| 水工薄壁混凝土结构温控参数的敏感性分析 |
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| 引用本文： | 王振红,张国新,于书萍,刘有志.水工薄壁混凝土结构温控参数的敏感性分析[J].武汉理工大学学报(交通科学与工程版),2010,34(2):280-284. |
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| 作者姓名： | 王振红 张国新 于书萍 刘有志 |
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| 作者单位： | 1. 中国水利水电科学研究院结构材料所,北京,100038
2. 湖北省水利水电勘测设计院北京分院,北京,100055 |
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| 基金项目： | 国家自然科学基金项目资助(批准号:50909105) |
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| 摘 要： | 针对薄壁混凝土结构特点以及施工期易产生裂缝问题,阐述了温度应力是产生这类裂缝的主要原因,认为表面保温厚度、内部水管水温和浇筑温度是影响结构温度场应力场的主要因素.以实际工程为依托,结合混凝土温度场应力场的基本原理和水管冷却的精确算法,运用三维有限单元法对温控参数保温板厚度、水管水温和浇筑温度进行了敏感性分析,得出了不同温控参数的影响程度和特性.
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| 关 键 词： | 薄壁混凝土结构 敏感性分析 温控参数 水管冷却 温度场 |
Sensitivity Analysis of Temperature Control Parameters for Thin-walled Hydraulic Structure |
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| Wang Zhenhong,Zhang Guoxin,Yu Shuping,Liu Youzhi.Sensitivity Analysis of Temperature Control Parameters for Thin-walled Hydraulic Structure[J].journal of wuhan university of technology(transportation science&engineering),2010,34(2):280-284. |
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| Authors: | Wang Zhenhong Zhang Guoxin Yu Shuping Liu Youzhi |
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| Institution: | Department of Structures and Materials/a>;China Institute of Water resourcesand Hydropower Research/a>;Beijing 100038/a>;China;Hubei Institute of Water Conservancy & Hydroelectric Engineering Exploration & Design Beijing Branch/a>;Beijing 100055/a>;China |
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| Abstract: | In view of the character of thin-walled concrete structure and the problem of concrete crack in the period of construction,this paper introduces the thermal stress which is the main cause of crack and puts forward the main factors influencing the thermal field and stress field of concrete structure,for example,the thickness of surface insulation plates,the temperature of internal pipe water and placement temperature.A case is presented where the 3-D FEM with the numerical algorithm of pipe cooling is adopte... |
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| Keywords: | thin-walled concrete structure sensitivity analysis temperature control parameters water pipe cooling temperature field |
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