A large-opening steel tube bundle concrete shear wall structure and construction technology

Abstract

The present invention relates to a large-hole steel tube bundle concrete shear wall structure and a construction process. The shear wall structure comprises a hollow lattice steel tube bundle connecting beam, a hollow lattice steel tube bundle wall limb and cast-in-place concrete. The hollow lattice steel tube bundle connecting beam and the hollow lattice steel tube bundle wall limb are connected by anchoring or overlapping. The anchoring adopts an internal anchor connector. The internal anchor connector comprises an end plate and a vertical plate. The two vertical plates penetrate the end plate and are fixedly connected to the end plate. The two ends of the two vertical plates are respectively inserted into the hollow lattice steel tube bundle connecting beam and the wall limb. During overlapping, one end of the hollow lattice steel tube bundle wall limb is cut off. The two ends of the hollow lattice steel tube bundle connecting beam are overlapped at the cut-off position of the two hollow lattice steel tube bundle wall limbs and fixed by welding. The two ends of the horizontal steel plate of each layer of the hollow lattice steel tube bundle connecting beam are provided with horizontal steel plate holes within the overlapping range and the inner side of the two ends of each layer is provided with a vertical plate with holes. After pouring concrete on site, a large-hole steel tube bundle concrete shear wall structure is formed. The shear wall structure solves the problem of difficulty in opening holes in the shear wall and affecting the structural stress, and can realize a large span of the building structure, with a reliable connection structure and simple assembly and construction.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering, and in particular relates to a large-opening steel tube bundle concrete shear wall structure and a construction process. Background Art

[0002] Steel tube bundle composite structures can address the problems of poor steel component stability, concrete brittleness, and rapid stiffness degradation, effectively reducing the structure's deadweight and improving its seismic performance. Steel tube bundle composite structures are highly industrialized and can be manufactured on industrial production lines, facilitating rapid installation and construction. Existing steel tube bundle concrete shear wall structures suffer from issues such as inconvenient wall openings, the need to avoid shear walls with long limbs when arranging door and window openings, limited flexibility in door and window placement, complex design and fabrication of opening nodes, and the inherent weakening of wall performance caused by openings.

[0003] With the rapid development of residential and building industrialization, construction is moving towards a green, energy-efficient, low-cost, and high-quality development phase. Although integrated insulation structure construction formwork is the latest development in energy-saving construction technology for prefabricated buildings and exterior walls, it has yet to be widely adopted. In steel tube bundle concrete shear wall structures, the hollow lattice steel tube bundles serve as both the cast-in-place concrete formwork and the structural load-bearing component, making it a new building form more suitable for integrating structural decoration and insulation. This integration of exterior wall insulation and decoration is first integrated with the hollow lattice steel tube bundles in the factory, then installed on-site, and finally connected with cast-in-place concrete. Currently, beam-wall joints in projects use a large number of bolts for fastening, and the joint structure is complex. This results in uneven surfaces within the beam-wall plane at the joint, with protrusions or other redundant components, making construction difficult and hindering the integration of insulation, decoration, and structure.

[0004] Therefore, this application has developed a large-opening steel tube bundle concrete shear wall structure and construction process, which reduces welding by anchoring and overlapping, solves the problem of difficulty in opening holes in shear walls and affecting the structural stress, and can achieve a large span of the building structure, with a reliable connection structure and simple assembly and construction. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a large-opening steel tube bundle concrete shear wall structure and a construction process.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] A large-opening steel tube bundle concrete shear wall structure, characterized in that the shear wall structure comprises hollow lattice steel tube bundle coupling beams, hollow lattice steel tube bundle wall limbs, and cast-in-place concrete; the hollow lattice steel tube bundle coupling beams and the hollow lattice steel tube bundle wall limbs are connected by anchoring or overlapping, and concrete is cast-in-place in the hollow lattice steel tube bundle coupling beams and the hollow lattice steel tube bundle wall limbs, so that the hollow lattice steel tube bundle wall limbs, the hollow lattice steel tube bundle coupling beams, and the concrete are integrally connected to form a large-opening steel tube bundle concrete shear wall;

[0008] The anchoring adopts an internal anchor connector, which includes an end plate and a vertical plate. The two vertical plates penetrate the end plate and are fixedly connected to the end plate. One end of the two vertical plates is inserted into the hollow lattice steel tube bundle connecting beam, and the other end is inserted into the hollow lattice steel tube bundle wall limb. The end plate and the hollow lattice steel tube bundle wall limb are connected by high-strength bolts or tension bolts with embedded inner nuts to achieve beam-wall connection;

[0009] During the overlap, one end of the hollow lattice steel tube bundle wall member is cut off, and the two ends of the hollow lattice steel tube bundle connecting beam are overlapped at the cut-off parts of the two hollow lattice steel tube bundle wall members and welded and fixed, and reinforcing angle steel is welded at the junction of the beam and the wall; both ends of the horizontal steel plate of each layer of the hollow lattice steel tube bundle connecting beam are provided with horizontal steel plate holes within the overlap range, and the inside of both ends of each layer of the hollow lattice steel tube bundle connecting beam is provided with vertical plates with holes, and the vertical plates with holes are aligned with the vertical steel plates of the hollow lattice steel tube bundle wall members.

[0010] Furthermore, the portion of the vertical plate inserted into the hollow lattice steel tube beam is slotted at positions corresponding to the horizontal steel plates of each layer of the hollow lattice steel tube beam, a plurality of bolts are welded on the inner side of the vertical plate, and connecting plates are welded on the upper and lower ends of the two vertical plates, and connecting plate openings are provided on the connecting plates.

[0011] Furthermore, the height of the end plate is greater than the height of the hollow lattice steel tube bundle connecting beam, and end plate bolt holes are respectively provided on the upper and lower parts of the end plate that are higher than the hollow lattice steel tube bundle connecting beam.

[0012] Furthermore, a wall limb slot and a wall limb bolt hole are provided on one side where the hollow lattice steel tube bundle wall limb is connected to the hollow lattice steel tube bundle connecting beam. The wall limb slot matches the size of the vertical plate with studs of the internal anchor connector, and the wall limb bolt hole is used to install high-strength bolts or tension bolts with embedded inner nuts.

[0013] Furthermore, an opening is provided on the top of the hollow lattice steel tube bundle connecting beam, and cover plates are arranged at intervals at the opening.

[0014] Furthermore, the hollow lattice steel tube bundle connecting beam and the hollow lattice steel tube bundle wall are welded together using multiple hollow lattice steel tubes of the same specifications, and two adjacent hollow lattice steel tubes share a perforated steel plate; the cross-section of the hollow lattice steel tube bundle wall can be straight, cross, T, L, Z or C.

[0015] A construction process for a large-opening steel tube bundle concrete shear wall structure, characterized by comprising the following steps:

[0016] Step 1: Slot and open end plate bolt holes on the end plate of the inner anchor connector. The slot matches the height and thickness of the vertical plate, and the end plate bolt holes match the size of the high-strength bolts or the tension bolts of the embedded inner nuts; slots are opened at the portion of the vertical plate of the inner anchor connector where the hollow lattice steel tube bundle connecting beam is inserted and at positions corresponding to the horizontal steel plates of each layer of the hollow lattice steel tube bundle connecting beam. The vertical plate of the inner anchor connector is inserted into the slot of the end plate and welded in place; studs are welded on the inner side of the vertical plate, and connecting plates with connecting plate openings are vertically welded to the upper and lower parts of the two vertical plates at one end where the hollow lattice steel tube bundle connecting beam is inserted, thereby completing the production of the inner anchor connector;

[0017] Step 2: Weld cover plates at intervals at the openings at the top of the hollow lattice steel tube bundle coupling beams, and preferentially weld cover plates at the openings where the inner anchor connectors are inserted into the hollow lattice steel tube bundle coupling beams, thereby completing the fabrication of the hollow lattice steel tube bundle coupling beam formwork; provide wall limb slots and wall limb bolt holes on the side where the hollow lattice steel tube bundle wall limb is connected to the hollow lattice steel tube bundle coupling beam, thereby completing the fabrication of the hollow lattice steel tube bundle wall limb formwork;

[0018] Step 3: Insert the two vertical plates of the inner anchor connector into the hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb respectively, and install the end plates of the inner anchor connector and the hollow lattice steel tube bundle wall limb with high-strength single-sided bolts or tension bolts with pre-embedded inner nuts to achieve a fixed connection between the hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb;

[0019] Step 4: pour concrete into the hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb, so that the hollow lattice steel tube bundle wall limb, the hollow lattice steel tube bundle coupling beam and the cast-in-place concrete are connected as a whole to form a large-opening steel tube bundle concrete shear wall structure.

[0020] A construction process for a large-opening steel tube bundle concrete shear wall structure, characterized by comprising the following steps:

[0021] Step 1: Open horizontal steel plate holes within the overlap range at both ends of the horizontal steel plates of each layer of the hollow lattice steel tube bundle coupling beam. Weld vertical plates with holes inside each end of the hollow lattice steel tube bundle coupling beam. Weld reinforcing angle steel to the bottom layer before welding the vertical plates with holes. Complete the production of the hollow lattice steel tube bundle coupling beam template.

[0022] Step 2: Cut the ends of the hollow lattice steel tube bundle wall members within the height range of the hollow lattice steel tube bundle connecting beam, and weld reinforcing angle steel at the junction of the beam and wall to complete the production of the hollow lattice steel tube bundle wall member formwork;

[0023] Step 3: Overlap the two ends of the hollow lattice steel tube bundle coupling beam at the cutoff points of the two hollow lattice steel tube bundle wall members, and weld and fix them to form a large-opening steel tube bundle concrete shear wall formwork;

[0024] Step 4: pour concrete into the hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb, so that the hollow lattice steel tube bundle wall limb, the hollow lattice steel tube bundle coupling beam and the cast-in-place concrete are connected as a whole to form a large-opening steel tube bundle concrete shear wall.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1) The present invention connects hollow lattice steel tube bundle connecting beams with hollow lattice steel tube bundle wall limbs to form a large-opening steel tube bundle concrete shear wall structure, which solves the problem of difficulty in opening holes in shear walls and affects the stress of the structure. It can realize a large span of the building structure and can flexibly separate and arrange the space according to the building function, which is beneficial to the functional use of the building and has a good architectural effect. No protruding corners of the wall are exposed indoors, and sufficient door and window openings can be provided to facilitate the laying of indoor water, heating and electrical pipes, and the arrangement of doors, windows and rooms. It is more suitable for the construction of floor-to-ceiling windows with good lighting and low construction cost. When a wall under the window is required, it is also convenient to install partition structures such as infill walls. This structure increases the space utilization rate of the room, has a high room rate and improves the aesthetics of the interior space, providing people with a more comfortable living and working environment.

[0027] 2) The hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb utilize hollow lattice steel tube bundles of the same specifications, creating a cavity structure with the same width between the beam and the wall, eliminating the need for dismantling formwork. This also facilitates assembly and connection of the beam-wall joints. The hollow lattice steel tube bundles serve as both load-bearing components and direct formwork, eliminating the need for steel bars or formwork for the entire structure, facilitating rapid construction and reducing construction time.

[0028] 3) Anchor or lap joints with better stress-bearing performance are used to solve the beam-wall connection problem. The steel content of the joints is increased, so that the strength and rigidity of the joints can be guaranteed, and it is beneficial to cast-in-place concrete of walls and beams on site. After pouring concrete, the integrity and safety of the beam-wall node structure can be guaranteed, which is equivalent to a cast-in-place structure, while alleviating the stress concentration phenomenon.

[0029] 4) When anchoring, the bolts connected to the hollow lattice steel tube bundle wall limb should extend beyond a cavity in the hollow lattice steel tube bundle wall limb. The two ends of the two vertical plates are respectively inserted into the hollow lattice steel tube bundle connecting beam and the hollow lattice steel tube bundle wall limb for a distance. Welded studs are distributed on the inside of the vertical plates. A connecting plate is welded at the end of the vertical plate at the end inserted into the connecting beam, and a hole is opened on the connecting plate. These measures strengthen the bonding force between the internal anchor connector and the concrete in the beam and wall, so the node connection does not require welding. It is suitable for longer hollow lattice steel tube bundle connecting beams and large wall limbs. After prefabrication in the factory, the internal anchor connector is used for assembly and connection on site.

[0030] 5) When overlapping, the entire wall limb with a large opening can be prefabricated in the factory. Based on the characteristics of the hollow lattice steel tube bundle wall limb with multiple steel tubes, the perforated vertical plates at both ends of the hollow lattice steel tube bundle coupling beam can make up for the loss of steel after the hollow lattice steel tube bundle wall limb is cut off, and the beam and wall concrete can be integrated during concrete pouring; at the same time, the junction of the hollow lattice steel tube bundle coupling beam and the wall limb is welded with reinforcing angle steel, which can improve the strength and rigidity of the connection node.

[0031] 6) The large-opening steel tube bundle concrete shear wall structure features a smooth surface within the beam and wall plane, without any protrusions or redundant components. This facilitates the formation of a prefabricated dual-cavity insulation and structurally integrated cavity wall system that requires no disassembly. This significantly improves industrialization and enables green construction in prefabricated buildings. Furthermore, since no concrete is poured during factory prefabrication, the components are lightweight and simple to assemble during transportation and hoisting, improving construction speed and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the beam-wall anchoring process of the present invention;

[0033] Figure 2 This is a schematic diagram of the beam-wall anchoring assembly of the present invention after completion;

[0034] Figure 3 is a schematic diagram of the inner anchor connector of the present invention;

[0035] Figure 4 This is a schematic diagram of the end plate of the inner anchor connector of the present invention;

[0036] Figure 5 Schematic diagram of the vertical plate of the inner anchor connector of the present invention.

[0037] Figure 6 This is a schematic diagram of the beam-wall overlap of the present invention.

[0038] Figure 7 This is the structural diagram of the hollow lattice steel tube beam when the beam and wall are overlapped.

[0039] Figure 8This is a schematic diagram of the beam-wall assembly after completion of the present invention;

[0040] Among them, 1. Hollow lattice steel tube bundle connecting beam; 2. Hollow lattice steel tube bundle wall limb; 3. Internal anchor connector; 4. High-strength bolts; 5. End plate; 6. Vertical plate; 7. Studs; 8. Connecting plate; 9. Connecting plate opening; 10. End plate bolt hole; 11. Cover plate; 12. Wall limb slot; 13. Wall limb bolt hole; 14. Vertical plate with hole; 15. Reinforced angle steel; 16. Horizontal steel plate hole. DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention are given below. The specific embodiments are only used to further illustrate the present invention and do not limit the scope of protection of the claims of this application.

[0042] Example 1

[0043] See also Figures 1 to 5 In this embodiment, a large-opening steel tube bundle concrete shear wall structure includes a hollow lattice steel tube bundle coupling beam 1, a hollow lattice steel tube bundle wall limb 2, an internal anchor connector 3, and cast-in-place concrete; the hollow lattice steel tube bundle coupling beam 1 is anchored to the hollow lattice steel tube bundle wall limb 2 through the internal anchor connector 3, and in-place concrete is cast in the hollow lattice steel tube bundle coupling beam 1 and the hollow lattice steel tube bundle wall limb 2, so that the hollow lattice steel tube bundle wall limb 2, the hollow lattice steel tube bundle coupling beam 1, and the cast-in-place concrete are connected as a whole to form a large-opening steel tube bundle concrete shear wall.

[0044] The inner anchor connector 3 includes an end plate 5 and a vertical plate 6. The two vertical plates 6 pass through the end plate 5 and are fixedly connected to the end plate 5. One end of the vertical plate 6 is inserted into the hollow lattice steel tube bundle connecting beam 1, and the other end is inserted into the hollow lattice steel tube bundle wall limb 2. The parts of the two vertical plates 6 inserted into the hollow lattice steel tube bundle connecting beam 1 are slotted at positions corresponding to the horizontal steel plates of each layer of the hollow lattice steel tube bundle connecting beam 1 to ensure that the inner anchor connector 3 can be inserted into the hollow lattice steel tube bundle connecting beam 1. Connecting plates 8 are welded on the upper and lower parts of the ends of the vertical plates 6. Connecting plate openings 9 are provided on the connecting plates 8, and multiple bolts 7 are welded on the inner side of the vertical plates 6. Cast on site During the concrete pouring process, cast-in-place concrete passes through the openings 9 of the connection plate, connecting the hollow lattice steel tube bundle coupling beam 1 and the inner anchor connector 3 as a whole. The height of the end plate 5 is greater than that of the hollow lattice steel tube bundle coupling beam 1. The upper and lower portions of the end plate 5, which are higher than the hollow lattice steel tube bundle coupling beam 1, are provided with end plate bolt holes 10 for installing high-strength bolts 4 or tension bolts with pre-embedded inner nuts, thereby achieving a fixed connection between the inner anchor connector 3 and the hollow lattice steel tube bundle wall limb 2. A plurality of studs 7 are welded to the inner side of the vertical plate 6. During the on-site concrete pouring process, the cast-in-place concrete, the hollow lattice steel tube bundle wall limb 2, and the inner anchor connector 3 are connected as a whole. The vertical plate 6 of the inner anchor connector 3 matches the height of the inner cavity of the hollow lattice steel tube bundle coupling beam 1, allowing the vertical plate 6 to be inserted into the inner cavity of the hollow lattice steel tube bundle coupling beam 1. The vertical plate 6, the length and arrangement of the studs 7, and the openings of the connection plate 8 facilitate the pouring of concrete within the beam wall.

[0045] A wall slot 12 and a wall bolt hole 13 are provided on one side where the hollow lattice steel tube bundle wall 2 is connected to the hollow lattice steel tube bundle connecting beam 1. The wall slot 12 matches the size of the vertical plate 6 with the stud 7 of the internal anchor connector 3. The wall bolt hole 13 is used to install high-strength bolts 4 or tension bolts with embedded inner nuts.

[0046] The hollow lattice steel tube bundle connecting beam 1 and the hollow lattice steel tube bundle wall 2 are welded by multiple hollow lattice steel tubes of the same specifications. Two adjacent hollow lattice steel tubes share a perforated steel plate. An opening is provided at the top of the hollow lattice steel tube bundle connecting beam 1, and cover plates 11 are arranged at intervals at the opening to ensure the connection between the upper hollow lattice steel tubes of the longer hollow lattice steel tube bundle connecting beam 1 and the cast-in-place concrete; the cross-section of the hollow lattice steel tube bundle wall 2 can be straight, cross, T, L, Z or C.

[0047] A construction process of a large-opening steel tube bundle concrete shear wall structure in this embodiment includes the following steps:

[0048] Step 1: Slot and open a hole on the end plate 5 of the inner anchor connector 3. The slot matches the height and thickness of the vertical plate 6, and the hole matches the size of the tension bolt of the high-strength bolt 4 or the embedded inner nut; slit one end of the vertical plate 6 of the inner anchor connector 3, and the slit size matches the thickness of the horizontal steel plate of the hollow lattice steel tube bundle connecting beam 1. The vertical plate 6 of the inner anchor connector 3 is inserted into the slot of the end plate 5 and welded to fix; then, studs 7 are welded on the inside of the vertical plate 6, and the two vertical plates 6 are vertically welded with a connecting plate 8 with a connecting plate opening 9 on the upper and lower parts of one end inserted into the hollow lattice steel tube bundle connecting beam 1, completing the production of the inner anchor connector 3;

[0049] Step 2: horizontally weld multiple hollow lattice steel tubes to form a hollow lattice steel tube bundle coupling beam 1, weld cover plates 11 at intervals at the openings at the tops of the hollow lattice steel tube bundle coupling beam 1, and preferentially weld the cover plates 11 at the openings where the inner anchor connector 3 is inserted into the hollow lattice steel tube bundle coupling beam 1, thereby completing the production of the template for the hollow lattice steel tube bundle coupling beam 1; vertically weld multiple hollow lattice steel tubes to form a hollow lattice steel tube bundle wall limb 2, and provide a wall limb slot 12 and a wall limb bolt hole 13 on the side of the hollow lattice steel tube bundle wall limb 2 connected to the hollow lattice steel tube bundle coupling beam 1, thereby completing the production of the template for the hollow lattice steel tube bundle wall limb 2;

[0050] Step 3: Insert the two vertical plates 6 of the inner anchor connector 3 into the hollow lattice steel tube bundle coupling beam 1 and the hollow lattice steel tube bundle wall limb 2 respectively, and install the end plates 5 of the inner anchor connector 3 and the hollow lattice steel tube bundle wall limb 2 with high-strength single-sided bolts 4 or tension bolts with pre-embedded inner nuts to achieve a fixed connection between the hollow lattice steel tube bundle coupling beam 1 and the hollow lattice steel tube bundle wall limb 2, completing the assembly of the large-opening steel tube bundle concrete shear wall formwork;

[0051] Step 4: pour concrete into the hollow lattice steel tube bundle coupling beam 1 and the hollow lattice steel tube bundle wall limb 2 to connect the hollow lattice steel tube bundle wall limb 2, the hollow lattice steel tube bundle coupling beam 1 and the cast-in-place concrete into a whole to form a large-opening steel tube bundle concrete shear wall structure.

[0052] Example 2

[0053] See also Figures 6-8 In this embodiment, a large-opening steel tube bundle concrete shear wall structure includes a hollow lattice steel tube bundle coupling beam 1, a hollow lattice steel tube bundle wall limb 2 and cast-in-place concrete; the hollow lattice steel tube bundle coupling beam 1 and the hollow lattice steel tube bundle wall limb 2 are connected by overlapping, that is, the two ends of the hollow lattice steel tube bundle coupling beam 1 are overlapped at the ends of the two hollow lattice steel tube bundle wall limbs 2 and welded to fix, and concrete is cast-in-place in the hollow lattice steel tube bundle coupling beam 1 and the hollow lattice steel tube bundle wall limb 2, so that the hollow lattice steel tube bundle wall limb 2, the hollow lattice steel tube bundle coupling beam 1 and the cast-in-place concrete are connected as a whole to form a large-opening steel tube bundle concrete shear wall structure.

[0054] One or more hollow lattice steel tubes at one end of the hollow lattice steel tube bundle wall limb 2 are cut off within the height range of the hollow lattice steel tube bundle connecting beam 1, and the two ends of the hollow lattice steel tube bundle connecting beam 1 are overlapped at the cut-off parts of the two hollow lattice steel tube bundle wall limbs 2 and welded and fixed; both ends of the horizontal steel plate of each layer of the hollow lattice steel tube bundle connecting beam 1 are provided with horizontal steel plate holes 16 that pass through from top to bottom within the overlap range, and the inner sides of both ends of each layer of the hollow lattice steel tube bundle connecting beam 1 are welded with vertical plates 14 with holes, and the vertical plates 14 with holes are connected to the hollow lattice steel tube bundle connecting beam 1. The vertical steel plates of the hollow lattice steel tube bundle wall 2 are aligned. The vertical plates 14 with holes are used for cast-in-place concrete to pass through to connect the hollow lattice steel tube bundle connecting beam 1 and the hollow lattice steel tube bundle wall 2 as a whole. On the other hand, it makes up for the reduced steel consumption due to the truncation of the hollow lattice steel tube bundle wall 2, thereby ensuring the overall strength and rigidity. The inner and outer sides of the hollow lattice steel tube bundle of the bottom layer of the hollow lattice steel tube bundle connecting beam 1 are respectively welded with reinforcing angle steels 15, and the reinforcing angle steels 15 are located at the junction of the beam and the wall to relieve stress concentration.

[0055] The hollow lattice steel tube bundle connecting beam 1 and the hollow lattice steel tube bundle wall 2 are respectively welded by multiple hollow lattice steel tubes of the same specifications. Two adjacent hollow lattice steel tubes share a perforated steel plate. An opening is set at the top of the hollow lattice steel tube bundle connecting beam 1; the cross-section of the hollow lattice steel tube bundle wall 2 can be straight, cross, T, L, Z or C.

[0056] A construction process of a large-opening steel tube bundle concrete shear wall structure in this embodiment includes the following steps:

[0057] Step 1: Horizontal steel plate holes 16 are opened at both ends of the horizontal steel plates of each layer of the hollow lattice steel tube bundle coupling beam 1 within the overlap range. Perforated vertical plates 14 are welded to the interior of both ends of each layer of the hollow lattice steel tube bundle coupling beam 1. Reinforcement angle steel 15 is welded to the bottom layer before welding the perforated vertical plates 14. This completes the production of the hollow lattice steel tube bundle coupling beam template.

[0058] Step 2: One or more lattice steel tubes at the end of the hollow lattice steel tube bundle wall limb 2 are cut within the height range of the hollow lattice steel tube bundle coupling beam 1, and a reinforcing angle steel 15 is welded at the junction of the beam and the wall to complete the production of the formwork of the hollow lattice steel tube bundle wall limb 2;

[0059] Step 3: overlap the two ends of the hollow lattice steel tube bundle coupling beam 1 at the cut-off points of the two hollow lattice steel tube bundle wall members 2, and weld and fix them to form a large-opening steel tube bundle concrete shear wall formwork;

[0060] Step 4: pour concrete into the hollow lattice steel tube bundle coupling beam 1 and the hollow lattice steel tube bundle wall limb 2 to connect the hollow lattice steel tube bundle wall limb 2, the hollow lattice steel tube bundle coupling beam 1 and the cast-in-place concrete as a whole to form a large-opening steel tube bundle concrete shear wall.

[0061] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A large-opening steel tube bundle concrete shear wall structure, characterized in that: The shear wall structure includes a hollow lattice steel tube bundle coupling beam, a hollow lattice steel tube bundle wall limb, and cast-in-place concrete. The hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb are connected by anchoring, and concrete is cast-in-place in the hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb, so that the hollow lattice steel tube bundle wall limb, the hollow lattice steel tube bundle coupling beam, and the cast-in-place concrete are connected as a whole to form a large-opening steel tube bundle concrete shear wall structure. The anchoring adopts an internal anchor connector, which includes an end plate and a vertical plate. The two vertical plates pass through the end plate and are fixedly connected to the end plate. One end of the two vertical plates is inserted into the hollow lattice steel tube bundle connecting beam, and the other end is inserted into the hollow lattice steel tube bundle wall limb. The end plate and the hollow lattice steel tube bundle wall limb are connected by tension bolts with high-strength bolts or embedded internal nuts to realize the beam-wall connection; the upper and lower parts of the ends of the two vertical plates inserted into the hollow lattice steel tube bundle connecting beam are welded with connecting plates, the connecting plates are provided with connecting plate openings, and a plurality of bolts are welded on the inner side of the vertical plates.

2. The large-opening steel tube bundle concrete shear wall structure according to claim 1 is characterized in that: The portion of the vertical plate inserted into the hollow lattice steel tube bundle coupling beam and the position corresponding to the horizontal steel plates of each layer of the hollow lattice steel tube bundle coupling beam are slotted.

3. The large-opening steel tube bundle concrete shear wall structure according to claim 1 is characterized in that: The height of the end plate is greater than that of the hollow lattice steel tube bundle connecting beam, and end plate bolt holes are respectively provided on the upper and lower parts of the end plate that are higher than the hollow lattice steel tube bundle connecting beam.

4. The large-opening steel tube bundle concrete shear wall structure according to claim 3 is characterized in that: A wall limb slot and a wall limb bolt hole are provided on one side where the hollow lattice steel tube bundle wall limb is connected to the hollow lattice steel tube bundle connecting beam. The wall limb slot matches the size of the vertical plate with studs of the internal anchor connector. The wall limb bolt hole is used to install high-strength bolts or tension bolts with embedded inner nuts.

5. The large-opening steel tube bundle concrete shear wall structure according to claim 1 is characterized in that: An opening is provided on the top of the hollow lattice steel tube bundle connecting beam, and cover plates are arranged at intervals at the opening.

6. The large-opening steel tube bundle concrete shear wall structure according to claim 1, characterized in that: The hollow lattice steel tube bundle connecting beam and the hollow lattice steel tube bundle wall are welded by multiple hollow lattice steel tubes of the same specifications, and two adjacent hollow lattice steel tubes share a perforated steel plate; the cross-section of the hollow lattice steel tube bundle wall is straight, cross, T, L, Z or C.

7. A construction process for a large-opening steel tube bundle concrete shear wall structure according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Slot and open end plate bolt holes on the end plate of the inner anchor connector. The slot matches the height and thickness of the vertical plate, and the end plate bolt holes match the size of the high-strength bolts or the tension bolts of the embedded inner nuts; slots are opened at the portion of the vertical plate of the inner anchor connector where the hollow lattice steel tube bundle connecting beam is inserted and at positions corresponding to the horizontal steel plates of each layer of the hollow lattice steel tube bundle connecting beam. The vertical plate of the inner anchor connector is inserted into the slot of the end plate and welded fixed; studs are welded on the inner side of the vertical plate, and connecting plates with connecting plate openings are vertically welded to the upper and lower parts of the two vertical plates at one end where the hollow lattice steel tube bundle connecting beam is inserted, thereby completing the production of the inner anchor connector; Step 2: Weld cover plates at intervals at the openings at the top of the hollow lattice steel tube bundle coupling beam, and preferentially weld cover plates at the openings where the inner anchor connector is inserted into the hollow lattice steel tube bundle coupling beam, thereby completing the fabrication of the hollow lattice steel tube bundle coupling beam formwork; provide wall limb slots and wall limb bolt holes on the side where the hollow lattice steel tube bundle wall limb is connected to the hollow lattice steel tube bundle coupling beam, thereby completing the fabrication of the hollow lattice steel tube bundle wall limb formwork; Step 3: Insert the two vertical plates of the inner anchor connector into the hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb respectively, and install the end plates of the inner anchor connector and the hollow lattice steel tube bundle wall limb with high-strength bolts or tension bolts with pre-embedded inner nuts to achieve a fixed connection between the hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb; Step 4: Cast in-situ concrete in the hollow lattice steel tube bundle coupling beam and the hollow lattice steel tube bundle wall limb to connect the hollow lattice steel tube bundle wall limb, the hollow lattice steel tube bundle coupling beam and the cast-in-situ concrete into a whole, thereby forming a large-opening steel tube bundle concrete shear wall structure.

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