Nonlinear Static and Dynamic Analysis of the Design Example of Civil 404-100

Nonlinear Static and Dynamic Analysis of the Design Example of Civil 404-100

In Taiwan, engineers often use nonlinear static analysis based on the capacity spectrum method, also called pushover analysis, for detailed seismic evaluation procedures. The performance target ground acceleration is used to compare with the site’s peak ground acceleration of the design earthquake with a 475-year return period to evaluate its seismic capacity. As stated in FEMA 440, the evaluated results are conservative, with relatively short periods for low-rise buildings. However, for mid-rise buildings, the single-mode pushover analysis cannot simulate the structure’s response during the earthquake. If nonlinear static analysis is still used as the seismic evaluation tool for mid-rise buildings, its conservation must be studied. In this report the nonlinear dynamic analyses of a design example of the concrete engineering design code Civil 404-100 are used to study the conservation of the capacity spectrum method applied to a newly designed ten-story building. From the analysis results of the structure models, the capacity spectrum method is used to estimate the roof displacement or the maximum inter-story drift of a newly designed ten-story building with a large safety factor.