本文選題：隔震橋梁　切入點(diǎn)：摩擦擺　出處：《機(jī)械強(qiáng)度》2015年05期

【摘要】：建立摩擦擺隔震橋梁簡化力學(xué)模型,采用模態(tài)疊加法計(jì)算地震作用下的響應(yīng)幅值。通過與SAP2000有限元實(shí)體模型仿真結(jié)果對比,研究簡化力學(xué)模型的計(jì)算精度。結(jié)果表明:簡化力學(xué)模型能夠較為準(zhǔn)確計(jì)算出隔震橋梁的響應(yīng)幅值;El Centro地震波作用下,簡化力學(xué)模型的分析結(jié)果基本能夠滿足工程精度要求;隔震橋梁主梁及橋墩地震響應(yīng)分別以隔震模態(tài)、二階模態(tài)為主。
[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.
【作者單位】： 西南交通大學(xué)機(jī)械工程學(xué)院;
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(2010ZT03)資助~~
【分類號】：U442.55

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本文編號：1717105