Experimental investigation on torsional behavior of composite beams reinforced with two-piece enclosed stirrups

Authors

  • Zhi Zhang Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
  • Qing Wang Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
  • Feng Lin Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China

DOI:

https://doi.org/10.29173/mocs59

Keywords:

RC beam, Composite beam, Two-piece enclosed stirrup, Maximum torque, Experimental study

Abstract

This paper presents an investigation of the torsional behavior of reinforced concrete (RC) beams which were cast twice and reinforced with two-piece enclosed stirrups. Their torsional behavior was compared with those of monolithically cast RC beams with conventional stirrups using a customized test setup. The test program was divided into two groups to distinguish different influencing factors. Results from the first test group indicated that the maximum torques of monolithically cast beams reinforced with two-piece enclosed stirrups decreased by an average of 3.7% compared to those reinforced with conventional stirrups. The second test group revealed that the maximum torques of composite beams increased by 6.7% compared to those of monolithically cast beams. As a whole, minor differences in the maximum torques and deformation capacities were found between composite beams reinforced with two-piece enclosed stirrups and monolithically cast beams reinforced with conventional stirrups.
2017 Modular and Offsite Construction Summit Proceedings

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Published

2017-11-10

Issue

2017 MOC Summit: Shanghai, China

Section

Proceedings

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