连续梁0号块临时固结施工技术

Temporary Rigid Fixity Construction Technology of 0 Block Continuous Beam

改建铁路宁启线扬州至海安段复线电气化改造工程新三阳河特大桥(40+72+40)m连续梁跨越新三阳河。连续梁主墩位于河道中,且连续梁纵向中心线与主墩纵向中心线存在15°夹角,临时固结体系如何设置是本桥0号块施工的一项重要内容,更是0号块施工的关键工序之一。本文主要介绍墩梁斜交情况下连续梁0号块临时固结体系设计、结构验算以及施工注意事项,可为同类桥梁结构提供有益的参考。

Rebuilding the continuous beam of Xinsanyang super-large bridge（40 ＋72 ＋40）m of the double line electrification reconstruction project in Yangzhou to Haian section of Ningqi Line to span Xinsanyang River.The main piers of continuous beam is located in the river,and there is a 15° angle between the longitudinal center line of continuous beam and the longitudinal center line of main pier.How to set up temporary rigid fixity system is an important content in 0 block construction of the bridge and it＇s also one of the key working procedures of 0 block construction.This paper mainly introduces the temporary rigid fixity system design,structure calculation and construction points for attention of 0 block continuous beam in the condition of pier beam oblique to provide beneficial reference for the similar bridge construction.