Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Numerical study on site response considering ground motion spatial variation
Abstract Identical support excitation (ISE) of ground motion has been utilized to study the site response, whereas, to a large-scale site, multiple support excitation (MSE) considering the ground motion spatial variation may be more applicable. In this paper, the spatially varying earthquake ground motions (SVEGMs) were simulated first. Then, a large-scale four-layered free-field model was established using ABAQUS. Taking ISE and MSE into account, the significant durations of acceleration responses and shear wave velocities at many observation points were obtained. Comparing the results under MSE with those under ISE, it was shown that: i) the significant durations of acceleration responses under MSE were shorter than those under ISE; ii) even though the input peak ground acceleration (PGA) for MSE is lower, the shear wave velocity under MSE is not necessarily higher. Therefore, the spatial variation of ground motion may have important influence on the seismic response of large-scale site.
Highlights Site response under spatially varying seismic motions exhibits significant spatial non-uniformity. The significant duration of acceleration response under MSE is shorter than that under ISE. Even though the input PGA is lower, the shear wave velocity under MSE is not necessarily higher than that under ISE. The spatial variation of ground motion may have important influence on the seismic response of large-scale site.
Numerical study on site response considering ground motion spatial variation
Abstract Identical support excitation (ISE) of ground motion has been utilized to study the site response, whereas, to a large-scale site, multiple support excitation (MSE) considering the ground motion spatial variation may be more applicable. In this paper, the spatially varying earthquake ground motions (SVEGMs) were simulated first. Then, a large-scale four-layered free-field model was established using ABAQUS. Taking ISE and MSE into account, the significant durations of acceleration responses and shear wave velocities at many observation points were obtained. Comparing the results under MSE with those under ISE, it was shown that: i) the significant durations of acceleration responses under MSE were shorter than those under ISE; ii) even though the input peak ground acceleration (PGA) for MSE is lower, the shear wave velocity under MSE is not necessarily higher. Therefore, the spatial variation of ground motion may have important influence on the seismic response of large-scale site.
Highlights Site response under spatially varying seismic motions exhibits significant spatial non-uniformity. The significant duration of acceleration response under MSE is shorter than that under ISE. Even though the input PGA is lower, the shear wave velocity under MSE is not necessarily higher than that under ISE. The spatial variation of ground motion may have important influence on the seismic response of large-scale site.
Numerical study on site response considering ground motion spatial variation
Yao, Erlei (Autor:in) / Wang, Suyang (Autor:in) / Ruan, Bin (Autor:in) / Miao, Yu (Autor:in) / Zhu, Luhua (Autor:in)
28.08.2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Study on the Simulation of Spatial Variable Seismic Ground Motion Considering Local Site Convergence
| British Library Conference Proceedings | 2012
Effect of site response on spatial variability of ground motion
| British Library Conference Proceedings | 1996
Implications of Spatial Variation of Ground Motion on the Seismic Response of Bridges: Case Study
| British Library Conference Proceedings | 1997