| 水工混凝土结构施工期冻融破坏仿真模拟 |
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| 引用本文： | 郭利霞,罗国杰,钟 凌,陈守开.水工混凝土结构施工期冻融破坏仿真模拟[J].农业工程学报,2012,28(18):82-87. |
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| 作者姓名： | 郭利霞 罗国杰 钟 凌 陈守开 |
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| 作者单位： | 华北水利水电学院,郑州,450011 |
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| 基金项目： | 国家自然科学基金资助项目（50539010，51109081） |
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| 摘 要： | 在水工混凝土长期施工过程中,冻胀是导致混凝土裂缝产生和发展的因素之一。本文在前人研究基础之上,通过分析混凝土冻融特性,提出了随龄期变化的力学特性模型,并利用三维有限元仿真计算程序,对混凝土施工期可能产生的冻融破坏过程进行数值模拟,计算结果与实际冻胀开裂规律一致,故该研究可为工程施工过程设计提供理论依据。
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| 关 键 词： | 仿真模拟 混凝土建筑物 设计 冻融 |
| 收稿时间： | 2012/3/18 0:00:00 |
| 修稿时间： | 2012/7/21 0:00:00 |
Simulation study on freeze-thaw damage of hydraulic concrete in construction period |
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| Guo Lixi,Luo Guojie,Zhong Ling and Chen Shoukai.Simulation study on freeze-thaw damage of hydraulic concrete in construction period[J].Transactions of the Chinese Society of Agricultural Engineering,2012,28(18):82-87. |
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| Authors: | Guo Lixi Luo Guojie Zhong Ling and Chen Shoukai |
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| Institution: | (North China University of Water Conservancy and Electric Power,Zhengzhou 450011,China) |
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| Abstract: | During the long construction of hydraulic concrete, frost heave is one of the key factors which can result in concrete crack .Based on the previous studies and the analysis on freeze-thaw characteristics of concrete, new models for predicting elasticity coefficient and tensile strength with changes of age and freezing times were proposed. With the application of the 3-d finite element program, the process of frost heave damaging of concrete during construction period were simulated. Results showed that the calculated results had a good coincidence with the actual rules of crack. This research provides a useful reference for concrete projects. |
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| Keywords: | computer simulation concrete construction design freeze-thaw |
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