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采用位移控制的加载方法对7个设置栓钉的型钢混凝土组合构件和1个未设置栓钉的对比试件进行推出试验。以栓钉直径、栓钉设置位置以及混凝土强度等为变化参数,研究型钢混凝土组合构件的破坏形态、黏结性能和极限受剪承载力。试验结果表明:栓钉受剪承载力随栓钉直径的增大、混凝土强度的提高而提高;腹板设置栓钉的试件抗剪性能优于翼缘的;翼缘和腹板均设置栓钉的试件承载性能最好,且能有效地限制滑移向自由端发展。分别对国内外不同技术标准建议的栓钉受剪承载力计算式进行分析比较,指出不同设计方法的合理应用范围。最后,在分析试验结果基础上提出型钢非埋入式栓钉受剪承载力的计算方法。
The displacement control loading method was used to test the seven steel-concrete composite structures with pegs and one comparative specimen without pegs. Studied the failure mode, the bonding performance and the ultimate shear capacity of the SRC members with the stud diameter, the location of the studs and the strength of the concrete as the changing parameters. The test results show that the shear strength of the studs increases with the increase of the stud diameter and the concrete strength; the shear resistance of the studs with webs is better than that of the flanges; Specimens bearing the nail carrying the best performance, and can effectively limit the development of free glide to the development. The calculation formulas of the shear bearing capacity of studs proposed by different technical standards at home and abroad are respectively analyzed and compared, and the reasonable application range of different design methods is pointed out. Finally, based on the analysis of test results, the calculation method for the shear capacity of non-embedded studs of steel sections is proposed.