A double-layered composite shear wall and its construction method

Abstract

This invention relates to a double-panel split composite shear wall and its construction method, comprising two symmetrically arranged precast wall panels. Each precast wall panel has four symmetrically arranged bolt holes at its four corners. A single adjusting bolt is installed inside two corresponding bolt holes on each of the two precast wall panels. Two symmetrically arranged adjusting nuts are threaded onto the outer wall of the adjusting bolt, located on opposite sides of the two precast wall panels. A connecting assembly for connecting the two precast wall panels is provided between them. Concrete is poured between the assembled two precast wall panels. This invention solves the problems of existing one-piece precast concrete shear walls being heavy, difficult to handle and transport, and existing double-sided composite panels being difficult to roughen and requiring numerous factory equipment for rapid assembly.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated building technology and relates to a double-layered, separate, composite shear wall and its construction method. Background Technology

[0002] Shear walls, also known as wind-resistant walls, earthquake-resistant walls, or structural walls, are walls in buildings or structures that primarily bear horizontal and vertical loads (gravity) caused by wind or earthquakes, preventing structural shear failure. They are generally made of reinforced concrete, but to increase the structure's stiffness, strength, and resistance to collapse, reinforcing steel bars can be cast-in-place or precast in certain areas. Cast-in-place shear walls are poured simultaneously with surrounding beams and columns, resulting in good overall integrity.

[0003] Existing precast shear walls are prefabricated in factories and connected on-site using sleeve grouting, which has problems such as heavy weight, difficult transportation and installation, and poor overall integrity.

[0004] Existing composite shear walls are constructed by manufacturing two precast thin wall panels in a factory, connecting the two hollow wall panels with steel trusses, and then transporting them to the site for on-site pouring of a cast-in-place concrete layer. Because the two precast thin wall panels need to be molded as a single unit, there are problems such as difficulty in creating a rough surface and the need for extensive factory equipment during the manufacturing process. Therefore, a composite shear wall system that is easy to assemble is needed, where two precast wall panels are manufactured separately in a factory and then assembled on-site to form a complete shear wall. Summary of the Invention

[0005] In view of this, in order to solve the problems of existing one-piece precast concrete shear walls being heavy, difficult to handle and transport, and existing double-sided composite slabs being difficult to roughen and requiring a lot of factory equipment during the manufacturing process, making rapid assembly inconvenient, the present invention provides a double-piece separable composite shear wall and its construction method.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A double-panel split composite shear wall includes two symmetrically arranged precast wall panels. Each precast wall panel has four symmetrical bolt holes at its four corners. The same adjusting bolt is installed inside the corresponding two bolt holes on the two precast wall panels. The outer wall of the adjusting bolt is threaded with two symmetrically arranged adjusting nuts. The two adjusting nuts are located on both sides of the two precast wall panels. A connecting component for connecting the two precast wall panels is provided between them. Concrete is poured between the assembled two precast wall panels.

[0008] Furthermore, steel trusses are embedded in the precast wall panels, and the precast steel trusses are interlocked. The connecting components include a first wire mesh set between two precast wall panels and fixed steel bars with hooks welded evenly. Several rows of fixed rings are fixedly welded to both sides of the first wire mesh, and the inner diameter of the fixed rings is adapted to the fixed steel bars.

[0009] Furthermore, steel trusses are embedded in the precast wall panels, and the precast steel trusses are staggered in the precast wall panels. The connecting components include a second steel mesh set between two precast wall panels and fixed steel bars with hooks welded evenly. The transverse steel bars in the second steel mesh have curled insertion rings on both sides, and the insertion rings on one side of the second steel mesh are longitudinally aligned.

[0010] Furthermore, the connecting component includes multiple rows of transverse U-shaped rings embedded in two precast wall panels. The corresponding two rows of transverse U-shaped rings in the two precast wall panels are inserted into each other to form an insertion ring, and a fixing steel bar is inserted into the insertion ring.

[0011] Furthermore, the connecting component includes multiple rows of longitudinal U-shaped rings embedded in two precast wall panels. The corresponding two rows of longitudinal U-shaped rings in the two precast wall panels are inserted into each other to form an insertion ring, and a fixing steel bar is inserted into the insertion ring.

[0012] Furthermore, the connecting components include multiple rows of horizontal L-shaped clips embedded in one precast wall panel and multiple rows of vertical L-shaped clips embedded in another precast wall panel, with the corresponding horizontal L-shaped clips and vertical L-shaped clips in the two precast wall panels engaging with each other.

[0013] Furthermore, the connecting component includes multiple rows of oblique L-shaped clips embedded in two precast wall panels. The corresponding oblique L-shaped clips in the two precast wall panels are interlocked to form an insertion ring, and a fixing steel bar is inserted into the insertion ring.

[0014] Furthermore, the connecting component includes a row of rectangular frames embedded in two precast wall panels, and the corresponding rectangular frames in the two precast wall panels 1 overlap to form a steel bar insertion area in which fixed steel bars are inserted.

[0015] Furthermore, the connecting assembly includes a fixing plate welded to one side of two prefabricated wall panels that are close to each other. The fixing plate has holes inside, and fixing steel bars are inserted into multiple holes at the same height.

[0016] A construction method for a double-layered, separated composite shear wall includes the following steps:

[0017] S1. Place two prefabricated wall panels in a suitable position and connect the two prefabricated wall panels together using the connecting components between the two prefabricated wall panels;

[0018] S2. After the connection is completed, rotate the adjusting nut to adjust the distance between the two precast wall panels. After the distance is adjusted, pour concrete between the two precast wall panels. After the concrete is poured and formed, remove the four adjusting bolts.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The double-panel split composite shear wall disclosed in this invention is different from the traditional shear wall. The two prefabricated shear walls are manufactured separately, transported to the site and then installed. It is lighter and easier to move and transport. The distance between the two prefabricated wall panels can be easily adjusted by adjusting nuts and adjusting bolts, which can adapt to different construction needs.

[0021] 2. The double-panel split composite shear wall disclosed in this invention has a variety of connecting components, which are suitable for different scenarios. The setting of the connecting components makes the stability between the precast wall panel and the inserted steel bars higher.

[0022] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 This is a three-dimensional structural diagram of two prefabricated wall panels in the double-layered composite shear wall of the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of the double-layered split composite shear wall in Embodiment 1 of the present invention;

[0026] Figure 3 This is a three-dimensional exploded view of the double-layered composite shear wall in Embodiment 1 of the present invention;

[0027] Figure 4 This is a three-dimensional schematic diagram of the double-layered split composite shear wall in Embodiment 2 of the present invention;

[0028] Figure 5 This is a three-dimensional schematic diagram of a double-layered split composite shear wall with one prefabricated wall panel removed in Embodiment 2 of the present invention;

[0029] Figure 6 This is a three-dimensional schematic diagram of the double-layered split composite shear wall in Embodiment 3 of the present invention;

[0030] Figure 7 This is a three-dimensional schematic diagram of the double-layered split composite shear wall in Embodiment 4 of the present invention;

[0031] Figure 8 This is a three-dimensional schematic diagram of the double-layered split composite shear wall in Embodiment 5 of the present invention;

[0032] Figure 9 This is an exploded view of the double-layered, separated composite shear wall in Embodiment 5 of the present invention;

[0033] Figure 10 This is a three-dimensional schematic diagram of the double-layered split composite shear wall in Embodiment Six of the present invention;

[0034] Figure 11 This is an exploded view of the double-layered, separated composite shear wall in Embodiment Six of the present invention;

[0035] Figure 12 This is a three-dimensional schematic diagram of the double-layered split composite shear wall in Embodiment 7 of the present invention;

[0036] Figure 13 This is a three-dimensional schematic diagram of a double-layered split composite shear wall in Embodiment 7 of the present invention, showing the removal of one prefabricated wall panel.

[0037] Figure 14 This is a three-dimensional schematic diagram of the double-layered split composite shear wall in Embodiment 8 of the present invention;

[0038] Figure 15 This is a three-dimensional schematic diagram of a double-layered, separated, composite shear wall with one prefabricated wall panel removed, as shown in Embodiment 8 of the present invention.

[0039] Reference numerals: 1. Precast wall panel; 2. Bolt hole; 3. Adjusting nut; 4. Adjusting bolt; 5. Steel truss; 6. First wire mesh; 7. Fixed steel bar; 8. Fixing ring; 9. Hook; 10. Insert ring; 11. Second steel mesh; 12. Horizontal U-shaped ring; 13. Longitudinal U-shaped ring; 14. Horizontal L-shaped buckle; 15. Longitudinal L-shaped buckle; 16. Diagonal L-shaped buckle; 17. Rectangular frame; 18. Fixing plate; 19. Insertion hole. Detailed Implementation

[0040] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0042] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0043] Example 1

[0044] like Figures 1-3 The illustrated double-panel split composite shear wall includes two symmetrically arranged precast wall panels 1. Each precast wall panel 1 has four symmetrically arranged bolt holes 2 at its four corners. A single adjusting bolt 4 is installed inside each pair of corresponding bolt holes 2 on the two precast wall panels 1. Two symmetrically arranged adjusting nuts 3 are threaded onto the outer wall of the adjusting bolt 4, located on opposite sides of the two precast wall panels 1. A connecting assembly for connecting the two precast wall panels 1 is provided between them. The distance between the two precast wall panels 1 can be adjusted by the cooperation of the adjusting nuts 3 and the adjusting bolts 4.

[0045] Precast wall panels 1 are embedded with steel trusses 5, which are interlocked and staggered. The connecting components include a first wire mesh 6 between two precast wall panels 1 and fixed steel bars 7 with hooks 9 evenly welded on them. Several rows of fixed rings 8 are fixedly welded to both sides of the first wire mesh 6, and the inner diameter of the fixed rings 8 is adapted to the fixed steel bars 7. After the fixed steel bars 7 are inserted into the corresponding rows of fixed rings 8 of the first wire mesh 6, the arc-shaped hooks 9 are welded to the fixed steel bars 7 respectively. By rotating the fixed steel bars 7, the hooks 9 are hooked onto the precast steel trusses 5 on the corresponding sides, thus assembling the precast wall panels 1. Then, the distance between the two precast wall panels 1 is finely adjusted by adjusting nuts 3 and adjusting bolts 4 before the hollow part between the two precast wall panels 1 is poured. The first wire mesh 6 and the fixed steel bars 7 not only connect the two precast wall panels 1, but also enhance the strength of the precast composite shear wall.

[0046] Example 2

[0047] like Figure 4-5 The illustrated double-panel split composite shear wall includes two symmetrically arranged precast wall panels 1. Each precast wall panel 1 has four symmetrically arranged bolt holes 2 at its four corners. A single adjusting bolt 4 is installed inside each pair of corresponding bolt holes 2 on the two precast wall panels 1. Two symmetrically arranged adjusting nuts 3 are threaded onto the outer wall of the adjusting bolt 4, located on opposite sides of the two precast wall panels 1. A connecting assembly for connecting the two precast wall panels 1 is provided between them. The distance between the two precast wall panels 1 can be adjusted by the cooperation of the adjusting nuts 3 and the adjusting bolts 4.

[0048] Precast wall panels 1 are embedded with steel trusses 5, which are interlocked and staggered. The connecting components include a second steel mesh 11 between two precast wall panels 1 and fixed steel bars 7 uniformly welded with hooks 9. The transverse steel bars in the second steel mesh 11 have curled insertion rings 10 on both sides, and the insertion rings 10 on one side of the second steel mesh 11 are longitudinally aligned. The inner diameter of the insertion rings 10 is adapted to the fixed steel bars 7. After the fixed steel bars 7 are inserted into the corresponding column of insertion rings 10 of the second steel mesh 11, the arc-shaped hooks 9 are welded to the fixed steel bars 7 respectively. By rotating the fixed steel bars 7, the hooks 9 are hooked onto the corresponding embedded steel trusses 5, thus assembling the precast wall panels 1. Then, the distance between the two precast wall panels 1 is finely adjusted by adjusting nuts 3 and adjusting bolts 4 before the hollow part between the two precast wall panels 1 is poured. The second steel mesh 11 and the fixed steel bars 7 not only connect the two precast wall panels 1 but also enhance the strength of the precast composite shear wall.

[0049] Example 3

[0050] like Figure 6 The illustrated double-panel split composite shear wall includes two symmetrically arranged precast wall panels 1. Each precast wall panel 1 has four symmetrically arranged bolt holes 2 at its four corners. A single adjusting bolt 4 is installed inside each pair of corresponding bolt holes 2 on the two precast wall panels 1. Two symmetrically arranged adjusting nuts 3 are threaded onto the outer wall of the adjusting bolt 4, located on opposite sides of the two precast wall panels 1. A connecting assembly for connecting the two precast wall panels 1 is provided between them. The distance between the two precast wall panels 1 can be adjusted by the cooperation of the adjusting nuts 3 and the adjusting bolts 4.

[0051] The connecting assembly includes multiple rows of transverse U-shaped rings 12 embedded in two precast wall panels 1. The corresponding two rows of transverse U-shaped rings 12 in the two precast wall panels 1 are inserted into each other to form an insertion ring. A fixing steel bar 7 is inserted into the formed insertion ring to realize the assembly of the precast wall panels 1. Then, the distance between the two precast wall panels 1 is finely adjusted by adjusting the nut 3 and adjusting bolt 4 before the hollow part between the two precast wall panels 1 is poured. The transverse U-shaped rings 12 and the fixing steel bar 7 not only connect the two precast wall panels 1, but also enhance the strength of the precast composite shear wall.

[0052] Example 4

[0053] like Figure 7 The difference between Embodiment 4 and Embodiment 3 of the double-panel split composite shear wall shown is that the connecting component includes multiple rows of longitudinal U-shaped rings 13 pre-embedded in the two precast wall panels 1. The corresponding two rows of longitudinal U-shaped rings 13 in the two precast wall panels 1 are inserted into each other to form an insertion ring. The fixed steel bars 7 are inserted into the formed insertion ring to realize the assembly of the precast wall panels 1. Then, the distance between the two precast wall panels 1 is finely adjusted by adjusting nuts 3 and adjusting bolts 4 before the hollow part between the two precast wall panels 1 is poured. The longitudinal U-shaped rings 13 and the fixed steel bars 7 not only connect the two precast wall panels 1, but also enhance the strength of the precast composite shear wall.

[0054] Example 5

[0055] like Figure 8-9 The difference between Embodiment 5 and Embodiment 3 of the double-panel split composite shear wall shown is that the connecting components include multiple rows of transverse L-shaped clips 14 pre-embedded in one precast wall panel 1 and multiple rows of longitudinal L-shaped clips 15 pre-embedded in the other precast wall panel 1. The corresponding transverse L-shaped clips 14 and longitudinal L-shaped clips 15 in the two precast wall panels 1 engage to realize the assembly of the precast wall panels 1. After fine-tuning the distance between the two precast wall panels 1 by adjusting the nuts 3 and adjusting bolts 4, the hollow part between the two precast wall panels 1 is poured. The transverse L-shaped clips 14 and longitudinal L-shaped clips 15 not only connect the two precast wall panels 1, but also enhance the strength of the precast composite shear wall.

[0056] Example 6

[0057] like Figure 10-11The difference between Embodiment Six and Embodiment Five of the double-panel split composite shear wall shown is that the connecting component includes multiple rows of oblique L-shaped clips 16 pre-embedded in the two precast wall panels 1. The corresponding oblique L-shaped clips 16 in the two precast wall panels 1 are interlocked to form an insertion ring. The fixed steel bars 7 are inserted into the formed insertion ring to realize the assembly of the precast wall panels 1. After the distance between the two precast wall panels 1 is finely adjusted by adjusting the nuts 3 and adjusting bolts 4, the hollow part between the two precast wall panels 1 is poured. The oblique L-shaped clips 16 and the fixed steel bars 7 not only connect the two precast wall panels 1, but also enhance the strength of the precast composite shear wall.

[0058] Example 7

[0059] like Figure 12-13 The difference between Embodiment 7 and Embodiment 3 of the double-panel split composite shear wall shown is that the connecting component includes a row of rectangular frames 17 embedded in the two precast wall panels 1. The corresponding rectangular frames 17 in the two precast wall panels 1 overlap to form a steel bar insertion area. Fixed steel bars 7 are inserted into both ends of the formed insertion area to realize the assembly of the precast wall panels 1. After fine-tuning the distance between the two precast wall panels 1 by adjusting the nuts 3 and adjusting bolts 4, the hollow part between the two precast wall panels 1 is poured. The rectangular frames 17 and fixed steel bars 7 not only connect the two precast wall panels 1, but also enhance the strength of the precast composite shear wall.

[0060] Example 8

[0061] like Figure 14-15 The difference between Embodiment 8 and Embodiment 7 of the double-panel split composite shear wall shown is that the connecting component includes a fixing plate 18 welded to one side of the two prefabricated wall panels 1 that are close to each other. The fixing plate 18 has insertion holes 19 inside, and the same fixing steel bar 7 is inserted into multiple insertion holes 19 at the same height to realize the assembly of the prefabricated wall panels 1. After the distance between the two prefabricated wall panels 1 is finely adjusted by adjusting nuts 3 and adjusting bolts 4, the hollow part between the two prefabricated wall panels 1 is poured. The fixing plate 18 and the fixing steel bar 7 not only connect the two prefabricated wall panels 1, but also enhance the strength of the prefabricated composite shear wall.

[0062] A construction method for a double-layered, separated composite shear wall includes the following steps:

[0063] S1. Place two prefabricated wall panels 1 in a suitable position and connect the two prefabricated wall panels 1 together using the connecting components between the two prefabricated wall panels 1.

[0064] S2. After the connection is completed, rotate the adjusting nut 3 to adjust the distance between the two precast wall panels 1. After the distance is adjusted, pour concrete between the two precast wall panels 1. After the concrete has been poured for a period of time, remove the four adjusting bolts 4.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. 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 be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A double-panel split composite shear wall, comprising two symmetrically arranged precast wall panels, each precast wall panel having four symmetrically arranged bolt holes at its four corners, each precast wall panel having a single adjusting bolt inside two corresponding bolt holes, the outer wall of the adjusting bolt having two symmetrically arranged adjusting nuts threaded onto its outer wall, the two adjusting nuts being located on opposite sides of the two precast wall panels, a connecting assembly for connecting the two precast wall panels being provided between them, concrete being poured between the assembled two precast wall panels, steel trusses being embedded in the precast wall panels, the embedded steel trusses in the interlocking precast wall panels being staggered, the connecting assembly including a first wire mesh disposed between the two precast wall panels and fixing steel bars uniformly welded with hooks, several rows of fixing rings being fixedly welded alternately on both sides of the first wire mesh, the inner diameter of the fixing rings being adapted to the fixing steel bars.

2. A double-panel split composite shear wall, comprising two symmetrically arranged precast wall panels, each precast wall panel having four symmetrically arranged bolt holes at its four corners, with the same adjusting bolt inside each corresponding bolt hole on the two precast wall panels, and two symmetrically arranged adjusting nuts threaded onto the outer wall of the adjusting bolt, the two adjusting nuts being located on opposite sides of the two precast wall panels, a connecting assembly for connecting the two precast wall panels being provided between them, concrete being poured between the assembled two precast wall panels, steel trusses being embedded in the precast wall panels, the embedded steel trusses in the interlocking precast wall panels being staggered, the connecting assembly including a second steel mesh disposed between the two precast wall panels and fixing steel bars uniformly welded with hooks, the transverse steel bars in the second steel mesh having curled insertion rings on both sides, the insertion rings on one side of the second steel mesh being longitudinally alternately corresponding.

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