钢板削弱型叠层橡胶支座力学性能试验研究  

Experimental study on mechanical properties of steel plate weakened laminated rubber bearings

作　　者：马乾瑛[1] 李冰冰 业嘉超 MA Qianying;LI Bingbing;YE Jiachao(School of Civil Engineering,Chang’an University,Xi’an 710064,China;Northwest Electric Power Design Institute Limited Company of China Power Engineering Consulting Group,Xi’an 710075,China)

机构地区：[1]长安大学建筑工程学院,陕西西安710064 [2]中国电力工程顾问集团西北电力设计院有限公司,陕西西安710075

出　　处：《浙江大学学报（工学版）》2024年第7期1436-1445,1478,共11页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(51208041);陕西省自然科学基金资助项目(2020SF-382,2014JM2-5080);长安大学教学改革研究项目(20211822300103292815)。

摘　　要：结合厚层橡胶支座和普通叠层橡胶支座的优点设计新型钢板削弱型叠层橡胶支座,通过调节环形钢板的总数和位置进行支座水平和竖向刚度的有效控制.选择3种中心橡胶层厚度的钢板削弱型叠层橡胶支座,分析所设计支座的滞回特性、刚度特性和耗能特性.基于串-并联模型,构建水平和竖向刚度的计算模型.试验结果表明,相比普通叠层橡胶支座,钢板削弱型叠层橡胶支座的水平和竖向刚度更低,水平和竖向耗能比更高,滞回曲线更光滑饱满.所建模型的计算结果与试验结果的一致性较好,误差绝对值不超过10%.所建模型在评估钢板削弱型叠层橡胶支座的水平和竖向刚度方面具有较高的精度和适用性.A new type of steel plate weakened laminated rubber bearing was designed,combining the advantages of thick rubber bearings and ordinary laminated rubber bearings.By adjusting the number and position of annular steel plates,the horizontal and vertical stiffness of the bearing were effectively controlled.The hysteretic characteristics,stiffness characteristics,and energy dissipation characteristics of the bearings with three central rubber layer thicknesses were studied.Based on the series-parallel model,calculation models for horizontal and vertical stiffness were established.Experimental results showed that compared with ordinary laminated rubber bearings,the steel plate weakened laminated rubber bearings had lower horizontal and vertical stiffness,higher horizontal and vertical energy dissipation ratios,and smoother and fuller hysteresis curves.The calculation results of the proposed model were in good agreement with the experimental results,with absolute errors of less than 10%.The proposed model had good accuracy and applicability in evaluating the horizontal and vertical stiffness of steel plate weakened laminated rubber bearings.

关 键 词：橡胶支座 钢板削弱 串-并联模型 三维隔震 滞回特性 

分 类 号：TU352.1[建筑科学—结构工程]