| 考虑开裂约束的重力坝体型优化设计 |
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| 引用本文： | 祁顺彬,王向东. 考虑开裂约束的重力坝体型优化设计[J]. 长江科学院院报, 2008, 25(6): 106-109 |
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| 作者姓名： | 祁顺彬 王向东 |
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| 作者单位： | 南京交通职业技术学院,南京,211188;河海大学,工程力学系,南京,210098 |
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| 摘 要： | 实体重力坝由于剖面尺寸大，混凝土用量较多，在设计时要进行最优化设计以使坝型既安全又经济。然而重力坝在运行中，上游坝踵区往往会出现开裂,随着筑坝高度的增加，坝踵开裂的概率也会越来越大，但坝踵的开裂并不一定意味着坝体的毁坏，只要保证裂缝是稳定的，坝体仍能正常运行。基于这一情况，对重力坝考虑开裂约束下的体型优化设计进行了研究，引入断裂参数约束式，建立开裂约束条件下的优化设计数学模型。并通过对工程实例的优化计算分析得出了合理的坝体断面，优化效果比较理想。
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| 关 键 词： | 重力坝 开裂约束 应力强度因子 体型优化设计 |
Shape Optimization Design of Gravity Dam Considering Crack Constraint |
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| QI Shun-bin,WANG Xiang-dong. Shape Optimization Design of Gravity Dam Considering Crack Constraint[J]. Journal of Yangtze River Scientific Research Institute, 2008, 25(6): 106-109 |
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| Authors: | QI Shun-bin WANG Xiang-dong |
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| Affiliation: | QI Shun-bin1,WANG Xiangdong2(1.Nanjing Communications Institute of Technology.Nanjing 211188,China,2.Department of Engineering Mechanics,Hohai University,Nanjing 210098,China) |
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| Abstract: | Because of the large section size of the gravity dam,the volume of concrete expense is huge.How to optimize the dam shape to make it safaty and economy is a problem needed to be solved in design.However,when the gravity dam is working,the upstream heel area may appear cracks.With the enhancement of dam height,the probability of occurring cracks in the heel area is great.But the cracks in heel area don't mean the dam to be destroyed.The dam can work normally under the crack existence.In the paper,the form op... |
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| Keywords: | gravity dam crack constraint stress strength factor shape optimization design |
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