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Response of pure-friction sliding structures to bi-directional harmonic ground motion

DSpace at IIT Bombay

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Title Response of pure-friction sliding structures to bi-directional harmonic ground motion
 
Creator JANGID, RS
 
Subject torsionally coupled structure
isolation systems
seismic response
support motion
base-isolation
excitation
sliding structures
base isolation
pure-friction
bi-direction
interaction
harmonic motion
earthquake
system parameters
 
Description The response of structures with sliding support to bi-directional (i.e. two horizontal components) harmonic ground motion is investigated. The frictional forces mobilized at the sliding support are assumed to have the ideal coulomb-friction characteristics. The coupled differential equations of motion of the sliding structure in two orthogonal directions are solved in the incremental form using Newmark's method with iterations. The iterations are required due to dependence of the frictional forces on the response of the system. The responses of the system with bi-directional interaction are compared with those without interaction (2D idealization in two orthogonal directions) in order to investigate the effects of bi-directional interaction of frictional forces at the sliding supports. It has been shown that effects of bi-directional interaction are significant and should be included for the effective design of sliding structures. Further, if the effects of bi-directional interaction of frictional forces are neglected then the sliding base displacement will be underestimated which is crucial from the design point of view. In addition to harmonic ground motion the significant effects of bi-directional interaction are also observed for selected real earthquake ground excitations. Copyright (C) 1996 .
 
Publisher ELSEVIER SCI LTD
 
Date 2011-07-22T12:22:14Z
2011-12-26T12:52:25Z
2011-12-27T05:37:27Z
2011-07-22T12:22:14Z
2011-12-26T12:52:25Z
2011-12-27T05:37:27Z
1997
 
Type Article
 
Identifier ENGINEERING STRUCTURES, 19(2), 97-104
0141-0296
http://dx.doi.org/10.1016/S0141-0296(96)00055-7
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6224
http://hdl.handle.net/10054/6224
 
Language en