- 摘 要
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(北京维拓时代建筑设计有限公司,北京100025)
[摘要] 某框架-剪力墙结构地上长度接近100m,没有设置伸缩缝,在施工阶段温差的变化对结构构件内力会产生很大的影响。通过MIDAS/Gen软件对整体结构进行施工阶段温度作用分析,得出结构整体变形规律及各层结构构件在温度荷载作用下的应力变化。同时对温度应力较大部位的构件,按考虑温度作用的荷载组合进行内力设计,并在设计及施工中采取一些防裂措施。
[关键词] 超长结构;温度应力;防裂措施
中图分类号:TU375 文献标识码:A 文章编号:
作者简介:于燕华,高级工程师, Email:yuyanhua@vtjz.com。
Analysis of the temperature stress of super-length structure of a building
Yu Yanhua
(Beijing Victory Star Architectural & Civil Engineering Design Co., Ltd, Beijing 100025,China)
Abstract: Without contraction joint, the temperature deformation during construction will huge since the length of a frame-shear wall structure is about 100 meters. By using MIDAS/Gen to analyze the process of temperature effect and find how the structure deformed and how the stress of each layer changed. Thus, the critical members of temperature deformation can be find out and design them with temperature load combinations and then apply some crack control measures on them during construction.
Keywords: super-length structure; temperature stress; crack control measure
参 考 文 献
[1] GB50009—2012建筑结构荷载规范[S].北京:中国建筑工业出版社,2002.
[2] 王铁梦.工程结构裂缝控制[M].北京:中国建筑工业
出版社, 1997.
[3] DB21/T1745—2009 地下混凝土结构防裂技术措施[S].沈阳:辽宁科学技术出版社,2009.