Seismic Evaluation and Fragility Curves of the Design Example of the Civil 404-100 Code

Seismic Evaluation and Fragility Curves of the Design Example of the Civil 404-100 Code

In this report, incremental dynamic analysis (IDA) is performed on a sample new ten-story building based on the civil 404-100 concrete engineering design code, in order to study its seismic performance. Additionally, from the results of IDA, a seismic fragility curve is built in order to check whether the performance target is satisfied under the estimated performance target earthquake. From the analysis results, a seismic evaluation based on the capacity spectrum method yields a conservative result as applied to the x-direction frame-and-shear-wall binary system with smaller period. However, a non-conservative evaluation result is obtained when applied to the y-direction ductile moment-resisting frame with a larger period. IDA combined with fragility analysis requires extensive computation time for nonlinear dynamic analysis; however, it is an effective tool for examining the seismic performance of structures with specific seismic intensity.