Behaviour analysis on the vertically loaded bored pile socketed into weak rocks using slip-line theory arc failure surface
Behaviour analysis on the vertically loaded bored pile socketed into weak rocks using slip-line theory arc failure surface
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基于滑移线理论圆弧破坏面的竖向荷载钻孔桩嵌接软岩行为分析
DOI：
10.1016/j.compgeo.2020.103852
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发表时间：
2020-12
影响因子：
5.3
通讯作者：
Ruo-feng Feng
中科院分区：
文献类型：
--
作者：
Qian-qing Zhang;Bin Ma;Shan-wei Liu;Ruo-feng Feng
嵌岩钻孔灌注桩由于具有承载力高、沉降小等优点，已成为大多数结构常用的基础。本文针对嵌套在软弱岩体中的竖向加载钻孔桩，将混凝土-岩石界面的剪切破坏过程分为剪胀滑动阶段和峰后滑动阶段，并提出了双线性剪切模型来描述剪切应力与混凝土-岩石相对位移之间的关系。利用剪胀效应和滑移线场理论确定了混凝土-岩石剪切破坏面形状，明确了混凝土-岩石界面的临界剪切位移。在此基础上，建立了嵌套软弱岩体中竖向加载钻孔桩的荷载传递方法，以捕捉轴向力的分布。此外，还进行了参数研究，评估了混凝土-岩石界面粗糙度、法向刚度和剩余摩擦角对残余表皮摩擦的影响。
Due to the advantages of high bearing capacity and small settlement, rock-socketed bored piles have been commonly used as the foundation for most structures. In this paper, for the vertically loaded bored pile socketed into weak rocks, the shear failure process of the concrete-rock interface was divided into two stages, e.g., a dilatant sliding stage and a post-peak sliding stage, and a bilinear shear model was proposed to describe the relationship between shear stress and concrete-rock relative displacement. The shape of the concrete-rock shear failure surface was determined using the dilatancy effect and the slip-line field theory, and the critical shear displacement of the concrete-rock interface was clarified. Load transfer method of the vertically loaded bored pile socketed into weak rocks was then established to capture the distribution of axial force. Moreover, a parameter study was conducted to assess the influence of the concrete-rock interface roughness, normal stiffness, and residual friction angle on the residual skin friction.
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影响因子：
3.6
作者：
R. K. Rowe;H. Armitage
通讯作者：
R. K. Rowe;H. Armitage
DOI：
--
发表时间：
2009
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
L. Xiaoming
通讯作者：
L. Xiaoming
DOI：
--
发表时间：
1999
期刊：
--
影响因子：
--
作者：
P. Pells
通讯作者：
P. Pells
影响因子：
5.3
作者：
Zhang Qianqing;Zhong-miao Zhang;Jing-yu He
通讯作者：
Zhang Qianqing;Zhong-miao Zhang;Jing-yu He
影响因子：
1.7
作者：
Qian-qing Zhang;Shan-wei Liu;Ruo-feng Feng;Xiao-mi Li
通讯作者：
Qian-qing Zhang;Shan-wei Liu;Ruo-feng Feng;Xiao-mi Li