›› 2010, Vol. 31 ›› Issue (1): 233-236.

• Geotechnical Engineering • Previous Articles     Next Articles

An observation and analysis of passenger dedicated line subgrade in collapsible loess zone

XU Xing-wang，LI Xiao-lun   

  1. Geological Prospecting & Roadbed Design Department of China Railway First Survey and Design Institute Group Ltd, Shanxi Xi’an 710043, China
  • Received:2009-07-18 Online:2010-01-10 Published:2010-02-02

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Abstract:

Zhengzhou-Xi'an Passenger Dedicated Line is the speed of loess area of China's first 300 ~ 350km / h without the laying of high-speed railway track ballast, subgrade settlement control is to ensure that high-speed railway operational safety an important factor. Zhengzhou-Xi'an Passenger Dedicated on-site through the settlement observation data analysis, we found a smaller settlement control of loess foundation required in the circumstances with a completion time is shorter, the settlement trends are consistent with hyperbolic analysis, laid on the roadbed over the central part of the settlement plates laid on the shoulder observation of pile settlement curve fitting is good, there are lots of cutting smaller settlement in its society,These results for high-speed passenger rail line Observation Design of Embankment Settlement great value.

Key words: loess, ballastless track, settlement observation, collapsibility, observation section

CLC Number: 

  • U 45
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