Special foundation treatment and foundation selection design for TOD project in a high-intensity collapsible loess region
The TOD project is located in a high-intensity collapsible loess region.The foundation treatment and foundation selection of the project were analyzed from the aspects of foundation depth,foundation treatment,base pressure,site surroundings,later construction interference,and engineering cost.Based on the characteristics of the project,different foundation treatment schemes were compared,with a focus on analyzing CFG pile composite foundation raft foundation and long spiral drilled pile pressure grouting raft foundation.The results show that comprehensive cost of CFG pile composite foundation raft foundation is better than that of long spiral drilled pile pressure grouting raft foundation,and the optimized scheme of CFG pile composite foundation raft foundation is given.It is recommended when using CFG pile composite foundation for collapsible loess region,the influence of saturated soil parameters on the bearing capacity of the composite foundation should be considered in order to simplify the compaction pretreatment process.When the depth of the podium foundation is significantly different from that of the main residential building and them are adjacent,considering the convenience and feasibility of the collapsible loess region and construction,it is recommended to use pile foundation for the podium foundation.
TOD projecthigh-intensity regioncollapsible loess regionfoundation treatmentfoundation selection
NETL
NSTL
万方数据
