A procedure to select ground-motion time histories for deterministic seismic hazard analysis from the Next Generation Attenuation (NGA) database

Abstract

Abstract. In performance-based seismic design, groundmotion 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.

Numerical modelling of the seismic response of gentle slopes in Southeastern Brazil

“…The use of non-local ground motions for seismic hazard analysis has been reported in the literature. For example, Huang et al, 2017 developed a procedure for selecting ground-motion time histories for seismic hazard analysis for several cities in Taiwan using the NGA database. Based on the selection of earthquakes, they concluded that records from local earthquakes do not necessarily match the target spectra from the hazard analyses, and a more suitable match could be achieved by using non-local ground motions.…”

Procedimiento Para Selección De Acelerogramas Para Estudios De Fragilidad en Puentes Típicos De Argentina

“…En atención a lo indicado, en el presente estudio se aplicará el método de escalado de registros sísmicos reales que representen la sismicidad de la región investigada. Por ejemplo, este criterio se siguió para la selección de registros apropiados para la realización de estudios sísmicos en diversas ciudades de Taiwán (Huang et al, 2017).…”

“…Siguiendo a Huang et al (2017), hay diversos algoritmos de selección de movimientos del terreno disponibles en la literatura (Baker, 2010;Jayaram et al, 2011;Wang, 2011). Una de las herramientas propuestas más versátiles lo constituye la aplicación web de la base de datos de movimientos del terreno del PEER (Pacific Earthquake Engineering Research Center's) -Next Generation Attenuation (NGA).…”

“…Por ejemplo, si se aplica un excesivo rango de valores para los factores de escala, la serie de registros seleccionados podría resultar en una distribución marcadamente sesgada respecto de otras características de los movimientos del terreno, tales como la Duración y la Intensidad de Arias, las cuales no pueden ser representadas por el espectro objetivo. Por lo tanto, para el procedimiento de selección, en este trabajo asignamos un rango estrecho para los factores de escala, entre 0.4 y 2.5 según las recomendaciones de Wang et al (2015) (Huang et al, 2017).…”

Visualization of Correlation for Air Pollution Time Series using TAQMN Data

“…It has hourly data set and has been converted into a daily data set by averaging hourly data per day. We concentrate 6 major pollutants such as Nitrogen dioxide (NO 2 ), Ozone (O 3 ), Carbon monoxide (CO), Sulfur dioxide (SO 2 ), PM 2.5 < 2.5 micrometers in diameter, PM 10 For the quality check, the air quality monitoring data were processed to facilitate the city-based cross-correlation analysis [11]. First, for each city the concentration of the daily pollutant was calculated by averaging the hourly data from all stations within that city.…”