Paper Title:
Large-Scale Two-Dimensional Nonlinear Analysis on Seismic Effect of Fuzhou Basin
  Abstract

So far, nonlinear analyses on seismic effect of large-scale basin model have rarely been reported. Based on the explicit finite element method and 32 CPU parallel computing cluster platform of ABAQUS, a two-dimensional(2D) large-scale refined model for Fuzhou Basin is established using a nonlinear analytical method in the time domain. Both the peak ground acceleration (PGA) and acceleration response spectra of ground surface are emphatically analyzed. Meanwhile, the results by one-dimensional equivalent linearization method in frequency domain are added for the sake of contrast. The study results show that the PGA of ground surface will be obviously amplified when compared with the peak acceleration of bedrock ground motion; and the ground acceleration response spectra of Fuzhou Basin may appear a double-peak or multi-peak phenomenon. Moreover, the 2D large-scale model can reflect amplification effect of Fuzhou Basin soil to bedrock ground motion in particular periods; In addition, the acceleration responses of ground surface right above the bedrock valleys and crests appear larger than the other positions adjacent to them, these phenomenon are generally manifested as focusing effect and amplification effect, which are thought to be produced by the recently deposited soils in the basins as well as the special soil layer such as lens. In general, the PGA of ground surface obtained by 2D model present to be greater than that obtained by the one-dimensional model.

  Info
Periodical
Edited by
Xuejun Zhou
Pages
1426-1433
DOI
10.4028/www.scientific.net/AMM.90-93.1426
Citation
D. D. Jin, G. X. Chen, F. F. Dong, "Large-Scale Two-Dimensional Nonlinear Analysis on Seismic Effect of Fuzhou Basin", Applied Mechanics and Materials, Vols. 90-93, pp. 1426-1433, 2011
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Wei Zhang, Min Wei Zhu, Tao Tao Shan
Abstract:In this paper, three typical bedrock long-period seismic waves and two commonly used waves were selected for three dimensional seismic...
3904
Authors: Jian Ping He, Wei Zhong Chen
Abstract:The natural frequency characteristics of field has the remarkable influence to the field acceleration response. This paper realized the free...
1531
Authors: Ji Hua Chen, Ya Hui Yang, Wei Wang
Chapter 6: Seismic Engineering
Abstract:Along with the rapid development of city, the research on seismic effect of the sites is gradually recognized. In this paper earthquake...
1376