Analysis and design for the resilience of shear connections

This paper proposes an approach for quantifying the demands on shear connections under the assumption of an ineffective column. Formulas and an algorithm are developed to evaluate the axial force, axial deformation, rotation, and moment demands on beam-to-column shear connections. The analysis algorithm developed is verified using a solved example found from literature. Parametric studies are conducted to determine important parameters in the connection modeling for resilience design. Furthermore, a detailed procedure indicating how to obtain the properties of an end-plate shear connection for its resilience design is provided. Four end-plate connection examples are employed to illustrate the proposed methodology. Finally, a capacity design concept is introduced for the ductility design of shear connections. This study demonstrates that shear connections should be designed explicitly for its resilience to resist progressive collapse of a girder-and-beam system.

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STEEL WEIGHT SAVING DEVELOPED FROM SEMI-CONTINUOUS CONSTRUCTION IN MULTI-STOREY BRACED STEEL FRAME BASED ON EURO-CODE 3

Jurnal Teknologi ◽

10.11113/jt.v77.6401 ◽

2015 ◽

Vol 77 (16) ◽

Author(s):

T. Y. Taher ◽

M. M. Tahir ◽

A. Sulaiman ◽

S. P. Ngian ◽

A. Saggaff

Keyword(s):

Parametric Study ◽

Steel Frames ◽

Steel Frame ◽

Simple Construction ◽

Weight Saving ◽

End Plate ◽

Rigid Connection ◽

Parametric Studies ◽

Steel Weight ◽

Plate Connection

Steel frames can be designed as simple, semi-continuous, and continuous construction. However, these types of constructions depend on the type of connections used. Connections are usually classified in design as pinned which is associated with simple construction or rigid which is associated with continuous construction. However, the actual behaviour in most cases is classified as semi-rigid connections or partial strength. The semi-rigid connections usually associated with the stiffness of the connection while the strength of this connection usually associated with partial strength. The use of semi-rigid connection has been encouraged by Euro-code 3 and studies on the matter known as semi-continuous construction have proven that substantial savings in steel weight of the overall construction. A series of parametric studies on two bays of two, four, six, and eight storey of multi-storey braced steel frame are presented in this paper. All frames are designed using S275 steel and flush end-plate connection was used as connection for semi-continuous construction whereas fin plate connection was used for simple construction. The frames are designed both as simple construction and semi-continuous construction and the steel weight of the frames was calculated and compared. From the parametric study it was found that by using partial strength connection the saving in steel weight of the frames is in the range of 11.5% to 22.5% of the total steel weight of the frames.

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Numerical studies on the structural behaviour of composite end-plate connections

Canadian Journal of Civil Engineering ◽

10.1139/l10-045 ◽

2010 ◽

Vol 37 (6) ◽

pp. 907-921 ◽

Cited By ~ 3

Author(s):

Aaron J. Wang

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Three Dimensional ◽

Element Model ◽

Structural Behaviour ◽

Analysis And Design ◽

Shear Connectors ◽

End Plate ◽

Plate Connections ◽

Plate Connection

A three-dimensional (3-D) finite element model is established to predict the structural behaviour of composite end-plate connections with full incorporation of material and geometrical nonlinearities. A two-dimensional (2-D) finite element model is also proposed as a tool for a comprehensive parametric study, analysis, and design. The accuracy of both the models is verified by comparing the numerical results with those from tests and a design model. Various important structural behaviours of composite end-plate connection are also studied through the numerical and analytical simulations. These models are regarded as effective tools for conducting performance-based design of composite connections and semi-continuous beams with reasonable consideration of nonlinear deformation characteristics of both tensile reinforcements and shear connectors.

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An experimental study of end plate shear connections

Canadian Journal of Civil Engineering ◽

10.1139/l91-099 ◽

1991 ◽

Vol 18 (5) ◽

pp. 818-829 ◽

Cited By ~ 2

Author(s):

Karl Van Dalen ◽

Mark Van Dalen

Keyword(s):

Load Transfer ◽

Shear Capacity ◽

Shear Behaviour ◽

Stress Distributions ◽

End Plate ◽

Shear Connections ◽

Scale Test ◽

Plate Connections ◽

Plate Connection ◽

Bolt Diameter

The shear behaviour of both conventional end plate connections and clipped end plate connections, in which the upper corner of the end plate was removed, was examined in a laboratory investigation of 29 full-scale test specimens. The study included connections of varying geometry, bolt diameter, and end plate depth. The majority of the connections failed in one of two modes: a failure of the bolt group component or a web-tear failure. For connections failing through the bolt group, the ratio of the shear capacity of the clipped connection to that of the conventional connection is the ratio of the number of bolts in the clipped and conventional connections. Even when failure is not through the bolt group, the shear capacity of an end plate connection is reduced when the upper corner of the end plate is clipped. The experimentally determined shear capacities are compared with the calculated resistances determined using the resistance equations in CAN3-S16.1 in conjunction with the assumptions of load transfer mechanisms and stress distributions embodied in the design aid for end plate connections in the Handbook of Steel Construction. Key words: beams, connections, bolts, end plates, shear strength.

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Structural Behaviour of Blind Bolted Connection to Concrete-Filled Steel Tubular Columns

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.591 ◽

2010 ◽

Vol 163-167 ◽

pp. 591-595

Author(s):

Jing Feng Wang ◽

Xin Yi Chen ◽

Lin Hai Han

Keyword(s):

Analysis Model ◽

Bolted Connections ◽

Structural Behaviour ◽

Tubular Columns ◽

End Plate ◽

Moment Resisting ◽

Strength And Stiffness ◽

Plate Connections ◽

The Moment ◽

Plate Connection

This paper studies structural behaviour of the blind bolted connections to concrete-filled steel tubular columns by a serial of experimental programs, which conducted involving eight sub-assemblages of cruciform beam-to-column joints subjected to monotonic loading and cyclic loading. The moment-rotation hysteretic relationships and failure models of the end plate connections have been measured and analyzed. A simplified analysis model for the blind bolted connections is proposed based on the component method. It is concluded that the blind bolted end plate connection has reasonable strength and stiffness, whilst the rotation capacity of the connection satisfies the ductility requirements for earthquake-resistance in most aseismic regions. This typed joint has excellent seismic performance, so it can be used in the moment-resisting composite frame.

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