中文摘要：

完成了12个钢制套筒灌浆连接件的拉拔试验,系统研究了其破坏过程与破坏形态、荷载-位移曲线、套筒应变等,重点分析了锚固长度、钢筋直径对筒壁应力的影响。运用厚壁圆筒理论,明确套筒灌浆连接件中钢筋与灌浆料以及套筒之间的传力过程,并基于轴向拉力建立了筒壁纵、横向应力的计算模型。研究表明：套筒灌浆连接件破坏过程分为弹性、屈服、强化、颈缩四个阶段,屈服强度和极限强度与钢筋材性相近。随钢筋锚固长度增加,筒壁应力略有减小,且随着钢筋直径增加,筒壁的应力明显增大。同时,建议筒壁应力计算值与试验值吻合较好,可为钢筋套筒灌浆连接设计与研究提供借鉴。

英文摘要：

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.