الفهرس 
The Assumptions Used Defining the Behavior of the Section at Ultimate LoadOnly 14 pages are availabe for public view
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Abstract
The main objective of this study is to present the effect of prestressing force and induced prestressing moment on the ultimate moment capacity for the structurally determinate and indeterminate prestressed beams.
An analytical study was carried out for 33 structurally determinate internally bonded prestressed beams and 21 structurally determinate unbonded prestressed beams with different concrete compressive strength and different reinforcement ratios to determine the ultimate moment capacity.
A numerical study included non linear finite element modeling using “Tno-Diana” software was used to solve 5 statically determinate prestressed beams, which were previously tested experimentally. These models were used as a calibration models for the program also 60 statically indeterminate prestressed beams were solved using “Tno-Diana” program and ultimate moment capacity, ultimate deflection, ultimate concrete strain, ultimate prestressing steel strain and load deflection curves were determined.
This study introduces the conceptual design of prestressed beams at ultimate limit state. Proposed calculation method was introduced. Analytical studies were carried out to investigate the ultimate capacity of prestressed beams also non linear finite element models were developed.