摘要
铁路规范根据铁路工程混凝土的结构特点以及实际服役年限需求提出了相应的设计使用年限要求。长期露天服役的高速铁路具有承受高速列车高频疲劳荷载的运营特征以及竖向多层纵向连续的结构特征,使得铁路工程对混凝土结构设计使用年限的要求更为复杂。本文依据混凝土结构设计使用年限规定,梳理了铁路行业对混凝土结构设计使用年限的要求,由此提出高速铁路混凝土结构设计使用年限存在的问题和建议,以期为高速铁路混凝土结构制定合理的设计使用年限提供参考。
According to the structural characteristics of railway engineering concrete and the actual service life requirements,the railway code puts forward corresponding design service life requirements.The high speed railway has been in service in the open air for a long time,which has the characteristics of withstanding high-frequency fatigue load of high speed trains and vertical multi-layer longitudinal continuous structure,making the requirements of railway engineering on the design service life of concrete structures more complex.Based on the provisions on the design service life of concrete structures,this paper combs the requirements of the railway industry for the design service life of concrete structures,and puts forward problems and suggestions on the design service life of high speed railway concrete structures,with a view to providing reference for the formulation of reasonable design service life of high speed railway concrete structures.
作者
李化建
董昊良
杨志强
温家馨
易忠来
LI Huajian;DONG Haoliang;YANG Zhiqiang;WEN Jiaxin;YI Zhonglai(Railway Engineering Research Institute,China Academy of Railway Science Corporation Limited,Beijing 100081,China;State Key Laboratory Track Technology of High-Speed Railway,China Academy of Railway Science Corporation Limited,Beijing 100081,China)
出处
《铁道建筑》
北大核心
2022年第12期1-6,共6页
Railway Engineering
基金
国家自然科学基金高铁联合基金(U1934206)。
关键词
高速铁路
混凝土结构
设计使用年限
混凝土劣化模型
疲劳荷载-环境耦合
high speed railway
concrete structure
designed service life
concrete deterioration model
fatigue load-environment coupling
作者简介
第一作者:李化建(1976-),男,研究员,博士。E-mail:chinasailor@163.com。
