摘要
通过分析工程桩沉桩过程中的实测资料,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30倍桩径。对实测值、理论值进行了比较,分析结果表明:从实测拟合直线中求得的塑性区半径代入圆柱孔扩张理论得到的估算值与实测值吻合较好。
By analyzing the measured data during piles driving, 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 30 times of the pile radius. The comparison between the theoretical results and the measured data shows that the measured results of. the excess pore pressure fit better with the computed results by substituting the plastic area radius from fitting line of the measured data into the cylindrical cavity expansion theory.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第A02期5740-5744,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
基础工程
沉桩
超孔隙水压力
柱孔扩张理论
实测值
foundation engineering
piles driving
excess pore water pressure： cylindrical cavity expansion theory
measured results
