A prefabricated coupling beam structure and a prefabricated coupling beam structure and prefabricated shear wall dry connection module

Abstract

The application discloses a prefabricated coupling beam structure and a prefabricated coupling beam structure and prefabricated shear wall dry connection module, belongs to the field of civil construction engineering, and aims to solve the problems of poor manufacturing efficiency of the prefabricated coupling beam structure, inconvenience in assembly of the beam body structure and the floor, and influence on the assembly efficiency of the prefabricated building. The dry connection module comprises the prefabricated coupling beam structure and four prefabricated shear wall plates. The four prefabricated shear wall plates are distributed at four corners of the prefabricated coupling beam structure and are fixed through a dry connection mode. The prefabricated coupling beam structure comprises a supporting steel plate, two prefabricated connecting blocks and two prefabricated beam bodies. The supporting steel plate and the two prefabricated beam bodies form a middle beam body. The two prefabricated connecting blocks are distributed at two ends of the middle beam body and are also fixed through the dry connection mode. The application is mainly used as a dry connection module in an existing prefabricated building system.

Description

Technical Field

[0001] This utility model belongs to the field of civil engineering, specifically relating to a precast coupling beam structure and a precast coupling beam structure and a precast shear wall dry connection module. Background Technology

[0002] Prefabricated construction is a major form of residential industrialization. Prefabricated buildings generally refer to the prefabrication of building components in factories, followed by on-site connection to form a structural whole. Factory prefabrication of components is less affected by seasonal and climatic conditions, and the use of factory mixing and control of concrete ensures consistent component quality. Furthermore, it significantly reduces on-site wet work, greatly improving construction efficiency and saving time, thus minimizing interference and impact on the construction site and its surrounding environment, aligning with the development trend of green construction. Among prefabricated building structural systems, shear wall structures are widely used, making their development a major structural system and type for realizing residential industrialization. Prefabricated shear wall structures include prefabricated wall segments, prefabricated connecting beams, and prefabricated floor slabs as major load-bearing components. The connection method of these components is crucial to prefabricated building structural technology. Improving overall connection performance, reducing connection costs, and increasing construction connection efficiency have become research and application hotspots in building industrialization and residential industrialization in recent years.

[0003] Currently, coupling beams for precast shear wall segments mainly come in two forms: cast-in-place coupling beams and precast coupling beams. The former is called wet connection, while the latter generally uses a dry connection with the precast wall segment. Therefore, there are also integral casting or wet connection methods between coupling beams and floor slabs. Currently, dry connection systems between precast wall segments and precast coupling beams are relatively rare, with wet connections being more common. Wet connections require on-site concrete work and cannot maximize the advantages of prefabricated construction. Therefore, developing a dry connection system between precast shear walls and precast coupling beams has become a research hotspot in recent years. In developing dry connection methods for precast coupling beams, it is necessary to consider the characteristics of coupling beams as the first line of defense and main energy-dissipating components in the seismic design of shear wall structures. The rationality of the coupling beam connection design directly affects the seismic performance of the building. Therefore, in seismic design, it is necessary to ensure "strong wall segments, weak coupling beams," ensuring that the bending and shear bearing capacity of the coupling beams does not exceed the limit under seismic loading and meeting the requirement of "strong shear, weak bending." Currently, the invention patent with patent application number CN201711114911.7, entitled "Connection Structure and Prefabrication Assembly Method of Prefabricated Concrete Shear Wall and Coupling Beam", discloses a prefabricated shear wall and coupling beam structure. In this structure, the connection between the coupling beam and the shear wall is a wet connection made by grouting, which affects the prefabrication efficiency. Moreover, its simple beam structure is inconvenient when assembling with the floor slab, which affects the assembly efficiency of prefabricated buildings.

[0004] Therefore, in order to solve the above problems, this application develops a precast coupling beam structure and a dry connection module for constructing the coupling beam structure and precast shear wall to ensure the production efficiency of the precast coupling beam and the assembly efficiency in subsequent construction, which is in line with actual needs. Utility Model Content

[0005] In order to solve the problems of poor manufacturing efficiency of prefabricated connecting beam structures and the inconvenience of assembling them with floor slabs due to their relatively simple beam structure, which affects the assembly efficiency of prefabricated buildings, this utility model provides a prefabricated connecting beam structure and a dry connection module for prefabricated shear walls.

[0006] A prefabricated connecting beam structure includes a supporting steel plate, two prefabricated connecting blocks, and two prefabricated beams. A connecting steel plate is fixed to each end of the supporting steel plate. The two prefabricated beams are arranged parallel to each other on the upper and lower sides of the supporting steel plate, with each beam positioned between the two connecting steel plates. The end of each prefabricated beam is fixedly connected to an adjacent connecting steel plate. The upper and lower sides of the supporting steel plate are fixedly connected to adjacent prefabricated beams. The supporting steel plate and the two prefabricated beams form an intermediate beam under the constraint of the two connecting steel plates. The thickness of the supporting steel plate is less than the thickness of the prefabricated beams, creating inwardly extending splicing grooves on both sides of the intermediate beam. The two prefabricated connecting blocks are symmetrically arranged at both ends of the intermediate beam along the centerline of the prefabricated beam's length direction, and each prefabricated connecting block is detachably connected to a connecting steel plate at one end of the intermediate beam.

[0007] Furthermore, the prefabricated connecting block includes an outer steel plate layer, which is made of multiple pre-cut steel plates joined and welded together. Multiple No. 1 connecting through holes are processed at the edge of the outer steel plate layer, and the interior of the outer steel plate layer is filled with connecting block concrete.

[0008] Furthermore, the precast beam includes a central cross steel, with both ends of the central cross steel fixedly connected to adjacent connecting steel plates. Multiple No. 2 connecting through holes are machined at the edges of the connecting steel plates, and each No. 2 connecting through hole is coaxially corresponding to a No. 1 connecting through hole. A beam concrete layer is poured on the outside of the central cross steel.

[0009] Furthermore, the prefabricated connecting beam structure is a hexagonal beam structure;

[0010] Furthermore, each side of the supporting steel plate is provided with a splicing block that is matched with the precast floor slab. The splicing block is fixedly connected to the supporting steel plate, and multiple No. 3 connecting through holes are evenly distributed on the top of the splicing block.

[0011] Furthermore, the prefabricated connecting beam structure is an octagonal beam structure;

[0012] Furthermore, multiple No. 4 connecting through holes are evenly distributed along the length extension direction of the middle beam on one side of the supporting steel plate, and a welded sleeve that cooperates with the side extension steel bar of the composite plate is inserted into each No. 4 connecting through hole.

[0013] A prefabricated connecting beam structure and a prefabricated shear wall dry connection module are disclosed. The dry connection module includes a prefabricated connecting beam structure and four prefabricated shear wall panels. The four prefabricated shear wall panels are respectively located at the four corners of the prefabricated connecting beam structure. Each prefabricated shear wall panel has a splicing notch corresponding to the connection corner of the prefabricated connecting beam structure. Each prefabricated shear wall panel is spliced ​​with the prefabricated connecting beam structure through the splicing notch. Each prefabricated shear wall panel can be disassembled and connected to the prefabricated connecting beam structure.

[0014] Furthermore, the precast shear wall panel is a reinforced concrete wall panel, which includes a precast steel cage and a high-strength concrete layer. The precast steel cage is pre-set in the high-strength concrete layer as a skeleton to improve the support strength of the high-strength concrete layer.

[0015] Furthermore, a steel pipe concrete slot group is processed at both the upper and lower ends of the precast shear wall panel. Each steel pipe concrete slot group includes multiple steel pipe concrete slots. The multiple steel pipe concrete slots are arranged equidistantly along the width direction of the precast shear wall panel. A steel pipe concrete is inserted into each steel pipe concrete slot. The precast shear wall panel is detachably connected to the longitudinally adjacent shear wall panel through multiple steel pipe concrete. The outer side of the precast shear wall panel is processed with precast block grooves extending longitudinally, and the precast shear wall panel is detachably connected to the transversely adjacent shear wall panel through the precast block grooves.

[0016] The beneficial effects of this application compared to the prior art are:

[0017] This application provides a precast coupling beam structure, which is structurally optimized compared to existing precast coupling beam structures. Firstly, the connection structure in this application adopts a purely dry connection method, ensuring the precast efficiency of the beams. Secondly, the coupling beam structure provided in this application uses embedded connecting blocks, which are fixed to the threaded reinforcing bars extending from the shear wall using bolts, sleeves, or nuts. Compared to traditional external connecting blocks, embedded connecting blocks can better improve the tightness between the wall and the beam. Furthermore, the connection between the connecting blocks and the wall in this application is a beveled fit, giving the connection better mechanical properties and meeting the requirement of "strength..." The technical requirements of "wall limbs and weak coupling beams" are met, while also ensuring that the bending and shear bearing capacity of the coupling beams does not exceed the limit under seismic action, and the requirements of "strong shear and weak bending" are satisfied. Finally, the coupling beam structure in this application has two structural forms when it is constructed, namely a hexagonal coupling beam structure and an octagonal coupling beam structure. The former is used to cooperate with precast floor slabs, and the latter is used to cooperate with composite floor slabs. Furthermore, the beam itself is provided with a splicing groove for easy cooperation with the floor slab. For different floor slabs to be assembled, corbel blocks for cooperation with precast floor slabs or connecting sleeves for cooperation with composite floor slabs can be set in the splicing groove, which greatly improves the assembly stability and assembly efficiency of the coupling beam when it is subsequently assembled with the floor slab structure.

[0018] This application provides a precast coupling beam structure and a precast shear wall dry connection module, which can be prefabricated in the factory and assembled on the construction site. Compared with the traditional cast-in-place concrete coupling beam and shear wall system, it can improve production efficiency, improve the production quality of components, reduce the difficulty of on-site construction for workers, and shorten the construction period. At the same time, this application further optimizes the assembly structure of the shear wall. The left and right connecting parts of the shear wall adopt a plug-in connection structure of precast blocks and gap fit, and the upper and lower connecting parts of the shear wall adopt a square steel pipe or steel pipe concrete structure. This setting helps to improve the shear resistance of the precast shear wall during assembly. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the prefabricated connecting beam described in Specific Embodiment 1 of this application;

[0020] Figure 2 This is a schematic diagram of the main section of the precast connecting beam described in the first specific embodiment of this application;

[0021] Figure 3 This is a structural schematic diagram of the dry connection module between the precast connecting beam and the precast shear wall as described in the second specific embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the main section of the precast wall panel in the structure of the dry connection module between the precast connecting beam and the precast shear wall described in the second specific embodiment of this application;

[0023] Figure 5 This is a schematic diagram showing the arrangement of the precast block slots and steel pipe concrete slots in the dry connection module between the precast connecting beam and the precast shear wall as described in Embodiment 2 of this application.

[0024] Figure 6 This is a schematic diagram showing the state of steel pipe concrete inserted in the dry connection module between the precast connecting beam and the precast shear wall as described in the second specific embodiment of this application.

[0025] Figure 7 This is a structural diagram of the precast connecting beam and precast shear wall dry connection module and precast floor slab assembly as described in the second specific embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the nodes during the assembly of the precast connecting beam and the precast shear wall dry connection module with the precast floor slab as described in the second specific embodiment of this application.

[0027] Figure 9 This is a structural schematic diagram of the prefabricated connecting beam described in the third specific embodiment of this application;

[0028] Figure 10 This is a schematic diagram of the main section of the precast connecting beam described in the third specific embodiment of this application;

[0029] Figure 11 This is a structural schematic diagram of the dry connection module between the precast connecting beam and the precast shear wall as described in the fourth specific embodiment of this application;

[0030] Figure 12 This is a schematic diagram of the main section of the precast wall panel in the structure of the dry connection module between the precast connecting beam and the precast shear wall described in Embodiment 4 of this application.

[0031] Figure 13 This is a schematic diagram showing the arrangement of the precast block slots and steel pipe concrete slots in the dry connection module between the precast connecting beam and the precast shear wall as described in Embodiment 4 of this application.

[0032] Figure 14 This is a schematic diagram of the state in which steel pipe concrete is inserted into the dry connection module between the precast connecting beam and the precast shear wall as described in the fourth specific embodiment of this application.

[0033] Figure 15 This is a structural diagram of the prefabricated connecting beam and prefabricated shear wall dry connection module and composite slab assembly as described in the fourth specific embodiment of this application;

[0034] Figure 16 This is a schematic diagram of the nodes during the assembly of the precast connecting beam and the precast shear wall dry connection module with the composite slab as described in the fourth specific embodiment of this application.

[0035] The diagram shows: 1. Precast connecting block, 1-1 outer steel plate layer of the block, 1-2 connecting block concrete, 2. Precast beam, 2-1 central cross steel, 2-2 beam concrete layer, 3. Supporting steel plate, 4. Assembled block, 5. Welded sleeve, 6. Precast shear wall panel, 61. Precast steel cage, 62. High-strength concrete layer, 63. Precast block groove, 64. Steel pipe concrete slot, 7. Steel pipe concrete, 8. Precast floor slab, and 9. Composite slab. Detailed Implementation

[0036] Specific implementation method one: Combining Figures 1 to 2 This embodiment describes a prefabricated connecting beam structure, which includes a supporting steel plate 3, two prefabricated connecting blocks 1, and two prefabricated beams 2. A connecting steel plate is fixed to each end of the supporting steel plate 3. The two prefabricated beams 2 are arranged parallel to each other on the upper and lower sides of the supporting steel plate 3, with each beam located between the two connecting steel plates. The end of each prefabricated beam 2 is fixedly connected to the adjacent connecting steel plate. The upper and lower sides of the supporting steel plate 3 are fixedly connected to the adjacent prefabricated beams 2. The supporting steel plate 3 and the two prefabricated beams 2 form an intermediate beam under the constraint of the two connecting steel plates. The thickness of the supporting steel plate 3 is less than the thickness of the prefabricated beams 2, creating inwardly extending splicing grooves on both sides of the intermediate beam. The two prefabricated connecting blocks 1 are symmetrically arranged at both ends of the intermediate beam along the centerline of the length direction of the prefabricated beams 2, and each prefabricated connecting block 1 is detachably connected to the connecting steel plate at one end of the intermediate beam.

[0037] The prefabricated connecting block 1 includes a steel plate layer 1-1 on the outer perimeter of the block. The steel plate layer 1-1 on the outer perimeter of the block is made of multiple prefabricated steel plates that have been cut and welded together. Multiple No. 1 connecting through holes are processed at the edge of the steel plate layer 1-1 on the outer perimeter of the block. The interior of the steel plate layer 1-1 on the outer perimeter of the block is filled with connecting block concrete 1-2.

[0038] The precast beam 2 includes a central cross steel 2-1. The two ends of the central cross steel 2-1 are fixedly connected to the adjacent connecting steel plates. Multiple No. 2 connecting through holes are processed at the edge of the connecting steel plates, and each No. 2 connecting through hole is coaxially corresponding to a No. 1 connecting through hole. A beam concrete layer 2-2 is poured on the outside of the central cross steel 2-1.

[0039] The precast connecting beam structure is a hexagonal beam structure;

[0040] On both sides of the supporting steel plate 3, there are splicing blocks 4 that are matched with the precast floor slab 8. The splicing blocks 4 are fixedly connected to the supporting steel plate 3. Multiple No. 3 connecting through holes are evenly distributed on the top of the splicing blocks 4.

[0041] In this embodiment, the longitudinal section of the outer steel plate layer 1-1 in the prefabricated connecting block 1 is pentagonal, and its composition is divided into the following parts: the first part is a vertical steel plate for connecting with the connecting steel plate; the second part is two parallel horizontal steel plates; the third part is two inclined steel plates, with one end of the two inclined steel plates intersecting and splicing together; one end of each inclined steel plate is connected to one end of the vertical steel plate through a horizontal steel plate; the three parts together form a pentagonal frame structure; the fourth part is the baffles on the front and rear sides, which are used to seal the pentagonal frame structure on both sides to form a complete prefabricated connection block 1. The precast connecting block structure is filled with UHPC concrete 1-2 to ensure the internal strength of the precast connecting block 1. The beam concrete layer 2 in the precast beam 2 is also UHPC concrete. The UHPC concrete and the central cross steel 2-1 together ensure the strength of the precast beam 2. When the beam concrete layer 2 is poured, the upper and lower sides of the supporting steel plate 3 extend into the corresponding beam concrete layer 2. After the beam concrete layer 2 is poured and formed, the supporting steel plate 3 is naturally embedded in the two precast beams 2 to ensure the structural stability of the middle beam.

[0042] When the precast connecting beam structure provided in this embodiment is assembled with a shear wall, the upper and lower shear walls on the same side are completely fitted together. This connecting beam structure is suitable for subsequent assembly with the precast floor slab 8. A corbel block 4 that cooperates with the precast floor slab 8 is set at the connection of the two shear walls to position and support the precast floor slab 8. Corbel blocks 4 are also set on the side of the supporting steel plate 3 in the precast connecting beam structure to ensure the stability of the connection between the precast floor slab 8 and the connecting beam. In addition, an inwardly extending splicing groove is also set in the connecting beam. By setting a splicing protrusion on the precast floor slab 8 that cooperates with the splicing groove, the tightness and accuracy of the splicing assembly can be further guaranteed.

[0043] Specific Implementation Method Two: Combining Figures 3 to 8 This embodiment describes a precast connecting beam structure and a precast shear wall dry connection module. The dry connection module includes a precast connecting beam structure and four precast shear wall panels 6. The four precast shear wall panels 6 are respectively located at the four corners of the precast connecting beam structure. Each precast shear wall panel 6 has a splicing notch corresponding to the connection corner of the precast connecting beam structure. Each precast shear wall panel 6 is spliced ​​with the precast connecting beam structure through the splicing notch. Each precast shear wall panel 6 can be detached from the precast connecting beam structure.

[0044] The precast shear wall panel 6 is a reinforced concrete wall panel, which includes a precast steel cage 61 and a high-strength concrete layer 62. The precast steel cage 61 is pre-set in the high-strength concrete layer 62 as a skeleton to improve the support strength of the high-strength concrete layer 62.

[0045] A steel pipe concrete slot group is machined at both the upper and lower ends of the precast shear wall panel 6. Each steel pipe concrete slot group includes multiple steel pipe concrete slots 64, which are arranged equidistantly along the width direction of the precast shear wall panel 6. A steel pipe concrete 7 is inserted into each steel pipe concrete slot 64. The precast shear wall panel 6 is detachably connected to the longitudinally adjacent shear wall panel through the multiple steel pipe concrete 7. The outer side of the precast shear wall panel 6 is machined with a precast block groove 63 extending longitudinally, and the precast shear wall panel 6 is detachably connected to the transversely adjacent shear wall panel through the precast block groove 63. Other components and connection methods are the same as in specific embodiment one.

[0046] This embodiment provides a prefabricated coupling beam structure and a prefabricated shear wall dry connection module, which maximizes the use of prefabricated structures. Both the coupling beam structure and the shear wall are prefabricated in the factory and then assembled together through dry connection to form a structurally stable building module. The dry connection method is mainly used in the module preparation, which greatly improves the production efficiency of the module structure. At the same time, the modules are transported to the construction site and assembled on-site in units of modules, which improves the building construction efficiency on the one hand and meets the necessary structural assembly rate in the building on the other hand.

[0047] In this embodiment, there are two main ways to connect the precast connecting beam structure and the four precast shear wall panels 6. One way is to connect the threaded steel bars protruding from the inside of the precast shear wall panel 6 with the threaded sleeve or nut to the precast connecting block 1. The other way is to process threaded holes at the ends of the steel bars protruding from the inside of the precast shear wall panel 6 and connect the drilled steel bars with bolts to the precast connecting block 1.

[0048] In this embodiment, the precast shear wall panel 6 has precast block grooves 63 processed on its side. The precast block grooves 63 are used to assemble with the precast blocks on the left and right adjacent shear walls to ensure the shear resistance between shear walls. The precast shear wall panel 6 has steel pipe concrete slots 64 processed on its top and bottom. The steel pipe concrete slots 64 are used to insert steel pipe concrete 7. The steel pipe concrete 7 serves as a connecting component to assist in the assembly of the longitudinally arranged shear wall structure, so as to ensure the stability of the shear wall assembly between each layer.

[0049] Specific implementation method three: Combining Figures 9 to 10This embodiment describes a prefabricated connecting beam structure, which includes a supporting steel plate 3, two prefabricated connecting blocks 1, and two prefabricated beams 2. A connecting steel plate is fixed to each end of the supporting steel plate 3. The two prefabricated beams 2 are arranged parallel to each other on the upper and lower sides of the supporting steel plate 3, with each beam located between the two connecting steel plates. The end of each prefabricated beam 2 is fixedly connected to the adjacent connecting steel plate. The upper and lower sides of the supporting steel plate 3 are fixedly connected to the adjacent prefabricated beams 2. The supporting steel plate 3 and the two prefabricated beams 2 form an intermediate beam under the constraint of the two connecting steel plates. The thickness of the supporting steel plate 3 is less than the thickness of the prefabricated beams 2, creating inwardly extending splicing grooves on both sides of the intermediate beam. The two prefabricated connecting blocks 1 are symmetrically arranged at both ends of the intermediate beam along the centerline of the length direction of the prefabricated beams 2, and each prefabricated connecting block 1 is detachably connected to the connecting steel plate at one end of the intermediate beam.

[0050] The prefabricated connecting block 1 includes a steel plate layer 1-1 on the outer perimeter of the block. The steel plate layer 1-1 on the outer perimeter of the block is made of multiple prefabricated steel plates that have been cut and welded together. Multiple No. 1 connecting through holes are processed at the edge of the steel plate layer 1-1 on the outer perimeter of the block. The interior of the steel plate layer 1-1 on the outer perimeter of the block is filled with connecting block concrete 1-2.

[0051] The precast beam 2 includes a central cross steel 2-1. The two ends of the central cross steel 2-1 are fixedly connected to the adjacent connecting steel plates. Multiple No. 2 connecting through holes are processed at the edge of the connecting steel plates, and each No. 2 connecting through hole is coaxially corresponding to a No. 1 connecting through hole. A beam concrete layer 2-2 is poured on the outside of the central cross steel 2-1.

[0052] The precast connecting beam structure is an octagonal beam structure;

[0053] Multiple No. 4 connecting through holes are evenly distributed along the length of the intermediate beam on one side of the supporting steel plate 3. A welded sleeve 5 that cooperates with the side extension steel bars of the composite plate 9 is inserted into each No. 4 connecting through hole.

[0054] In this embodiment, the longitudinal section of the outer steel plate layer 1-1 in the prefabricated connecting block 1 is hexagonal, and its composition is divided into the following parts: the first part is a vertical steel plate for connecting with the connecting steel plate; the second part is two parallel horizontal steel plates; the third part is two inclined steel plates; the fourth part is a short steel plate parallel to the vertical steel plate, with one end of the two inclined steel plates connected to the upper and lower ends of the short steel plate respectively, and the other end of each inclined steel plate connected to one end of the vertical steel plate through a horizontal steel plate. The four parts together form a hexagonal frame structure; the fifth part is the baffles on the front and rear sides, which are used to support the pentagonal frame structure. Both sides are sealed to form a complete precast connecting block structure. The connecting block concrete 1-2 filled in the precast connecting block is UHPC concrete to ensure the internal strength of the precast connecting block 1. The beam concrete layer 2 in the precast beam 2 is also UHPC concrete. The strength of the precast beam 2 is ensured by the cooperation of UHPC concrete and the central cross steel 2-1. When the beam concrete layer 2 is poured, the upper and lower sides of the supporting steel plate 3 extend into the corresponding beam concrete layer 2. After the beam concrete layer 2 is poured and formed, the supporting steel plate 3 is naturally embedded in the two precast beams 2 to ensure the structural stability of the middle beam.

[0055] When the prefabricated connecting beam structure provided in this embodiment is assembled with a shear wall, a gap is provided between the upper and lower shear walls on the same side, and the gap width is consistent with the length of the short steel. The connecting beam structure is suitable for subsequent assembly with the composite slab 9. A sleeve structure that cooperates with the extended steel bars of the composite slab 9 is set at the connection of the two shear walls. When the composite slab 9 is assembled, the extended steel bars on both sides of the connecting beam will enter the sleeve structure and be fixed to the sleeve by welding. At the same time, a sleeve structure is also set in the supporting steel plate 3 in the prefabricated connecting beam structure to ensure the stability of the connection between the composite slab 9 and the connecting beam. In addition, an inwardly extending splicing groove is also set in the connecting beam to further ensure the tightness and accuracy of the splicing assembly.

[0056] Specific implementation method four: Combination Figures 11 to 16 This embodiment describes a precast connecting beam structure and a precast shear wall dry connection module. The dry connection module includes a precast connecting beam structure and four precast shear wall panels 6. The four precast shear wall panels 6 are respectively located at the four corners of the precast connecting beam structure. Each precast shear wall panel 6 has a splicing notch corresponding to the connection corner of the precast connecting beam structure. Each precast shear wall panel 6 is spliced ​​with the precast connecting beam structure through the splicing notch. Each precast shear wall panel 6 can be detached from the precast connecting beam structure.

[0057] The precast shear wall panel 6 is a reinforced concrete wall panel, which includes a precast steel cage 61 and a high-strength concrete layer 62. The precast steel cage 61 is pre-set in the high-strength concrete layer 62 as a skeleton to improve the support strength of the high-strength concrete layer 62.

[0058] A steel pipe concrete slot group is machined at both the upper and lower ends of the precast shear wall panel 6. Each steel pipe concrete slot group includes multiple steel pipe concrete slots 64, which are arranged equidistantly along the width direction of the precast shear wall panel 6. A steel pipe concrete 7 is inserted into each steel pipe concrete slot 64. The precast shear wall panel 6 is detachably connected to the longitudinally adjacent shear wall panel through the multiple steel pipe concrete 7. The outer side of the precast shear wall panel 6 is machined with a precast block groove 63 extending longitudinally, and the precast shear wall panel 6 is detachably connected to the transversely adjacent shear wall panel through the precast block groove 63. Other components and connection methods are the same as in specific embodiment three.

[0059] The precast coupling beam structure and precast shear wall dry connection module provided in this embodiment differ from the dry connection module described in Specific Embodiment 2 only in the precast coupling beam structure used. Other technical effects and features are the same, and will not be described in detail here.

[0060] The present invention has been disclosed above with reference to preferred embodiments, but it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

[0061] Working principle

[0062] The application of a precast coupling beam structure and a precast shear wall dry connection module provided in this application to the assembly process in buildings is as follows:

[0063] Step 1: Fabricate prefabricated connecting block 1; Press the steel plate into a predetermined shape, and assemble and fix multiple steel plates to form the required outer steel plate layer 1-1. At the same time, reserve bolt holes on the outer steel plate layer 1-1 according to the design requirements, and then pour the connecting block concrete 1-2 into the outer steel plate layer 1-1.

[0064] Step 2: Fabrication of the intermediate beam: Arrange the two central cross steels 2-1 and the supporting steel plate 3 between the two connecting steel plates according to the design requirements, and weld the three together. At the same time, build a casting template for the precast beam 2 outside the central cross steels 2-1, and pour the beam concrete layer 2-2 after the template is built. After the beam concrete layer 2-2 has solidified and taken shape, remove the casting template to obtain the intermediate beam.

[0065] Step 3: Place the two prefabricated connecting blocks 1 made in Step 1 at both ends of the middle beam and connect them in a dry connection manner to obtain a prefabricated connecting beam structure;

[0066] Step 4: Construct a precast shear wall. Build a precast steel cage 61 according to the design requirements. After reserving bolt sleeves on the protruding steel bars at the connection between the precast shear wall and the precast connecting beam structure, pour a high-strength concrete layer 62. When pouring the high-strength concrete layer 62, use molds to reserve precast block slots 63 and multiple steel pipe concrete slots 64 at the designed positions.

[0067] Step 5: The four precast shear walls made in Step 4 are set as wall segments at the four corners of the precast coupling beam structure and connected by dry connection to obtain the precast coupling beam structure and the precast shear wall dry connection module.

[0068] Step Six: Transport the precast connecting beam structure and precast shear wall dry connection modules from Step Five to the construction site in batches for assembly. During assembly, first connect each precast shear wall to the adjacent shear walls on the left and right sides through the precast blocks and precast block slots 63. Then connect each precast shear wall to the adjacent shear walls above and below through the steel pipe concrete 7 and steel pipe concrete slots 64. After all the dry connection modules are assembled, start assembling the floor slab structure.

[0069] If the floor slab structure in step six is ​​a precast floor slab 8, then a corresponding corbel block 4 is set at the connection between the precast connecting beam structure and the precast shear wall on the same side, and bolt holes are reserved on the corbel block 4 to facilitate the installation of the precast floor slab 8.

[0070] If the floor slab structure in step six is ​​a composite slab 9, the connection between the composite slab 9 and the shear wall is achieved by arranging connecting sleeves in the gap between the precast shear walls 6 on the same side. The extended reinforcing bars on the side of the composite slab 9 are extended into the connecting sleeves and welded to fix them. At the same time, holes are also made in the connecting beam, and connecting sleeve structures are set in the holes. The reinforcing bars of the composite slab are inserted into the sleeve structures and then welded to connect them.

[0071] The precast coupling beam structure and the dry connection module of the precast coupling beam structure and the precast shear wall provided in this application have a construction efficiency that is 28-34% higher than that of the existing prefabricated coupling beam structure in actual building construction simulation. At the same time, the building system constructed using the connection structure and dry connection module described in this application has maintained a shear deformation of less than 0.3mm in multiple seismic simulation experiments, which meets the seismic requirements.

Claims

1. A prefabricated coupling beam structure, characterized in that: The precast connecting beam structure includes a supporting steel plate (3), two precast connecting blocks (1) and two precast beams (2). A connecting steel plate is fixed to each end of the supporting steel plate (3). The two precast beams (2) are arranged in parallel on the upper and lower sides of the supporting steel plate (3), and both precast beams (2) are located between the two connecting steel plates. The end of each precast beam (2) is fixedly connected to the adjacent connecting steel plate. The upper and lower sides of the supporting steel plate (3) are fixedly connected to the adjacent precast beams (2). The supporting steel plate (3) and the two precast beams (2) form an intermediate beam under the constraint of the two connecting steel plates. The thickness of the supporting steel plate (3) is less than the thickness of the precast beams (2), so that the two sides of the intermediate beam form inwardly extending splicing grooves. The two precast connecting blocks (1) are symmetrically arranged at both ends of the intermediate beam along the center line of the length direction of the precast beams (2), and each precast connecting block (1) is detachably connected to the connecting steel plate at one end of the intermediate beam.

2. The prefabricated connecting beam structure according to claim 1, characterized in that: The prefabricated connecting block (1) includes a steel plate layer (1-1) on the outer perimeter of the block. The steel plate layer (1-1) on the outer perimeter of the block is made of multiple prefabricated steel plates cut and welded together. Multiple No. 1 connecting through holes are processed at the edge of the steel plate layer (1-1) on the outer perimeter of the block. The interior of the steel plate layer (1-1) on the outer perimeter of the block is filled with connecting block concrete (1-2).

3. A prefabricated connecting beam structure according to claim 2, characterized in that: The precast beam (2) includes a central cross steel (2-1). The two ends of the central cross steel (2-1) are fixedly connected to the adjacent connecting steel plates. Multiple No. 2 connecting through holes are processed at the edge of the connecting steel plates, and each No. 2 connecting through hole is coaxially corresponding to a No. 1 connecting through hole. A beam concrete layer (2-2) is poured on the outside of the central cross steel (2-1).

4. A prefabricated connecting beam structure according to claim 3, characterized in that: The precast connecting beam structure is a hexagonal beam structure.

5. A prefabricated connecting beam structure according to claim 4, characterized in that: The supporting steel plate (3) is provided with a splicing block (4) on both sides to cooperate with the precast floor slab (8). The splicing block (4) is fixedly connected to the supporting steel plate (3). Multiple No. 3 connecting through holes are evenly distributed on the top of the splicing block (4).

6. A prefabricated connecting beam structure according to claim 3, characterized in that: The precast connecting beam structure is an octagonal beam structure.

7. A prefabricated connecting beam structure according to claim 6, characterized in that: Multiple No. 4 connecting through holes are evenly distributed along the length extension direction of the middle beam on one side of the supporting steel plate (3). A welded sleeve (5) that cooperates with the side extension steel bar of the composite plate (9) is inserted into each No. 4 connecting through hole.

8. A prefabricated coupling beam structure and a prefabricated shear wall dry connection module constructed from any one of claims 1 to 7, characterized in that: The dry connection module includes a precast connecting beam structure and four precast shear wall panels (6). The four precast shear wall panels (6) are respectively set at the four corners of the precast connecting beam structure. Each precast shear wall panel (6) has a splicing notch corresponding to the connection corner of the precast connecting beam structure. Each precast shear wall panel (6) is spliced ​​with the precast connecting beam structure through the splicing notch. Each precast shear wall panel (6) is disassembled and connected to the precast connecting beam structure.

9. The precast coupling beam structure and precast shear wall dry connection module according to claim 8, characterized in that: The precast shear wall panel (6) is a reinforced concrete wall panel, which includes a precast steel cage (61) and a high-strength concrete layer (62). The precast steel cage (61) is precast as a skeleton in the high-strength concrete layer (62) to improve the support strength of the high-strength concrete layer (62).

10. A prefabricated coupling beam structure and a prefabricated shear wall dry connection module according to claim 9, characterized in that: A steel pipe concrete slot group is processed at the upper and lower ends of the precast shear wall panel (6). Each steel pipe concrete slot group includes multiple steel pipe concrete slots (64). The multiple steel pipe concrete slots (64) are arranged equidistantly along the width direction of the precast shear wall panel (6). A steel pipe concrete (7) is inserted into each steel pipe concrete slot (64). The precast shear wall panel (6) is detachably connected to the longitudinally adjacent shear wall panel through multiple steel pipe concrete (7). The outer side of the precast shear wall panel (6) is processed with a precast block groove (63) extending longitudinally. The precast shear wall panel (6) is detachably connected to the transversely adjacent shear wall panel through the precast block groove (63).

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