Volume 2018, Issue 1 9127167
Research Article
Open Access

Experimental Study on Strain Penetration Effects in Fixed-End Rotation of RC Beam-Column Connections with High-Strength Reinforcement

Ling Li

Ling Li

School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China hit.edu.cn

Search for more papers by this author
Wenzhong Zheng

Corresponding Author

Wenzhong Zheng

School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China hit.edu.cn

Key Lab of Structures Dynamic Behaviour and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China hit.edu.cn

Key Lab Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China hit.edu.cn

Search for more papers by this author
Ying Wang

Ying Wang

School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China hit.edu.cn

Key Lab of Structures Dynamic Behaviour and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China hit.edu.cn

Key Lab Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China hit.edu.cn

Search for more papers by this author
Junke Ma

Junke Ma

School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China hit.edu.cn

Search for more papers by this author
First published: 13 December 2018
Citations: 1
Academic Editor: Giovanni Berselli

Abstract

The additional fixed-end rotation resulting from the strain penetration of longitudinal reinforcement in a reinforced concrete beam-column connection is a crucial factor for the plastic hinge rotation capacity. When it comes to high-strength reinforcement, the effects of strain penetration on fixed-end rotation become more obvious because of the increase in yield strength. In this study, 42 beam-column connections with high-strength hot rolled ribbed bars were designed and tested under monotonic loading at the beam end. The test results show that the rebar strains gradually decrease from the critical section towards the beam-column connection, thereby proving the existence of strain penetration in the beam-column connection. The slippage of the embedment reinforcement at the beam-column interface and additional fixed-end rotations were obtained from the test results. In addition, a parametric study involving the yield strength and diameter of reinforcement, concrete tensile strength, and embedment length in the beam-column connection was performed to investigate the effects of various parameters on the additional fixed-end rotation. Finally, a new simple and practical calculation model for predicting the additional fixed-end rotation was proposed. The prediction shows good agreement with the experimental results.

Data Availability

The data used to support the findings of this study are available from the corresponding author upon request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.