This paper presents a numerical study on the vertical (axial) and lateral (flexure) behavior of CFST (Concrete-Filled Steel Tube) columns with active hoop prestress achieved by bolting together two steel half-tubes. Twelve prototype column specimens differing in prestressing force (three levels) gravity loading ratio (four are analyzed; they selected to represent typical ground mid-rise buildin...

Taking a concrete-filled steel tube (CFST) arch bridge with clear span of 400 m as an example, the in-depth analysis its natural vibration characteristics is carried out by establishing finite element model. Then, three-dimensional El Centro recorded wave after amplitude modulation taken excitation wave; structural response under three kinds single dimension and four multidimensional combined 0...