某钢结构连续梁拱组合体系桥的施工监控研究  

Research on Construction Monitoring of a Steel Structure Continuous Beam Arch Composite System Bridge

作　　者：王加勇 王永 王立群 杜岳丹 赵新铭[2] 张剑[2] 汪锋[3] WANG Jiayong;WANG Yong;WANG Liqun;DU Yuedan;ZHAO Xinming;ZHANG Jian;WANG Feng(STECOL Corporation,Tianjin 300384,China;Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Jiangsu Yangtze River Bridge Stock Co.,Ltd.,Nanjing 214521,China)

机构地区：[1]中国电建市政建设集团有限公司,天津300384 [2]南京航空航天大学,江苏南京210016 [3]江苏扬子大桥股份有限公司,江苏南京214521

出　　处：《新技术新工艺》2020年第11期57-61,共5页New Technology & New Process

基　　金：中国电力建设股份有限公司科技项目(KJ-2019-032)。

摘　　要：某连续梁拱组合体系桥的施工方案为下部结构现场浇筑,钢梁和钢拱在工厂预制及现场支架拼装,拱肋合龙后拆除其支架,按照无应力状态控制法进行吊杆安装,先边跨后中跨、先中间后两侧的顺序拆除主梁支架,测量索力并对索力进行调整。通过ANSYS中的“单元生死”技术,将成桥状态下整体模型的所有单元按照施工步骤分别定义为不同的“单元组”,按照施工步骤来激活相应的单元组进行加载分析,从而达到模拟施工过程的目的。研究表明了提出的连续梁拱组合体系桥的施工方案的可行性和合理性,可供同类桥梁的施工参考。The construction scheme of a continuous beam arch composite system bridge was to cast the substructure on site,the steel beam and steel arch were prefabricated in the factory and assembled on site,the support was removed after the arch rib was closed.The suspender was installed according to the non-stress state control method,the main beam support was removed in the sequence of side span,middle span and both sides,and the cable force was measured and adjusted.Through the unit life and death technology in ANSYS,all units of the whole model under the completed bridge state were defined as different unit groups according to the construction steps,and the corresponding unit groups were activated for loading analysis according to the construction steps,so as to achieve the goal of simulating the construction process.The results showed that the construction scheme of continuous beam arch composite system bridge was feasible and reasonable,which could be used as reference for the construction of similar bridges.

关 键 词：钢结构 拱组合体系桥 施工监控 单元生死 

分 类 号：U441[建筑科学—桥梁与隧道工程]