组合隔震系统滑动支座的滑移系数研究

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磨擦支座组成，其中橡胶支座提供系统的弹性复位力，滑移磨擦支座通过滑移隔离地震，滑移磨擦支座的相对起滑力即滑移系灵敏是影响隔震效果的主要因素之一。分别调整滑移磨擦支座上的竖向力以改变其起滑力，研究磨擦支座的滑移系数，对小、中、大 三种不同滑动系数时模型结构的地震的反应做了分析比较，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。

Study on Sliding Factor in Combined Isolation System under Seismic Excitation

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.