| 英文摘要 |
The 1999 Chi-Chi earthquake has revealed the poor performance of the reinforced concrete(RC) school buildings in Taiwan. It has also indicated an urgent need of seismic evaluation and retrofit for the existing schools. In order to understand the behavior of a typical school building subjected to lateral loads, a series of in-situ test for two existing two-storey RC school buildings were carried out. Three types of lateral loading patterns were applied to these two frame specimens: monotonic static pushover, cyclic static pushover, and earthquake time history input. This paper presents the experimental program, test results and analytical assessment in the tests. The responses of free vibration, forced vibration and micro-tremor measurement were also recorded in order to identify the dynamic behavior of frame specimens. The experiments provide reliable and efficient observation of actual building behavior, especially the effects of the seismic performance of a school building subjected to cyclic lateral loading combined with pseudo dynamic test(PsD). Results of these tests are reported, analyzed and interpreted in this paper. Test results related to the effect of the decay of structural strength and stiffness induced by cyclic loading should be implemented in seismic evaluation procedure. This study also proposed an effective transformation relationship between capacity curves obtained from monotonic pushover tests and dynamic tests. |
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