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Authors
Affiliations
1 Department of Civil Engineering, Jawaharlal Nehru Engineering College, BAMU Aurangabad-431001, Maharashtra, IN
Source
International Journal of Engineering Research, Vol 5, No SP 3 (2016), Pagination: 578-582
Abstract
The adjacent buildings collide and collapse during moderate to strong ground vibrations cause by earthquakes.Actually, the separation distance of many buildings is an adequate to accommodate their relative motions, so building vibrate out of phase and collapse. Among the possible structural damages the seismic induced pounding has been commonly observed phenomenon. Pounding is one of the main causes of severe building damages in earthquake. While seismic pounding can be prevented by providing adequate safe code specified separation distances, sometimes getting of required safe separations is not possible in metropolitan areas because buildings are built very close to each other due to high land value, limited availability of land space, mitigation of pounding phenomenon may be categorized as improvement in stiffness or by damping. In this study the stiffness improvement measure is studied in detail. The improvement in lateral stiffness of building can be achieved by providing shear walls or by providing diagonal bracing. Both these measures are studied here. In case of unequal heights of the building separated by expansion gap smaller building is naturally stiffer as far as lateral resistance is concerned. The pounding can be effectively controlled using stiffness modification for building, however the stiffness modification using shear wall or bracing are found to be more effective when they are incorporated for the taller building.
Keywords
Seismic Pounding, Shear Wall, Bracing, Nonlinear Time History Analysis.
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