摘要
悬挑钢结构施工过程中的一个重要环节是体系转换施工,这很大程度上决定了施工安全性和构件安装精度。采用有限元软件MIDAS对杭州西湖苹果旗舰店的施工全过程进行数值模拟,基于分析结果确定结构在各施工阶段下的应力与变形最大截面位置,并在施工过程中进行重点监测。结果表明:有限元模型能够较好地模拟该结构在各施工阶段下的受力状态,并且有助于评判现场监测数据的准确性和有效性。通过计算分析与现场监测,确保了结构在整个施工过程中的应力和变形始终处于容许范围之内。
Structural system transition,on which construction safety and accuracy mainly depend,is the most important one of construction stages for cantilever steel structures. The finite element software MIDAS was employed to numerically simulate the construction process of the Apple＇s flagship store in Westlake,Hangzhou. Critical locations where sectional stresses and deflections are remarkable were verified on the basis of simulation results,and strain gauges and displacement meters used for onsite monitoring were then arranged at those locations. Results show that numerical simulation provides a good prediction of structural responses for all construction stages and is helpful in evaluating the validity of monitoring data during the construction process. By simultaneously introducing numerical simulation and onsite monitoring,the sectional stresses and vertical deflections not exceeding allowable values can be confirmed during the construction process.
出处
《施工技术》
CAS
北大核心
2016年第8期92-96,共5页
Construction Technology
基金
上海交通大学晨星青年学者奖励计划项目(14X100010053)
青浦区-交通大学产学研合作项目
关键词
钢结构
悬挑
施工
体系转换
数值模拟
监测
steel structures
cantilever
construction
system transition
simulation
monitoring
