Behavior of RC Beam–Column Joints Strengthened with Modified Reinforcement Techniques

Aditya Kumar Tiwary, Sandeep Singh, Jasgurpreet Singh Chohan, Raman Kumar, Shubham Sharma, Somnath Chattopadhyaya, Farid Abed and Mislav Stepinac
Additional contact information
Aditya Kumar Tiwary: Civil Engineering Department, Chandigarh University, Mohali 140413, Punjab, India
Sandeep Singh: Civil Engineering Department, Chandigarh University, Mohali 140413, Punjab, India
Jasgurpreet Singh Chohan: Mechanical Engineering Department, Chandigarh University, Mohali 140413, Punjab, India
Raman Kumar: Mechanical Engineering Department, Chandigarh University, Mohali 140413, Punjab, India
Shubham Sharma: Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus-Kapurthala, Kapurthala 144603, Punjab, India
Somnath Chattopadhyaya: Department of Mechanical Engineering, Indian Institute of Technology (ISM), Dhanbad 826004, Jharkhand, India
Farid Abed: Department of Civil Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
Mislav Stepinac: Faculty of Civil Engineering, University of Zagreb, 10000 Zagreb, Croatia

Sustainability, 2022, vol. 14, issue 3, 1-19

Abstract: Using a significant number of transverse hoops in the joint’s core is one recognized way for achieving the requirements of strength, stiffness, and ductility under dynamic loading in a column joint. The shear capacity of a joint is influenced by the concrete’s compressive strength, the anchoring of longitudinal beam reinforcement, the number of stirrups in the joint, and the junction’s aspect ratio. Seismic motion on the beam may produce shear capacity and bond breaking in the joint, causing the joint to fracture. Furthermore, due to inadequate joint design and details, the entire structure is jeopardized. In this study, the specimens were divided into two groups for corner and interior beam–column joints based on the joint reinforcement detailing. The controlled specimen has joint detailing as per IS 456:2000, and the strengthened specimen has additional diagonal cross bars (modified reinforcement technique) at the joints detailed as per IS 456:200. The displacement time history curve, load-displacement response curves, load-displacement hysteretic curve, and load cycle vs. shear stress were used to compare the results of the controlled and strengthened specimens. The findings show that adding diagonal cross bars (modified reinforcing techniques) to beam–column joints exposed to cyclic loads enhances their performance. The inclusion of a diagonal cross bar increased the stiffness of the joint by giving an additional mechanism for shear transfer and ductility, as well as greater strength with minimum cracks.

Keywords: beam–column joints; shear capacity; cyclic loading; joint’s numerical modeling; interior joint; corner joint; modified reinforcement technique (MRT) (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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