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- Title
Accuracy of three-dimensional seismic ground response analysis in time domain using nonlinear numerical simulations.
- Authors
Liang, Fayun; Chen, Haibing; Huang, Maosong
- Abstract
To provide appropriate uses of nonlinear ground response analysis for engineering practice, a three-dimensional soil column with a distributed mass system and a time domain numerical analysis were implemented on the OpenSees simulation platform. The standard mesh of a three-dimensional soil column was suggested to be satisfied with the specified maximum frequency. The layered soil column was divided into multiple sub-soils with a different viscous damping matrix according to the shear velocities as the soil properties were significantly different. It was necessary to use a combination of other one-dimensional or three-dimensional nonlinear seismic ground analysis programs to confirm the applicability of nonlinear seismic ground motion response analysis procedures in soft soil or for strong earthquakes. The accuracy of the three-dimensional soil column finite element method was verified by dynamic centrifuge model testing under different peak accelerations of the earthquake. As a result, nonlinear seismic ground motion response analysis procedures were improved in this study. The accuracy and efficiency of the three-dimensional seismic ground response analysis can be adapted to the requirements of engineering practice.
- Subjects
SEISMIC response; TIME-domain analysis; COMPUTER simulation; NONLINEAR theories; FINITE element method
- Publication
Earthquake Engineering & Engineering Vibration, 2017, Vol 16, Issue 3, p487
- ISSN
1671-3664
- Publication type
Article
- DOI
10.1007/s11803-017-0401-1