港口航道与近海工程2025，Vol.62Issue(1)：140-145,6.DOI:10.16403/j.cnki.ggjs20250127
小半径曲线双层钢混组合连续梁顶推及安装施工工艺
Jacking and Erection Technology of Small-Radius Curved Double-layer Continuous Girder Made of Steel and Concrete
徐纪洋 1范彦春2
作者信息
- 1. 中交三航局第二工程有限公司,上海 200122
- 2. 中交第三航务工程局有限公司,上海 200032
- 折叠
摘要
Abstract
The construction of Qingshuitang Bridge was selected to study the jacking and installation technology of small radius curve double-layer continuous girder made of steel and concrete.A three-way hydraulic jack was laid out and remained tangent to the central axis of main steel girder.The curved girder was jacked asynchronously subject to the inner and outer arcs with the stroke of 50 cm and 51 cm respectively,and the deviation adjustment was carried out every 4 times.A hanger with the rated lifting weight of 20 t was design,which could travel on the bridge.Its application solved the difficulty in the erection of lower-layer pedestrian-bicycle bridge with wide steel girder.The calculation results also showed the maximum support force of 929.3 t during the lowering of girder.The temporary support pier made of the steel pipe piles with reinforced ribs was designed to complete by stages an overall lowering of double-layer continuous girder made of steel and concrete.关键词
双层组合梁/曲线顶推/下层人非桥/整体落梁Key words
double-layer composite girder/curved jacking/lower-layer pedestrian-bicycle bridge/overall lowering of girder分类
交通工程引用本文复制引用
徐纪洋,范彦春..小半径曲线双层钢混组合连续梁顶推及安装施工工艺[J].港口航道与近海工程,2025,62(1):140-145,6.
