A coupling model of FE-BE-IE-IBE for nonlinear layered soil-structure interactions

1998 ◽  
pp. 293-312
Author(s):  
Zhang Chuhan ◽  
Wang Guanglun ◽  
Chen Xinfeng
Keyword(s):  
Soil Structure ◽  
Coupling Model ◽  
Layered Soil

State-of-the-Art Techniques for Seismic Soil-Structure Interaction Analysis of Steel Gravity Structures

2014 ◽  
Author(s):  
Frederick Tajirian ◽  
Mansour Tabatabaie ◽  
Basilio Sumodobila ◽  
Stephen Paulson ◽  
Bill Davies
Keyword(s):  
Soil Structure ◽  
State Of The Art ◽  
Interaction Analysis ◽  
Layered Soil ◽  
Soil Structure Interaction ◽  
Soil System ◽  
Cyclonic Storm ◽  
Structure Interaction ◽  
Analysis Methods ◽  
Moderate Seismicity

The design of steel jacket fixed offshore structures in zones of moderate seismicity is typically governed by Metocean loads. In contrast the steel gravity structure (SGS) presented in this paper, is a heavy and stiff structure. The large mass results in foundation forces from seismic events that may exceed those created by extreme cyclonic storm events. When computing the earthquake response of such structures it is essential to account for soil-structure interaction (SSI) effects. Seismic SSI analysis of the SGS platform was performed using state-of-the-art SSI software, which analyzed a detailed three-dimensional model of the SGS supported on layered soil system. The results of this analysis were then compared with those using industry standard impedance methods whereby the layered soil is replaced by equivalent foundation springs (K) and damping (C). Differences in calculated results resulting from the different ways by which K and C are implemented in different software are presented. The base shear, overturning moment, critical member forces and maximum accelerations were compared for each of the analysis methods. SSI resulted in significant reduction in seismic demands. While it was possible to get reasonable alignment using the different standard industry analysis methods, this was only possible after calibrating the KC foundation model with software that rigorously implements SSI effects. Lessons learned and recommendations for the various methods of analysis are summarized in the paper.

scholarly journals Isotropic layered soil–structure interaction caused by stationary random excitations

2009 ◽  
Vol 46 (3-4) ◽  
pp. 455-463 ◽  
Author(s):  
Q. Gao ◽  
J.H. Lin ◽  
W.X. Zhong ◽  
W.P. Howson ◽  
F.W. Williams
Keyword(s):  
Soil Structure ◽  
Layered Soil ◽  
Soil Structure Interaction ◽  
Structure Interaction

scholarly journals Coupled effects of canal lining and multi-layered soil structure on canal seepage and soil water dynamics

2012 ◽  
Vol 430-431 ◽  
pp. 91-102 ◽  
Author(s):  
Liqiang Yao ◽  
Shaoyuan Feng ◽  
Xiaomin Mao ◽  
Zailin Huo ◽  
Shaozhong Kang ◽  
...  
Keyword(s):  
Soil Water ◽  
Soil Structure ◽  
Layered Soil ◽  
Water Dynamics ◽  
Soil Water Dynamics ◽  
Canal Seepage
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