南京航空航天大学学报（英文版）
南京航空航天大學學報（英文版）
남경항공항천대학학보（영문판）
TRANSACTIONS OF NANJING UNIVERSITY OF AERONATICS & ASTRONAUTICS
2013年
4期
404-412
,共9页
沈正%刘志彬%方磊%李汉光
瀋正%劉誌彬%方磊%李漢光
침정%류지빈%방뢰%리한광
dynamic compaction%single point impact%liquefaction%standard penetration test (SPT )%improvement depth
A highway in the floodplain of the Abandoned Yellow River in the north of Jiangsu Province is recently remediated to reduce liquefaction potential using the dynamic compaction (DC) method of densification of in-place soils .Firstly ,the liquefaction potential of the soil at the project site is analysed according to the code of seismic de-sign .Then the in-situ single point impact tests are performed on the liquefiable soil .Settlement of crater ,excess pore pressure ,ground heave and lateral deformation under DC impact are measured and analyzed .Subsequently , the standard penetration test (SPT ) and cone penetration test (CPT ) are used for investigating the compaction ef-fectiveness .At last ,the improvement effect of DC is discussed according to the technical specification of dynamic consolidation to ground treatment .The investigation results indicate that the DC technique is an effective way for remediating liquefiable soil in highway engineering practice .
