| 轴对称变温下钢管混凝土平面应变问题解析解 |
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| 引用本文： | 任志刚,胡曙光. 轴对称变温下钢管混凝土平面应变问题解析解[J]. 华中科技大学学报(自然科学版), 2012, 40(8): 34-38 |
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| 作者姓名： | 任志刚 胡曙光 |
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| 作者单位： | 1. 武汉理工大学土木工程与建筑学院,湖北武汉,430070
2. 武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉,430070 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 为建立钢管混凝土膨胀性能设计目标,应用热弹性力学理论,推导得到了轴对称变温作用下钢管混凝土平面应变问题解析解,并进行了有限元分析;计算得到了钢管混凝土界面脱空间隙理论值、钢管膨胀混凝土的限制膨胀率与自由膨胀率的完全数学关系以及钢管混凝土自应力与自由膨胀率的理论关系;提出并推导得到了钢管混凝土自由膨胀率＂可行域＂.结果表明：理论解析解与有限元分析结果基本一致,验证了解析解的正确性.
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| 关 键 词： | 钢管混凝土 温度场 膨胀率 可行域 热弹性力学 有限元法 |
Plane strain analytical solutions to concrete-filled steel tube under axisymmetric variable temperature |
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| Ren Zhiganga Hu Shuguang. Plane strain analytical solutions to concrete-filled steel tube under axisymmetric variable temperature[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2012, 40(8): 34-38 |
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| Authors: | Ren Zhiganga Hu Shuguang |
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| Affiliation: | Ren Zhiganga Hu Shuguangb(a School of Civil Engineering and Architecture;b State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | Plane strain analytical solutions to CFST(concrete-filled steel tube) under axisymmetric variable temperature are derived in the framework of thermoelasticity theory in order to establish the design objective of expansion performance for CFST,and the finite element analysis is conducted.Based on the solutions,some theoretical expressions are obtained including the interface gap value,the relations between the restrained expansion rate and free expansion rate and the relations between the free expansion rate and self-stressing of CFST.And a feasible region of the free expansion rate of core concrete is also proposed and deduced.The results show that the theoretical analytic solutions agree well with the results of finite element method and the correctness of solutions are verified. |
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| Keywords: | concrete-filled steel tube temperature field expansion rate feasible region thermoelasticity finite element method |
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