A steel plate shear wall with high shear resistance, connection nodes and construction method

Abstract

This invention discloses a high-shear-strength steel plate shear wall, its connection nodes, and a construction method. The high-shear-strength steel plate shear wall includes a square shear wall body with cavities for pouring filler. Inner reinforcing plates are welded to the inner sides of the four corners of the cavity. Shear-resistant upper connectors are welded to the two top corners of the shear wall body, and lower connectors are welded to the two bottom corners. Each shear-resistant upper connector includes an upwardly extending upper connecting plate and a downwardly extending lower connecting plate. The lower connecting plate of the upper shear wall body is welded to the upper connecting plate of the lower shear wall body. This high-shear-strength steel plate shear wall is not only easy to construct and has good tensile and shear resistance, but also reduces the amount of steel used, which is beneficial for the industrialization and promotion of steel plate shear walls.

Description

Technical Field

[0001] This invention belongs to the field of building component technology, and in particular relates to a steel plate shear wall with high shear resistance, connection nodes and construction method. Background Technology

[0002] Concrete and steel are commonly used materials in engineering structural construction. With the continuous development of building engineering technology, steel-concrete composite structures have been proposed, offering advantages such as reducing structural self-weight, mitigating seismic forces, reducing cross-sectional dimensions, increasing usable space, saving formwork and template work, and shortening construction cycles. Among these, steel plate composite shear walls effectively combine steel and concrete to form a new type of load-bearing component. This design leverages the material properties of steel (lightweight and high strength) and concrete (high stiffness), and features flexible layout, high industrialization, and rapid construction.

[0003] With the continuous development of steel structure technology, the industry has put forward higher requirements for the load-bearing components of steel plate composite structures. In order to ensure the tensile and shear resistance of steel plate shear walls, the conventional approach is to increase the thickness of the steel plates, which increases the amount of steel used in steel plate shear walls and increases construction costs.

[0004] Therefore, how to reduce steel consumption and lower construction costs while ensuring the tensile and shear strength of steel plate shear walls has become an urgent problem for technical personnel in this industry. Summary of the Invention

[0005] The purpose of this invention is to provide a steel plate shear wall with high shear resistance, a connection node, and a construction method to solve the problem of poor shear resistance in existing steel plate shear walls.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A high shear-strength steel plate shear wall, comprising,

[0008] The shear wall is a square structure with cavities for pouring filler. Reinforcing plates are welded to the inner sides of each of the four corners of the cavity.

[0009] Two shear-resistant upper connectors are welded and fixed to the two upper corners of the shear wall, respectively.

[0010] Two lower connectors are respectively fixedly welded to the two lower corners of the shear wall.

[0011] The shear-resistant upper connector includes an upper connecting plate extending vertically upward, and the lower connector includes a lower connecting plate extending vertically downward. The lower connecting plate of the upper shear wall is welded and fixed to the upper connecting plate of the lower shear wall.

[0012] Furthermore, the height of the upper connecting plate is less than that of the lower connecting plate. After the shear wall of the upper layer is assembled on the shear wall of the lower layer, there is a pouring space for pouring concrete between the two, so that the shear walls of the upper and lower layers and the floor slab are poured into one body, improving the shear resistance of the steel plate shear wall.

[0013] Preferably, several upwardly extending upper strengthening connectors are spaced between the two shear upper connectors at the top end of the shear wall, and several downwardly extending lower strengthening connectors are spaced between the two lower connectors at the bottom end. After the shear walls of the upper and lower layers are assembled and poured, the upper strengthening connectors and the lower strengthening connectors are located in the concrete poured for the two-layer shear walls. The upper strengthening connectors and the lower strengthening connectors can not only strengthen the shear walls, but more importantly, they can integrate the upper shear wall, the lower shear wall and the floor slab into a whole after pouring concrete, making the overall structure more reliable and having good shear resistance.

[0014] Preferably, both the upper strengthening connectors and the lower strengthening connectors adopt any one or a combination of two of the "U"-shaped anchor hoops or "mouth"-shaped anchor hoops.

[0015] Furthermore, concrete is pre-poured in the cavity before leaving the factory. At the top end of the shear wall, an upper sealing plate for closing the upper end of the cavity is fixed between the two shear upper connectors. The upper sealing plate is welded and fixed to the steel plate and the inner lining reinforcement plate of the shear wall. The upper sealing plate can not only play a role in strengthening and shear resistance, but also can be used as a beam of the floor slab because it is in the floor slab position.

[0016] Furthermore, the two corners of the shear wall at the top end have square gaps. The shear upper connectors are welded and fixed at the corresponding gaps. The shear upper connectors include upper wing plates and lower wing plates arranged in parallel at intervals. The upper connecting plate is welded and fixed vertically upward on the end face of the upper wing plate. A support connecting plate is arranged between the upper wing plate and the lower wing plate. The upper wing plate, the lower wing plate and the support connecting plate are welded and fixed to the steel plate and the inner lining reinforcement plate of the shear wall. A web is arranged outside the support connecting plate between the upper wing plate and the lower wing plate. A plurality of connecting holes are formed in the web. The shear wall is connected to the imitation wall column through the upper wing plate and the web.

[0017] Furthermore, the lower connector includes an upper top plate. The two side edges of the upper top plate are welded and fixed to the two inner lining reinforcement plates on the inner side of the cavity. The lower connecting plate is welded and fixed vertically downward on the bottom surface of the upper top plate.

[0018] Furthermore, the lower connecting plate of the upper shear wall is welded tightly to the side of the upper connecting plate of the lower shear wall, and a repair plate is welded and fixed on the other side of the lower connecting plate of the upper shear wall. The bottom end of the repair plate is welded and fixed to the shear-resistant upper connecting head of the lower shear wall.

[0019] A connection node for a high shear resistance steel plate shear wall includes two high shear resistance steel plate shear walls and a simulated wall column assembled along the height direction. Hidden reinforcement members and connecting brackets are fixed at intervals on the simulated wall column at positions on the floor slab. A support plate is welded and fixed to the outside of the simulated wall column corresponding to the position of the hidden reinforcement member. The connecting bracket is located below the hidden reinforcement member. The shear wall body of the upper steel plate shear wall is fixedly connected to the support plate, hidden reinforcement member, and connecting bracket via a shear-resistant upper connector. Furthermore, the shear wall body of the upper steel plate shear wall is welded and fixed to the upper connecting plate of the shear wall body of the lower steel plate shear wall via a lower connecting plate.

[0020] Furthermore, the shear-resistant upper connector is welded and fixed to the support plate and the concealed reinforcement through the upper wing plate. The connecting bracket has several connecting holes that cooperate with the web plate. The fixing bolts pass through the connecting holes of the web plate and the connecting bracket to fix the shear-resistant upper connector to the connecting bracket.

[0021] A construction method for a steel plate shear wall with high shear resistance includes the following steps:

[0022] The shear wall located on the lower level is connected to the connecting brackets of the imitation wall columns on both sides through two shear-resistant upper connectors at the top.

[0023] Precast floor slabs are poured, and during the pouring process, formwork is laid around the shear joints to create a non-poured area around the shear joints that facilitates subsequent welding.

[0024] The upper shear wall is hoisted onto the lower shear wall. The lower connecting plate of the upper shear wall is welded and fixed tightly against one side of the upper connecting plate of the lower shear wall. The upper flange is then welded to the support plate and concealed reinforcement of the simulated wall column.

[0025] The secondary pouring of the floor slab involves pouring a second layer of concrete around the pouring space between the upper and lower shear walls and around the shear-resistant upper connection joints, so that the upper shear wall, the lower shear wall, and the floor slab are poured as a whole.

[0026] Furthermore, the filling material in the upper and lower shear walls can be either cast in place or prefabricated in a factory.

[0027] The beneficial effects of this invention are that the high shear-strength steel plate shear wall is connected by specially designed shear-resistant upper and lower connectors, and the upper and lower shear walls and floor slabs are cast as a single unit. Compared with the prior art, it not only facilitates construction and has good tensile and shear resistance, but also reduces the amount of steel used in the steel plate shear wall, which is conducive to the industrialization and promotion of steel plate shear walls. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the high shear resistance steel plate shear wall provided in Embodiment 1 of the present invention;

[0029] Figure 2 This is a side view of the high shear resistance steel plate shear wall provided in Embodiment 1 of the present invention;

[0030] Figure 3 This is a front view schematic diagram of the shear-resistant upper connector of the high shear-resistant steel plate shear wall provided in Embodiment 1 of the present invention;

[0031] Figure 4 This is a side view schematic diagram of the shear-resistant upper connector of the high shear resistance steel plate shear wall provided in Embodiment 1 of the present invention;

[0032] Figure 5 This is a front view schematic diagram of the lower connector of the high shear resistance steel plate shear wall provided in Embodiment 1 of the present invention;

[0033] Figure 6 This is a side view of the lower connector of the high shear resistance steel plate shear wall provided in Embodiment 1 of the present invention;

[0034] Figure 7 This is an assembly diagram of the high shear resistance steel plate shear wall provided in Embodiment 1 of the present invention;

[0035] Figure 8 This is another assembly diagram of the high shear resistance steel plate shear wall provided in Embodiment 1 of the present invention;

[0036] Figure 9 yes Figure 7 A magnified view of a section at point A in the middle;

[0037] Figure 10 yes Figure 8 A magnified view of a section at point B in the middle;

[0038] Figure 11 This is a schematic diagram of the high shear resistance steel plate shear wall provided in Embodiment 2 of the present invention;

[0039] Figure 12 This is a side view schematic diagram of a steel plate shear wall with high shear resistance provided in Embodiment 2 of the present invention;

[0040] Figure 13yes Figure 11 A magnified view of a section at point C. Detailed Implementation

[0041] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] Example 1

[0044] Please see Figures 1 to 6 As shown, in this embodiment, a high shear-strength steel plate shear wall includes a square shear wall body 1. The shear wall body 1 has a cavity for pouring filling material. The upper and lower ends of the cavity are open structures. Several mortise and tenon holes 2 are correspondingly located on the wall surface of the shear wall body 1. Mortise and tenon stakes are inserted into the mortise and tenon holes 2. Inner reinforcing plates 3 are welded and fixed to the inner sides of the four corners of the cavity. The two top corners of the shear wall body 1 have square notches. Shear-resistant upper connectors 4 are welded and fixed to the corresponding notches, and the shear-resistant upper connectors... The joint 4 includes an upper flange 40 and a lower flange 41 arranged in parallel and spaced apart. An upper connecting plate 42 is vertically welded and fixed to the end face of the upper flange 41. A supporting connecting plate 43 is provided between the upper flange 40 and the lower flange 41. The upper flange 40, the lower flange 41 and the supporting connecting plate 43 are welded and fixed to the steel plate and the inner lining reinforcement plate 3 of the shear wall 1. A web plate 44 is provided on the outer side of the supporting connecting plate 43 between the upper flange 40 and the lower flange 41. Several connecting holes 45 are provided on the web plate 44.

[0045] The shear wall 1 has two lower connectors 5 welded and fixed at its bottom corners. The lower connectors 5 include an upper top plate 50. The two sides of the upper top plate 50 are welded and fixed to two inner reinforcing plates 3 inside the cavity. The lower connector 51 is welded and fixed vertically downward to the bottom surface of the upper top plate 50. The height of the upper connector 42 is less than the height of the lower connector 51, so that after the upper shear wall 1 is assembled onto the lower shear wall 1, there is a pouring space 12 between the two for pouring concrete. The upper and lower shear walls are poured into the floor slab as one unit, which improves the shear resistance of the steel plate shear wall.

[0046] At the top of the shear wall 1, between the two shear-resistant upper connectors 4, there are several upward-extending upper "U"-shaped anchors 6a, and at the bottom, between the two lower connectors 5, there are several downward-extending lower "U"-shaped anchors 6b. Both ends of the upper "U"-shaped anchors 6a and the lower "U"-shaped anchors 6b are inserted into the shear wall 1 and welded to the inner wall of the steel plate for fixation.

[0047] Please see Figures 7 to 10 As shown, the connection node between the high shear resistance steel plate shear wall and the imitation wall column includes an upper steel plate shear wall 7a, a lower steel plate shear wall 7b, and imitation wall columns 8 located on both sides. Hidden reinforcement members 80 and connecting brackets 81 are fixed at intervals on the imitation wall column 8 at the position of the floor slab. A support plate 82 is welded and fixed to the outside of the imitation wall column 8 at the position corresponding to the hidden reinforcement member 80. The connecting bracket 81 is located below the hidden reinforcement member 80. During assembly, the lower steel plate shear wall 7b is fixedly connected to the support plate 82, the hidden reinforcement member 80, and the connecting bracket 81 through two shear resistance upper connectors 4 at the top. The specific connection structure is as follows: the shear resistance upper connector 4 is welded and fixed to the support plate 82 and the hidden reinforcement member 80 through the upper flange 40. Several connecting holes 45 are also opened on the connecting bracket 81 to match the web plate 44. The fixing bolt passes through the connecting holes of the web plate 44 and the connecting bracket 81 to fix the shear resistance upper connector 4 to the connecting bracket 81.

[0048] The upper steel plate shear wall 7a is welded and fixed to the upper connecting plate 42 of the lower steel plate shear wall 7b via the lower connecting plate 51. The specific welding method is as follows: the lower connecting plate 51 of the upper steel plate shear wall 7a is welded tightly to the side of the upper connecting plate 42 of the lower steel plate shear wall 7b, and a repair welding plate 9 is welded and fixed on the other side of the lower connecting plate 51 of the upper steel plate shear wall 7a. The bottom end of the repair welding plate 9 is welded and fixed to the shear-resistant upper connecting head 4 of the lower steel plate shear wall 7b.

[0049] The construction method for the above-mentioned high shear resistance steel plate shear wall includes the following steps:

[0050] The lower steel plate shear wall 7b located on the lower layer is connected to the connecting brackets 81 of the imitation wall columns 8 on both sides through the two shear-resistant upper connectors 4 at the top, and concrete is poured into the lower steel plate shear wall 7b.

[0051] During the pre-cast floor slab pouring process, formwork is laid around the shear-resistant connector 4 to create a non-cast area around the shear-resistant connector 4 that facilitates subsequent welding.

[0052] The upper steel plate shear wall 7a is hoisted onto the lower steel plate shear wall 7b. The lower connecting plate 51 of the upper steel plate shear wall 7a is welded tightly to the side of the upper connecting plate 42 of the lower steel plate shear wall 7b. Then, the repair plate 9 is welded. Finally, the upper wing plate 40 is welded to the support plate 82 and the hidden reinforcement 80 of the imitation wall column 8.

[0053] Concrete is poured into the upper steel plate shear wall 7a, with the concrete leaking out from the bottom of the upper steel plate shear wall 7a. If necessary, secondary pouring is carried out in the pouring space between the upper steel plate shear wall 7a and the lower steel plate shear wall 7b, as well as around the shear-resistant upper connector 4, to integrate the upper steel plate shear wall 7a and the lower steel plate shear wall 7b with the floor slab, thereby improving the shear resistance of the steel plate shear wall. After pouring, the upper "U"-shaped anchor 6a and the lower "U"-shaped anchor 6b are located within the concrete of the two shear wall layers. The upper "U"-shaped anchor 6a and the lower "U"-shaped anchor 6b not only strengthen the shear wall 1, but more importantly, after the concrete is poured, they can integrate the upper shear wall, the lower shear wall, and the floor slab into a whole, making the overall structure more robust and with better shear resistance.

[0054] Example 2

[0055] The main difference between this embodiment and Embodiment 1 is that the cavity of the high shear-strength steel plate shear wall in this embodiment is pre-cast with concrete in the factory. A top sealing plate 10 for sealing the upper end of the cavity is fixed between two shear-strength upper connectors 4 at the top of the shear wall 1. The top sealing plate 10 is welded and fixed to the steel plate and inner reinforcing plate 3 of the shear wall 1. Several "U"-shaped anchors 11 are welded and fixed at intervals on the top sealing plate 10. The top sealing plate 10 not only serves as a reinforcement and shear-strength material, but also, due to its location on the floor slab, can be used as a beam for the floor slab. Other structural features are the same.

[0056] In this embodiment, during on-site construction, it is not necessary to pour concrete for the steel plate shear wall; only the floor level and the pouring space 12 between the upper steel plate shear wall 7a and the lower steel plate shear wall 7b need to be poured.

[0057] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above examples. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel plate shear wall with high shear resistance, characterized in that: It includes, The shear wall (1) is a square structure with cavities for pouring filling material. Inner reinforcing plates (3) are welded and fixed to the inner sides of the four corners of the cavity. Two shear-resistant upper connectors (4) are welded and fixed to the two corners of the upper end of the shear wall (1), respectively. Two lower connectors (5) are respectively fixedly welded to the two corners of the lower end of the shear wall (1). The shear-resistant upper connector (4) includes an upper connecting plate (42) extending vertically upward, and the lower connector (5) includes a lower connecting plate (51) extending vertically downward. The lower connecting plate (51) of the upper shear wall (1) is welded and fixed to the upper connecting plate (42) of the lower shear wall (1). The shear wall (1) has square notches at its two top corners. The shear-resistant upper connector (4) is welded and fixed to the corresponding notches. The shear-resistant upper connector (4) includes an upper flange (40) and a lower flange (41) arranged in parallel. The upper connecting plate (42) is welded and fixed vertically upward to the end face of the upper flange (40). A supporting connecting plate (43) is provided between the upper flange (40) and the lower flange (41). The wing plate (40), the lower wing plate (41) and the support connecting plate (43) are welded and fixed to the steel plate and the inner reinforcing plate (3) of the shear wall (1). The outer side of the support connecting plate (43) is provided with a web plate (44) located between the upper wing plate (40) and the lower wing plate (41). Several connecting holes (45) are opened on the web plate (44). The shear wall (1) is connected to the imitation wall column (8) through the upper wing plate (40) and the web plate (44).

2. The high shear strength steel plate shear wall according to claim 1, characterized in that, The height of the upper connecting plate (42) is less than the height of the lower connecting plate (51). After the upper shear wall (1) is assembled on the lower shear wall (1), there is a pouring space (12) between the two for pouring concrete.

3. The high shear strength steel plate shear wall according to claim 2, characterized in that, The top of the shear wall (1) is provided with several upwardly extending upper reinforcing connectors at intervals between two shear-resistant upper connectors (4), and the bottom is provided with several downwardly extending lower reinforcing connectors at intervals between two lower connectors (5). After the upper and lower shear walls (1) are assembled and poured, the upper reinforcing connectors and the lower reinforcing connectors are located in the concrete poured by the two shear walls (1).

4. The high shear strength steel plate shear wall according to claim 1, characterized in that, The cavity is pre-filled with concrete before leaving the factory. The top of the shear wall (1) is fixed between two shear-resistant upper connectors (4) to a top sealing plate (10) for sealing the upper end of the cavity. The top sealing plate (10) is welded and fixed to the steel plate and inner lining reinforcement plate (3) of the shear wall (1).

5. The high shear strength steel plate shear wall according to claim 1, characterized in that, The lower connector (5) includes an upper top plate (50), the two sides of the upper top plate (50) are welded and fixed to the two inner lining reinforcing plates (3) inside the cavity, and the lower connector (51) is welded and fixed vertically downward to the bottom surface of the upper top plate (50).

6. A connection node for a steel plate shear wall with high shear resistance, characterized in that: It includes two steel plate shear walls and imitation wall columns (8) with high shear resistance as described in any one of claims 1-5, assembled along the height direction. The imitation wall columns (8) are fixed with hidden reinforcement members (80) and connecting brackets (81) at intervals at the floor slab position. A support plate (82) is welded and fixed to the outside of the imitation wall columns (8) at the position corresponding to the hidden reinforcement members (80). The connecting brackets (81) are located below the hidden reinforcement members (80). The shear wall body (1) of the upper steel plate shear wall is fixedly connected to the support plate (82), the hidden reinforcement members (80) and the connecting brackets (81) through the shear-resistant upper connector (4). The shear wall body (1) of the upper steel plate shear wall is welded and fixed to the upper connecting plate (42) of the shear wall body of the lower steel plate shear wall through the lower connecting plate (51).

7. The connection node of the high shear resistance steel plate shear wall according to claim 6, characterized in that, The shear-resistant upper connector (4) is welded and fixed to the support plate (82) and the hidden reinforcement (80) through the upper wing plate (40). The connecting bracket (81) is provided with a number of connecting holes (45) in cooperation with the web plate. The fixing bolt passes through the connecting holes (45) of the web plate (44) and the connecting bracket (81) to fix the shear-resistant upper connector (4) to the connecting bracket (81).

8. A construction method for a high shear-strength steel plate shear wall, the construction method being used to implement the connection nodes of the high shear-strength steel plate shear wall as described in any one of claims 6-7, characterized in that, It includes the following steps: The shear wall (1) located on the lower layer is connected to the connecting brackets (81) of the imitation wall columns (8) on both sides through two shear-resistant upper connectors (4) at the top. Precast floor slabs are poured, and formwork is laid around the shear-resistant upper connector (4) during the pouring process to form a non-poured area around the shear-resistant upper connector (4) that facilitates subsequent welding. The upper shear wall (1) is hoisted onto the lower shear wall (1). The lower connecting plate (51) of the upper shear wall (1) is welded and fixed to one side of the upper connecting plate (42) of the lower shear wall (1). The upper flange (40) is welded to the support plate (82) and the hidden reinforcement (80) of the imitation wall column (8). The floor slab is poured in a secondary manner, and the pouring space (12) between the upper and lower shear walls and the perimeter of the shear-resistant upper connection (4) are poured in a secondary manner so that the upper shear wall (1), the lower shear wall (1) and the floor slab are poured as a whole.

9. The construction method of the high shear strength steel plate shear wall according to claim 8, characterized in that, The filling material in the upper shear wall (1) and the lower shear wall (1) can be either cast in place or prefabricated in the factory.

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