| 超大跨径钢桁架系杆拱桥合龙施工控制技术 |
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| 引用本文： | 芶洁,周仁忠. 超大跨径钢桁架系杆拱桥合龙施工控制技术[J]. 中国港湾建设, 2010, 0(2): 65-69 |
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| 作者姓名： | 芶洁 周仁忠 |
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| 作者单位： | 1. ,贵州交通职业技术学院,贵州,贵阳,550008
2. 中交第二航务工程局有限公司技术中心,长大桥梁建设施工技术交通行业重点实验室,湖北,武汉,430071 |
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| 摘 要： | 重庆朝天门长江大桥中跨采用先拱后梁架设方法，先主拱合龙，再刚性系杆合龙。对主桥建立有限元数值模型，对合龙工况进行敏感性分析，制定最佳合龙调整方案，分析合龙时各个物理参量（包括应力、线形、索力），深入阐述无应力合龙原理。主拱和刚性系杆均实现无应力合龙，可对同类桥梁施工和控制提供借鉴。
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| 关 键 词： | 朝天门长江大桥 钢桁架系杆拱桥 合龙 施工控制 有限元分析 |
Closure Construction Monitoring Technology of the Super Long-span Steel Tied-arch Truss Bridge |
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| GOU Jie,Zhou Ren-zhong. Closure Construction Monitoring Technology of the Super Long-span Steel Tied-arch Truss Bridge[J]. China Harbour Engineering, 2010, 0(2): 65-69 |
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| Authors: | GOU Jie Zhou Ren-zhong |
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| Affiliation: | 1. Guizhou Communications Polytechnic, Guiyang 550008, China; 2. Technology Center of CCCC Second Harbor Engineering Co., Ltd., Key Laboratory of Large-span Bridge Construction Technology, Ministry of Communications, Wuhan 430071, China ) |
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| Abstract: | In construction of Chaotianmen Yangtze River Bridge, the main arch was first erected and closured, then the Rigid Tied girders. By Finite element analysis, a sensitivity analysis of the closure conditions was accomplished, the best closure adjustment programs was developed, various physical parameters including stress, linear, cable force, and the detailed principle of non-stress-closure were analyzed. All main arches and rigid tied girders achieved non-stress-closure, it can give useful references to the construction and controlling of similar bridges. |
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| Keywords: | Chaotianmen Yangtze River Bridge steel tied-arch truss bridge closure construction monitoring finite element analysis |
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