Evaluation Of Response Reduction Factor(R) For High Rise Buildings
Response reduction factor (R), high rise building, and pushover analysis.
The non-linear response of structure is not incorporated in design philosophy but its effect is incorporated by using appropriate response redu ction factor is to de-amplify the seismic force and incorporate ction factor (R). The concept of response redu nonlinearity with the help of over strength, redundancy, damping and ductility. The response reduction factor (R) reflects the capacity of structure to dissipate energy through inelastic behaviour. Response reduction factors play a key, but controversial, role in the seismic design process in India. No other parameter in the design base shear equation impacts the design actions in a seismic framing system as does the value assigned to R. Despite the profound influence of R on the seismic design process, and ultimately on the seismic performance of buildings in India, no scientific basis exists for the values of R adopted in seismic design codes in India. Also, it does not specify any reduction in the response reduction factor on account of Zone factor, ductility of structure, over strength of structure, height of structure, irregularity (vertical or plan-irregularity) of structure, lack of quality control and poor workmanship during the construction, not following the ductile detailing requirements exactly as per the guidelines etc. In present work efforts has been made in estimating the actual value of response reduction factor (R) for reinforced concrete high rise special moment resisting frame (SRMF) Using Non Linear Static Analysis (pushover analysis) for safe and economical design and compare it with codal values.
Article Details
Unique Paper ID: 150154

Publication Volume & Issue: Volume 7, Issue 3

Page(s): 135 - 138
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