【摘要】 以河渡槽为背景,应用ANSYS软件,建立了有限元渡槽结构3跨模型,计算了结构在地震波一致输入和考虑行波效应的地震波多点输入地震反应分析,并进行比较。地震波的输入,通过APDL语言编制的程序来完成,其中多点输入采用了大质量法来施加加速度。结果表明:多点输入对3跨渡槽结构地震纵向位移反应分量有较大影响,对横向位移影响较小。更多还原

【Abstract】 Using ANSYS,three-span aqueduct modal is founded.The seismic response under coherent-vibration input and multi-input is calculated and compared respectively.Travel-wave effect is taken into considered in the multi-input.The seismic wave is input by way of coherent-vibration input program and program compiled by APDL.The large mass method is taken into utility in the latter input.Results show that the travel-wave affects the lengthways displacement greatly while having little effect on breadthways displacement.更多还原