Construction Technology of Precast Pile in Areas with Large Fluctuation of Holding Rock Strata
Taking a hospital project in Ningbo as an example,the application of precast piles in a project with large fluctuation of the holding rock strata was analyzed.According to the characteristics of precast pile,the construction technology of static drilling pile planting was proposed,but there are technical difficulties in the judgment of drilling depth and on-site pile distribution.Therefore,the relationship between the drilling motor current and the holding rock layer was determined by pile test,and the rock and soil mass was judged by the current.According to the elevation of the bearing layer,the length and the number of joints of the precast pipe pile were determined,and the pile distribution was carried out in regional stages.The test results show that all the indexes of pile foundation meet the requirements.
pile foundation engineeringprefabricated pileengineering managementstatic drilling pile planting
NETL
NSTL
万方数据
