CN103046669B - Prefabricated high strength reinforced concrete shear wall with low strength energy dissipation strip and fabrication method - Google Patents

Prefabricated high strength reinforced concrete shear wall with low strength energy dissipation strip and fabrication method Download PDF

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CN103046669B
CN103046669B CN201210529829.1A CN201210529829A CN103046669B CN 103046669 B CN103046669 B CN 103046669B CN 201210529829 A CN201210529829 A CN 201210529829A CN 103046669 B CN103046669 B CN 103046669B
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shear
strength
reinforcement
concrete
prefabricated
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CN103046669A (en
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张建伟
申宏权
曹万林
李东华
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Beijing University of Technology
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Beijing University of Technology
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Abstract

The invention discloses a prefabricated high strength reinforced concrete shear wall with a low strength energy dissipation strip and a fabrication method and belongs to the field of construction. The shear wall is characterized in that high-strength concrete is utilized in the shear wall, a horizontal reinforcing steel bar (2) and a vertical reinforcing steel bar (3) in the shear wall are high strength steel bars, a portion of the horizontal reinforcing steel bar (2), which extends out of the shear wall, is hooked, steel bar connecting holes (4) are arranged on the side surface of the shear wall from top to bottom at equal intervals, two pieces of shear walls are located at the same horizontal height by corresponding to the connecting holes, when the two pieces of shear walls are connected, connecting reinforcing steel bars (5) are inserted, longitudinal long through reinforcing steel bars (6) are inserted into a hook, and low strength concrete (8) is poured between the two pieces of shear walls. The novel prefabricated shear wall has the advantages that the structure is simple, the construction costs are low, the construction is convenient, the anti-seismic performance is good, and social development problems that utilization quantities of concrete and reinforcing steel bars are large, and natural resources and environment are overwhelmed are expected to be solved.

Description

Prefabricated high strength RC establishes low strong energy dissipation strip shear wall and the practice
Technical field
The invention belongs to a kind of shear wall, particularly the prefabricated high strength RC of one establishes low strong energy dissipation strip shear wall and the practice.
Background technology
Be completed the every year overall floorage in all kinds of house of current Building Trade in China is at the forefront in the world, especially highrise building and super highrise building appearing in metropolis like the mushrooms after rain.Steel concrete will be a kind of important structural timber in China quite long from now on period, and wherein the concrete application of high performance steel is very important by playing a part.
Shear wall, as lateral resistant member, has critical role in high building structure, and the quality of its deformability directly affects the anti-seismic performance of whole building.High-strength concrete has high-strength, the early feature such as strong, high modulus of deformation, high-durability, high fluidity and good impervious leak resistance energy, becomes the ideal material of making shear wall.But the deformability of high strength concrete shear wall is relatively poor, this greatly limits its application in antidetonation area.Verified, utilize high tensile reinforcement to make horizontal bar, it is practicable for improving High Strength Concrete Structures ductility.Literature research shows, high tensile reinforcement and high-strength concrete with the use of, the bearing capacity of structure can be significantly improved, and and original structure have close deformability.The safety stock of high-strength reinforcement shear wall structure apparently higher than common reinforcement structure, and effectively can improve the security performance of structure under large shake.Prefabricated high strength RC establishes low strong energy dissipation strip shear wall to give full play to the advantage of its material property and form of structure, strengthens the energy dissipation capacity of shear wall, can meet current specifications, again save natural resource.
Summary of the invention
The object of the present invention is to provide a kind of novel precast shear wall with advantages such as simple structure, cheap, easy construction, anti-seismic performance are good, to solve concrete and amount of reinforcement large, the social development problem that natural resources and enviroment can't bear the heavy load.
The technical solution used in the present invention is as follows: shear wall concrete used is high-strength concrete, in shear wall, horizontal reinforcement 2 and vertical reinforcement 3 are high tensile reinforcement, wherein horizontal reinforcement 2 stretches out shear wall place and does crotch process, the spaced set bar connecting hole 4 from top to bottom, side of shear wall, two pieces of corresponding connecting holes of shear wall are at same level height, two pieces of shear walls insert connecting reinforcement 5 when connecting, and longitudinally elongated reinforcing bar 6 inserts in crotch, builds low strength concrete 8 between two pieces of shear walls.
Described high tensile reinforcement is III grade of reinforcing bar (370/570) and Ⅳ-grade steel muscle (540/835) by mechanical property.
The concrete of described high-strength concrete to be label be more than C60.
In described mechanical of high strength reinforced concrete RC shear wall, concrete is high-strength concrete, and horizontal reinforcement 2 and vertical reinforcement 3 are high tensile reinforcement.
Described horizontal reinforcement stretches out wallboard place and does 135 ocrotch.
Described connecting reinforcement and elongated vertical muscle are HPB300 or HPB300 or HRB335, and wherein connecting reinforcement length is 300 ~ 500mm, and diameter is not less than horizontal reinforcement diameter in wallboard.
The corresponding connecting hole of described two pieces of shear walls is at same level height, and sustained height two connecting hole is evenly arranged along wall thickness direction, and connecting hole spacing and connecting hole nearest reinforcing bar distance in shear wall is not less than a connecting hole diameter d o, unaffected to ensure connecting hole surrounding concrete.
Between described two shear walls, connecting hole can only arrange one in same level direction, and when arranging one, connecting hole is located in the middle of shear wall.
Described two shear wall spacing are 100 ~ 150mm.
Arrange dense mesh before building low-strength concrete, two pieces of shear wall seam both sides arrange two pieces of dense meshes and dense mesh is parallel with shear wall, and outside dense mesh, thickness of concrete cover is 10-15mm.
Described concrete eight is low strength concrete is the concrete that label is less than C25.
According to technical scheme of the present invention, adopt prefabricated high strength RC to establish the preparation method of low strong energy dissipation strip shear wall, its order is as follows:
1) make shear wall 1, with high tensile reinforcement colligation shear wall horizontal reinforcement 2 and vertical reinforcement 3, reserve connecting hole 4 during formwork, build high-strength concrete;
2) first fix the position of first piece of shear wall 1 during site operation, in connecting hole 4, insert connecting reinforcement 5, fix another block shear wall, connecting reinforcement is inserted in second piece of shear wall connecting hole;
3) longitudinally elongated reinforcing bars 6 good with steel wire lashing are inserted at two shear wall horizontal reinforcement 2 crotch places;
4) dense mesh 7 is arranged two pieces of shear wall seam both sides;
5) formwork supporting plate builds low strength concrete 8.
1) with high tensile reinforcement colligation shear wall both sides steel mesh reinforcement, reserved connecting hole position, builds high-strength concrete.
2) form removal after maintenance.
3) first fix the position of first piece of shear wall during site operation, in connecting hole, insert connecting reinforcement, fix another block shear wall, connecting reinforcement is inserted into second piece of shear wall connecting hole, make connecting reinforcement length in two connecting holes equal.
4) longitudinally elongated reinforcing bar good with steel wire lashing is inserted at shear wall horizontal reinforcement crotch place, both sides.
5) dense mesh is arranged two pieces of shear wall seam both sides.
6) formwork supporting plate builds low strength concrete.
Or its order is as follows:
1) make shear wall 1, with high tensile reinforcement colligation shear wall horizontal reinforcement 2 and vertical reinforcement 3, reserve connecting hole 4 during formwork, build high-strength concrete;
First fix the position of first piece of shear wall 1 during 2 site operation, in connecting hole 4, insert connecting reinforcement 5, fix another block shear wall, connecting reinforcement is inserted in second piece of shear wall connecting hole;
3 to insert longitudinally elongated reinforcing bars 6 good with steel wire lashing at two shear wall horizontal reinforcement 2 crotch places;
4 formwork supporting plates build low strength concrete 8.
The present invention compared with prior art, has following clear superiority and beneficial effect:
Prefabricated high strength RC establishes low strong energy dissipation strip shear wall to give full play to the feature of Materials with High Strength performance and structural advantage.In outward appearance, the use due to Materials with High Strength decreases concrete structure size, alleviates dead load and foundation load, saves resource simultaneously; In durability, the endurance quality of High Strength Concrete Structures is better, extends the application life of building, reduces structural maintenance and renewal expense.Owing to being with vertical energy dissipation strip in shear wall, the energy dissipation capacity of structure strengthens greatly.When geological process, low strength concrete between two blocks of wallboards and reinforcing bar form first anti-vibration defense lines, under seismic force effects, seam crossing concrete is first crushed, connecting reinforcement is out of shape, this process serves good energy-dissipating and shock-absorbing effect, and under geological process, maximum seismic displacement response can reduce 10% ~ 30%.Apply prefabricated high strength RC to establish low strong energy dissipation strip shear wall effectively can alleviate the day by day deficient and a large amount of sandstone of natural aggregate to be exploited problems such as the destructions that ecological environment causes; Promote high tensile reinforcement and high-strength concrete operation technique simultaneously, accelerated China and shorten the paces with developed country's builing industry horizontal range.Therefore prefabricated high strength RC establishes low strong energy dissipation strip shear wall to be a kind of Novel concrete member be worthy to be popularized.
Accompanying drawing explanation
Fig. 1 is that the prefabricated high strength RC of the present invention establishes low strong energy dissipation strip shear wall schematic diagram;
Fig. 2 is that the prefabricated high strength RC of the present invention establishes low strong energy dissipation strip shear wall A-A schematic cross-section.
Accompanying drawing illustrates: the prefabricated mechanical of high strength reinforced concrete RC wall of 1-; Horizontal reinforcement in 2-shear wall; Vertical reinforcement in 3-shear wall; 4-connecting hole; 5-connecting reinforcement; The elongated longitudinal reinforcement of 6-; 7-dense mesh; 8-low strength concrete.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail:
Embodiment: as shown in Figure 1-2, Fig. 1 is that the prefabricated high strength RC of the present invention establishes low strong energy dissipation strip shear wall schematic diagram, and Fig. 2 is that the prefabricated high strength RC of the present invention establishes low strong energy dissipation strip shear wall A-A schematic cross-section.
The prefabricated high strength RC of one of the present invention establishes low strong energy dissipation strip shear wall, combines primarily of prefabricated mechanical of high strength reinforced concrete RC wallboard 1, connecting reinforcement 5, elongated vertical muscle 6 and low strength concrete 8.This prefabricated high strength RC establishes the practice of low strong energy dissipation strip shear wall, and its production order is as follows:
1) lift first piece of precast shear wall 1, the vertical reinforcement 3 stretched out to be inserted in the reserved reinforced hole of Vierendeel girder and to be in the milk bottom shear wall;
2) connecting reinforcement 5 is inserted in connecting hole 4;
3) second piece of precast shear wall is installed, first vertical reinforcement bottom it is inserted in preformed hole during installation, again connecting reinforcement 5 is inserted into a part in the connecting hole of second piece of precast shear wall, makes connecting reinforcement length in the connecting hole of both sides impartial, in the connecting hole of both sides, pour into anchoring adhesive;
4) longitudinally elongated reinforcing bar colligation is good is inserted;
5) dense mesh is arranged in seam both sides;
6) formwork supporting plate builds low strength concrete.
Method of attachment of the present invention can be widely used in the connection between prefabricated high-strength concrete wallboard.Under little shake effect, the effective connection between prefabricated panel can be ensured, ensure the globality of shear wall structure; The enough effective connections of seam join domain and good energy dissipation capacity can be realized under middle shake and large shake effect.Design concept of the present invention is simple, and easy construction, is conducive to applying on a large scale.

Claims (10)

1. a prefabricated high strength RC establishes low strong energy dissipation strip shear wall, it is characterized in that: shear wall concrete used is high-strength concrete, in shear wall, horizontal reinforcement (2) and vertical reinforcement (3) are high tensile reinforcement, wherein horizontal reinforcement (2) stretches out shear wall place and does crotch process, the side of shear wall from top to bottom spaced set bar connecting hole (4), two pieces of corresponding connecting holes of shear wall are at same level height, two pieces of shear walls insert connecting reinforcement (5) when connecting, longitudinally elongated reinforcing bar (6) inserts in crotch, low strength concrete (8) is built between two pieces of shear walls.
2. prefabricated high strength RC according to claim 1 establishes low strong energy dissipation strip shear wall, it is characterized in that: high tensile reinforcement is III grade of reinforcing bar or Ⅳ-grade steel muscle by mechanical property; High-strength concrete is the concrete of more than C60 by label.
3. prefabricated high strength RC according to claim 1 establishes low strong energy dissipation strip shear wall, it is characterized in that: horizontal reinforcement (2) stretches out shear wall place and does 135 ocrotch.
4. prefabricated high strength RC according to claim 1 establishes low strong energy dissipation strip shear wall, it is characterized in that: connecting reinforcement (5) and longitudinally elongated reinforcing bar (6) are HPB235, HPB300 or HRB335, wherein connecting reinforcement (5) length is 300 ~ 500mm, and diameter is not less than horizontal reinforcement in shear wall (2) diameter.
5. prefabricated high strength RC according to claim 1 establishes low strong energy dissipation strip shear wall, it is characterized in that: connecting hole spacing and connecting hole are not less than a connecting hole diameter d apart from nearest reinforcing bar distance in shear wall o.
6. prefabricated high strength RC according to claim 1 establishes low strong energy dissipation strip shear wall, it is characterized in that: two pieces of shear wall spacing are 100 ~ 150mm.
7. prefabricated high strength RC according to claim 1 establishes low strong energy dissipation strip shear wall, it is characterized in that: low strength concrete is the concrete concrete that label is less than C25.
8. prefabricated high strength RC according to claim 1 establishes low strong energy dissipation strip shear wall; it is characterized in that: before building low-strength concrete, dense mesh is set; two pieces of shear wall seam both sides arrange two pieces of dense meshes and dense mesh is parallel with shear wall, and outside dense mesh, thickness of concrete cover is 10-15mm.
9. according to Claim 8 described in prefabricated high strength RC establish the practice of low strong energy dissipation strip shear wall, it is characterized in that: its order is as follows:
1) make shear wall (1), with high tensile reinforcement colligation shear wall horizontal reinforcement (2) and vertical reinforcement (3), reserve connecting hole (4) during formwork, build high-strength concrete;
2) first fix the position of first piece of shear wall (1) during site operation, in connecting hole (4), insert connecting reinforcement (5), fix another block shear wall, connecting reinforcement is inserted in second piece of shear wall connecting hole;
3) longitudinally elongated reinforcing bar (6) good with steel wire lashing is inserted at two shear wall horizontal reinforcement (2) crotch places;
4) dense mesh (7) is arranged two pieces of shear wall seam both sides;
5) formwork supporting plate builds low strength concrete (8).
10. according to claim arbitrary in claim 1-7, prefabricated high strength RC establishes the practice of low strong energy dissipation strip shear wall, it is characterized in that: its order is as follows:
1) make shear wall (1), with high tensile reinforcement colligation shear wall horizontal reinforcement (2) and vertical reinforcement (3), reserve connecting hole (4) during formwork, build high-strength concrete;
2) first fix the position of first piece of shear wall (1) during site operation, in connecting hole (4), insert connecting reinforcement (5), fix another block shear wall, connecting reinforcement is inserted in second piece of shear wall connecting hole;
3) longitudinally elongated reinforcing bar (6) good with steel wire lashing is inserted at two shear wall horizontal reinforcement (2) crotch places;
4) formwork supporting plate builds low strength concrete (8).
CN201210529829.1A 2012-12-10 2012-12-10 Prefabricated high strength reinforced concrete shear wall with low strength energy dissipation strip and fabrication method Active CN103046669B (en)

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Publication number Priority date Publication date Assignee Title
CN103422674B (en) * 2013-09-03 2016-03-30 二十二冶集团第一建设有限公司 Prefabricated concrete structure Cast-in-Situ Segment concrete construction method
CN103981998B (en) * 2014-05-28 2015-11-11 王睿敏 The construction method of precast shear wall plate and shear wall and shear wall
CN110644645A (en) * 2019-09-16 2020-01-03 佛山建装建筑科技有限公司 Prefabricated column wall and construction method of vertical joint of prefabricated column wall

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CN101041981A (en) * 2007-04-30 2007-09-26 哈尔滨工业大学 Reinforcing bars building block short-limb masonry shear wall structure
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CN101429787A (en) * 2007-11-09 2009-05-13 上海瑞安房地产发展有限公司 Prefabricated thermal insulation exterior wall and method for producing the same
CN101614042A (en) * 2009-07-27 2009-12-30 邱明兵 The control plastic hinge brings out existing anti-seismic construction measure at Vierendeel girder
CN102433945A (en) * 2011-08-30 2012-05-02 东南大学 Vertical mixed connection structure and method of prefabricated internal wallboards for assembling shear wall structure
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