| 寒区水库护坡冰冻破坏问题中的断裂力学分析 |
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| 引用本文： | 刘晓洲,刘鹏,李洪升.寒区水库护坡冰冻破坏问题中的断裂力学分析[J].冰川冻土,2010,32(3). |
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| 作者姓名： | 刘晓洲 刘鹏 李洪升 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,冻土工程国家重点实验室,甘肃,兰州,730000;大连大学,辽宁省高校复杂结构体系灾害预测与防治重点实验室,辽宁,大连,116622;大连大学,辽宁省高校复杂结构体系灾害预测与防治重点实验室,辽宁,大连,116622 |
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| 基金项目： | 国家自然科学基金，中国科学院冻土工程国家重点实验室开放基金，辽宁省高等学校科研计划项目 |
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| 摘 要： | 寒区水库护坡冬季常常会在低气温和低温环境的共同作用而产生冰冻破坏,进而影响其发挥正常的作用,甚至会使其完全失去作用.结合团结水库的实际工程问题,在传统分析、计算方法的基础上将断裂力学引入进来,从断裂力学的角度分析了该水库护坡产生冰冻破坏的主要原因有三大因素:冰推、冻胀和浪淘,其中冰推和冻胀起控制作用,浪淘起辅助作用.根据冰冻破坏原因分析,提出了钢筋混凝土护坡板的设计方案,并对其进行了抗冰推、抗冻胀破坏的验算校核,结果证明:该计算方法和设计方案完全能够使寒区水库护坡达到抵抗冰冻破坏的目的.为解决寒区平原水库护坡抗冰冻破坏问题提出了新的思路,进行了有意义的探索.
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| 关 键 词： | 护坡 断裂力学 低温环境 冰压力 |
Application of Fracture Mechanics to Analyze Frost Breakage of Reservoir Revetments in Cold Regions |
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| LIU Xiao-zhou,LIU Peng,LI Hong-sheng.Application of Fracture Mechanics to Analyze Frost Breakage of Reservoir Revetments in Cold Regions[J].Journal of Glaciology and Geocryology,2010,32(3). |
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| Authors: | LIU Xiao-zhou LIU Peng LI Hong-sheng |
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| Institution: | LIU Xiao-zhou1,2,LIU Peng2,LI Hong-sheng2(1.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu730000,China,2.Key Laboratory for Prediction and Control on Complicated Structure System of the Education Department of Liaoning Province,Dalian University,Dalian Liaoning116622,China) |
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| Abstract: | Under the combined effect of low-tem-perature and cryogenic environment,reservoir re-vetment often suffers from frost damage in winter,and then is unable to work properly,even become invalid completely.In this paper,practical engi-neering problems in the Tuanjie Reservoir are con-sidered,and fracture mechanics are brought to cal-culate and analyze quantitatively the frost breakage on the base of traditional methods of analysis and calculation.From the viewpoint of fracture me-chanics,there are three main fa... |
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| Keywords: | reservoir revetment fracture mechanics low temperature ice pressure |
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