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Brief reference is made to existing theoretical analyses and experimental data relevant to the problem of the stress distribution in end blocks. The programme of experimental work undertaken on end blocks is then defined and the essential information concerning the test specimens and actual tests is given.
One pier and two spans of the bridge were demolished when two barges collided with it in October 1960. An investigation was instituted, for insurance purposes, to determine the degree to which the damage could be attributed, in whole or in part, to one or more of the possible causal factors, which were collision, explosion or fire. This investigation necessitated an above- and below-water survey and examination of the remaining and demolished structures.
The paper suggests an analytical method for evaluating the tensile stresses present within a short end block and in the web of the adjacent I-beam section. It is intended primarily for use with beams prestressed by external cables, but is not confined to these.
J. R. RYDZEWSKI and F. J. WHITBREAD