EXPERIMENTAL STUDY AND STRESS ANALYSIS OF MECHANICAL PERFORMANCE OF GROUTED SLEEVE SPLICE

The paper presents the test results of twelve grouted sleeve splices under direct tensile load. Their performance was evaluated based on the failure process, failure mode, load and displacement curves. The cylinder wall stress impacted by anchorage length and bar diameter was analyzed. The transfer processes among the grouted sleeve splice were revealed by the thick-walled cylinder theory, and then the relationship between the cylinder wall stress and the axial force was established using a calculation model. The result shows that the failure process consists of four stages:elastic stage, yield stage, strengthening stage and neck stage. The behaviors of yield strength and ultimate strength measured in the specimens are similar to those of the steel bar. The cylinder wall stress decreases slightly as the anchorage length increases, and it increases obviously as the bar diameter increases. The analytical values agree well with the experimental values, which could provide references for relevant design and research.