CN203640084U - Superimposed slab shear wall with restorable function - Google Patents

Superimposed slab shear wall with restorable function Download PDF

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Publication number
CN203640084U
CN203640084U CN201320637184.3U CN201320637184U CN203640084U CN 203640084 U CN203640084 U CN 203640084U CN 201320637184 U CN201320637184 U CN 201320637184U CN 203640084 U CN203640084 U CN 203640084U
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CN
China
Prior art keywords
shear
superimposed
earthquake
superimposed board
slab
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Expired - Fee Related
Application number
CN201320637184.3U
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Chinese (zh)
Inventor
种迅
叶献国
徐勤
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Hefei University of Technology
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Hefei University of Technology
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Priority to CN201320637184.3U priority Critical patent/CN203640084U/en
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Publication of CN203640084U publication Critical patent/CN203640084U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a superimposed slab shear wall with a restorable function. The superimposed slab shear wall with the restorable function comprises superimposed wall slabs, unbonded prestressed ribs and a semi-assembled superimposed reinforced concrete shear wall formed by external steel plates at horizontal splicing seams. A prefabricated part of the superimposed slab shear wall consists of two layers of prefabricated slabs and lattice reinforcing steel bars for connecting; after a prefabricated component is mounted in space in situ, necessary connecting reinforcing steel bars and load-bearing reinforcing steel bars are arranged; concrete is casted on a core part of the prefabricated wall slab to form a superimposed load-bearing structure. According to the superimposed slab shear wall with the restorable function, post-tensioning unbonded prestressed ribs are arranged on a core cast-in-situ part of the superimposed slab shear wall; the unbonded prestressed ribs can keep elasticity in a rare earthquake, so that the residual deformation after the earthquake of the shear wall is small, that is the shear wall has a self-reset function, and the repair after the earthquake is facilitated; the external steel plates which facilitate the repair after the earthquake are arranged at the horizontal splicing seams of the superimposed slab shear wall, so that the steel plates are yielded in the rare earthquake so as to consume earthquake energy; the external steel plates are convenient to replace after the earthquake; the restore capacity of the superimposed slab shear wall with the restorable function after the earthquake is further improved.

Description

A kind of superimposed board-like shear wall that can restore funcitons
Technical field
The utility model belongs to the technical field of Structural Engineering, relates in particular to a kind of superimposed board-like shear wall that can restore funcitons.
Background technology
The structure that this patent relates to is a kind of take superimposed wallboard and laminated floor slab as the superimposed board-like reinforced concrete shear wall structure of partly assembling of main bearing member.Wherein, precast concrete panel connects two-layer precast plate by lattice reinforcing bar and forms, and is also provided with lattice reinforcing bar in precast floor slab.Lattice reinforcing bar is the upper lower edge reinforcing bar of isosceles triangle by three cross sections and the oblique abdomen muscle of bending forming forms, its effect is mainly to strengthen being connected and globality of pre-erection and cast-in-situ concrete part, and guarantees that prefabricated units have enough strength and stiffness in transporting and hoisting process.After the on-the-spot installation in position of prefabricated units, necessary connecting reinforcement and steel bar stress are set, at position concretings such as core position, the surface layer of precast floor slab and the edge members of shear wall of prefabricated panel, thereby form superposed type force structure.Partly assemble superimposed board-like shear wall structure and absorbed the advantage of cast-in-place concrete structure and precast concrete, compared with traditional full fabricated shear wall structure, overall performance is better, can allow a small amount of alignment error, requirement to on-the-spot installation accuracy is lower, is therefore a kind of architectural structure system that is applicable to the current national conditions of China.
Partly assemble the category that superimposed board-like shear wall structure and prefabricated large panel structure all belong to traditional " imitative cast-in-place " structure, its purpose of design reaches cast-in-place structural as target take stress performance.Identical with monolithic reinforced concrete structure, although this class formation has good ductility and energy dissipation capacity, under macroseism, often produce larger plastic strain and the rear permanent set of shake, structure repair difficulty, brings larger economic loss to owner.Under the guidance based on performance-based seismic design thought, should more pay close attention to recovery capability after the shake of structure, make structure after earthquake, not need to repair or repair a little can recover it and use function, thereby reach the object that reduces economic loss.
Utility model content
The purpose of this utility model is the deficiency in order to make up prior art, and a kind of superimposed board-like shear wall that can restore funcitons is provided, to reduce permanent set after the shake of structure under rarely occurred earthquake effect, and improve the function of structure can recovery capability.
The utility model is achieved through the following technical solutions:
A kind of superimposed board-like shear wall that can restore funcitons, it is characterized in that: include the external steel plate of the superimposed board-like shear wall of half assembling and unbonded prestressing tendon and horizontal edge joint position composition, described partly to assemble superimposed board-like shear wall be the superposed type primary structure member being formed by both sides prefabricated panel and core cast-in-situ concrete; The cast-in-place position of described core of partly assembling superimposed board-like reinforced concrete shear wall arranges the unbonded prestressing tendon through horizontal piece between wallboard and basis and between levels wallboard, and unbonded prestressing tendon is positioned near the position natural axis of cross section; Described two ends place of partly assembling horizontal piece in superimposed board-like reinforced concrete shear wall is fixed with external junction steel plate by high-strength bolt, and external junction steel plate carries out weld all around with the pre-embedded steel slab partly assembling in superimposed board-like reinforced concrete shear wall.
Described unbonded prestressing tendon is arranged on the core position of superimposed board-like shear wall, can first fix presstressed reinforcing steel position, build again core space concrete, after concrete reaches some strength, carry out the stretch-draw of presstressed reinforcing steel, without indwelling presstressed reinforcing steel bellows in advance.
Within the scope of near the described certain altitude partly assembling the horizontal piece that may occur plastic strain in superimposed board-like reinforced concrete shear wall under rarely occurred earthquake, the lattice reinforcing bar of encryption is set in the constrained edge member of shear wall, forms confined concrete.
The construction method of described superimposed board-like shear wall that can restore funcitons, is characterized in that: specifically include following steps:
First cast in situ concrete foundation and cast-in-place concrete wall section are together built, pre-embedded steel slab in cast-in-place wall section, default high-strength bolt hole, and the anchored end of unbonded prestressing tendon is imbedded to cast-in-place wall end;
By being embedded with the prefabricated position of the superimposed board-like shear wall hoisted in position of pre-embedded steel slab, be placed on spacer pad, adjust verticality and the position of wallboard;
Unbonded prestressing tendon is passed to wallboard core space, and fix its position, build core space concrete; External junction steel plate is installed, with three weld all arounds of steel embedded board, fastening by high-strength bolt;
Adopting uses the same method carries out the construction of upper floor, and unbonded prestressing tendon, through core space, is strengthened to district's floor levels edge joint position in structural base and all adopted external junction steel plate to be connected with high-strength bolt;
Continue the wallboard that a floor above district is strengthened in construction bottom, unbonded prestressing tendon, through core space, is built to core space concrete; After concrete reaches some strength, tensioned prestressing bar;
After this construction of each floor is identical with common superimposed sheet shear wall, does not need to arrange unbonded prestressing tendon, and horizontal edge joint position, also without external steel plate is set, adopts vertical plain bars to connect.
This shear wall arranges posttension unbonded prestressing tendon at the cast-in-place position of core, and part anti-bending bearing capacity both can be provided, and is conducive to again the Self-resetting after shear wall rarely occurred earthquake, is convenient to shake rear reparation; The horizontal piece of superimposed board-like shear wall position is adopted to the external steel plate replacement plain bars that is easy to shake rear replacing, further improve the rear recovery capability of its shake.Posttension unbonded prestressing tendon should be arranged near the natural axis of cross section, makes structure presstressed reinforcing steel in the time occurring compared with large plastometric set still can keep elasticity, thereby the self-resetting capability of shear wall is provided.Core position at superimposed board-like shear wall arranges posttension unbonded prestressing tendon, can first fix presstressed reinforcing steel position, then build core space concrete, after concrete reaches some strength, carry out the stretch-draw of presstressed reinforcing steel, without indwelling presstressed reinforcing steel bellows in advance, construct more convenient.
May there is the horizontal edge joint position of plastic strain at shear wall, adopt external steel plate to replace the vertical vertical muscle through piece.There is plastic strain in this steel plate, dissipation seismic energy is convenient to after shake remove and is changed under rarely occurred earthquake effect.Steel plate is connected by high-strength bolt with superimposed wallboard, and with prefabricated panel in pre-embedded steel slab carry out weld all around.For ease of burying underground of pre-embedded steel slab, need to arrange certain altitude cast-in-place wall section in bottom, build with basis simultaneously.
Due to posttension unbonded prestressing tendon in superimposed board-like shear wall structure not as assembled means, therefore can be only within the bottom floor (be generally shear wall bottom and strengthen district) of plastic strain may appear in structure, presstressed reinforcing steel be set.Under the rarely occurred earthquake of top, can there is not the horizontal edge joint position of plastic strain without adopting external steel plate to connect yet, still adopt common splicing structure mode.
The plastic strain under rarely occurred earthquake effect of this structure mainly occurs near horizontal piece, and plastic range is more concentrated, and shear wall end capacity compression district concrete bears compared with huge pressing stress.Therefore, within the scope of near certain altitude horizontal piece, the lattice reinforcing bar of encryption is set in the constrained edge member of shear wall, forms confined concrete, to improve its intensity and deformability, prevent too early crushing.
The utility model has the advantages that:
The utility model reasonable in design, arranges posttension unbonded prestressing tendon at the cast-in-place position of core, makes structure have the rear Self-resetting function of shake, is convenient to shake rear reparation.The horizontal piece of superimposed board-like shear wall position is adopted to the external steel plate replacement plain bars that is easy to shake rear replacing, further improve the rear recovery capability of its shake.This method greatly improves superimposed board-like shear wall structure distortion recovery capability, under the prerequisite that suitably increases construction costs, integrality performance of the structure is effectively promoted.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and specific implementation process, the utility model is described in further detail:
Superimposed board-like shear wall that can restore funcitons, this shear wall will partly assemble composite technology and post-tensioned prestressing prefabricating technique combines, form have can restore funcitons superimposed board-like shear wall.The cast-in-place part 12 of core at superimposed sheet shear wall arranges posttension unbonded prestressing tendon 4, without reserving hole channel in prefabricated panel, there is the advantage of easy construction, because presstressed reinforcing steel is without bonding, while producing moderate finite deformation, still can keep elasticity, therefore structure recovery ability is good, and after shake, permanent set is little.Described two ends place of partly assembling the horizontal piece 9 that may occur plastic strain in superimposed board-like reinforced concrete shear wall under rarely occurred earthquake is fixed with external junction steel plate 5 by high-strength bolt, and external junction steel plate carries out weld all around with the pre-embedded steel slab 6 partly assembling in superimposed board-like reinforced concrete shear wall, described each more than 10 floor of the horizontal piece that does not occur plastic strain in superimposed board-like reinforced concrete shear wall under rarely occurred earthquake that partly assembles is without unbonded prestressing tendon is set, horizontal edge joint position, also without external steel plate is set, adopts vertical plain bars to connect.
Within the scope of near the described certain altitude partly assembling the horizontal piece 9 that may occur plastic strain in superimposed board-like reinforced concrete shear wall under rarely occurred earthquake, at the interior lattice reinforcing bar 13 that encryption is set of constrained edge member 14 of shear wall, form confined concrete.
In the utility model, post-tensioned prestressing muscle, not as assembled means in superimposed sheet shear wall structure, therefore can be only arranges presstressed reinforcing steel within the bottom floor of plastic strain may appear in structure, and upper floor still adopts common splicing structure mode.This method greatly improves superimposed board-like shear wall structure distortion recovery capability, and under the prerequisite that suitably increases construction costs, integrality performance of the structure is effectively promoted.
For further strengthening recovery capability after the shake of structure, the utility model adopts the external steel plate 13 of changing after being easy to shake to replace the common longitudinal reinforcement 3 through horizontal piece at the horizontal piece of superimposed board-like shear wall position.External steel plate is surrendered power consumption under rarely occurred earthquake, and damage concentration, on steel plate, makes the basic recovery of structure level distortion by the self-resetting capability of presstressed reinforcing steel after shake, then, by changing impaired Wasted-energy steel plate, recovers rapidly the function of structure.
Specific implementation process is described below:
First cast in situ concrete foundation 1 and cast-in-place concrete wall section 2 are together built, pre-embedded steel slab 6 in cast-in-place wall section, default high-strength bolt hole 8, and the anchored end of unbonded prestressing tendon 4 is imbedded to cast-in-place wall section;
By superimposed board-like shear wall pre-erection 11 hoisted in position of pre-embedded steel slab 6, be placed on spacer pad, adjust verticality and the position of wallboard;
Unbonded prestressing tendon is passed to wallboard core space, and fix its position, build core space concrete; Steel plate 5 is installed, with 6 three weld all arounds of pre-embedded steel slab, by fastening high-strength bolt 7;
Adopting uses the same method carries out the construction of upper floor, and unbonded prestressing tendon, through core space, is strengthened to district's floor levels edge joint position in structural base and all adopted external steel plate to be connected with high-strength bolt;
Continue the wallboard that a floor above district is strengthened in construction bottom, unbonded prestressing tendon, through core space, is built to core space concrete; After concrete reaches some strength, tensioned prestressing bar;
After this construction of each floor is identical with common superimposed sheet shear wall, does not need to arrange unbonded prestressing tendon, and horizontal edge joint position, also without external steel plate is set, adopts vertical plain bars to connect.

Claims (1)

  1. One kind can restore funcitons superimposed board-like shear wall, it is characterized in that: include the external steel plate of the superimposed board-like shear wall of half assembling and unbonded prestressing tendon and horizontal edge joint position composition, described partly to assemble superimposed board-like shear wall be the superposed type primary structure member being formed by both sides prefabricated panel and core cast-in-situ concrete; The cast-in-place position of described core of partly assembling superimposed board-like reinforced concrete shear wall arranges the unbonded prestressing tendon through horizontal piece between wallboard and basis and between levels wallboard, and unbonded prestressing tendon is positioned near the position natural axis of cross section; Described two ends place of partly assembling horizontal piece in superimposed board-like reinforced concrete shear wall is fixed with external junction steel plate by high-strength bolt, and external junction steel plate carries out weld all around with the pre-embedded steel slab partly assembling in superimposed board-like reinforced concrete shear wall.
CN201320637184.3U 2013-10-15 2013-10-15 Superimposed slab shear wall with restorable function Expired - Fee Related CN203640084U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320637184.3U CN203640084U (en) 2013-10-15 2013-10-15 Superimposed slab shear wall with restorable function

Publications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106013499A (en) * 2016-06-08 2016-10-12 浙江新华建设有限公司 High-strength building wall body structure
CN110080418A (en) * 2019-05-09 2019-08-02 四川大学 A kind of detachable assembling type shear wall structure of bolt splicing
CN110820983A (en) * 2019-10-25 2020-02-21 绍兴文理学院 Longitudinal connection method for assembled prefabricated superposed wall boards
CN110820984A (en) * 2019-10-25 2020-02-21 绍兴文理学院 Transverse connection method for assembled prefabricated superposed wall boards

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106013499A (en) * 2016-06-08 2016-10-12 浙江新华建设有限公司 High-strength building wall body structure
CN110080418A (en) * 2019-05-09 2019-08-02 四川大学 A kind of detachable assembling type shear wall structure of bolt splicing
CN110080418B (en) * 2019-05-09 2020-12-25 四川大学 Bolt-spliced detachable assembly type shear wall structure
CN110820983A (en) * 2019-10-25 2020-02-21 绍兴文理学院 Longitudinal connection method for assembled prefabricated superposed wall boards
CN110820984A (en) * 2019-10-25 2020-02-21 绍兴文理学院 Transverse connection method for assembled prefabricated superposed wall boards
CN110820983B (en) * 2019-10-25 2022-04-15 绍兴文理学院 Longitudinal connection method for assembled prefabricated superposed wall boards

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140611

Termination date: 20151015

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