NUMERICAL SIMULATION OF BLAST WAVE PROPAGATION IN LAYERED SOIL FEATURING SOIL-STRUCTURE INTERACTION

2017 ◽  
Author(s):  
M. Abir ◽  
D. Arumugam ◽  
B. Dhana Sekaran ◽  
T. R. Subash
Keyword(s):  
Numerical Simulation ◽  
Wave Propagation ◽  
Blast Wave ◽  
Soil Structure ◽  
Layered Soil ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Blast Wave Propagation

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.

Large-Scale Seismic Response Analysis of a Super-High-Rise-Building Fully Considering the Soil–Structure Interaction Using a High-Fidelity 3D Solid Element Model

2016 ◽  
Vol 10 (05) ◽  
pp. 1640014 ◽  
Author(s):  
Tomoshi Miyamura ◽  
Seizo Tanaka ◽  
Muneo Hori
Keyword(s):  
Wave Propagation ◽  
Soil Structure ◽  
Large Scale ◽  
Soil Structure Interaction ◽  
Response Analysis ◽  
High Fidelity ◽  
Seismic Response Analysis ◽  
Structure Interaction ◽  
High Rise ◽  
Propagation Analysis

In the present study, a large-scale seismic response analysis of a super-high-rise steel frame considering the soil–structure interaction is conducted. A high-fidelity mesh of a 31-story super-high-rise steel frame and the ground underneath it, which is made completely of hexahedral elements, is generated. The boundary conditions that are consistent with the solution of the one-dimensional (1D) wave propagation analysis are imposed on the side and bottom surfaces of the ground. The waves are assumed to propagate in the vertical direction. The 1D wave propagation analysis is conducted under the excitation of the JR Takatori record of the 1995 Hyogoken-Nanbu earthquake. The parallel large-scale analysis is performed using the K computer, which is one of the fastest supercomputers in the world. The results of the models with and without the ground are compared, which reveals that the results obtained by these two models are very similar because the ground is assumed be sufficiently hard in the present study.

Numerical simulation of dynamic soil–structure interaction in shaking table testing

2008 ◽  
Vol 28 (6) ◽  
pp. 453-467 ◽  
Author(s):  
Dimitris Pitilakis ◽  
Matt Dietz ◽  
David Muir Wood ◽  
Didier Clouteau ◽  
Arezou Modaressi
Keyword(s):  
Numerical Simulation ◽  
Soil Structure ◽  
Shaking Table ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Shaking Table Testing
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