Analysis Of Asymmetrical Buildings With Base Isolator, Shear Wall And Bracing System Located At Near Fault Region Using Non Linear Time History

  Osama Ahmed,  Dr.s.Amaresh Babu

Engineering seismology and earthquake engineering building have a few complicated topics common to each of them, namely the portrayal of seismic motion near fault lines and its resulting effect on the lifespan of the structure. Near fault ground motion are knowns by its characteristics of large amplitude pulse with low frequency in both velocity and displacement time histories in the fault region of 16-20 km. The high input energy generated in the structure results in varied structural responses in comparing to far fault earthquake. Yet existing reports, for instance, ATC-40 (1997), FEMA-273 (1997), characterize a purpose behind seismic structure by considering near fault shaking effect for the change of elastic response spectra, they don't currently consider the amplified inelastic demands that may occur during the near fault shaking. As such, there is a need to look at and perceive the inelastic response of the structures in near fault territories. Non-Linear Time History Analysis (NL-THA) is the base of this study of asymmetrical structures in near-fault region by seeing the effects of the seismic resistance devices like, shear wall and bracings and base isolators on the seismic parameters (like base torsion & base shear and story drifts). RCC moment restricting housings of five, ten and fifteen stories was stacked with gravity loads (dead weight and live weight), static seismic tremor stacking and NL-THA was performed using ETABS 15. Four models were painstaking studied to test the effect of the seismic control devices in close inadequacy districts. Model one filled in as the basic model while model two executes shear dividers, model three had a base isolator participated in it and model four completes bracings. By studying the ground motion data of “Loma Prieta (1989)” seismic tremor information/data is used for performing the time history analysis. The results unveiled that for five and ten storied structures, to control most outrageous story displacement & story drift .Shear walls are considerably useful, however to control base shear and base torsion, base isolator are successful contraptions. For fifteen story non-symmetrical structures, base isolators are incredible devices for controlling all the seismic parameters in near fault ground motion.

Keywords- Non-Linear Time History Analysis, Near Fault Region and Seismic Control Devices

Unique Identification Number - IJEDR1904102
Page Number(s) - 596-610
Pubished in - Volume 7 | Issue 4 | December 2019
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Osama Ahmed,  Dr.s.Amaresh Babu,   "Analysis Of Asymmetrical Buildings With Base Isolator, Shear Wall And Bracing System Located At Near Fault Region Using Non Linear Time History", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.7, Issue 4, pp.596-610, December 2019, Available at :http://www.ijedr.org/papers/IJEDR1904102.pdf