Numerical simulation and field test at the cut to fill location of subgrade treated with geogrids

Zhang Yong-qing; Wang Xuan-cang; Wang Chao-hui; Chen Xi-mei

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Zhang Yong-qing, Wang Xuan-cang, Wang Chao-hui, Chen Xi-mei. Numerical simulation and field test at the cut to fill location of subgrade treated with geogrids[J]. Journal of Traffic and Transportation Engineering, 2008, 8(3): 63-67.

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Zhang Yong-qing, Wang Xuan-cang, Wang Chao-hui, Chen Xi-mei. Numerical simulation and field test at the cut to fill location of subgrade treated with geogrids[J]. Journal of Traffic and Transportation Engineering, 2008, 8(3): 63-67.

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Numerical simulation and field test at the cut to fill location of subgrade treated with geogrids

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

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Author Bio:
Zhang Yong-qing(1963-), male, doctoral student, +86-29-82334331, xian856@163.com

Wang Xuan-cang(1956-), male, professor, +86-29-82334836, wxc2005@163.com
Received Date: 2007-11-28
Publish Date: 2008-06-25

Abstract

Abstract

The compression deformations and interaction of the subgrade and groundsill were considered at the cut to fill location, a finite element model of subgrade deformation was established by using ANSYS software, the influence rules of the vertical space and length of geogrids at cut location on subgrade were simulated, the field test and subsidence track observation at different test sections were carried out, and the influence of geogrids layer number on the unequal settlement of subgrade was studied. The result indicates that when the vertical space of geogrids is 0.8~1.0 m, the change of vertical displacement for pavement is slower, the unequal settlement of subgrade is less, so it is recommended that the rational vertical space of geogrids is not bigger than 1.0 m; the smallest chose length of geogrids at reinforcing end in cut section is 2 m for economy because the influence of the length change on the vertical displacement of pavement is less; the unequal settlement of subgrade can be reduced effectively by burying a layer of geogrid at the bottom of 96 area and 94 area respectively.
- subgrade engineering,
- cut to fill location,
- numerical simulation,
- field test,
- geogrid

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References(15)

References

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