摘要
大跨度钢管桁架结构空间形式复杂,各杆件相互作用。以西宁海湖体育馆为例,介绍了基于光纤光栅传感器和振弦传感器的健康监测技术在体育馆施工阶段的应用。阐述了健康监测系统的组成、监测方法、测点布置等。分析监测数据表明,在施工阶段,各关键杆件应力变化稳定,杆件内力远小于钢材的屈服强度,各测点的应力状态始终处于弹性工作状态,满足设计要求;各环位移监测数据变化稳定,结构刚度储备丰富,对西宁海湖体育馆在施工过程中的安全是一个重要评价指标。
Large-span steel pipe truss has complex spatial forms, whose members interact. Taking Xining Haihu Gymnasium for example, the application of healthy monitoring technology in gymnasium construction based on fiber Bragg grating sensor and the vibrating wire sensor is introduced. It expounds the composition, monitoring measure, monitoring points arrangement of healthy monitoring. The monitoring data show that during construction, key members＇ stresses are stable, and the internal forces are less than steel yield strength, which can meet design requirements. Meanwhile, each ring displacement monitoring data are stable, which is key evaluation index for Xining Haihu Gymnasium.
出处
《施工技术》
CAS
北大核心
2015年第2期54-57,共4页
Construction Technology
基金
国家自然科学基金项目(51278236)
国家科技支撑计划项目(2011BAK12B07)
关键词
体育馆
钢管桁架
监测
应力
变形
gymnasiums
steel pipe truss
monitoring
stresses
deformation
