强度折减有限元法在加固桩基码头岸坡中的应用  

Application of Strength Degradation FEM to Strengthening of Slope of Wharf on Piled Foundation

作　　者：刘作飞[1] 王多垠[1,2] 汪承志[1,2] 

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]重庆航运工程技术研究中心,重庆400074

出　　处：《中国港湾建设》2008年第5期13-16,共4页China Harbour Engineering

基　　金：重庆市自然科学基金重点资助项目(CTTC;2007BA6020)

摘　　要：分析了传统加固桩基岸坡的特点,运用强度折减理论和改进的有限元计算方法,以等效塑性应变区贯通时为岸坡破坏标准,对需要加固的码头桩基岸坡进行了稳定分析。结果表明,码头岸坡稳定性不足的主要原因是软弱土层在自重和堆货作用下的边坡失稳,提出了合理的加固方案,同时验证了该破坏判别标准是适宜的,能够在工程实际中加以运用。The paper analyzes the characteristics of the traditional method to strengthen the slope of a piled foundation slope and also presents the stability analysis of the slope for a wharf built on a piled foundation that requires strengthening by using the theory of strength degradation and the improved finite element method and taking the run-through of equivalent plastic strain zone as the criterion of slope failure. The results indicated that main reason of insufficient stability of the wharf slope is that the weak soil layer loses its stability under the action of its self dead weight and the weight of cargo on top. At the same time it is verified that the failure criterion is suitable and it can be used in the actual projects.

关 键 词：桩基码头 岸坡稳定分析 强度折减 安全系数 加固 

分 类 号：TU432[建筑科学—岩土工程]