CN114086692B - Assembly type shear wall splicing joint connecting structure capable of cooperatively shearing in floor slab plane and construction method thereof - Google Patents
Assembly type shear wall splicing joint connecting structure capable of cooperatively shearing in floor slab plane and construction method thereof Download PDFInfo
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- CN114086692B CN114086692B CN202111430882.1A CN202111430882A CN114086692B CN 114086692 B CN114086692 B CN 114086692B CN 202111430882 A CN202111430882 A CN 202111430882A CN 114086692 B CN114086692 B CN 114086692B
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- 238000010008 shearing Methods 0.000 title claims abstract description 23
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 53
- 239000010959 steel Substances 0.000 claims abstract description 53
- 239000002131 composite material Substances 0.000 claims abstract description 24
- 239000011440 grout Substances 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 230000000452 restraining effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
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Classifications
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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
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
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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
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a fabricated shear wall splicing joint connecting structure with cooperative shearing resistance in a floor plane, which comprises an upper fabricated shear wall with a reserved groove, a fabricated composite floor with reserved shearing-resistant connecting steel bars, a lower fabricated shear wall and an upper fabricated shear wall plate-floor shearing connecting piece, wherein the upper fabricated shear wall is provided with a groove; the construction method of the assembling type shear wall splicing joint connecting structure with cooperative shearing resistance in the floor slab plane is further disclosed. According to the invention, the connection rigidity between the upper-layer assembled shear wall and the lower-layer floor slab can be enhanced through the connection, so that the shear force transmission from the upper-layer assembled shear wall to the lower-layer floor slab is increased, the shear force influence between the upper-layer assembled shear wall and the lower-layer assembled shear wall is reduced, and the anti-seismic performance of the shear wall is improved.
Description
Technical Field
The invention relates to the technical field of building structures, in particular to a floor slab plane cooperative shearing resistance assembly type shear wall splicing joint connecting structure and a construction method thereof.
Background
The assembled shear wall structure is widely applied to high-rise buildings in China, and due to the fact that the requirement for earthquake resistance in most regions of China is high, the assembled shear wall structure needs to have good earthquake resistance. The horizontal earthquake force of the building structure is mainly generated by the floor slab and the mass of various functional loads borne by the floor slab, and is transmitted to the shear wall by the floor slab, the shear wall collects the horizontal earthquake shearing force transmitted by the floor slab and transmits the horizontal earthquake shearing force to the lower layer, the horizontal earthquake shearing force needs to be transmitted between the upper assembled shear wall and the lower assembled shear wall through the abutted seams, and when the abutted seams bear larger horizontal earthquake shearing force, the horizontal earthquake force is not beneficial to the exertion of the earthquake resistance.
In the existing assembly type shear wall technology, the splicing seams of the shear wall can be divided into three parts: when the assembly type shear wall joints are arranged at the elevation of the floor, the horizontal shear force born by the upper assembly type shear wall is respectively transmitted to the floor and the lower assembly type shear wall through the upper assembly type shear wall joint, the floor top surface joint and the upper assembly type shear wall joint, the shear force born by the floor is redistributed through the internal force in the plane, and then the horizontal shear force born by the floor is transmitted to the lower assembly type shear wall through the lower assembly type shear wall joint and the floor bottom surface joint after being superposed, so that the shear force born by the floor is transmitted to the lower assembly type shear wall through the lower assembly type shear wall joint, and therefore the structure can be known: in the fabricated shear wall, the floor slab can relieve the shear concentration of the splicing seams of the upper-lower fabricated shear wall. However, in the existing assembly type shear wall technology, the splicing seams of the upper-lower assembly type shear wall are improved and strengthened as the key splicing seams for shearing resistance, and the connection strengthening technology for the splicing seams of the floor slab and the upper-lower assembly type shear wall does not exist.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention discloses a floor slab plane cooperative shearing resistance assembly type shear wall splicing joint connecting structure; the second purpose is to disclose the construction method of the fabricated shear wall splicing joint connecting structure capable of cooperatively shearing in the floor slab plane. The connection rigidity between the upper-layer assembled shear wall and the lower-layer floor slab can be enhanced through the connection, so that the shear force transmission from the upper-layer assembled shear wall to the lower-layer floor slab is increased, the shear force influence between the upper-layer assembled shear wall and the lower-layer assembled shear wall is reduced, and the anti-seismic performance of the upper-layer assembled shear wall and the lower-layer assembled shear wall is improved.
The technical scheme is as follows: the invention discloses an assembled shear wall splicing joint connecting structure with cooperative shearing resistance in a floor plane, which comprises an upper assembled shear wall with a reserved groove, an assembled composite floor with reserved shearing-resistant connecting steel bars, a lower assembled shear wall and an upper assembled shear wall plate-floor shearing connecting piece, wherein the upper assembled shear wall is provided with a groove;
the groove is formed in the position of a non-edge constraint component at the bottom of the upper-layer assembly type shear wall, corresponding reinforcing steel bars are reserved in the groove, the bottom stress steel bars, corresponding to the groove area of the upper-layer assembly type shear wall, of the assembly type composite floor slab with the reserved shear connection steel bars are bent and extend into the groove, the reserved steel bars are not arranged in the area, corresponding to the groove, of the lower-layer assembly type shear wall slab, and the upper-layer assembly type shear wall slab-floor slab shear connection piece comprises longitudinal closed steel bars formed by the reserved connection steel bars of the floor slab, I-shaped steel arranged in the longitudinal closed steel bars, horizontal constraint stirrups and high-strength mortar anchor grouting materials.
Furthermore, the groove is formed in the position of a non-edge restraining component in the middle of the upper-layer fabricated shear wall, and the cross section of the groove is rectangular.
Further, the middle point of the upper edge of the groove is provided with a 2% slope.
Furthermore, the prefabricated part of the fabricated composite floor slab reserved with the shear-resistant connecting steel bars is continuously extended and bent to form the floor slab reserved connecting steel bars in the upper fabricated shear wall slab-floor slab shear connector at the position of the groove of the upper fabricated shear wall, and the floor slab reserved connecting steel bars extend into the groove.
Furthermore, longitudinal grout anchor connecting steel bars are reserved only at the positions of the edge restraining members at the top of the lower assembled shear wall.
The construction method of the assembling type shear wall splicing joint connecting structure with cooperative shearing in the floor slab plane comprises the following steps:
s1, prefabricating the upper-layer assembled shear wall, reserving a groove, prefabricating assembled composite floor slabs reserved with shear-resistant connecting steel bars on the inner side and the outer side, and prefabricating the lower-layer assembled shear wall;
s2, completing the hoisting construction of the lower-layer assembled shear wall and the assembled composite floor slab with reserved shear-resistant connecting steel bars, placing I-shaped steel in the middle of longitudinal closed steel bars before a post-pouring layer of the post-pouring composite floor slab, and binding horizontal constraint stirrups on the reserved steel bars;
s3, finishing post-pouring construction of the assembled composite floor slab, hoisting and assembling an upper-layer assembled shear wall, and reserving a seam grouting circulation gap with the thickness of 20mm between the upper-layer assembled shear wall and the top surface of the floor slab to form a slurry anchor grouting layer;
s4, arranging side blocking templates around the groove and the grout anchor grouting layer, and keeping the tooth space, the grout anchor grouting hole space and the abutted seam grouting circulation gap communicated with each other;
and S5, performing slurry anchor grouting construction, finishing grouting after all slurry anchor connecting pieces and reinforcing tooth grooves are fully grouted, and removing the formwork after maintenance to finish synchronous grouting construction of the upper-layer assembled shear wallboard-floor slab shear connecting pieces.
Has the advantages that: compared with the prior art, the invention has the advantages that:
1. the upper-layer assembled shear wall-floor shear connecting piece for transferring shear force to the assembled floor is arranged in the middle of the abutted seam of the assembled shear wall, so that the horizontal shear force borne by the upper-layer assembled shear wall can be transferred into the plane of the assembled floor greatly, and after the horizontal shear force generated by the mass borne by the floor is redistributed and superposed through the internal force of the floor, the horizontal shear force is transferred to the lower-layer assembled shear wall through the abutted seam of the lower-layer assembled shear wall and the bottom surface of the floor, the larger horizontal shear force distribution between the abutted seams of the upper-layer assembled shear wall and the lower-layer assembled shear wall can be effectively reduced, and the mechanical property of the abutted seam of the assembled shear wall is optimized, so that the anti-seismic property of the assembled shear wall is improved;
2. according to the invention, through the upper-layer assembled shear wall-floor shear connecting piece, after the horizontal shear force borne by the upper-layer assembled shear wall is greatly transmitted into the plane of the assembled floor, because the in-plane rigidity of the assembled floor is high, the internal force redistribution can be generated through other assembled shear walls connected with the floor through the in-plane rigidity, so that the horizontal shear force distribution of the assembled shear wall is optimized, and the cooperative stress of a plurality of assembled shear walls in the same floor is realized;
3. according to the upper-layer assembly type shear wall board with the reserved groove, the reserved groove extends into the assembly type shear wall body, so that the acting surface of the shear wall for transferring shear force to the floor slab is higher than the abutted seam of the assembly type shear wall, and the abutted seam shear force of the assembly type shear wall can be reduced in advance, so that the overlarge shear force at the abutted seam part of the assembly type shear wall is avoided, and the mechanical property of the assembly type abutted seam is further improved;
4. the upper-layer assembled shear wallboard-floor shear connector provided by the invention consists of high-strength grouting material, prefabricated floor reserved reinforcing steel bars and embedded I-shaped steel, has high shear rigidity, and can effectively improve the transmission of horizontal shear force borne by an upper-layer assembled shear wall to the plane of the assembled floor.
Drawings
FIG. 1 is an overall split three-dimensional schematic view of the present invention;
FIG. 2 is a three-dimensional schematic view of the invention after being integrally assembled;
FIG. 3 is a schematic view of the bottom of the upper fabricated shear wall with grooves according to the present invention;
FIG. 4 is a schematic view of an assembled composite floor slab with shear-resistant connecting steel bars reserved according to the present invention;
FIG. 5 is a cross-sectional view taken along line 1-1 of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic top view of a lower fabricated shear wall of the present invention;
FIG. 7 is a three-dimensional schematic view of the reinforcing steel bars and the structural steel in the shear wallboard-floor shear connector of the upper assembly type of the present invention;
FIG. 8 is a schematic view of the construction of an upper fabricated shear wallboard-floor shear connection of the present invention;
fig. 9 is a cross-sectional view taken along line 2-2 of fig. 8 in accordance with the present invention.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
The splicing connection structure of the assembled shear wall with cooperative shearing resistance in the floor plane as shown in fig. 1-9 comprises an upper assembled shear wall 1 with a reserved groove 2, an assembled composite floor 6/7 with reserved shearing resistance connecting steel bars, a lower assembled shear wall 8 and an upper assembled shear wall plate-floor shearing connecting piece 17.
The groove 2 is arranged at the position of a non-edge restraining component in the middle of the upper-layer fabricated shear wall 1, and the cross section of the groove is rectangular.
The middle point of the upper edge of the groove 2 is provided with a 2% gradient.
The groove 2 is arranged at the bottom non-edge constraint component part of the upper-layer assembly type shear wall 1, corresponding reinforcing steel bars are reserved, the bottom stress steel bars corresponding to the groove area of the upper-layer assembly type shear wall 1 are bent and extend into the groove 2 by the assembly type composite floor slab 6/7 reserved with the shear connection steel bars, the reserved steel bars are not arranged in the area corresponding to the groove 2 by the lower-layer assembly type shear wall 8, and the upper-layer assembly type shear wall slab-floor shear connection part 17 comprises longitudinal closed steel bars 9 formed by floor slab reserved connection steel bars 13/14, I-shaped steel 4 arranged in the longitudinal closed steel bars 9, horizontal constraint stirrups 16 and high-strength grout anchor grouting materials 3.
The prefabricated part of the fabricated composite floor slab 6/7 of the reserved shear connection steel bars is continuously extended and bent to form floor slab reserved connection steel bars 13/14 in the upper fabricated shear wall slab-floor slab shear connector 17 at the position of the groove 2 of the upper fabricated shear wall 1 and extends into the groove 2.
And longitudinal grout anchor connecting steel bars 15 are reserved only at the edge constraint component positions at the top of the lower assembled shear wall 8, and no steel bars are reserved at other positions.
For assisting understanding, reference numeral 10 is a seam between a post-cast concrete part of the fabricated composite floor slab and the top surface of the lower fabricated shear wall; reference numeral 11 is an upper-layer fabricated shear wallboard-floor shear connector region; reference numeral 12 is a non-superstructure fitted shear wall panel-floor shear connector area.
The construction method of the assembling type shear wall splicing joint connecting structure with cooperative shearing in the floor slab plane comprises the following steps:
s1, prefabricating the upper-layer assembled shear wall 1, reserving a groove 2, prefabricating assembled composite floor slabs 6/7 with reserved shear-resistant connecting steel bars on the inner side and the outer side, and prefabricating the lower-layer assembled shear wall 8;
s2, completing the hoisting construction of a lower-layer assembled shear wall 8 and an assembled composite floor slab 6/7 with reserved shear-resistant connecting steel bars, placing I-shaped steel sections 4 in the middle of longitudinal closed steel bars 9 before a post-pouring layer 5 of the post-pouring composite floor slab, and binding horizontal restraint stirrups 16 on the reserved steel bars;
s3, finishing post-pouring construction of the assembled composite floor slab, hoisting and assembling the upper assembled shear wall 1, and reserving a seam grouting circulation gap with the thickness of 20mm between the upper assembled shear wall 1 and the top surface of the floor slab to form a slurry anchor grouting layer;
s4, arranging side blocking templates around the groove 2 and the grout anchor grouting layer, and keeping the tooth space, the grout anchor grouting hole space and the abutted seam grouting circulation gap communicated with each other;
and S5, performing slurry anchor grouting construction, finishing grouting after all slurry anchor connecting pieces and reinforcing steel bar tooth sockets are fully grouted, and removing a formwork after maintenance to finish synchronous grouting construction of the upper-layer assembly type shear wallboard-floor slab shear connecting piece 17.
Claims (6)
1. The utility model provides an assembly type shear force wall piece connection structure that shears in coordination in floor plane which characterized in that: the shear wall comprises an upper-layer assembly type shear wall (1) with a reserved groove (2), an assembly type composite floor slab (6/7) with reserved shear connection steel bars, a lower-layer assembly type shear wall (8) and an upper-layer assembly type shear wall slab-floor slab shear connecting piece (17);
the groove (2) is arranged at the bottom non-edge constraint component part of the upper-layer assembly type shear wall (1) and is reserved with corresponding reinforcing steel bars, the assembly type composite floor slab (6/7) reserved with the shear-resistant connecting steel bars bends at the bottom stress steel bars corresponding to the groove area of the upper-layer assembly type shear wall (1) and extends into the groove (2), the lower-layer assembly type shear wall (8) is not provided with the reserved steel bars in the area corresponding to the groove (2), and the upper-layer assembly type shear wall slab-floor slab shear connecting piece (17) comprises longitudinal closed steel bars (9) formed by the floor slab reserved connecting steel bars (13/14), I-shaped steel (4) arranged in the longitudinal closed steel bars (9), horizontal constraint hoop bars (16) and high-strength grout grouting material (3).
2. The fabricated shear wall splicing joint connection structure resisting shear in cooperation in the floor plane as recited in claim 1, wherein: the groove (2) is formed in the position of a non-edge restraining component in the middle of the upper-layer assembled shear wall (1), and the cross section of the groove is rectangular.
3. The fabricated shear wall splicing joint connection structure resisting shear in cooperation in the floor plane as recited in claim 2, wherein: the middle point of the upper edge of the groove (2) is provided with a 2% slope.
4. The fabricated shear wall splicing joint connection structure resisting shear in cooperation in the floor plane as recited in claim 1, wherein: and the prefabricated part of the assembly type composite floor slab (6/7) with the reserved shear-resistant connecting steel bars is continuously extended and bent at the position of the groove (2) of the upper assembly type shear wall (1) to form floor slab reserved connecting steel bars (13/14) in the upper assembly type shear wall slab-floor slab shear connector (17) and extend into the groove (2).
5. The fabricated shear wall splicing joint connection structure resisting shear in cooperation in the floor plane as recited in claim 1, wherein: and longitudinal grout anchor connecting steel bars (15) are reserved only at the positions of the edge restraining members at the top of the lower assembled shear wall (8).
6. The construction method of the assembly type shear wall splicing joint connection structure with cooperative shearing in the floor slab plane as recited in claim 1, wherein: the method comprises the following steps:
s1, prefabricating the upper-layer assembled shear wall (1), reserving a groove (2), prefabricating assembled composite floor slabs (6/7) with reserved shear-resistant connecting steel bars on the inner side and the outer side, and prefabricating the lower-layer assembled shear wall (8);
s2, completing the hoisting construction of a lower-layer assembled shear wall (8) and an assembled composite floor slab (6/7) with reserved shear-resistant connecting steel bars, placing I-shaped steel (4) in the middle of longitudinal closed steel bars (9) before a post-cast layer (5) of the post-cast composite floor slab, and binding horizontal restraining stirrups (16) on the reserved steel bars;
s3, finishing post-pouring construction of the assembled composite floor slab, hoisting and assembling the upper assembled shear wall (1), and reserving a seam grouting circulation gap with the thickness of 20mm between the upper assembled shear wall (1) and the top surface of the floor slab to form a grouting anchor grouting layer;
s4, arranging side blocking templates around the groove (2) and the grout anchor grouting layer, and keeping the tooth space, the grout anchor grouting hole space and the abutted seam grouting circulation gap communicated with each other;
and S5, performing slurry anchor grouting construction, finishing grouting after all slurry anchor connecting pieces and reinforcing tooth grooves are fully grouted, and removing the formwork after maintenance to finish synchronous grouting construction of the upper-layer assembled shear wallboard-floor slab shear connecting piece (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430882.1A CN114086692B (en) | 2021-11-29 | 2021-11-29 | Assembly type shear wall splicing joint connecting structure capable of cooperatively shearing in floor slab plane and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430882.1A CN114086692B (en) | 2021-11-29 | 2021-11-29 | Assembly type shear wall splicing joint connecting structure capable of cooperatively shearing in floor slab plane and construction method thereof |
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| Publication Number | Publication Date |
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| CN114086692A CN114086692A (en) | 2022-02-25 |
| CN114086692B true CN114086692B (en) | 2022-12-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102168455B (en) * | 2011-03-15 | 2012-09-19 | 东南大学 | Horizontal seam U-shaped closed rib junction structure of assembled shear wall structure |
| CN103924711B (en) * | 2014-05-01 | 2015-12-09 | 西安科技大学 | The construction technology of assembling grillage shear wall structural system |
| CN106088354A (en) * | 2016-08-25 | 2016-11-09 | 初明进 | A kind of interlayer connection node |
| CN207538201U (en) * | 2017-09-21 | 2018-06-26 | 中国建筑股份有限公司 | A kind of post-tensioned prestressing assembles concrete frame energy dissipation component system |
| CN110700420A (en) * | 2018-07-10 | 2020-01-17 | 周兆弟 | Prefabricated wall body and assembly structure of assembly type building and construction method of prefabricated wall body and assembly structure |
| CN109914587B (en) * | 2019-03-25 | 2020-08-18 | 中厦建设有限公司 | Cross connection structure of assembled prefabricated floor and wallboard |
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