Application of PCC pile in soil improvement of highway

来源期刊：中南大学学报(英文版)2008年第z2期

论文作者：刘芝平 刘汉龙 谭慧明

文章页码：108 - 113

Key words：PCC pile； soil improvement； working mechanism； bearing capacity

Abstract: The construction process and load-bearing behaviors of Cast-in-place concrete thin-wall pipe piles are analyzed based on its application on Yantong Expressway Project. The low strain test, static load test and field excavation were also carried out, and the bearing capacity of the new pile can meet the requirements of design. With the increase of pile diameter, the bearing capacity is increased. The settlement of composite foundation is decreased, when the replacement ratio of pile is increased. The test results also show that the load carried by inner soils is neglectable. According to the tests and application, it can be concluded that the new type of pile is convenient to construction with high bearing capacity and reliable quality, which has great potential in practical engineering.