Title:
Behavior of
Prestressed Composite Beams Using External Cables
Author : Moustafa Haroun Ali Ahmed Fakkar
Collection : M.Sc. Structural
Abstract:
The
concept of prestressing steel structures has not been widely considered,
despite a long and successful history of prestressing concrete members. Several
analytical and experimental studies of externally
prestressed composite beams were reported in literature. These researches did
not consider the effect of partial interaction between the concrete slab and
the steel beam on the behavior of prestressed beams. The slippage between the
cables and saddles was not analyzed in these researches. Also, the influence of
long-term effects of the concrete slab and the relaxation of the cables on the
behavior of externally prestressed beams with partial shear interaction was not
reported in these researches. All international codes did not give design guide
lines or design recommendations for externally prestressed composite beams with
partial shear interaction. Also, these codes did not give design
recommendations for the influence of long-term effects on the behavior of
prestressed composite beams with partial shear interaction. Thus, the objective
of this research is to deepen the understanding of the behavior of externally
prestressed composite beams by the several of parametric study. A theoretical investigation
was conducted using the finite element package COMSOL MUL TIPHYSICS. The
results of the finite element model were verified by checking with previous
researches in literature. In this research, some design guide lines and design
recommendations of composite prestressed beams will be presented.
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