| 弹性地基上重力坝坝踵界面裂缝断裂可靠度分析 |
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| 引用本文： | 董耀星,周鸿钧,王博.弹性地基上重力坝坝踵界面裂缝断裂可靠度分析[J].郑州大学学报(工学版),1992(3). |
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| 作者姓名： | 董耀星 周鸿钧 王博 |
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| 作者单位： | 郑州工学院水环系，郑州工学院水环系，郑州工学院水环系 |
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| 基金项目： | 郑州工学院青年科研基金的资助 |
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| 摘 要： | 本文用特解边界元法及蒙特卡罗边界法计算了弹性地基上重力坝坝踵界面裂缝的断裂可靠度,找出了断裂韧度的均值是影响坝踵界面裂缝可靠度的主要因素,同时指出:区分裂缝的类型对断裂可靠度计算来说是十分重要的。文中还定量分析了地基刚度对裂缝断裂可靠度的影响。计算结果表明:地基刚度对裂缝断裂可靠度的影响甚大,不可忽视。计算还表明:扬压力对断裂可靠性来说仍是一种极为不利的因素。
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| 关 键 词： | 可靠度分析 重力坝 界面裂缝 断裂 地基 |
Reliability Analysis of Interfacial Crack at the Heel of Gravity Dam Based on Elestic Foun Dation |
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| Dong Yaoxing Zhou hongjun Wang bo.Reliability Analysis of Interfacial Crack at the Heel of Gravity Dam Based on Elestic Foun Dation[J].Journal of Zhengzhou University: Eng Sci,1992(3). |
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| Authors: | Dong Yaoxing Zhou hongjun Wang bo |
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| Affiliation: | Zhengzhou Institute of Technology |
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| Abstract: | Particular solusion Boundary Element Method and Monte Carlo Boundary Method are combined in this paper to calculate the fracture reliabilities of a gravity dam with an interfacial crack at the heel of the dam.Through the calculation,it is found that the mean value of fracture toughness is the main factor that affects the fracture reliability.It is also pointed out that the type of the heel-crack(press-shear or tension-shear)is of necessity and importance for the determination of fracture reliability. The influence of the stiffness of the foundation rock on fracture reliability is also ana- lyzed.Results show that this influence is complex and obvious,which should not be neglected in the fracture reliability analysis of gravity dams on rock foundation. Results also show that,for the frature reliability of gravity dam,uplife remains a very unfavorable factor. |
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| Keywords: | Reliability Analysis Gravity Dam Interfacial crack Fracture Foundation |
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