Prestressed Concrete Failures Due to Uplift

by Wimal Suaris, (M.ASCE), Univ of Miami, Coral Gables, United States,



Document Type: Proceeding Paper

Part of: Structures Congress XII

Abstract:

The paper presents some examples of prestressed concrete DOUBLE-TEE (DT) failures caused by hurricane Andrew. The DT's failures was mainly due to the negative moment created by uplift. In some instances a portion of the flange and the stem was torn away, while in other cases, the DT's collapsed altogether. In some instances the uplift was large enough for the beams to be airborne as the anchorage provided was inadequate. Flange failures were also common where DT flanges were used as overhangs with sparse reinforcement.



Subject Headings: Prestressing | Prestressed concrete | Material failures | Failure analysis | Uplifting behavior | Structural failures | Wind pressure | Foundations

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