某超长混凝土结构温差效应分析及构造措施

张 坚，徐以纬，虞炜，杨必峰，路 岗(上海建筑设计研究院有限公司，上海 200041)

［摘要］杭州某项目地下室为双向超长结构，上部主楼为单向超长结构，温差收缩效应显著，一般构造措施难以满足要求。采用有限元方法对结构的温差收缩效应进行详细的分析，得到温度应力分布的规律及数值。在分析结果的基础上，对不同部位采取不同的对应措施，有效地解决了温差收缩效应带来的不利影响，对超大、超长混凝土结构设计有一定的参考价值。

［关键词］ 超长建筑；温差效应；温度应力；裂缝控制

中图分类号：TU318.8文献标识码：A文章编号：1002-848X(2011)01-0063-05

Analysis and details of temperature variation effects on an overlong concrete structure

Zhang Jian, Xu Yiwei, Yu Wei, Yang Bifeng, Lu Gang

(Shanghai Institute of Architectural Design & Research Co., Ltd., Shanghai 200041, China)

Abstract:An overlong concrete structure with a bilateral overlong basement was accompanied by significant temperature variation  and shrinkage effect, and the design demand could not be satisfied by common detailing methods. The temperature variation and shrinkage effects of the structure were analyzed in details by using finite element method, and the distribution of temperature stress was obtained. Based on the analysis results, different practical measures were used, which effectively reduced the negative results of temperature variation and shrinkage effects. The experience in this project could be a useful reference for similar mass and overlong concrete structures.

Keywords:overlong structure; temperature variation effect; temperature stress; crack control

作者简介：张坚，高级工程师，一级注册结构工程师，Email:zhangjian@siadr.com.cn。

参考文献

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