A prefabricated component and assembly method for a fully prefabricated double-steel-plate shear wall structure

Abstract

This invention discloses a prefabricated component and assembly method for a fully prefabricated double-steel-plate shear wall structure, relating to the field of building technology. The prefabricated component comprises two parallel outer steel plates, with an H-beam evenly placed between them. The steel plates and the H-beam are bolted together, forming a multi-cavity structure. The concrete in each cavity has a trapezoidal groove at the top and a trapezoidal key at the bottom. Tie bolt holes are provided on the outer steel plates in the trapezoidal key and groove areas. The H-beam has node boxes at both the top and bottom. Tie bolt holes are also provided vertically along the edges of both sides of the prefabricated component. This invention utilizes the aforementioned prefabricated component and assembly method for a fully prefabricated double-steel-plate shear wall structure, employing bolted connections to assemble the prefabricated component. The interaction between high-strength bolts, high-strength steel plates, and concrete ensures superior shear and tensile strength in the joint area.

Description

Technical Field

[0001] This invention relates to the field of building technology, and in particular to a prefabricated component and assembly method for a fully prefabricated double steel plate shear wall structure. Background Technology

[0002] Most current research on prefabricated shear walls focuses on their seismic performance. Although research on their assembly methods and technologies is still relatively scarce and wet connections are commonly used, prefabricated double-steel plate composite components have already demonstrated mechanical and seismic performance close to that of traditional double-steel plate composite components. Double-steel plate concrete composite components, especially those with externally encased multi-cavity steel plate concrete composite components, have inherent advantages in prefabrication.

[0003] The bond strength between concrete and reinforcing steel is far superior to that of ordinary concrete, effectively simplifying the construction of anchored reinforcing bars and shortening the anchorage length, thereby optimizing the reinforcing bar binding and concrete pouring processes. Therefore, concrete is very suitable as a connection material for prefabricated structures. Currently, the engineering application and research of concrete in prefabricated structures mainly focus on the bridge field. In bridge engineering, the earliest and most widespread application of concrete is as a joint material for precast components, used to connect precast bridge segments, precast bridge decks, and precast piers and foundations. Studies have shown that both ordinary concrete precast components and concrete precast components using concrete joints exhibit good basic mechanical properties and seismic performance.

[0004] The all-bolted connection assembly method is simple to construct, helps ensure construction quality, and has the potential to develop towards automated construction. Furthermore, due to the extremely high strength of concrete, the demolition of concrete components remains a challenging problem for the academic community. Therefore, this invention provides a fully prefabricated assembly of prefabricated components for a double-steel-plate shear wall structure and its assembly method. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated component and assembly method for a fully prefabricated double-steel-plate shear wall structure, offering a new solution for the development of prefabricated shear wall structures.

[0006] To achieve the above objectives, this invention provides a prefabricated component for a fully prefabricated double-steel-plate shear wall structure, comprising a prefabricated steel plate shear wall component. The prefabricated component consists of two relatively parallel outer steel plates, H-beams evenly placed between the two outer steel plates, and inner concrete filling. The steel plates and H-beams are connected by bolts. Node boxes are provided at the top and bottom of the H-beams. Trapezoidal key teeth are provided at the lower edge of the concrete, and trapezoidal grooves are provided at the upper edge of the concrete to match the trapezoidal key teeth. Tie bolt holes are provided on the outer steel plates in the key teeth and groove areas of the concrete. Tie bolt holes are provided on both sides of the prefabricated steel plate shear wall component. Edge channel steel is required at the edge of the outermost prefabricated steel plate shear wall component of the structure, and pre-reserved tie bolt holes are provided at the upper and lower ends.

[0007] Preferably, when two adjacent precast steel plate shear wall components are connected in the vertical direction, the concrete trapezoidal key teeth and trapezoidal tooth grooves are connected by key tooth splicing plates and tie bolts, and the H-beams are connected by sleeves.

[0008] Preferably, both the upper and lower ends of the H-beam have welded end plates, and stiffening ribs are provided between the end plates. The stiffening ribs, end plates, and outer steel plates together form a node box. The node box is inserted into the inner sleeve of the double channel steel. The inner sleeve of the double channel steel has evenly distributed bolt holes, the positions of which correspond one-to-one with the reserved bolt holes on the H-beam and the outer steel plate in the node box area.

[0009] Preferably, the horizontal connecting plates are evenly distributed on the precast steel plate shear wall components, and the horizontal connecting plates are provided with four tie bolt holes. The horizontal connecting plates are connected to the precast steel plate shear wall components through tie bolts.

[0010] Preferably, the precast steel plate shear wall component located on the outermost side of the structure is provided with an edge channel steel, and an end channel splicing plate is provided at the connection of the vertical edge channel steel. The end channel splicing plate is connected to the precast steel plate shear wall component by tie bolts, and the tie bolts pass through the end channel splicing plate, the outer steel plate, the edge channel steel and the concrete in sequence.

[0011] A method for assembling prefabricated components of a fully prefabricated double-steel-plate shear wall structure includes the following steps:

[0012] Step 1: During vertical assembly, first insert the precast double-channel steel inner sleeve into the bottom node box of the upper precast component H-beam and fix it with tie bolts. Then, insert the concrete trapezoidal key teeth of the upper precast component into the concrete trapezoidal tooth groove of the lower precast component. At the same time, insert the precast double-channel steel inner sleeve into the top node box of the lower precast component H-beam. Use tie bolts to install the key tooth splicing plate and complete the final tightening of the tie bolts in the H-beam connection area.

[0013] Step 2: During horizontal assembly, assemble the left and right prefabricated components using the horizontal connecting plate, ensuring that the horizontal connecting plate is precisely aligned with the reserved tie bolt holes on the prefabricated components, and then install the tie bolts.

[0014] Step 3: Install end slotted splice plates on the outermost prefabricated components of the structure. The bolt holes on the end slotted splice plates need to be aligned with the reserved bolt holes and connected by tie bolts.

[0015] Preferably, the construction sequence of vertical assembly and horizontal assembly can be interchanged according to the actual situation.

[0016] Therefore, this invention employs a prefabricated, assembled double-steel-plate shear wall structure and its assembly method. The steel-concrete composite structure avoids the technical difficulties of rebar connection in traditional prefabricated reinforced concrete structures. Bolted connections are used to splice the outer steel plates, and the interaction between high-strength bolts, high-strength steel plates, and concrete ensures superior shear and tensile strength in the joint area, thus meeting the design principle of strong connections and weak components. Furthermore, the prefabricated components can be reused after dismantling, making them highly practical. The use of a fully bolted connection method makes dismantling the prefabricated, assembled, multi-cavity high-strength steel-concrete composite structure extremely simple. Simply removing the bolts at the joints allows the entire structure to be disassembled into several standardized prefabricated components, which can then be reused in other engineering structures, significantly reducing carbon emissions throughout the structure's life cycle.

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the prefabricated double steel plate shear wall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the prefabricated components of the prefabricated double steel plate shear wall structure of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 for Figure 2 Structural method diagram at point B;

[0022] Figure 5 This is a schematic diagram of the H-shaped steel structure of the present invention;

[0023] Figure 6 for Figure 5 Enlarged view of the structure at point C;

[0024] Figure 7This is a schematic diagram of the vertical connection structure of the prefabricated components of the present invention;

[0025] Figure 8 for Figure 7 Enlarged view of the structure at point D;

[0026] Figure 9 This is a schematic diagram of the transverse connection structure of the prefabricated components of the present invention;

[0027] Figure Labels

[0028] 1. Outer steel plate; 2. Keyed splice plate; 3. End grooved splice plate; 4. Edge channel steel; 5. Horizontal connecting plate; 6. Tie bolt; 7. Tie bolt hole; 8. Node box; 9. H-beam; 10. Trapezoidal key; 11. Double channel steel inner sleeve; 12. Trapezoidal tooth groove; 13. End plate; 14. Stiffening rib; 15. Friction type high-strength bolt. Detailed Implementation

[0029] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] Example

[0032] Please see Figures 1-9This invention provides a prefabricated component for a fully prefabricated double-plate shear wall structure, comprising a prefabricated steel plate shear wall component. The prefabricated component is designed according to standardized methods and can be mass-produced in a factory. The prefabricated steel plate shear wall component consists of two relatively parallel outer steel plates 1, H-beams 9 evenly placed between the two outer steel plates 1, and internal concrete filling. The H-beams 9 are evenly distributed within the prefabricated steel plate shear wall component. The outer steel plates 1 and H-beams 9 are connected by friction-type high-strength bolts 15. The interior of the prefabricated steel plate shear wall component is filled with concrete. The lower edge of the concrete has trapezoidal key teeth 10, and the upper edge of the concrete has trapezoidal grooves 12 that match the trapezoidal key teeth 10. Both the upper and lower ends of the H-beams 9 have welded end plates 13, and stiffening ribs 14 are provided between the end plates 13. The stiffening ribs 14, the end plates 13, and the outer steel plates 1 in this area together form a node box 8.

[0033] In the vertical direction, the trapezoidal key teeth 10 and trapezoidal grooves 12 of two adjacent steel plate shear wall precast components are connected by tie bolts 6 through key splicing plates 2; the H-beams 9 are connected by double-channel steel inner sleeves 11, which are provided with bolt holes and can be connected to the H-beam flanges and outer steel plates 1 in the node box area through tie bolts 6. Through the synergistic effect of the geometric constraints of the sleeve-node box and the bolt preload, a continuous transmission path of axial force, shear force and bending moment is formed, ensuring the effective connection of mechanical properties between precast components.

[0034] Two adjacent precast steel plate shear wall components in the horizontal direction are connected by a horizontal connecting plate 5. The horizontal connecting plate 5 is evenly distributed on the precast steel plate shear wall components. The horizontal connecting plate 5 is provided with four tie bolt holes 7. The horizontal connecting plate 5 is connected to the precast steel plate shear wall components by tie bolts 6. The tie bolts 6 pass through the tie bolt holes 7 reserved at both ends of the left and right components and the splicing plate is installed using the tie bolts 6.

[0035] The outermost precast steel plate shear wall component has edge channel steel 4 at its end. The edge channel steel 4 at the end are connected by end channel-shaped splicing plates 3. The end channel-shaped splicing plates 3 are connected to the precast steel plate shear wall component by tie bolts 6, which pass through the end channel-shaped splicing plates 3 and the edge channel steel 4 in sequence. The end channel-shaped splicing plates 3 ensure sufficient tensile and shear strength in the area of ​​maximum stress under seismic action.

[0036] The prefabricated steel plate shear wall components are provided with multiple pre-reserved tie bolt holes 7.

[0037] A method for assembling prefabricated components of a fully prefabricated double-steel-plate shear wall structure includes the following steps:

[0038] Step 1: During vertical assembly, first insert the precast double-channel steel inner sleeve 11 into the bottom node box 8 of the upper precast component H-beam 9 and fix it with tie bolts 6. Insert the concrete trapezoidal key teeth 10 of the upper precast component into the concrete trapezoidal tooth groove 12 of the lower precast component. At the same time, insert the precast double-channel steel inner sleeve 11 into the top node box 8 of the lower precast component H-beam 9. Use tie bolts 6 to install the key tooth splicing plate 2 and complete the final tightening of the tie bolts 6 in the connection area of ​​the H-beam 9.

[0039] Step 2: During horizontal assembly, assemble the two prefabricated components on the left and right sides using the horizontal connecting plate 5, ensuring that the horizontal connecting plate 5 is precisely aligned with the reserved hole on the opposite side, and install the tie bolts 6.

[0040] Step 3: Install the edge channel steel 4 on the outermost prefabricated component of the prefabricated shear wall structure and seal the horizontal joint of the steel plate shear wall prefabricated component through the end channel splicing plate 3.

[0041] Therefore, this invention employs the aforementioned prefabricated components and assembly method for a fully prefabricated double-steel-plate shear wall structure. The steel-concrete composite structure avoids the technical difficulties of rebar connection in traditional prefabricated reinforced concrete structures. Bolted connections are used to splice the outer steel plates, and the interaction between high-strength bolts, high-strength steel plates, and concrete ensures superior shear and tensile strength in the joint area, thus meeting the design principle of strong connections and weak components. Furthermore, the prefabricated components can be reused after dismantling, making it highly practical.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A prefabricated component for a fully prefabricated double-steel-plate shear wall structure, characterized in that: The steel plate shear wall prefabricated component is composed of two pieces of outer steel plates placed in parallel, H-shaped steel uniformly placed between the two pieces of outer steel plates, and concrete filled in the middle. The outer steel plates and the H-shaped steel are connected by bolts. The top and bottom of the H-shaped steel are provided with node boxes. The lower edge of the concrete is provided with trapezoidal key teeth. The upper edge of the concrete is provided with trapezoidal tooth grooves matched with the trapezoidal key teeth. The outer steel plates above the concrete key teeth and tooth groove areas are provided with bolt holes for tension. The two side edges of the steel plate shear wall prefabricated component are provided with bolt holes for tension. The edge channel steel needs to be arranged at the edge of the steel plate shear wall prefabricated component located at the outermost side of the structure. The upper and lower ends are provided with reserved bolt holes for tension. The two steel plate shear wall prefabricated components adjacent in the vertical direction are connected. The concrete trapezoidal key teeth and the trapezoidal tooth grooves are connected by key tooth splicing plates and bolts for tension. The H-shaped steel is connected by sleeves. The ends of the upper and lower ends of the H-shaped steel are provided with end plates welded. The stiffening ribs are arranged between the end plates. The stiffening ribs, the end plates, and the outer steel plates jointly form node boxes. The node boxes are inserted into the double channel steel inner sleeves. The double channel steel inner sleeves are provided with uniformly distributed bolt holes. The positions correspond to the reserved bolt holes on the H-shaped steel and the outer steel plates in the node box area.

2. The prefabricated component of a full-precast assembled double-steel-plate shear wall structure according to claim 1, characterized in that: The horizontal connecting plates are uniformly arranged on the steel plate shear wall prefabricated component. The horizontal connecting plates are provided with four bolt holes for tension. The horizontal connecting plates are connected with the steel plate shear wall prefabricated component by bolts for tension.

3. The prefabricated component of a full-precast assembled double-steel-plate shear wall structure according to claim 1, characterized in that: The steel plate shear wall prefabricated component located at the outermost side of the structure is provided with an edge channel steel. The end channel type splicing plate is arranged at the vertical edge channel steel connection. The end channel type splicing plate and the steel plate shear wall prefabricated component are connected by bolts for tension. The bolts for tension pass through the end channel type splicing plate, the outer steel plate, the edge channel steel, and the concrete in sequence.

4. The method of assembling the prefabricated components of a full-precast fabricated double-steel-plate shear wall structure according to any one of claims 1-3, characterized in that, The method comprises the following steps: In the vertical assembly, first, the prefabricated double channel steel inner sleeve is inserted into the bottom node box of the upper prefabricated component H-shaped steel and fixed by bolts for tension. Then, the concrete trapezoidal key teeth of the upper prefabricated component are inserted into the concrete trapezoidal tooth grooves of the lower prefabricated component. At the same time, the prefabricated double channel steel inner sleeve is inserted into the top node box of the lower prefabricated component H-shaped steel. The key tooth splicing plate is installed by bolts for tension, and the connection area of the H-shaped steel is finally tightened by bolts for tension. In the horizontal assembly, the left and right prefabricated components are assembled by the horizontal connecting plate. The horizontal connecting plate and the reserved bolt holes for tension on the prefabricated component are accurately centered. The bolts for tension are installed. The end channel type splicing plate is installed at the outermost side of the prefabricated component. The bolt holes on the end channel type splicing plate need to be centered with the reserved bolt holes. The bolts for tension are connected.

5. The assembling method of the prefabricated component of the full-prefabricated assembled double-steel-plate shear wall structure according to claim 4, characterized in that: The construction sequence of the vertical assembly and the horizontal assembly can be interchanged according to the actual situation.

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