Experimental study on pore pressure during pile driving in silty soil with mucky soil interbed

被引：0

作者：

Zhang, Zhong-Miao ^{[1
]}

Xie, Zhi-Zhuan ^{[1
]}

Liu, Jun-Wei ^{[1
]}

Zhang, Qian-Qing ^{[1
]}

机构：

[1] Institute of Geotechnical Engineering, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China

来源：

Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2010年 / 32卷 / SUPPL. 2期

关键词：

Geotechnical engineering - Pile driving - Piles - Pressure distribution - Water - Soils;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to understand the changes of the pore water pressure during pile driving, field monitoring of compaction effect is carried out at a site in Xiaoshan Hangzhou and some rules can be concluded. The excess pore water pressure of field space is significantly greater than that of the both side of holes to relax stress, and the excess pore water pressure of the inside of holes to relax stress is also larger than that of the lateral side. The most dynamic change law of excess pore water pressure is mostly growth at the first and decline at the last. When the pile driving distance is large, the dynamic change law of excess pore water pressure is slow growth during the pile driving, and when the pile driving distance is small the dynamic change law of excess pore water pressure is growth at the first and decline at the last during the pile driving. Because the permeability of silty soil and mucky soil is different, the excess pore water pressure is mutation at the depth of 3 m to 7 m, where is the interface between silty soil and mucky soil. When the PTC-500(65) pile is driving, the excess pore water pressure is much larger than that of PTC-400(60) pile. When the pile driving distance is less than 5 m, the excess pore water pressure changes obviously and when the pile driving distance is larger than 5 m the excess pore water pressure changes slowly.

引用

页码：533 / 536