Earthquake–induced pounding on response of adjacent structures in series: experimental and numerical study

Saher El-Khoriby; Ayman Seleemah; Hytham Elwardany; Robert Jankowski

Earthquake–induced pounding on response of adjacent structures in series: experimental and numerical study

Abstract

Pounding between structures in series during earthquakes may cause serious damage in the structur-al elements. The aim of this paper is to show the results of an experimental and numerical study that is focused on pounding between more than two structures which may be called "structures in series". In this study, the shaking table experiments, as well as the numerical analyses, were performed using three tower models including rigid and flexible towers with different configurations and different gap distances under several earthquake excitations. The results show that pounding may affect the behav-iour of the structures significantly. They also indicate that the rigid towers are more influenced by pounding than the flexible ones. Moreover, increasing or decreasing the gap distance may lead to in-crease or decrease in the response under different earthquakes with no specific trend. Furthermore, the optimal gap size has been found to be either the distance which prevents pounding or the zero gap. The results of the numerical study clearly indicate that earthquake induced pounding may result in consid-erable permanent deformation of the inelastic structures which changes the seismic gap distance be-tween the towers resulting in a new gap distance. This new gap distance changes the pattern of the pounding in the series of towers. Moreover, increasing the steel yielding stress changes the pattern of pounding as it decreases the permanent displacement and increases the number of poundings between the adjacent towers.

Authors (4)

Saher El-Khoriby
- Tanta University, Egipt Faculty of Engineering
Ayman Seleemah
- Tanta University, Egipt Faculty of Engineering
Hytham Elwardany
- Tanta University, Egipt Faculty of Engineering
Robert Jankowski prof. dr hab. inż.

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Category:: Conference activity
Type:: publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
Title of issue:: International Conference on Advances in Structural and Geotechnical Engineering strony 1 - 20
Language:: English
Publication year:: 2015
Bibliographic description:: El-Khoriby S., Seleemah A., Elwardany H., Jankowski R.: Earthquake–induced pounding on response of adjacent structures in series: experimental and numerical study// International Conference on Advances in Structural and Geotechnical Engineering/ : , 2015, s.1-20
Verified by:: Gdańsk University of Technology