136m高空悬挑钢平台有限元分析及监测技术应用  

The Application of Finite Element Analysis and Monitoring Technology of High Steel Cantilever Platform with 136m Length

作　　者：李清超[1] 徐晓晖[1] 陈刚[1] 邵先锋[1] 

机构地区：[1]中建八局第三建设有限公司,江苏南京210046

出　　处：《施工技术》2017年第5期137-140,共4页Construction Technology

摘　　要：为满足南京金融城4号楼148.95m以上悬挑结构的需要,在135.90m处安装以钢桁架为主要受力结构的高空悬挑钢平台作为临时操作平台。在施工中,根据工况进行有限元分析得出轴力、应力及悬挑端挠度,针对性地进行型钢平台桁架上下弦杆、腹杆的内力和平台端部位移实际监测。通过对模拟值、实测值以及"半实测半计算值"等多种数据的比较分析,验证了有限元模型,同时验证了端部位移"半实测半计算值"的合理性。High steel cantilever platform as temporary operating platform is installed in 135. 90 m position where steel truss is main force structure in order to meet the requirement of cantilever structure on the top of 148. 95 m high for Nanjing Financial City No. 4 building. The axial force,stress and deflection at cantilever end are achieved by finite element analysis according to condition in construction,the topbottom chord of section steel platform truss,the internal force of web member and the displacement at platform end are monitored. Compared with simulation values,measured values and measured-calculated values,finite element model is verified,meanwhile,the rationality of measured-calculated values of end displacement is verified.

关 键 词：钢桁架 监测 应变 位移控制 有限元分析 

分 类 号：TU974[建筑科学—建筑技术科学]