摘要
驻马店青少年宫科技馆工程共享大厅屋面钢结构采用双层异形悬挑桁架结构,最大悬挑长度30 m,最大高度13 m。施工过程中,通过模拟分析、数据监测、施工控制,介绍大跨度重载悬挑桁架的关键卸载技术。采用分级逐步的卸载方式对其下挠值进行实时动态监测,分析对相邻桁架产生的变形影响。在卸载过程中,悬挑结构的挠度变化在设计规范可控范围之内,满足成型精度要求,为类似工程提供了借鉴。
The roof steel structure of the sharing Hall of Zhumadian Youth Palace Science and Technology Museum adopts doublelayer special-shaped cantilever truss structure,with the maximum cantilever length of 30 m and the maximum height of 13 m.In the process of construction,through simulation analysis,data monitoring and construction control,the key unloading technology of largespan heavy-duty cantilever truss is introduced. The method of unloading step by step is used to monitor the deflection value in real time and analyze the deformation effect on adjacent truss. In the unloading process,the deflection of the cantilever structure is within the controllable range of the design code,which meets the requirements of forming accuracy and provides experience for similar projects.
作者
戴超虎
石明飞
何杰
张卓
饶明
Dai Chao-hu;Shi Ming-fei;He Jie;Zhang Zhuo;Rao Ming
出处
《建筑技术开发》
2020年第24期10-12,共3页
Building Technology Development
关键词
大跨度
悬挑桁架
卸载
挠度
数据监测
large span
cantilever truss
unloading
deflection
data monitoring
