为研究配置不同栓钉参数的钢筋混凝土双向板受力性能，完成了7块配置栓钉的双向板柱节点冲切试验，主要参数为栓钉间距、直径、高度、强度和布置形式等，采用静力加载方式来模拟配置栓钉的板柱节点破坏全过程。通过对比分析试验结果，表明增大栓钉直径、栓径高度或提高栓钉强度均能改善试件抗冲切性能，其中增大直径效果最为明显，变形提高幅度达到36%；加大栓钉间距和减小栓钉高度对改善试件抗冲切性能不利，承载能力和变形均有不同程度降低；对比三种不同栓钉布置形式发现，采用相同数量栓钉放射布置和增加每圈栓钉数量的正交布置，均有利于提高试件抗冲切能力，但前者更为经济。进而结合相关规范计算结果和试验结果进行对比，验证试验结果的可靠性，结果表明配栓钉板柱结构规范计算结果具有足够安全储备，但对于反映试验结果的实质不够充分，特别是栓钉对板的抗冲切性能的贡献有所低估。

The main objectives in this paper are to study mechanical performances of reinforced concrete two-way slab with different stud parameters.The experimental study on 7 reinforced concrete two-way slab-column connections with punching shear studs were completed.The main parameters were spacing of stud, the diameter of the stud, the height of the stud, the strength of the stud and the arrangement of the stud.The entire process of damage of slab-column connections with studs was simulated by using static loading method. By comparing and analyzing the test results of specimens with studs,the results show that increasing the diameter of the stud,the height of the stud or the strength of the stud can improve the anti-punching shear performance of the specimen.The increase in diameter is the most obvious, and the increase in deformation is 36%.Increasing stud spacing and reducing stud height are both not good for the improvement of the test, and the load-bearing capacity and the deformation are reduced.By comparing three different stud arrangements it is found that using radiation arrangement with the same number of studs and orthogonal arrangement with increasing the number of studs are both conducive to the improvement of the specimen anti-punching shear capacity,and the former was more economical.And then the reliability of the test results was verified by comparing the calculated results of relevant specifications with the test results.The results show that the safety reserve of specification calculation results of slab-column structure with studs is enough. However,it is not enough to reflect the nature of test results,especially contributions of the stud to anti-punching shear performance of slabs are underestimated.

国家自然科学基金项目(51178175,51338004)