CN104805958A - Bi-stage yielding energy dissipation steel coupling beam applied to coupled shear wall structure - Google Patents

Bi-stage yielding energy dissipation steel coupling beam applied to coupled shear wall structure Download PDF

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Publication number
CN104805958A
CN104805958A CN201510152998.1A CN201510152998A CN104805958A CN 104805958 A CN104805958 A CN 104805958A CN 201510152998 A CN201510152998 A CN 201510152998A CN 104805958 A CN104805958 A CN 104805958A
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shear
yielding
surrender
plate
power consumption
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CN201510152998.1A
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CN104805958B (en
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李国强
庞梦德
孙飞飞
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Tongji University
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Tongji University
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Abstract

The invention relates to the technical field of constructional engineering and structures against earthquakes, in particular to a bi-stage yielding energy dissipation steel coupling beam applied to a coupled shear wall structure. The bi-stage yielding energy dissipation steel coupling beam comprises a shear yielding plate beam performing first-stage shear yielding, a bending yielding I beam performing second-stage bending yielding, and beam-end end plates for connecting the shear yielding plate beam and the bending yielding I beam; the shear yielding plate beam is sleeved with the bending yielding I beam; the shear yielding plate beam comprises elastic areas with approximate rigidity at the two ends and a plastic shear yielding energy dissipation area at the middle; the bending yielding I beam comprises flanges subjected to dog-bone treatment at the end parts and a double-webbed plate, so that functions of dissipating energy while providing an additional damping ratio under frequent earthquakes are achieved, moreover, a cross-coupling function when the steel coupling beam serves as a coupling beam is achieved, and a greater energy dissipation effect under seldom earthquake can be achieved. The two-stage yielding energy dissipation steel coupling beam can also be replaced when seismic rehabilitation is carried out, and quick rehabilitation capacity of buildings after a strong earthquake is improved.

Description

Be applied to two rank surrender power consumption steel coupling beams of Coupled Shear Wall structure
Technical field
The present invention relates to construction work and structural seismic technical field, particularly relate to a kind of removable pair of rank surrender power consumption steel coupling beam being applied to Coupled Shear Wall structure.
Background technology
Numerous high levels, super high rise structure is had in modern city.High level, super high rise structure are nervous for solving land used in modern city, play Modern Urban Functions, one of main architectural style that embodiment modern city style and features adopts.The horizontal earthquake action that highrise building bears and wind load larger, the principal element that lateral rigidity controls when becoming structure design, reinforced concrete shear wall due to overall performance good, anti-lateral rigidity is large, bearing capacity is high, the features such as sidesway is little under horizontal loads, are widely used in highrise building.Coupling beam is the dissipative member of the contact two panels wall limb of shear wall structure or frame shear wall structure.Traditional coupling beam generally adopts reinforced concrete coupling beams, but due to building demand, the often span-depth radio of reinforced concrete coupling beams design is less, easily cause the shear failure of reinforced concrete coupling beams, affect ductility and the energy dissipation capacity of coupling beam, too early destruction makes coupling beam can not play the effect of antidetonation the first line of defence by the design object of looking in advance.
In recent years, the country such as the U.S., Canada and New Zealand adopts steel coupling beam to replace reinforced concrete coupling beams, is combined into mixing Coupled Shear Wall by steel coupling beam and reinforced concrete wall limb.Research finds, steel Design of Connecting Beam is that the hysteresis loop of shear yielding is very full, and ductility and energy dissipation capacity are significantly better than the concrete connecting-beam of traditional reinforcing bar.General steel Design of Connecting Beam is play power consumption effect under rarely occurred earthquake, but due to the demand of architectural design, will propose arch surrender power consumption effect under requiring frequently occurred earthquake.
A lot of scholar have developed a lot of removable power consumption coupling beam at present, and the feature of these coupling beams is will replace with one section of energy dissipating beam section in the middle part of concrete connecting-beam mostly.The weak point of such way is that be merely able to meet coupling beam surrenders the effect playing additional damping ratio under frequently occurred earthquake, the coupling effect that coupling beam connects two panels wall limb can not be played after power consumption surrender, and power consumption effect can not be played further under rarely occurred earthquake.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of removable pair of rank surrender power consumption steel coupling beam being applied to Coupled Shear Wall structure, have and can play the function that power consumption provides additional damping ratio under frequently occurred earthquake, also can play the coupling effect as coupling beam, and the power consumption effect more strengthened can be played under rarely occurred earthquake.In addition, this is applied to removable pair of rank surrender power consumption steel coupling beam of Coupled Shear Wall structure, can change equally, promote the rapid repair ability after building macroseism when shake is repaired afterwards.
In order to achieve the above object, the present invention adopts following technical scheme:
One,
Be applied to two rank surrender power consumption steel coupling beams for Coupled Shear Wall structure, it is characterized in that,
Comprise the shear yielding plate-girder (2) of generation first rank shear yielding,
The bending surrender i beam (1) of surrender is bent with generation second-order,
With the beam-ends end plate (3) being connected shear yielding plate-girder (2) and bending surrender i beam (1), it is inner that described shear yielding plate-girder (2) is enclosed within described bending surrender i beam (1), and both adopt butt weld to be welded on described beam-ends end plate (3);
With the high-strength bolt (6) of beam section (7) being connected described beam-ends end plate (3) and Nodes;
Described shear yielding plate-girder (2) comprises the elastic region (22) of the approximate rigidity at two ends and plasticity shear yielding power consumption district (21) at middle part;
The elastic region (22) of described approximate rigidity adopts high yield strength steel to make, for providing the function of the first rank surrender rigidity;
Circular arc chamfering weakening is carried out in short transverse in the middle part of described plasticity shear yielding power consumption district (21);
Described bending surrender i beam (1) comprises the edge of a wing (11) of end dog bone type process and two web (12),
In addition also comprise the two pieces of fill plates (4) be clipped between plasticity shear yielding power consumption district (21) and two web (12), and prevent the vertical stiffening rib (5) of unstability outside two web (12) face.
Two,
There is the shear yielding on the first rank plastic yielding power consumption district (21) in described shear yielding plate-girder (2).Further, described shear yielding plate-girder (2) realizes the first rank shear yielding function by following technical construction.
Described shear yielding plate-girder (2) comprises the elastic region (22) of the approximate rigidity at two ends and plasticity shear yielding power consumption district (21) at middle part.
Described plastic yielding power consumption district (21) height is highly identical with the elastic region (22) of approximate rigidity, and adopts butt weld to connect.
The thickness of described plastic yielding power consumption district (21) is generally less than or equals the thickness of the elastic region (22) of approximate rigidity.
The steel yield point that the steel that described plastic yielding power consumption district (21) adopts adopt than the elastic region (22) of approximate rigidity is low, and uses Low Yield Point Steel to make.
Similar " work " font put upside down of shape of described plastic yielding power consumption district (21), does circular arc chamfering weakening by middle part and provides different bearing capacities, make plasticity shear strain concentrate on simultaneously and weaken position generation.
Three,
There is the bending surrender of second-order beam-ends in described bending surrender i beam (1).Further, described bending surrender i beam (1) realizes the bending surrender function of second-order beam-ends by following technical construction.
Described bending surrender i beam (1) comprises the edge of a wing (11) of end dog bone type process and two web (12).
The edge of a wing (11) of described end dog bone type process adopts the butt weld of dog bone type process protection and beam-ends end plate (3) junction.
Described bending surrender i beam (1) adopts the steel of high yield strength to make, and makes it the bending surrender of beam-ends occurs by design.
Four,
Further, the removable pair of rank surrender power consumption steel coupling beam being applied to Coupled Shear Wall structure described in realizes removable function by following scheme.
Described shear yielding plate-girder (2) and described bending surrender i beam (1), by butt weld be welded on described beam-ends end plate (3) upper after and after beam section (7) welds described beam-ends end plate (3), connected by high-strength bolt (6) again, reach removable function with this.
The beam section (7) of described Nodes can directly in be embedded in wall limb inner, after also can being connected with shaped steel column, then column is embedded in wall limb inside.
The present invention compared with prior art, has the following advantages:
1) construction makes simple.The present invention take steel as raw material, shear yielding plate-girder (2) with bending surrender i beam (1) can respectively in factory process.Plastic yielding power consumption district (1) is connected by butt weld with the elastic region (22) of approximate rigidity, can on-the-spot or produce in factory installation.The form that plastic yielding power consumption district (1) is steel plate with the elastic region (22) of approximate rigidity, only needs simple cutting namely can complete, easy to process.
2) power consumption effect can be played under frequently occurred earthquake and also can play structure function.The present invention can ensure that shear yielding occurs coupling beam plastic yielding power consumption district (21) under frequently occurred earthquake Cyclic Loading, and makes distortion concentrate on plastic yielding power consumption district (21), strengthens energy dissipation capacity.Under frequently occurred earthquake, bending surrender i beam (1) keeps elasticity to maintain the coupling effect of coupling beam as structural element.
3) rarely occurred earthquake effect energy dissipation capacity is strong.Under rarely occurred earthquake effect, two rank surrenders occur simultaneously, and the shear yielding of plastic yielding power consumption district (21) and the bending surrender of bending surrender i beam (1) energy dissipation capability occur jointly than only having the much bigger of single dissipative member.
4) the present invention can change after severe earthquake action, realizes the quick reparation of coupling beam function, thus realizes the fast restoration capabilities of the rear function of building structure shake.
Accompanying drawing explanation
Fig. 1 is that the present invention is applied to the facade of the two rank surrender power consumption steel coupling beams of Coupled Shear Wall structure and schematic diagram is looked on a left side.
Fig. 2 is the top view of Fig. 1.
Fig. 3 applies schematic diagram of the present invention in Coupled Shear Wall structure.
Fig. 4 is significantly two rank yield point signal in load-displacement curve of the present invention.
Number in the figure explanation
1 bending surrender i beam
The edge of a wing of 11 dog bone type process
12 pairs of webs
2 shear yielding plate-girders
21 plasticity shear yielding power consumption districts
The elastic region of 22 approximate rigidity
3 beam-ends end plates
4 fill plates
5 put more energy into floor
6 high-strength bolts
7 Nodes overhanging beam sections
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this manual can understand other advantages of the present invention and effect easily.
Refer to Fig. 1 to Fig. 2.Notice, structure, ratio, size etc. that this manual institute accompanying drawings illustrates, content all only in order to coordinate manual to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this manual as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
One,
As shown in Figure 1 to Figure 2, the present invention is a kind of removable pair of rank surrender power consumption steel coupling beam being applied to Coupled Shear Wall structure, and be applied in high level or super-high building structure, its structural characterization is:
Comprise the shear yielding plate-girder (2) of generation first rank shear yielding,
The bending surrender i beam (1) of surrender is bent with generation second-order,
With the beam-ends end plate (3) being connected shear yielding plate-girder (2) and bending surrender i beam (1),
With the high-strength bolt (6) being connected described beam-ends end plate (3) and beam section (7).
Described shear yielding plate-girder (2) comprises the elastic region (22) of the approximate rigidity at two ends and plasticity shear yielding power consumption district (21) at middle part.Circular arc chamfering weakening is carried out in short transverse in the middle part of described plasticity shear yielding power consumption district (21), entirety makes similar " work " font (as shown in Figure 1) put upside down, meets different surrender bearing capacity demands with this under the prerequisite preventing stress from concentrating;
Described bending surrender i beam (1) comprises the edge of a wing (11) of end dog bone type process and two web (12),
In addition the present invention also comprises the two pieces of fill plates (4) be clipped between plasticity shear yielding power consumption district (21) and two web (12), and prevents the vertical stiffening rib (5) of unstability outside two web (12) face.
The cross-sectional shape of the elastic region (22) of described approximate rigidity is rectangle, and highly gradient, lower the closer to middle height, when avoiding shear strain occurs with this and the edge of a wing (11) of described bending surrender i beam (1) is collided.
Described pair of web (12) is for stepping up described shear yielding plate-girder (2), because described plastic yielding power consumption district (21) thickness is less than the elastic region (22) of described approximate rigidity, add two pieces of fill plates (4) to make two web (12) clamping plastic yielding power consumption district (21), prevent the outer unstability of its generating plane.
To sum up, the present invention should be applied to removable pair of rank surrender power consumption steel coupling beam of Coupled Shear Wall structure, comprises the shear yielding plate-girder of generation first rank shear yielding, and the bending surrender i beam that second-order bends surrender occurs.Shear yielding plate-girder mainly comprises two parts, and one is the elastic region that two ends are similar to rigidity, makes with the steel of high yield strength; Two is plasticity shear yielding power consumption districts, middle part, makes with the steel of low-yield.Bending surrender i beam comprises the edge of a wing, two web, all makes with the steel of high yield strength.It is inner that shear yielding plate-girder is enclosed within bending surrender i beam, each other without connection.Shear yielding plate-girder is surrendered i beam be welded on beam-ends end plate with bending.Through above-mentioned rational design, can ensure that the first rank surrender occurs this pair of rank surrender power consumption coupling beam under frequently occurred earthquake effect, namely shear the middle part plasticity shear yielding power consumption district surrender of removing web beam; Second-order surrender occurs under rarely occurred earthquake, and namely the beam-ends of bending surrender i beam bends surrender.This pair of rank surrender power consumption coupling beam is connected with the interior i beam being inserted in wall limb inside by the high-strength bolt of end plate, can change after macroseism.This pair of rank surrender power consumption coupling beam simple structure, under frequently occurred earthquake, the first rank shear yielding provides additional damping ratio, and the coupling effect providing connection wall limb do not surrendered by bending surrender i beam; Under rarely occurred earthquake, there is second-order surrender, play the effect of shear wall structure first anti-vibration defense lines.This pair of rank surrender power consumption steel coupling beam meets the multiple demand of structure under frequently occurred earthquake and rarely occurred earthquake, and replaceable, and energy dissipation capacity is strong, has broad application prospects.
Two,
Concrete installation procedure of processing is:
First processing and fabricating shear yielding plate-girder (2), then adopts butt weld to be welded on beam-ends end plate at plate-girder two ends.
Stiffening rib (5) is welded on two web (12).
Then the two web (12) of welding is on end plate (3), adopts butt welding or fillet weld.
Then fillet weld is adopted upper bottom flange (11) to be welded with two web (12), and and end plate (3) welding.
Final end plate perforate adopts high-strength bolt (6) to dock with straight cutting beam section.
So far the removable pair of rank surrender power consumption steel coupling beam being applied to Coupled Shear Wall structure machines.
Under frequently occurred earthquake effect, the elastic region (22) of approximate rigidity due to rigidity very die elastic deformation less, and its shearing relative deformation of plastic yielding power consumption district (21) is larger, the plasticity shear yielding on the first rank occurs, but now bending surrender i beam (2) still keeps elastic stage to provide coupling effect.The elastic region of described approximate rigidity, specifically can be defined as: its shear strain rigidity is greater than more than 3 times of plastic zone shear strain rigidity.
Under rarely occurred earthquake, plastic yielding power consumption district (21) and the bending beam-ends surrendering i beam (2) are all surrendered, and as second-order surrender, energy dissipation capacity obviously becomes large, under making structure avoid large shake, serious collapse occur.
After macroseism, so the high-strength bolt at coupling beam end plate place can be unloaded if coupling beam occurs to destroy, new steel coupling beam is installed, the function of structure is recovered as early as possible, reduce the economic loss that earthquake causes, recover the using function of building structure.

Claims (7)

1. be applied to two rank surrender power consumption steel coupling beams for Coupled Shear Wall structure, it is characterized in that,
Comprise the shear yielding plate-girder (2) of generation first rank shear yielding,
The bending surrender i beam (1) of surrender is bent with generation second-order,
With the beam-ends end plate (3) being connected shear yielding plate-girder (2) and bending surrender i beam (1), it is inner that described shear yielding plate-girder (2) is enclosed within described bending surrender i beam (1), and both adopt butt weld to be welded on described beam-ends end plate (3);
With the high-strength bolt (6) of beam section (7) being connected described beam-ends end plate (3) and Nodes;
Described shear yielding plate-girder (2) comprises the elastic region (22) of the approximate rigidity at two ends and plasticity shear yielding power consumption district (21) at middle part;
The elastic region (22) of described approximate rigidity adopts high yield strength steel to make, for providing the function of the first rank surrender rigidity;
Circular arc chamfering weakening is carried out in short transverse in the middle part of described plasticity shear yielding power consumption district (21);
Described bending surrender i beam (1) comprises the edge of a wing (11) of end dog bone type process and two web (12),
In addition the two pieces of fill plates (4) be clipped between plasticity shear yielding power consumption district (21) and two web (12) are also comprised, and
Prevent the vertical stiffening rib (5) of unstability outside two web (12) face.
2. the two rank surrender power consumption steel coupling beams being applied to Coupled Shear Wall structure according to claim 1, it is characterized in that, the thickness of described plastic yielding power consumption district (21) is greater than or equal to the thickness of described approximate rigid elastic district (22).
3. the two rank surrender power consumption steel coupling beams being applied to Coupled Shear Wall structure according to claim 1, it is characterized in that, elastic region (22) and the described plastic yielding of described approximate rigidity district (21) of consuming energy is connected by butt weld, the rigidity of the elastic region (22) of approximate rigidity is gradual change, lower the closer to middle height, the consume energy height in district (21) of the elastic region (22) being similar to rigidity in butt weld junction and plastic yielding is identical.
4. the two rank surrender power consumption steel coupling beams being applied to Coupled Shear Wall structure according to claim 1, it is characterized in that, the edge of a wing (11) and two web (12) of the end dog bone type process that described bending surrender i beam (1) comprises all adopt high yield strength steel to make.
5. the two rank surrender power consumption steel coupling beams being applied to Coupled Shear Wall structure according to claim 1, it is characterized in that, after described shear yielding plate-girder (2) is connected with described beam-ends end plate (3) with described bending surrender i beam (1), then be connected with beam section (7) by described high-strength bolt (6).
6. the two rank surrender power consumption steel coupling beams being applied to Coupled Shear Wall structure according to claim 1, it is characterized in that, two web (12) clamps described shear yielding plate-girder (2) in interior thickness weakening place of described shear yielding plate-girder (2) by two pieces of fill plates (4) and prevents unstability outside its face.
7. the two rank surrender power consumption steel coupling beams being applied to Coupled Shear Wall structure according to claim 1, is characterized in that, arrange multiple tracks to put more energy into floor (5) in the longitudinal direction of described pair of web (12).
CN201510152998.1A 2015-04-02 2015-04-02 It is applied to double rank surrender power consumption steel coupling beam of Coupled Shear Wall structure Active CN104805958B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971146A (en) * 2016-07-01 2016-09-28 上海赛弗工程减震技术有限公司 Novel energy dissipation damper
CN106285147A (en) * 2016-10-17 2017-01-04 上海蓝科建筑减震科技股份有限公司 Retrofit application is in removable pair of rank surrender power consumption steel coupling beam of Coupled Shear Wall structure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4196280B2 (en) * 2003-10-08 2008-12-17 清水建設株式会社 Steel beam damper
JP5124146B2 (en) * 2007-01-19 2013-01-23 株式会社竹中工務店 Seismic control building
CN201924479U (en) * 2010-12-02 2011-08-10 西安建筑科技大学 Shear wall structure for low yield point steel coupling beam
KR101229468B1 (en) * 2010-12-28 2013-02-04 재단법인 포항산업과학연구원 Coupling beam
CN202483027U (en) * 2012-03-23 2012-10-10 重庆大学 Coupled shear wall with end plate bolts and steel coupling beams
CN102644358A (en) * 2012-04-24 2012-08-22 清华大学 Steel coupling beam capable of being replaced after strong earthquake

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971146A (en) * 2016-07-01 2016-09-28 上海赛弗工程减震技术有限公司 Novel energy dissipation damper
CN106285147A (en) * 2016-10-17 2017-01-04 上海蓝科建筑减震科技股份有限公司 Retrofit application is in removable pair of rank surrender power consumption steel coupling beam of Coupled Shear Wall structure

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