Recent Topics on Prestressing Steel
نویسندگان
چکیده
منابع مشابه
Influence of Residual Stress Field on the Fatigue Crack Propagation in Prestressing Steel Wires
This paper deals with the effect of several residual stress profiles on the fatigue crack propagation in prestressing steel wires subjected to tension loading or bending moment. To this end, a computer program was developed to evaluate the crack front evolution on the basis of the Walker law. Results demonstrate that the absence of residual stresses makes the crack propagate towards a preferent...
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متن کاملRelaxation of Prestressing Steel at Varying Strain and Temperature: Viscoplastic Constitutive Relation
Recent studies of excessive multidecade deflections of prestressed segmentally erected box girders revealed that more accurate predictions of the prestress loss due to steel relaxation are needed for the design of large-span creep-sensitive structures. In particular, the loss needs to be calculated as part of creep structural analysis, during which the strain of concrete to which the prestressi...
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ژورنال
عنوان ژورنال: Concrete Journal
سال: 2009
ISSN: 0387-1061,2186-2753
DOI: 10.3151/coj.47.11_3