组合隔震系统滑动支座的滑移系数研究  

Study on Sliding Factor in Combined Isolation System under Seismic Excitation

作　　者：朱玉华[1] 吕西林[1] 杜芳[1] 施卫星[1] 冯德民 

机构地区：[1]同济大学,上海200092 [2]日本藤田技术研究所

出　　处：《结构工程师》2001年第2期34-40,44,共8页Structural Engineers

摘　　要：本文对组合滑移隔震系统房屋模型进行了振动台试验研究 ,组合滑移隔震系统由橡胶支座和滑移摩擦支座组成 ,其中橡胶支座提供系统的弹性复位力 ,滑移摩擦支座通过滑移隔离地震 ,滑移摩擦支座的相对起滑力即滑移系数是影响隔震效果的主要因素之一。分别调整滑移摩擦支座上的竖向力以改变其起滑力 ,研究摩擦支座的滑移系数 ,对小、中、大三种不同滑动系数时模型结构的地震反应做了分析比较 ,结果表明滑动系数小时隔震效果好 ,而滑动系数大时差。另外 ,三种不同滑动系数中等时竖向拉力最大 ,滑动系数小时竖向拉力最小。A shake table study of model building with combined islation system was presented.The breakaway force of the sliders(defined as sliding factor here) was investigated.Three different sliding factors were considered in tests under El; Centro and Hachinohe ground motions.Experimental results of the three cases were compared here.The results prove that the structural response with low sliding factor is smaller than those with moderate sliding factor and high sliding factor. In addition,tension in rubber bearings due to uplift occurred during the test of the model building,and the uplift occured with all three sliding factors.

关 键 词：组合滑移隔震系统 模型试验 滑移系数 竖向拉力 

分 类 号：TU352.1[建筑科学—结构工程]