地震作用下铅芯橡胶隔震支座在地铁车站中的应用

文章以合肥市某地铁车站为研究对象,利用有限元软件ANSYS分别建立未使用隔震支座和使用铅芯橡胶隔震支座的箱型地铁车站模型,输入调幅后的El-centro地震波作为地震作用进行数值模拟。比较2种模型情况下车站中柱的动力响应。结果表明:使用铅芯橡胶隔震支座作为局部减震措施对于改变结构自振频率影响不大,但在很大程度上可以减小车站中柱在地震作用下的响应,起到减震的作用。

Application of Lead-core Rubber Isolation Bearing in Subway Station under Earthquake

Taking a subway station in Hefei as the research object, and uses the finite element software ANSYS to establish two box-shaped subway station models, one adopts lead-core rubber isolation bearing and the other is not adopted. Input the adjustment data of the El-centro wave as a seismic effect, and compare the dynamic response of the centre column in the two models. The results show that the use of lead-core rubber isolation bearing as a local shock absorber has little effect on the natural frequency of the structure, but can largely reduce the subway station in column under the action of earthquake response, and have the effect of shock absorption.