10-10-2014, 02:13 PM
This thesis is an attempt to study the response of holding-down bolts of electrical
equipment subjected to earthquake ground motions in horizontal and vertical
directions. The translational and torsional effects which are created due to the
eccentricity of mass center from the stiffness center, also obtained. The
equipment is idealized as a single mass supported on the 4 bolts. A bilinear
hysteretic force and displacement relationship has been assumed. The response
of the idealized equipment is studied for horizontal and vertical earthquake
ground motions input. The transnational response in vertical and horizontal
directions and torsional response in vertical plane is evaluated. The influence of
various parameters viz. eccentricity, stiffness, viscous damping, intensity of the
earthquake has been looked into Comparison of the results with Response
Spectrum and Seismic Coefficient method is done for some cases.