| 混凝土坝安全评估的有限元全程仿真与强度递减法 |
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| 引用本文： | 朱伯芳. 混凝土坝安全评估的有限元全程仿真与强度递减法[J]. 水利水电技术, 2007, 38(1): 1-6 |
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| 作者姓名： | 朱伯芳 |
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| 作者单位： | 中国水利水电科学研究院,北京,100038 |
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| 基金项目： | 中国工程院咨询项目;国家自然科学基金;国家自然科学基金 |
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| 摘 要： | 文献[1,2]中首先提出了混凝土坝安全评估的有限元全程仿真与强度递减法,简称SR方法。笔者将进一步系统地阐述SR方法的基本原理、合理性和良好应用前景。首先指出混凝土坝安全评估必须满足的3个基本原则,即荷载与应力状态符合实际、材料破坏准则和本构关系符合实际,以及强度参数符合实际,SR方法可以完全满足这3个原则。然后指出,SR方法可以实现混凝土坝安全评估的6个统一,即:应力分析和稳定分析方法的统一;拉、压、剪等各种破坏形式分析的统一;坝体分析和基础分析的统一;正分析与反分析的统一;施工期分析与运行期分析的统一;设计、施工、运行各阶段评估方法的统一。采用SR方法对混凝土坝进行安全评估,有可能避免许多混凝土坝事故,提高坝的安全度,具有良好的应用前景。
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| 关 键 词： | 混凝土坝 安全评估 有限元 全过程仿真 强度递减 |
| 文章编号： | 1000-0860（2007）01-0001-06 |
| 修稿时间： | 2006-10-13 |
Finite element whole course simulation and sequential strength reduction method for safety appraisal of concrete dams |
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| ZHU Bo-fang. Finite element whole course simulation and sequential strength reduction method for safety appraisal of concrete dams[J]. Water Resources and Hydropower Engineering, 2007, 38(1): 1-6 |
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| Authors: | ZHU Bo-fang |
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| Affiliation: | China Institute of Water Resources and Hydropower Research, Beijing 100038, China |
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| Abstract: | The finite element whole course simulation and sequential strength reduction method for safety appraisal of concrete dams, called SR method for short, is explained in this paper. The true stress state of dam and foundation is given by the finite element simulation of whole course of dam construction, from excavation of rock foundation to the end of dam concreting and grouting of joints, then the safety factor is computed by sequential strength reduction FEM. The accuracy of safety appraisal of concrete dams will be raised by the application of SR method. |
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| Keywords: | concrete dam safety appraisal finite element whole course simulation sequential strength reduction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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