The use of Perfobond Leisten (PBL) shear connectors in building structures has attracted increasing interest. A new approach for using perforated steel plates concrete-filled tube (CFST) column splices was implemented this study. shape the perforation opening is generally a circle, similar to that PBL connectors. However, study, an oval-shaped used increase double area concrete. pull-out experi...

Concrete-Filled Steel Tube (CFST) columns need to be reliably analyzed and estimated under axial compression. This research contributes solving the above problem by using an integrated Ansys Workbench application, DesignXplorer. approach is convenient for academics industry in CFST column design because proposed compressive strength formulas will established parameters’ properties. Correlation ...

Abstract The addition of nano-silica to ultra-high-performance concrete (UHPC) increase its toughness has been proposed obtain nano-concrete (UHPNC). This work mainly studies the reinforcement effect UHPNC on filled steel tube (CFST) columns under long-term load. Ten CFST strengthened with were selected and reinforced UHPNC. influences different thicknesses layer contents axial compression prop...

Concrete-filled steel tubular Y-shaped (CFST-Y) piers are good candidates for meeting the structural and aesthetic requirements of bridges. By using theoretical nonlinear static (pushover) analyses, seismic performances three types CFST-Y were evaluated at different hazard levels. The formulas first proposed to estimate lateral stiffnesses with pier–deck connections. Then, ductility development...

Gap between the steel tube and core concrete of Concrete-Filled Steel Tube (CFST) members is regarded as an initial imperfection, which may exist in CFST arch bridge due to construction process problems. In this paper, based on design scheme bolt-welded joints rib columns extra-long span bridge, effects two types imperfections, interfacial gap spherical-cap gap, mechanical properties Bolt-Welde...

There are a number of scenarios in which structural members experience torsion, including under the direct application torsional loading, when transverse loading is applied at an eccentricity to shear centre and as second order effect arising from lateral instability. To date, rigidity concrete-filled steel tubular (CFST) sections has yet be fully explored; hence study into uniform square CFST ...

In this paper, the results of experimental tests conducted on concrete-filled steel tubular (CFST) columns are presented. There is currently a deficit data available that can be used to evaluate current guidance documents and provide assessment improve their accuracy when considering behaviour CFST filled with high strength concrete. Thus, paper aims increase volume series groups stub subject a...