CN103938748A - Linear energy-consumption inner core buckling-restrained supporting component with double yield points - Google Patents
Linear energy-consumption inner core buckling-restrained supporting component with double yield points Download PDFInfo
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Abstract
The invention discloses a linear energy-consumption inner core buckling-restrained supporting component with double yield points. According to the problem that an existing buckling-restrained support only depends on an energy-consumption inner core plate made of a single material for yield energy consumption, and therefore the energy-consumption effect can not be guaranteed in the face of a major earthquake exceeding the expectation and even a great earthquake, a novel energy-consumption core, which is provided with an energy-consumption inner core plate manufactured by a low-yield-point steel plate and a high-yield-point steel plate in an overlapping mode, is provided. The component comprises the low-yield-point steel plate of the linear cross energy-consumption inner core plate, the high-yield-point steel plate of the energy-consumption inner core plate, an outer restraint steel pipe, an end connecting plate and cement mortar. Compared with the common buckling-restrained support which is provided with a single yield point and can not be adaptive to different magnitudes of earthquakes, the buckling-restrained supporting component provided with the two yield points can play a role in energy consumption under different magnitudes of earthquakes. The supporting component can keep good working performance under a small earthquake, a middle earthquake, the major earthquake and even the great earthquake, is suitable for the design requirements of multiple performance levels and multiple targets and has high 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, relate in particular to a kind of curvature-prevention support component with two yield points.
Background technology
In recent years, in world wide, earthquake frequently occurs, and occurs exceeding the level megaseisms in addition of setting up defences, and it represents to surmount in amplitude Characteristics the extreme seismic load of large shake.For the safety of implementation structure under megaseisms effect, establish in theory and introduce the seismic measures under the large earthquake situations condition of super expection in tradition, significant.Anti-buckling support is is successfully researched and developed by Japanese scholars the earliest, and it has been carried out to tension and compression test; After U.S. Bei ridge earthquake, start anti-buckling support system to be studied and to test.Buckling-restrained energy-dissipation is laterally mainly by core cell, constraint element and sliding mechanism cell formation, can improve anti-side rigidity and the bearing capacity of frame construction, and have that energy consume mechanism is clear and definite, energy-dissipating and shock-absorbing effect significantly, stable performance, construction install convenience, be easy to the features such as standardized production, in building structure, application is very extensive.Outer constraint steel pipe and packing material only retrain energy consumption inner core plates pressurized flexing, make energy consumption inner core plates in tension and depressed all can enter surrender, thereby the Hysteresis Behavior of anti-buckling support are good.There is a proposition for the curvature-prevention support component of two yield points, the perfect to a certain extent Aseismic Design Theory framework based on performance.
When buckling-restrained energy-dissipation is a kind of pressurized, surrender occurs and the member of flexing does not occur, its contexture can be from horizontal and vertical analysis.Lateral part mainly forms by energy consumption inner core board member, outer confining part (steel pipe, concrete etc.) with without three parts such as binding materials; Longitudinally form and be divided into constraint surrender section, retrain non-surrender section, cohere expandable material and buckling-restrained mechanism without the non-surrender of constraint section, nothing.Traditional curvature-prevention support component has following characteristics, the energy consumption inner core plates being 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 pressurized flexing to prevent inner core plates pressurized unstability, make inner core plates in tension and depressed all can enter surrender.Only consider that energy consumption inner core plates is the power consumption core of a homogenous material.Traditional power consumption is supported under small earthquakes has enough rigidity, and under large shake, energy-dissipating property is good.Key character is surrendered or be fractured into its power consumption under large shake with total cross-section conventionally, and the elastic-plastic deformation performance under large shake often can not meet expection and shake greatly power consumption and the safety requirements under even megaseisms.Given this, transformed first there being traditional power consumption to support, design a kind of novel curvature-prevention support component can also with certain rigidity and power consumption deposit after common energy consumption inner core plates surrender, ensure to possess enough rigidity and can exceed the supporting member also under the large shake of expection or even megaseisms with enough energy dissipation capacities in small earthquakes.
Summary of the invention
The present invention, on existing anti-buckling brace foundation, has proposed a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield points.Only rely on the energy consumption inner core plates surrender power consumption of homogenous material for existing anti-buckling support, its energy consumption effect is shaking greatly unwarrantable problem under even megaseisms in the face of super expection, proposes energy consumption inner core plates by low yield point steel plate and the overlapping novel energy-consumption core of making of high yield strength steel plate.The mechanics feature of low-yield is easy surrender, has good hysteretic characteristic entering, and can absorb a large amount of energy after moulding state in elastoplasticity hysteresis deformation process, and the remainder internal force of structure is obviously reduced, thus protection structure.High yield strength yield of steel, with the Low Yield Point Steel height of comparing, can keep elasticity in the time that Low Yield Point Steel is surrendered.The present invention has range of application more extensively and the more significant advantage of hysteretic energy.
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 points, and this member comprises 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, outer constraint steel pipe, end junction plate, cement mortar; 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, jointly forms a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield points.
Entirety energy consumption inner core plates is by low yield point steel plate and high yield strength steel plate is overlapping makes, gap filling between two steel plates has non-cohesive material, with the lateral deformation space that provides the low yield point steel plate of in-line energy consumption inner core plates and the high yield strength steel plate of in-line energy consumption inner core plates to be produced respectively due to poisson effect when the axial deformation, make to be supported on tension and in pressurized process, have as far as possible similar mechanical property; 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 is compared 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 extensive use and the energy dissipation and damping control of building; The scope of application is supported in the power consumption of developing tradition, increases the hysteretic energy ability that power consumption is supported; The common anti-buckling support of comparing single yield point can not adapt to varying level geological process, and the anti-buckling support that possesses two yield points can be brought into play power consumption effect under different earthquake exposure level.This support can be in little shake, middle shake, shake under even megaseisms and can keep good service behaviour greatly, is applicable to the design requirement of present many performance standards and target, has good practical value.
Brief description of the drawings
Fig. 1 a is a kind of yi word pattern energy consumption inner core curvature-prevention support component front view with two yield points.
Fig. 1 b is a kind of yi word pattern energy consumption inner core curvature-prevention support component lateral view with two yield points.
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 points, this member comprises 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, outer constraint steel pipe 3, end junction plate 4, cement mortar 5; 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 between two plate interludes, fill non-cohesive material, 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, jointly forms a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield points.
Entirety energy consumption inner core plates is by low yield point steel plate and high yield strength steel plate is overlapping makes, gap filling between two steel plates has non-cohesive material, with the lateral deformation space that provides the low yield point steel plate 1 of in-line energy consumption inner core plates and the high yield strength steel plate 2 of in-line energy consumption inner core plates to be produced respectively due to poisson effect when the axial deformation, make to be supported on tension and in pressurized process, have as far as possible similar mechanical property; 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.
In the time there is (when the frequently occurred earthquake suffering lower than this area seismic fortification intensity) in little shake, and in the time there is (when being equivalent to the earthquake effect of this area seismic fortification intensity) 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 respectively by low yield point steel plate and high yield strength steel plate is overlapping makes, and the gap filling between two steel plates has non-cohesive material, so because earthquake intensity is less, can pass through 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 in elastic stage, there is (when affected by the rarely occurred earthquake of estimating higher than this area seismic fortification intensity) during in large shake, first Low Yield Point Steel enters surrender stage hysteretic energy, high yield strength steel surrender subsequently, enters the hysteretic energy stage, thereby consumes better the energy of earthquake input structure.The common anti-buckling support of single yield point can not adapt to varying level geological process, and the anti-buckling support that possesses two yield points can be brought into play power consumption effect under different earthquake exposure level.
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 by reserved gap filling cement mortar to prevent energy consumption inner core plates unstability.
The gap of the free end of described outer constraint steel pipe 3 and end junction plate 4 remains on supports 1/10th of total length, and described gap place is welded with wedge-shaped steel plate, ensures that cripling can not occur energy consumption inner core plates.
When described end junction plate 4 is physically connected to member, can welds put more energy into floor or angle steel and increase linkage section intensity, ensure linkage section two-way stable.
Claims (5)
1. a yi word pattern energy consumption inner core curvature-prevention support component with two yield points, is characterized in that: this member 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 between two plate interludes, fill non-cohesive material, 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), jointly forms a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield points;
Entirety energy consumption inner core plates is by low yield point steel plate and high yield strength steel plate is overlapping makes, gap filling between two steel plates has non-cohesive material, with the lateral deformation space that provides the low yield point steel plate (1) of in-line energy consumption inner core plates and the high yield strength steel plate (2) of in-line energy consumption inner core plates to be produced respectively due to poisson effect when the axial deformation, make to be supported on tension and in pressurized process, have as far as possible similar mechanical property; 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).
2. a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield points according to claim 1, it is characterized in that: in the time that little shake occurs, and in the time that middle shake occurs, 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 respectively by low yield point steel plate and high yield strength steel plate is overlapping makes, and the gap filling between two steel plates has non-cohesive material, so because earthquake intensity is less, can pass through 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 in elastic stage, in the time that large shake occurs, first Low Yield Point Steel enters surrender stage hysteretic energy, and high yield strength steel surrender subsequently, enters the hysteretic energy stage, thereby consume better the energy of earthquake input structure, the common anti-buckling support of single yield point can not adapt to varying level geological process, and the anti-buckling support that possesses two yield points can be brought into play power consumption effect under different earthquake exposure level.
3. a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield points according to claim 1, is characterized in that: 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 by reserved gap filling cement mortar to prevent energy consumption inner core plates unstability.
4. a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield points according to claim 1, it is characterized in that: the gap of the free end of described outer constraint steel pipe (3) and end junction plate (4) remains on supports 1/10th of total length, described gap place is welded with wedge-shaped steel plate, ensures that cripling can not occur energy consumption inner core plates.
5. a kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield points according to claim 1, it is characterized in that: when described end junction plate (4) is physically connected to member, can weld put more energy into floor or angle steel and increase linkage section intensity, ensure linkage section two-way stable.
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| CN201410129404.0A CN103938748B (en) | 2014-04-01 | 2014-04-01 | A kind of yi word pattern energy consumption inner core curvature-prevention support component with two yield point |
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Cited By (7)
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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 |
| CN104612278A (en) * | 2015-02-05 | 2015-05-13 | 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 |
| CN113958001A (en) * | 2021-12-22 | 2022-01-21 | 北京市建筑设计研究院有限公司 | Parallel multiple sleeve type double-yield-point buckling restrained brace |
| CN114016791A (en) * | 2021-07-28 | 2022-02-08 | 北京市建筑设计研究院有限公司 | Metal friction double-yield-point composite energy dissipation support |
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| 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 |
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| CN114016791A (en) * | 2021-07-28 | 2022-02-08 | 北京市建筑设计研究院有限公司 | Metal friction double-yield-point composite energy dissipation support |
| CN113958001A (en) * | 2021-12-22 | 2022-01-21 | 北京市建筑设计研究院有限公司 | Parallel multiple sleeve type double-yield-point buckling restrained brace |
| 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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