| 基于旋转块体集的深埋条形锚板上限分析 |
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| 引用本文： | 黄茂松,余生兵.基于旋转块体集的深埋条形锚板上限分析[J].岩土工程学报,2011,33(5):685. |
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| 作者姓名： | 黄茂松 余生兵 |
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| 作者单位： | 1. 同济大学地下建筑与工程系，上海 200092；2. 岩土及地下工程教育部重点实验室，上海 200092 |
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| 基金项目： | 国家杰出青年科学基金项目(50825803); 上海市优秀学科带头人计划项目(09XD1403900) |
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| 摘 要： | 提出一种基于旋转块体集的极限分析上限方法，该方法以由多个三角形楔块所组成的旋转块体集为基本单元，通过旋转块体集的组合来构造所求问题的运动许可速度场。首先推导了旋转块体集的内能耗散和重力做功，然后运用旋转块体集对不排水黏土中深埋条形锚板的抗拔承载力进行了分析，计算结果表明：深埋条形锚板的抗拔承载力系数上限解与锚板在土体中的埋置方位无关，均为11.42。本文上限解比极限分析有限元所得上限解更为精确，而且求解所得破坏面较极限分析有限元更为清晰直观，从而验证了本文方法的优越性。
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| 关 键 词： | 极限分析 旋转块体集 锚板 抗拔承载力 黏土 |
Upper bound analysis of deep strip anchor based on rotational block set |
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| HUANG Mao-song,YU Sheng-bing.Upper bound analysis of deep strip anchor based on rotational block set[J].Chinese Journal of Geotechnical Engineering,2011,33(5):685. |
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| Authors: | HUANG Mao-song YU Sheng-bing |
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| Affiliation: | 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Shanghai 200092, China; |
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| Abstract: | A novel method for constructing kinematically admissible velocity fields in the upper bound limit analysis is introduced.It is based on rotational block set,which is formed by a number of triangular wedges,and the construction of admissible velocity fields can be simplified to a combination of several rotational block sets.An application to the upper bound analysis of deep strip anchor in undrained clay is given to illustrate the utility and effectiveness of the proposed method,and include detailed comparis... |
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| Keywords: | limit analysis rotational block set anchor pull-out capacity clay |
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