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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2010  >  10(6): 25-31
FU Zhen, WANG Xuan-cang, LI Hong-zhi, SHI Jian-ping, LIAO Zhi-gao. Differentia settlement of widening subgrade for expressway[J]. Journal of Traffic and Transportation Engineering, 2010, 10(6): 25-31. doi: 10.19818/j.cnki.1671-1637.2010.06.005
Citation: FU Zhen, WANG Xuan-cang, LI Hong-zhi, SHI Jian-ping, LIAO Zhi-gao. Differentia settlement of widening subgrade for expressway[J]. Journal of Traffic and Transportation Engineering, 2010, 10(6): 25-31. doi: 10.19818/j.cnki.1671-1637.2010.06.005
shu

Differentia settlement of widening subgrade for expressway

doi: 10.19818/j.cnki.1671-1637.2010.06.005
  • 1.

    School of Materials Science and Engineering, Chang'an University, Xi'an 710064, Shaanxi, China

  • 2.

    School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

  • 3.

    Limited Company of Expressway Development of Henan Province, Zhengzhou 450000, Henan, China

  • 4.

    General Station of Quality Inspection for Special Engineering of Civil Aviation, Civil Aviation Administration of China, Beijing 100007, China

More Information
  • Author Bio:

    FU Zhen(1976-), female, associate professor, PhD, +86-29-82337340, fuzhen524@163.com

  • Received Date: 2010-07-25
  • Publish Date: 2010-12-25
    Abstract
  • Anxin widening expressway was taken as engineering background, centrifugal model test was applied, several geosynthetics material reinforcement proposals dominated by using geocell were forecasted and contrasted, and the settlements of old subgrade and widening subgrade were analyzed. Test result shows that the settlements during construction account for quite great proportion in half a year for old and new subgrades, above 70%. The settlement of reinforced subgrade is smaller than that of unreinforced subgrade, and the biggest and smallest settlements of various plans occur at the edge of new shoulder and the center of old subgrade. Because of good geology condition, the overall settlement is not certainly big, and there are no obvious differences of settlements among reinforced plans, maintaining at very small level. The smallest and biggest subsidence values are 1.67 cm and 3.33 cm respectively, and the biggest unequal settlement is 1.66 cm. Obviously, reinforce can balance the differentia settlement of subgrade, and reduce total ground settlement to a certain degree.

     

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