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。
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.
作者
汤振
罗强
朱思雨
李晓磊
贾虎
王奎阳
TANG Zhen;LUO Qiang;ZHU Si-yu;LI Xiao-lei;JIA Hu;WANG Kui-yang
出处
《大坝与安全》
2018年第6期50-55,共6页
Dam & Safety
基金
国家自然科学基金项目(51609117
51209028)
关键词
主应力方向
非共轴
吸力桶
水平荷载
principal stress direction
non-coaxial model
suction bucket
horizontal load
