大跨度异形钢桁架安装过程试验研究及实时监控
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苗吉军1,2,侯晓燕1,王典武1,刘延春1,白小军2(1 青岛理工大学土木工程学院, 青岛 266033; 2 甘肃省建设投资(控股)集团总公司, 兰州 730050)[摘要]大跨度空间结构施工过程是一个因结构体系未成型而引起的复杂变化过程。以甘肃省国际会展中心大跨度异形钢桁架项目安装过程为研究背景,通过ANSYS进行数值建模分析确定最优吊装方案,采用DH3819无线静态应变测试系统测试钢桁架主要受力构件的应力\|应变状态,利用自主编制的数值模拟软件实现对大跨度异形钢桁架安装过程的联机控制,为优化施工方案和指导施工过程管理提供了直观的决策工具。[关键词]大跨度空间结构; 施工监测; 数值分析; 计算机仿真中图分类号:TU393.3文献标识码:A文章编号:1002848X(2013)06002206Experimental research and real\|time monitoring on construction process oflarge span deformed steel trussMiao Jijun1,2, Hou Xiaoyan1, Wang Dianwu1, Liu Yanchun1, Bai Xiaojun2(1 School of Civil Engineering, Qingdao Technological University, Qingdao 266033, China;2 Gansu Construction Investment (Holdings) Group Corporation, Lanzhou 730050, China)Abstract:The construction process of large span spatial steel truss is very complicated because of the unformed structural system with in\|time dependent. Based on numerical analysis of ANSYS, the optimal loading plan was determined for the large span spatial steel truss of Gansu Convention and Exhibition Center. Experiment on stress\|strain relationships was undertaken by equipment of data record with wireless system named DH3819 in the field for construction process of the large span spatial steel truss. The simulation software compiled by author was used to realize the on\|line controlof large span deformed steel truss installation process, which can provide an intuitive decision\|making tool for optimizing construction plan and guiding construction process management.Keywords:large span spatial structure; construction monitoring; numerical analysis; computer simulation*甘肃省建设投资(控股)集团总公司和甘肃省科学技术厅项目(090GKCA045)。作者简介:苗吉军,博士,教授,Email:msyu_990421@sina.com。参考文献[1]董石麟.我国大跨度空间钢结构的发展与展望[J].空间结构, 2000, 6(2):3\|13.[2]CUO C, DANINEL A. Long\|span roof structures [J]. Modern Steel Construction, 1994, 34(5):46\|50.[3]GB 50017—2003 钢结构设计规范[S].北京:中国计划出版社,2003.[4]吴晓涵.面向对象结构分析程序设计[M]. 北京:科学出版社,2002.[5]苗吉军,顾祥林.地震作用下砌体结构倒塌反应的数值模拟计算分析[J].土木工程学报,2005,38(9):45\|52.[6]顾祥林,孙飞飞.混凝土结构的计算机仿真[M]. 上海: 同济大学出版社, 2002.[7]杜风山,朱光明.OpenGL在可视化有限元图形结果处理系统开发中的应用[J].计算机辅助设计与图形学报,2003,15(12):1554\|1557.