LAUSR

High-strength blind-bolted T-stub with endplate tapping is a new joint that is applicable to the prefabricated joint of steel columns with closed sections and steel beams. The failure mode and force performance of this joint are affected by many factors. In order to disclose the relations of this joint with various parameters, a calculation formula for the bearing capacity of high-strength blind-bolted T-stub with endplate tapping was proposed. The influences of bolt diameter and plate thickness on mechanical performance, failure mode, and bearing capacity were investigated through a unidirectional tensile performance test on 10 T-stub specimens. A nonlinear finite element simulation of specimens was performed, and its results were compared with those of the experiments. Experimental results show that the bearing capacity of the Tstub specimens is positively related with bolt diameter and plate thickness. Compared with an ordinary high-strength bolt, a new shear failure of tapping thread is added. Finite element analysis confirms that the numerical model is reliable and can provide references for parametric analysis. The ratio of calculated results of the proposed formula to the experimental results ranges from 65.1% to 94.7%, indicating that the calculated results are relatively safe. This study can offer references for the engineering applications of high-strength blind bolts with endplate tapping.