Concrete filled double skin circular tubular beams with large diameter-to-thickness ratio under shear

Numerical analysis on torsional behavior of rectangular and square CFDST members

“…The tapered CFDST members have potential applications in engineering, Deng et.al [35] carried out test studies and analyzed the mechanism of tapered CFDST members under axial compression. Uenaka et al [38] [39] experimentally investigated the shear behavior of circular CFDST beam members. It was noted that when increasing the hollow ratio, the shear capacity of CFDST beam members decreased.…”

CFDST stub columns having outer circular and inner square sections under compression

“…This is mainly due to the reduction of confined stress on the in-filled concrete between the double tubes. In addition, asymmetric four-point loading test on CC-CFDST deep beam with large diameter-tothickness ratio was performed by the author [22]. As the double circular tubes presented no ovalization during the loading tests [22], the results showed that shear strength of CC-CFDST could be predicted through the same method as that for RC deep beams.…”

Investigation on square concrete filled double-skin steel tube (CFDST) subjected to local bearing force: Experiments

“…Recently, some new studies were carried out on the experimental behaviour and nonlinear simulation of CFDST stub columns subjected to axial loading [5][6][7][8], CFDST beams [9], CFDST members subject to pure torsion [10], partially loaded CFDST columns [4], CFDST columns under long-term sustained loading [11] and CFDST columns under fire [12].…”