| Author | Tan, Kai-chong |
| Call Number | AIT Thesis no. 692 |
| Subject(s) | Prestressed concrete beams
Prestressed concrete--Testing
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology,
Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | This investigation deals with the flexural behavior and deflection
analysis of prestressed concrete beams due to short-time loads. The analysis is based upon assumed stress-strain curves for the concrete and the prestressing steel. It is limited to beams with tension steel only.
Two methods of analysis are presented to calculate the deflection of bonded prestressed concrete beams. The first method utilizes the true moment-curvature curve of the beam while the second method is approximate whereby the moment-deflection curve is assumed to be bi-linear,
consisting of a straight line from zero to cracking and another straight line from cracking to ultimate condition. In both methods of analysis the tensile strength of the concrete is considered. With the moment-curvature known the deflections of prestressed concrete beams are derived by conjugate beam method. The theoretical results
are compared with experimental values reported earlier and the comparison was found to be satisfactory. This study also revealed that short-time
deflection of under-reinforced bonded prestressed concrete beams can be predicted quite accurately by the first method of analysis which is based on the true moment-curvature curve whereas over-reinforced beams showed good correlation with the approximate bi-linear moment-deflection curve. |
| Year | 1974 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Pama, Ricardo P. |
| Scholarship Donor(s) | Government of the United Kingdom |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1974 |
