| 大坝混凝土温度应力数值模拟 |
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| 引用本文： | 石南南,陈波,张辉,高培伟.大坝混凝土温度应力数值模拟[J].低温建筑技术,2009,31(2):40-42. |
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| 作者姓名： | 石南南 陈波 张辉 高培伟 |
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| 作者单位： | 1. 南京航空航天大学土木系,南京,210016
2. 南京水利科学研究院,南京,210016 |
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| 基金项目： | 国家自然科学基金，雅砻江水电开发联合研究基金 |
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| 摘 要： | 为了模拟大坝混凝土早期内部温度变化和应力发展，本文建立了大坝混凝土在半绝热条件下的早期温度场模型，并在此模型基础上考虑自生体积变形和徐变来建立应力场模型；对比温度应力曲线与强度发展曲线，计算出混凝土开裂敏感度。通过模型计算值跟试验结果的对比，证明该模型可以用来验证温度应力试验机试验结果，具有合理性；故该数值模型可以验证由温度应力试验得到的混凝土综合抗裂指标。
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| 关 键 词： | 温度-应力 数值模拟 温度场 应力场 |
NUMERICAL SIMULATION OF TEMPERATURE STRESS IN DAM CONCRETE |
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| SHI Nan-nan,CHEN Bo,ZHANG Hui,GAO Pei-wei.NUMERICAL SIMULATION OF TEMPERATURE STRESS IN DAM CONCRETE[J].Low Temperature Architecture Technology,2009,31(2):40-42. |
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| Authors: | SHI Nan-nan CHEN Bo ZHANG Hui GAO Pei-wei |
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| Affiliation: | Civil Engineering Department of Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China |
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| Abstract: | To simulate the rule of temperature development and stress development of dam concrete,model of the early concrete temperature field and a stress field model considering autogenous volume deformation and creep effect at semi-adiabatic conditions is established.By the comparative analysis of temperature stress curve and the strength development rule,the cracking sensitivity of concrete was calculated.It is revealed that this calculated value anastomosed with the test results on the Concrete Temperature-Stres... |
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| Keywords: | temperature-stress numerical simulation temperature field stress field |
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