Rocking shear wall foundations in regions of moderate seismicity
|
|
|||||||||||
Bibliographic Details
| Author(s): |
Jan A. Wium
Johann van der Merwe |
||||
|---|---|---|---|---|---|
| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Sustainable Infrastructure - Environment Friendly, Safe and Resource Efficient, Bangkok, Thailand, 9-11 September 2009 | ||||
| Published in: | IABSE Symposium Bangkok 2009 | ||||
|
|||||
| Page(s): | 66-75 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2009 | ||||
| DOI: | 10.2749/222137809796089034 | ||||
| Abstract: |
This paper presents an investigation to reduce the size of shear wall foundations for earthquake forces in region of moderate seismicity. The approach taken is to allow rocking of the shear wall foundation and to include the frame action of the structure to assist as lateral force resisting system. An initial feasibility study is presented where the shear wall foundation and the structural frame are theoretically modelled as a single degree of freedom system, subjected to base accelerations from recorded ground motions. An example building is studied with the shear wall foundation designed for 40%, 60%, 80% and 100% of the design overturning moment from the seismic event. Time history analyses are performed with input from five earthquakes. It is shown that the concept is feasible and the next phase will consist of improved modelling to allow for distribution of mass over the height of the structure as well as shear wall stiffness. |
||||
| Keywords: |
seismic design time history foundations shear wall structural frame moderate seismicity
|
||||