Behaviour and design of concrete-filled mild-steel spiral welded tube long columns under eccentric axial compression loading

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).…”

“…A total of 16 specimens have been collected for CFSTs with SWTs under axial compression and uniaxial bending due to eccentric loading (see Table 9). The experimental data were collected from the following two publications: Gunawardena et al [41] and Gunawardena and Aslani [42]. The uniaxial bending occurs due to the loads applied with the eccentricity of either at 0.15D or 0.40D.…”