| 碾压混凝土重力坝的广义损伤可靠度及敏感性 |
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| 引用本文： | 王亚军,张我华,张楚汉,金峰. 碾压混凝土重力坝的广义损伤可靠度及敏感性[J]. 土木建筑与环境工程, 2011, 33(1): 77-86 |
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| 作者姓名： | 王亚军 张我华 张楚汉 金峰 |
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| 作者单位： | 清华大学 水沙科学与水利水电工程国家重点实验室, 北京 100084;浙江海洋学院船舶与建筑工程学院, 浙江 舟山 316000;;浙江大学 软弱土与环境土工教育部重点实验室, 杭州 310027;清华大学 水沙科学与水利水电工程国家重点实验室, 北京 100084;清华大学 水沙科学与水利水电工程国家重点实验室, 北京 100084 |
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| 基金项目： | 国家自然科学基金资助项目(50379046);教育部博士点基金资助项目(A50221) |
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| 摘 要： | 为深化模糊随机损伤力学研究,基于自适应模糊随机损伤力学模型,对材料裂纹尖端广义损伤应力场进行分析,证实了数值模型的可靠性.以碾压混凝土重力坝为例,并考虑材料参数空间变异,就模糊随机损伤增益下的宏观场分布做敏感性研究,结果表明,碾压混凝土抗压强度极限值是影响大坝安全的主控指标.采用不同模糊分布对自适应损伤力学模型做激励分...
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| 关 键 词： | 碾压混凝土重力坝 模糊激励 模糊随机损伤模型 敏感性 |
Generalized Damage Reliability and Sensitivity Analysis on Rolled-Concrete Gravity Dam |
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| WANG Ya-jun,ZHANG Wo-hu,ZHANG Chu-han and JIN Feng. Generalized Damage Reliability and Sensitivity Analysis on Rolled-Concrete Gravity Dam[J]. Journal of Civil,Architectrual & Environment Engineering, 2011, 33(1): 77-86 |
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| Authors: | WANG Ya-jun ZHANG Wo-hu ZHANG Chu-han JIN Feng |
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| Affiliation: | State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing 100084, P. R. China;School of Naval Architecture and Civil Engineering, Zhejiang Ocean University, Zhoushan 316000, Zhejiang,P. R. China;Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University, Hangzhou 310027, P. R. China;State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing 100084, P. R. China;State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing 100084, P. R. China |
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| Abstract: | Based on fuzzy self-adapting stochastic damage model, the characteristics of generalized damage stress field on material crack tip are studied. The results express that the numerical algorithm is reliable. Sensitivity of rolled-concrete gravity dam under fuzzy-stochastic damage gaining is implemented by considering the spatial variation of material parameters. It is found that the compression strength of rolled-concrete is the governing index on gravity dam reliability. The activation simulations on fuzzy self-adapting stochastic damage model were carried by adopting different fuzzy distributions, which indicated the governing characteristics of the distribution on generalized damage evolution of rock-like material. |
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| Keywords: | rolled-concrete gravity dam fuzzy activation simulation fuzzy self-adapting stochastic damage model sensitivity |
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