摘要
我国山区桥梁主要跨越深沟峡谷地形,其中高墩梁式桥型最为常见。高墩桥梁区别于普通桥梁,风荷载的静力效应是作用于桥梁高墩的主要纵横向静力荷载。当桥梁位于高地震烈度区时,对桥梁高墩抗震要求更高。文章在现行公路桥梁抗风及抗震规范的基础上,对桥梁高墩的静力、动力及施工阶段特性进行研究。通过分析和比较,得到高墩梁式桥墩柱的静力、动力和施工阶段响应特性,同时阐述了空心薄壁高墩的计算要点,为将来的山区高墩桥梁下部结构设计提供参考。
Mountainous bridges in China mainly span deep gorges and valleys,with highpier girder bridges being the most common type.Unlike ordinary bridges,high-pier bridges are primarily subjected to longitudinal and transverse static loads from wind effects.When located in high seismic intensity zones,higher seismic resistance requirements are imposed on high piers.Based on current highway bridge wind and seismic resistance specifications,this paper investigates the static,dynamic,and constructionphase characteristics of high bridge piers.Through analysis and comparison,the response characteristics of high-pier girder bridge columns under static,dynamic,and construction conditions are obtained.Additionally,key calculation points for hollow thin-walled high piers are elucidated,providing references for the future design of substructures for mountainous high-pier bridges.
作者
曾仲
刘伟
宋松科
ZENG Zhong;LIU Wei;SONG Song-ke(Sichuan Communications Planning,Survey&Design Institute Co.,Ltd.,Chengdu 610017,China)
出处
《中国市政工程》
2026年第1期5-9,131,共6页
China Municipal Engineering
基金
四川省自然科学基金项目(2024NSFSC0162)。
关键词
高墩桥梁
风荷载
高墩抗震
空心薄壁墩
结构计算
high-pier bridges
wind load
high-pier seismic resistance
hollow thin-walled piers
structural calculation
