CN108060730A - A kind of new concrete shear wall with short piers - Google Patents
A kind of new concrete shear wall with short piers Download PDFInfo
- Publication number
- CN108060730A CN108060730A CN201711382620.6A CN201711382620A CN108060730A CN 108060730 A CN108060730 A CN 108060730A CN 201711382620 A CN201711382620 A CN 201711382620A CN 108060730 A CN108060730 A CN 108060730A
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- China
- Prior art keywords
- sleeper
- shear wall
- bar
- mat reinforcement
- concrete shear
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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
Abstract
The present invention relates to a kind of new concrete shear wall with short piers, it include foundation beam, top beam, the double bar-mat reinforcement between foundation beam and top beam, it is multiple for socket double bar-mat reinforcement tension rib and be located at wall acra and the sleeper of wall limb corner, the sleeper indulges muscle by sleeper and sleeper stirrup forms, and the double bar-mat reinforcement is made of genesis analysis reinforcing bar and transversely distributed steelbar；The oblique concealed bracings in X-shaped arrangement are equipped between double bar-mat reinforcement, the oblique concealed bracings are by the opposite marmem Shu Zucheng of two inclined directions, two marmem beams are bound on the genesis analysis reinforcing bar of front-seat bar-mat reinforcement, and the both ends of two marmem beams are fixed on by fixture in foundation beam and top beam.The invention further relates to a kind of methods for building new concrete shear wall with short piers.New concrete shear wall with short piers construction of the present invention is reasonable, and easy for construction, self-resetting capability is strong；The method of construction simple possible.
Description
Technical field
The invention belongs to architectural engineering anti-seismic technology fields, specifically, are related to a kind of new concrete shear wall with short piers.
Background technology
With the high speed development of Chinese national economy and the continuous quickening of urbanization process, people are to housing plan and space
Requirement it is higher and higher, previous frame-generic structure head beam dew column and lack aesthetics and common shear wall structure is set not
The requirement of modern people to house in all directions flexibly cannot be met gradually, then on the basis of original shear wall, progressively drilled
It has been deformed into new building structure --- shear wall with short piers.Shear wall with short piers generally refers to section thickness no more than 300mm, wall
The shear wall of the ratio between limb depth of section and thickness between 4-8.Shear wall with short piers is easy with structure flexible arrangement, building function
In meet, cost is relatively low, wall is easy to punch, the advantages that preferably meeting architectural lighting ventilation, increasingly deeper by premises
Produce the favor of developer and user.Currently, various countries' structural aseismatic design is mostly using " no damage in small earthquake, middle shake can be repaiied, shaken greatly not
Criterion of setting up defences ".In providing fortification against earthquakes, geological process is often unlikely to that short-shear wall structure house is caused to lose carrying
Power, but often easily make building structure energy consumption relatively low and be also easy to produce larger residual deformation, the appearance of deformation seriously affects building
Aesthetics and durability are repaired after being also not susceptible to shake.How a kind of appropriate method is found to improve the energy consumption of shear wall with short piers,
Become earthquake engineering research person's urgent problem to be solved.
Based on the above situation, there is an urgent need for design a kind of new shear wall with short piers that can be solved the above problems.
The content of the invention
It is only it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of new concrete shear wall with short piers
The use of special structure feature and new material can absorb seismic energy and reduce the residual deformation of structure after shake.
New concrete shear wall with short piers of the present invention includes foundation beam, top beam, between foundation beam and top beam
Double bar-mat reinforcement, it is multiple for socket double bar-mat reinforcement tension rib and be located at wall acra and the sleeper of wall limb corner,
The sleeper indulges muscle by sleeper and sleeper stirrup forms, and the double bar-mat reinforcement is by genesis analysis reinforcing bar and transversely distributed steelbar
Composition；The oblique concealed bracings in X-shaped arrangement are equipped between double bar-mat reinforcement, the oblique concealed bracings are by two inclined direction phases
Anti- marmem Shu Zucheng, two marmem beams bind the genesis analysis reinforcing bar in front-seat bar-mat reinforcement
On, the both ends of two marmem beams are fixed on by fixture in foundation beam and top beam.
Further, two marmem beams are made of four shape-memory alloy wires.
Further, the shape-memory alloy wire is nitinol alloy wire.
Further, the nitinol alloy wire is at room temperature in the nitinol alloy wire of austenite phase.
Further, wall limb cross sectional shape is linear type, L-shaped or T-shaped.
The present invention also provides a kind of method for building the new concrete shear wall with short piers, the described method includes：
(a) immobilizing foundation beam；
(b) sleeper is set to indulge muscle and genesis analysis reinforcing bar, the sleeper indulges muscle and genesis analysis reinforcing bar extend into basis
Liang Zhong；
(c) transversely distributed steelbar is set, forms bar-mat reinforcement, sleeper stirrup is set, forms sleeper；
(d) top beam is configured；
(e) two marmem beams are bound on front-seat genesis analysis reinforcing bar, and by two marmem beams
Both ends be fixed on fixture in foundation beam and top beam, formed X arrangement oblique concealed bracings；
(f) tension rib is set；
(g) reserve protective layer thickness and template is set；
(h) casting concrete is conserved to shaping.
Beneficial effects of the present invention：
New concrete short-shear wall structure of the present invention is reasonable, material is novel, superior performance, runback potential energy
Power can effectively reduce the component damage and rehabilitation expense after structure shake.
The method of construction of new concrete shear wall with short piers of the present invention is easy to operate, the introducing of marmem beam
Not to the unnecessary trouble of introducing is built, large-scale promotion application can be industrially obtained.
Description of the drawings
Fig. 1 is the web reinforcement schematic diagram of L-shaped concrete shear wall with short piers described in the embodiment of the present invention 1；
Fig. 2 is the wall limb schematic cross-section of L-shaped concrete shear wall with short piers described in the embodiment of the present invention 1；
Fig. 3 is the web reinforcement schematic diagram of T-shaped concrete shear wall with short piers described in the embodiment of the present invention 2；
Fig. 4 is the wall limb schematic cross-section of T-shaped concrete shear wall with short piers described in the embodiment of the present invention 2.
In figure：
Foundation beam 1；Top beam 2；Bar-mat reinforcement 3；Genesis analysis reinforcing bar 3.1；Transversely distributed steelbar 3.2；Tension rib 4；Sleeper 5；
Sleeper indulges muscle 5.1；Sleeper stirrup 5.2；Marmem beam 6；Fixture 7.
Specific embodiment
Below in conjunction with the attached drawing performance that the present invention will be described in detail, but they do not form limitation of the invention, only make
Citing.Simultaneously by the way that the present invention is described in further detail with specific implementation.
" room temperature " of the present invention refers to temperature by about 10 DEG C to about 40 DEG C.In some embodiments, " room temperature "
Refer to temperature by about 20 DEG C to about 30 DEG C；In other embodiments, " room temperature " refers to 20 DEG C, 22.5 DEG C, 25
DEG C, 27.5 DEG C etc..
" austenite phase " of the present invention and " martensitic phase " be Nitinol two kinds of states that can be mutually converted, two kinds
The mechanism of state is the change of temperature or stress.
The present invention provides a kind of new concrete shear wall with short piers, it includes foundation beam, top beam, positioned at foundation beam and
It is double bar-mat reinforcement between top beam, multiple for socketing the tension rib of double bar-mat reinforcement and be located at wall acra and wall limb corner
Sleeper, the sleeper indulges muscle by sleeper and sleeper stirrup forms, and the double bar-mat reinforcement is by genesis analysis reinforcing bar and transverse direction
Distribution bar forms；The double bar-mat reinforcement is made of genesis analysis reinforcing bar and transversely distributed steelbar；Double bar-mat reinforcement it
Between be equipped in X-shaped arrangement oblique concealed bracings, the oblique concealed bracings are by the opposite marmem beam of two inclined directions
Composition, two marmem beams are bound on the genesis analysis reinforcing bar of front-seat bar-mat reinforcement, two shape notes
The both ends for recalling alloy beam are fixed on by fixture in foundation beam and top beam.New concrete shear wall with short piers structure of the present invention
It makes simply, easy for construction, self-resetting capability is strong.The present invention is provided with oblique concealed bracings between double bar-mat reinforcement, improves short
The energy dissipation ability and bearing capacity of limb shear wall limit the shearing slip of shear wall bottom.Oblique concealed bracings are arranged on
It is not only easy for construction on front-seat bar-mat reinforcement, the characteristic of house inner wall stress bigger in earthquake also is compliant with, is further improved anti-
Shake energy consumption.Oblique concealed bracings of the present invention are supportted using marmem bundle branch, and self-resetting capability is better than regular reinforcement beam.
Embodiment according to the present invention, two marmem beams are by four shape-memory alloy wires
Composition.Inventor, which tests, to be found, four shape-memory alloy wires can effectively antagonize the influence that earthquake brings wall, while will not
Larger promotion is generated to cost.
Embodiment according to the present invention, the shape-memory alloy wire are nitinol alloy wire.By nitinol alloy wire
Oblique concealed bracings obtained can absorb more seismic energy when meeting with earthquake, reduce the remaining shape of structure after shake as far as possible
Become.
Embodiment according to the present invention, the nitinol alloy wire is at room temperature in the Nitinol of austenite phase
Silk.The nitinol alloy wire in austenite phase brings it about deformation by applying imposed load, with the continuation of imposed load
Effect, the material meeting stress being now under austenitic state induce and generate unstable martensitic traoformation, occur notable
Plastic deformation, remove its strain when imposed load stress is zero and also return to zero.In one embodiment, described is in austenite phase
Nitinol alloy wire recoverable strain can reach 8%, ultimate deformation is up to 20%；In another embodiment, described is in Ovshinsky
The yield stress of the nitinol alloy wire of body phase can reach 500MPa, and the ultimate strength of material is more than 1000MPa, hence it is evident that higher than common
Reinforcing bar.
Embodiment according to the present invention, wall limb cross sectional shape are linear type, L-shaped or T-shaped.Preferably, for L-shaped or
Person's T-shaped.
Embodiment according to the present invention, the fixture are the cuboid bloom with spiral circle hole among two panels,
Concealed bracings alloy material is fixedly clamped by split bolt.
Embodiment 1L shape concrete shear wall with short piers
L-shaped concrete shear wall with short piers as depicted in figs. 1 and 2, thickness of wall body 100mm, wall limb height are
1400mm, wall limb both direction width be 650mm and 325mm, axial compression ratio 0.2.
It includes foundation beam 1, top beam 2 and positioned at the double bar-mat reinforcement 3 set between foundation beam 1 and top beam 2.Each bar-mat reinforcement
3 are made of genesis analysis reinforcing bar 3.1 and transversely distributed steelbar 3.2, and the genesis analysis reinforcing bar 3.1 is a diameter of 8mm's
HRB400 reinforcing bars, the spacing of every two genesis analysis reinforcing bars 3.1 is 100mm, and the transversely distributed steelbar 3.2 is a diameter of 6mm
HPB300 reinforcing bars, the spacing of every two transversely distributed steelbars 3.2 is 100mm, wall both sides bar-mat reinforcement 3 by tension rib 4 into
Row sockets fixation.
Sleeper 5 is respectively provided at the both ends of wall limb and corner, the sleeper 5 indulges 5.2 groups of muscle 5.1 and sleeper stirrup by sleeper
Into the longitudinal section of the sleeper 5 is the square structure of 100mm × 100mm, four a diameter of 12mm's of each configuration of sleeper 5
HRB400 reinforcing bars indulge muscle 5.1 for sleeper, and the sleeper stirrup 5.2 is the HRB400 reinforcing bars of a diameter of 8mm.
The oblique concealed bracings of X-shaped are equipped between double bar-mat reinforcement 3, the oblique concealed bracings are by two marmem beams
6 form, and the nitinol alloy wire of four a diameter of 3mm is included in each marmem beam 6, the nitinol alloy wire
Recoverable strain can reach 8%, and yield stress can be 500MPa, and ultimate strength is more than 1000MPa.Two described in the present embodiment
A shape memory alloys beam 6 is bound on the genesis analysis reinforcing bar 3.1 of front-seat bar-mat reinforcement 3, the both ends of two shape memory alloys beams 6
It is fixed on by fixture 7 in foundation beam 1 and top beam 2.
The method for building L-shaped concrete shear wall with short piers as depicted in figs. 1 and 2：
The vertical muscle and stirrup of foundation beam 1 are subjected to blanking and fixation first, sleeper is then indulged into muscle 5.1 and genesis analysis steel
Muscle 3.1 is inserted into foundation beam 1 and interim tied silk banding fixed is carried out in foundation beam 1 respectively.By transversely distributed steelbar 3.2 from
3.1 top of genesis analysis reinforcing bar according to design spacing is inserted in downwards and is fixed using tied silk successively, forms bar-mat reinforcement 3；It carries out dark
The binding of column tie-bar 5.2 forms sleeper 5.Bind the reinforcing bar of top beam 2.
Oblique concealed bracings are arranged between two rows of bar-mat reinforcements 3, i.e., two shapes are bound on front-seat genesis analysis reinforcing bar 3.1
Memorial alloy beam 6, and the both ends fixture 7 of two marmem beams 6 is fixed in foundation beam 1 and top beam 2.It is drawn
Knot muscle 4 is bound.Protective layer thickness is reserved after the completion of skeleton and template is set, last casting concrete is conserved 28 days and is molded.
Embodiment 2T shape concrete shear wall with short piers
T-shaped concrete shear wall with short piers as shown in Figure 3 and Figure 4, except in addition to end set sleeper 5, need to also be turned in T-shaped
Sleeper 5 is set along both direction at angle.Rest part is the same as embodiment 1.
Comparative example 1 is free of the L-shaped concrete shear wall with short piers of oblique concealed bracings
Structures and methods according to embodiment 1 build comparative example 1, wherein being not provided with oblique concealed bracings 6.
The L-shaped concrete shear wall with short piers of the oblique concealed bracings of 2 steel tendon of comparative example
Structures and methods according to embodiment 1 build comparative example 2, wherein oblique concealed bracings 6 are prepared using steel tendon
It forms, the steel tendon is formed using (four), the steel wire of a diameter of 3mm.
Contrast test：Low-cycle Test
Experiment process divides three phases：
1. preloading phase before experiment：Before experiment, first pre-add cyclic reverse loading is secondary, and vertical load adds to pre- constant load
50%, horizontal pre-loaded value calculates the 20% of cracking load for test specimen, and main purpose is that elimination test specimen inside is that may be present not
Uniformity.
2. load controls the stage：Vertical load is applied according to the axial compression ratio of design first, and is kept not during experiment
Become.Then reciprocal horizontal loading is applied, every grade cycles 1 time, and every grade of load is 10kN.According on the outside of test specimen bottom end edge
Reinforcing bar reaches yield strain and judges test specimen surrender, and records corresponding yield displacement.
3. the Bit andits control stage：Bit andits control is changed to after test specimen surrender, by the multiple CYCLIC LOADING of yield displacement, per level-one
Displacement cycle 3 times, when test specimen can not bearing load or horizontal loading drop to 85% or so of peak load again when, experiment knot
Beam.
Table 1：Comparative test result：
The ultimate load of embodiment 1 is respectively increased compared with comparative example 1 and comparative example 2 it can be seen from the data of table one
57.7% and 29.5%, 45.7% and 26.4% has then been respectively increased in extreme displacement.Fractue spacing scope after the experiment of embodiment 1
More extensively and evenly, wherein maximum crack width and remaining fracture width is substantially reduced.And the residual deformation of embodiment 1 is then
9mm has been narrowed down to, has reduced 51.4% and 44.1% respectively on year-on-year basis, has illustrated the oblique concealed bracings for adding nitinol alloy wire composition
Afterwards, the runback bit function of wall is good.Per under level-one load action, the hysteretic loop that load-displacement curve is surrounded typically represents examination
The size of part energy consumption, this experiment wall hysteretic loop is fuller, area bigger, illustrates the concealed bracings for adding nitinol alloy wire composition
The energy consumption of back wall is more preferable.
The foregoing is merely the exemplary embodiments of the present invention, do not limit the present invention with this, all spirit in the present invention and
All any modification, equivalent and improvement made within principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of new concrete shear wall with short piers, including foundation beam (1), top beam (2), positioned at foundation beam (1) and top beam (2) it
Between double bar-mat reinforcement (3), multiple for socketing the tension rib (4) of double bar-mat reinforcement (3) and be located at wall acra and wall limb turn
Sleeper (5) at angle, the sleeper (5) indulges muscle (5.1) by sleeper and sleeper stirrup (5.2) forms, the double bar-mat reinforcement (3)
It is made of genesis analysis reinforcing bar (3.1) and transversely distributed steelbar (3.2)；It is characterized in that：It is set between double bar-mat reinforcement (3)
There are the oblique concealed bracings in X-shaped arrangement, the oblique concealed bracings are by opposite marmem beam (6) group of two inclined directions
Into two marmem beams (6) are bound on the genesis analysis reinforcing bar (3.1) of front-seat bar-mat reinforcement (3), two institutes
The both ends for stating marmem beam (6) are fixed on by fixture (7) in foundation beam (1) and top beam (2).
2. new concrete shear wall with short piers according to claim 1, which is characterized in that two marmems
Beam (6) is made of four shape-memory alloy wires.
3. new concrete shear wall with short piers according to claim 2, which is characterized in that the shape-memory alloy wire is
Nitinol alloy wire.
4. new concrete shear wall with short piers according to claim 3, which is characterized in that the nitinol alloy wire is room temperature
It is in the nitinol alloy wire of austenite phase down.
5. the new concrete shear wall with short piers according to any one of claim 1-4, which is characterized in that wall limb section shape
Shape is linear type, L-shaped or T-shaped.
6. a kind of method for being used to build the new concrete shear wall with short piers any one of claim 1-5, feature
It is：The described method includes
(a) immobilizing foundation beam (1)；
(b) sleeper is set to indulge muscle (5.1) and genesis analysis reinforcing bar (3.1), the sleeper indulges muscle (5.1) and genesis analysis reinforcing bar
(3.1) it extend into foundation beam (1)；
(c) transversely distributed steelbar (3.2) is set, forms bar-mat reinforcement (3), sleeper stirrup (5.2) is set, forms sleeper (5)；
(d) top beam (2) is configured；
(e) two marmem beams (6) are bound on front-seat genesis analysis reinforcing bar (3.1), and two shape memories are closed
The both ends of Jin Shu (6) are fixed on fixture (7) in foundation beam (1) and top beam (2), form the oblique concealed bracings of X arrangements；
(f) tension rib (4) is set；
(g) reserve protective layer thickness and template is set；
(h) casting concrete is conserved to shaping.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711382620.6A CN108060730A (en) | 2017-12-20 | 2017-12-20 | A kind of new concrete shear wall with short piers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711382620.6A CN108060730A (en) | 2017-12-20 | 2017-12-20 | A kind of new concrete shear wall with short piers |
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| Publication Number | Publication Date |
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| CN108060730A true CN108060730A (en) | 2018-05-22 |
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ID=62139405
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| CN201711382620.6A Pending CN108060730A (en) | 2017-12-20 | 2017-12-20 | A kind of new concrete shear wall with short piers |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804264A (en) * | 2006-01-18 | 2006-07-19 | 北京工业大学 | Profiled short-pier shear wall with rung steel bar support |
| CN101230602A (en) * | 2007-09-06 | 2008-07-30 | 同济大学 | Profiled bar concrete combination shearing wall and construction method thereof |
| CN101424105A (en) * | 2008-12-05 | 2009-05-06 | 北京工业大学 | Oblique steel support concrete shear wall composite coupling beams and production method thereof |
| CN201713959U (en) * | 2010-04-02 | 2011-01-19 | 陈云 | Novel stretchable pressing reinforced concrete support |
| CN103184774A (en) * | 2013-01-22 | 2013-07-03 | 北京工业大学 | Single-row reinforced concrete shear wall provided with cross diagonal bars and manufacturing method thereof |
| CN107460972A (en) * | 2017-09-15 | 2017-12-12 | 江苏省建筑科学研究院有限公司 | A kind of assembled steel support frame Strengthened Masonry Walls load bearing wall and reinforced construction method |
-
2017
- 2017-12-20 CN CN201711382620.6A patent/CN108060730A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804264A (en) * | 2006-01-18 | 2006-07-19 | 北京工业大学 | Profiled short-pier shear wall with rung steel bar support |
| CN101230602A (en) * | 2007-09-06 | 2008-07-30 | 同济大学 | Profiled bar concrete combination shearing wall and construction method thereof |
| CN101424105A (en) * | 2008-12-05 | 2009-05-06 | 北京工业大学 | Oblique steel support concrete shear wall composite coupling beams and production method thereof |
| CN201713959U (en) * | 2010-04-02 | 2011-01-19 | 陈云 | Novel stretchable pressing reinforced concrete support |
| CN103184774A (en) * | 2013-01-22 | 2013-07-03 | 北京工业大学 | Single-row reinforced concrete shear wall provided with cross diagonal bars and manufacturing method thereof |
| CN107460972A (en) * | 2017-09-15 | 2017-12-12 | 江苏省建筑科学研究院有限公司 | A kind of assembled steel support frame Strengthened Masonry Walls load bearing wall and reinforced construction method |
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Application publication date: 20180522 |