摘要
我国铁路桥梁设计中,列车荷载按中-活载取值.对简支梁直线桥桥墩的纵向偏心检算时,常将单孔轻载作为加载图示.从轨面制动力的动力特性、最不利加载工况两方面入手,对铁路简支梁长桥桥墩的偏心安全性进行了计算和讨论,分析了制动力作用下长桥桥墩受力特点.
In China＇s railway bridge design, standard railway live load specified by P.R.C is designated for using. In checking longitudinal eccentricity for straight bridge piers of simple supported beam, single aperture light loading pattern is often used. From two aspects which are dynamic performance of rail surface＇s braking force and the most disadvantageous loading conditions, the paper calculates and discusses eccentricity security for long bridge piers of railway simple supported beam. The paper analyses long bridge pier＇s forcing features under braking force which would afford reference for perfecting provisions of bridge specifications on the braking force.
出处
《江西理工大学学报》
CAS
2008年第1期57-60,共4页
Journal of Jiangxi University of Science and Technology
关键词
铁路桥梁
制动力
偏心
加载工况
railway bridge
braking force
eccentricity
load cases
