高速铁路钢桥疲劳评估标准车型研究  

Study on Evaluation of Fatigue Standard Models of High-speed Railway Steel Bridge

作　　者：杨鑫炎 

机构地区：[1]中国中铁七局集团第三工程有限公司,陕西咸阳712000

出　　处：《城市道桥与防洪》2014年第7期331-333,25,共3页Urban Roads Bridges & Flood Control

摘　　要：该文以高速铁路钢桥为研究背景,针对新型动车组车型,对高速铁路钢桥疲劳评估标准车型进行了研究。通过荷载模拟法,考虑列车荷载产生的结构动力效应、列车轴重,以及双线铁路的影响,并统计列车的轴距、车厢数,以及每日列车通过的趟数,根据等效损伤原理得到高铁铁路斜拉桥的典型疲劳车型。同时,给出了铁路双线系数的简化计算表达式。Taking a high-speed railway steel bridge as the study background, and aiming at the new electric multiple unit(EMU), the article studies the evaluation of fatigue standard models of high-speed railway steel bridge. The loading simulation method is used to consider the structural dynamic effect produced by train load, the train axle load and the influence of double-line railway, and to count the train wheel base, car number and daily train passing times. Based on the principle of equivalent damage, the article introduces the typical fatigue models of high-speed railway cable-stayed bridge, and also gives the simplified calculation formula of railway double-line coefficient.

关 键 词：高速铁路 斜拉桥 疲劳标准车型 双线系数 

分 类 号：U441.4[建筑科学—桥梁与隧道工程]