期刊论文

Research on the closing scheme of a long-span hybrid composite girder cable-stayed bridge

中文

交通科学与工程

1674-599X

2023

39

03

67-73

10.16544/j.cnki.cn43-1494/u.20210908001

国家自然科学基金资助项目(51878072) 湖南省科技创新计划资助项目(2020RC4049)。

本校为第一机构

为保证大跨径混合式叠合梁斜拉桥在中跨合龙过程中各构件的受力可以满足规范要求，以及成桥之后能达到理想成桥状态，以宜宾盐坪坝长江大桥为研究对象，考虑该桥的结构受力与施工特点，对桥梁合龙过程进行有限元分析，并分析在中跨合龙过程中的温度和合龙段主纵梁吊装方案对结构受力及成桥状态的影响。研究结果表明：温度主要影响合龙口的宽度和成桥后的塔偏，合龙段主纵梁的吊装方案主要影响合龙过程中的桥面板应力和成桥后的梁位移。该研究结果确保了该桥成功完成精准合龙，节约了施工成本，也为同类桥梁的合龙施工提供了参考。

In order to ensure that the force of each component of the long-span hybrid composite girder cable-stayed bridge can meet the requirements of the specification during the mid-span closing process and reach a ideal state after the bridge is completed,the Yanpingba Yangtz...MORE In order to ensure that the force of each component of the long-span hybrid composite girder cable-stayed bridge can meet the requirements of the specification during the mid-span closing process and reach a ideal state after the bridge is completed,the Yanpingba Yangtze River Bridge is taken as the research object.Consi...