铁路桥梁正常使用极限状态可靠度校准研究  

Research on Reliability Adjustment of Railway Bridge Serviceability in Limit State

作　　者：朱志营 齐成龙[1] 

机构地区：[1]铁道第三勘察设计院集团有限公司桥梁处,天津300142

出　　处：《铁道标准设计》2015年第1期80-83,共4页Railway Standard Design

摘　　要：分别以现行容许应力法规范、试行极限状态法规范和欧洲规范为依据,对某铁路工程预制后张法简支T梁的正截面抗裂性和桥梁刚度进行验算,从而对3种规范在正常使用极限状态下的可靠度进行比较,得出3种情况下的安全储备大小顺序:欧洲规范>现行容许应力法规范>试行极限状态法规范,并对试行极限状态法规范提出建议。On the basis of the current allowable stress specification, preliminary limit state specification and the European specification, normal section crack resistance and bridge rigidity of one railway post-stressed simple supported T beam are calculated, and the reliabilities of serviceability limit state of the three specifications are compared with the safety stock sequence： Euro code 〉 allowable stresses method code〉 limit state method code. Finally, some suggestions are put forward on the preliminary limit state specification.

关 键 词：铁路桥梁 可靠度 容许应力法 极限状态法 

分 类 号：U442.51[建筑科学—桥梁与隧道工程]