倾斜荷载作用下沉箱基础的极限承载力计算方法

doi:10.11988/ckyyb.20160228

院报 ›› 2017, Vol. 34 ›› Issue (6): 103-107.DOI: 10.11988/ckyyb.20160228

倾斜荷载作用下沉箱基础的极限承载力计算方法

邱月^1，2，高玉峰¹，黎冰³，王钰轲¹，吴迪¹

1.河海大学岩土力学与堤坝工程教育部重点实验室，南京 210098；
2.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，山东青岛 266590；
3.东南大学土木工程学院，南京 210096

收稿日期:2016-03-14 修回日期:2016-04-09 出版日期:2017-06-01 发布日期:2017-06-19
作者简介:邱月(1987-)，女，江苏镇海人，讲师，博士研究生，从事海洋岩土工程方面的研究，(电话)025-83787287(电子信箱)qiuyue871210@hotmail.com。
基金资助:
江苏省普通高校研究生科研创新计划项目(CXZZ13_0242)

Calculation Methods for Ultimate Inclined Bearing Capacity of Caisson Foundation under Inclined Load

QIU Yue^1,2,GAO Yu-feng¹,LI Bing³,WANG Yu-ke¹,WU Di¹

1.Key Laboratory of Geomechanics and Embankment Engineering of the Ministry of Education, Hohai University, Nanjing 210098, China;
2.State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China;
3.School of Civil Engineering, Southeast University, Nanjing 210096, China

Received:2016-03-14 Revised:2016-04-09 Online:2017-06-01 Published:2017-06-19

摘要/Abstract

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。

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

Abstract: Limit envelope method is employed to obtain the uplift bearing capacity of caisson foundation under inclined load. Functions of ultimate uplift bearing capacity of caisson foundation under horizontal load and vertical load are presented based on 15 sets of model tests and reasonable assumptions. Through analyzing the relationship of coefficients of horizontal and vertical ultimate bearing capacity respectively vs. ratio of length to diameter, the calculation methods for the bearing capacity of caisson foundation under horizontal load and vertical load are obtained. Furthermore, a power function between normalized ultimate horizontal bearing capacity and normalized ultimate vertical bearing capacity of caisson foundation in the presence of varying ratio of length to diameter and angle of load i obtained according to the diagram of failure envelope between the two normalized values. And then the ultimate bearing capacity of caisson foundation under inclined load is obtained.

Key words: suction caisson foundation, inclined load, ultimate bearing capacity, ratio of length to diameter, inclination angle of load

中图分类号:

TU443

邱月，高玉峰，黎冰，王钰轲，吴迪. 倾斜荷载作用下沉箱基础的极限承载力计算方法[J]. 院报, 2017, 34(6): 103-107.

QIU Yue,GAO Yu-feng,LI Bing,WANG Yu-ke,WU Di. Calculation Methods for Ultimate Inclined Bearing Capacity of Caisson Foundation under Inclined Load[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2017, 34(6): 103-107.

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倾斜荷载作用下沉箱基础的极限承载力计算方法

Calculation Methods for Ultimate Inclined Bearing Capacity of Caisson Foundation under Inclined Load

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