倾斜荷载作用下沉箱基础的极限承载力计算方法

发布时间：2018-02-24 10:18

本文关键词： 吸力式沉箱基础倾斜荷载极限承载力长径比荷载作用角度　出处：《长江科学院院报》2017年06期 　论文类型：期刊论文

【摘要】：为了确定沉箱基础在顶部受到倾斜荷载时的抗拔承载力,利用极限包络线方法进行分析。基于15组模型试验以及合理假定,提出了水平荷载、竖向荷载作用下沉箱基础的极限抗拔承载力函数,通过分析水平、竖向极限承载力系数与长径比的关系,提出了水平、竖向荷载作用下沉箱基础的承载力计算方法。基于不同长径比、不同荷载作用角度下沉箱基础的水平承载力归一化分量和竖向承载力归一化分量之间的破坏包络线图,得到了两者之间的幂函数关系,从而得到了沉箱基础在倾斜荷载作用下的极限承载力。
[Abstract]:In order to determine the uplift bearing capacity of caisson foundation under inclined load at the top of the caisson, the ultimate envelope method is used to analyze it. Based on 15 groups of model tests and reasonable assumptions, the horizontal load is proposed. The ultimate uplift bearing capacity function of caisson foundation under vertical load is put forward by analyzing the level, the relationship between the vertical ultimate bearing capacity coefficient and the ratio of length to diameter. The calculation method of the bearing capacity of caisson foundation under vertical load. Based on the failure envelope diagram of the normalized and normalized components of horizontal bearing capacity of caisson foundation under different aspect ratio and different load angle, The power function relation between them is obtained, and the ultimate bearing capacity of caisson foundation under inclined load is obtained.
【作者单位】：河海大学岩土力学与堤坝工程教育部重点实验室;山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地;东南大学土木工程学院;
【基金】：江苏省普通高校研究生科研创新计划项目(CXZZ13_0242)
【分类号】：P75;TU473.2

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