Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2013, Vol. 34 ›› Issue (8): 1202-1205.DOI: -

• Resources & Civil Engineering • Previous Articles     Next Articles

Subgrade Settlement of HighSpeed Railway in Seasonal Frozen Soil Area

ZHANG Shuang1， TANG Chunan2， ZHANG Xiangdong3   

  1. 1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2. Center for Rock Instability and Seismicity Research， Dalian University of Technology， Dalian 116024， China; 3. Institute of Civil Engineering and Transportation， Liaoning Technical University， Fuxin， 123000， China.
  • Received:2012-11-12 Revised:2012-11-12 Online:2013-08-15 Published:2013-03-22
  • Contact: ZHANG Shuang
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Abstract: Subgrade settlement at the Sujiatun section of Hada highspeed railway was simulated using the finite element software ADINA， and it was concluded that the subgrade settlement did not meet the specification if the CFG (cement flyash grave) piles were not applied to subgrade. By changing the parameters of CFG piles， including cushion modulus， cushion thickness， the diameter and length of piles， and spacing of piles， the relationship between the parameters and subgrade settlement was investigated， with the settlement values obtained on conditions of different parameter combinations. The result shows that the subsidence value is minimal when the cushion thickness is 350mm， cushion modulus is 120MPa， pile spacing is 2m， and the diameter and length of the pile are 05m and 95m， respectively.

Key words: highspeed railway, seasonal frozen soil, CFG pile composite subgrade, finite element, settlement value

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