基于极限状态法的高铁桥上双块式无砟轨道配筋设计研究  

Research on Reinforcement Design of Double-block Ballastless Track on High-speed Railway Bridge Based on Limit State Method

作　　者：胡志鹏[1] HU Zhipeng(China Railway First Survey and Design Institute Group Co.,Ltd.,Xi'an 710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司

出　　处：《铁道标准设计》2019年第10期72-75,105,共5页Railway Standard Design

摘　　要：为使我国铁路设计技术更好地与国际设计方法接轨,针对高速铁路桥上双块式无砟轨道结构,依据Q/CR9130-2018《铁路轨道设计规范(极限状态法)》,结合有限元和数值计算的方法,运用极限状态法对道床板和底座进行配筋设计研究。结果表明:极限状态法中正常使用极限状态计算弯矩结果与容许应力法基本一致,承载能力极限状态计算结果较大;道床板和底座极限状态法的配筋数量略低于容许应力法。In order to better integrate the domestic railway technologies with international design methods, and aiming at the double-block ballastless track structure on high-speed railway bridge, this paper conducts researches on the reinforcement design of roadbed slab and base with limit state method based on Code for Design of Railway Track Q/CR9130-2018(Limit State Method) and by means of the finite element method and numerical calculation method. The results show that: the calculation results of bending moment in normal usage limit state are basically consistent with the allowable stress method. The calculation results of the bearing capacity limit state are larger. The number of reinforcement in ballastless slab and base required by the limit state method is slightly lower than that by the allowable stress method.

关 键 词：桥上无砟轨道 双块式无砟轨道 道床板 底座 极限状态法 容许应力法 配筋设计 高速铁路 

分 类 号：U213.244[交通运输工程—道路与铁道工程]