9Zheng Gang, Lia Songyu, Chen Renpeng. State of advance- ment of column-type reinforcement element and its application in China [ C ]//Proceedings of the US-China Workshop on Ground Improvement Technologies. US: ASCE, 2009 : 12-25.
10Schaefer V R, Filz G M, Vanzler L S. SHRP2 R02 Phase 1--Geotechnieal solutions for soil improvement, rapid embankment construction, and stabilization of the pavement working platform [ C ]// Proceedings of the US-China Workshop on Ground Improvement Technologies. US: ASCE, 2009:1-11.
