Stresses in Shallow Elliptical Tunnel

by Robert Mark,

Serial Information: Journal of the Geotechnical Engineering Division, 1976, Vol. 102, Issue 11, Pg. 1187-1190

Document Type: Journal Paper

Abstract: Structural-soil composite bridge systems utilizing corrugated steel culvert lines have recently become quite popular. In a previous page on long-span flexible elliptical culverts, one of the configurations studied was a shallow tunnel with the soil surface subjected to a concentrated load simulating the overhead passage of heavy equipment at an early stage of construction. However, as this analysis was carried out using planar experimental and numerical models, only a surface line loading was considered; it was, of course, impossible to take into account the attenuation of the concentrated load effect along the longitudinal axis of the tunnel. To obtain this information, a simple three-dimensional photoelastic model test was devised that would yield data which is compatible with the previously reported unlined elliptical tunnel under line loading.

Subject Headings: Tunnels | Concentrated loads | Model tests | Composite bridges | Steel bridges | Culverts | Construction equipment | Numerical models |

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