| 巷道裂隙岩体的损伤参数辨识 |
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| 引用本文： | 王华宁,吕爱钟,曹志远. 巷道裂隙岩体的损伤参数辨识[J]. 岩土工程学报, 2001, 23(5): 593-597 |
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| 作者姓名： | 王华宁 吕爱钟 曹志远 |
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| 作者单位： | 同济大学工程力学与技术系固体力学教育部重点实验室!上海200092；山东科技大学土木工程学院!山东泰安271019； |
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| 摘 要： | 基于位移反分析理论及几何损伤理论 ,对巷道裂隙岩体的损伤参数进行了辨识。根据岩体中裂隙组数的不同 ,对于含一组裂隙、两组裂隙及多组裂隙情况下损伤参数辨识可靠性问题进行了分析 ,给出了精确辨识的参数组合。针对初值选取对某些参数的辨识精度影响较大的特点 ,采用蒙特卡罗优化法进行初值的优选 ,计算结果显示 ,优选初值下的辨识可靠性有很大提高
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| 关 键 词： | 裂隙岩体 损伤 参数辨识 位移反分析 |
| 文章编号： | 1000-4548(2001)05-0593-05 |
| 修稿时间： | 2000-11-27 |
Damage parameter identification of joint rock mass in underground opening |
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| WANG Huaning,LU Aizhong,CAO Zhiyuan. Damage parameter identification of joint rock mass in underground opening[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(5): 593-597 |
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| Authors: | WANG Huaning LU Aizhong CAO Zhiyuan |
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| Affiliation: | 1.Key Laboratory of Solid Mechanics of MEO Dep. of Engineering Mechanics Tongji University Shanghai 200092 China 2.Institute of Civil Engineering Shandong University of Science and Technology |
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| Abstract: | Based on the theory of displacement back analysis and the theory of geometrical damage, identification of damage parameters in joint rock mass is studied in this paper. The identification reliability of different parameters is discussed respectively according to the different number of crack group contained in the rock mass. Then the parameter combinations with high accuracy are obtained. For the cases in which the initial values have great effect on the accuracy of the result, Monte Carlo method is used to optimize the initial values,and the result shows that identification precision is improved greatly. |
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| Keywords: | joint rock mass damage parameter identification back analysis |
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