Worldwide, high rise construction is recent trend in the building development. Steel has many advantages which includes flexible framing system, assembling, less weight to height ratio, availability and it doesn’t harm environment. That’s reason steel been mostly used material buildings. Previously gravity load was considered as an important factor design. With demand of buildings now seismic f...

In this study, the co-operation of steel and concrete in composite columns is considered. Using numerical modeling to study the behavior of these sections, a new type of sections, namely Concrete Filled Double-Skin steel Tubular (CFDST) columns, is introduced. The parameters and techniques that influence the numerical simulation that bring this modeling closer to...

The analysis and design of structures sensitive to second order effects require the consideration initial imperfections. Scaffold structures, due their low stiffness, are very effects. accuracy these relies in part on estimation imperfections affecting structure. In 1960s, C.E.C.M., European Convention Steel Construction, carried out a series experimental tests determine degree each type cross-...

Abstract To improve the behavior of hollow concrete filled steel tube, a novel type reinforced circular tubular member (RHCFST) was put forward and its axial studied. The finite element analysis model 12 RHCFST short columns under compression established by using ABAQUS. influence tube’s strength wall thickness, diameter bar with normal strength, sandwich concrete’s thickness on mechanical prop...

Cast steel nodes are being increasingly popular in steel structure joint application as their advanced mechanical performances and flexible forms. This kind of joints improves the structural antifatigue capability observably and is expected to be widely used in the structures with fatigue loadings. Cast steel node joint consists of two parts: casting itself and the welds between the node and th...

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cast connections. ABSTRACT: Diagonal bracings are extremely popular elements for lateral load resistance in steel-framed buildings. In turn, the most common shape used for bracing members is the hollow structural section. While the design of such members is straight-forward, the design of gusset-plate connections at the member ends is controversial. This paper reviews the current ‘state-of-the-...

It has been clarified that deformation and annealing of martensite starting structure can produce ultrafine-grained structure in low carbon steel.  This study aims to investigate the texture evolution and mechanical properties of samples with martensite structure deformed by two different forging processes. The martensitic steel samples were forged by plane strain compression and multi-directio...