Evaluation of Response Reduction Factor for Steel Building Using Various Types of Bracings

The IUP Journal of Structural Engineering, Vol. IX, No. 4, October 2016, pp. 7-21

Posted: 16 Nov 2017

See all articles by Ajinkya S. Akolkar

Ajinkya S. Akolkar

University of Mumbai - Veermata Jijabai Technological Institute (VJTI)

Keshav K. Sangle

University of Mumbai - Veermata Jijabai Technological Institute (VJTI)

Date Written: October 14, 2016

Abstract

The paper aims at evaluating the value of Response Reduction Factor (RRF) for 3D model of steel buildings. Nonlinear static pushover analysis was carried out to assess the structural performance of different bracing systems in steel buildings of 4, 6 and 8 storeys. Five structural configurations were used, namely, Moment Resisting Frames (MRFs), Diagonal Braced Frames (DBFs), X Braced Frames (XBFs), V Braced Frames (VBFs) and Chevron Braced Frames (CBFs). The effect of the parameters, such as the height of building and the type of bracing system, was investigated on the value of RRF. The results show that RRF decreases as the height of the building increases and also this factor is on a higher side for braced frames than unbraced frames. The paper also shows that the values of RRF prescribed by IS code are on a very safer side than the actual values obtained, thereby giving rise to uneconomical design of structures.

Keywords: Bracings, Nonlinear Static Pushover Analysis, Pushover Curves, Response Reduction Factor (RRF)

Suggested Citation

Akolkar, Ajinkya S. and Sangle, Keshav K., Evaluation of Response Reduction Factor for Steel Building Using Various Types of Bracings (October 14, 2016). The IUP Journal of Structural Engineering, Vol. IX, No. 4, October 2016, pp. 7-21, Available at SSRN: https://ssrn.com/abstract=3070748

Ajinkya S. Akolkar (Contact Author)

University of Mumbai - Veermata Jijabai Technological Institute (VJTI) ( email )

Matunga, Mumbai, Maharashtra
India

Keshav K. Sangle

University of Mumbai - Veermata Jijabai Technological Institute (VJTI) ( email )

Matunga, Mumbai, Maharashtra
India

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