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Experimental evaluation of radial stresses in singly curved PSC shell elements
Published in
Volume: 32
Issue: 4
Pages: 283 - 290
Delamination failure is encountered in prestressed concrete (PSC) shells. This type of failure occurs in the shell during prestressing, due to occurrence of cracking inside the shell parallel to its surface. One of the major factors is generation of radial tensile stress in the outer region of the shell thickness, having minimum intensity at the level of prestressing. This paper deals with an experimental study on a segment of a singly curved PSC shell to find out the radial stress pattern, across the thickness of the shell. The effect of presence of holes (due to orthogonal prestressing ducts) is also studied. The result reveals the tension-compression stress pattern across the shell. The presence of holes, whether in the outer region or inner region, contributes to a stress riser effect in the radial stress pattern. The experimental results compare well with the results predicted by a simple theoretical model.
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JournalJournal of Structural Engineering (Madras)
Open AccessNo