Abstract Under axial compression, the present article analyses and compares behaviour of Plain Concrete filled Nano Silica modified concrete with light gauge steel rectangular columns. In 18 work samples, plain nano silica-modified was tested on sections. Investigations were conducted into several essential variables, including geometry cross-section, tubular thickness steel, depth-to-thickness...

This paper presents the results of an experimental study into the behavior of concrete-filled steel tube columns confined by fiber-reinforced polymer (FRP). Eleven columns were tested to investigate the effects of the FRP layer number, the thickness of the steel tube and concrete strength on their load capacity and axial deformation capacity. The experimental results indicated that the FRP wrap...

Abstract: This paper introduces a new numerical method for the analysis of infilled steel frames with hollow clay blocks. This approach is based on the brittle cracking model of ABAQUS. The results of the in-plane calibration analyses obtained with four experimental tests are presented and discussed. The first test was a bare steel frame used as a control specimen. The second was similar to ...

In this paper, we propose a cost-effective optimal-topology retrofitting technique for hollow-steel-section columns to sufficiently support industrial running cranes. A so-called bi-directional evolutionary structural optimization (BESO) method was encoded within the MATLAB modeling framework, with direct interface an ANSYS commercial finite-element analysis program, determine optimal topology ...

Hollow-walled lattices are novel cellular materials with lower densities than conventional dense-walled lattices. However, their manufacturability by laser powder bed fusion (LPBF) is not yet established. This study investigates the LPBF of Ti-6Al-4V hollow-walled struts respect to strut outer diameter, wall thickness (controlled scan path), and inclination angle, while length purposely limited...

The molded polystyrene wallboard with steel skeleton is composed of cold-formed thin-walled skeleton, flame-retardant particles a special adhesive. lattice columns battens were tested under axial compression and eccentric compression. results show that it reasonable to calculate the ultimate vertical bearing capacity specimen by comparing experimental theoretical calculation results. It found t...

The behaviors of bar-reinforced concrete filled steel tubular columns subjected to axial load were studied. One plain concrete filled steel tubular column and three bar-reinforced concrete filled steel tubular columns were tested. The deformation of specimens and the strain of steel tubes were measured. Based on experimental researches, a simple numerical analysis method was presented to simula...