STUDY ON THE INFLUENCE OF THE CONFINEMENT EFFECT ON THE BOND STRENGTH RECOVERY IN THE DEFECTIVE GROUTED SLEEVE CONNECTION

Authors

  • Espoir Kahama Civil Engineering
  • Xie Fuzhe Jiangsu University, Faculty of Civil Engineering and Mechanics, Department of Civil Engineering, Zhenjiang, 301 Xuefu road, China
  • Ali Abdulkadir Aden Jiangsu University, Faculty of Civil Engineering and Mechanics, Department of Civil Engineering, Zhenjiang, 301 Xuefu road, China
  • Faisal Iliasu Illo Jiangsu University, Faculty of Civil Engineering and Mechanics, Department of Civil Engineering, Zhenjiang, 301 Xuefu road, China

DOI:

https://doi.org/10.14311/CEJ.2022.02.0025

Keywords:

Bond strength, Grouting defect, Confinement effect, Interfacial modeling, Grouted sleeve connection

Abstract

Defects emanating from the onsite operation of the grouted sleeve connector have a significant impact on the ultimate tensile capacity of the connector. In this research, an experiment on the capacity of the fully grouted sleeve connector considering different configurations of defects was carried out. The experiment results indicated that the connector is highly sensitive to the location of the defects, which engenders a drop of 15% in the ultimate capacity of the connector. Based on the accurate simulation of the experiment model, a series of parametric analyses were conducted to evaluate the interaction of defects with other mechanical properties of the connector. It was found that the different values of the ratio of the sleeve diameter to that of the bar within the design recommended interval significantly influence the connection's performance. The lowest ratio value engenders approximately 10% to 16% of tensile strength recovery in the weakened configuration, while a bigger ratio value engenders a decline in the capacity. This work proposes the incorporation of a safety constant in the average bond expression.

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Published

2022-07-31

How to Cite

Kahama, E., Fuzhe, X., Aden, A. A. ., & Illo, F. I. . (2022). STUDY ON THE INFLUENCE OF THE CONFINEMENT EFFECT ON THE BOND STRENGTH RECOVERY IN THE DEFECTIVE GROUTED SLEEVE CONNECTION. Stavební Obzor - Civil Engineering Journal, 31(2), 332–348. https://doi.org/10.14311/CEJ.2022.02.0025

Issue

Vol. 31 No. 2 (2022)

Section

Articles

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