provided with a plurality of prefabricated floor slabs 2 which are connected in sequence, and the anchor bars of two adjacent prefabricated floor slabs 2 are arranged in a staggered mode. The cast-in-place core beam 3 is arranged between the two precast floor slabs 2, and the top of the cast-in-place core beam 3 is flush with the precast floor slabs 2.

The beneficial effect of this embodiment does:

when the device is installed on site, the U-shaped opening formed in the outer edge of the upper transverse plate of the connecting plate 4 is attached to the U-shaped fixing plate 6, the first bolt penetrates through the first through hole formed after the U-shaped opening of the connecting plate 4 is attached to the U-shaped fixing plate 6 and is embedded into the first threaded hole, and the connecting plate 4 and the U-shaped fixing plate 6 can be fixed. The connecting plate 4 is fixed mutually with the U type fixed plate 6, namely make the precast beam 1 that the U type fixed plate 6 linked firmly fixed mutually with the precast floor slab 2 that the connecting plate 4 linked firmly, need not to consider the vertical muscle 10 that 2 both ends of precast floor slab extended out, guaranteed the efficiency of installation.

A second threaded hole is formed in the prefabricated floor slab 2, a second bolt 8 is arranged in the second threaded hole, a second through hole is formed in the position, corresponding to the second threaded hole, of the vertical plate of the C-shaped plate 5, and a third through hole is formed in the middle of the vertical plate of the connecting plate 4. The second bolt 8 that will set up passes the third through-hole and the second through-hole in proper order and is connected with the second screw hole to make and fix mutually between connecting plate 4, C template 5 and the prefabricated floor 2, form a whole, after connecting plate 4 and U type fixed plate 6 looks fixed connection, prefabricated floor 2 is fixed mutually with U type fixed plate 6 equally promptly. Through the cooperation of each part and connecting for precast floor 2 and precast beam 1 fixed connection have improved beam slab wholeness.

The gap between two adjacent prefabricated floor slabs 2 is cast in situ, so that a cast-in-situ core beam 3 is formed, the adjacent prefabricated floor slabs 2 are integrally formed by the cast-in-situ core beam 3, and the integrity of the beam slab is further improved.

And a damping layer 9 is arranged between the lower transverse plate of the C-shaped plate 5 and the connecting plate 4, and the damping layer 9 is arranged to improve the overall shock resistance of the beam plate.

Example 2

A construction method of an assembly type beam-slab connection structure comprises the following steps:

s100, arranging longitudinal ribs 10 and transverse ribs 11, wherein the longitudinal ribs 10 and the transverse ribs 11 are perpendicular to form a floor slab reinforcing mesh, pouring concrete outside the floor slab reinforcing mesh to form a prefabricated floor slab 2, and pouring the C-shaped plates 5 and the prefabricated floor slab 2 together;

a second threaded hole in the horizontal direction is formed in the prefabricated floor slab 2, a vertical plate of the C-shaped plate 5 is provided with a second through hole, and the middle part of the vertical plate of the connecting plate 4 is provided with a third through hole;

arranging connecting ribs 12 and U-shaped ribs 13 to form a reinforcement cage, pouring concrete outside the reinforcement cage to form a precast beam 1, and forming a plurality of first threaded holes in the vertical direction in the precast beam 1;

welding a U-shaped fixing plate 6 at the upper end face of the precast beam 1 corresponding to the first threaded hole, wherein the opening of the U-shaped fixing plate 6 is arranged outwards;

the outer edge of the upper transverse plate of the connecting plate 4 is provided with a U-shaped opening, and the opening direction of the U-shaped opening is opposite to the U-shaped fixing plate 6;

s200, installing a damping layer 9 between the C-shaped plate 5 and the connecting plate 4, wherein the upper end face of the damping layer 9 is attached to a lower transverse plate of the C-shaped plate 5, and the lower end face of the damping layer 9 is attached to a lower transverse plate of the connecting plate 4;

s300, sequentially penetrating a second bolt 8 through a third through hole and a second through hole and embedding the second bolt into a second threaded hole, so that the connecting plate 4, the C-shaped plate 5 and the prefabricated floor slab 2 are fixed, and the prefabricated floor slab 2, the connecting plate 4 and the C-shaped plate 5 form a whole;

s400, hoisting and positioning the precast beam 1 and the precast floor slab 2 on site, enabling a U-shaped opening of an upper transverse plate of a connecting plate 4 to be attached to a U-shaped fixing plate 6 to form a first through hole, and enabling a first bolt to penetrate through the first through hole and be in threaded connection with a first threaded hole, so that the connecting plate 4 is fixed with the U-shaped fixing plate 6, and the precast beam 1 is fixed with the precast floor slab 2;

s500, sequentially connecting the plurality of prefabricated floor slabs 2, arranging anchor bars of two adjacent prefabricated floor slabs 2 in a staggered mode, and pouring in situ at the gap between the two adjacent prefabricated floor slabs 2 to form the cast-in-situ core beam 3.

Further, between step S100 and step S200, the method further includes: at the fixed buffering bullet pad 14 of precast beam side, buffering bullet pad 14 passes through mortise and tenon structural connection in precast beam 1's side, and the mortise and tenon structure includes tenon 15 and fourth of the twelve earthly branches head, and tenon 15 sets up in precast beam 1's side, and the setting of fourth of the twelve earthly branches head is in buffering bullet pad 14, tenon 15 embedding fourth of the twelve earthly branches head and with fourth of the twelve earthly branches head fixed connection.

The working principle and the beneficial effects of the embodiment are as follows:

before the on-site construction, the prefabricated floor slab 2 and the prefabricated beam 1 are poured, and the C-shaped plate 5 and the prefabricated floor slab 2 are poured together. A plurality of first threaded holes are formed in the precast beam 1, and a second threaded hole is formed in the precast floor slab 2.

When the prefabricated floor slab is installed, only the U-shaped opening formed in the outer edge of the upper transverse plate of the connecting plate 4 is attached to the U-shaped fixing plate 6, the first bolt penetrates through the first through hole formed after the U-shaped opening of the connecting plate 4 is attached to the U-shaped fixing plate 6 and is embedded into the first threaded hole, the connecting plate 4 is fixed to the U-shaped fixing plate 6, the prefabricated beam 1 fixedly connected with the U-shaped fixing plate 6 is fixed to the prefabricated floor slab 2 fixedly connected with the connecting plate 4, longitudinal ribs 10 extending from two ends of the prefabricated floor slab 2 do not need to be considered, and installation efficiency is guaranteed.

The second bolt 8 that will set up passes the third through-hole and the second through-hole in proper order and is connected with the second screw hole to make and fix mutually between connecting plate 4, C template 5 and the prefabricated floor 2, form a whole, after connecting plate 4 and U type fixed plate 6 looks fixed connection, prefabricated floor 2 is fixed mutually with U type fixed plate 6 equally promptly.

Through the cooperation of each part and connecting for precast floor 2 and precast beam 1 fixed connection have improved beam slab wholeness.

When the prefabricated floor slabs 2 are installed, the gap between every two adjacent prefabricated floor slabs 2 is cast in situ to form a cast-in-situ core beam 3, and the integrity of the beam slab is further improved.

Be provided with buffer layer 9 between C template 5's lower diaphragm and the connecting plate 4, if take place the earthquake, buffer layer 9 plays the cushioning effect, reduces the earthquake to prefabricated floor 2's destruction.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.