A joint structure for connecting vertical and horizontal walls of a composite shear wall with openings and reinforced joints

Abstract

The present invention discloses a structure for connecting nodes of longitudinal and transverse walls of a composite shear wall with an opening, wherein the stirrups of the prefabricated edge member of the prefabricated wall with an opening are composite stirrups, and the open stirrups of the composite stirrups are bent and extended through the cavity of the prefabricated wall into the vertical post-cast section connected to the prefabricated wall. The connection between the prefabricated wall with the opening and the vertical post-cast section at the connection node of the longitudinal and transverse walls is achieved with the help of the open stirrups. The present invention does not require the arrangement of special horizontal connecting steel bars in the cavity of the prefabricated wall with an opening, thereby avoiding the problem of interference between the horizontal connecting steel bars and the vertical steel bars and additional connecting steel bars of the edge member in the cavity of the prefabricated wall with an opening in the existing structure, and ensuring the vibration space during the pouring of post-cast concrete in the cavity of the edge member of the prefabricated wall with an opening; at the same time, the side reinforcement is achieved by means of the cavity, thereby avoiding the need for opening holes in the side mold of the prefabricated wall, which is conducive to the standardization and generalization of the prefabricated wall mold, and avoiding the problem of alignment between the side reinforcement and the side mold, thereby improving the production efficiency of the prefabricated wall.

Description

Technical Field

[0001] The invention belongs to the field of building technology, relates to a composite shear wall, and in particular to a composite shear wall with an opening and a reinforcement connection node structure on the side surfaces of the vertical and horizontal walls. Background Art

[0002] The processing and installation precision requirements of composite shear walls are low, which can effectively reduce the connection cost of prefabricated walls and the connection quality is controllable. Its representative system is the double-sided composite shear wall structure.

[0003] In the double-sided composite shear wall structure, the longitudinal and transverse prefabricated walls are mostly connected by vertical post-cast sections, especially on the north and south facades of residential buildings. There are a large number of prefabricated walls with openings, and the wall limbs on one side are relatively short, mostly less than 800mm. Prefabricated edge components need to be set to realize the splitting of the prefabricated walls. At this time, the prefabricated edge components of the prefabricated wall with openings will be directly connected to the vertical post-cast sections. In the existing node structure at this position, horizontal connecting steel bars need to be arranged in the cavity of the prefabricated wall with openings to realize the connection between the prefabricated wall with openings and the vertical post-cast sections. In addition, connecting steel bars need to be arranged in the cavity of the prefabricated edge components of the prefabricated wall with openings to overlap and connect with the vertical steel bars of the edge components of the prefabricated wall. As a result, the net distance between the horizontal connecting steel bar skin within the overlap range of the vertical steel bars of the edge components of the prefabricated wall is only 30mm, and the net distance between the outer skin of the horizontal connecting steel bar and the inner side of the concrete wall panel of the prefabricated wall is only 25mm. The concrete vibrator cannot be inserted into the cavity, and the post-cast concrete cannot be vibrated. The large-scale use of self-compacting concrete in actual projects is very costly. Summary of the Invention

[0004] In order to overcome the shortcomings of the above-mentioned existing connection node structure of the vertical and horizontal walls of the composite shear wall with openings, the purpose of the present invention is to provide a connection node structure with reinforcement on the side of the vertical and horizontal walls of the composite shear wall with openings. At the connection node position of the vertical and horizontal walls of the composite shear wall with openings, the steel bars extending from the side of the precast wall with openings are connected to the vertical post-cast section. No special horizontal connecting steel bars are required in the cavity of the precast wall with openings. The problem of mutual interference between the horizontal connecting steel bars and the vertical steel bars and additional connecting steel bars of the edge components in the cavity of the precast wall with openings in the existing structure can be avoided. The vibration space during the pouring of post-cast concrete in the cavity of the edge component position of the precast wall with openings can be guaranteed, which is beneficial to the quality control of the post-cast concrete at the edge component position of the precast wall with openings, ensures the construction quality of the key stress-bearing parts of the structure, and improves the seismic performance of the structure.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A reinforced connection node structure for the longitudinal and transverse side walls of a composite shear wall with an opening, mainly comprising a precast wall 1 with an opening, a precast wall 2 without an opening, and a vertical post-cast section 3. The precast wall 1 with an opening and the precast wall 2 without an opening each comprise two layers of precast concrete wall panels 14, with a cavity 15 formed between the two precast concrete wall panels 14. The structure is characterized in that a precast wall edge component area 11 is provided on one side of the opening of the precast wall 1 with an opening and is directly connected to the vertical post-cast section 3. The precast wall edge component hoop of the precast wall 1 with an opening is provided on the other side of the opening of the precast wall The reinforcement 116 adopts a composite stirrup. The open stirrup 113 of the composite stirrup is bent at the end of the precast wall 1 with an opening and extends into the vertical post-cast section 3 through the cavity 15. With the help of the extended section of the open stirrup 113, the connection between the precast wall 1 with an opening and the vertical post-cast section 3 at the connection node of the vertical and horizontal walls is realized. There is no need to arrange horizontal connecting steel bars in the cavity 15 of the precast wall 1 with an opening, avoiding the problem of mutual interference between the horizontal connecting steel bars and the vertical steel bars and additional connecting steel bars of the edge components in the cavity of the precast wall with an opening in the existing structure.

[0007] The open end of the open stirrup 113 is located in the vertical post-cast section 3, and extends from the inner wall of the precast concrete wall panel 14 into the cavity 15 on the inner side of the side end of the precast wall 1 with an opening, and extends into the vertical post-cast section 3 through the cavity 15, rather than directly extending into the vertical post-cast section 3 from the side of the precast concrete wall panel 14. This can achieve the goal of not having holes in the side mold during the precast wall production process, which is beneficial to the standardization and generalization of the precast wall mold, and can avoid the alignment problem between the open stirrup 113 and the side mold, thereby improving the production efficiency of the precast wall; a hook is provided at the end of the open stirrup 113 located in the vertical post-cast section 3 to enhance its anchoring performance in the vertical post-cast section.

[0008] In the precast concrete wall panel 14 of the precast wall edge member area 11 away from the vertical post-cast section 3, vertical stress-bearing steel bars 111 of the precast wall edge member are arranged, and vertical structural steel bars 112 of the precast wall edge member are arranged near the bending position of the open stirrups 113. Double rows of additional connecting steel bars 115 of the vertical stress-bearing steel bars of the precast wall edge member are arranged at the floor position of the cavity 15 and overlapped and connected with the vertical stress-bearing steel bars 111 of the upper and lower layers of the precast wall edge member; or the vertical structural steel bars 112 of the precast wall edge member are arranged only in the precast wall edge member area 11 to form a steel skeleton together with the open stirrups 113 and the precast wall edge member tension bars 114, and a single row of large-diameter vertical stress-bearing steel bars 117 of the precast wall edge member area 11 is arranged in the cavity 15 of the precast wall edge member area 11. The large-diameter vertical stress-bearing steel bars 117 of the edge member run through the cavity 15 from top to bottom and are arranged along the center line of the wall thickness to participate in the structural stress calculation.

[0009] The total reinforcement area of ​​the vertical stress-bearing steel bars 111 of the prefabricated wall edge members and the vertical stress-bearing steel bars 117 of the large-diameter edge members meet the requirements for the bending bearing capacity verification of the shear wall, or replace multiple vertical reinforcement bars of the edge members of the traditional shear wall according to the principle of equal area replacement of steel bars of the same strength grade, or meet the minimum reinforcement ratio requirements of the current specifications for the vertical reinforcement bars of the edge members; the upper and lower layers of the large-diameter edge member vertical stress-bearing steel bars 117 are connected by steel bar joints 32, and the steel bar joints 32 are arranged at the same height or staggered at a certain distance.

[0010] Horizontal distribution steel bars 121 are arranged in the precast wall 2 without openings, wherein: the end of the horizontal distribution steel bars 121 close to the vertical post-cast section 3 does not extend out, and the precast wall 2 without openings and the vertical post-cast section 3 are connected by means of horizontal connecting steel bars 35 passed through the cavity 15 thereof; or, the end of the horizontal distribution steel bars 121 close to the vertical post-cast section 3 is bent at the end of the precast wall 2 without openings and then extends into the vertical post-cast section 3 through the cavity 15, and the connection between the precast wall 2 without openings and the vertical post-cast section 3 at the connection node of the vertical and horizontal walls is achieved by means of the bent and extended horizontal distribution steel bars 124, and the horizontal connecting steel bars 35 are not arranged in the cavity 15. At this time, the edge component area of ​​the wall limb on the side where the precast wall 2 without openings is located is all made of cast-in-place edge components.

[0011] The edge component area of ​​the wall limb on the side where the prefabricated wall 2 without openings is located is entirely made of cast-in-situ edge components. In this case, the prefabricated wall 2 without openings does not have a prefabricated wall edge component area 11; or, the edge component area of ​​the wall limb on the side where the prefabricated wall 2 without openings is realized by combining the prefabricated wall edge component area 11 and the vertical post-casting section 3. In this case, the width of the vertical post-casting section 3 is equal to the wall thickness, and the prefabricated wall edge component area 11 is set at the end of the prefabricated wall 2 without openings. The prefabricated wall edge component area 11 is configured not to extend out of the prefabricated wall limb. The small-diameter precast wall edge component vertical structural steel bars 112 of the opening precast wall 2 are not equipped with ordinary-sized precast wall edge component vertical force-bearing steel bars 111. Precast wall edge component stirrups 116 or precast wall edge component tension bars 114 are equipped to form stirrup restraints on the concrete in the precast wall edge component area 11. A single row of additional connecting steel bars 118 of the precast wall edge component vertical structural steel bars are arranged at the floor position of the cavity 15 and overlapped with the upper and lower layers of precast wall edge component vertical structural steel bars 112.

[0012] When the prefabricated wall edge component area 11 is set at the end of the prefabricated wall 2 without openings, the vertical steel bars of the edge components originally arranged in the prefabricated wall edge component area 11 are concentrated in the vertical post-cast section 3. The total area of ​​the vertical steel bars 31 of the vertical post-cast section edge components and the vertical structural steel bars 112 of the prefabricated wall edge components meet the requirements for the shear wall bending bearing capacity verification, or replace multiple vertical steel bars of the edge components of the traditional shear wall according to the principle of equal area replacement of steel bars of the same strength grade, or meet the minimum reinforcement ratio requirements of the current specifications for the vertical steel bars of the edge components; at this time, the vertical steel bars 31 of the vertical post-cast section edge components are connected by steel bar joints 32, and the steel bar joints 32 are arranged at the same height or staggered at a certain distance.

[0013] The diameter of the large-diameter edge member vertical stress-bearing steel bars 117 is not less than 14 mm; the diameter of the precast wall edge member vertical structural steel bars 112 is not greater than 10 mm, and they are arranged in the precast concrete wall panel 14, and the number of them is set according to the range of the precast wall edge member area 11; when the length of the precast wall edge member area 11 is not greater than 300 mm, 4 precast wall edge member vertical structural steel bars 112 are set; when the length of the precast wall edge member area 11 is between 300 and 600 mm, 6 precast wall edge member vertical structural steel bars 112 are set.

[0014] The horizontal connecting steel bars 35 are passed between the vertical post-cast section 3 and the prefabricated wall 2 without openings. The diameter is not less than the diameter of the horizontal distribution steel bars 121 in the prefabricated wall 2 without openings, and the vertical spacing is not greater than the spacing of the horizontal distribution steel bars 121.

[0015] In the bottom overlap section 17 of the vertical distribution steel bars of the prefabricated wall in the cavity 15, the horizontal connecting steel bars 35 are U-shaped steel bars, the open ends of which extend into the prefabricated wall 2 without openings, and the closed ends are tied and positioned with the stirrups 33 of the vertical post-cast section edge components; in the section 18 outside the bottom overlap section of the vertical distribution steel bars of the prefabricated wall in the cavity 15, the horizontal connecting steel bars 35 are closed ring steel bars, U-shaped steel bars with a hook at the open end, or U-shaped steel bars.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention uses the open stirrups extending from the precast wall with the opening to achieve the connection between the precast wall with the opening and the vertical post-cast section at the connection node of the vertical and horizontal walls. No special horizontal connecting steel bars are required to be arranged in the cavity of the precast wall with the opening, which can avoid the problem of interference between the horizontal connecting steel bars and the vertical steel bars and additional connecting steel bars of the edge components in the cavity of the precast wall with the opening in the existing structure, and facilitates the vibration of the post-cast concrete in the cavity of the edge component area of ​​the precast wall.

[0018] (2) The open stirrups of the present invention do not extend directly from the side of the precast concrete wall panel, which can achieve the goal of not opening holes in the side mold during the precast wall production process, which is conducive to the standardization and generalization of the precast wall mold, and can avoid the problem of alignment between the open stirrups of the precast wall edge components and the side mold, thereby improving the production efficiency of the precast wall.

[0019] (3) There is no need to lay special horizontal connecting steel bars in the cavity of the prefabricated wall with openings of the present invention, so the amount of steel bars used is small and the amount of steel bars tied on site is small, which can reduce certain costs.

[0020] (4) The size of the vertical post-cast section at the connection node of the vertical and horizontal walls of the present invention can be controlled to be equal to the thickness of the wall, the range of the vertical post-cast section is significantly reduced, and the vertical steel bars, stirrups and horizontal connecting steel bars in the vertical post-cast section are simple in structure. The efficiency of tying the steel bars in the vertical post-cast section is high and the amount of on-site formwork is small, which can greatly improve the on-site construction efficiency.

[0021] (5) In the prefabricated wall with openings of the present invention, large-diameter vertical steel bars passing through the cavity can be used to avoid indirect overlap of the vertical steel bars of the edge components, which helps to control the amount of vertical steel bars used in the edge components. In addition, the mechanical connection technology of the steel bars is mature and has good force transmission performance, which can ensure the seismic performance of the wall under large deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a three-dimensional schematic diagram of a typical structure in which the present invention is applied to an L-shaped node of a composite shear wall structure, where one side of the precast wall is a precast wall with an opening, wherein the vertical reinforcement of the edge member of the precast wall with an opening is connected by indirect lap joints.

[0023] Figure 2 for Figure 1 3D schematic diagram of a precast wall with an opening in the middle.

[0024] Figure 3 for Figure 2 Schematic diagram of the CC cross section.

[0025] Figure 4 for Figure 1 The diagram shows the AA cross-section of the bottom overlap section of the vertical distribution reinforcement of the precast wall in the L-shaped connection node.

[0026] Figure 5 for Figure 1 The schematic diagram of the construction of the horizontal joint in the precast edge component area is shown, in which two rows of additional connecting steel bars of the vertical stress-bearing steel bars of the precast wall edge component are arranged in the cavity and overlapped and connected with the vertical stress-bearing steel bars of the precast wall edge component.

[0027] Figure 6 for Figure 1 The diagram shows the BB section of the section outside the bottom overlap of the vertical distribution reinforcement of the precast wall in the L-shaped connection node, where the horizontal connection reinforcement adopts ring-shaped closed reinforcement.

[0028] Figure 7 for Figure 1 The diagram shows the BB cross-section of the section outside the bottom overlap of the vertical distribution reinforcement of the precast wall in the L-shaped connection node, where the horizontal connection reinforcement is U-shaped reinforcement with a hook at the open end.

[0029] Figure 8 for Figure 1 The diagram shows the BB section of the section outside the bottom overlap of the vertical distribution reinforcement of the precast wall at the L-shaped connection node, where the horizontal connection reinforcement is U-shaped reinforcement.

[0030] Figure 9 for Figure 1 The improved version 1 of the L-shaped connection node shown in the figure is that large-diameter vertical stress-bearing steel bars of the edge member are arranged in the cavity of the edge member of the precast wall with the opening.

[0031] Figure 10 for Figure 9 3D schematic diagram of a precast wall with an opening in the middle.

[0032] Figure 11 for Figure 10 Schematic diagram of the EE cross section.

[0033] Figure 12 for Figure 9 The diagram shows the DD cross-section of the bottom overlap section of the vertical distribution reinforcement of the precast wall in the L-shaped connection node.

[0034] Figure 13 、 Figure 14 This is the second improved version of the present invention, wherein the horizontally distributed steel bars of the prefabricated wall on the side without the opening are bent and extended.

[0035] Figure 15 、 Figure 16 This is the third improved version of the present invention, in which only a small-sized vertical post-cast section with a width equal to the wall thickness is provided.

[0036] Figure 17 for Figure 15 、 Figure 16 Schematic diagram of the lap connection structure of the middle vertical distribution steel bar 122 and the double-row additional connecting steel bars 123 of the vertical distribution steel bars.

[0037] Figure 18 、 Figure 19 for Figure 15 、 Figure 16 An improved type of open stirrup, in which the open stirrups of the precast wall edge components extend into the end of the vertical post-cast section and are provided with hooks.

[0038] Figure 20 This is a schematic diagram of an existing structure in which an L-shaped node of a composite shear wall structure is used and one side of the prefabricated wall is a prefabricated wall with an opening, which is a comparative example of the present invention.

[0039] In the figure: 1- precast wall with opening; 2- precast wall without opening; 3- vertical post-cast section; 11- precast wall edge component area; 12- precast wall opening area; 13- precast wall body area; 14- precast concrete wall panel; 15- cavity; 16- steel truss; 17- precast wall vertical distribution steel bar bottom overlap section; 18- precast wall vertical distribution steel bar bottom overlap section; 111- precast wall edge component vertical stress reinforcement; 112- precast wall edge component vertical structural reinforcement; 113- open stirrups; 114- precast wall edge component tie reinforcement; 115- precast wall edge component vertical stress reinforcement double row additional connecting reinforcement; 116- precast wall edge structural reinforcement 117-vertical stress reinforcement for large-diameter edge members; 118-single-row additional connecting reinforcement for vertical structural reinforcement of precast wall edge members; 121-horizontal distribution reinforcement; 122-vertical distribution reinforcement; 123-double-row additional connecting reinforcement for vertical distribution reinforcement; 124-bent and extended horizontal distribution reinforcement; 31-vertical reinforcement for edge members of post-cast vertical sections; 32-rebar joint; 33-stirrups for edge members of post-cast vertical sections; 34-tension reinforcement for edge members of post-cast vertical sections; 35-horizontal connecting reinforcement; 36-installation joint; 37-horizontal connecting reinforcement on the opening side; 41-horizontal joint at the bottom of precast wall; 42-horizontal post-cast strip at the top of precast wall; 43-precast floor slab. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0041] like Figures 1 to 19 As shown, the present invention discloses a structure for connecting longitudinal and transverse walls of a composite shear wall with an opening, and a reinforcement connection node structure for connecting longitudinal and transverse walls of a composite shear wall structure. The structure mainly comprises a precast wall 1 with an opening, a precast wall 2 without an opening, and a vertical post-cast section 3. The precast wall 1 with an opening and the precast wall 2 without an opening each comprise two layers of precast concrete wall panels 14, with a cavity 15 formed between the two precast concrete wall panels 14. The precast wall 1 with an opening comprises a precast wall opening area 12, while the precast wall 2 without an opening comprises a precast wall body area 13. The present invention is optimized and improved in that the wall limb on one side of the precast wall opening area 12 of the precast wall 1 with an opening is shorter, typically less than 800 mm, and therefore a precast wall edge member area 11 directly connected to the vertical post-cast section 3 is required at this end.

[0042] The precast wall 1 with an opening utilizes composite stirrups (116) for its edge member. These stirrups consist of open stirrups (113) and tie bars (114) for the precast wall. The open ends of the open stirrups (113) are located within the vertical post-cast section (3), while the closed ends are located within the precast wall edge member region (11). These stirrups are bent near the end of the precast wall 1 with an opening and extend into the vertical post-cast section (3). This connection between the precast wall 1 with an opening and the vertical post-cast section (3) is achieved through the use of the open stirrups (113). This eliminates the need for dedicated horizontal connecting steel bars within the cavity (15) of the precast wall 1 with an opening, thus avoiding the problem of interference between the horizontal connecting steel bars and the vertical reinforcement of the edge member within the cavity (as in conventional structures). The open stirrups 113 can further extend from the inner wall of the precast concrete wall panel 14 on the inner side of the side of the precast wall 1 with the opening into the cavity 15, and then extend out of the precast wall 1 with the opening and into the vertical post-cast section 3, rather than directly extending from the side of the precast concrete wall panel 14. This can achieve the goal of not having holes in the side molds during the precast wall production process, which is beneficial to the standardization and generalization of the precast wall molds, and can avoid the problem of alignment of the open stirrups 113 and the side molds during the precast wall production process, thereby improving the production efficiency of the precast wall.

[0043] Furthermore, a 90° or 135° hook may be provided at the end of the open stirrup 113 extending into the vertical post-casting section 3 to enhance its anchoring performance within the vertical post-casting section 3 .

[0044] Accordingly, the vertical reinforcement of the precast wall edge member area 11 of the precast wall 1 with an opening can adopt two structures. First, the vertical reinforcement of the edge member can be connected by overlapping. The precast wall edge member vertical stress-bearing reinforcement 111 is arranged in the precast concrete wall panel 14 away from the vertical post-cast section 3 in the precast wall edge member area 11. Double rows of additional connecting reinforcement bars 115 of the precast wall edge member vertical stress-bearing reinforcement are arranged at the floor position of the cavity 15 and overlapped with the upper and lower layers of the precast wall edge member vertical stress-bearing reinforcement 111. The double rows of additional connecting reinforcement bars 115 of the precast wall edge member vertical stress-bearing reinforcement do not pass through the cavity 15 from top to bottom, the length meets the reinforcement overlap requirements, and the diameter should not be smaller than the precast wall edge member vertical stress-bearing reinforcement 111. The precast wall edge member vertical structural reinforcement bars 112 are arranged at the bending position of the opening stirrups 113. They do not extend out of the precast wall, do not participate in the structural stress, and the diameter should not be greater than 10mm.

[0045] Secondly, the vertical reinforcement structure of the precast wall edge member area 11 of the precast wall with an opening 1 can also be consistent with the patent applied for by the applicant, entitled "Compounding hidden columns and precast walls with large-diameter edge member vertical reinforcements arranged in the cavity" (the precast wall includes a compound hidden column area and a wall body area. The compound hidden column area adopts the compound hidden columns. The precast concrete wall panels extend to form the wall body area. The compound hidden columns include precast concrete wall panels on both sides. A cavity is formed between the two precast concrete wall panels. Only small-diameter edge member vertical structural reinforcements, edge member stirrups, and edge member tension bars are arranged in the precast concrete wall panels to form a hidden column reinforcement skeleton. The upper and lower ends of the edge member vertical structural reinforcements do not extend out of the precast concrete wall panels and do not participate in the structural force calculation; a single row of large-diameter vertical reinforcements are arranged in the cavity as edge member vertical stress reinforcements, which participate in the structural force calculation. The upper and lower layers of edge member vertical stress reinforcements are directly connected in the cavity using reinforcement joints, and the concrete in the cavity is poured on site). Only small-diameter precast wall edge member vertical structural steel bars 112 (not involved in structural force calculations, and diameter should not be greater than 10 mm) are configured within the precast concrete wall panels 14 of the precast wall edge member area 11. Ordinary-sized edge member vertical steel bars are not configured. These bars, together with the opening stirrups 113 and precast wall edge member tie bars 114, form a steel skeleton. A single row of large-diameter edge member vertical stress-bearing steel bars 117 is configured within the cavity 15, near the precast wall opening area 12. These bars run vertically through the cavity 15 and are arranged along the centerline of the wall thickness, participating in structural force calculations. When the calculated reinforcement area for the edge member vertical steel bars is large, configuring two large-diameter edge member vertical stress-bearing steel bars 117 will result in a larger steel bar diameter. Three or more edge member vertical stress-bearing steel bars 117 can be configured within the cavity 15 to control their diameter.

[0046] In particular, precast wall edge member vertical reinforcement bars 111 and large-diameter edge member vertical reinforcement bars 117 are the edge member vertical reinforcement bars of precast wall edge member region 11 of precast wall 1 with openings. Their total reinforcement area should meet the requirements for shear wall bending capacity verification, or replace multiple edge member vertical reinforcement bars of a traditional shear wall according to the principle of equal area replacement of steel bars of the same strength grade, or meet the minimum reinforcement ratio requirements for edge member vertical reinforcement in current specifications. Upper and lower layers of large-diameter edge member vertical reinforcement bars 117 are connected by reinforcement joints 32, which can be arranged at the same height or staggered a certain distance apart.

[0047] In the present invention, the structure of the prefabricated wall 2 without openings has two forms: one with the horizontally distributed steel bars 121 extending out and the other without extending out.

[0048] When horizontal distribution reinforcement 121 is not extended, the precast wall 2 without openings and the vertical post-cast section 3 are connected via horizontal connecting reinforcement 35 extending through cavity 15. The edge component area on the side of the wall limb where the precast wall 2 without openings is located can be entirely cast-in-place edge components. In this case, the precast wall 2 without openings does not have precast wall edge component area 11. The precast wall 2 without openings has the same structure as a conventional composite shear wall. The scope of the vertical post-cast section 3 should include the edge component range of the wall limb on the side where the precast wall 2 without openings is located as recommended by current specifications.

[0049] The edge component area of ​​the wall limb on the side where the prefabricated wall 2 without openings is located can also be realized by combining the prefabricated wall edge component area 11 and the vertical post-cast section 3. At this time, the width of the vertical post-cast section 3 is equal to the wall thickness. At this time, an installation seam 36 should be set between the prefabricated wall 1 with openings and the prefabricated wall 2 without openings. The width of the installation seam 36 should not be less than 20 mm to ensure the efficiency and accuracy of the prefabricated wall installation, and at the same time it is used to penetrate the template fixing tooling of the vertical post-cast section 3. A prefabricated wall edge component area 11 is set at the end of the prefabricated wall 2 without openings. The structure of the prefabricated wall edge component area 11 is consistent with the aforementioned patent. Small-diameter prefabricated wall edge component vertical structural steel bars 112 that do not extend out of the prefabricated wall are arranged in the prefabricated wall edge component area 11. Ordinary specifications of prefabricated wall edge component vertical force-bearing steel bars 111 are not arranged. Prefabricated wall edge component stirrups 116 or prefabricated wall edge component tension bars 114 are arranged to form stirrup constraints on the concrete of the prefabricated wall edge component area 11. A single row of additional connecting steel bars 118 of prefabricated wall edge component vertical structural steel bars are arranged at the floor position of the cavity 15 and overlapped and connected with the upper and lower layers of prefabricated wall edge component vertical structural steel bars 112. The edge member vertical reinforcements originally arranged in the precast wall edge member area 11 are concentrated in the small-sized vertical post-cast section 3. The total area of ​​the vertical post-cast section edge member vertical reinforcements 31 and the precast wall edge member vertical structural reinforcements 112 should meet the shear wall bending bearing capacity verification requirements, or replace multiple edge member vertical reinforcements of the traditional shear wall according to the principle of equal area replacement of reinforcements of the same strength grade, or meet the current specification for the minimum reinforcement ratio requirements of the edge member vertical reinforcements. At this time, the diameter of the vertical post-cast section edge member vertical reinforcements 31 is often large, and it is advisable to use mechanical connection of reinforcements. The reinforcement joints 32 can be arranged at the same height or staggered at a certain distance. Straight threaded joints should preferably be used as reinforcement joints 32. Under the premise of technical reliability, other forms of reinforcement joints can also be used.

[0050] When the length of the precast wall edge member area 11 of the precast wall 2 without openings is no longer than 300mm, four precast wall edge member vertical structural steel bars 112 may be installed; when the length of the precast wall edge member area 11 is between 300 and 600mm, six precast wall edge member vertical structural steel bars 112 may be installed. The diameter of the large-diameter edge member vertical stress-bearing steel bars 117 should not be less than 14mm; the diameter of the precast wall edge member vertical structural steel bars 112 should not be greater than 10mm. They are installed within the precast concrete wall panel 14, and the number of precast wall edge member vertical structural steel bars 112 is determined based on the size of the precast wall edge member area 11. The four or six precast wall edge member vertical structural steel bars 112 can be overlapped and connected to the precast wall edge member vertical structural steel bars using one or two single-row additional vertical connecting steel bars 118, respectively.

[0051] In particular, the diameter of the horizontal connecting reinforcement 35 between the precast wall 2 without openings and the vertical post-cast section 3 should not be smaller than the diameter of the horizontal distribution reinforcement 121 within the precast wall 2 without openings, and the vertical spacing between them should not be greater than the spacing between the horizontal distribution reinforcement 121. In the section where the vertical reinforcement overlaps at the bottom of the cavity, the horizontal connecting reinforcement 35 should preferably be U-shaped, with the open end extending into the precast wall 2 without openings and the closed end secured to the stirrups 33 at the edge of the vertical post-cast section. In sections other than the section where the vertical reinforcement overlaps at the bottom of the cavity, the horizontal connecting reinforcement 35 can be closed loop reinforcement, U-shaped reinforcement with a hook at the open end, or U-shaped reinforcement.

[0052] When the horizontal distribution steel bars 121 do not extend out, the structure of the open stirrups 113 of the prefabricated edge component of the prefabricated wall 1 with an opening can be referred to. The end of the horizontal distribution steel bar 121 close to the vertical post-cast section 3 is bent at the end of the prefabricated wall 2 without an opening and then extends into the vertical post-cast section 3 through the cavity 15. With the help of the bent and extended horizontal distribution steel bars 124, the connection between the prefabricated wall 2 without an opening and the vertical post-cast section 3 at the connection node of the vertical and horizontal walls is realized. The horizontal connecting steel bars 35 do not need to be arranged in the cavity 15. At this time, the edge component area of ​​the wall limb on the side where the prefabricated wall 2 without an opening is located can all be made of cast-in-place edge components.

[0053] In the present invention, the diameter and structure of the stirrups or tension bars in the prefabricated wall edge component area 11 and the vertical post-cast section 3 should meet the relevant provisions of the current standards "Code for Seismic Design of Buildings" and "Technical Code for Concrete Structures of High-rise Buildings" to ensure the stirrup restraint effect of the concrete.

[0054] In the present invention, the precast concrete wall panels 14 on both sides of the precast wall with openings 1 and the precast wall without openings 2 can be connected by steel trusses 16, or by concrete longitudinal ribs or flat steel welded meshes. That is, the present invention can be used for the longitudinal and transverse wall connection nodes of existing double-sided composite shear walls, SPCS steel welded mesh composite shear walls and other types of composite shear walls.

[0055] Figures 1 to 8The figure shows a preferred embodiment of the present invention, which is used for L-shaped joints of composite shear wall structures. One side of the vertical post-cast section 3 is a prefabricated wall 1 with an opening, and the other side is a prefabricated wall 2 without an opening. Figure 2 and Figure 3 As shown, the precast edge member stirrups of the precast wall with opening 1 use combined stirrups, which are composed of open stirrups 113 and precast wall edge member tie bars 114. The open stirrups 113 are bent near the end of the precast wall, extending from the inner wall of the precast concrete wall panel 14 into the cavity 15 on the inner side of the precast wall, and then extending out of the precast wall with opening 1. Figure 1 、 Figure 4 As shown, the open stirrups 113 extend into the vertical post-cast section 3 to achieve the connection between the precast wall 1 with the opening and the vertical post-cast section 3. No special horizontal connecting steel bars need to be arranged in the cavity 15 of the precast wall 1 with the opening.

[0056] like Figures 1 to 4 , vertical stress-bearing reinforcement bars 111 of the precast wall edge member are arranged in the precast concrete wall panel 14 of the precast wall edge member area 11 of the precast wall 1 with an opening, and vertical structural reinforcement bars 112 of the precast wall edge member with a diameter not greater than 10 mm are arranged at the bending position of the opening stirrups 113. The vertical stress-bearing reinforcement bars 111 and the vertical structural reinforcement bars 112 of the precast wall edge member do not protrude from the precast wall. Figure 5 As shown, double rows of additional connecting steel bars 115 for the vertical stress-bearing reinforcement of the precast wall edge members are arranged at the floor position of the cavity 15 and overlapped with the vertical stress-bearing reinforcement of the upper and lower layers of precast wall edge members 111. The double rows of additional connecting steel bars 115 for the vertical stress-bearing reinforcement of the precast wall edge members do not pass through the cavity 15 from top to bottom, and their length meets the requirements for overlapped reinforcement. Their diameter should not be smaller than the vertical stress-bearing reinforcement 111 of the precast wall edge members. The vertical stress-bearing reinforcement 111 of the precast wall edge members participates in structural stress, and their total reinforcement area should meet the requirements for the bending bearing capacity verification of the shear wall, or replace multiple vertical reinforcements of the edge members of the traditional shear wall according to the principle of equal area replacement of steel bars of the same strength grade, or meet the minimum reinforcement ratio requirements for vertical reinforcement of edge members in the current specifications. The vertical structural reinforcement 112 of the upper and lower layers of precast wall edge members are not connected and do not participate in structural stress. Figure 5 The height of the horizontal joint 41 at the bottom of the middle prefabricated wall should not be less than 50 mm, and the connection between the prefabricated wall and the prefabricated floor slabs 43 on both sides is achieved through the horizontal post-cast strip 42 at the top of the prefabricated wall.

[0057] The edge member area of ​​the wall limb on the side of the precast wall 2 without openings is entirely cast-in-place. That is, the vertical post-cast section 3 should encompass the edge member area of ​​the wall limb on the side of the precast wall 2 without openings as recommended by current specifications. The horizontal distribution steel bars 121 of the precast wall 2 without openings do not extend outward. Horizontal connecting steel bars 35 are installed within the cavity 15 to connect the precast wall 2 without openings to the vertical post-cast section 3. Their diameter should not be smaller than the diameter of the horizontal distribution steel bars 121 within the precast wall 2 without openings, and their vertical spacing should not be greater than the spacing between the horizontal distribution steel bars 121.

[0058] In particular, if Figure 4 As shown, the horizontal connecting steel bars 35 in the bottom overlap section 17 of the vertical distribution steel bars of the precast wall should be U-shaped steel bars, with the open end extending into the precast wall 2 without openings, and the closed end tied and positioned with the stirrups 33 of the vertical post-cast section edge member. The double-row additional connecting steel bars 123 of the vertical distribution steel bars within the range of the horizontal connecting steel bars 35 should be arranged on the inner side of the horizontal connecting steel bars 35; Figures 6 to 8 As shown, the horizontal connecting steel bars 35 in the section 18 other than the bottom overlap of the vertical distribution steel bars of the prefabricated wall can be closed ring steel bars, U-shaped steel bars with hooks at the open ends, or U-shaped steel bars.

[0059] The diameter and construction of the edge member stirrups 33 and tie bars 34 within the vertical post-cast section 3 must comply with the relevant provisions of the current "Code for Seismic Design of Buildings" and the "Technical Code for Concrete Structures of High-Rise Buildings." The total area of ​​the vertical reinforcement 31 within the vertical post-cast section edge member must meet the requirements for shear wall flexural capacity verification and the current code requirements for the minimum reinforcement ratio of vertical reinforcement for edge members. The vertical reinforcement 31 of the upper and lower vertical post-cast section edge members should be connected using reinforcement joints 32. These joints can be arranged at the same height or staggered. For smaller diameters, a tied lap joint can also be used. Attention should be paid to the relative relationship between the edge member stirrups 33 within the vertical post-cast section 3 and the precast wall 1 with openings during installation.

[0060] The on-site construction process of the preferred embodiment 1 is as follows: install the precast wall 1 with openings and the precast wall 2 without openings, and adjust their verticality and horizontality; use the protruding section of the precast wall opening stirrups 113 to tie the vertical post-cast section edge member stirrups 33, pass the vertical post-cast section edge member vertical steel bars 31 and complete the steel bar joint connection; tie the vertical post-cast section inner edge member tension bars 34, pass the horizontal connecting steel bars 35 and tie and position them with the vertical post-cast section edge member stirrups 33; support the vertical post-cast section 3 formwork, and arrange the double rows of additional connecting steel bars 115 of the vertical load-bearing steel bars of the precast wall edge member with openings and the double rows of additional connecting steel bars 123 of the vertical distribution steel bars of the precast wall 2 without openings at the corresponding position above the precast wall cavity 15; pour the post-cast concrete in the cavity 15 and the vertical post-cast section 3 to achieve the connection between the precast wall 1 with openings and the precast wall 2 without openings, and then maintain and remove the formwork.

[0061] Figures 9 to 12 This is an improved version of the preferred embodiment 1 of the present invention. Based on the preferred embodiment 1, the vertical reinforcement structure of the edge component area 11 of the prefabricated wall 1 with an opening is optimized and improved. Its structure is consistent with the patent application of "Compounded concealed column and prefabricated wall with large diameter edge component vertical reinforcement configured in the cavity". Figure 10 and Figure 11 As shown, the precast concrete wall panel 14 of the precast wall edge component area 11 of the precast wall with opening 1 is equipped with precast wall edge component vertical structural steel bars 112 with a diameter not greater than 10 mm, and no ordinary specification edge component vertical steel bars are equipped. Together with the opening stirrups 113 and the precast wall edge component tie bars 114, a steel skeleton is formed. Figure 9 、 Figure 12 As shown, a single row of large-diameter vertical reinforcement bars 117 for edge members is placed within cavity 15 near the precast wall opening 12. These bars extend vertically through cavity 15 and are arranged along the centerline of the wall thickness, participating in the structural force calculation. If the calculated reinforcement area for the edge member vertical reinforcement is large, installing two large-diameter vertical reinforcement bars 117 will result in a larger diameter. Therefore, three or more vertical reinforcement bars 117 can be placed within cavity 15 to control their diameter.

[0062] Large-diameter vertical reinforcement bars 117 are used for the edge member reinforcement of the precast wall edge member region 11 of the precast wall 1 with an opening. Their total reinforcement area should meet the requirements for shear wall flexural capacity verification, or replace multiple vertical reinforcement bars in a traditional shear wall according to the principle of equal area replacement of bars of the same strength grade, or meet the minimum reinforcement ratio requirements for vertical reinforcement in edge members as specified in current specifications. The large-diameter vertical reinforcement bars 117 of the upper and lower precast wall layers are connected by reinforcement joints 32. These joints 32 can be arranged at the same height or staggered.

[0063] The on-site construction process for Improved Example 1 is as follows: The large-diameter vertical stress-bearing reinforcement bars 117 of the current layer of prefabricated wall 1 with openings are connected to the large-diameter vertical stress-bearing reinforcement bars 117 of the lower layer using reinforcement joints 32; the prefabricated wall 1 with openings and the prefabricated wall 2 without openings are installed, and their verticality and horizontality are adjusted, taking care to prevent the large-diameter vertical stress-bearing reinforcement bars 117 of the edge members from interfering with the fall of the prefabricated wall 1 with openings; the subsequent construction process is essentially the same as that of Preferred Embodiment 1. The large-diameter vertical stress-bearing reinforcement bars 117 of the current layer of prefabricated wall 1 with openings can also be installed after the prefabricated wall 1 with openings is installed. In this case, the structure and construction sequence of the reserved installation holes at the bottom of the prefabricated wall 1 with openings refer to my patent application entitled "Composite Concealed Column and Prefabricated Wall with Large-Diameter Vertical Stiffeners Arranged in a Cavity."

[0064] Figure 13、 Figure 14 The second modification of the present invention is shown. Based on the preferred embodiment and modified embodiment, with reference to the structure of the opening stirrups 113 of the precast edge member of the precast wall 1 with openings, the horizontal distribution reinforcement of the precast wall 2 without openings is bent at the end of the precast wall and then extended through the precast wall cavity 15 into the vertical post-cast section 3. The bent and extended horizontal distribution reinforcement 124 connects the precast wall 2 without openings to the vertical post-cast section 3. The horizontal connecting reinforcement 35 is not required to be arranged in the cavity 15. The edge member area of ​​the wall limb on the side where the precast wall 2 without openings is located is preferably entirely cast-in-place. The on-site construction sequence of modified embodiment 2 is basically the same as that of preferred embodiment 1 and modified embodiment 1.

[0065] Figures 15 to 17 The third improved embodiment of the present invention is shown. Based on the preferred embodiment and improved embodiment, the structure of the precast wall 2 without openings is optimized and improved. The edge member area of ​​the wall limb on the side of the precast wall 2 without openings is formed by combining the precast wall edge member area 11 and the vertical post-cast section 3. The width of the vertical post-cast section 3 is equal to the wall thickness, significantly reducing its size. An installation joint 36 is provided between the precast wall 1 with openings and the precast wall 2 without openings. The width of the installation joint 36 should not be less than 20 mm to ensure efficient and accurate installation of the precast wall. It also serves as a tool for inserting the formwork fixing device for the vertical post-cast section 3.

[0066] In order to ensure the bearing performance of the improved three-edge member area, referring to the patent applied by myself entitled "High-efficiency connection node structure of composite shear wall vertical and horizontal walls with concentrated reinforcement of vertical post-cast sections", a precast wall edge member area 11 is set at the end of the precast wall 2 without openings, and a small-diameter precast wall edge member vertical structural steel bar 112 that does not extend out of the precast wall is arranged inside, and precast edge member stirrups 116 or tension bars 114 are arranged to form stirrup restraint effects on the concrete of the precast wall edge member area 11.

[0067] like Figure 17 As shown, a single row of additional connecting steel bars 118 for the vertical structural reinforcement of the precast wall edge member is arranged at the floor level of cavity 15 and overlapped and connected to the vertical structural reinforcement bars 112 of the upper and lower precast wall edge member layers. Also shown are vertical distribution steel bars 122 and double rows of additional connecting steel bars 123 for the vertical distribution steel bars. When the length of the precast wall edge member region 11 of the precast wall 2 without an opening is no greater than 300 mm, four precast wall edge member vertical structural reinforcement bars 112 can be provided; when the length of the precast wall edge member region 111 is between 300 and 600 mm, six precast wall edge member vertical structural reinforcement bars 112 can be provided. The diameter of the precast wall edge member vertical structural reinforcement bars 112 should not be greater than 10 mm. Four or six precast wall edge member vertical structural reinforcement bars 112 can be connected using one or two single rows of additional vertical connecting steel bars 118, respectively.

[0068] The vertical reinforcement of the edge members, originally located in the precast wall edge member area 11, is now concentrated within the small-sized vertical post-cast section 3. The total area of ​​the vertical post-cast section edge member vertical reinforcement 31 and the vertical structural reinforcement 112 of the precast wall edge member should meet the requirements for shear wall flexural bearing capacity verification, or replace multiple vertical reinforcements of the traditional shear wall edge member according to the principle of equal area replacement of steel bars of the same strength grade, or meet the minimum reinforcement ratio requirements for vertical reinforcement of edge members in current specifications. The diameter of the vertical reinforcement 31 of the vertical post-cast section edge member is often large, so mechanical connection of the reinforcement is recommended. The reinforcement joints 32 can be arranged at the same height or staggered a certain distance.

[0069] The on-site construction sequence of Improvement 3 is basically the same as that of Preferred Embodiment 1 and Improvement 1.

[0070] Figure 18 、 Figure 19 This is an improved version of the open stirrup of Improved Type 3. On the basis of Improved Type 3, a 90° or 135° hook is provided at the end of the open stirrup 113 extending into the vertical post-casting section 3 to enhance its anchoring performance in the vertical post-casting section 3.

[0071] Figure 20 They are the existing connection node structures corresponding to the preferred embodiment of the present invention, that is, comparative example 1, in which the horizontal connecting steel bars 37 on the opening side are located inside the double rows of additional connecting steel bars 115 of the vertical stress-bearing steel bars of the prefabricated wall edge member. Figure 20 The comparative example 1 is compared, see Table 1.

[0072] Table 1

[0073]

[0074]

[0075] In summary, the present invention discloses a structure for connecting nodes of longitudinal and transverse walls of a composite shear wall with openings, wherein the stirrups of the prefabricated edge components of the prefabricated wall with openings adopt composite stirrups, and the open stirrups of the composite stirrups are bent and extended into the vertical post-cast section connected to the prefabricated wall through the cavity of the prefabricated wall, and the connection between the prefabricated wall with openings and the vertical post-cast section at the connection node of the longitudinal and transverse walls is achieved with the help of the open stirrups. The present invention does not require the arrangement of special horizontal connecting steel bars in the cavity of the prefabricated wall with openings, which can avoid the problem of interference between the horizontal connecting steel bars and the vertical steel bars and additional connecting steel bars of the edge components in the cavity of the prefabricated wall with openings in the existing structure, and can ensure the vibration space during the pouring of post-cast concrete in the cavity of the edge components of the prefabricated wall with openings; at the same time, the side reinforcement is achieved with the help of the cavity, which can avoid the opening of holes in the side mold of the prefabricated wall, which is conducive to the standardization and generalization of the prefabricated wall mold, and can avoid the problem of alignment between the side reinforcement and the side mold, and can improve the production efficiency of the prefabricated wall.

[0076] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes and substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A longitudinal and transverse side reinforcement connection node structure of a composite shear wall with an opening, comprising a precast wall with an opening (1), a precast wall without an opening (2) and a vertical post-cast section (3), wherein the precast wall with an opening (1) and the precast wall without an opening (2) both comprise two layers of precast concrete wall panels (14), a cavity (15) being formed between the two precast concrete wall panels (14), and characterized in that: A prefabricated wall edge component area (11) is provided on one side of the opening of the prefabricated wall (1) and is directly connected to the vertical post-cast section (3); the prefabricated wall edge component stirrups (116) of the prefabricated wall (1) are composite stirrups; the open stirrups (113) of the composite stirrups are bent at the end of the prefabricated wall (1) and then extended into the vertical post-cast section (3) through the cavity (15); the connection between the prefabricated wall (1) and the vertical post-cast section (3) at the connection node of the vertical and horizontal walls is achieved by means of the extended section of the open stirrups (113); and no horizontal connecting steel bars are required to be arranged in the cavity (15) of the prefabricated wall (1) with the opening. The open end of the open stirrup (113) is located in the vertical post-cast section (3), extends from the inner wall of the precast concrete wall panel (14) into the cavity (15) on the inner side of the side end of the precast wall with the opening (1), and extends into the vertical post-cast section (3) through the cavity (15), rather than directly extending into the vertical post-cast section (3) from the side of the precast concrete wall panel (14); Precast wall edge component vertical stress-bearing steel bars (111) are arranged in a precast concrete wall panel (14) away from a vertical post-cast section (3) in a precast wall edge component area (11) of a precast wall with an opening (1), and precast wall edge component vertical structural steel bars (112) are arranged near a bending position of an opening stirrup (113); or precast wall edge component vertical structural steel bars (112) are arranged only in the precast wall edge component area (11) to form a steel bar skeleton together with the opening stirrup (113) and the precast wall edge component tension bars (114), and a single row of large-diameter edge component vertical stress-bearing steel bars (117) are arranged in a cavity (15) of the precast wall edge component area (11).

2. The structure of connecting nodes with side reinforcement of vertical and horizontal walls of the composite shear wall with openings according to claim 1 is characterized in that: The open stirrup (113) is located in the vertical post-casting section (3) and has a hook at one end to enhance the anchoring performance in the vertical post-casting section.

3. The structure of connecting nodes with side reinforcement of vertical and horizontal walls of the composite shear wall with openings according to claim 1 is characterized in that: In the precast concrete wall panel (14) of the precast wall with an opening (1), vertical stress-bearing steel bars (111) of the precast wall edge member are arranged in a precast concrete wall panel (14) away from the vertical post-cast section (3), and vertical structural steel bars (112) of the precast wall edge member are arranged near the bending position of the opening stirrup (113). Then, double rows of additional connecting steel bars (115) of the vertical stress-bearing steel bars of the precast wall edge member are arranged at the floor position of the cavity (15) and overlapped and connected with the vertical stress-bearing steel bars (111) of the upper and lower precast wall edge member; Only in the precast wall edge component region (11) are precast wall edge component vertical structural steel bars (112) and open stirrups (113) and precast wall edge component tension bars (114) arranged to form a steel skeleton. When a single row of large-diameter edge component vertical stress-bearing steel bars (117) is arranged in the cavity (15) of the precast wall edge component region (11), the large-diameter edge component vertical stress-bearing steel bars (117) pass through the cavity (15) vertically and are arranged along the center line of the wall thickness, participating in the structural stress calculation.

4. The structure of connecting nodes with side reinforcement of vertical and horizontal walls of a composite shear wall with openings according to claim 3 is characterized in that: The total reinforcement area of ​​the prefabricated wall edge member vertical stress-bearing steel bars (111) and the large-diameter edge member vertical stress-bearing steel bars (117) meets the requirements for the bending bearing capacity verification of the shear wall, or replaces multiple edge member vertical stress-bearing steel bars of a traditional shear wall according to the principle of equal area replacement of steel bars of the same strength grade, or meets the minimum reinforcement ratio requirements of the current specifications for edge member vertical stress-bearing steel bars; the upper and lower layers of large-diameter edge member vertical stress-bearing steel bars (117) are connected by steel bar joints (32), and the steel bar joints (32) are arranged at the same height or staggered at a certain distance.

5. The structure of connecting nodes with side reinforcement of vertical and horizontal walls of composite shear walls with openings according to claim 1 is characterized in that: Horizontal distribution steel bars (121) are arranged in the precast wall without openings (2), wherein: one end of the horizontal distribution steel bar (121) close to the vertical post-cast section (3) does not extend out, and the precast wall without openings (2) and the vertical post-cast section (3) are connected by means of horizontal connection steel bars (35) inserted into the cavity (15); or, one end of the horizontal distribution steel bar (121) close to the vertical post-cast section (3) is bent at the end of the precast wall without openings (2) and then extends into the vertical post-cast section (3) through the cavity (15), and the connection between the precast wall without openings (2) and the vertical post-cast section (3) at the connection node of the vertical and horizontal walls is achieved by means of the bent and extended horizontal distribution steel bar (124), and the horizontal connection steel bar (35) is not arranged in the cavity (15). In this case, the edge component area of ​​the wall limb on the side where the precast wall without openings (2) is located is entirely made of cast-in-place edge components.

6. The longitudinal and transverse wall side reinforcement connection node structure of the composite shear wall with openings according to claim 1 or 5, characterized in that: The edge component area of ​​the wall limb on the side where the prefabricated wall (2) without openings is located is entirely made of cast-in-place edge components. In this case, the prefabricated wall edge component area (11) is not provided on the prefabricated wall (2) without openings; or, the edge component area of ​​the wall limb on the side where the prefabricated wall (2) without openings is realized by combining the prefabricated wall edge component area (11) and the vertical post-casting section (3). In this case, the width of the vertical post-casting section (3) is equal to the thickness of the wall. The prefabricated wall edge component area (11) is provided at the end of the prefabricated wall (2) without openings, and the prefabricated wall edge component area (11) is configured not to protrude. The small-diameter precast wall edge member vertical structural steel bars (112) of the precast wall without openings (2) are not provided with ordinary-sized precast wall edge member vertical stress-bearing steel bars (111). Precast wall edge member stirrups (116) or precast wall edge member tension bars (114) are provided to form stirrup restraints on the concrete of the precast wall edge member area (11). A single row of additional connecting steel bars (118) of the precast wall edge member vertical structural steel bars are arranged at the floor position of the cavity (15) and overlap-connected with the upper and lower precast wall edge member vertical structural steel bars (112).

7. The structure of connecting nodes with side reinforcement of vertical and horizontal walls of a composite shear wall with openings according to claim 6, characterized in that: When the prefabricated wall edge component area (11) is provided at the end of the prefabricated wall (2) without openings, the edge component vertical reinforcement originally arranged in the prefabricated wall edge component area (11) is concentratedly arranged in the vertical post-casting section (3), and the total area of ​​the vertical post-casting section edge component vertical reinforcement (31) and the prefabricated wall edge component vertical structural reinforcement (112) meets the shear wall bending bearing capacity verification requirements, or replaces multiple edge component vertical reinforcements of a traditional shear wall according to the principle of equal area replacement of reinforcements of the same strength grade, or meets the minimum reinforcement ratio requirements of the edge component vertical reinforcement in the current specification; at this time, the vertical post-casting section edge component vertical reinforcements (31) are connected by reinforcement joints (32), and the reinforcement joints (32) are arranged at the same height or staggered at a certain distance.

8. The structure of connecting nodes with side reinforcement of vertical and horizontal walls of a composite shear wall with openings according to claim 6, characterized in that: The diameter of the large-diameter edge member vertical stress-bearing steel bars (117) is not less than 14 mm; the diameter of the precast wall edge member vertical structural steel bars (112) is not greater than 10 mm and is arranged in the precast concrete wall panel (14), and the number of the steel bars is set according to the range of the precast wall edge member area (11); when the length of the precast wall edge member area (11) is not greater than 300 mm, four precast wall edge member vertical structural steel bars (112) are arranged; when the length of the precast wall edge member area (11) is between 300 and 600 mm, six precast wall edge member vertical structural steel bars (112) are arranged.

9. The structure of connecting nodes with side reinforcement of vertical and horizontal walls of a composite shear wall with openings according to claim 5, characterized in that: The horizontal connecting steel bars (35) are passed between the vertical post-cast section (3) and the prefabricated wall (2) without openings, and have a diameter not less than the diameter of the horizontal distribution steel bars (121) in the prefabricated wall (2) without openings, and a vertical spacing not greater than the spacing of the horizontal distribution steel bars (121).

10. The structure of connecting nodes with side reinforcement of vertical and horizontal walls of a composite shear wall with openings according to claim 5 or 9, characterized in that: In the bottom overlap section (17) of the vertical distribution steel bars of the precast wall in the cavity (15), the horizontal connecting steel bars (35) are U-shaped steel bars, the open ends of which extend into the precast wall (2) without openings, and the closed ends are tied and positioned with the stirrups (33) of the edge member of the vertical post-casting section; in the section (18) outside the bottom overlap section of the vertical distribution steel bars of the precast wall in the cavity (15), the horizontal connecting steel bars (35) are U-shaped steel bars with closed ring steel bars and hooks on the open ends, or U-shaped steel bars.

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