橡胶隔震支座抗拉装置受力性能试验研究  

Experimental research on mechanical performance of tension-resistant device for rubber bearings

作　　者：陈鹏[1] 周颖[1] 刘璐[1] 蒋瓅[2] 胡凯[2] 瞿革[2] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]中船第九设计研究院工程有限公司,上海200063

出　　处：《建筑结构学报》2017年第7期113-119,共7页Journal of Building Structures

基　　金：国家自然科学基金项目(51322803)

摘　　要：针对高层隔震结构在高烈度区可能存在的橡胶支座受拉以及倾覆危险的问题,设计了一种抗拉装置,并对其工作性能进行了试验验证。原型带抗拉装置的支座与普通支座的低周反复加载试验对比表明:压剪状态下,装置对支座本体的剪切性能基本不产生影响;拉剪状态下,该装置能够发挥抗拉作用,保证支座水平向力学性能的发挥;极限拉伸状态下,装置能发挥限位作用,承受大部分拉力,从而减小支座本体拉应力。同时,对模型抗拉装置进行了拟静力试验,验证了模型抗拉装置不会对支座在压剪状态下的剪切性能产生影响,但能起到预期的减小支座的拉应力和限位作用。A novel form of tension-resistant device for isolator was invented to solve the problem of tensile stress in rubber bearings and overturning problem for high-rise isolated structures under strong earthquakes. Series experiments were conducted to verify its workability. Results of cyclic load test of prototype device illustrate that the tension- resistant device would barely influence the horizontal mechanical property of bearing on compression-shear condition. Besides, the device can work well to protect bearing on tension-shear condition, so that the horizontal mechanical property can be guaranteed. Tensile stress in bearing itself can be limited because most of the tensile force would be undertaken by the device. Furthermore, quasi-static tests on model devices were conducted to verify that the model device can also be effective on tension resistance and would not influence the horizontal mechanical properties on compression-shear condition. And the devices can also realize the perspective effect of diminishing the tensile stress and restraining the maximum displacement.

关 键 词：高层隔震结构 铅芯橡胶隔震支座 抗拉装置 拟静力试验 受力性能 

分 类 号：TU352.1[建筑科学—结构工程] TU317.1