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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2007  >  7(1): 54-57
Fu Zhen, Wang Xuan-cang, Chen Xing-guang, Li Hong-zhi, Shi Jian-ping, Wang Lei. Differential settlement characteristics and influencing factors of widening subgrade[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 54-57.
Citation: Fu Zhen, Wang Xuan-cang, Chen Xing-guang, Li Hong-zhi, Shi Jian-ping, Wang Lei. Differential settlement characteristics and influencing factors of widening subgrade[J]. Journal of Traffic and Transportation Engineering, 2007, 7(1): 54-57.
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Differential settlement characteristics and influencing factors of widening subgrade

  • 1.

    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China

  • 2.

    Guangdong Highway Design Institute, Guangzhou 510507, Guangdong, China

  • 3.

    Anxin Rebuilding Project Department of Henan Expressway Company, Xinxiang 450003, Henan, China

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  • Author Bio:

    Fu Zhen(1976-), female, doctoral student, +86-29-83143206, fuzhen524@sina.com

    Wang Xuan-cang(1956-), male, professo, +86-29-82334336, wxc2005@sohu.com

  • Received Date: 2006-10-13
  • Publish Date: 2007-02-25
    Abstract
  • In order to know the influence of differential settlement on widening subgrade, the differential settlement characteristics of widening subgrade were analyzed by finite element method, and the influences of subgrade height, compressive modulus, widening mode and width on the differential settlement and settlement curves of subgrade were studied. The result shows that differential settlement controlling on widening road with two sides is better than that with one side, the maximum differential settlement decreases from 20.58 cm to 5.46 cm when compressive modulus increases from 2 MPa to 10 MPa, and the increase of the biggest differential settlement is not in inverse proportion to the decrease of compressive modulus, while presents slowdown trend; the biggest differential settlement increases from 6.38 cm to 13.10 cm with subgrade height increasing from 2 m to 8 m, because of the influence of boundary conditions, the smaller the subgrade height is, the closer the settlement curve of widening subgrade top is to "~".

     

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