CN202990151U

CN202990151U - Sleeve-type self-resetting shape memory alloy coupling beam damper

Info

Publication number: CN202990151U
Application number: CN 201220527250
Authority: CN
Inventors: 毛晨曦; 王大磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-16
Filing date: 2012-10-16
Publication date: 2013-06-12
Anticipated expiration: 2022-10-16

Abstract

The utility model relates to a damper, in particular to a passive energy dissipation seismic mitigation device which is used for a reinforced concrete shear wall structure. The sleeve-type self-resetting shape memory alloy coupling beam damper comprises an outer sleeve, an inner sleeve and an austenite shape memory alloy wire, wherein the outer sleeve and the inner sleeve are respectively arranged at two ends to be connected, the austenite shape memory alloy wire is connected with the outer sleeve and the inner sleeve in the vertical direction, the outer sleeve and the inner sleeve are vertically and coaxially arranged, the inner sleeve is composed of an inner upper sleeve and an inner lower sleeve which are connected through a turnbuckle screw, and a hole which is used for installing the inner sleeve is formed in the side wall of the outer sleeve. The sleeve-type self-resetting shape memory alloy coupling beam damper has the advantages of being simple in structure, hard to damage, high in energy dissipation capacity, and good in shock absorption effect.

Description

A kind of socket type Self-resetting marmem coupling beam damper

Technical field

The utility model relates to a kind of damper, specifically is specifically related to a kind of passive energy-consumption shock-absorption device for reinforced concrete shear wall structure.

Background technology

Shear wall structure has larger integral rigidity, easily causes stress to gather under geological process, and brittle shear failure occurs.And if under rarely occurred earthquake wall limb failure at first, be unfavorable for the realization of shear wall structure system two road anti-vibration defense lines, can not guarantee to implement the principle of providing fortification against earthquakes of structure " no collapsing with strong earthquake ".For this reason, the Ductility Design of shear wall structure requires that under the rarely occurred earthquake effect, coupling beam prior to the surrender of wall limb, forms the plastic hinge power consumption by coupling beam, and change structure vibration frequency is simultaneously avoided predominant period of earthquake, weakens to a certain extent mesomerism and responds.

At present about the research that improves Seismic Property of Shear Wall Structures mostly based on the traditional structure Seismic Design Thought, namely the appropriate circulating plastic by coupling beam member itself is out of shape the seismic energy that dissipates.The concrete measure that improves the coupling beam deformation performance comprise change the coupling beam form of reinforcement, configure shaped steel in reinforced concrete coupling beams, the flat straight joint of boiling water or open perps, reinforced concrete coupling beams is replaced to steel coupling beam etc. at coupling beam two ends in coupling beam.Yet the accumulation of the plastic strain of coupling beam own always inevitably causes the coupling beam damage, and after earthquake, reparation difficulty and maintenance cost are larger.

The Structural Energy Dissipation cushion technique has been proved to be a kind of effective structural seismic technology, by add the energy consumer with larger energy dissipation capacity in structure, guarantee certain lateral rigidity under normal mode of occupation, structure is in elastic stage, during large shake, along with the increase of lateral displacement, energy consumer produces larger damping, concentrates power consumption, reduce structural vibration response, avoid the agent structure damage.Although since American scholar J. T. P. Yao in 1972 proposes the concept of structural vibration control, various energy-consumption shock-absorption devices emerge in an endless stream, but also rare for the passive energy dissipation research of shear wall structure system so far, tracing it to its cause is mainly that the installation energy-consumption shock-absorption device is difficult more a lot of than frame construction in shear wall structure system.The Thambiratnam of Queensland ,Australia University of Science and Technology etc. once proposed to dig a hole at shear wall differing heights place, makes diagonal brace in the hole energy-consumption shock-absorption device is installed; The Yang Jun of the Central China University of Science and Technology also once proposed the vertical straight joint that crenel shape is opened the city gate in vertical axis, edge in shear wall, and settled vertical energy-consumption shock-absorption device in seam.But in these two kinds of solutions, the former is because undue weakening shear wall rigidity produces weak floor, and complicated difficult does not all have extensively to be accepted by other scholars with realization the latter because construct too.The Madsen of Queensland ,Australia University of Science and Technology etc. propose in coupling beam bottom installation counterbracing, and viscoelastic damper are installed in diagonal brace are born nonelastic deformation dissipation seismic energy; The Deng Zhi of Industrial Products of Guangxi university is identical has also proposed similar conception, is called novel composite coupling beams, namely in steel coupling beam bottom, counterbracing is installed, and in the diagonal brace crosspoint, frcition damper is installed, and improves the coupling beam energy dissipation capacity; The professor of the army of rising of Harbin Institute of Technology waits and proposes to substitute coupling beam with the mild-steel energy-consumption member, improves the coupling beam energy dissipation capacity.The scheme that above-mentioned document proposes has been inherited in traditional ductility of sheer wall seismic design the thought by coupling beam dissipation seismic energy, but utilized energy-consumption shock-absorption device to reduce the plasticity accumulation distortion of coupling beam, be more rational solution, but the energy-consumption shock-absorption device in coupling beam can not be replied nonelastic deformation and still need replace owing to existing after earthquake.

The utility model content

The technical problems to be solved in the utility model is to provide a kind of simple structure, not fragile, energy dissipation capacity is high and the socket type Self-resetting marmem coupling beam damper of good damping effect.

In order to solve the problems of the technologies described above, the utility model provides a kind of socket type Self-resetting marmem coupling beam damper, include the outer sleeve that is separately positioned on two ends to be connected of coupling beam and be connected the austenite shape memory alloy silk that connects outer sleeve and inner sleeve vertical with inner sleeve, wherein, outer sleeve and inner sleeve are in vertical coaxial setting, inner sleeve is by forming by interior upper bush and the interior lower sleeve of spending blue screw rod to connect, and the outer sleeve sidewall is provided with a hole that inner sleeve is installed.

Austenite shape memory alloy is a kind of functional material with multiple special mechanical property, it has super elastic characteristics, namely when its maximum strain is no more than 8%, material deformation can automatically reply fully, do not produce permanent set, also have certain energy dissipation capacity in the process of austenite shape memory alloy generation distortion and deformation-recovery.

Adopt the socket type Self-resetting marmem coupling beam damper of technique scheme to have following advantage: 1, consist of at the vertical austenite shape memory alloy silk that connects outer sleeve and inner sleeve owing to having adopted the outer sleeve that is separately positioned on two ends to be connected of coupling beam to be connected with inner sleeve, so structure is simpler than traditional coupling beam damper; 2, because both sides shear wall limb occurs bending and deformation under horizontal earthquake action, two cantilever coupling beams that damper connects relatively rotate and the vertical changing of the relative positions, drive austenite shape memory alloy by outer sleeve and inner sleeve and produce distortion, the larger energy that absorbs in the process of its deformation-recovery, thereby avoid coupling beam itself impaired, visible coupling beam damper energy dissipation capacity of the present utility model is high, good damping effect and not fragile.

As preferred version, in order to make the austenite shape memory alloy silk stressed more even, simultaneously in order to guarantee the tightness of austenite shape memory alloy silk connection, limit described austenite shape memory alloy silk and be symmetricly set on the inwall of inner sleeve and outer sleeve, and be separately fixed on inner sleeve and outer sleeve by wedge and hold-down bolt.

As preferred version, for the tightness that guarantees that outer sleeve and inner sleeve are connected with coupling beam, limit described outer sleeve and be connected with coupling beam respectively by the junction plate that is embedded in two ends to be connected of coupling beam with inner sleeve.

As preferred version, reduce costs simultaneously for the ease of installing, the cross section that limits described outer sleeve and inner sleeve is rectangle.

As preferred version, under the prerequisite of the stressed reliability that guarantees the austenite shape memory alloy silk, in order to reduce the cost of austenite shape memory alloy silk, limit described austenite shape memory alloy silk and be provided with four groups, the left and right that is separately positioned on interior upper bush and outer sleeve top is inboard, the inboard, left and right of interior lower sleeve and outer sleeve bottom.

Description of drawings

Fig. 1 is the inner sleeve structural representation of the utility model embodiment socket type Self-resetting marmem coupling beam damper;

Fig. 2 is the package assembly schematic diagram of the utility model embodiment socket type Self-resetting marmem coupling beam damper.

The specific embodiment

Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:

as depicted in figs. 1 and 2, the utility model provides a kind of socket type Self-resetting marmem coupling beam damper, include that the outer sleeve 2 that is separately positioned on 1 two ends to be connected of coupling beam is connected with inner sleeve and at the vertical austenite shape memory alloy silk 4 that connects outer sleeve 2 and inner sleeve 3, wherein, outer sleeve 2 and inner sleeve 3 are in vertical coaxial setting, inner sleeve 3 is by forming by interior upper bush and the interior lower sleeve of spending blue screw rod 31 to connect, outer sleeve 2 sidewalls are provided with one the hole of inner sleeve and the outer sleeve cover plate 21 that seals this hole remainder are installed, austenite shape memory alloy silk 4 is symmetricly set on the inwall of inner sleeve 3 and outer sleeve 2, and be fixed on inner sleeve 3 by inner sleeve wedge 32 and hold-down bolt, be fixed on outer sleeve 2 by outer sleeve wedge 22 and hold-down bolt, outer sleeve 2 is connected with coupling beam 1 respectively by the junction plate 11 that is embedded in 1 two ends to be connected of coupling beam with inner sleeve 3, the cross section of outer sleeve 2 and inner sleeve 3 is rectangle, austenite shape memory alloy silk 4 is provided with four groups, be separately positioned on the inboard, left and right of the inboard and interior lower sleeve in the left and right on interior upper bush and outer sleeve 2 tops and outer sleeve 2 bottoms.

Above-described is only preferred embodiment of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite that does not break away from the utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.

Claims

1. socket type Self-resetting marmem coupling beam damper, it is characterized in that: include the outer sleeve that is separately positioned on two ends to be connected of coupling beam and be connected the austenite shape memory alloy silk that connects outer sleeve and inner sleeve vertical with inner sleeve, wherein, outer sleeve and inner sleeve are in vertical coaxial setting, inner sleeve is by forming by interior upper bush and the interior lower sleeve of spending blue screw rod to connect, and the outer sleeve sidewall is provided with a hole that inner sleeve is installed.

2. socket type Self-resetting marmem coupling beam damper according to claim 1, it is characterized in that: described austenite shape memory alloy silk is symmetricly set on the inwall of inner sleeve and outer sleeve, and is separately fixed on inner sleeve and outer sleeve by wedge and hold-down bolt.

3. socket type Self-resetting marmem coupling beam damper according to claim 1, it is characterized in that: described outer sleeve is connected with coupling beam respectively by the junction plate that is embedded in two ends to be connected of coupling beam with inner sleeve.

4. according to claim 1,2 or 3 described socket type Self-resetting marmem coupling beam dampers, it is characterized in that: the cross section of described outer sleeve and inner sleeve is rectangle.

5. socket type Self-resetting marmem coupling beam damper according to claim 4, it is characterized in that: described austenite shape memory alloy silk is provided with four groups, and the left and right that is separately positioned on interior upper bush and outer sleeve top is inboard, the inboard, left and right of interior lower sleeve and outer sleeve bottom.