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| 引用本文： | 姜朋明,吕云霞,梅国雄. ??????????????????????[J]. 力学与实践, 2008, 30(5): 40-44. DOI: 10.6052/1000-0992-2007-267 |
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| 作者姓名： | 姜朋明 吕云霞 梅国雄 |
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| 作者单位： | 南京理工大学,江苏科技大学南京工业大学土木工程学院 210009 |
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| 摘 要： | 将有限元方法引入到塑性极限分析中，采用刚体有限元离散挡土墙后土体计算区域，同时构造运动许可速度场，在满足屈服条件、流动法则、虚功方程以及相应的边界条件的基础上，建立约束方程，引入数学规划方法求解挡土墙在不同变位模式下极限土压力分布. 算例说明了该方法的正确性和有效性.
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| 关 键 词： | 极限分析 上限定理 土压力 线性规划 刚体有限元 |
| 收稿时间： | 2007-06-20 |
| 修稿时间： | 2007-10-30 |
UPPER BOUND ANALYSIS OF EARTH PRESSURE ON RETAIN WALL USING RIGID FINITE ELEMENTS |
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| JIANG Pengming , L Yunxia , MEI Guoxiong. UPPER BOUND ANALYSIS OF EARTH PRESSURE ON RETAIN WALL USING RIGID FINITE ELEMENTS[J]. Mechanics and Engineering, 2008, 30(5): 40-44. DOI: 10.6052/1000-0992-2007-267 |
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| Authors: | JIANG Pengming L Yunxia MEI Guoxiong |
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| Affiliation: | JIANG Pengming , L(U) Yunxia , MEI Guoxiong |
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| Abstract: | Rigid finite elements are used to construct akinematically admissible velocity field. The objective function fordetermination of earth pressure contains some unknowns, subject to aset of linear constraints derived from the energy-work balanceequation, the Mohr-Coulomb failure (yield) criterion, the associated flowrule and a number of boundary conditions. The objective function withconstraints leads to a linear programming problem, which can be solved byan interior point algorithm. A classical earth pressure calculation caseshows that the presented method is of valid. |
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| Keywords: | limit analysis upper bound earth pressure linear programming rigid finite element |
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