| Summary: | 碩士 === 國立臺北科技大學 === 土木與防災技術研究所 === 92 === It is a very difficult task to obtain the seismic response of the reinforced concrete bridge columns. This is because that the structural system will go into a nonlinear range under severe seismic ground motion. The nonlinear behavior of reinforced concrete members is very complicated since the load-displacement relation exhibits stiffness degradation, strength deterioration and pinching effect. Thus, it is very hard to accurately simulate the load-displacement relationship for reinforce concrete members. The pseudodynamic technique will be applied to yield the seismic responses of the reinforced concrete bridge columns since it avoids the use of a mathematical model to simulate the load-displacement relationship. This is because that the restoring force developed by the structure is experimentally measured during the test. Therefore, pseudodynamic test results are believed to be more reliable than numerical solution.
In this study, the program IDARC is used to analyze the seismic response of a reinforced concrete bridge column. At first, the hysteretic loops obtained from the cyclic loading test are simulated by IDARC program. Based on this simulation, some parameters used in the program can be determined. Next, both the section input method and moment-curvature input method are employed to compute the seismic responses of reinforced concrete bridge columns. These results are compared with the pseudodynamic test results so that the feasibility of the program can be confirmed. It seems that the numerical results computed from IDARC program are roughly consistent with the pseudodynamic test results although they did not match very well.
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