Mechanical behaviour of grouted sleeve splice under uniaxial tensile loading

Abstract

This paper presents an experimental and analytical study on mechanical behaviour of two kinds of new low-cost grouted sleeves processed by seamless steel pipe, i.e., grouted sleeve with wedge and grouted sleeve with wedge and thread, under uniaxial tension. In total, twenty-two rebar splice specimens with various embedded lengths, spliced bar diameters and wedge lengths are prepared and tested. The test results indicate that the performance of both grouted splices meets the requirements of ACI318 and JGJ107. The required embedded length of rebar in the splice is found to be around 6-6.4 times the spliced bar diameter due to confinement effect. The tensile capacity of the splice increases with increasing diameter of the anchorage segment of the spliced bar, and length and slope of the wedge at both ends of the sleeve. Because of the good performance of wedges threads do not significantly improve the tensile capacity of the sleeve but improve the bond strength and bearing capacity in non-wedge segment of the sleeve. The tensile capacity of the specimen is slightly lower than that of steel bar and the reduction coefficient of bearing capacity is estimated. An analytical model is proposed to predict the tensile capacity of grouted sleeves considering the effects of confinement and reduction of tensile capacity of the splices, the predictions of which are in good agreement with experimental data.

Experimental study on a precast beam-column joint with double grouted splice sleeves

“…Since all types of grouted sleeve are not available in the market for the long grouted sleeves and the commercial sleeves are expensive due to the use of high-strength materials and the complex manufacturing processes, two low-cost grouted sleeves, i.e. grouted sleeve with wedge (GSW) and grouted sleeve with wedge and thread (GSWT) previously developed by the authors [51] were used in this study (see Fig. 3).…”

Review of annual progress of bridge engineering in 2019

“…An analytical model was proposed to assess the bond-slip behavior of the grouted sleeve connection with a long embedment length. Lu et al (2019b) measured the mechanical properties of the wedge-shaped and wedge-shaped thread grouted sleeves under uniaxial tension, studied the influence of the embedding length of the steel bar, the slope of the wedge and the thread of the sleeve. Kuang et al (2019) proposed that the content of the grouted material in the sleeve affected the failure modes of the connection (pull-out failure or broken failure) and the bearing capacity.…”

Predicting Behavior of Grouted Dowel Connections Using Interfacial Cohesive Elements

“…The corrugated duct, which in the presence of a concrete matrix facilitates longitudinal stress transfer, exerts a uniform compressive field unto the grout, restraining it from splitting failures. Previous experimental observations [2][3][4][5][6][7][8][9] highlighted this composite nature and indicated clear deviation from the assumed code treatment.…”