基础隔震结构竖向地震反应试验研究
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摘要
通过模拟地震振动台试验,研究了基础隔震结构的竖向地震反应特点。首先通过对不同支座的竖向力进行比较可知,基础隔震结构在遭遇水平地震波时,位于支座布置平面中非对称轴的支座处可能产生较大的竖向反应;其次对隔震结构和非隔震结构的竖向地震反应进行对比分析可知,基础隔震结构对于竖向地震动的隔震效果不明显。因此竖向地震动对结构的作用不可忽视,在进行基础隔震结构抗震设计中应加以关注。
The vertical seismic responses of base isolated buildings were studied by means of shaking table model test.First,we got that vertical response of bearing on non-symmetry axis which could be severe under horizontal earthquake wave through the comparison of vertical forces of different bearings.Comparison of vertical responses of isolated and non-isolated structure indicated that the effect of vertical isolation was not obvious so the effect of vertical earthquake could not be ignored and high attantion during seismic design of structures should be paid.
The vertical seismic responses of base isolated buildings were studied by means of shaking table model test.First,we got that vertical response of bearing on non-symmetry axis which could be severe under horizontal earthquake wave through the comparison of vertical forces of different bearings.Comparison of vertical responses of isolated and non-isolated structure indicated that the effect of vertical isolation was not obvious so the effect of vertical earthquake could not be ignored and high attantion during seismic design of structures should be paid.
引文
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[5]吕西林,马一飞,阮永辉,等.同济大学新建多功能振动实验中心局部隔震方案设计及分析[J].结构工程师,2010,26(3):95-102. Lu Xilin,Ma Yifei,Ruan Yonghui,et al.Design and Analysis of the Seismic Isolation for a Newly-Built Multi-function Vibration Test Center of Tongji University [J].Structural Engineers,2010,26(3):95- 102.(in Chinese)
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