CN206971451U

CN206971451U - A kind of SMA mild steel composite buffers

Info

Publication number: CN206971451U
Application number: CN201720778083.6U
Authority: CN
Inventors: 刘康宁; 武京; 张世民; 彭晓晖
Original assignee: Xijing University
Current assignee: Xijing University
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2018-02-06
Anticipated expiration: 2027-06-30

Abstract

A kind of SMA mild steel composite buffers, including upper fixed bearing plate and lower fixed bearing plate, more than two pieces of mild steel plate is welded between upper fixed bearing plate and lower fixed bearing plate, it is oblique between adjacent mild steel plate to be connected with the first prestretching SMA and the second prestretching SMA；Described the first prestretching SMA, the second prestretching SMA pre- stretching strain are all identical；It is linear that described mild steel plate is designed as double-paraboloid；Utilize the common collaborative work of prestretching SMA elastic performance and mild steel plate, the problem of linear mild steel initial stiffness of double-paraboloid is small can be improved, increase its power consumption, there is the problem of one section of stress very little because prestretching SMA presence is avoided when mild steel plate is loaded again after once surrender, so the utility model can preferably consume energy, raising initial stiffness, strong adaptability, hysteresis loop are very full.

Description

A kind of SMA- mild steel composite buffers

Technical field

It the utility model is related to damper technical field, and in particular to a kind of SMA- mild steel composite buffers.

Background technology

Earthquake drastically influence the production and living and life security of people, people increasingly pay attention to now the antidetonation of structure with Damping performance.But in order to meet the needs of function, often globality and poor rigidity are mainly manifested in plane and chased after existing structure Ask maximum, pursue big window on facade, spatially pursue large cantilever, these result in the unbalanced of structure stress, cause structure Integral rigidity declines, and exacerbates structure destruction caused when by earthquake.In order to improve the work of Structures under Earthquake Performance, various energy-consumption dampers are have developed in recent years.And mild steel damper is as a kind of damper passively to consume energy, itself by Low in yield point, easily surrender, different design forms have different effects under external force, soft for what is surrendered outside plane Steel damper, it is too low initial stiffness to be often present, performance is not played in the state of small shake or wind shake, only under macroseism Its energy dissipation capacity of competence exertion.

The content of the invention

The shortcomings that in order to overcome above-mentioned prior art, the purpose of this utility model are to provide a kind of compound resistance of SMA- mild steel It Buddhist nun's device, can preferably consume energy, improve initial stiffness, strong adaptability, hysteresis loop is very full.

In order to achieve the above object, the technical solution adopted in the utility model is：

A kind of SMA- mild steel composite buffers, including upper fixed bearing plate 1 and lower fixed bearing plate 2, in upper fixed pressure-bearing More than two pieces of mild steel plate 3 is welded between plate 1 and lower fixed bearing plate 2, it is oblique between adjacent mild steel plate 3 to be connected with One prestretching SMA 4 and the second prestretching SMA 5.

Described the first prestretching SMA 4, the second prestretching SMA 5 pre- stretching strain are all identical.

It is linear that described mild steel plate 3 is designed as double-paraboloid.

Compared with prior art, the beneficial effects of the utility model are：Utilize prestretching SMA elastic performance and mild steel plate 3 Common collaborative work, the problem of linear mild steel initial stiffness of double-paraboloid is small can be improved, increase its power consumption, due to prestretching SMA's There is the problem of one section of stress very little in the presence of avoiding when mild steel plate 3 is loaded again after once surrender, so the utility model It can preferably consume energy, improve initial stiffness, strong adaptability, hysteresis loop is very full.

Brief description of the drawings

Fig. 1 is frontal projection's schematic diagram of the present utility model.

Fig. 2 is side elevation perspective view of the present utility model.

Embodiment

Utility model is further described below in conjunction with the accompanying drawings.

Referring to Figures 1 and 2, a kind of SMA- mild steel composite buffers, including upper fixed bearing plate 1 and lower fixed bearing plate 2, Six pieces of mild steel plates 3 are welded between upper fixed bearing plate 1 and lower fixed bearing plate 2, the oblique company between adjacent mild steel plate 3 The first prestretching SMA 4 and the second prestretching SMA 5 are connected to, the first prestretching SMA 4, the second prestretching SMA 5 pre- stretching strain are all identical, Deformation power consumption is carried out by mild steel plate 3 and prestretching SMA, it is linear that described mild steel plate 3 is designed as double-paraboloid.

Operation principle of the present utility model is：When earthquake occurs, the SMA- mild steel composite buffers that are connected in structure It can play a role, there is enough rigidity in small shake, ensure the norm for civil defense of structure no damage in small earthquake, it is soft in middle shake and big shake The prestretching SMA 4 of steel plate 3 and first, the collective effects of the second prestretching SMA 5, are consumed energy, and with it, sufficiently power consumption meets that structure exists The norm for civil defense not fallen during big shake.

Claims

A kind of 1. SMA- mild steel composite buffers, it is characterised in that：Including upper fixed bearing plate (1) and lower fixed bearing plate (2), More than two pieces of mild steel plate (3) is welded between upper fixed bearing plate (1) and lower fixed bearing plate (2), in adjacent mild steel It is oblique between plate (3) to be connected with the first prestretching SMA (4) and the second prestretching SMA (5).
A kind of 2. SMA- mild steel composite buffers according to claim 1, it is characterised in that：The first described prestretching SMA (4), the second prestretching SMA (5) pre- stretching strain is all identical.
A kind of 3. SMA- mild steel composite buffers according to claim 1, it is characterised in that：Described mild steel plate (3) is set It is linear to be calculated as double-paraboloid.