某地下车站顶板裂缝原因分析  

Analysis of Cracks in the Roof of an Underground Station

作　　者：郑家航 Zheng Jiahang(Fujian Construction Research Engineering Testing Co.Ltd.,Fuzhou,Fujian 350007)

机构地区：[1]福建省建研工程检测有限公司,福建福州350007

出　　处：《江西建材》2021年第8期58-59,61,共3页Jiangxi Building Materials

摘　　要：以某地下车站混凝土顶板梁、板构件开裂为实例,通过对裂缝进行调查、检测、模拟分析,并结合简化后的力学模型计算及有限元计算对产生裂缝的原因进行分析探讨,从而得出结论本工程裂缝为温度-收缩裂缝,顶板在温度变化及混凝土早期收缩所产应力的综合作用下产生开裂,可供同类型工程参考。Taking the crack of concrete roof girder and slab member of an underground station as an example, the causes of cracks are analyzed through investigation, detection and simulation analysis, combined with simplified mechanical model calculation and finite element calculation. It is concluded that the crack in this project is temperature-shrinkage crack, and the roof cracks under the combined action of temperature change and early shrinkage stress of concrete, which can be used for reference in similar projects.

关 键 词：温度应力 温度-收缩裂缝 跳仓法施工 地下结构 裂缝分析 

分 类 号：TU528[建筑科学—建筑技术科学]