既有重载铁路简支梁桥提速适应性分析  

Analyzing Adaptability of Increasing Speed of Existing Heavy Haul Simply Supported girder Bridges

作　　者：龙卫国 蒋丽忠[3] 王晓锋[4] 

机构地区：[1]湖南城建职业技术学院,湖南湘潭411101 [2]湘潭大学工程结构动力学与可靠性分析重点实验室,湖南湘潭411101 [3]中南大学土木工程学院,湖南长沙10075 [4]南华大学数理学院,湖南衡阳421001

出　　处：《湖南科技大学学报（自然科学版）》2017年第4期49-53,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：湖南省普通高等学校重点实验室开发课题资助项目(KZ070010105)

摘　　要：以朔黄线温塘河特大桥为例,采用一系轴箱悬挂货车模型,建立重载列车-有砟轨道-桥梁的空间动力学方程组,采用迭代求解,编制了相应重载铁路车-桥耦合振动分析程序.通过仿真计算和现场试验分析了重载列车速度对重载铁路简支梁桥的各种动力性能指标的影响;借助现有的铁路桥梁检测规范,对既有重载铁路桥梁提速适应性进行了分析,给重载列车通过该铁路桥梁的最高速提出建议.The Wen-Tang river extra large bridge in Shuo-Huang railway was taken as an example, by using an axle box suspension truck model, coupling motion equations of vehicle-bridge system of heavy haul were built up. By using the iteration, the bridge-vehicle coupling vibration analysis program of heavy haul railway was established. The influence of a variety of dynamic performance indicators for the speed of heavy-haul train over simply supported girder bridges were analyzed by the simulation calculation and field test. With the inspection specification of the existing railway bridge, the adaptability of increasing speed of existing heavy haul railway bridges were analyzed, the highest speed of heavy-duty train through the railway bridges was put forward the proposal.

关 键 词：重载列车 车-系统 动力性能指标 铁路桥梁检测规范 提速适应性 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]