桩-桶基础抗拔承载力分析  

Analysis of uplift capacity of pile-bucket foundation

作　　者：刘文白[1] 王梦瑜[1] 周健[2] 

机构地区：[1]上海海事大学交通运输学院,上海200135 [2]同济大学地下建筑与工程系,上海200092

出　　处：《上海地质》2006年第3期24-28,39,共6页

摘　　要：根据新型基础一桩-桶基础在上拔荷载作用下的颗粒流模拟试验结果,分析了桩桶基础在上拔荷载作用下土体的破坏过程,并对颗粒流模拟试验的颗粒的破坏面进行拟合,提出桩桶基础的上拔承载力计算模式。桩-桶基础的极限上拔承载力由破坏土体侧表面抗剪强度在竖直方向投影的集合及其包围土体土重和桩-桶基础自重组成,建立了桩-桶基础的上拔承载力计算公式,分析了上拔承载力影响因素。According to the result of PDF^2D which was used to simulate pile - bucket foundation bearing uplift loading, this article analyses the process of the behavior of soil during the uplift loading, and sketches the rupture of particle of PDF^2D. then this paper proposes the pattern of calculating uplift capacity of pile - bucket foundation. Uplift capacity of pile - bucket foundation can be divided in three parts： gather of projection which is on the erect direction of shear strength of rupture cover, the weight of the soil which is wrapped by the cover mentioned and weight of foundation itself. A theoretical model is proposed to calculate the ultimate uplift bearing capacity in the sand. Factors which affecting uplift capacity are depicted.

关 键 词：桩桶基础 上拔荷载 颗粒流 

分 类 号：TU375.302[建筑科学—结构工程]