An Investigation into the Effect of Seismic Zones and Fundamental Time Period of Elevated RC Water Tank on The Response Reduction Factor

Author(s):

Shrirang D. Borkar , YCCE, Nagpur; Atul Kurzekar, YCCE, NAGPUR; V. G. Meshram, YCCE, NAGPUR

Keywords:

Response reduction factor, Seismic design, static nonlinear pushover analysis

Abstract:

The most important design key of earthquake resistance design of structures is that the structure should not collapse but rupture to the structural elements is acceptable. Response reduction factor is the factor by which the real design base shear force should be reduced, to obtain the design lateral force. The response reduction factor is depends on Over strength, Ductility, Redundancy. In the present study efforts are made to estimate the response reduction factor of RC framed staging elevated water tanks having staging height of 15 m, 18 m and 21 m but having varying capacities. The special effects of seismic zone and fundamental time period of water tank on the Response reduction factor are also discuss. Displacement controlled nonlinear pushover analysis is used to estimate the base shear capacity and ductility of tanks. It is found that value of R for elevated water tank is extensively affected by the time period, seismic zone and capacity of tanks. Observations during many earthquakes have shown that engineering structures are it capable to sustain earthquake forces considerably larger than those they were designed for without damage. The seismic codes now absolutely depend on such reserve strength. The feasible sources of such strength are summarized and it is reasoned that a more balanced origin for design would be to account for such sources in assessing the capacity rather than in reducing the design loads.

Other Details:

Manuscript Id	:	IJSTEV2I10185
Published in	:	Volume : 2, Issue : 10
Publication Date	:	01/05/2016
Page(s)	:	643-653

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