CN109610684B - High-efficient arrangement of reinforcement and connection precast shear force wall - Google Patents
High-efficient arrangement of reinforcement and connection precast shear force wall Download PDFInfo
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- CN109610684B CN109610684B CN201811464913.3A CN201811464913A CN109610684B CN 109610684 B CN109610684 B CN 109610684B CN 201811464913 A CN201811464913 A CN 201811464913A CN 109610684 B CN109610684 B CN 109610684B
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- steel bars
- reinforcement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
- E04B1/6125—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface
Abstract
A high-efficiency reinforcement and connection prefabricated shear wall comprises main stressed vertical steel bars arranged on the outermost side of an edge member, constructed vertical steel bars arranged on the inner side of the edge member, additional connecting steel bars arranged in the middle of the constructed vertical steel bars of the edge member, edge member stirrups and tie bars uniformly distributed along the height direction of the edge member, vertically distributed steel bars uniformly distributed on a wall body, horizontally distributed steel bars distributed along the height direction of the wall and concrete filled in the wall body; based on the idea of separating and configuring the reinforcing steel bars with different functions, the stressed vertical reinforcing steel bars of the edge members are configured on the outermost side, so that the stressed vertical reinforcing steel bars can effectively play a role in bending resistance, the number of reinforcing steel bar joints is reduced, the incremental cost of the prefabricated shear wall is effectively controlled, the requirements on the processing and mounting precision of the prefabricated shear wall are reduced, and the operation efficiency and the site construction efficiency of a factory production line are improved; the vertical steel bars are configured on the inner sides of the edge members, and the stirrup and the tie bar configuration of the edge members are consistent with those of the cast-in-place wall, so that the elastic-plastic deformation capability of the wall body is ensured.
Description
Technical Field
The invention belongs to the technical field of buildings, relates to a prefabricated shear wall, and particularly relates to an efficient reinforcement and connection prefabricated shear wall.
Background
The assembled integral shear wall structure is a special assembled residential building structure form in China and is suitable for the development requirement of China at the present stage. The connection of the vertical steel bars of the upper and lower layers of the prefabricated shear wall is the key for ensuring the vertical continuity of the prefabricated shear wall, and the side resistance of the structure is directly influenced. At the same time, rebar junctions are an important component of the incremental cost of fabricated structures. Considering that the research on the reinforcement structure of the edge component of the prefabricated wall is less at present, the national standard suggests that the vertical reinforcement and the stirrup reinforcement structure of the edge component of the prefabricated wall refer to the design of a cast-in-place shear wall, and meanwhile, the vertical reinforcements of the edge component are required to be connected one by one.
The vertical steel bars in the cast-in-place shear wall are connected by binding and overlapping or mechanical connection of threaded sleeves, so that the connection is easy and has no control factors, and the vertical steel bars of the edge member of the cast-in-place shear wall are generally more in number and smaller in diameter. The cost of the steel bar joint in the fabricated structure is obviously higher than that of a cast-in-place structure joint, and even higher than the material cost of connecting steel bars. When the prefabricated wall edge member refers to the cast-in-place wall reinforcement, on one hand, the number of joints is large, the connection cost is high, the requirements on the machining and installation precision of the prefabricated member are high, and the construction efficiency of factory prefabrication and field installation is influenced; on the other hand, taking a common grouting sleeve as an example, the absolute values of the inner diameter and the anchoring length of the small-diameter steel bar sleeve are lower than those of the large-diameter grouting sleeve, so that the requirement on joint grouting construction quality is higher. The aim of equal cast-in-place seismic performance is achieved only through the equal cast-in-place reinforcement structure, and understanding of the equal cast-in-place connotation and popularization of the assembled shear wall structure by designers are influenced to a certain extent.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an efficient reinforcement and connection prefabricated shear wall, which can effectively reduce the number of vertical reinforcement joints, effectively control the incremental cost of the prefabricated shear wall, reduce the requirements on the processing and mounting precision of the prefabricated shear wall, improve the operation efficiency and the field construction efficiency of a factory production line, and ensure the elastic-plastic deformation capacity of the prefabricated shear wall.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a high-efficient arrangement of reinforcement and connection precast shear wall, including the edge component, the wall body, arrange in the main atress vertical reinforcement 1 of edge component outside, arrange in the inboard structure vertical reinforcement 2 of edge component, arrange in the additional connecting reinforcement 3 of edge component structure vertical reinforcement 2 centre, edge component stirrup 4 and the lacing wire 5 of edge component direction of height evenly distributed, evenly distributed is in the vertical distribution reinforcing bar 7 of wall body and its connecting reinforcement 8, along the horizontal distribution reinforcing bar 9 of wall height arrangement and fill in the concrete 10 of wall body.
The shear wall edge member mainly has two structural functions, namely, the vertical steel bars intensively arranged on the edge member provide bending resistance, and the stirrups in the edge member restrain concrete to improve the deformation capacity of wall limbs. The vertical steel bars of the edge member of the cast-in-place shear wall are uniformly arranged in the edge member area, and the vertical steel bars and the stirrups are combined and configured to ensure the two structural functions of the edge member. Based on the thought of different functional steel bar separation configurations, the outermost side of the edge member of the prefabricated shear wall is provided with two main stressed vertical steel bars 1 to ensure the bending resistance of the wall limb, the inner side of the edge member is provided with four constructed vertical steel bars 2, the distance between the outermost main stressed vertical steel bar 1 and the inner constructed vertical steel bar 2 of the edge member is consistent with that of the traditional cast-in-place shear wall, and further the configuration of the edge member stirrups 4 and the tie bars 5 is consistent with that of the cast-in-place shear wall, so that a stirrup constraint effect which is equal to that of the cast-in-place shear wall is formed on the core area concrete 10 of the edge member of the prefabricated wall, the compression performance of the core area concrete 10.
Vertical additional connecting steel bars 3 are arranged in the middle of the 4 vertical steel bars 2, the additional connecting steel bars 3 are located at the bottom and the top of the wall body and are in indirect lap joint with the vertical steel bars 2 in the same edge member, and the area of the additional connecting steel bars 3 is equal to the total area of the 4 vertical steel bars 2.
The main stressed vertical steel bars 1 and the additional connecting steel bars 3 of the upper and lower layer prefabricated wall edge components are connected by steel bar joints 6, and the steel bar joints 6 are sleeve grouting joints, mechanical joints, spiral stirrup constraint slurry anchor joints or metal corrugated pipe constraint slurry anchor joints.
The vertically distributed reinforcing steel bars 7 are connected by adopting quincunx or single-row additional reinforcing steel bars, the connecting reinforcing steel bars 8 are connected by adopting reinforcing steel bar joints 6, and the reinforcing steel bar joints 6 are sleeve grouting joint joints, mechanical joint joints, spiral stirrup constraint slurry anchor joints or metal corrugated pipe constraint slurry anchor joints.
When the steel bar joint 6 is a sleeve grouting connection joint, a spiral stirrup restraint grout anchor joint or a metal corrugated pipe restraint grout anchor joint, a common partition mechanical grouting method or a grout setting and manual grouting method is adopted; when grouting and manual grouting are adopted, special mortar is laid at the joint surface position before the prefabricated wall is hoisted, grouting construction is carried out on joints one by grouting equipment after the prefabricated wall is hoisted in place, and grouting quality is controlled.
Compared with the prior art, the invention has the advantages that:
(1) under the condition of ensuring that the bearing capacity of the prefabricated shear wall in the plane is not changed, the consumption of the vertical steel bars of the edge components is not increased basically, and the total cost of the prefabricated shear wall is lower than that of the prefabricated shear wall formed by connecting the vertical steel bars of the edge components one by one.
(2) The number of vertical steel bar joints of the edge member is obviously reduced, the incremental cost of the prefabricated shear wall can be effectively controlled, the requirements on the processing and mounting precision of the prefabricated shear wall are reduced, and the operation efficiency and the site construction efficiency of a factory production line are improved.
(3) The diameter of the vertical connecting steel bars of the edge components is improved compared with the prefabricated shear wall in which the vertical steel bars of the edge components are connected one by one, so that the joint connection is convenient, and the joint construction quality is easy to guarantee.
(4) The vertical steel bars are arranged on the inner sides of the edge members, the arrangement of the stirrups and the tie bars of the edge members is consistent with that of a cast-in-place shear wall, and the elastic-plastic deformation capacity of the wall body can be guaranteed.
Drawings
FIG. 1 is a schematic structural view of the high-efficiency reinforcing bars and the connecting prefabricated shear wall when vertically distributed reinforcing bars are connected in a quincunx shape.
Fig. 2 is a schematic sectional view taken along line a-a in fig. 1.
Fig. 3 is a schematic cross-sectional view B-B of fig. 1.
Fig. 4 is a schematic cross-sectional view of C-C in fig. 1.
Fig. 5 is a schematic cross-sectional view taken along line D-D of fig. 1.
Fig. 6 is a schematic cross-sectional view E-E of fig. 1.
Fig. 7 is a schematic sectional view F-F of fig. 1.
FIG. 8 is a schematic structural view of the high-efficiency reinforcement and connection prefabricated shear wall of the present invention in which vertically distributed reinforcing steel bars are connected by single additional reinforcing steel bars.
Fig. 9 is a schematic sectional view taken along line a-a in fig. 8.
Fig. 10 is a schematic cross-sectional view B-B of fig. 8.
Fig. 11 is a schematic cross-sectional view of C-C in fig. 8.
Fig. 12 is a schematic cross-sectional view taken along line D-D of fig. 8.
Fig. 13 is a schematic cross-sectional view E-E of fig. 8.
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, 2, 3, 4, 5, 6 and 7, the efficient reinforcement and connection precast shear wall is a first preferred embodiment of the present invention, and includes an edge member, a wall body, a main stressed vertical reinforcement 1 disposed at the outermost side of the edge member, a structural vertical reinforcement 2 disposed at the inner side of the edge member, an additional connection reinforcement 3 disposed in the middle of the structural vertical reinforcement 2 of the edge member, an edge member stirrup 4 and a tie bar 5 uniformly distributed along the height direction of the edge member, a vertically distributed reinforcement 7 and a connection reinforcement 8 thereof uniformly distributed on the wall body, a horizontally distributed reinforcement 9 disposed along the height of the wall body, and concrete 10 filled in the wall body. The outmost side of the edge member is provided with two main stressed vertical steel bars 1 to ensure the bending resistance of the wall, the inner side of the edge member is provided with four structural vertical steel bars, the distance between the outmost main stressed vertical steel bars 1 and the inner structural vertical steel bars 2 is consistent with that of a traditional cast-in-place shear wall, and further the configuration of the edge member stirrups 4 and the arrangement of the lacing bars 5 are consistent with that of the cast-in-place shear wall, so that a stirrup restraining effect which is equal to that of the cast-in-place shear wall is formed on the prefabricated wall edge member core area concrete 10, the compression performance of the edge member core area concrete 10 is improved, and the elastic. The additional connecting steel bars 3 are arranged at the bottom and the top of the wall body and are indirectly connected with the four structural vertical steel bars 2 on the inner side of the edge member in an overlapping mode, and the arrangement principle is that the area of the additional connecting steel bars 3 is equal to the total area of the four structural vertical steel bars 2. The additional connecting steel bars 3 are tied and positioned with the prefabricated wall steel bar cage by adopting tie bars. The vertically distributed reinforcing steel bars are connected in a quincunx manner suggested by design specifications such as 'prefabricated concrete building technical standard' and 'prefabricated concrete structure technical regulation', and the structures of the unconnected vertically distributed reinforcing steel bars 7 and the connected vertically distributed reinforcing steel bars 8 meet the requirements of the current design specifications. The main atress vertical reinforcement 1 in edge component outermost side, the additional connecting reinforcement 3 at prefabricated shear wall top and the vertical distribution reinforcing bar 8 of connection stretch out prefabricated shear wall top to adopt the steel bar joint with corresponding reinforcing bar in the prefabricated wall of upper strata to connect. The steel bar joint 6 is a sleeve grouting connection joint, and can adopt a common partition mechanical grouting method, or can adopt grouting and manual grouting. When grouting and manual grouting are adopted, special mortar is laid at the joint surface position before the prefabricated wall is hoisted, grouting construction is carried out on joints one by grouting equipment after the prefabricated wall is hoisted in place, and grouting quality is controlled.
The high-efficiency reinforcement and connection precast shear wall shown in fig. 8, 9, 10, 11, 12 and 13 is a second preferred embodiment of the present invention, and includes an edge member, a wall body, main stressed vertical rebars 1 arranged at the outermost side of the edge member, construction vertical rebars 2 arranged at the inner side of the edge member, additional connecting rebars 3 arranged in the middle of the construction vertical rebars 2 of the edge member, edge member stirrups 4 and tie bars 5 uniformly distributed along the height direction of the edge member, vertical distribution rebars 7 and connecting rebars 8 thereof uniformly distributed on the wall body, horizontal distribution rebars 9 arranged along the height of the wall body, and concrete 10 filled in the wall body. The outmost side of the edge member is provided with two main stressed vertical steel bars 1 to ensure the bending resistance of the wall, the inner side of the edge member is provided with four structural vertical steel bars, the distance between the outmost main stressed vertical steel bars 1 and the inner structural vertical steel bars 2 is consistent with that of a traditional cast-in-place shear wall, and further the configuration of the edge member stirrups 4 and the arrangement of the lacing bars 5 are consistent with that of the cast-in-place shear wall, so that a stirrup restraining effect which is equal to that of the cast-in-place shear wall is formed on the prefabricated wall edge member core area concrete 10, the compression performance of the edge member core area concrete 10 is improved, and the elastic. The additional connecting steel bars 3 are arranged at the bottom and the top of the wall body and are indirectly connected with the four structural vertical steel bars 2 on the inner side of the edge member in an overlapping mode, and the arrangement principle is that the area of the additional connecting steel bars 3 is equal to the total area of the four structural vertical steel bars 2. The vertical distribution reinforcing steel bars are connected by adopting single-row additional reinforcing steel bars suggested by design specifications such as 'prefabricated concrete building technical standard' and 'prefabricated concrete structure technical regulation', connecting reinforcing steel bars 8 are arranged at the bottom and the top of the wall body, one connecting reinforcing steel bar 8 is indirectly lapped with four unconnected vertical distribution reinforcing steel bars 7, and the arrangement principle is that the area of the connecting reinforcing steel bar 8 is equal to the total area of the four unconnected vertical distribution reinforcing steel bars 7. The additional connecting steel bars 3 and the connecting steel bars 8 are tied and positioned with the prefabricated wall reinforcement cage by adopting tie bars. The main atress vertical reinforcement 1 in edge component outermost side, the additional connecting reinforcement 3 at prefabricated shear wall top and the vertical distribution reinforcing bar connecting reinforcement 8 at top stretch out prefabricated shear wall top to adopt the steel bar splice connection with corresponding reinforcing bar in the prefabricated wall of upper strata. The steel bar joint 6 is a sleeve grouting connection joint, and can adopt a common partition mechanical grouting method, or can adopt grouting and manual grouting. When grouting and manual grouting are adopted, special mortar is laid at the joint surface position before the prefabricated wall is hoisted, grouting construction is carried out on joints one by grouting equipment after the prefabricated wall is hoisted in place, and grouting quality is controlled.
The design of the high-efficiency reinforcement and connection prefabricated shear wall of the invention should comply with the relevant design specification, perform relevant calculation of normal section bending bearing capacity, oblique section shearing resistance bearing capacity and the like, and check and calculate the construction requirements of axial compression ratio, reinforcement hoop characteristic value, reinforcement lap joint length and the like. And considering the contribution of the constructed vertical steel bars when calculating the reinforcement ratio of the vertical steel bars of the edge member.
The above description is only a 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 (7)
1. The utility model provides a high-efficient arrangement of reinforcement and connection precast shear wall, including the edge component, the wall body, arrange in main atress vertical reinforcement (1) in the edge component outside, arrange in the inboard structure vertical reinforcement (2) of edge component, arrange in additional connecting reinforcement (3) in the middle of edge component structure vertical reinforcement (2), edge component stirrup (4) and lacing wire (5) of edge component direction of height evenly distributed, evenly distributed in vertical distribution reinforcing bar (7) and its connecting reinforcement (8) of wall body, horizontal distribution reinforcing bar (9) and the concrete (10) of packing in the wall body of edge height arranging.
2. The high-efficiency reinforced and connected precast shear wall according to claim 1, characterized in that the mainly stressed vertical steel bars (1) are arranged at the outermost side of each edge member by 2, so as to ensure the bending resistance of the wall limbs.
3. The efficient reinforcement and connection prefabricated shear wall as claimed in claim 1, wherein the spacing between the outermost main stressed vertical steel bars (1) and the inner structural vertical steel bars (2) of the edge members is consistent with that of a traditional cast-in-place shear wall, so as to ensure that the arrangement of the stirrups (4) and the tie bars (5) of the edge members is consistent with that of the cast-in-place shear wall, form a stirrup restraining effect equivalent to that of the cast-in-place shear wall on the concrete (10) in the core area of the edge members of the prefabricated wall, improve the compression performance of the concrete (10) in the core area of the edge members, and ensure the elastic-plastic deformation capability of the wall.
4. The efficient reinforcement and connection precast shear wall according to claim 1, characterized in that the construction vertical steel bars (2) are arranged with 4 inside each edge member, vertical additional connecting steel bars (3) are arranged among the 4 construction vertical steel bars (2), the additional connecting steel bars (3) are arranged at the bottom and the top of the wall body and are in indirect lap joint with the construction vertical steel bars (2) in the same edge member, and the area of the additional connecting steel bars (3) is equal to the total area of the 4 construction vertical steel bars (2).
5. The high-efficiency reinforcement and connection prefabricated shear wall according to claim 4, wherein the main stressed vertical steel bars (1) and the additional connecting steel bars (3) of the edge members of the upper and lower prefabricated walls are connected by steel bar joints (6), and the steel bar joints (6) are sleeve grouting joints, mechanical joints, spiral stirrup restraint grout anchor joints or metal corrugated pipe restraint grout anchor joints.
6. The efficient reinforcement and connection prefabricated shear wall according to claim 1, wherein the vertically distributed steel bars (7) are connected by quincunx or single-row additional steel bars, the connecting steel bars (8) are connected by steel bar joints (6), and the steel bar joints (6) are sleeve grouting joints, mechanical joints, spiral stirrup restraint grout anchor joints or metal corrugated pipe restraint grout anchor joints.
7. The high-efficiency reinforcement and connection prefabricated shear wall according to claim 5 or 6, wherein when the reinforcement joints (6) are sleeve grouting connection joints, spiral stirrup constraint grout anchor joints or metal corrugated pipe constraint grout anchor joints, a common partition mechanical grouting method or a grout setting and manual grouting method is adopted; when grouting and manual grouting are adopted, special mortar is laid at the joint surface position before the prefabricated wall is hoisted, grouting construction is carried out on joints one by grouting equipment after the prefabricated wall is hoisted in place, and grouting quality is controlled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811464913.3A CN109610684B (en) | 2018-12-03 | 2018-12-03 | High-efficient arrangement of reinforcement and connection precast shear force wall |
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| CN201811464913.3A CN109610684B (en) | 2018-12-03 | 2018-12-03 | High-efficient arrangement of reinforcement and connection precast shear force wall |
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| CN109610684A CN109610684A (en) | 2019-04-12 |
| CN109610684B true CN109610684B (en) | 2020-06-30 |
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| CN111236527A (en) * | 2020-03-26 | 2020-06-05 | 沈阳促晋科技有限公司 | Fabricated concrete wallboard with steel bars avoiding and reinforcing connection |
| CN111894205A (en) * | 2020-07-31 | 2020-11-06 | 上海宝冶集团有限公司 | Construction method for separating one from another for vertical steel bars of shear wall |
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| JP2759010B2 (en) * | 1991-09-27 | 1998-05-28 | 五洋建設株式会社 | Precast concrete wall column joining method |
| CN205804745U (en) * | 2016-05-30 | 2016-12-14 | 上海建工二建集团有限公司 | A kind of precast concrete shear wall component |
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