| 混凝土初始损伤模拟和在混凝土重力坝抗震分析中的应用 |
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| 引用本文： | 徐俊祥,刘西拉.混凝土初始损伤模拟和在混凝土重力坝抗震分析中的应用[J].上海交通大学学报,2006,40(6):1038-1041. |
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| 作者姓名： | 徐俊祥 刘西拉 |
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| 作者单位： | 上海交通大学,土木工程系,上海,200240 |
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| 基金项目： | 国家重点基础研究发展规划(973)项目(2002CB412709) |
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| 摘 要： | 混凝土结构在外部载荷作用下的破坏过程是初始损伤不断演化发展和新的损伤不断形成的过程.通过试验确定了混凝土在浇注过程中形成的初始损伤,并据此对Jeeho Lee的塑性损伤模型进行了修正,然后利用该模型对乌江上某重力坝进行了地震作用下的动力损伤分析,并分别与不记入动水压力影响和不考虑应变率影响的结果进行了对比,所得结论对混凝土坝的震害研究有一定的参考价值.
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| 关 键 词： | 混凝土坝 动力损伤 初始损伤 应变率 |
| 文章编号： | 1016-2467(2006)06-1038-04 |
| 收稿时间： | 2005-08-01 |
| 修稿时间： | 2005年8月1日 |
The Simulation of Initial Concrete Damage and Its Application in Earthquake Analysis of Gravity Dams |
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| XU Jun-xiang,LIU Xi-la.The Simulation of Initial Concrete Damage and Its Application in Earthquake Analysis of Gravity Dams[J].Journal of Shanghai Jiaotong University,2006,40(6):1038-1041. |
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| Authors: | XU Jun-xiang LIU Xi-la |
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| Institution: | Dept. of Civil Eng. , Shanghai Jiaotong Univ. , Shanghai 200240, China |
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| Abstract: | The failure of concrete structure is caused by both the evolution of initial damages and the forming of new damages.The initial damage developed during the concrete-pouring was ascertained through(experiment),and then it was used to modify the Jeeho Lee plastic-damage model.The renewed model was used to evaluate the earthquake response of a gravity dam.The calculated result was compared to those without considering hydrodynamic interactions and strain rate,respectively.The conclusion is valuable for the earthquake analysis of dams. |
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| Keywords: | concrete dam dynamic damage initial damage strain rate |
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