International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 01 | Jan 2024
p-ISSN: 2395-0072
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STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE Atul B.Pujari1, Swarupa Nawale2 1. Professor, Department of Civil Engineering, KJEI’s KJ College of Engineering & Management Research, Pune,
Maharashtra, India. 2. PG Student, Department of Civil Engineering, KJEI’s KJ College of Engineering & Management Research, Pune,
Maharashtra, India. --------------------------------------------------------------------***---------------------------------------------------------------------(R). In seismic design, the seismic coefficient method Abstract: An important consideration in the design of structures is seismic analysis. In seismic design, the strength and ductility of frame members depend on the reduction factor (R). In this plan, different heights of our frame structure in the fourth area conditions were considered. The primary purpose of this study is to calculate the response reduction coefficient values obtained from the RC frame design. The results were interpreted using nonlinear analysis. ETABS software was used to analyze the nonlinear behavior of the samples. Therefore, this study attempted to evaluate the adequacy of the rule-based "R" factor in the seismic evaluation of structural design using nonlinear dynamic analysis (NLD). The results clearly show the effect of structural changes on ductility and strength values. It is distinctly seen that the 'R' value written by the code for a particular type of model indicates that importance should be given to the error and adequate prediction. In this we studied the different response reduction coefficients are used to define models with different processes to obtain the most economical and stable models. And examining the influence of behavior factor on changes in displacement and drift of structure.
Key Words: dynamic analysis1, extreme strength 2, impact ductility3, seismic response analysis 4.
1. INTRODUCTION While there are many natural disasters in the world, earthquakes are one of the worst and can have a significant impact on trade and business. Therefore, in recent years, earthquake engineering has been established as a branch of engineering related to earthquake prediction. years. Most seismic design rules for buildings consider and assume the nonlinear response of earthquake-exposed objects in terms of seismic intensity. Measure the seismic force required in the structure and then develop a design process to ensure the structure can withstand this force. Durability is a key factor in the seismic design of most structures. The reduced response factor provides an easy-to-understand view and plays a crucial role in seismic design. The negative response of the model is not included in the design process, but its impact is considered using a reduction called the reduction factor © 2024, IRJET
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Impact Factor value: 8.226
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uses the R factor to reduce the base shear force to obtain the external design. We know that actual seismic forces are greater than the models were designed for. The structure cannot be built according to the importance of the earthquake intensity because the construction costs will be too high. The actual intensity of the earthquake is reduced by a factor called R factor. The method for determining the reduction factor (R) varies from code to code. The value of the reduced response reduction factor in the IS code varies from 3 to 5. IS 1893 2016 (Part I) depends on the type of moment resisting frame (OMRF), specific moment resisting frame (SMRF) and moment resisting frame with actual mean resistance (IMRF). Most previous work in this field has focused on finding the ductility and super strength components in response to the reduction coefficient. Response reduction coefficient: Reaction reduction coefficient, R, represents the ratio of the maximum external force to the lateral force carried when the structure is elastic. Last build. In general, response reduction points are expressed as a function of various structural parameters such as strength, ductility, damping and redundancy.
Where "Rs" is the strength coefficient, "Rr" is the hardness coefficient and "Rμ" is the ductility coefficient. 1.1 Strength Factor (Rs): The strength factor is calculated as the ratio of the maximum base shear force (Vo) obtained from the pushover curve to the base shear force (Vb) of the structure.
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