The Research on the Analysis of the Flexural Behavior of Self-Compacting Concrete Beams
|關鍵字:||自充填混凝土;梁撓曲;共軛梁;彎矩 曲率;scc;Flexural Behavior;conjugated beam method;load-displacement|
The purpose of this study is to investigate the flexural behavior of self-consolidation concrete（SCC）beams under static load. The cross section of beam of moment-curvature relationship can be simulated by using the Xtract program, furthermore, the load-displacement relationship of the flexural behavior of the beam can be obtained, and then compared with the experimental values. A total of 32 beams were analyzed in this study: five were normal concrete beams and the rest were SCC beams. The amount of compression reinforcement, spacing of transverse reinforcement and the strength of transverse reinforcement were taken into consideration. The conclusions can be made from the results: 1.After comparing the flexural behavior of the experimental values and the values obtained by Xtract, it could be found that the failure behavior were similar. It showed that the load-displacement relationship of the beams could be obtained by using conjugated beam method. 2.Because of the consideration of the confined concrete, the ultimate moment of the beam calculated by Xtract program are closer to the real failure condition than from ACI code . 3.Under the condition that the strength of transverse reinforcements bellowed 420 MPa, the displacements and loads obtained by Xtract program are less than the experimental results. It implies that the displacements and loads obtained by Xtract program are conservative and on the safe side. 4.According to the results of analysis, the method of calculating the flexural strength OPC beams by using Xtract program also can be used in SCC beams.