【摘要】 以列车-桥梁时变系统的能量随机分析理论[5]为基础，采用计算机模拟分析方法，提出了双T型砼简支梁桥空间振动分析模型，计算了列车分别以200、250、300、350Km／h速度通过16m、24m、32m单线简支预应力磁梁桥空间振动响应．为进一步研究高速铁路多跨简支梁桥的横向刚度限值指标打下了基础．更多还原

【Abstract】 Based on the random vibration energy analytic theories for train bridge time -varying system,the computer simulation methods are adopted and one of theanaiytic models for space vibration of double T shape simply-supported con-crete bridge is presented. The space vibration responses are calculated whenthe train runs through the simply-supported prestressed concrete bridge ofthe singie track with the respective span of 16m, 24m, 32m at the speed of200, 250, 300, 350 Km/h respectiveiy, hence lays a foundation for the furtherresearch on the limitation of lateral stiffness for the high -speed railway mul-ti - span simply -supported bridge.更多还原