To investigate the axial compressive behavior of an opening cold-formed thin-wall C-steel combined double-limb column, I-section columns were modeled in this paper, and models validated by experiments on axial-compressed columns. Parametric analyses carried out The effects slenderness ratio, height to thickness width bolt spacing, web ultimate bearing capacity investigated. It was observed that...

The use of composite materials is an effective technique to enhance the capacity of reinforced concrete columns subjected to the seismic loading due to their high tensile strength. In this paper, numerical models are developed in order to predict the experimental behavior of square reinforced concrete columns strengthened by glass fiber reinforced polymer and steel bars and unstrengthened colum...

The objective of the project was rehabilitation and expansion one bridge, located on DN28 (a national road) in Sarca, Iasi County. solution includes an atypical use flexible galvanized steel structure. main challenge this case to finish works without any traffic interruption section road, as well assembly said corrugated structure under existing bridge. work executed record time with reduced co...

High strength steel is widely used in engineering, especially light structures. However, due to the material properties of high steel, its seismic performance has attracted wide attention. To study hysteretic behavior H-shaped members thin-walled sections Q690 a finite element model was built up by using general analysis software ABAQUS. Based on model, an extensive parametric carried out. The ...

Analytical strengths of reinforced concrete beams and columns based on reinforcing steel stress-strain curves with and without a sharp yield plateau and the nonlinear stress-strain behavior of concrete are compared with strengths calculated in accordance with the ACI Building Code to determine the feasibility of using the 0.2% offset method to define the yield strength of reinforcing steel. Com...

During a fire event, the stability of steel structures may be compromised, and structural collapse occur due to loss their mechanical resistance as temperature increases. One solutions reduce this problem is protection with coating using enhanced fire-resistant mortars. This paper reports detailed experimental work aiming develop gypsum cement-based mortars for passive evaluate composition’s ef...

This report presents the results of an experimental study that was conducted to investigate the effects of key parameters on the compressive behavior of fiber reinforced polymer (FRP)concrete-steel double-skin tubular columns (FSDT). Hybrid FSDT columns have been introduced as a new form of hybrid columns. They consist of an outer tube made of FRP and inner tube made of steel, with sandwiched c...

The Continuous Strength Method (CSM) is a deformation based design approach that provides accurate cross-section resistance predictions by making rational allowance for the interaction between elements, partial spread of plasticity and beneficial effects strain hardening. CSM can be used in conjunction with advanced analysis members frames, but, hand calculations, member-level stability checks ...

An attempt has been made to use this composite structural member as a column with a modification of flutes on the steel tube which enhances the aesthetics and development area of sheet by which the moment of inertia gets increased by about 17 to 40 % for rectangular flutes and 9 to 23 % for triangular flutes. Confining concrete by providing triangular and rectangular shape fluted steel tube has...