CN212562033U - Superposed embedded column with large-diameter vertical stress reinforcing steel bars arranged in cavity and prefabricated wall - Google Patents

Abstract

A superposed hidden column and a prefabricated wall with large-diameter vertical stressed steel bars arranged in a cavity are disclosed, wherein only edge component vertical constructional steel bars with small diameters, edge component stirrups and tie bars are arranged in a prefabricated concrete wallboard to form a hidden column steel bar framework, and the upper end and the lower end of the edge component vertical constructional steel bars do not extend out of the prefabricated concrete wallboard and do not participate in structural stress calculation; the single-row large-diameter vertical reinforcing steel bars are arranged in the cavity and used as vertical stress reinforcing steel bars of the edge components to participate in structural stress calculation, the vertical stress reinforcing steel bars of the edge components of the upper layer and the lower layer are connected in the cavity through reinforcing steel bar joints, stress is reliable, the using amount of the vertical reinforcing steel bars of the wall body is not increased, and post-cast concrete in the cavity is cast in situ to form a superposed hidden column. The construction production stage can avoid the interference of vertical steel bars of edge components on the prefabricated wall, and is convenient for the production of the prefabricated wall; the influence of double vertical connecting steel bars in the superposed hidden columns on the installation precision of the prefabricated wall can be avoided in the field installation stage, and the prefabricated wall installation efficiency and the installation precision can be improved.

Description

Superposed embedded column with large-diameter vertical stress reinforcing steel bars arranged in cavity and prefabricated wall

Technical Field

The invention belongs to the technical field of buildings, relates to a prefabricated shear wall, and particularly relates to a superposed embedded column with large-diameter vertical stressed steel bars arranged in a cavity and a prefabricated wall.

Background

The existing assembled integral shear wall structure can be divided into a fully-prefabricated shear wall structure and a superposed shear wall structure according to the adopted prefabricated wall form. The superposed shear wall structure adopts a prefabricated shear wall with a cavity inside, and prefabricated concrete wallboards at two sides are connected into a whole through a steel bar truss, a concrete longitudinal rib or a plane steel bar welding net, such as a double-faced superposed shear wall, an EVE prefabricated hollow wallboard, an SPCS steel bar welding net superposed shear wall, a longitudinal rib superposed shear wall and the like. The vertical steel bars of the superposed shear wall are connected in an indirect lap joint mode, compared with a fully prefabricated shear wall, the superposed shear wall has low requirements on processing and mounting precision, can effectively reduce the connection cost of the prefabricated wall, has controllable connection quality, and is a fabricated concrete structure system which meets the current Chinese situation.

In actual engineering, the prefabricated wall adopts the coincide hidden column to be difficult to avoid, and prefabricated wall edge member vertical reinforcement sets up in the prefabricated wall in the coincide hidden column at present, does not stretch out prefabricated wall top surface, bottom surface, sets up the indirect overlap joint of edge member additional vertical connecting reinforcement and the prefabricated wall interior edge member vertical reinforcement of upper and lower floor in the prefabricated wall cavity, realizes the connection of the prefabricated wall interior edge member vertical reinforcement of upper and lower floor. With the above-mentioned superimposed hidden pillar structure, the following problems will arise: 1) the thickness of the domestic residential shear wall is usually small, the size of the cavity of the superposed shear wall along the thickness direction of the wall body is not more than 100mm, two rows of edge members are arranged in the cavity and are additionally provided with vertical connecting steel bars, and other horizontal steel bars are additionally arranged, so that the steel bars in the cavity of the hidden column are dense, when concrete is cast in situ, the post-cast concrete in the cavity of the superposed hidden column cannot be vibrated, and the cost of adopting self-compacting concrete in a large range in actual engineering is high; 2) the vertical steel bars of the edge components have larger diameter, and the prefabricated wall is difficult to prefabricate and process and the quality is difficult to control; 3) the edge member is arranged in the cavity of the prefabricated wall, the vertical connecting steel bars are attached to the edge member, and the vertical steel bars of the edge member in the prefabricated wall on the upper layer and the lower layer are indirectly lapped, so that the using amount of the steel bars is increased.

Disclosure of Invention

In order to overcome the defects of the existing superposed hidden column structure, the invention aims to provide a superposed hidden column and a prefabricated wall with a cavity provided with vertical stress reinforcing steel bars of large-diameter edge components, integrates the advantages of low connecting cost, easy control of connecting quality, light self weight of the prefabricated wall, high field installation efficiency and the like of the superposed shear wall, arranges single-row large-diameter vertical reinforcing steel bars in the cavity of the hidden column of the prefabricated wall as the vertical stress reinforcing steel bars of the edge components of the wall body, only arranges small-diameter vertical structural reinforcing steel bars in the hidden column of the prefabricated wall, can realize the standardization of a reinforcement cage of the prefabricated wall, is beneficial to improving the production efficiency of the prefabricated wall and facilitating the quality control, simultaneously adopts reinforcement joints for directly connecting the vertical stress reinforcing steel bars of the large-diameter edge components in the cavity, ensures that the using amount of the vertical reinforcing steel bars of the wall body is not increased, and can avoid the influence of the vertical connecting reinforcing steel bars, the prefabricated wall mounting efficiency and the mounting precision can be improved.

In order to achieve the purpose, the invention adopts the technical scheme that:

the superposed hidden column is internally provided with large-diameter edge member vertical stressed steel bars and comprises precast concrete wallboards 11 at two sides, a cavity 12 is formed between the two precast concrete wallboards 11, only small-diameter edge member vertical constructional steel bars 13, edge member stirrups 14 and edge member tie bars 15 are arranged in the precast concrete wallboards 11 to form a hidden column steel bar framework, and the upper end and the lower end of each edge member vertical constructional steel bar 13 do not extend out of the precast concrete wallboards 11 and do not participate in structural stress calculation; a single row of large-diameter vertical reinforcing steel bars are arranged in the cavity 12 and used as edge member vertical stress reinforcing steel bars 16 to participate in structural stress calculation, the upper layer edge member vertical stress reinforcing steel bars 16 and the lower layer edge member vertical stress reinforcing steel bars 16 are connected in the cavity 12 through reinforcing steel bar joints 161, and concrete is poured in the cavity 12 in a cast-in-place mode to form a superposed hidden column.

In general, the small diameter means a diameter of not more than 10mm, and the large diameter means a diameter of not less than 18 mm.

Preferably, the edge member vertical load-bearing rebars 16 are arranged in a single row along the wall thickness centerline within the cavity 12.

Preferably, the reinforcement area of the vertical stressed steel bars 16 of the edge member meets the checking and calculating requirement of the compressive bearing capacity of the front section of the shear wall, or replaces a plurality of vertical steel bars of the edge member of the traditional shear wall according to the principle of equal-area replacement of steel bars of the same strength grade, or meets the requirement of the current specification on the minimum reinforcement ratio of the vertical steel bars of the edge member.

Preferably, in the cavity 12, the vertically stressed steel bars 16 of the upper and lower layer edge members are connected at the same height by using a steel bar joint 161, that is, the joint percentage in the same connecting section is 100%; or the staggered distance is connected by adopting the steel bar joint 161, so that 100 percent of connection in the same connection section is avoided, and the requirement on the performance of the joint is reduced.

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

Preferably, the horizontal seam structure of prefabricated wall is unanimous with current superimposed shear wall horizontal seam structure, and the horizontal seam 31 of prefabricated wall bottom sets up at floor elevation height, and the distance of prefabricated wall bottom apart from the floor top surface is not less than 50mm, in order to guarantee the compactedness of the post-cast concrete of prefabricated wall bottom horizontal seam 31 department.

The invention also provides a prefabricated wall body adopting the superposed embedded columns with the large-diameter edge members and the vertical stress reinforcing steel bars arranged in the cavities, and the prefabricated wall body comprises a superposed embedded column area 1 and a wall body area 2, wherein the superposed embedded columns are adopted in the superposed embedded column area 1, and the prefabricated concrete wall plate 11 extends to form the wall body area 2.

Preferably, the edge member vertical stressed steel bars 16 in the cavity 12 of the current layer and the edge member vertical stressed steel bars 16 extending out of the lower layer are connected by steel bar joints 161 and then hoisted; or after the prefabricated wall body is installed, the vertical stressed steel bars 16 of the edge members are arranged in the cavity 12 of the overlapped hidden column region 1 in a penetrating mode, wherein the root of the prefabricated concrete wall plate 11 is reserved with a notch 17 serving as an installation hand hole, the connection of the vertical stressed steel bars 16 of the edge members on the upper layer and the lower layer is achieved through the steel bar connectors 161 in the installation hand hole, and the notch 17 can be formed by occupying the space through the shaped occupied blocks.

Preferably, the precast concrete wall panels 11 are connected by using a steel bar truss 23, or by using a concrete longitudinal rib or a planar steel welded mesh.

Further, the precast concrete wall panel 11, the heat insulation board 4 and the precast concrete outer leaf panel 5 are integrally precast in a factory to form a precast sandwich heat insulation superposed wall, so that decoration, heat insulation and structural integration of the outer wall are realized; the precast concrete wall plate 11 and the precast concrete outer leaf plate 5 are tied by adopting a heat-insulating tie piece 6, and the precast concrete wall plate 11 is only arranged on the inner side of the wall body.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the invention, the single-row large-diameter edge member vertical stress steel bars are arranged in the cavity of the prefabricated wall, the large-diameter edge member vertical stress steel bars are arranged in the middle along the thickness direction of the wall body, and the clear distance between the large-diameter edge member vertical stress steel bars and the prefabricated concrete wall panel is large, so that the influence of the double-row edge member additional vertical connecting steel bars in the existing superposed concealed column structure on the installation precision of the prefabricated wall can be avoided, and the improvement of the installation efficiency and the installation precision of the prefabricated wall.

(2) The space between the steel bars in the cavity of the superposed hidden column is large, so that the vibration of post-cast concrete is facilitated, the casting quality of the post-cast concrete is favorably ensured, and meanwhile, the arrangement of other steel bars in the cavity is not interfered.

(3) According to the prefabricated wall, the single-row large-diameter edge member vertical stressed steel bars are arranged in the cavity of the prefabricated wall and connected through the steel bar straight thread joints, the connection technology is mature, the force transmission performance is good, the anti-seismic performance of the prefabricated wall under large deformation can be guaranteed, meanwhile, the edge member vertical steel bars are prevented from being indirectly lapped, and the using amount of the edge member vertical steel bars is favorably controlled.

(4) According to the prefabricated wall hidden column, only the small-diameter vertical constructional steel bars are arranged in the prefabricated wall hidden column, so that the standardization of a prefabricated wall steel bar cage can be realized, the production efficiency of the prefabricated wall is improved, and the quality control is facilitated.

(5) The superposed embedded column structure with the large-diameter edge member vertically stressed steel bars arranged in the cavity has strong universality and can be used for optimizing the embedded column structure of the existing prefabricated superposed shear walls such as a double-sided superposed shear wall, an EVE prefabricated hollow wall plate, an SPCS steel bar welding net superposed shear wall, a longitudinal rib superposed shear wall and the like.

Drawings

Fig. 1 is a three-dimensional schematic view of a superposed embedded column and a prefabricated wall with large-diameter edge members and vertical stressed steel bars arranged in a cavity.

Fig. 2 is a front view of the prefabricated hollow composite shear wall of fig. 1.

Fig. 3 is a schematic sectional view taken along line a-a in fig. 2.

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

FIG. 5 is a schematic diagram of the construction of vertical stressed steel bar connection and horizontal joint of edge members in the cavity of the prefabricated wall of the upper and lower floors.

FIG. 6 is a three-dimensional schematic view of a prefabricated wall in which vertical stressed steel bars of edge members of a cavity are staggered by a certain distance and connected by steel bar joints.

FIG. 7 is a front view of the prefabricated wall of the present invention with the vertical stressed steel bars of the edge members of the cavity staggered by a certain distance and connected by steel bar joints.

Fig. 8 is a three-dimensional schematic view of a prefabricated wall with three vertical stressed steel bars of edge members arranged in a cavity of an overlapped concealed column.

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

Fig. 10 is a cross-sectional view of the edge member stirrup of fig. 1 and 2 using a conventional 135 hook stirrup.

FIG. 11 is a three-dimensional schematic view of a prefabricated wall with prefabricated wall hoisted first and then with vertically stressed reinforcing steel bars penetrating through inner edge members of a cavity.

FIG. 12 is a front view of a prefabricated wall with prefabricated wall being hoisted first and then being penetrated by vertical force-bearing reinforcing steel bars of edge members inside the cavity.

Fig. 13 is a schematic cross-sectional view taken along line D-D of fig. 12.

Fig. 14 is a schematic view showing a construction of a horizontal joint of the prefabricated wall shown in fig. 11, 12 and 13.

Fig. 15 is a schematic cross-sectional view of a modified type of decoration, heat preservation and structure integration of the prefabricated wall shown in fig. 1 and 2, namely a prefabricated sandwich heat preservation laminated wall.

Fig. 16 is a schematic cross-sectional view of a prefabricated sandwich heat-insulating laminated wall with three vertical stressed steel bars of edge members arranged in a cavity of the laminated hidden column.

Fig. 17 is a three-dimensional schematic view of a prefabricated wall according to a comparative example of the prefabricated wall shown in fig. 1 and 2, namely, a prefabricated wall in which vertical reinforcing bars of existing edge members are lap-jointed.

Fig. 18 is a schematic cross-sectional view of E-E in fig. 17.

Fig. 19 is a schematic view showing the construction of vertical reinforcing bar lap joints and horizontal joints of edge members of prefabricated walls of upper and lower stories in accordance with the comparative example shown in fig. 18.

In the figure: 1-overlapping the hidden column area; 2-wall area; 11-prefabricating a concrete wall plate; 12-a cavity; 13-edge member vertical construction rebar; 14-edge member stirrup; 15-edge member lacing; 16-edge member vertical stressed steel bars; 161-rebar junctions; 17-a notch; 18-stressed vertical steel bars of the inner edge member of the prefabricated wall; 19-attaching vertical connecting steel bars to the edge members; 21-horizontally distributing steel bars; 22-vertically distributing reinforcing steel bars; 23-steel bar trusses; 31-horizontal seaming of the bottom of the prefabricated wall; 32-horizontal post-cast strip on the top of the prefabricated wall; 33-prefabricating a floor slab; 4-heat insulation board; 5-prefabricating a concrete outer blade plate; 6-pulling the connecting piece.

Detailed Description

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

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present invention firstly provides a superposed hidden column with large-diameter edge member vertical stressed steel bars arranged in a cavity, which comprises precast concrete wall panels 11 at two sides, and a cavity 12 is formed between the two precast concrete wall panels 11. Only edge member vertical constructional steel bars 13 with small diameters are arranged in the precast concrete wall panel 11, the edge member vertical constructional steel bars 13, edge member stirrups 14 and edge member tie bars 15 form a hidden column steel bar framework, and the upper end and the lower end of each edge member vertical constructional steel bar 13 do not extend out of the precast concrete wall panel 11 and do not participate in structural stress calculation; the edge member stirrup 14 and edge member tie bar 15 can be constructed in accordance with the common cast-in-place shear wall.

A single row of large-diameter vertical steel bars are arranged in the cavity 12 and used as edge component vertical stress steel bars 16 to participate in structural stress calculation, the upper layer edge component vertical stress steel bars 16 and the lower layer edge component vertical stress steel bars 16 are directly connected in the cavity 12 through steel bar connectors 161, stress is reliable, and the control of the steel bar using amount is facilitated. That is, the present invention uses the large-diameter vertical stressed steel bars 16 of the edge member arranged in the cavity 12 to replace the stressed vertical steel bars 18 of the edge member in the precast wall with smaller diameter arranged in the precast concrete wall panel 11 of the existing superposed shear wall.

In the present invention, the small diameter is defined as a diameter of not more than 10mm, and the large diameter is defined as a diameter of not less than 18 mm. Those skilled in the art will appreciate that similar parameter definitions may be given in accordance with the functional requirements described above.

Referring to fig. 2, fig. 3, fig. 4 and fig. 5, the vertical stressed steel bars 16 of the edge members can be arranged in the cavity 12 in a single row along the thickness center line of the wall, and the area of the steel bars meets the checking and calculating requirement of the compressive bearing capacity of the front section of the shear wall, or replaces a plurality of vertical steel 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 meets the requirement of the current specification on the minimum reinforcement ratio of the vertical steel bars of the edge members.

And post-pouring concrete in the cavity 12 to form the superposed embedded column. With the help of the structure, the standardization of the prefabricated wall reinforcement cage can be realized, the production efficiency of the prefabricated wall is improved, and the quality control is facilitated.

In the cavity 12, the vertically stressed steel bars 16 of the upper and lower layer edge members can be connected at the same height by using the steel bar joint 161, namely, the joint percentage in the same connecting section is 100%, and at the moment, the performance of the steel bar joint 161 should meet the requirement of the current specification; the reinforcement joints 161 can be connected at staggered distances, so that 100% connection in the same connection section is avoided, and the requirement on the performance of the reinforcement joints 161 is lowered, as shown in fig. 6 and 7.

When the area of the reinforcing bar required by the requirement of checking the compressive bearing capacity of the front section of the shear wall is large, two edge member vertical stressed reinforcing bars 16 are configured according to the figures 1 and 2, so that the diameter of the reinforcing bar is large, the construction of a reinforcing bar joint 161 and the post-cast concrete pouring in the cavity 12 are not facilitated, at the moment, three or more edge member vertical stressed reinforcing bars 16 can be configured in the cavity 12 to control the diameter of the reinforcing bar, and the reinforcing bar distribution principle is the same as that in the prior art as shown in figures 8 and 9.

In the invention, the edge member stirrup 14 can adopt a welded closed hoop, and considering that after the edge member vertical stressed steel bars 16 are arranged in the cavity 12, the steel bars in the cavity 12 are less, and the mutual interference of the steel bars is less, as shown in fig. 10, the edge member stirrup 14 can also adopt a common 135-degree hook stirrup.

The reinforcement bar coupler 161 preferably is a straight thread coupler, and other forms of reinforcement bar coupler may be used on the premise of reliable technology.

Referring to fig. 1, 2, 3 and 4, the invention further provides a prefabricated wall body adopting the superposed embedded columns with the large-diameter edge member vertical stress reinforcing steel bars arranged in the cavity, and the prefabricated wall body comprises a superposed embedded column area 1 and a wall body area 2, wherein the superposed embedded columns are adopted in the superposed embedded column area 1, and the prefabricated concrete wall plate 11 extends to form the wall body area 2. The structure of the wall body area 2 is consistent with that of the existing superposed shear wall, and the vertically distributed reinforcing steel bars 22 of the upper and lower prefabricated walls are connected in an indirect lap joint mode.

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

The precast concrete wallboards 11 on two sides of the precast wall can be connected by adopting the steel bar trusses 23, and can also be connected by adopting concrete longitudinal ribs or a planar steel bar welding net, namely, the invention further optimizes and improves the structure that the superposed hidden column area 1 can be used for various superposed shear walls such as the existing double-sided superposed shear wall, EVE precast hollow wallboards, SPCS steel bar welding net superposed shear wall, longitudinal rib superposed shear wall and the like, and has strong universality.

The prefabricated production process of the prefabricated wall is consistent with that of the existing prefabricated wall, and the recommended site construction and installation process comprises the following steps: connecting the vertical stressed steel bars 16 of the edge members in the cavity 12 of the layer with the vertical stressed steel bars 16 of the edge members extending out of the lower layer by using steel bar joints 161, and then hoisting, wherein the position of the vertical stressed steel bars 16 of the edge members in the cavity 12 of the layer needs to be controlled, so that the prefabricated wall is prevented from being interfered to fall, and the verticality and the levelness of the prefabricated wall are adjusted; and erecting a horizontal joint 31 template, pouring concrete in the cavity 12 of the prefabricated wall, and maintaining and removing the template.

If the number of the vertical stressed steel bars 16 of the edge member in the cavity 12 is large, the site construction installation process is inconvenient to adopt, at the moment, the prefabricated wall can be hoisted firstly according to the graph 11, the graph 12, the graph 13 and the graph 14, then the vertical stressed steel bars 16 of the edge member of the layer are penetrated, a notch 17 needs to be reserved at the root of the prefabricated concrete wallboard 11 as an installation hand hole, the connection of the vertical stressed steel bars 16 of the edge member of the upper layer and the lower layer is realized by adopting a steel bar connector 161 in the installation hand hole, the steel bar connector 161 is suitable to be arranged at the same height, so that the size of the reserved notch 17 is controlled, and the site formwork support.

As shown in fig. 11, 12 and 13, the gap 17 can be formed by occupying a fixed occupying block, and the size of the gap satisfies the installation and construction requirements of the reinforcement joint 161 in the cavity 12; within the range of the gap 17, the vertical structural steel bar 3 of the edge component is cut off, and the stirrup 14 of the edge component and the horizontally distributed steel bar are continuous.

As shown in fig. 15 and 16, the prefabricated wall of the present invention is a structural wall, and can be used for an exterior wall or an interior wall of a building. The precast concrete wall plate 11, the heat insulation plate 4 and the precast concrete outer leaf plate 5 can be integrally precast in a factory to form a precast sandwich heat insulation superposed wall, so that decoration, heat insulation and structure integration of the precast outer wall are realized, and at the moment, the precast concrete wall plate 11 can be arranged only on the inner side of the wall; the precast concrete wall plate 11 and the precast concrete outer blade plate 5 are tied by adopting a tie piece 6.

In an embodiment of the present invention, two edge member vertical stressed steel bars 16 are configured in the cavity 12, and when replacement is performed according to the principle of equal area replacement of steel bars of the same strength grade, the suggested replacement principle is that 1 edge member vertical stressed steel bar 16 with a diameter of 22mm and 1 edge member vertical stressed steel bar 16 with a diameter of 20mm replaces 6 steel bars with a diameter of 12mm, 1 edge member vertical stressed steel bar 16 with a diameter of 28mm and 1 edge member vertical stressed steel bar 16 with a diameter of 20mm replaces 6 steel bars with a diameter of 14mm, 2 edge member vertical stressed steel bars 16 with a diameter of 28mm replaces 6 steel bars with a diameter of 16mm, and 2 edge member vertical stressed steel bars 16 with a diameter of 32mm replaces 6 steel bars with a diameter of 18 mm.

Fig. 17, 18 and 19 show the construction of the existing prefabricated wall with the edge member vertical steel bar lap joint, namely a preferred comparative example of the invention. The invention is compared with a comparative example, see table 1.

TABLE 1

In conclusion, only stirrups and vertical constructional steel bars are arranged in the hidden column, and the upper end and the lower end of each vertical constructional steel bar do not extend out of the prefabricated wall and do not participate in structural stress calculation; a single row of large-diameter vertical steel bars are arranged in the cavity and used as vertical stressed steel bars of wall edge members to participate in structural stress calculation, and the vertical stressed steel bars of the upper layer edge member and the lower layer edge member are connected in the cavity through steel bar joints. Compared with the existing structure, the prefabricated wall with the structure has the advantages that the interference of vertical steel bars of edge members to the production of the prefabricated wall can be avoided in the production stage of the prefabricated wall, and the production of the prefabricated wall is facilitated; in the field installation stage, the influence of double rows of vertical connecting steel bars in the superposed hidden columns on the installation precision of the prefabricated wall can be avoided, and the installation efficiency and the installation precision of the prefabricated wall can be improved; the vertical stressed steel bars of the large-diameter edge component in the cavity are directly connected by adopting the steel bar joint, the stress is reliable, and the using amount of the vertical steel bars of the wall body is not increased.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The superposed hidden column with the large-diameter vertical stressed steel bars in the cavity comprises precast concrete wallboards (11) on two sides, and a cavity (12) is formed between the two precast concrete wallboards (11), and is characterized in that only edge component vertical constructional steel bars (13) with small diameters, edge component stirrups (14) and edge component tie bars (15) are arranged in the precast concrete wallboards (11) to form a hidden column steel bar framework, and the upper end and the lower end of each edge component vertical constructional steel bar (13) do not extend out of the precast concrete wallboards (11) and do not participate in structural stress calculation; a single row of large-diameter vertical steel bars are configured in the cavity (12) and used as edge member vertical stress steel bars (16) to participate in structural stress calculation, the upper layer edge member vertical stress steel bars (16) and the lower layer edge member vertical stress steel bars (16) are directly connected in the cavity (12) through steel bar joints (161), and concrete is poured in the cavity (12) in situ to form a superposed hidden column.

2. The overlapped concealed column with the large-diameter vertical stressed steel bars arranged in the cavity according to claim 1, wherein the small diameter means that the diameter is not more than 10mm, and the large diameter means that the diameter is not less than 18 mm.

3. The folding embedded column for arranging large-diameter vertical stress steel bars in a cavity according to claim 1, wherein the vertical stress steel bars (16) of the edge members are arranged in a single row in the cavity (12) along the thickness center line of the wall body.

4. The superposed embedded column with the large-diameter vertical stress steel bars arranged in the cavity according to the claim 1 or 3 is characterized in that the reinforcement area of the vertical stress steel bars (16) of the edge component meets the checking and calculating requirement of the compressive bearing capacity of the front section of the shear wall, or replaces a plurality of vertical steel bars of the edge component of the traditional shear wall according to the principle of equal area replacement of the steel bars with the same strength grade, or meets the requirement of the current specification on the minimum reinforcement rate of the vertical steel bars of the edge component.

5. The superposed embedded column with the large-diameter vertical stressed steel bars arranged in the cavity according to claim 1, characterized in that the vertical stressed steel bars (16) of the upper and lower layer edge members are connected by steel bar joints (161) at the same height in the cavity (12), namely the joint percentage in the same connecting section is 100%; or the staggered distance is connected by adopting the steel bar joint (161), so that 100 percent of connection in the same connection section is avoided, and the requirement on the performance of the joint is reduced.

6. The overlapping concealed post with large-diameter vertical stressed steel bars arranged in the cavity according to claim 1, wherein when the diameter of the edge member vertical stressed steel bar (16) is larger than 28mm, three or more edge member vertical stressed steel bars (16) are arranged in the cavity (12) to avoid the diameter of the steel bar from being too large.

7. The prefabricated wall adopting the overlapped embedded column for arranging the large-diameter vertically stressed steel bars in the cavity of claim 1 comprises an overlapped embedded column area (1) and a wall body area (2), wherein the overlapped embedded column area (1) adopts the overlapped embedded column, and the prefabricated concrete wall plate (11) extends to form the wall body area (2).

8. The prefabricated wall according to claim 7, wherein the vertical stressed steel bars (16) of the edge members in the cavity (12) of the floor are connected with the vertical stressed steel bars (16) of the edge members extending out of the lower floor by steel bar joints (161) and then hoisted; or after the prefabricated wall is installed, the vertical stressed steel bars (16) of the edge members penetrate through the cavity (12) of the superposed hidden column area (1), wherein a notch (17) is reserved at the root part of the prefabricated concrete wall plate (11) and serves as an installation hand hole, and the vertical stressed steel bars (16) of the edge members on the upper layer and the lower layer are connected in the installation hand hole through steel bar connectors (161).

9. Prefabricated wall according to claim 7, characterized in that the prefabricated concrete panels (11) are connected by steel trusses (23) or by longitudinal concrete ribs or welded plain mesh.

10. The prefabricated wall according to claim 7, wherein the prefabricated concrete wall panels (11), the heat insulation boards (4) and the prefabricated concrete outer leaf boards (5) are integrally prefabricated in a factory to form a prefabricated sandwich heat insulation laminated wall, so that decoration, heat insulation and structural integration of an outer wall are realized; the precast concrete wallboard (11) and the precast concrete outer leaf plate (5) are tied by adopting a heat-insulating tie piece (6), and the precast concrete wallboard (11) is only arranged on the inner side of the wall body.

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