铁路曲线梁桥抗震设计分析

Study of aseismic design for railway curve-girder bridges

笔者在文中利用时程分析方法对铁路曲线梁桥地震响应进行了分析.在分析过程中考虑了连续曲线梁桥和连续曲线刚构桥两种桥型,地震波采用人造地震波,考虑了一维地震动和多维地震动输入,另外还考虑了地震动输入方向对曲线梁桥地震响应的影响.并对铁路曲线梁桥抗震设计进行了探讨,得到了实际应用价值的一些结论.

Seismic responses of railroad curved-girder bridge were treatment using the time-history analytic method. Two bridge type, continuous curved-girder bridge and continuous curved rigid frame bridge, have been taken into account during the analytical process. Artificial seismic waves were adopted. The import of one dimension earthquake motion and many dimensions earthquake motion were considered,In addition, the contribution caused by the earthquake motion import direction on curved girder bridge were consideration. Then aseismic design of railroad curved-girder bridge was disquisition,Some practical application conclusions were obtained