Dam & Safety ›› 2018, Vol. 0 ›› Issue (6): 50-55.

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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   

  1. 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

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. 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
  • 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)

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

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