摘要
利用15号白矿物油与正十二烷的混合液体与粒径为0.5~1.0 mm的熔融石英砂配制出具有砂土特性的透明土。在模型槽中分别进行坡顶单桩、坡顶排桩和斜坡中部的沉桩试验。研究了斜坡环境下不同沉桩形式下的沉桩挤土规律。利用PIVview2C和Surfer11软件对采集图像进行分析和数据处理。结果表明:在30°斜坡坡顶上沉桩时,桩周土体均发生了一定变形,且变形量随着桩距的增大而逐渐减小;靠近边坡一侧的变形量明显大于远离边坡一侧;在距离坡顶6倍桩径以上的位置沉桩,挤土效应的影响已经不明显。
The transparent soil with sand characteristics was produced by using a mixed liquid of No.15 white mineral oil and n-dodecane and fused silica sand with particle diameter of 0.5~1.0 mm.The pile driving tests at the top of the slope,in rows at the top of the slope and in the middle of the slope were conducted in the model tank.The soil squeezing rule of different pile driving forms in slope environment was analyzed from the tests.The acquired images and data were analyzed and processed using PIVview2C and Surfer11 softwares.The results show that when the pile is drived at the top of a 30°slope,the soil around the pile has a certain deformation,which gradually decreases with the increase of the pile distance.Deformation near the edge of the slope is significantly greater than the side of the back slope.Beyond a distance of 6 times the pile diameter from the top of the slope,the soil squeezing effect is not obvious.
作者
尹海峰
杜文杰
付善春
李士瑞
邬明亮
YIN Haifeng;DU Wenjie;FU Shanchun;LI Shirui;WU Mingliang(College of Civil Engineering,Xinyang University,Xinyang 464099,Henan,China)
出处
《上海建材》
2024年第4期21-27,共7页
Shanghai Building Materials
基金
河南省科技攻关计划资助项目(222102210306)
河南省高等学校科研资助项目(23B560013)。
关键词
透明砂土
斜坡
沉桩挤土规律
模型试验
transparent soil
slope
rule of pile driving and soil squeezing
model test
