南京长江五桥节段预制拼装波形钢腹板箱梁桥施工监控

作者:许盟 巫兴发 沈惠军 王江成 黄超
单位:中交第二航务工程局有限公司 中交公路长大桥建设国家工程研究中心有限公司 长大桥梁建设施工技术交通行业重点实验室 交通运输行业交通基础设施智能制造技术研发中心
摘要:以南京长江五桥中3座跨线引桥主梁为例,采用自适应几何控制法,基于有限元模拟得到主梁理论线形,并通过参数敏感性分析确定影响线形的关键因素。在此基础上,提出从波形钢腹板制造、预制到安装的全过程施工线形控制要点及控制措施。结合有限元模拟及现场实测,对比分析施工过程中节段预制拼装波形钢腹板箱梁的受力行为。
关键词:桥梁工程波形钢腹板箱梁拼装有限元分析线形控制应力监测
作者简介:许盟,工程师,E-mail:1012935056@qq.com。
基金:国家重点研发计划(2017YFC0703408)。 -页码-:35-39
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Construction Monitoring of Segmental Prefabricated Box Girder Bridge with Corrugated Steel Webs of the Fifth Nanjing Yangtze Bridge
XU Meng WU Xingfa SHEN Huijun WANG Jiangcheng HUANG Chao
(CCCC Second Harbour Engineering Co., Ltd. CCCC Highway Bridge National Engineering Research Center Co., Ltd. Key Laboratory for Construction Technology of Long Span Bridges, Ministry of Transport Research and Development Center of Transport Industry of Intelligent Manufacturing Technologies of Transport Infrastructure)
Abstract: Taking the main girder of the three overpass approach bridges of the Fifth Nanjing Yangtze Bridge as an example, the theoretical alignment of the main girder is obtained based on the finite element simulation with adaptive geometric control method, and the key factors affecting the alignment are determined through parameter sensitivity analysis. On this basis, the main points and control measures of the construction line shape control from the manufacturing, prefabrication and installation of corrugated steel webs are put forward. Combined with finite element simulation and field measurement, the force behavior of the segmental prefabricated and assembled corrugated steel web box girder during the construction process is compared and analyzed.
Keywords: bridges; corrugated steel web; box girders; pre-assembled; finite element analysis; linear control; stress monitoring
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