大跨度铁路桥梁疲劳设计6线系数研究  

STUDY ON THE FATIGUE DESIGN OF SIX-TRACK COEFFICIENT IN LONG-SPAN RAILWAY BRIDGE

作　　者：田越[1] 崔鑫[1] 

机构地区：[1]铁道科学研究院铁道建筑研究所,北京100081

出　　处：《钢结构》2007年第4期10-14,共5页Steel Construction

摘　　要：针对某大跨度6线铁路桥梁,从分析铁路钢桥双线系数的制定方法入手,根据列车的运营情况,应用概率理论分析6线列车通过长大桥梁时的相遇情况,确定6线列车过桥时各线的相遇次数。利用大型通用有限元计算软件STAAD/CHINA计算列车过桥时桥梁各控制杆件的受力情况,运用线性累积损伤理论,通过各线的损伤之比求得疲劳设计6线系数。Started with analyzing the establishing method for double-track coefficient and considered with the train service situation,the theory of probability to determine the probability of train encounter is used on long-span six-track railway bridge and the encounter time on the bridge is gotten.With the results of the FEM program STAAD/CHINA and the linear damage rule,the fatigue six-track coefficient of the control trusses is obtained in the long-span six-track railway bridge.

关 键 词：大跨度钢桥 疲劳检算 线性累积损伤 6线系数 

分 类 号：U448.13[建筑科学—桥梁与隧道工程]