Session 01: Case Histories of Unexpected Behavior and Failure of Shallow, Deep and Other Foundations
Location
Arlington, Virginia
Date
13 Aug 2008, 5:15pm - 6:45pm
Abstract
As high rises are built or designed for in areas of high seismic activities, it is critical to examine their seismic responses using analysis code that reveals a more realistic view of the behavior of these structures for their performance under strong seismic shaking. To understand the seismic soil-structure interaction effects, a 33-story building and a 20-story building were subjected to seismic response analysis using SSI-3D. To reflect the evolution of SSI effects, analyses were performed for the cases with rigid base, flexible base with linear foundation springs, flexible base with linear soil, flexible with nonlinear springs, and the full SSI analysis of flexible base with nonlinear soils. The last case depicts the most realistic SSI responses of the high rise. Results of analyses presented in this article include: periods, base shear, and the displacement of the top of the buildings. It was observed that the top displacements increase and the base shears decrease as the base become more flexible for the buildings with regular shape. For the buildings with irregular shape, the above observation is no longer true.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Nghiem, Hien and Chang, Nien-Yin, "Soil-Structure Interaction Effects of High Rise Buildings" (2008). International Conference on Case Histories in Geotechnical Engineering. 30.
https://scholarsmine.mst.edu/icchge/6icchge/session_01/30
Soil-Structure Interaction Effects of High Rise Buildings
Arlington, Virginia
As high rises are built or designed for in areas of high seismic activities, it is critical to examine their seismic responses using analysis code that reveals a more realistic view of the behavior of these structures for their performance under strong seismic shaking. To understand the seismic soil-structure interaction effects, a 33-story building and a 20-story building were subjected to seismic response analysis using SSI-3D. To reflect the evolution of SSI effects, analyses were performed for the cases with rigid base, flexible base with linear foundation springs, flexible base with linear soil, flexible with nonlinear springs, and the full SSI analysis of flexible base with nonlinear soils. The last case depicts the most realistic SSI responses of the high rise. Results of analyses presented in this article include: periods, base shear, and the displacement of the top of the buildings. It was observed that the top displacements increase and the base shears decrease as the base become more flexible for the buildings with regular shape. For the buildings with irregular shape, the above observation is no longer true.
