CN109252604A - A kind of shear wall with short piers of built-in prestressing combination diagonal brace - Google Patents
A kind of shear wall with short piers of built-in prestressing combination diagonal brace Download PDFInfo
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- CN109252604A CN109252604A CN201811041209.7A CN201811041209A CN109252604A CN 109252604 A CN109252604 A CN 109252604A CN 201811041209 A CN201811041209 A CN 201811041209A CN 109252604 A CN109252604 A CN 109252604A
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- diagonal brace
- wall
- limb
- short
- prestressing
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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
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a kind of shear wall with short piers of built-in prestressing combination diagonal brace, including upper layer beam, lower layer's beam, short-limb wall wall limb, prestressing combination diagonal brace；The short-limb wall wall limb is fixedly connected with upper layer beam and lower layer's beam, in I-shaped；The prestressing combination diagonal brace is equipped with two groups, is located inside short-limb wall wall limb, is in herringbone or V-shaped, and the anchored end of prestressing combination diagonal brace connects upper layer beam, and the stretching end of prestressing combination diagonal brace connects lower layer's beam by anchor plate.Prestressing technique is applied in shear wall by the present invention, novel short-shear wall structure is constructed using prestressing technique and high damping material, simple structure, it is convenient to construct, the high-rise development trend with new structural systen in super high-rise building can be met according to the anti-seismic performance demand of building structure, important or have the position of high performance demands to be applied by reasonably constituting and connecting, the needs for meeting China's the cause of earthquake prevention and disaster alleviation have important practical meaning in engineering and social effect.
Description
Technical field
The present invention relates to construction engineering technical field, in particular to a kind of manomelia shearing of built-in prestressing combination diagonal brace
Wall.
Technical background
Shear wall is the core lateral resistant member in high building structure, and reasonable shear wall system, which can become, resists earthquake
It acts on, avoid or the reliable defence line of earthquake disaster mitigation, act on very crucial.Shear wall with short piers is that China mentions for nearly more than 20 years
There are the forms such as one, T, L, cross in a kind of novel shear wall out, common section, and the ratio between each limb cross-sectional height and thickness are most
Big value is greater than 4 but is not more than 8.Compared with common shear wall, due to its thickness and filling wall uniform thickness, so sectional dimension is relatively
It is small, can overcome head beam in the column framework of traditional rectangular section, dew column unsightly with it is unfavorable use, common shear wall structure
The weakness such as the considered critical to space have excellent building efficiency in the beauty of space and using upper, meet me
The idea of development of state's modern high-rise building house.The rigidity of structure can be reduced in right amount because sectional dimension becomes smaller simultaneously, to improve general
The logical disadvantage that shear wall structure overall stiffness is bigger than normal, natural vibration period is too short, reduces geological process, becomes one kind and be highly suitable for height
New structural systen with good development prospect in layer Residential structure.
But manomelia concrete shear force wall (the hereinafter referred to as common short-limb wall) wall thickness for configuring regular reinforcement is limited opposite
Thin, diagonal brace dislocation arrangement will lead to its outer thickness of concrete cover and reduce, and be unfavorable for the collaborative work of abdomen steel-concrete, together
When it is prestressed apply it is improper directly result in wall plane stability reduction.If the direct arranged crosswise of diagonal brace, needs to disconnect
And the problems such as it is difficult to cause connection to make, and prestress application interference, bearing capacity are small, and anti-seismic performance is relatively poor, therefore its work
Cheng Yingyong is limited by more, and existing national regulation " technical specification for concrete structures of high-rise building " (JGJ3-2010) is (following
Referred to as " height rule ") its quantity, maxi-mum height and it is applicable in terms of propose stringent limitation.Manomelia how is solved to cut
The performance deficiency of power wall keeps its application range wider, it has also become an engineering circles extensive concern and major issue urgently to be resolved.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of manomelias of built-in prestressing combination diagonal brace to cut
Power wall, comprehensive utilization prestressing technique and the new approaches for having damping diagonal brace, prestressing combination diagonal brace reasonable disposition is cut to manomelia
In power wall, the Short Pier Shear Wall Structures of built-in prestressing combination diagonal brace are formed, the cracking mechanism of shear wall with short piers is improved
And Stiffness Deterioration, promote its energy dissipation behavior and Seismic Bearing Capacity.
The technical solution of the present invention is as follows: a kind of shear wall with short piers of built-in prestressing combination diagonal brace, including upper layer beam, lower layer
Beam, short-limb wall wall limb, prestressing combination diagonal brace；The short-limb wall wall limb is fixedly connected with upper layer beam and lower layer's beam, and whole is in I-shaped
Shape；The prestressing combination diagonal brace is equipped with two groups, is located inside short-limb wall wall limb, is in herringbone or V-shaped, and prestressing combination is oblique
The anchored end of support connects upper layer beam, and the stretching end of prestressing combination diagonal brace connects lower layer's beam by anchor plate.
Further, the prestressing combination diagonal brace includes deformed bar and rectangular steel pipe；The deformed bar is worn
It crosses rectangular steel pipe and constitutes prestressing combination diagonal brace.
Preferably, the material of the deformed bar is fining twisted steel, has the characteristics that high-intensitive, high dimensional accuracy.
Further, high damping material is perfused inside the rectangular steel pipe, the high damping material includes high-damping coagulation
Soil, high-damping mortar and high-damping high molecular material；High damping material has biggish plastic property, mutual with presstressed reinforcing steel
Effect, will increase the energy dissipation capacity of shear wall.
Preferably, the shape of the anchor plate is π font.
The beneficial effects of the present invention are: the shear wall with short piers of built-in prestressing combination diagonal brace of the invention, for existing skill
Art deficiency proposes some improvement: 1, prestressed stretch-draw position being changed supreme lower beam-ends, provide convenience for prestressed stretch-draw；
2, by increasing stress area, improve the unfavorable stress that stress is concentrated, to reduce the loss of prestress of possible generation；3,
Using high damping material substitute grout and mortar, the diagonal brace realize be provided simultaneously with common diagonal bracing effect, to structure apply prestressing force,
Have the functional advantage of three aspect such as damping characteristic, achievees the purpose that improve shear wall with short piers Stiffness Deterioration；4, built in the present invention
The shear wall with short piers of prestressing combination diagonal brace, structure simple structure, it is convenient to construct, can be according to building by reasonably constituting and connecting
The anti-seismic performance demand of building structure, important or have the position of high performance demands to be applied, security performance is reliable and stable, meets
The high-rise development trend with new structural systen in super high-rise building, meets the needs of China's the cause of earthquake prevention and disaster alleviation, has emphatically
The practical meaning in engineering and social effect wanted.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the shear wall with short piers of prestressing combination diagonal brace built in the present invention.
Fig. 2 is the structural schematic diagram of prestressing combination diagonal brace.
Fig. 3 is the inside arrangement of reinforcement perspective view of the shear wall with short piers of prestressing combination diagonal brace built in the present invention.
Fig. 4 is the stress diagram of prestressing combination diagonal brace.
Appended drawing reference: upper layer beam 1, lower layer's beam 2, short-limb wall wall limb 3, prestressing combination diagonal brace 4, anchored end 5, stretching end 6,
Deformed bar 7, anchor plate 8, rectangular steel pipe 9, steel reinforcement cage 10, lattice steel column 11, horizontal force A, pull rod B, compression bar C, abdomen
Plate diagonal crack D.
Specific embodiment
Implementation structure of the invention is described below in conjunction with attached drawing.
As depicted in figs. 1 and 2, the shear wall with short piers of prestressing combination diagonal brace built in the present invention, including upper layer beam 1, lower layer
Beam 2, short-limb wall wall limb 3, prestressing combination diagonal brace 4；Short-limb wall wall limb 3 is fixedly connected with upper layer beam 1 and lower layer's beam 2, and whole is in work
Font；Prestressing combination diagonal brace 4 is equipped with two groups, is located inside short-limb wall wall limb 3, is in herringbone, the anchor of prestressing combination diagonal brace 4
Fixed end 5 connects upper layer beam 1, and the stretching end 6 of prestressing combination diagonal brace 4 connects lower layer's beam 2 by anchor plate 8；The shape of anchor plate 8
Preferably π font plays the role of dispersing local stress.
As shown in Fig. 2, prestressing combination diagonal brace 4 includes deformed bar 7 and rectangular steel pipe 9；Deformed bar 7 passes through square
Shape steel pipe 9 constitutes prestressing combination diagonal brace 4；The material of deformed bar 7 is preferably fining twisted steel, because its have it is high-intensitive,
The features such as high dimensional accuracy；High damping material is perfused inside rectangular steel pipe 9, high damping material includes high spin system, high resistant
Buddhist nun's mortar and high-damping high molecular material；High damping material has biggish plastic property, and the interaction with presstressed reinforcing steel will
Increase the energy dissipation capacity of shear wall.
As shown in figure 3,10 reasonable Arrangement of steel reinforcement cage built in the present invention inside the shear wall with short piers of prestressing combination diagonal brace,
Lattice steel column 11 is equipped in the end sleeper of short-limb wall wall limb 3, as combination shear wall with short piers；Otherwise belong to reinforced concrete
Native shear wall with short piers.Lattice steel column 11 is to be formed by connecting using two angle steel and a channel steel by sewing part or four
Angle steel is formed by connecting by sewing part.
As shown in figure 4, constructing corresponding shear wall with short piers according to building requirements, deformed bar 7 uses fining twisted steel,
Herringbone is diagonally disposed in 3 web of short-limb wall wall limb, and under horizontal force A effect, side deformed bar is pull rod B, the other side
Be then compression bar C, the direction of pull rod B and principal tensile stress is close, i.e., directly efficient with weakened web D close to intersecting vertically
Assume responsibility for horizontal shear.Herringbone diagonal brace directly increases the initial stiffness of shear wall, while being applied by deformed bar 7 pre-
Stress, can be applied in web concrete that (it is pre- that diagonal brace can share fraction by going deep into " π " the shape anchor plate 8 of inside concrete
Stress).To the tension side (side pull rod B) of web, which will promote the cracking load of shear wall, improve point in crack
Cloth form and the width for reducing crack increase the occlusion and friction of concrete between crack, so as to improve the rigidity of short-limb wall wall limb 3
It degenerates and consumes energy.It is generated under horizontal force A effect in the compression-side (side compression bar C) of short-limb wall wall limb 3, short-limb wall wall limb 3
Compressive deformation, which can make deformed bar 7 generate prestressing force, to be reduced, to will not increase too much additional to the concrete of compressive region
Preload pressure, and compression diagonal brace and deformed bar 7 become the arrangement of reinforcement in concrete compression area, it is possible to increase short-limb wall wall limb 3
Ductility.
Since the thickness of short-limb wall wall limb 3 is typically no less than 200mm, for the sake of facilitating concrete construction, rectangular steel pipe 9 is cut
Face form and size are preferably comprehensive selected according to the thickness of performance requirement and wall, and section short side is generally preferably 80 to 100mm, and height is then
Preferably select biggish size.Rectangular steel pipe 9 need to take measures to guarantee with the bonds well of concrete, the both ends of length preferably with anchor pad
Reasonable space is reserved between plate, so that compressive pre-stress is transmitted to inside concrete, rectangular steel pipe 9 undertakes smaller prestressing force, in advance
Stress reinforcing bar 7 is through at rectangular steel pipe 9 and forms prestressing combination diagonal brace 4, and prestressed apply peaks at lower end using drawing is very heavy
The one-end tension mode of tensioning.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The variation or simple replacement expected without creative work, should all be included within the scope of the present invention.
Claims (5)
1. a kind of shear wall with short piers of built-in prestressing combination diagonal brace, including upper layer beam (1), lower layer's beam (2), short-limb wall wall limb
(3), prestressing combination diagonal brace (4)；It is characterized by: the short-limb wall wall limb (3) is fixedly connected with upper layer beam (1) and lower layer's beam
(2), whole in I-shaped；The prestressing combination diagonal brace (4) is equipped with two groups, is located at short-limb wall wall limb (3) inside, is in herringbone
Or V-shaped, the anchored end (5) of prestressing combination diagonal brace (4) connect upper layer beam (1), the stretching end of prestressing combination diagonal brace (4)
(6) pass through anchor plate (8) connection lower layer's beam (2).
2. the shear wall with short piers of built-in prestressing combination diagonal brace according to claim 1, it is characterised in that: the prestressing force
Combining diagonal brace (4) includes deformed bar (7) and rectangular steel pipe (9)；The deformed bar (7) passes through rectangular steel pipe (9) structure
At prestressing combination diagonal brace (4).
3. the shear wall with short piers of built-in prestressing combination diagonal brace according to claim 2, it is characterised in that: the prestressing force
The material of reinforcing bar (7) is fining twisted steel.
4. the shear wall with short piers of built-in prestressing combination diagonal brace according to claim 2, it is characterised in that: the rectangle steel
It manages and high damping material is perfused inside (9), the high damping material includes high spin system, high-damping mortar and high-damping high score
Sub- material.
5. the shear wall with short piers of built-in prestressing combination diagonal brace according to claim 1, it is characterised in that: the anchor plate
(8) shape is π font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041209.7A CN109252604A (en) | 2018-09-07 | 2018-09-07 | A kind of shear wall with short piers of built-in prestressing combination diagonal brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041209.7A CN109252604A (en) | 2018-09-07 | 2018-09-07 | A kind of shear wall with short piers of built-in prestressing combination diagonal brace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109252604A true CN109252604A (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811041209.7A Pending CN109252604A (en) | 2018-09-07 | 2018-09-07 | A kind of shear wall with short piers of built-in prestressing combination diagonal brace |
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| CN (1) | CN109252604A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702250A (en) * | 2005-07-08 | 2005-11-30 | 北京工业大学 | Combined concrete shear wall with built-in eccentric supporting steel truss and its making method |
| CN102797306A (en) * | 2012-07-25 | 2012-11-28 | 西安建筑科技大学 | Viscous-plastic energy-dissipation damping support |
| CN103122662A (en) * | 2013-03-19 | 2013-05-29 | 上海沃耳沃建筑材料有限公司 | Buckling restrained brace with viscoelastic materials |
| CN103276806A (en) * | 2013-06-10 | 2013-09-04 | 北京工业大学 | Industrialized assembling type special-shaped column steel structure prestress eccentric supporting system |
| KR20130129668A (en) * | 2012-05-21 | 2013-11-29 | 삼성물산 주식회사 | Coupling beam of shear wall with precast varlable-angle reinforcements using engineered cementitious composites |
| CN106930436A (en) * | 2017-04-26 | 2017-07-07 | 广西大学 | A kind of reinforced concrete shear wall of built-in prestress steel diagonal brace |
-
2018
- 2018-09-07 CN CN201811041209.7A patent/CN109252604A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702250A (en) * | 2005-07-08 | 2005-11-30 | 北京工业大学 | Combined concrete shear wall with built-in eccentric supporting steel truss and its making method |
| KR20130129668A (en) * | 2012-05-21 | 2013-11-29 | 삼성물산 주식회사 | Coupling beam of shear wall with precast varlable-angle reinforcements using engineered cementitious composites |
| CN102797306A (en) * | 2012-07-25 | 2012-11-28 | 西安建筑科技大学 | Viscous-plastic energy-dissipation damping support |
| CN103122662A (en) * | 2013-03-19 | 2013-05-29 | 上海沃耳沃建筑材料有限公司 | Buckling restrained brace with viscoelastic materials |
| CN103276806A (en) * | 2013-06-10 | 2013-09-04 | 北京工业大学 | Industrialized assembling type special-shaped column steel structure prestress eccentric supporting system |
| CN106930436A (en) * | 2017-04-26 | 2017-07-07 | 广西大学 | A kind of reinforced concrete shear wall of built-in prestress steel diagonal brace |
Non-Patent Citations (2)
| Title |
|---|
| 莫自庆: "内置预应力X形组合斜撑型钢混凝土短肢剪力墙抗震性能试验研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 郑廷银: "《多高层房屋钢结构设计与实例》", 31 August 2014 * |
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Application publication date: 20190122 |