非共轴特性对吸力式桶形基础水平承载性能的影响研究

大坝与安全 ›› 2018 ›› Issue (6): 50-55.

非共轴特性对吸力式桶形基础水平承载性能的影响研究

汤振¹，罗强²，朱思雨²，李晓磊²，贾虎²，王奎阳²

1. 安徽理工大学土木建筑学院，安徽淮南，232001；2. 南阳师范学院土木建筑工程学院，河南南阳，473061

收稿日期:2018-06-04 修回日期:2018-09-04 出版日期:2018-12-08 发布日期:2018-12-08
作者简介:汤振（1994- ），男，河南信阳人，硕士研究生，研究方向为岩土工程。
基金资助:
国家自然科学基金项目（51609117；51209028）

Influence on horizontal bearing capacity of suction bucket in consideration of non-coaxial behavior of sand

TANG Zhen, LUO Qiang, ZHU Si-yu, LI Xiao-lei, JIA Hu and WANG Kui-yang

School of Civil Engineering and Architecture, Anhui University of Science and Technology

Received:2018-06-04 Revised:2018-09-04 Online:2018-12-08 Published:2018-12-08

摘要/Abstract

摘要： 以吸力式桶形基础为数值分析对象，建立一种砂土非共轴弹塑性本构模型，研究非共轴特性对基础水平承载性能的影响。研究结果表明：非共轴角度在变形初期比较显著，随着地基变形的增加，非共轴角度逐渐减小。非共轴特性对土体与桶壁间的水平压力和摩擦力的影响比较显著。随着长径比的增加，非共轴特性对水平承载性能的影响逐渐显著。

关键词: 主应力方向, 非共轴, 吸力桶, 水平荷载

Abstract: A non-coaxial constitutive model for sand is applied into the numerical analysis of suction bucket models, aimed to study the non-coaxial influence on the horizontal bearing behavior of suction buckets. The conclusions show that non-coaxial angle is bigger at the early stage of the soil deformation, but it decreases when soil deformation increases. Non-coaxial behavior has obvious influence on the horizontal pressure and frictional resistance between soil and bucket. As the length-diameter ratios increases, non-coaxial behavior's influence on the horizontal load-deformation becomes more obvious.

Key words: principal stress direction, non-coaxial model, suction bucket, horizontal load

汤振，罗强，朱思雨，李晓磊，贾虎，王奎阳. 非共轴特性对吸力式桶形基础水平承载性能的影响研究[J]. 大坝与安全, 2018, 0(6): 50-55.

TANG Zhen, LUO Qiang, ZHU Si-yu, LI Xiao-lei, JIA Hu and WANG Kui-yang. Influence on horizontal bearing capacity of suction bucket in consideration of non-coaxial behavior of sand[J]. Dam & Safety, 2018, 0(6): 50-55.