oa Civil Engineering = Siviele Ingenieurswese - Die skuifsterkte van voorafgegote gewapende betonportaalduikers



The ultimate strength of 24 specially manufactured precast reinforced concrete portal culverts were experimentally determined. Twelve culverts were tested with roller supports and twelve with pinned supports. All the failures occured in the shear span, as defined in the British Code BS 8110; Part I, of the culverts, with the ultimate strength of the roller support culverts less than that of the pinned support culverts. The results are compared with those predicted by three different codes. The British Code mentioned above gives the best prediction for the ultimate strength and the prediction can be improved with a change in the definition for the shear span.


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