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Keywords: pounding, separation distance, collision, mathematical formulation.

Summary

The occurrence of building pounding is one of the possible and important reasons for damage and even collapse of buildings during earthquakes. This phenomenon occurs when two adjacent buildings have a small gap between them providing insufficient separation distance. In past studies experimental and analytical analyses of building pounding have been investigated by many researchers. For this challenge, researchers have suggested different link element models between two adjacent buildings, to calculate the impact force; they have also presented different formula to obtain the best estimation of dissipated energy [1,2].

In this paper, two adjacent reinforced concrete one-storey concrete buildings were modelled using different link element models, to assess analytically the consequences of building pounding in spite of a pre-existing gap between buildings. The investigated structures were subjected to three different near-fault ground motions, whose records have been normalized to have an equal peak ground acceleration (PGA) and different frequency content. Multi-degree of freedom models are assessed by different numerical formulations. Finally, the results of this investigation are compared with the results of using a standard finite element analysis from the SAP2000 [3] software.

References

1: S.A. Anagnostopouls, "Equivalent Viscos Damping for Modeling Inelastic Impacts in Earthquake Pounding Problems", Earthquake Engineering and Structural Dynamic, 33(8), 897-902, 2004.
2: G.L. Cole, R.P. Dhakal, "the Effect of Diaphragm Wave Propagation on the Analysis of Pounding Structures", Proc. 2 nd Int. Confrence on computational method in structural dynamic an earthquake engineering (COMPADYN), Paper CD 200,Rhodes, Greece, 2009.
3: Computers and Structures, Inc., SAP2000, Version 8.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 99 PROCEEDINGS OF THE ELEVENTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: B.H.V. Topping Paper 286 Building Pounding Forces for Different Link Element Models R.C. Barros and S.M. Khatami Department of Civil Engineering, Faculty of Engineering of the University of Porto, Portugal doi:10.4203/ccp.99.286 purchase the full-text of this paper Full Bibliographic Reference for this paper R.C. Barros, S.M. Khatami, "Building Pounding Forces for Different Link Element Models", in B.H.V. Topping, (Editor), "Proceedings of the Eleventh International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 286, 2012. doi:10.4203/ccp.99.286 Keywords: pounding, separation distance, collision, mathematical formulation. Summary The occurrence of building pounding is one of the possible and important reasons for damage and even collapse of buildings during earthquakes. This phenomenon occurs when two adjacent buildings have a small gap between them providing insufficient separation distance. In past studies experimental and analytical analyses of building pounding have been investigated by many researchers. For this challenge, researchers have suggested different link element models between two adjacent buildings, to calculate the impact force; they have also presented different formula to obtain the best estimation of dissipated energy [1,2]. In this paper, two adjacent reinforced concrete one-storey concrete buildings were modelled using different link element models, to assess analytically the consequences of building pounding in spite of a pre-existing gap between buildings. The investigated structures were subjected to three different near-fault ground motions, whose records have been normalized to have an equal peak ground acceleration (PGA) and different frequency content. Multi-degree of freedom models are assessed by different numerical formulations. Finally, the results of this investigation are compared with the results of using a standard finite element analysis from the SAP2000 [3] software. References 1 S.A. Anagnostopouls, "Equivalent Viscos Damping for Modeling Inelastic Impacts in Earthquake Pounding Problems", Earthquake Engineering and Structural Dynamic, 33(8), 897-902, 2004. 2 G.L. Cole, R.P. Dhakal, "the Effect of Diaphragm Wave Propagation on the Analysis of Pounding Structures", Proc. 2 nd Int. Confrence on computational method in structural dynamic an earthquake engineering (COMPADYN), Paper CD 200,Rhodes, Greece, 2009. 3 Computers and Structures, Inc., SAP2000, Version 8. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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