Experimental Study on Strength of Composite Structural Connection with Steel Studs Closely Arranged in SFRCC Slab

摘要

The paper presents the results obtained from a series of push-out tests of studs embedded in unreinforced SFRCC slab. A total of 5 push-out tests are conducted, with the number of studs, the gage length, and pitch length as the test parameters. When embedded in SFRCC, the studs arranged densely with a pitch length of 3.5 times the stud diameter can still possess the shear strength (per stud) not smaller than 90% of that of a single stud. The shear strength of a single stud is significantly larger than the strength stipulated by leading codes. Detailed finite element analyses are conducted to supplement the experimental data and it was found to be reasonable in estimating the maximum strength.