期刊
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS
卷 174, 期 2, 页码 132-144出版社
ICE PUBLISHING
DOI: 10.1680/jstbu.16.00206
关键词
foundations; models (physical); piles & piling
This study experimentally compared the resistance capacity of a single pile excited by two opposite rotary machines in dry and saturated sandy soil. The results showed that the pile tip load decreased in dry soil during machine operation, while it increased in saturated soil due to water acting as a lubricant.
A comparison between the resistance capacity of a single pile excited by two opposite rotary machines embedded in dry and saturated sandy soil was considered experimentally. A small-scale physical model was manufactured to accomplish the experimental work in the laboratory. The physical model consists of: two small motors supplied with eccentric mass 0.012 kg and eccentric distance 20 mm representing the two opposite rotary machines, an aluminum shaft with 20 mm in diameter as the pile, and a steel plate with dimensions of (160 x 160 x 20 mm) as a pile cap. The experimental work was achieved taking the following parameters into consideration, pile embedment depth ratio (L/d; length to diameter) and operating frequency of the rotary machines. Twenty four tests were conducted in medium dense fine sandy soil with 60% relative density. The results revealed that in dry soil during machine operation the pile tip load decreased for all (L/d) ratios and operating frequencies due to mobilizing the skin friction resistance. Whereas in saturated soil, for small (L/d) ratio and low operating frequency, the mobilized skin friction was affected by the presence of water, which works as a lubricant leading to increase the pile tip load.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据