Abstract
Abstract. In performance-based seismic design, ground-motion time histories are needed for analyzing dynamic responses of nonlinear structural systems. However, the number of ground-motion data at design level is often limited. In order to analyze seismic performance of structures, ground-motion time histories need to be either selected from recorded strong-motion database or numerically simulated using stochastic approaches. In this paper, a detailed procedure to select proper acceleration time histories from the Next Generation Attenuation (NGA) database for several cities in Taiwan is presented. Target response spectra are initially determined based on a local ground-motion prediction equation under representative deterministic seismic hazard analyses. Then several suites of ground motions are selected for these cities using the Design Ground Motion Library (DGML), a recently proposed interactive ground-motion selection tool. The selected time histories are representatives of the regional seismic hazard and should be beneficial to earthquake studies when comprehensive seismic hazard assessments and site investigations are unavailable. Note that this method is also applicable to site-specific motion selections with the target spectra near the ground surface considering the site effect.
Highlights
In performance-based earthquake engineering, groundmotion time histories are usually needed for analyzing the distribution of dynamic responses of nonlinear systems, such as site response or structural analysis
A recent technical guideline implemented by the US Nuclear Regulatory Commission (USNRC, 2007) prescribed the probabilistic seismic hazard analysis (PSHA) as the underlying approach to generate time histories for future earthquake-resistant designs
This paper aims to present a detailed procedure in selecting ground-motion time histories for major cities of Taiwan using the Design Ground Motion Library (DGML) interactive tool
Summary
In performance-based earthquake engineering, groundmotion time histories are usually needed for analyzing the distribution of dynamic responses of nonlinear systems, such as site response or structural analysis. With DSHA for these cities, several suites of time histories are selected from the Pacific Earthquake Engineering Research Center’s Generation Attenuation (NGA) strong-motion database (Chiou et al, 2008). Those selected motion suites are appropriate for general seismic designs, e.g., dynamic analysis of structures in these cities
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