摩擦摆隔震桥梁简化力学模型动力学分析
发布时间:2018-04-06 00:13
本文选题:隔震桥梁 切入点:摩擦摆 出处:《机械强度》2015年05期
【摘要】:建立摩擦摆隔震桥梁简化力学模型,采用模态叠加法计算地震作用下的响应幅值。通过与SAP2000有限元实体模型仿真结果对比,研究简化力学模型的计算精度。结果表明:简化力学模型能够较为准确计算出隔震桥梁的响应幅值;El Centro地震波作用下,简化力学模型的分析结果基本能够满足工程精度要求;隔震桥梁主梁及桥墩地震响应分别以隔震模态、二阶模态为主。
[Abstract]:The simplified mechanical model of frictional pendulum isolated bridge is established and the response amplitude under earthquake action is calculated by modal superposition method.By comparing with the simulation results of SAP2000 finite element model, the computational accuracy of simplified mechanical model is studied.The results show that the simplified mechanical model can accurately calculate the response amplitude of the isolated bridge under the action of El Centro seismic wave, and the analysis results of the simplified mechanical model can basically meet the requirements of engineering accuracy.The seismic responses of main beam and pier of isolated bridge are mainly isolated mode and second order mode respectively.
【作者单位】: 西南交通大学机械工程学院;
【基金】:中央高校基本科研业务费专项资金项目(2010ZT03)资助~~
【分类号】:U442.55
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