Moment Capacity Ratio at Column – Beam Joint in a RC Framed Structure
Beam-column joint is the gap in the modern ductile design of building. Especially under the earthquake loading this is more susceptible to damage. Due to brittle nature of failure this type of failure cannot be afford. Since 1970’s this areas is under the light of research, but with the paper of Park and Paul, It got momentum. But still due to versatile nature of the joints core behaviour, the problem is still persisting. Though many international codes recommend the moment capacity ratio at beam column joint to be more than one, There are discrepancies among the major international codes with regard to MCR. Indian standard codes for design of RC framed buildings are silent on this aspect. Draft 13920 (2014) code suggests a value of MCR similar to other international codes without proper theoretical basis. Hence a rational study is required on the values of MCR. A computationally attractive procedure for calculating flexural capacity of column developed for determining MCR at a beam-column joint. To reach at an appropriate and acceptable MCR for capacity design of RC framed building reliability based approach is done. This research deals with the fragility and reliability analysis of five, seven and ten storey RC frames designed using various values of MCR ranging from 1.0 to 3.2. The RC frames are designed as per IS 1893 (2002) for all seismic zones. Hazard curves required of various seismic location in India (like zone II, III, IV and V) has been selected from National Disaster Management Authority, Government of India. Seismic risk assessment of all the designed buildings is conducted and based on the achieved Reliability Index and the Target Reliability Index minimum value of Moment Capacity Ratio (MCR) is suggested.
 NZS 3101: Part 1:1995 “Concrete Structures Standard, Part 1: The Design of Concrete Structures”, New Zealand Standard, New Zealand, 1995.
 PrEN 1998-1-3:2003 “Design provisions for Earthquake Resistant Structures-Part 1: General Rules, Seismic Actions and Rules for Building”,. Brussels, 2003
 Paulay, T., Park, R., and Priestley, M. J. N., “Reinforced Concrete Beam-Column Joints Under Seismic Actions.” ACI Journal, 1978, pp 585-593.
 NZS 3101: Part 2:1995 “Concrete Structures Standard, Part 2: Commentary on the Design of Concrete Structures”, New Zealand Standard, New Zealand, 1995.
 Uma, S. R., “Seismic Behaviour of Beam Column Joints in Moment Resisting Reinforced Concrete Frame Structures,” submitted to Indian Concrete Journal, October 2004
 FEMA-273. “NEHRP guidelines for the seismic rehabilitation of buildings.” Federal Emergency Management Agency, Washington DC, 1997.
 ATC-40. “Seismic evaluation and retrofit of concrete buildings.” Volume 1 and 2. Applied Technology Council, Redwood City California, 1996.
 Rana Rahul, Jin Limin and Zekioglu Atila (2004) “pushover analysis of a 19 story concrete shear wall building” submitted to 13th world conference on Earthquake Engineering(2004).
 Zhang, L., and Jirsa, J.O., “A Study of Shear Behaviour of RC Beam-Column Joints,” PMFSEL Report No. 82-1, University of Texas at Austin, Feb. 1982.
How to Cite
Copyright (c) 2020 Jawala Kumar, Mr. Varun Kumar Sikka
This work is licensed under a Creative Commons Attribution 4.0 International License.
IJOSCIENCE follows an Open Journal Access policy. Authors retain the copyright of the original work and grant the rights of publication to the publisher with the work simultaneously licensed under a Creative Commons CC BY License that allows others to distribute, remix, adapt, and build upon your work, even commercially, as long as they credit you for the original creation. Authors are permitted to post their work in institutional repositories, social media or other platforms.
Under the following terms:
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.