INFLUENCE OF SPLICES ON THE STABILITY BEHAVIOUR OF COLUMNS AND FRAMES

Abstract. The paper presents a study on the influence of splice connections on the stability behaviour of compressed steel columns. The column is modelled as two independent prismatic parts connected by a rotational spring at the splice location and rotational and extensional springs at the column ends to represent the effect of the adjacent structure. The general behaviour is characterized using a polynomial Rayleigh-Ritz approximation substituted into the potential energy function, in combination with the Lagrange's method of undetermined multipliers, and based on this model the critical load is found. The load-carrying capacity is analysed with respect to the following variables: (i) location and rotational stiffness of the splice, (ii) change in the column section serial size and (iii) column end-restraints stiffness coefficients. A nonlinear regression model is developed to predict simple relationships between the critical load and the relevant column characteristics

INFLUENCE OF SPLICES ON THE STABILITY BEHAVIOUR OF COLUMNS AND FRAMES

Abstract. The paper presents a study on the influence of splice connections on the stability behaviour of compressed steel columns. The column is modelled as two independent prismatic parts connected by a rotational spring at the splice location and rotational and extensional springs at the column ends to represent the effect of the adjacent structure. The general behaviour is characterized using a polynomial Rayleigh-Ritz approximation substituted into the potential energy function, in combination with the Lagrange's method of undetermined multipliers, and based on this model the critical load is found. The load-carrying capacity is analysed with respect to the following variables: (i) location and rotational stiffness of the splice, (ii) change in the column section serial size and (iii) column end-restraints stiffness coefficients. A nonlinear regression model is developed to predict simple relationships between the critical load and the relevant column characteristics

FE MODELLING OF SLENDER CONCRETE-FILLED STAINLESS STEEL TUBULAR COLUMNS UNDER AXIAL COMPRESSION

Abstract. This paper is concerned with the finite element (FE) modelling of slender concrete-filled stainless steel tubular columns (CFSST) under axial compression. This modelling is performed using ABAQUS, a commercially available FE program. Generally good agreement is achieved between the test and predicted results in terms of load-deformation curves and ultimate strength. This demonstrates that the FE modelling presented in this paper can be used with confidence to carry out extensive parametric studies into the behaviour of slender CFSST columns

SDSS'Rio 2010 STABILITY AND DUCTILITY OF STEEL STRUCTURES REAL SCALE EXPERIMENTAL ANALYSES OF CIRCULAR HOLLOW SECTION MULTI-PLANAR STEEL TRUSSES

Abstract. The main objective of this work is to develop innovative models of tubular connections in orde

A PARAMETRIC ANALISYS OF COMPOSITE BEAMS WITH T- PERFOBOND SHEAR CONNECTORS

Abstract. This paper presents the design and push-out test results of T-Perfobond connectors. The shear connectors were made with two different geometries by varying the connector flange thickness. The TPerfobond connectors presented two web holes and were immersed into 120mm thick concrete slabs. Reinforcing steel bars were used inside the web holes to increase its structural performance. A numerical study was also made to aid the shear connector design aiming to increase its associated deformation capacity. The results indicate that the developed T-Perfobond connector possessed an appropriate structural behaviour and was also able to achieve the Eurocode 4 [1] ductility requirements

A PARAMETRIC ANALISYS OF COMPOSITE BEAMS WITH T- PERFOBOND SHEAR CONNECTORS

Abstract. This paper presents the design and push-out test results of T-Perfobond connectors. The shear connectors were made with two different geometries by varying the connector flange thickness. The TPerfobond connectors presented two web holes and were immersed into 120mm thick concrete slabs. Reinforcing steel bars were used inside the web holes to increase its structural performance. A numerical study was also made to aid the shear connector design aiming to increase its associated deformation capacity. The results indicate that the developed T-Perfobond connector possessed an appropriate structural behaviour and was also able to achieve the Eurocode 4 [1] ductility requirements