倾斜荷载作用下沉箱基础的极限承载力计算方法

邱月; 高玉峰; 黎冰; 王钰轲; 吴迪

doi:10.11988/ckyyb.20160228

PDF(2424 KB)

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

岩土工程

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

作者信息 +

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

Author information +

文章历史 +

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

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.

导出引用

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]. raybet体育在线院报. 2017, 34(6): 103-107 https://doi.org/10.11988/ckyyb.20160228

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 Changjiang River Scientific Research Institute. 2017, 34(6): 103-107 https://doi.org/10.11988/ckyyb.20160228

中图分类号： TU443

参考文献

[1] AUDIBERT J M E,CLUKEY E C,HUANG J.Suction Caisson Installation at Horn Mountain-A Case History∥Proceedings of the 13th International Offshore and Polar Engineering Conference. Honolulu, Hawaii, May 25-30,2003:762-769.
EI-SHERBINY R M. Performance of Suction Caisson Anchors in Normally Consolidated Clay . USA: The University of Texas at Austin, 2005.
ISKANDER M, El-GHARBAWY S, OLSON R. Performance of Suction Caissons in Sand and Clay . Canadian Geotechnical Journal, 2002, 39(3): 576-584.
ALLERSMA H G B, BRINKGREVER B J, SIMON T,et al. Centrifuge and Numerical Modeling of Horizontally Loaded Suction Piles ∥The Ninth International Offshore and Polar Engineering Conference.May 30-June 4, Brest, France, 1999: 222-228.
BANG S,CHO Y. Ultimate Horizontal Loading Capacity of Suction Piles∥The Eleventh International Offshore and Polar Engineering Conference.Stavanger, Norway, June 17-22, 2001: 56-63.
BANG S, JONES K D, KIM K O, et al. Inclined Loading Capacity of Suction Piles in Sand. Ocean Engineering, 2011,38(7): 915-924.
施晓春, 陈国祥,龚晓南,等. 桶形基础单桶水平承载力的试验研究. 岩土工程学报, 1999,21(6):723-726.
孙曦源. 水平荷载作用下软土地基中桶形基础工作机理及承载性能研究. 大连:大连理工大学, 2009.
黎冰, 高玉峰, 沙成明,等. 砂土中吸力式沉箱基础的最大承载力计算方法. 东南大学学报(自然科学版), 2012, 42(6):1201-1205.
黎冰, 郑翔,高玉峰,等.砂土中吸力式沉箱基础的最佳荷载作用点位置模型试验研究.岩土力学, 2013,34(9):2521-2526.
黎冰, 郑翔, 高玉峰,等.砂土中吸力式沉箱基础抗拔承载特性试验研究.岩土工程学报, 2013,35(5):902-907.
郑翔, 黎冰, 邱月,等. 吸力式沉箱基础抗拔破坏标准研究. 科学技术与工程, 2013, 13(7):1868-1872.
郑翔,黎冰,邱月,等. 吸力式沉箱基础抗拔破坏标准研究与分析.中国海洋平台,2013,28(3):38-422.
MCCARRON W O, SUKUMARAN B. Ultimate Capacities of Suction Caissons and Pile Elements for Deepwater Applications ∥The Tenth International Offshore and Polar Engineering Conference.Seattle, Washington, USA, May 28-June 2, 2000:466-469.
ZDRAVKOVI L, POTTS D M, JARDIN R J. A Parametric Study of the Pull-out Capacity of Bucket Foundations in Soft Clay. Geotechnique, 2001, 51(1):55-67.
黎冰, 高玉峰, 邱月,等.一种用于模型试验中吸力式沉箱沉贯垂直度的控制装置:中国,CN102635131A .2014-06-11.