Beam-track interaction of high-speed railway bridge with ballast track  

作　　者：闫斌 戴公连 张华平 

机构地区：[1]Department of Civil Engineering,Central South University [2]Maintenance Departments of Guangzhou Municipal Engineering

出　　处：《Journal of Central South University》2012年第5期1447-1453,共7页中南大学学报（英文版）

基　　金：Project(50678176) supported by the National Natural Science Foundation of China

摘　　要：Based on the construction bridge of Xiamen-Shenzhen high-speed railway(9-32 m simply-supported beam + 6×32 m continuous beam),the pier-beam-track finite element model,where the continuous beam of the ballast track and simply-supported beam are combined with each other,was established.The laws of the track stress,the pier longitudinal stress and the beam-track relative displacement were analyzed.The results show that reducing the longitudinal resistance can effectively reduce the track stress and the pier stress of the continuous beam,and increase the beam-track relative displacement.Increasing the rigid pier stiffness of continuous beam can reduce the track braking stress,increase the pier longitudinal stress and reduce the beam-track relative displacement,Increasing the rigid pier stiffness of simply-supported beam can reduce the track braking stress,the rigid pier longitudinal stress and the beam-track relative displacement.Based on the construction bridge of Xiamen-Shenzhen high-speed railway （9-32 m simply-supported beam ＋ 6×32 m continuous beam）, the pier-beam-track finite element model, where the continuous beam of the ballast track and simply-supported beam are combined with each other, was established. The laws of the track stress, the pier longitudinal stress and the beam-track relative displacement were analyzed. The results show that reducing the longitudinal resistance can effectively reduce the track stress and the pier stress of the continuous beam, and increase the beam-track relative displacement. Increasing the rigid pier stiffness of continuous beam can reduce the track braking stress, increase the pier longitudinal stress and reduce the beam-track relative displacement. Increasing the rigid pier stiffness of simply-supported beam can reduce the track braking stress, the rigid pier longitudinal stress and the beam-track relative displacement.

关 键 词：high-speed railway beam-track interaction ballast track rail longitudinal force continuous beam 

分 类 号：U211[交通运输工程—道路与铁道工程]