Soil-Steel Structure Response to Live Loads

by Baidar Bakht, Sr. Research Officer; Research and Development Div., Ontario Ministry of Transportation and Communications, Downsview, Ontario, Canada,

Serial Information: Journal of the Geotechnical Engineering Division, 1981, Vol. 107, Issue 6, Pg. 779-798

Document Type: Journal Paper


Various existing methods are described for predicting live load effects in conduit walls of soil-steel structures (also referred to as long-span metal culverts). Also described are three live load tests on in-service soil-steel structures. In light of the test results, the current methods are overly conservative. The test results confirm that the metallic shell undergoes little bending, especially if the conduit is circular. The impact factor is not negligible even if the depth of cover is larger than 3 ft. An improved simplified method is presented to calculate the conduit wall thrust due to live loads.

Subject Headings: Load tests | Conduits | Structural response | Soil structures | Live loads | Load factors | Walls | Existing buildings

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