CN111691580A - Superposed embedded column with large-diameter edge member vertical stress reinforcing steel bars arranged in cavity and prefabricated wall - Google Patents

Abstract

A superimposed concealed column and a prefabricated wall in which a large-diameter edge member vertical stress steel bar is arranged in a cavity, and only a small-diameter edge member vertical structural steel bar, an edge member stirrup and a tie bar are arranged in a precast concrete wall panel. Concealed column steel skeleton, the upper and lower ends of the vertical structural steel bars of the edge members do not protrude from the precast concrete panels, and do not participate in the calculation of the structural stress; a single row of large-diameter vertical steel bars are arranged in the cavity as the vertical stress steel bars of the edge members. Participate in the calculation of the structural force. The vertical force steel bars of the upper and lower edge members are connected by steel joints in the cavity, and the force is reliable, and the amount of vertical steel bars in the wall is not increased. Concrete is poured in the cavity after pouring on site to form a superimposed dark layer. column. The above-mentioned structural production stage can avoid the interference of the vertical steel bars of the edge members on the prefabricated wall, which is convenient for the production of the prefabricated wall; in the field installation stage, the influence of the double-row vertical connecting steel bars in the superimposed hidden column on the installation accuracy of the prefabricated wall can be avoided, which is helpful to improve the installation accuracy of the prefabricated wall. Prefab wall installation efficiency and installation accuracy.

Description

Superimposed concealed column and prefab make walls

technical field

The invention belongs to the technical field of construction, and relates to a prefabricated shear wall, in particular to a superimposed concealed column and a prefabricated wall in which a large-diameter edge member vertical stress steel bar is arranged in a cavity.

Background technique

The existing assembled integral shear wall structure can be divided into a fully prefabricated shear wall structure and a superimposed shear wall structure according to the prefabricated wall form it adopts. The composite shear wall structure adopts a prefabricated shear wall with a cavity inside, and the prefabricated concrete panels on both sides are connected as a whole by steel trusses, concrete longitudinal ribs or plane steel welded mesh, such as double-sided composite shear walls, EVE Prefabricated hollow wall panels, SPCS reinforced welded mesh superimposed shear walls and longitudinal rib superimposed shear walls, etc. The vertical reinforcement of the superimposed shear wall adopts indirect lap connection. Compared with the full prefabricated shear wall, the processing and installation accuracy requirements are lower, which can effectively reduce the connection cost of the prefabricated wall, and the connection quality is controllable. Prefabricated concrete structural system.

In actual engineering, it is unavoidable to use superimposed concealed columns for prefabricated walls. At present, vertical steel bars on the edge components of prefabricated walls in superimposed concealed columns are set in the prefabricated walls, instead of protruding from the top and bottom surfaces of the prefabricated walls, but in the cavity of the prefabricated walls. The additional vertical connecting steel bars of the edge members are indirectly overlapped with the vertical steel bars of the inner edge members of the upper and lower prefabricated walls, so as to realize the connection of the vertical steel bars of the inner edge members of the upper and lower prefabricated walls. The use of the above-mentioned superimposed hidden column structure will bring the following problems: 1) The thickness of domestic residential shear walls is often small, and the size of the superimposed shear wall cavity along the thickness direction of the wall is usually no more than 100mm, and the layout in the cavity The double-row edge members are attached with vertical connecting steel bars and other horizontal steel bars, resulting in dense steel bars in the cavity of the dark column. The cost of dense concrete is high; 2) The diameter of the vertical steel bars of the edge members is large, and the prefabricated wall is difficult to process and quality; The vertical reinforcement of the component is indirectly lapped, resulting in an increase in the amount of reinforcement.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned shortcomings of the existing superimposed concealed column structure, the purpose of the present invention is to provide a superimposed concealed column and a prefabricated wall in which a large-diameter edge member vertical stress steel bar is arranged in a cavity, which integrates a superimposed shear wall. The advantages of low connection cost, easy control of connection quality, light weight of prefabricated walls and high efficiency of on-site installation. A single row of large-diameter vertical steel bars are arranged in the cavity of hidden columns of prefabricated walls as vertical stress steel bars for wall edge components. Only small-diameter vertical structural steel bars are arranged in the column, which can realize the standardization of prefabricated wall steel cages, help to improve the production efficiency of prefabricated walls, and facilitate quality control. Connection, reliable force, ensuring that the amount of vertical steel bars in the wall does not increase, and during the on-site installation stage, it can avoid the influence of the additional vertical connecting steel bars on the double-row edge members in the superimposed concealed column on the installation accuracy of the prefabricated wall, which helps to improve the installation of the prefabricated wall. Efficiency and installation accuracy.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A superimposed dark column with a large-diameter edge member vertically bearing steel reinforcement is arranged in the cavity, including prefabricated concrete panels 11 on both sides, and a cavity 12 is formed between the two precast concrete panels 11. In the precast concrete panel 11, only Small-diameter vertical structural steel bars 13 for edge members, edge member stirrups 14, and edge member tie bars 15 are arranged to form a dark-column steel skeleton. The upper and lower ends of the edge member vertical structural steel bars 13 do not protrude from the precast concrete panel 11 and do not participate in Structural stress calculation; configure a single row of large-diameter vertical steel bars in the cavity 12 as the edge member vertical stress steel bar 16 to participate in the structural stress calculation, and the upper and lower edge member vertical stress steel bars 16 are used in the cavity 12. The steel bar joints 161 are connected, and concrete is poured into the cavity 12 on site to form a superimposed dark column.

Generally speaking, the small diameter means that the diameter is not more than 10 mm, and the large diameter means that the diameter is not less than 18 mm.

Preferably, the vertical stress reinforcement bars 16 of the edge members are arranged in a single row along the center line of the wall thickness in the cavity 12 .

Preferably, the reinforcement area of the vertical stress-bearing steel bars 16 of the edge member meets the requirements for checking the compressive bearing capacity of the shear wall, or replaces multiple edges of the traditional shear wall according to the principle of equal-area replacement of steel bars of the same strength grade. The vertical reinforcement of the member, or meet the minimum reinforcement ratio requirements of the current code for the vertical reinforcement of the edge member.

Preferably, in the cavity 12, the vertical stress-bearing steel bars 16 of the upper and lower edge members are connected at the same height by steel joints 161, that is, the percentage of joints in the same connection section is 100%; 100% connection in the same connection section, reducing the requirements for joint performance.

Preferably, when the diameter of the vertical force-bearing steel bar 16 of the edge member is larger than 28 mm, three or more vertical force-bearing steel bars 16 of the edge member can be arranged in the cavity 12 to avoid the diameter of the steel bar being too large.

Preferably, the horizontal joint structure of the prefabricated wall is consistent with the horizontal joint structure of the existing laminated shear wall, the horizontal joint 31 at the bottom of the prefabricated wall is set at the floor elevation, and the distance between the bottom surface of the prefabricated wall and the top surface of the floor slab is not less than 50 mm , in order to ensure the compactness of the post-cast concrete at the horizontal joint 31 at the bottom of the prefabricated wall.

The present invention also provides a prefabricated wall using a superimposed concealed column in which the large-diameter edge member vertical stress steel bars are arranged in the cavity, including a superimposed concealed column area 1 and a wall body area 2, and a superimposed concealed column area 1 Using the superimposed hidden column, the prefabricated concrete wall panel 11 extends to form the wall body area 2 .

Preferably, the vertical stress steel bars 16 of the edge members in the cavity 12 of this layer and the vertical stress steel bars 16 of the edge members extending from the lower layer are connected by steel joints 161 and then hoisted; In the cavity 12 of the closed column area 1, the vertical stress steel bars 16 of the edge members are pierced, and a gap 17 is reserved at the root of the prefabricated concrete wall plate 11 as an installation hand hole, and the steel bar joint 161 is used in the installation hand hole to realize the upper and lower floors. For the connection of the vertical stress-bearing steel bars 16 of the edge members, the gap 17 can be formed by using a stereotyped spacer block.

Preferably, the prefabricated concrete wall panels 11 are connected by steel trusses 23, or connected by concrete longitudinal ribs or plane steel welded mesh.

Further, the prefabricated concrete wall panels 11, the thermal insulation panels 4 and the prefabricated concrete outer leaf panels 5 are prefabricated as a whole in the factory to form a prefabricated sandwich thermal insulation laminated wall to achieve exterior wall decoration, thermal insulation and structural integration; the prefabricated concrete wall panels 11 and The prefabricated concrete outer leaf plate 5 is tied by the thermal insulation tie member 6, and the precast concrete wall plate 11 is only provided on the inner side of the wall.

Compared with the prior art, the beneficial effects of the present invention are:

(1) A single row of large-diameter edge member vertical stress steel bars are arranged in the prefabricated wall cavity of the present invention, and the large-diameter edge member vertical stress steel bars are centrally arranged along the wall thickness direction, and the clear distance from the precast concrete panel is large, which can be It avoids the influence of the additional vertical connecting steel bars of the double-row edge members on the installation accuracy of the prefabricated wall in the existing superimposed concealed column structure, and helps to improve the installation efficiency and installation accuracy of the prefabricated wall.

(2) The space between the reinforcing bars in the cavity of the superimposed concealed column of the present invention is large, which facilitates the vibration of the post-cast concrete, helps to ensure the quality of the post-cast concrete, and does not interfere with the layout of other steel bars in the cavity.

(3) In the prefabricated wall cavity of the present invention, a single row of large-diameter edge member vertical stress steel bars are connected by steel straight thread joints. The connection technology is mature and the force transmission performance is good, which can ensure the seismic performance of the prefabricated wall under large deformation. At the same time, it avoids the indirect overlap of vertical steel bars of edge members, which helps to control the amount of vertical steel bars of edge members.

(4) Only small-diameter vertical structural steel bars are arranged in the prefabricated wall concealed column of the present invention, which can realize the standardization of the prefabricated wall reinforcement cage, help to improve the production efficiency of the prefabricated wall and facilitate quality control.

(5) The superimposed concealed column structure with the vertically stressed steel bars of the large-diameter edge members in the cavity of the present invention has strong versatility, and can be used to optimize the existing double-sided superimposed shear walls, EVE prefabricated hollow wall panels, and SPCS steel reinforcement welding. Concealed column structure of prefabricated superimposed shear walls such as mesh superimposed shear walls and longitudinal rib superimposed shear walls.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of a superimposed concealed column and a prefabricated wall with a large-diameter edge member vertically bearing steel bars arranged in a cavity according to the present invention.

FIG. 2 is a front view of the prefabricated hollow composite shear wall shown in FIG. 1 .

FIG. 3 is a schematic view of the section A-A in FIG. 2 .

FIG. 4 is a schematic cross-sectional view of B-B in FIG. 2 .

FIG. 5 is a schematic structural diagram of the vertical stress steel bar connection and the horizontal joint of the inner edge members of the upper and lower prefabricated wall cavity according to the present invention.

6 is a three-dimensional schematic diagram of a prefabricated wall in which the vertical force-bearing steel bars of the inner edge members of the cavity are staggered by a certain distance and connected by steel bar joints according to the present invention.

FIG. 7 is a front view of a prefabricated wall in which the vertical force-bearing steel bars of the inner edge members of the cavity are staggered by a certain distance and connected by steel bar joints.

Fig. 8 is a three-dimensional schematic diagram of a prefabricated wall with three vertical stress-bearing steel bars of edge members arranged in the cavity of the superimposed concealed column.

FIG. 9 is a schematic cross-sectional view of C-C in FIG. 8 .

Fig. 10 is a schematic cross-sectional view of the edge member stirrups shown in Figs. 1 and 2 using common 135° hook stirrups.

Figure 11 is a three-dimensional schematic diagram of the prefabricated wall in which the prefabricated wall is first hoisted, and then the vertical stress steel bars of the inner edge members of the cavity are passed through.

Figure 12 is a front view of the prefabricated wall in which the prefabricated wall is hoisted first, and then the vertical stress steel bars of the inner edge members of the cavity are passed through.

FIG. 13 is a schematic cross-sectional view of D-D in FIG. 12 .

FIG. 14 is a schematic structural diagram of the horizontal joint of the prefabricated wall shown in FIG. 11 , FIG. 12 and FIG. 13 .

Fig. 15 is a schematic cross-sectional view of the prefabricated wall shown in Figs. 1 and 2, which is an improved decoration, thermal insulation, and structural integration, that is, a prefabricated sandwich thermal insulation laminated wall.

16 is a schematic cross-sectional view of a prefabricated sandwich thermal insulation laminated wall with three vertical stress-bearing steel bars for edge members arranged in the cavity of the superimposed concealed column.

Fig. 17 is a comparative example of the prefabricated wall shown in Fig. 1 and Fig. 2 , that is, a three-dimensional schematic diagram of the existing edge member's vertical steel bar lap connection to the prefabricated wall.

FIG. 18 is a schematic cross-section E-E of FIG. 17 .

FIG. 19 is a schematic structural diagram of the vertical steel bar lap connection and the horizontal joint of the edge members of the upper and lower prefabricated walls of the comparative example shown in FIG. 18 .

In the figure: 1- superimposed concealed column area; 2- wall body area; 11- precast concrete siding; 12- cavity; 13- vertical structural reinforcement of edge members; 14- stirrups of edge members; 15- tension of edge members Reinforcing bar; 16 - vertical stress bar for edge members; 161 - bar joint; 17 - gap; 18 - stress vertical bar for edge members in prefabricated walls; 19 - additional vertical connection bar for edge members; 21 - horizontal distribution bar; 22- vertical distribution of steel bars; 23- steel bar trusses; 31- horizontal joints at the bottom of prefabricated walls; 32- horizontal post-casting strips at the top of prefabricated walls; 33- prefabricated floor slabs; 4- thermal insulation boards; - Knots.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the present invention first provides a superimposed concealed column with a large-diameter edge member vertically stressed steel bar in a cavity, which includes precast concrete wall panels on both sides 11. A cavity 12 is formed between the two precast concrete wall panels 11 . Only small-diameter vertical structural steel bars 13 for edge members are arranged in the precast concrete panel 11. The vertical structural steel bars 13 for edge members, stirrups 14 for edge members, and tie bars 15 for edge members form a dark column steel skeleton. The upper and lower ends of the steel bars 13 do not protrude from the precast concrete wall 11 and do not participate in the calculation of the structural force; the structure of the edge member stirrups 14 and the edge member tension bars 15 can be consistent with ordinary cast-in-place shear walls.

A single row of large-diameter vertical steel bars are arranged in the cavity 12 as the vertical stress-bearing steel bars 16 of the edge members to participate in the calculation of the structural force. , the force is reliable, and it helps to control the amount of steel bars. That is, the present invention uses the large-diameter edge member vertical stress reinforcement bars 16 arranged in the cavity 12 to replace the inner edges of a plurality of smaller-diameter prefabricated walls arranged in the prefabricated concrete panel 11 in the existing superimposed shear wall The component is subjected to vertical reinforcement 18.

In the present invention, the small diameter is limited to a diameter of not more than 10 mm, and the large diameter is limited to a diameter of not less than 18 mm. Those skilled in the art should know that similar parameter definitions can be given according to the above functional requirements.

2 , 3 , 4 and 5 , the vertical stress reinforcement bars 16 of the edge members can be arranged in a single row along the center line of the wall thickness in the cavity 12 , and the reinforcement area satisfies the compression force of the normal section of the shear wall. Bearing capacity check requirements, or replace the vertical reinforcement of multiple edge members of traditional shear walls 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 code for the vertical reinforcement of edge members.

Concrete is poured into the cavity 12 after pouring on site, that is, a superimposed dark column is formed. With the aid of the above structure, the standardization of the reinforcement cage of the prefabricated wall can be realized, which is helpful to improve the production efficiency of the prefabricated wall and facilitate the quality control.

In the cavity 12, the vertical stress steel bars 16 of the upper and lower edge members can be connected at the same height by the steel bar joints 161, that is, the percentage of joints in the same connection section is 100%. At this time, the performance of the steel bar joints 161 should meet the requirements of the current specification. ; It is also possible to stagger the distance and use the steel bar joint 161 to connect, avoid 100% connection in the same connection section, and reduce the performance requirements of the steel bar joint 161, as shown in Figure 6 and Figure 7.

When the reinforcement area required to meet the requirements for checking the compressive bearing capacity of the normal section of the shear wall is large, the arrangement of the two vertical stress reinforcement bars 16 of the edge members according to Figure 1 and Figure 2 will lead to a larger diameter of the reinforcement bar, which is not conducive to the reinforcement joints. 161 Construction and post-cast concrete pouring in the cavity 12. At this time, as shown in Figures 8 and 9, three or more vertical stress steel bars 16 for edge members can be arranged in the cavity 12 to control its diameter. The principle of tendons is the same as before.

In the present invention, the edge member stirrups 14 can be welded closed hoop. Considering that after the edge member vertical stress steel bars 16 are arranged in the cavity 12, there are fewer steel bars in the cavity 12, and the mutual interference between the steel bars is small, as shown in FIG. 10 . , the edge member stirrups 14 can also use ordinary 135° hook stirrups.

The steel bar joint 161 should preferably use straight thread joints, and other forms of steel bar joints can also be used under the premise of reliable technology.

Referring to Figures 1, 2, 3, and 4, the present invention also provides a prefabricated wall of a superimposed concealed column with a large-diameter edge member vertically stressed steel bar in the cavity, including a superimposed concealed column area. 1 and the wall body area 2, the superimposed dark column area 1 adopts the superimposed dark column, and the precast concrete wall panel 11 extends to form the wall body area 2. The structure of the wall body area 2 is consistent with the structure of the existing superimposed shear wall, and the vertically distributed steel bars 22 of the upper and lower prefabricated walls are connected by indirect lap joints.

The horizontal joint structure of the prefabricated wall of the present invention is consistent with the horizontal joint structure of the existing superimposed shear wall. The horizontal joint 31 at the bottom of the prefabricated wall should be set at the floor elevation. In order to ensure that the horizontal joint 31 at the bottom of the prefabricated wall is poured concrete The distance between the bottom surface of the prefabricated wall and the top surface of the floor slab should not be less than 50mm.

The prefabricated concrete wall panels 11 on both sides of the prefabricated wall of the present invention can be connected by steel trusses 23, and can also be connected by concrete longitudinal ribs or plane steel welded meshes. The existing double-sided superimposed shear walls, EVE prefabricated hollow wall panels, SPCS reinforced welded mesh superimposed shear walls and longitudinal rib superimposed shear walls and other superimposed shear walls have strong versatility.

The prefabricated production process of the prefabricated wall of the present invention is consistent with that of the existing prefabricated wall, and the recommended on-site construction and installation process includes the following: the vertical stress steel bar 16 of the inner edge member of the cavity 12 of this layer and the edge member extended from the lower layer are vertically stressed Reinforcing bars 16 are connected by reinforcing bar joints 161, and then hoisted. Care should be taken to control the position of the vertical stress bars 16 of the inner edge members of the cavity 12 on this floor to prevent them from interfering with the falling of the prefabricated wall, and adjust the verticality and levelness of the prefabricated wall; Joints 31 formwork, pour concrete into the cavity 12 of the prefabricated wall, and then maintain and remove the formwork.

If the number of vertical stress-bearing steel bars 16 of the edge members in the cavity 12 is large, and it is inconvenient to use the above-mentioned on-site construction and installation process, at this time, as shown in Figure 11, Figure 12, Figure 13 and Figure 14, it is also possible to hoist prefabricated steel bars first. Wall, and then wear the vertical stress steel bars 16 of the edge members of this layer. At this time, a gap 17 should be reserved at the root of the precast concrete wall panel 11 as an installation hand hole, and the reinforcement joint 161 is used in the installation hand hole to realize the vertical edge members of the upper and lower layers. For the connection to the stressed steel bar 16, the steel bar joints 161 should be arranged at the same height to control the size of the reserved gap 17 and facilitate on-site formwork support.

As shown in Fig. 11, Fig. 12, Fig. 13, the gap 17 can be formed by a shaped spacer block, and the size should meet the installation and construction requirements of the steel bar joint 161 in the cavity 12; within the range of the gap 17, the edge member vertically constructs the steel bar 3 truncation, the edge member stirrups 14 and the horizontal distribution steel bars are continuous.

As shown in Fig. 15 and Fig. 16, the prefabricated wall of the present invention is a structural wall, which can be used for an exterior wall or an interior wall of a building. The prefabricated concrete wall panel 11, the thermal insulation panel 4 and the prefabricated concrete outer leaf panel 5 can also be prefabricated as a whole in the factory to form a prefabricated sandwich thermal insulation laminated wall to realize the integration of prefabricated exterior wall decoration, thermal insulation and structure. The inner side of the body is provided with a prefabricated concrete wall plate 11;

In a specific embodiment of the present invention, two vertical stress-bearing steel bars 16 for edge members are arranged in the cavity 12. When replacing them according to the principle of equal-area replacement of steel bars of the same strength grade, the recommended replacement principle is one with a diameter of 22 mm and a 1 vertical stress bar 16 of edge member with diameter of 20mm replaces 6 bars of 12mm diameter, 1 vertical stress bar 16 of edge member with diameter of 28mm and 1 diameter of 20mm replaces 6 bars of 14mm diameter, 2 bars of diameter The 28mm edge member vertical stress steel bar 16 replaces 6 16mm diameter steel bars, and the 2 32mm diameter edge member vertical stress bar 16 replaces the 6 18mm diameter steel bar.

Figure 17, Figure 18, Figure 19 show the structure of the existing edge member vertical steel bar lap connection to the prefabricated wall, that is, a preferred comparative example of the present invention. The present invention is compared with the comparative example, see Table 1.

Table 1

To sum up, only stirrups and vertical structural steel bars are arranged in the dark column of the present invention, and the upper and lower ends of the vertical structural steel bars do not protrude from the prefabricated wall and do not participate in the calculation of structural force; a single row of large-diameter vertical steel bars are arranged in the cavity. As the vertical stress reinforcement of the wall edge members, it participates in the calculation of the structural stress. The vertical stress reinforcement of the upper and lower edge members is connected by steel joints in the cavity. Compared with the existing structure, the prefabricated wall with the above structure can avoid the interference of the vertical steel bars of the edge components on the production of the prefabricated wall, which is convenient for the production of the prefabricated wall. The influence of the installation accuracy of the prefabricated wall helps to improve the installation efficiency and installation accuracy of the prefabricated wall; the vertical force steel bars of the large-diameter edge members in the cavity are directly connected by steel bar joints, and the force is reliable, and the amount of vertical steel bars in the wall is not increased. .

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes and substitutions within the technical scope disclosed by the present invention, All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. A superimposed concealed column with a large-diameter edge member vertically bearing steel reinforcement is arranged in the cavity, including prefabricated concrete panels (11) on both sides, and a cavity (12) is formed between the two prefabricated concrete panels (11), It is characterized in that, in the precast concrete wall plate (11), only small-diameter vertical structural steel bars (13) for edge members, edge member stirrups (14), and edge member tension bars (15) are arranged to form a dark column steel skeleton, and the edge The upper and lower ends of the vertical structural steel bars (13) of the members do not protrude from the prefabricated concrete wall plate (11) and do not participate in the calculation of the structural force; a single row of large-diameter vertical steel bars is arranged in the cavity (12) as the edge member for the vertical support. The force steel bar (16) is involved in the calculation of the structural force. The vertical force steel bar (16) of the upper and lower edge members is directly connected with the steel bar joint (161) in the cavity (12). Concrete, forming superimposed dark columns. 2. The superimposed concealed column with a large-diameter edge member vertically stressed steel bar in the cavity according to claim 1, characterized in that, the small diameter means that the diameter is not greater than 10 mm, and the large diameter means that the diameter is not less than 10 mm. 18mm. 3. The superimposed concealed column with a large-diameter edge member vertically stressed steel bar arranged in the cavity according to claim 1, wherein the edge member vertically stressed steel bar (16) is in the cavity (12) Arranged in a single row along the midline of the wall thickness. 4. The superimposed concealed column according to claim 1 or 3, wherein the vertical force-bearing steel bar of the large-diameter edge member is arranged in the cavity, wherein the reinforcement area of the vertical force-bearing steel bar (16) of the edge member is sufficient to meet the shearing requirements. The requirements for checking the compressive bearing capacity of the normal section of the shear wall, or replace the vertical steel bars of multiple 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 allocation of vertical steel bars for edge members in the current code. Muscle rate requirements. 5. The superimposed concealed column with a large-diameter edge member vertically stressed steel bar in the cavity according to claim 1, characterized in that, in the cavity (12), the upper and lower edge member vertical stress steel bars (16) ) Use steel bar joints (161) to connect at the same height, that is, the percentage of joints in the same connection section is 100%; or use steel bar joints (161) to connect at staggered distances to avoid 100% connection in the same connection section and reduce the performance of the joints. Require. 6. The superimposed concealed column with a large-diameter edge member vertically stressed steel bar in the cavity according to claim 1, characterized in that, when the edge member vertical stress steel bar (16) diameter is greater than 28mm, in the cavity (12) Three or more vertical stress-bearing steel bars (16) of edge members are arranged in the interior to avoid excessively large diameter of the steel bars. 7. Adopt the prefabricated wall of the superimposed hidden column with the vertical stress steel bar of the large diameter edge member in the cavity according to claim 1, including the superimposed hidden column area (1) and the wall body area (2). The column area (1) adopts the superimposed dark column, and the prefabricated concrete wall plate (11) extends to form the wall body area (2). 8. The prefabricated wall according to claim 7, characterized in that, the vertical stress steel bars (16) of edge members in the cavity (12) of this layer and the vertical stress steel bars (16) of edge members protruding from the lower layer are adopted. The steel bar joint (161) is connected and then hoisted; or after the installation of the prefabricated wall is completed, the vertical stress steel bar (16) of the edge member is penetrated in the cavity (12) of the superimposed concealed column area (1), wherein the prefabricated concrete wall is A gap (17) is reserved at the root of the plate (11) as an installation hand hole, and a steel bar joint (161) is used in the installation hand hole to realize the connection of the vertically stressed steel bars (16) of the upper and lower edge members. 9 . The prefabricated wall according to claim 7 , wherein the prefabricated concrete wall panels ( 11 ) are connected by steel trusses ( 23 ), or connected by concrete longitudinal ribs or plane steel welded mesh. 10 . 10. The prefabricated wall according to claim 7, wherein the prefabricated concrete wall panel (11), the thermal insulation panel (4) and the prefabricated concrete outer leaf panel (5) are prefabricated as a whole in a factory to form a prefabricated sandwich thermal insulation composite wall , to realize the integration of exterior wall decoration, heat preservation and structure; the precast concrete wall panel (11) and the precast concrete outer leaf plate (5) are tied by the heat preservation tie member (6), and only the precast concrete wall panel ( 11).

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