摘要
将Melan静力型安定定理加以推广,使其适用于非关联流动法则下的土工结构的安定性分析.应用Palmer的方法构造塑性势面,根据其性质,证明了静力型安定定理在非关联流动法则下同样成立.在非关联的Mohr-Coulomb准则下,求解浅黏土层地基极限载荷,得到了比较合理的解答.最后,计算了非关联流动法则下的条形基础地基的安定载荷.
Some extensions are made on Melan's shakedown theory for shakedown analysis of soil following non-associated flow law. Palmer's method is used to construct a convex plastic potential surface. According to the properties of the plastic potential surface, it is proved that Melan's shakedown theory with non-associated flow law is still kept valid. Plastic potential function associated with the Mohr-Coulomb yield criterion is formulated and then is applied to determine the limit load of shallow clay stratification. The computed results are in good agreement with theoretical solutions. Finally, shakedown load of strip footing is calculated on the basis of the Melan's shakedown theory with non-associated flow law.
出处
《力学学报》
EI
CSCD
北大核心
2003年第1期50-56,共7页
Chinese Journal of Theoretical and Applied Mechanics
基金
国家自然科学基金(59779017)
教育部跨世纪优秀人才培养计划研究基金资助.
