Connecting structure for fabricated building and construction method of connecting structure

Abstract

The invention relates to the technical field of fabricated buildings, in particular to a connecting structure for a fabricated building and a construction method thereof, and the connecting structure for the fabricated building comprises a steel bar beam frame, a laminated slab, a rear-mounted connecting bar and a cast-in-place body; the laminated slab is arranged on one side of the steel bar beam frame, a prefabricated hole which is obliquely arranged up and down is formed in one end, close to the steel bar beam frame, of the laminated slab, the lower end of the prefabricated hole penetrates through one end, close to the steel bar beam frame, of the laminated slab, and the upper end of the prefabricated hole extends upwards away from the steel bar beam frame and penetrates through the upper end of the laminated slab; the rear-mounted connecting rib is arranged in the prefabricated hole in a penetrating manner, one end of the rear-mounted connecting rib protrudes out of the lower port of the prefabricated hole and extends into the steel bar beam frame, and the other end of the rear-mounted connecting rib protrudes out of the upper port of the prefabricated hole; the cast-in-place body connects the reinforced beam frame, the rear-mounted connecting ribs and the laminated slab into an integrated reinforced concrete structure; the construction inconvenience caused by prefabricating the horizontal reinforcing bars on the laminated slab is avoided, and the connection strength is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a connection structure for prefabricated buildings and a construction method thereof. Background Art

[0002] Prefabricated buildings have the advantages of energy saving, environmental protection, material saving, and short construction period. They are particularly suitable for buildings with many structural repetitions. Therefore, residential buildings, dormitory buildings, etc. use prefabricated buildings. Composite panels are the most common type of prefabricated components in prefabricated buildings, with a high utilization rate. However, composite panels have the defect of low construction efficiency during construction.

[0003] Specifically, in order to ensure the connection strength between the composite plate and the beam body, it is necessary to set ribs at the ends of the composite plate. There are two traditional methods for constructing composite plates. The first is to tie the steel beam frame first and then lay the composite plate. Once the steel beam frame is tied, there is interference between the ribs and the steel beam frame. When hoisting the composite plate, it is necessary to first set the horizontal distance between the composite plate and the steel beam frame farther, and then move the composite plate horizontally to insert the ribs into the steel beam frame. The installation space requirements for the composite plate are relatively large, and the ribs are difficult to insert into the beam smoothly. Sometimes the ribs need to be forcibly bent and inserted, which is not convenient for construction. The second method is to lay the composite plate first and then tie the steel beam frame. At this time, the process of tying the steel beam frame is inconvenient due to the influence of the ribs of the composite plate. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the connection structure between the composite plate and the steel beam frame in the existing prefabricated building is not convenient for construction.

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide a connection structure for assembled buildings, comprising: a steel beam frame, a composite plate, a post-type connection bar and a cast-in-place body;

[0006] The composite plate is arranged on one side of the steel beam frame, and a prefabricated hole is provided at one end of the composite plate close to the steel beam frame, and the prefabricated hole is arranged obliquely up and down, and the lower end of the prefabricated hole passes through the end of the composite plate close to the steel beam frame, and the upper end of the prefabricated hole extends away from the steel beam frame and upward, and passes through the upper end of the composite plate;

[0007] The post-type connecting bar is inserted into the prefabricated hole, one end of the post-type connecting bar protrudes from the lower end of the prefabricated hole and extends into the steel beam frame, and the other end of the post-type connecting bar protrudes from the upper end of the prefabricated hole;

[0008] The cast-in-place body is integrally cast on the upper end of the composite slab and the steel beam frame. The cast-in-place body connects the steel beam frame, the post-installed connecting bars protruding out of the lower end of the precast hole, the post-installed connecting bars protruding to the upper end of the precast hole, and the composite slab into an integrated reinforced concrete structure.

[0009] As a preferred solution, the portion of the rear-mounted connecting rib protruding to the upper end of the composite plate includes a forward section and a bent section, the forward section is arranged inclined up and down, and the bent section extends parallel to the direction of the composite plate.

[0010] As a preferred embodiment, the composite plate includes a composite plate body and a plurality of connecting members, wherein the connecting members are arranged horizontally at intervals, the lower end of each connecting member is fixed on the composite plate body, and the upper end of each connecting member protrudes upwardly from the composite plate body.

[0011] As a preferred embodiment, the composite plate body includes a skeleton structure and a concrete matrix cast on the skeleton structure, the lower end of each connecting member is fixedly connected to the skeleton structure, and the concrete matrix connects the skeleton structure and each connecting member into an integrated reinforced concrete structure.

[0012] As a preferred solution, the skeleton structure includes a plurality of first steel bars, each of which extends in a length direction perpendicular to the steel bar beam frame, and each of which is parallel and spaced apart along the length direction of the steel bar beam frame;

[0013] Each of the connecting parts includes a second steel bar and a plurality of connecting bar groups. Each of the second steel bars is arranged above the main body of the composite plate. Each of the second steel bars extends along the length direction of the steel bar beam frame. A connecting bar group is provided at a position where the same second steel bar is opposite to each of the first steel bars above and below. The lower end of each of the connecting bar groups is fixedly connected to each of the first steel bars, and the upper end of each of the connecting bar groups protrudes out of the main body of the composite plate and is fixedly connected to the second steel bar located above it.

[0014] As a preferred embodiment, each of the connecting rib groups includes a first connecting rib and a second connecting rib, and the first connecting rib and the second connecting rib of the same connecting rib group are arranged in the form of two waists of an isosceles triangle structure; the lower end of the first connecting rib and the lower end of the second connecting rib of the same connecting rib group are both fixed to the same first steel bar, and the upper end of the first connecting rib and the upper end of the second connecting rib of the same connecting rib group are both fixed to the same second steel bar.

[0015] A construction method of the above-mentioned prefabricated building connection structure comprises the following steps:

[0016] Constructing the steel beam frame and the composite slab so that at least one side of the steel beam frame is provided with the composite slab;

[0017] Inserting a post-type connecting bar into the prefabricated hole of the composite plate, so that one end of the post-type connecting bar protrudes from the lower end of the prefabricated hole and extends into the steel beam frame, and the other end of the post-type connecting bar protrudes from the upper end of the prefabricated hole;

[0018] The cast-in-place body is constructed by connecting the steel beam frame, the post-type connecting bars protruding out of the lower end of the precast hole, the post-type connecting bars protruding to the upper end of the precast hole, and the composite plate into an integrated reinforced concrete structure.

[0019] As a preferred solution, after arranging a composite plate on at least one side of the steel beam frame and before constructing the cast-in-place body, it also includes: laying pipelines on the composite plate; and burying the pipelines in the cast-in-place body during the construction of the cast-in-place body.

[0020] As a preferred solution, before arranging the composite plate on at least one side of the steel bar beam frame, the method further includes: constructing a support frame for supporting the composite plate.

[0021] As a preferred solution, the support frame is a lifting frame. When a composite plate is set on at least one side of the steel beam frame, the composite plate is first set on the upper end of the lifting frame, and then the height of the lifting frame is adjusted to the set position.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The connection structure for assembled buildings of the present invention comprises: a steel beam frame, a composite plate, a post-type connection bar and a cast-in-place body; the composite plate is arranged on one side of the steel beam frame, and a prefabricated hole is arranged at one end of the composite plate close to the steel beam frame, the prefabricated hole is arranged obliquely up and down, the lower end of the prefabricated hole passes through the end of the composite plate close to the steel beam frame, the upper end of the prefabricated hole extends away from the steel beam frame and upward, and passes through the upper end of the composite plate; the post-type connection bar is passed through the prefabricated hole, one end of the post-type connection bar protrudes from the lower end of the prefabricated hole and extends into the steel beam frame, and the post-type connection bar is passed through the prefabricated hole. The other end of the post-type connecting bar protrudes from the upper end of the precast hole; the post-type connecting bar can be inserted into the precast hole after the composite slab is placed on one side of the steel beam frame, avoiding the construction inconvenience caused by prefabricating beard bars on the composite slab, and the cast-in-place body is integrally cast on the upper end of the composite slab and the steel beam frame. The cast-in-place body connects the steel beam frame, the post-type connecting bar protruding to the lower end of the precast hole, the post-type connecting bar protruding to the upper end of the precast hole, and the composite slab into an integrated reinforced concrete structure, thereby ensuring the connection strength of the connection structure for prefabricated buildings of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of the connection structure for the prefabricated building of the present invention;

[0025] Figure 2 for Figure 1 A partial enlarged view of point C in the middle;

[0026] Figure 3 It is a schematic diagram of the connection structure for the prefabricated building of the present invention before pouring the cast-in-place body;

[0027] Figure 4 It is a structural schematic diagram of the composite plate;

[0028] In the figure, 1. steel beam frame, 2. composite slab, 21. composite slab body, 211. skeleton structure, 2111. first steel bar, 212. concrete matrix, 2121. prefabricated hole, 22. connecting piece, 221. second steel bar, 222. connecting bar group, 2221. first connecting bar, 2222. second connecting bar, 3. post-installed connecting bar, 31. extended section, 32. bent section, 4. cast-in-place body, 5. reinforcing bar. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.

[0031] like Figures 1 to 4As shown, a preferred embodiment of the connection structure for prefabricated buildings of the present invention comprises: a steel beam frame 1, a composite plate 2, a post-type connecting rib 3 and a cast-in-place body 4; the composite plate 2 is arranged on one side of the steel beam frame 1, and a prefabricated hole 2121 is provided at one end of the composite plate 2 close to the steel beam frame 1, and the prefabricated hole 2121 is arranged up and down obliquely, and the lower end of the prefabricated hole 2121 passes through the end of the composite plate 2 close to the steel beam frame 1, and the upper end of the prefabricated hole 2121 extends away from the steel beam frame 1 and upward, and passes through the upper end of the composite plate 2; the prefabricated hole 2121 provides space for the installation of the post-type connecting rib 3, and positions the post-type connecting rib 3 The installation position of the post-type connecting bar 3 is passed through the prefabricated hole 2121, one end of the post-type connecting bar 3 protrudes from the lower end of the prefabricated hole 2121 and extends into the steel beam frame 1, and the other end of the post-type connecting bar 3 protrudes from the upper end of the prefabricated hole 2121; the cast-in-place body 4 is integrally cast on the upper end of the composite plate 2 and the steel beam frame 1, and the cast-in-place body 4 connects the steel beam frame 1, the post-type connecting bar 3 protruding from the lower end of the prefabricated hole 2121, the post-type connecting bar 3 protruding from the upper end of the prefabricated hole 2121, and the composite plate 2 into an integrated reinforced concrete structure, thereby ensuring the connection strength of the connection structure for prefabricated buildings of the present invention. The connection structure for prefabricated buildings of the present invention overcomes the defects of the traditional connection relying on beard bars, which is complicated and inconvenient. When installing the composite slab 2, there is no need to reserve a large horizontal distance to deal with the interference problem between the beard bar and the steel beam frame 1, and it also avoids the need to forcibly bend the beard bar due to the difficulty in inserting the beard bar. The construction personnel can install the composite slab 2 more smoothly and efficiently, which greatly improves the convenience of on-site construction and effectively shortens the construction period. Moreover, through the cooperation of the post-type connecting ribs 3 and the prefabricated holes 2121 and the integral casting of the cast-in-place body 4, a tight integrated structure is formed between the components. Compared with the traditional beard bar connection method, it can more evenly and effectively transmit and bear various loads on the building structure, greatly enhancing the connection stability between the composite slab 2 and the steel beam frame 1, and providing a strong guarantee for the safety and reliability of the overall structure of the prefabricated building. In addition, due to factors such as the difficulty in inserting the beard bar, traditional construction is prone to non-standard operations, resulting in uneven quality at different construction stages or under the operation of different construction personnel. This connection structure is constructed according to the established design and process. As long as it is operated in accordance with the corresponding requirements, it can ensure the stability and consistency of the construction quality and reduce the subsequent maintenance costs and safety hazards caused by quality differences.

[0032] Among them, the part of the post-type connecting rib 3 protruding to the upper end of the composite plate 2 includes a forward section 31 and a bent section 32, the forward section 31 is arranged in an up-and-down tilted manner, and the bent section 32 extends parallel to the direction of the composite plate 2. The forward section 31 is arranged in an up-and-down tilted manner, and the forward section 31 extends naturally along the tilt angle of the prefabricated hole 2121, and the connecting rib passing through the prefabricated hole 2121 can transition to the bent section 32 at a reasonable angle; the bent section 32 extends parallel to the direction of the composite plate 2, and the setting of the bent section 32 increases the connection strength between the connecting rib and the cast-in-place body 4 located at the upper end of the composite plate 2, further enhancing the connection strength of the connection structure for prefabricated buildings of this embodiment.

[0033] In this embodiment, the composite plate 2 includes a composite plate body 21 and a plurality of connectors 22, each connector 22 is arranged horizontally at intervals, the lower end of each connector 22 is fixed on the composite plate body 21, and the upper end of each connector 22 protrudes upward to the outside of the composite plate body 21. Specifically, each connector 22 is evenly arranged at a certain interval in the horizontal direction, and the lower end of each connector 22 is fixed on the composite plate body 21 to ensure reliable connection between the connector 22 and the composite plate body 21; and the upper end of each connector 22 protrudes upward to the outside of the composite plate body 21. When pouring concrete on the upper end of the composite plate 2, the connector 22 protruding to the upper end of the composite plate 2 is buried in the concrete, thereby enhancing the connection strength between the composite plate 2 and the cast-in-place body 4. In order to improve the structural strength of the cast-in-place body 4, in other embodiments of the present invention, before casting the cast-in-place body 4, reinforcing ribs 5 are tied on the composite plate. The reinforcing ribs 5 are L-shaped and have two straight arm sections. One straight arm section is tied to the steel beam 1, and the other straight arm section is arranged along the composite plate.

[0034] Furthermore, the composite plate body 21 includes a skeleton structure 211 and a concrete base 212 cast on the skeleton structure 211, and prefabricated holes 2121 are set in the concrete base 212. The lower ends of the connectors 22 are fixedly connected to the skeleton structure 211, and the concrete base 212 connects the skeleton structure 211 and the connectors 22 into an integrated reinforced concrete structure. Specifically, the lower ends of the connectors 22 can be connected to the skeleton structure 211 by reliable connection methods such as welding and binding to ensure that the connection between the connectors 22 and the skeleton structure 211 is firm. Then, by pouring concrete, the concrete is filled around the skeleton structure 211 and the connection parts between the connectors 22 and the skeleton structure 211, and the skeleton structure 211 and the connectors 22 are connected into an integrated reinforced concrete structure, thereby ensuring the integrity and stability of the internal structure of the composite plate body 21.

[0035] Among them, the skeleton structure 211 includes multiple first steel bars 2111, each of which extends in a length direction perpendicular to the steel beam frame 1, and each of which is parallel and spaced along the length direction of the steel beam frame 1; each connecting member 22 includes a second steel bar 221 and multiple connecting bar groups 222, each of which is arranged above the composite plate body 21, and each of which extends in the length direction of the steel beam frame 1, and a connecting bar group 222 is provided at a position where the same second steel bar 221 and each of the first steel bars 2111 are opposite to each other up and down, and the lower end of each connecting bar group 222 is fixedly connected to each of the first steel bars 2111, and the upper end of each connecting bar group 222 protrudes out of the composite plate body 21 and is fixedly connected to the second steel bar 221 located above it. Specifically, multiple first steel bars 2111 form a transverse support structure of the composite plate body 21, and the second steel bars 221 extend longitudinally and are connected to the first steel bars 2111 through the connecting bar group 222. The criss-cross steel bar layout constructs a stable steel frame system that can resist external forces from different directions, enhance the bearing capacity of the composite plate 2 in various dimensions, and enable it to better bear floor loads and other functions in prefabricated buildings.

[0036] Furthermore, in this embodiment, each connecting rib group 222 includes a first connecting rib 2221 and a second connecting rib 2222, and the first connecting rib 2221 and the second connecting rib 2222 of the same connecting rib group 222 are arranged in the form of two waists of an isosceles triangle structure; the lower end of the first connecting rib 2221 and the lower end of the second connecting rib 2222 of the same connecting rib group 222 are both fixed to the same first steel bar 2111, and the upper end of the first connecting rib 2221 and the upper end of the second connecting rib 2222 of the same connecting rib group 222 are both fixed to the same second steel bar 221. Based on the basic mechanical principle of triangle stability, the bearing capacity and stability of the connecting rib group 222 itself are effectively enhanced, thereby improving the stability of the entire connecting member 22 and the composite plate 2 structure.

[0037] An embodiment of the construction method of the above-mentioned prefabricated building connection structure comprises the following steps:

[0038] First, the steel beam frame 1 and the composite plate 2 are constructed so that at least one side of the steel beam frame 1 is provided with the composite plate 2. In this embodiment, the steel beam frame 1 is constructed first; during construction, the steel beam frame 1 is constructed at the construction site according to the architectural design drawings and relevant specifications. During the construction process, operations are performed according to the designed steel bar model, specification, quantity and binding method, etc., to ensure that the size, shape and mechanical properties of the steel beam frame 1 meet the predetermined standards; then, the composite plate 2 is set on at least one side of the steel beam frame 1; after the construction of the steel beam frame 1 is completed, the composite plate 2 is hoisted to the corresponding side of the steel beam frame 1 for placement. Before hoisting the composite board 2, draw the elevation control line on the wall, give the bottom elevation of the composite board 2, and when hoisting the composite board 2, try to reduce the bending moment of the composite board 2 in the non-prestressed direction due to its own weight as much as possible. The composite board 2 is hoisted by prefabricated component hoisting beams. According to the relevant requirements, at least 4 hoisting points are set to ensure the smooth hoisting of the composite board 2. When hoisting, try to hoist first, stop at 50cm from the ground, check the stress of the wire rope and the hook, keep the composite board 2 horizontal, and then hoist it to the working position. The floor is above the ground; during the placement process, the relative position between the composite board 2 and the steel beam frame 1 must be accurate according to the pre-set position and installation accuracy requirements, so as to prepare for the subsequent operations such as the threading of the post-mounted connecting ribs 3; when in place, the composite board 2 must be installed vertically from top to bottom, and pause slightly 20 cm above the working floor. The construction personnel hold the floor slab by hand to adjust the direction, align the edge of the board with the placement position line on the wall, and stop slowly when putting it down. It is strictly forbidden to put it down quickly to avoid excessive impact force causing cracks on the board surface. Hoisting should be stopped when the wind is above level 5. When the position of the composite board 2 needs to be adjusted locally, it should be padded with small wooden blocks, and the crowbar should not be used directly to avoid damaging the edges and corners of the board. The length of the shelving should be guaranteed, and the allowable deviation should not be greater than 5 mm. After the composite board 2 is installed, it should be marked and checked. If the elevation does not meet the requirements, it needs to be readjusted. In other embodiments of the present invention, the composite board 2 can also be hoisted first, and the steel beam frame 1 can be tied after the composite board 2 is hoisted in place.

[0039] In this embodiment, after the elevation of the composite plate 2 is adjusted to the right position, the post-type connecting rib 3 is inserted into the prefabricated hole 2121 of the composite plate 2, so that one end of the post-type connecting rib 3 protrudes from the lower end of the prefabricated hole 2121 and extends into the steel beam frame 1, and the other end of the post-type connecting rib 3 protrudes from the upper end of the prefabricated hole 2121;

[0040] After the installation of each connecting bar is completed, the cast-in-place body 4 is constructed to connect the steel beam frame 1, the post-type connecting bar 3 protruding to the lower end of the prefabricated hole 2121, the post-type connecting bar 3 protruding to the upper end of the prefabricated hole 2121, and the composite plate 2 into an integrated reinforced concrete structure. In this step, concrete is poured on the upper end of the composite plate 2 and the steel beam frame 1, so that the concrete fully fills the gaps between the components. After solidification, the cast-in-place body 4 firmly connects the steel beam frame 1, the post-type connecting bar 3 protruding to the lower end of the prefabricated hole 2121, the post-type connecting bar 3 protruding to the upper end of the prefabricated hole 2121, and the composite plate 2 into an integrated reinforced concrete structure, completing the construction of the entire prefabricated building connection structure.

[0041] Among them, after the composite plate 2 is set on at least one side of the steel beam frame 1 and before the cast-in-place body 4 is constructed, it also includes: laying pipelines on the composite plate 2; when constructing the cast-in-place body 4, the pipelines are buried in the cast-in-place body 4, the laying of the pipelines is convenient, the laying efficiency is high, and the concealed installation of the pipelines is realized, avoiding the exposure of the pipelines to affect the beauty of the building and the safety of use.

[0042] In this embodiment, before setting the composite plate 2 on at least one side of the steel beam frame 1, it also includes: constructing a support frame for supporting the composite plate 2, the support frame plays a role in supporting the composite plate 2, so that the installation height of the composite plate 2 meets the set requirements.

[0043] The support frame is a lifting frame. When the composite plate 2 is arranged on at least one side of the steel beam frame 1, the composite plate 2 is first arranged on the upper end of the lifting frame, and then the height of the composite plate 2 is adjusted to the set position by adjusting the height of the lifting frame. The support frame is set as a lifting frame, which is convenient for adjusting the elevation of the composite plate 2. In this embodiment, the lifting frame is a frame body formed by a plurality of threaded sleeves with telescopic function.

[0044] In summary, the connection structure for prefabricated buildings of the present invention avoids the construction inconvenience caused by prefabricated ribs on the composite slab 2. The cast-in-place body 4 is integrally cast at the upper end of the composite slab 2 and the steel beam frame 1. The cast-in-place body 4 connects the steel beam frame 1, the post-installed connection ribs 3 protruding from the lower end of the prefabricated hole 2121, the post-installed connection ribs 3 protruding from the upper end of the prefabricated hole 2121, and the composite slab 2 into an integrated reinforced concrete structure, thereby ensuring the connection strength of the connection structure for prefabricated buildings of the present invention.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A connection structure for assembled buildings, characterized in that: include: A steel beam frame (1), a composite slab (2), a post-type connecting rib (3) and a cast-in-place body (4); The composite plate (2) is arranged on one side of the steel beam frame (1); a prefabricated hole (2121) is provided at one end of the composite plate (2) close to the steel beam frame (1); the prefabricated hole (2121) is arranged obliquely up and down; the lower end of the prefabricated hole (2121) passes through one end of the composite plate (2) close to the steel beam frame (1); the upper end of the prefabricated hole (2121) extends away from the steel beam frame (1) and upward, and passes through the upper end of the composite plate (2); The post-type connecting bar (3) is inserted into the prefabricated hole (2121), one end of the post-type connecting bar (3) protrudes from the lower end of the prefabricated hole (2121) and extends into the steel beam frame (1), and the other end of the post-type connecting bar (3) protrudes from the upper end of the prefabricated hole (2121); The cast-in-place body (4) is integrally cast on the upper end of the composite slab (2) and the steel beam frame (1); the cast-in-place body (4) connects the steel beam frame (1), the post-type connecting ribs (3) protruding from the lower end of the precast hole (2121), the post-type connecting ribs (3) protruding from the upper end of the precast hole (2121), and the composite slab (2) into an integrated reinforced concrete structure.

2. The connection structure for assembled buildings according to claim 1, characterized in that: The portion of the rear-mounted connecting rib (3) protruding from the upper end of the composite plate (2) comprises a forward section (31) and a bent section (32); the forward section (31) is arranged tilted up and down, and the bent section (32) extends parallel to the direction of the composite plate (2).

3. The connection structure for assembled buildings according to claim 1, characterized in that: The composite plate (2) comprises a composite plate body (21) and a plurality of connecting members (22), wherein the connecting members (22) are arranged horizontally at intervals, the lower end of each connecting member (22) is fixed on the composite plate body (21), and the upper end of each connecting member (22) protrudes upwardly out of the composite plate body (21).

4. The connection structure for assembled buildings according to claim 3, characterized in that: The composite plate body (21) comprises a skeleton structure (211) and a concrete base (212) cast on the skeleton structure (211); the lower end of each of the connecting members (22) is fixedly connected to the skeleton structure (211); and the concrete base (212) connects the skeleton structure (211) and each of the connecting members (22) into an integrated reinforced concrete structure.

5. The connection structure for assembled buildings according to claim 4, characterized in that: The skeleton structure (211) comprises a plurality of first steel bars (2111), each of the first steel bars (2111) extending in a length direction perpendicular to the steel bar beam frame (1), and each of the first steel bars (2111) is distributed in parallel and at intervals along the length direction of the steel bar beam frame (1); Each of the connecting members (22) comprises a second steel bar (221) and a plurality of connecting bar groups (222); each of the second steel bars (221) is arranged above the composite plate body (21); each of the second steel bars (221) extends along the length direction of the steel bar beam frame (1); a connecting bar group (222) is arranged at a position where the same second steel bar (221) and each of the first steel bars (2111) are opposite to each other above and below; the lower end of each of the connecting bar groups (222) is fixedly connected to each of the first steel bars (2111); and the upper end of each of the connecting bar groups (222) protrudes out of the composite plate body (21) and is fixedly connected to the second steel bar (221) located above it.

6. The connection structure for assembled buildings according to claim 5, characterized in that: Each of the connecting rib groups (222) comprises a first connecting rib (2221) and a second connecting rib (2222); the first connecting rib (2221) and the second connecting rib (2222) of the same connecting rib group (222) are arranged in the form of two waists of an isosceles triangle structure; the lower end of the first connecting rib (2221) and the lower end of the second connecting rib (2222) of the same connecting rib group (222) are both fixed to the same first steel bar (2111); the upper end of the first connecting rib (2221) and the upper end of the second connecting rib (2222) of the same connecting rib group (222) are both fixed to the same second steel bar (221).

7. A construction method for the connection structure for assembled buildings according to any one of claims 1 to 6, characterized in that: The following steps are involved: Constructing the steel beam frame (1) and the composite plate (2) so that at least one side of the steel beam frame (1) is provided with the composite plate (2); The post-type connecting bar (3) is inserted into the prefabricated hole (2121) of the composite plate (2), so that one end of the post-type connecting bar (3) protrudes from the lower end of the prefabricated hole (2121) and extends into the steel beam frame (1), and the other end of the post-type connecting bar (3) protrudes from the upper end of the prefabricated hole (2121); The cast-in-place body (4) is constructed to connect the steel beam frame (1), the post-type connecting ribs (3) protruding from the lower end of the precast hole (2121), the post-type connecting ribs (3) protruding from the upper end of the precast hole (2121), and the composite plate (2) into an integrated reinforced concrete structure.

8. The construction method of the connection structure for prefabricated buildings according to claim 7, characterized in that: After the construction of the steel beam frame (1) and the composite slab (2) and before the construction of the cast-in-place body (4), the method further comprises: laying pipelines on the composite slab (2); and burying the pipelines in the cast-in-place body (4) when constructing the cast-in-place body (4).

9. The construction method of the connection structure for prefabricated buildings according to claim 7, characterized in that: Before arranging the composite plate (2) on at least one side of the steel bar beam frame (1), the method further comprises: constructing a support frame for supporting the composite plate (2).

10. The construction method of the connection structure for prefabricated buildings according to claim 9, characterized in that: The support frame is a lifting frame. When a composite plate (2) is arranged on at least one side of the steel bar beam frame (1), the composite plate (2) is first arranged on the upper end of the lifting frame, and then the height of the composite plate (2) is adjusted to a set position by adjusting the height of the lifting frame.

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