Concentric Loading Tests of Concrete Filled Spiral Steel Tubes and Stress-Strain Relation of Concrete Confined by Steel Tubes

Design resistance of helical seam pipe columns with limited tensile test data

“…The input parameters and load bearing capacities are provided in Table 6, where fcm is the mean measured concrete compressive strength. The experimental data were collected from the following six publications: Wang et al [40], Aslani et al [38], Akiyama et al [35], Gardner [37], Gunawardena et al [41], and Gunawardena and Aslani [42]. However, in the tests by Aslani et al together with Gunawardena and Aslani, the SWTs were manufactured with only a single-sided MIG welding on the outside of the pipe (as opposed to the requirement given in API 5L that the welding should be both on the inside and outside of the pipe).…”

“…Recommended number of steel yield strength tests for CFST with spirally welded tubes under eccentric loading (based on fym/fyn =1 35). …”