7Han Jie, Akins Ken. Use of geogrid-reinforced and pile-supported earth structures[M]. Proceeding of in- ternational deep foundation congress, ASCE, Orlando, 2002:668--679.
8Habib H A A, Brugman M H A, Uilting B GJ. Wid- ening of Road N247 founded on a geogrid reinforced mattress on piles[-M]. Seventh International Confer- ence on geosynthetics Vol. 1, Sep 22 -- 27, Nice France, 2002 ~ 369-- 372.
9Han Jie, Sadik O, Robert L P, et al. Numerical anal- ysis of foundation columns to support widening of era-bankments[J]. Computers and Geotechnics, 2007,34: 435--448.
10Montgomery J, Karstunen M. Modelling embank- ments with vertical drains-a comparison of numerical methods[M], Proceeding of the 17th International Conference on Soil Mechanics and Geotechnical Engi- neering, Alexandric, Egypt, 2009 : 1610-- 1613.