Structural Engineering and Mechanics

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Modelling of seismically induced storey-drift in buildings

  • Lam, Nelson (Department of Civil & Environmental Engineering, University of Melbourne) ;
  • Wilson, John (Faculty of Engineering and Industrial Science, Swinburne University of Technology) ;
  • Lumantarna, Elisa (Department of Civil & Environmental Engineering, University of Melbourne)
  • Received : 2009.02.07
  • Accepted : 2010.02.11
  • Published : 2010.07.10
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Abstract

This paper contains detailed descriptions of a dynamic time-history modal analysis to calculate deflection, inter-storey drift and storey shear demand in single-storey and multi-storey buildings using an EXCEL spreadsheet. The developed spreadsheets can be used to obtain estimates of the dynamic response parameters with minimum input information, and is therefore ideal for supporting the conceptual design of tall building structures, or any other structures, in the early stages of the design process. No commercial packages, when customised, could compete with spreadsheets in terms of simplicity, portability, versatility and transparency. An innovative method for developing the stiffness matrix for the lateral load resistant elements in medium-rise and high-rise buildings is also introduced. The method involves minimal use of memory space and computational time, and yet allows for variations in the sectional properties of the lateral load resisting elements up the height of the building and the coupling of moment frames with structural walls by diaphragm action. Numerical examples are used throughout the paper to illustrate the development and use of the spreadsheet programs.

Keywords

References

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