Paper Title:
Numerical Analysis of Slab Culvert Beneath Imperfect Ditch Covered with Geogrid Layers
  Abstract

The overburden of high embankment culvert is over 10 m, such high fill always leads large earth pressure on the slab of the culvert. The imperfect ditch covered with geogrid method was employed to reduce the vertical earth pressure on the slab. A series of numerical analyses were performed to investigate the load reduction effect of the imperfect ditch. In the simulation, the number of geogrid layers, the geometry of the load reduction ditches, as well as the location and the stiffness of the geogrid are investigated to analyse the influences on the vertical earth pressures. The results show that the slope angle and the height of the ditch, the plane stiffness of the geogrid have great effect on the load reduction efficiency, ditches with higher height and a slope of 90°lead to a significantly reduction on vertical earth pressures on the crown of culverts. The width of load reduction ditch, number of geogrid layers, the location and spacing of the geogrids have little effect on load reduction, the results can provide references for load reduction of slab culvert.

  Info
Periodical
Chapter
Chapter 6: Frontiers of Manufacturing and Design
Edited by
Dongye Sun, Wen-Pei Sung and Ran Chen
Pages
3338-3341
DOI
10.4028/www.scientific.net/AMM.71-78.3338
Citation
J. J. Zheng, D. P. Luo, Q. Ma, "Numerical Analysis of Slab Culvert Beneath Imperfect Ditch Covered with Geogrid Layers", Applied Mechanics and Materials, Vols. 71-78, pp. 3338-3341, 2011
Online since
July 2011
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$32.00
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