EXPERIMENTAL RESEARCH ON SATURATED MUCKY FOUNDATION TREATMENT WITH WELL-POINT DEWATERING COMBINED WITH DYNAMIC COMPACTION METHOD
LIU Jia1，LUO Yan1，2，ZHANG Gongxin1，DONG Zhiliang1，WANG Youyuan1
(1. Engineering Technology Research Co.，Ltd. of CCCC Fourth Harbor Engineering Co.，Ltd.，Guangzhou， Guangdong 510230，China；2. South China University of Technology，Guangzhou，Guangdong 510641，China)
Abstract：Aiming at the insufficiency of traditional dynamic compaction method to saturated mucky with a high groundwater level，a new static-dynamic drainage consolidation technique，well-point dewatering combined with dynamic compaction method(WDDC) is developed. WDDC has been applied to Guangzhou Nansha harbor grain and universal terminal project soft foundation improvement test area research project where the in-situ monitoring (groundwater level，pore water pressure and settlement) and geotechnical laboratory tests are conducted to investigate the mechanism and qualification of WDDC. The ground treatment effect is confirmed by static cone penetration test，vane shear test，standard penetration test and static loading test. The specific penetration resistance can increase 200 to 300 kPa while the standard penetration test can be added 2 blows. The bearing capacity of foundation can reach 130 kPa. WDDC is an efficient soft foundation treatment method and the tests provide a new way for future industrial applications.
