【摘要】 利用大型结构分析程序ANSYS/TRANSIENT,对地震波三向正交分量独立作用和联合作用下连续刚构桥的地震反应的行波效应进行了时程分析的数值模拟,分析了连续刚构桥在各向振动分量的作用,以及各向振动不同相位差的行波效应,对其地震反应的一般影响规律进行了讨论。结果表明:在地震波的各单向行波效应和三向正交行波效应时,结构的内力均有不同程度的增大,而结构的位移却呈现减少的趋势,结构的振动周期延长。更多还原

【Abstract】 The advanced finite element analysis program ANSYS/TRANSIENT is successfully used in numerical simulation of seismic response of rigid-framed bridge to traveling wave exciting from three dimensional orthogonal components acting individually or jointly.It is studied to the effects of traveling wave in different direction and phase lag.The general influence of traveling wave in the long span rigid-framed bridge is obtained: when considering single or three dimensional traveling wave,the internal force of structure increases in the different extent and the natural period becomes longer,however,the structural displacement decreases.5 tabs,7 figs,13 refs.更多还原