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饱和软土中沉桩引起的超孔隙水压力分析
引用本文:陆培毅,杨志锋,付海峰,雷华阳,朱平.饱和软土中沉桩引起的超孔隙水压力分析[J].工业建筑,2012(Z1):416-419.
作者姓名:陆培毅  杨志锋  付海峰  雷华阳  朱平
作者单位:天津大学建筑工程学院;天津市土木工程结构及新材料重点实验室;天津港地产发展有限公司
摘    要:结合天津某工程桩沉桩过程中的实测孔隙水压力分布资料,探讨了单桩桩周土体中产生的超孔隙水压力大小、分布规律及影响范围,得到桩周土中超孔隙水压力的分布随距离呈对数型衰减,影响范围约为13倍桩径。对实侧推导值和理论值进行了比较,分析结果表明:在靠近桩身处,理论值要大于实测推导值,但是随着深度的加大,两值逐渐接近。

关 键 词:圆孔扩张理论  超孔隙水压力  沉桩

THE ANALYSIS OF EXCESS PORE WATER PRESSURE CAUSED BY PILE DRIVING IN SATURATED SOFT SOIL
Lu Peiyi,Yang Zhifeng,Fu Haifeng,Lei Huayang,Zhu Ping.THE ANALYSIS OF EXCESS PORE WATER PRESSURE CAUSED BY PILE DRIVING IN SATURATED SOFT SOIL[J].Industrial Construction,2012(Z1):416-419.
Authors:Lu Peiyi  Yang Zhifeng  Fu Haifeng  Lei Huayang  Zhu Ping
Affiliation:1,2(1.College of Civil Engineering Tianjin University,Tianjin 300072,China; 2.Tianjin Civil Engineering Structure and New Materials Key Laboratory,Tianjin 300072,China; 3.Tianjin Port Real Estate Development Co.,Ltd,Tianjin 300072,China)
Abstract:Considering the measured pore water pressure data during piles driving in Tianjin,distribution rules and range of the excess pore pressure caused in soil around single pile are discussed.Results indicate that the excess pore pressure declines in logarithm function with the distance from the pile,and the influencing range is about 13 times of the pile diameter.The comparison between the theoretical results and the measured data shows that theoretical results are bigger than the measured data around the pile.But as the depth increases,two values are approaching.
Keywords:cylindrical cavity expansion theory  excess pore water pressure  piles driving
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