Impact between buildings during earthquakes

  • A. J. Carr University of Canterbury, Christchurch, New Zealand
  • P. J. Moss University of Canterbury, Christchurch, New Zealand

Abstract

A numerical study of the parameters affecting the impact between adjacent buildings subjected to seismic excitation has been carried out in an endeavour to quantify the relative importance of the structural parameters.

A two-dimensional inelastic dynamic analysis program was used to model various combinations of adjacent framed structures subjected to ground accelerograms and where the frames are assumed to be separated by distances sufficiently small as to permit contact. Collisions were modelled using special contact elements which will transmit forces when the specified gap has been closed.

It will be shown that where there are adjoining frames are of different heights, large increases in response are observed in the upper part of the taller frame. Pounding can also amplify the effects of localised changes in stiffness and strength up the frame-, producing member demands greatly in excess of the normal design values.

References

Davis, R.O. 1992. Pounding of Buildings Modelled by an Impact Oscillator. Earthquake Engineering and Structural Dynamics. 21:253-274. DOI: https://doi.org/10.1002/eqe.4290210305

Maison, B.F. and Kasai,K. 1990. Analysis for a Type of Structural Pounding. J. Struct. Eng. 116(4):957-975.

Kasai, K., Maison, B.F. and Patel, D.J. 1990. An Earthquake Analysis for Buildings Subjected to a Type of Pounding. Proc. 4th U.S. National Conf on Earthquake Engineering.

Maison, B.F. and Kasai,K. 1992. Dynamics of Pounding When Two Buildings Collide. Earthquake Engineering and Structural Dynamics 21:771-786. DOI: https://doi.org/10.1002/eqe.4290210903

Jeng, V., Kasai, K. and Maison, B.F. 1992. A Spectral Difference Method to Estimate Building Separations to Avoid Pounding. Earthquake Spectra 8(2). DOI: https://doi.org/10.1193/1.1585679

Sinclair, K.M. 1993. The Response of Multistorey Frames to Seismic Pounding. M.E. Report, University of Canterbury.

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Carr, A.J. and Moss, P.J. 1994. Structural Damping Models for Non-Linear Seismic Analysis. Proc. 1994 NZNSEE Conference.

Published
1994-06-30
How to Cite
Carr, A. J., & Moss, P. J. (1994). Impact between buildings during earthquakes. Bulletin of the New Zealand Society for Earthquake Engineering, 27(2), 107-113. https://doi.org/10.5459/bnzsee.27.2.107-113
Section
Articles

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