CN103938748B - A kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point - Google Patents
A kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point Download PDFInfo
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Abstract
A kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point.The energy consumption inner core plates surrender power consumption of homogenous material is only relied on for existing anti-buckling support, its energy consumption effect, in unwarrantable problem under even megaseisms is shaken greatly in super expection, proposes energy consumption inner core plates by the low yield point steel plate novel energy-consumption core made overlapping with high yield strength steel plate.This component comprises low yield point steel plate, the high yield strength steel plate of in-line energy consumption inner core plates, outer constraint steel pipe, end junction plate, the cement mortar of in-line energy consumption inner core plates; The common anti-buckling support comparing single yield point can not adapt to varying level geological process, and the anti-buckling support possessing two yield points can play power consumption effect under different earthquake exposure level.This support in little shake, middle shake, shake under even megaseisms and can keep good service behaviour greatly, can be applicable to the design requirement of present many performance standards and target, has good practical value.
Description
Technical field
The invention belongs to buckling-restrained energy-dissipation component technology field, relate to a kind of supporting member of novel engineering structures energy dissipation, particularly relate to a kind of curvature-prevention support component with two yield point.
Background technology
In recent years, in world wide, earthquake frequently occurs, and occurs the megaseisms that exceeds beyond fortification, and it represents extreme seismic load amplitude Characteristics surmounting large shake.In order to realize the safety of structure under megaseisms effect, establish the seismic measures in theory under the large earthquake situations condition of the super expection of introducing in tradition, significant.Anti-buckling support is is successfully researched and developed by Japanese scholars the earliest, and has carried out tensile compression test to it; The U.S., after the earthquake of northern ridge, starts to be studied and test anti-buckling support system.Buckling-restrained energy-dissipation is laterally formed primarily of core cell, constraint element and sliding mechanism unit, anti-side rigidity and the bearing capacity of frame construction can be improved, and have that energy consume mechanism is clear and definite, energy-dissipating and shock-absorbing Be very effective, stable performance, construction install convenience, be easy to the features such as standardized production, apply very extensive in building structure.Outer constraint steel pipe and packing material only retrain energy consumption inner core plates compressive buckling, and make energy consumption inner core plates all can enter surrender in tension with by pressure, thus the Hysteresis Behavior of anti-buckling support is excellent.There is a proposition for the curvature-prevention support component of two yield point, perfect to a certain extent design based on performance theoretical frame.
When buckling-restrained energy-dissipation is a kind of pressurized, generation is surrendered and the component of flexing is not occurred, and its contexture can from horizontal and vertical analysis.Lateral part is primarily of energy consumption inner core board member, outer confining part (steel pipe, concrete etc.) and form without three parts such as binding materials; Longitudinally form and be divided into constraint surrender section, constraint non-compliant section, without constraint non-compliant section, without cohering expandable material and buckling-restrained mechanism.Traditional curvature-prevention support component has following characteristics, the energy consumption inner core plates be connected with structural element is made up of single material, load is born by the energy consumption inner core plates of homogenous material completely, outer sleeve and packing material only retrain inner core plates compressive buckling to prevent inner core plates buckle in compression, make inner core plates all can enter surrender in tension with by pressure.Namely only consider that energy consumption inner core plates is the power consumption core of a homogenous material.Traditional energy dissipation brace has enough rigidity under small earthquakes, and under large shake, energy-dissipating property is good.Its power consumption under large shake is usually with total cross-section surrender or be fractured into key character, and the elastic-plastic deformation performance under large shake often can not meet expection and shake greatly power consumption under even megaseisms and safety requirements.Given this, transformed first there being traditional energy dissipation brace, design a kind of novel curvature-prevention support component can also after common energy consumption inner core plates surrender with certain rigidity and power consumption deposit, ensure the supporting member also under small earthquakes possesses enough rigidity and can exceed the large shake of expection or even megaseisms with enough energy dissipation capacities.
Summary of the invention
The present invention, on existing anti-buckling brace foundation, proposes a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point.The energy consumption inner core plates surrender power consumption of homogenous material is only relied on for existing anti-buckling support, its energy consumption effect, in unwarrantable problem under even megaseisms is shaken greatly in super expection, proposes energy consumption inner core plates by the low yield point steel plate novel energy-consumption core made overlapping with high yield strength steel plate.The mechanics feature of low-yield is easy surrender, after entering moulding state, have good hysteretic characteristic, and can absorb a large amount of energy in elastoplasticity hysteresis deformation process, and the remainder internal force of structure is obviously reduced, thus operator guards.High yield strength yield of steel to be compared height with Low Yield Point Steel, can keep elasticity when Low Yield Point Steel is surrendered.The present invention has the wider and more significant advantage of hysteretic energy of range of application.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point, and this component comprises low yield point steel plate, the high yield strength steel plate of in-line energy consumption inner core plates, outer constraint steel pipe, end junction plate, the cement mortar of in-line energy consumption inner core plates; Outer constraint steel pipe surrounds the low yield point steel plate of in-line energy consumption inner core plates, the high yield strength steel plate of in-line energy consumption inner core plates from outside, end junction plate is fixed in outer constraint steel pipe one end, the other end of outer constraint steel pipe is freely without connecting and leaving gap to pour into cement mortar, and described outer constraint steel pipe is square-section; Described cement mortar is filled in the gap place of outer constraint steel pipe, a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point of common formation.
Overall energy consumption inner core plates is made by low yield point steel plate is overlapping with high yield strength steel plate, gap filling between two steel plates has non-cohesive material, to provide the high yield strength steel plate of the low yield point steel plate of in-line energy consumption inner core plates and in-line energy consumption inner core plates when axial deformation due to produced the respectively lateral deformation space of poisson effect, making to be supported on tension has similar mechanical property as far as possible to pressurized process; The low yield point steel plate of in-line energy consumption inner core plates utilizes bolt to be connected with the two ends of the high yield strength steel plate of in-line energy consumption inner core plates or welds and forms overall energy consumption inner core plates.
Compared with prior art, the present invention has following beneficial effect.
Energy dissipation capacity of the present invention compares traditional anti-buckling support by significantly improving; The steel wide material sources that the present invention adopts, complete in specifications, it is convenient to buy; The present invention can the energy dissipation and damping control of extensive use and building; Open up traditional energy dissipation brace scope of application, increase the hysteretic energy ability of energy dissipation brace; The common anti-buckling support comparing single yield point can not adapt to varying level geological process, and the anti-buckling support possessing two yield points can play power consumption effect under different earthquake exposure level.This support in little shake, middle shake, shake under even megaseisms and can keep good service behaviour greatly, can be applicable to the design requirement of present many performance standards and target, has good practical value.
Accompanying drawing explanation
Fig. 1 a is a kind of yi word pattern energy consumption inner core curvature-prevention support component front view with two yield point.
Fig. 1 b is a kind of yi word pattern energy consumption inner core curvature-prevention support component lateral view with two yield point.
Fig. 2 is the sectional drawing of in-line energy consumption inner core plates.
In figure: 1, the low yield point steel plate of in-line energy consumption inner core plates, 2, the high yield strength steel plate of in-line energy consumption inner core plates, 3, outer constraint steel pipe, 4, end junction plate, 5, cement mortar.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1-2, have a yi word pattern energy consumption inner core curvature-prevention support component for two yield point, this component comprises low yield point steel plate 1, the high yield strength steel plate 2 of in-line energy consumption inner core plates, outer constraint steel pipe 3, end junction plate 4, the cement mortar 5 of in-line energy consumption inner core plates; The low yield point steel plate 1 of described in-line energy consumption inner core plates superposes mutually with the high yield strength steel plate 2 of in-line energy consumption inner core plates; Outer constraint steel pipe 3 surrounds the low yield point steel plate 1 of in-line energy consumption inner core plates, the high yield strength steel plate 2 of in-line energy consumption inner core plates from outside, end junction plate 4 is fixed in outer constraint steel pipe 3 one end, and the other end of outer constraint steel pipe 3 is freely without connecting and leaving gap to pour into cement mortar 5; The low yield point steel plate 1 of in-line energy consumption inner core plates utilizes bolt to be connected with the two ends place of the high yield strength steel plate 2 of in-line energy consumption inner core plates or welds and forms overall energy consumption inner core plates, and non-cohesive material is filled between two plate interludes, described outer constraint steel pipe 3 is square-section; Described cement mortar 5 is filled in the gap place of outer constraint steel pipe 3, a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point of common formation.
Overall energy consumption inner core plates is made by low yield point steel plate is overlapping with high yield strength steel plate, gap filling between two steel plates has non-cohesive material, with the high yield strength steel plate 2 of low yield point steel plate 1 and in-line energy consumption inner core plates that in-line energy consumption inner core plates is provided when axial deformation due to the lateral deformation space that poisson effect is produced respectively, making to be supported on tension has similar mechanical property as far as possible to pressurized process; The low yield point steel plate 1 of in-line energy consumption inner core plates utilizes bolt to be connected with the two ends of the high yield strength steel plate 2 of in-line energy consumption inner core plates or welds and forms overall energy consumption inner core plates, between two plate interludes, fill non-cohesive material, the two ends of overall inner core plates are all welded in end junction plate 4.
When there is (namely when suffering the frequently occurred earthquake lower than this area seismic fortification intensity) in little shake, and when (namely when suffering the earthquake effect being equivalent to this area seismic fortification intensity) occurs in middle shake, due to the low yield point steel plate 1 of in-line energy consumption inner core plates, the high yield strength steel plate 2 of in-line energy consumption inner core plates is made by low yield point steel plate is overlapping with high yield strength steel plate respectively, and the gap filling between two steel plates has non-cohesive material, so due to earthquake intensity less, can by the low yield point steel plate 1 of in-line energy consumption inner core plates, the elastic deformation earthquake energy of the high yield strength steel plate 2 of in-line energy consumption inner core plates, now supporting member ensures to be in elastic stage, when shaking greatly generation (namely when affected by the rarely occurred earthquake estimated higher than this area seismic fortification intensity), first Low Yield Point Steel enters yielding stage hysteretic energy, high yield strength steel surrender subsequently, enters the hysteretic energy stage, thus consumes the energy of Seismic input structure better.The common anti-buckling support of single yield point can not adapt to varying level geological process, and the anti-buckling support possessing two yield points can play power consumption effect under different earthquake exposure level.
Reserved gap filling cement mortar is passed through to prevent energy consumption inner core plates unstability between the low yield point steel plate 1 of described outer constraint steel pipe 3 and in-line energy consumption inner core plates, the high yield strength steel plate 2 of in-line energy consumption inner core plates.
The described free end of outer constraint steel pipe 3 and the gap of end junction plate 4 remain on and support 1/10th of total length, and described gap place is welded with wedge-shaped steel plate, ensure that energy consumption inner core plates cripling can not occur.
When described end junction plate 4 is physically connected to component, put more energy into floor or angle steel can be welded to increase linkage section intensity, ensure linkage section two-way stable.
Claims (3)
1. there is a yi word pattern energy consumption inner core curvature-prevention support component for two yield point, it is characterized in that: this component comprises low yield point steel plate (1), the high yield strength steel plate (2) of in-line energy consumption inner core plates, outer constraint steel pipe (3), end junction plate (4), the cement mortar (5) of in-line energy consumption inner core plates; The low yield point steel plate (1) of described in-line energy consumption inner core plates superposes mutually with the high yield strength steel plate (2) of in-line energy consumption inner core plates; Outer constraint steel pipe (3) surrounds the low yield point steel plate (1) of in-line energy consumption inner core plates, the high yield strength steel plate (2) of in-line energy consumption inner core plates from outside, end junction plate (4) is fixed in outer constraint steel pipe (3) one end, and the other end of outer constraint steel pipe (3) is freely without connecting and leaving gap to pour into cement mortar (5); The low yield point steel plate (1) of in-line energy consumption inner core plates utilizes bolt to be connected with the two ends place of the high yield strength steel plate (2) of in-line energy consumption inner core plates or welds and forms overall energy consumption inner core plates, and non-cohesive material is filled between two steel plate interludes, described outer constraint steel pipe (3) is square-section; Described cement mortar (5) is filled in the gap place of outer constraint steel pipe (3), a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point of common formation;
Overall energy consumption inner core plates is made by low yield point steel plate is overlapping with high yield strength steel plate, gap filling between two steel plates has non-cohesive material, to provide the high yield strength steel plate (2) of the low yield point steel plate of in-line energy consumption inner core plates (1) and in-line energy consumption inner core plates when axial deformation due to produced the respectively lateral deformation space of poisson effect, making to be supported on tension has similar mechanical property as far as possible to pressurized process; Between two steel plate interludes, fill non-cohesive material, the two ends of overall inner core plates are all welded in end junction plate (4); When little shake occurs, and when middle shake occurs, because the low yield point steel plate (1) of in-line energy consumption inner core plates, the high yield strength steel plate (2) of in-line energy consumption inner core plates are made by low yield point steel plate is overlapping with high yield strength steel plate respectively, and the gap filling between two steel plates has non-cohesive material, so due to earthquake intensity less, by the elastic deformation earthquake energy of the low yield point steel plate (1) of in-line energy consumption inner core plates, the high yield strength steel plate (2) of in-line energy consumption inner core plates, now supporting member ensures to be in elastic stage; When large shake occurs, first the low yield point steel plate (1) of in-line energy consumption inner core plates enters yielding stage hysteretic energy, high yield strength steel plate (2) surrender of in-line energy consumption inner core plates, enters the hysteretic energy stage, thus consumes the energy of Seismic input structure subsequently; The common anti-buckling support of single yield point can not adapt to varying level geological process, and the anti-buckling support possessing two yield points can play power consumption effect under different earthquake exposure level.
2. a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point according to claim 1, it is characterized in that: the described free end of outer constraint steel pipe (3) and the gap of end junction plate (4) remain on and support 1/10th of total length, described gap place is welded with wedge-shaped steel plate, ensures that energy consumption inner core plates cripling can not occur.
3. a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point according to claim 1, it is characterized in that: when described end junction plate (4) is physically connected to component, welding puts more energy into floor or angle steel to increase linkage section intensity, ensures linkage section two-way stable.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104594521A (en) * | 2015-01-30 | 2015-05-06 | 中冶天工上海十三冶建设有限公司 | Buckling-restrained steel support capable of providing additional damping |
| CN104612278B (en) * | 2015-02-05 | 2017-02-01 | 河北华研卓筑加固工程集团有限公司 | Three core plate in parallel energy dissipation type buckling-proof support |
| CN104929267A (en) * | 2015-06-25 | 2015-09-23 | 上海赛弗工程减震技术有限公司 | Progressive yield type buckling prevention energy dissipating brace |
| CN107460966A (en) * | 2017-08-09 | 2017-12-12 | 同济大学 | A kind of low more yield point buckling restrained braces of residual deformation of novel steel tube fill concrete type |
| CN108442797A (en) * | 2018-05-22 | 2018-08-24 | 河南省金华夏建工集团股份有限公司 | A kind of anti-buckling support of all steel of more kernels |
| CN114016791B (en) * | 2021-07-28 | 2023-04-14 | 北京市建筑设计研究院有限公司 | Metal friction double-yield-point composite energy dissipation support |
| CN113958001B (en) * | 2021-12-22 | 2022-03-04 | 北京市建筑设计研究院有限公司 | Parallel multiple sleeve type double-yield-point buckling restrained brace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1963061A (en) * | 2006-12-08 | 2007-05-16 | 北京工业大学 | Buckling-restrained brace of combined hot-rolled angle steel |
| CN100560884C (en) * | 2007-07-10 | 2009-11-18 | 中国建筑科学研究院 | The buckling-restrained support of a kind of band diaphragm bilayer sleeve in-line |
| CN101463632A (en) * | 2008-09-16 | 2009-06-24 | 同济大学 | Once variable cross-section cross buckling-restrained bracing member |
| CN101440639B (en) * | 2008-12-10 | 2010-11-10 | 上海维固工程实业有限公司 | Flexion energy dissipation preventing support |
| CN102619279A (en) * | 2011-01-28 | 2012-08-01 | 上海丹木钢结构技术有限公司 | All-steel double-tube buckling restrained brace |
| CN102877568B (en) * | 2012-09-28 | 2014-12-24 | 清华大学 | Double-inner-core buckling-preventive support structure |
| CN202831286U (en) * | 2012-09-28 | 2013-03-27 | 清华大学 | Dual-core buckling-proof supporting structure |
| CN203238803U (en) * | 2013-03-12 | 2013-10-16 | 同济大学 | Novel mixed energy-dissipation shock-absorption support |
| CN203145229U (en) * | 2013-03-19 | 2013-08-21 | 上海沃耳沃建筑材料有限公司 | Buckling restrained brace containing viscous-elastic materials |
| CN203440942U (en) * | 2013-07-30 | 2014-02-19 | 武汉理工大学 | Parallel-type graded yielding buckling-restrained energy dissipation support |
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