Experimental research on bearing behavior of composite foundation with rammed soil-cement tapered piles

被引：0

作者：

He, Jie ^{[1
,2
]}

Zhang, Ke-Neng ^{[1
]}

Liu, Jie ^{[2
]}

Wu, You-Ping ^{[2
]}

Li, Bing ^{[2
]}

机构：

[1] School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

[2] School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2012年 / 43卷 / 05期

关键词：

Foundations - Behavioral research - Piles - Soil cement;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Aimed at composite foundation with rammed cement-soil piles in soft ground, the contrast tests on a group of composite foundation with nine rammed cylindrical cement-soil piles and three groups of composite foundation with nine rammed tapered cement-soil piles were performed in laboratory, respectively. The average settlement difference among pile and soil, pile stress, average pile-soil stress ratio and the relationship between load and average settlement of four groups of composite foundation with rammed cement-soil piles were respectively studied under the same condition. The results indicate that the differential settlement between pile and soil can be adjusted by rammed tapered cement-soil pile, the ground settlement decreases and its bearing capacity is enhanced obviously. The bearing behavior of rammed tapered cement-soil piles in the composite foundation can be exerted by enhancing its taper. Within some load scopes, the average pile-soil stress ratio of composite foundation with rammed tapered cement-soil piles is higher than that of composite foundation with rammed cylindrical cement-soil piles. With the increase of load unceasingly, the load shared by tapered piles increases restrictedly, and the average pile-soil stress ratio of composite foundation with rammed cement-soil tapered piles is near a certain value or falls down, i.e. the slope skin of tapered pile can effectively alleviate the stress concentration of pile.

引用

页码：1920 / 1925