CN109868919B - Connection structure of vertical piece of superimposed shear wall - Google Patents
Connection structure of vertical piece of superimposed shear wall Download PDFInfo
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- CN109868919B CN109868919B CN201910142436.7A CN201910142436A CN109868919B CN 109868919 B CN109868919 B CN 109868919B CN 201910142436 A CN201910142436 A CN 201910142436A CN 109868919 B CN109868919 B CN 109868919B
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Abstract
The invention relates to a connecting structure for vertical abutted seams of a superposed shear wall. According to the invention, horizontal stirrups are arranged in vertical abutted seams of adjacent superposed shear walls along the height direction of the walls, horizontal reinforcing steel bars in superposed layers of inner leaves and outer leaves in the superposed shear walls are extended to the vertical abutted seams for a certain length, then are bent and rotated to extend to a cavity layer of the superposed shear walls to form semi-open annular horizontal reinforcing steel bars, the horizontal stirrups in the vertical abutted seams are placed on the semi-open annular horizontal reinforcing steel bars and are bound to form a plurality of closed hoops, vertical stress reinforcing steel bars are inserted into the closed hoops, and concrete is poured into the cavity layer of the superposed wall plate and the vertical abutted seams to anchor the semi-open annular horizontal reinforcing steel bars. According to the invention, the vertical stressed steel bars are inserted into the formed closed hoop, so that the later-poured concrete in the vertical abutted seam and the superposed shear walls on the two sides form reliable connection, the coordinated deformation capacity of the vertical abutted seam and the superposed shear walls on the two sides is improved, and the integral stress performance of the vertical abutted seam and the superposed shear walls on the two sides is ensured.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a connecting structure for vertical abutted seams of a superposed shear wall.
Background
The superposed shear wall structure serving as an assembly type building structure system has the advantages of light installation, good overall performance and wide application prospect. Vertical abutted seams exist between two adjacent prefabricated components of the superposed shear wall, and the vertical abutted seams are provided with concrete post-pouring sections. The connecting structure of the vertical abutted seams of the superposed shear wall is a horizontal connecting structural measure for horizontally connecting two adjacent prefabricated components of the superposed shear wall and a middle vertical concrete post-pouring section into a whole superposed shear wall.
In the traditional prefabricated component of the superposed shear wall, the connection structure of the vertical splicing seams of the superposed shear wall mainly adopts a mode that a cavity layer is additionally provided with steel bars for overlapping, and horizontal steel bars in the superposed shear wall do not extend outwards. The laminated shear wall adopting the connection technology has certain defects in the connection structure although the manufacture of the components is convenient, and comprises the following components: (1) the prefabricated superposed layers of the inner blade and the outer blade of the superposed shear wall have vertical through seams at the left and right sides of the vertical abutted seam, the horizontal connecting reinforcing steel bars are internally contracted, and the connecting function and the structural integrity are weakened to a certain extent; (2) in addition, the on-site positioning and binding of the steel bars are not easy to control, and the reliability of vertical splicing joint connection cannot be effectively ensured.
Disclosure of Invention
Aiming at the problems, the connecting structure for the vertical splicing seam of the superposed shear wall which is reasonable in stress and reliable in connection is provided.
The specific technical scheme is as follows:
a connecting structure of vertical abutted seams of superposed shear walls has the characteristics that horizontal stirrups are arranged in the vertical abutted seams of adjacent superposed shear walls along the height direction of the walls, horizontal reinforcements in superposed layers of inner leaves and outer leaves in the superposed shear walls are bent and rotated after extending to a certain length in the vertical abutted seams to form semi-open annular horizontal reinforcements in cavity layers of the superposed shear walls, the horizontal stirrups in the vertical abutted seams are overlapped on the semi-open annular horizontal reinforcements and bound to form a plurality of closed hoops, vertical stressed reinforcements are inserted into the closed hoops, and concrete is poured into the cavity layers and the vertical abutted seams of the superposed shear walls to anchor the horizontal stirrups, the semi-open annular horizontal reinforcements and the vertical stressed reinforcements and connect the adjacent superposed shear walls into a whole.
The connecting structure of the vertical splicing of the superposed shear wall also has the characteristic that the horizontal steel bars in the superposed layers of the inner leaves and the outer leaves in the superposed shear wall extend to the vertical splicing for a certain length, then are bent for 90 degrees, extend to a distance of 15mm-25mm from the central axis, then are rotated for 90 degrees and extend to the cavity layer of the superposed shear wall in parallel to form semi-open annular horizontal steel bars.
The connecting structure of the vertical splicing seam of the superposed shear wall also has the characteristic that the anchoring length of the horizontal steel bar in the cavity layer of the superposed shear wall, which is rotated and extended to the superposed shear wall, is not less than 1.2laE。
The connecting structure of the vertical splicing seams of the superposed shear wall also has the characteristic that the semi-open annular horizontal steel bars in the vertical splicing seams are not intersected with each other and are not contacted with each other.
The beneficial effect of above-mentioned scheme is:
1) by inserting the vertical stressed steel bars into the closed hoop, the later-poured concrete in the vertical abutted seams is reliably connected with the superposed shear walls on the two sides, the coordinated deformation capacity of the vertical abutted seams and the superposed shear walls on the two sides is improved, and the integral stress of the vertical abutted seams and the superposed shear walls on the two sides is ensured;
2) the horizontal steel bars are rotationally anchored in the cavity layer of the superposed shear wall, so that the horizontal steel bars transfer force reasonably, the shearing-resistant bearing capacity of the vertical abutted seam can be effectively improved, and local shearing damage is prevented;
3) the superposed shear wall component with the semi-open type annular horizontal steel bars can be produced in advance, the production and the manufacture are convenient, and the transportation and the stacking of the superposed shear wall component are not influenced by the semi-open type annular horizontal steel bars.
Drawings
Fig. 1 is a schematic cross-sectional structure view of a connection structure of vertical joints of a superposed shear wall provided in an embodiment of the present invention;
fig. 2 is a schematic layout of reinforcing bars in a connection structure of vertical abutted seams of a superposed shear wall provided in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
As shown in fig. 1 and 2, in the connecting structure of the vertical abutted seam of the superposed shear wall provided in the embodiment of the present invention, arranging horizontal stirrups 2 in vertical abutted seams 6 of adjacent superposed shear walls 1 along the height direction of the walls, extending horizontal steel bars 3 in inner and outer leaf superposed layers in the superposed shear walls 1 to the vertical abutted seams 6 for a certain length, bending by 90 degrees, extending to a distance of 15-25 mm from a central axis, turning by 90 degrees, extending in parallel to a cavity layer 7 of the superposed shear walls 1 to form semi-open annular horizontal steel bars, putting the horizontal stirrups 2 in the vertical abutted seams 6 on the semi-open annular horizontal steel bars and binding to form 4 closed hoops 4, and inserting vertical stressed steel bars 5 into the closed hoop 4, pouring concrete into the cavity layer 7 and the vertical abutted seams 6, anchoring the horizontal hooping 2, the semi-open annular horizontal steel bars and the vertical stressed steel bars 5, and connecting the adjacent superposed shear walls 1 to form a whole.
According to the invention, the superposed shear wall 1 can be pre-bent to obtain the superposed shear wall 1 with the semi-open type annular horizontal reinforcing steel bars, the transportation and the stacking of the superposed shear wall 1 are not influenced by the semi-open type annular horizontal reinforcing steel bars, and the pre-bending production mode enables the assembly construction to be convenient and rapid.
According to the invention, the vertical stressed steel bars 5 are inserted into the closed hoop 4, so that post-cast concrete in the vertical abutted seams 6 is reliably connected with the superposed shear walls 1 on the two sides; the semi-open type annular horizontal steel bars 8 are rotationally anchored in the cavity layer of the superposed shear wall, so that the connection is enhanced, the coordinated deformation capacity of post-cast concrete in the superposed shear wall 1 and the vertical abutted seam 6 is improved, and the integral stress performance of the superposed shear wall and the vertical abutted seam 6 is ensured; meanwhile, the semi-open type annular horizontal steel bars 8 are enabled to transfer force reasonably, the shearing-resistant bearing capacity of the vertical abutted seams 6 can be effectively improved, and local shearing damage is prevented.
In the invention, the anchoring length of the steel bar in the cavity layer 7 of the semi-open type annular horizontal steel bar 8 which extends to the superposed shear wall 1 in a rotating way is not less than 1.2laEThe semi-open type annular horizontal steel bars are guaranteed to effectively participate in the anti-shearing effect at the vertical splicing seams 6, and the requirement of the anti-seismic performance is met.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (4)
1. A connecting structure of vertical abutted seams of superposed shear walls is characterized in that horizontal stirrups are arranged in the vertical abutted seams of adjacent superposed shear walls along the height direction of the walls, horizontal steel bars in superposed layers of inner leaves and outer leaves in the superposed shear walls are bent and rotated to extend into a cavity layer of the superposed shear walls after extending to a certain length to form semi-open annular horizontal steel bars, the horizontal stirrups in the vertical abutted seams are overlapped on the semi-open annular horizontal steel bars and bound to form a plurality of closed hoops, inserting vertical stressed steel bars into the closed hoop, and pouring concrete into the cavity layer of the laminated shear wall and the vertical abutted seams to anchor the semi-open annular horizontal steel bars, the horizontal hooping and the vertical stressed steel bars and connect the adjacent laminated shear walls into a whole.
2. The connecting structure of the vertical abutted seams of the superposed shear wall according to claim 1, wherein the horizontal steel bars in the superposed layers of the inner leaves and the outer leaves in the superposed shear wall extend to the vertical abutted seams for a certain length, then are bent by 90 degrees, extend to a distance of 15mm-25mm from the central axis, then are rotated by 90 degrees and extend in parallel to the cavity layer of the superposed shear wall to form semi-open annular horizontal steel bars.
3. The joint construction of the vertical abutted seam of the superposed shear wall according to claim 2, wherein the anchoring length of the horizontal reinforcing steel bar in the superposed shear wall which is turned back and extended into the cavity layer of the superposed shear wall is not less than 1.2laE。
4. A connecting structure of vertical joints of superposed shear walls according to any one of claims 1 to 3, wherein the semi-open annular horizontal reinforcing bars in the vertical joints are not crossed with each other and are not in contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142436.7A CN109868919B (en) | 2019-02-26 | 2019-02-26 | Connection structure of vertical piece of superimposed shear wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910142436.7A CN109868919B (en) | 2019-02-26 | 2019-02-26 | Connection structure of vertical piece of superimposed shear wall |
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| Publication Number | Publication Date |
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| CN109868919A CN109868919A (en) | 2019-06-11 |
| CN109868919B true CN109868919B (en) | 2021-04-16 |
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| CN114541616B (en) * | 2022-03-29 | 2024-04-02 | 郴州远大住宅工业有限公司 | Prefabricated wallboard connecting node and construction method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218514A (en) * | 1995-02-09 | 1996-08-27 | Sekisui Chem Co Ltd | Structure of joint in wall type building |
| CN104328846A (en) * | 2014-10-30 | 2015-02-04 | 刘家文 | Laminated board type shearing wall with exposure of fastened steel bars and connecting method |
| CN104674987A (en) * | 2015-02-13 | 2015-06-03 | 南京工业大学 | Self heat insulation laminated shear wall structure and construction process |
| CN208430661U (en) * | 2018-04-28 | 2019-01-25 | 扬州市职业大学 | A kind of vertical piece construction of line-styled self-heat conserving overlapped shear wall |
-
2019
- 2019-02-26 CN CN201910142436.7A patent/CN109868919B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218514A (en) * | 1995-02-09 | 1996-08-27 | Sekisui Chem Co Ltd | Structure of joint in wall type building |
| CN104328846A (en) * | 2014-10-30 | 2015-02-04 | 刘家文 | Laminated board type shearing wall with exposure of fastened steel bars and connecting method |
| CN104674987A (en) * | 2015-02-13 | 2015-06-03 | 南京工业大学 | Self heat insulation laminated shear wall structure and construction process |
| CN208430661U (en) * | 2018-04-28 | 2019-01-25 | 扬州市职业大学 | A kind of vertical piece construction of line-styled self-heat conserving overlapped shear wall |
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| CN109868919A (en) | 2019-06-11 |
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