大跨度连续刚构桥长期下挠成因分析与建议  

Analysis and Suggestion on Long-term Deflection of Long-span Continuous Rigid-frame Bridge

作　　者：陈浩[1] 毛焕雄 曲道来 

机构地区：[1]岳阳市公路桥梁基建总公司,湖南岳阳414000 [2]湖南省吉茶高速公路建设开发有限公司,湖南吉首416000

出　　处：《公路工程》2012年第2期45-49,共5页Highway Engineering

摘　　要：跨中下挠过大是大跨径连续刚构桥常见病害之一,以吉茶高速公路的一座55 m+100 m+55 m的连续刚构桥为实际工程背景,对大跨度连续刚构桥长期下挠的主要原因进行分析,得出一些有意义的建议和措施,以供参考。Undue deflection at midspan is one of the common hazards on long-span continuous rigid-frame bridge.In this paper,several influence parameters on long-term deflection of long-span continuous rigid-frame bridge have been analysed,some suggestions and methods are given for reference.A continuous rigid-frame bridge with span arrangement 55 m＋100 m＋55 m on Hunan Province Jicha highway was selected as the engineering background.

关 键 词：大跨径 连续刚构桥 长期下挠 影响参数 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]