大跨度连续梁0#段新型可伸缩托架设计与施工技术研究  

Research on the Design and Construction Technology of a New Type of Scalable Support for 0# Section of a Large Span Continuous Beam

作　　者：赵莉 ZHAO Li(China Railway 25th Bureau Group Fourth Engineering Co.,Ltd.,Liuzhou 545007,China)

机构地区：[1]中铁二十五局集团第四工程有限公司,柳州545007

出　　处：《价值工程》2025年第9期30-32,共3页Value Engineering

摘　　要：本文介绍了湘桂铁路柳州枢纽柳江双线特大桥的大跨度连续梁0#段支架设计,针对其外形尺寸大、主墩位于深水中的特点,进行了三种支架方案的比选,最终选定墩顶托架方案。在此基础上,创新设计了新型可伸缩托架,提高了重复使用率,降低了施工成本。文章详细阐述了托架的结构设计、安装顺序、关键技术及验算结果,为类似桥梁的施工提供了参考。This article introduces the support design of the 0#section of the large-span continuous beam of the Liujiang double track super large bridge at the Liuzhou hub of the Hunan Guangxi Railway.Based on its large external dimensions and the main pier located in deep water,three support schemes were compared and finally the pier top support scheme was selected.On this basis,a new type of expandable bracket was innovatively designed,which improved the reuse rate and reduced construction costs.The article elaborates in detail on the structural design,installation sequence,key technologies,and verification results of the bracket,providing reference for the construction of similar bridges.

关 键 词：大跨度连续梁 0#段支架设计 墩顶托架 新型可伸缩托架 施工关键技术 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]