Seismic Analysis of Pounding in Building Structures

International Journal of Research and Scientific Innovation (IJRSI) | Volume V, Issue V, May 2018 | ISSN 2321–2705

Seismic Analysis of Pounding in Building Structures

Surya C S^1*, Jencysara Kurian²

^1,2Department of Civil Engineering, Amal Jyothi College of Engineering, Kanjirappally, Kerala, India

Abstract: – Building pounding occurs when two adjacent building collide each other. Earthquake can cause pounding when adjacent buildings have little or no gap. The building pounding can be reduced in different ways, one of the main factor considered in that is the separation gap. Proper separation gap reduce pounding in buildings but on the other hand due to high urbanisation and less availability of land in future lead the designer to construct building in less separation gap. This will lead to structural pounding, but by using proper steps the damage caused by this can be reduced. This study explains the reduction of pounding in buildings by the use of bracings(X, V& Diagonal) and dampers. The results are compared with local bracing systems. Non-linear analysis was performed in this study. After the comparison of the results the story displacement was found to be reduced considerably by using bracing systems.

Key words: separation gap, pounding, non-linear analysis

I. INTRODUCTION

As a result of high urbanisation, the need to build closely spaced buildings forces the designer to take the consideration earthquake induced interaction between insufficiently separated structures. Building pounding occur when two adjacent buildings collide each other. Earthquake can cause pounding when adjacent buildings have little or no gap separation. Figures below shows the change in loads can lead to catastrophic collapse of one or both buildings.

Two types of pounding can occur

1. Local damage at the point of impact
2. Global damage resulting from the energy and momentum transfer caused by collision

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