Experimental and theoretical analysis of the moment–rotation behaviour of stiffened extended end-plate connections

The rotational behaviour of clipped end plate connections was studied by subjecting nine clipped and three conventional or “unclipped” specimens with varying connection geometry to combined shear and moment and obtaining the corresponding moment–rotation characteristics. It was found that the clipped end plate connections in this investigation had more than adequate rotation capacity to permit an interior beam connected to a supporting member by this type of connection to achieve its full plastic moment, provided the length-to-depth ratio of the beam does not exceed 20. For the range of rotations that would be experienced by clipped end plate connections in a practical structure, a model originally developed to predict the moment–rotation behaviour of conventional shear end plate connections was modified so as to be applicable to clipped end plate connections. Good agreement was obtained between the test values and those predicted by the modified model. No adverse effect on the rotational behaviour of the connections was observed to result from the asymmetry caused by clipping the end plate. Key words: beams, bolts, columns, connections, fillet welds, limit states design, moment, rotation, shear tests, steel construction.

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Experimental Investigation of Retrofitted Extended End-Plate Connections

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.284-287.1330 ◽

2013 ◽

Vol 284-287 ◽

pp. 1330-1333

Author(s):

Poi Ngian Shek ◽

M.Md. Tahir ◽

Cher Siang Tan ◽

Arizu Sulaiman

Keyword(s):

Experimental Tests ◽

Horizontal Shear ◽

Initial Stiffness ◽

Component Method ◽

End Plate ◽

Theoretical Predictions ◽

Extended End Plate ◽

Plate Connections ◽

The Moment ◽

Plate Connection

A series of retrofitted extended end-plate connections have been tested experimentally and evaluated using the component method specified in Eurocode 3. The component method decomposed the end-plate connection into several components, including the tension zone, compression zone, vertical and horizontal shear zone that occurred at the bolt, end-plate, beam and column. Based on the theoretical model, the moment resistance and the initial stiffness of a connection can be predicted. Four experimental tests on the retrofitted extended end-plate connections have been conducted to verify the proposed design method. From the experiment tests, all moment resistance of the connections showed good agreement with theoretical predictions, which establish a reliable foundation to predict the moment resistance of the retrofitted end-plate connection. All initial stiffnesses calculated from theoretical predictions do not represent the actual behaviour of tested connection. All tested connections can be classified as partial strength based on EC 3: Part 1.8, in condition the welding capacity is at least 50% higher than the capacity calculated from the component method.

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Numerical model of beem-to-column joint finite stifness

Vestnik MGSU ◽

10.22227/1997-0935.2019.2.179-187 ◽

2019 ◽

pp. 179-187

Author(s):

Ruslan I. Bagautdinov ◽

Zaur S. Daurov ◽

Yuriy P. Komarov ◽

Nikolaiy N. Mostovskiy

Keyword(s):

Numerical Modeling ◽

Design Procedure ◽

Steel Structures ◽

End Plate ◽

Seat Angle ◽

Secant Stiffness ◽

Extended End Plate ◽

Plate Connections ◽

The Moment ◽

Steel Joints

Introduction. One of the greatest accents in the steel structures researches is the optimization of the design model. It is possible to reduce the cost of steel structures, optimize moment distribution and dynamic characteristics of the frame using the finite secant stiffness, which can be obtained by the described in the paper numerical modeling method. There are a lot of perspectives for the engineer in the field of numerical modeling. Most of them are possible to implement in the design procedure nowadays, but it is important to develop methods and standards for numerical modeling, in order to obtain convenient tools and reliable results. In order to study this issue in more depth, the “moment - turn” curve was studied, maximum stress values were determined, and rigidity and strength characteristics were prepared for each type of joint for structural analysis. Materials and methods. In the program Ansys was modelling three types of steel joints: end-plate connections, double web-angle connections and top and seat angle connections. Results. For three types of joints was obtained ultimate moment, location of destruction and moment-rotation curve. For extended end-plate connections was comparison of the obtained curve with experimental data. Conclusions. Three types of steel joints were modeled in the paper. The numerical modeling results show good correlation with the experimental ones. The data about the behavior of the joints were extracted and analyzed. As result, “moment-angle of rotation” curves were obtained. Finite secant stiffness of the joints for considering steel structures was obtained in the analysis. The resulting finite secant stiffness can be used in the steel frames design procedure.

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A study of end plate connections for steel beams

Canadian Journal of Civil Engineering ◽

10.1139/l84-026 ◽

1984 ◽

Vol 11 (2) ◽

pp. 139-149 ◽

Cited By ~ 9

Author(s):

D. J. Laurie Kennedy ◽

Mona A. Hafez

Keyword(s):

Steel Beams ◽

End Plate ◽

Bolt Holes ◽

Plate Connections ◽

The Moment ◽

Plate Connection ◽

Analytical Expressions ◽

Sufficient Strength ◽

Rotation Behaviour ◽

The Web

End plates welded transversely to the web of the beam and then bolted to the supporting member should provide effective, simple connections to transmit shear. However, under loading, the end of the beam rotates and moments are developed in the connection. It is essential that the end plate connection be sufficiently flexible so that the factored moment can be attained in the beam without the development of excessive moments in the connection itself. Based on the behaviour of T-sections, where the flange of the T simulates the end plate and the stem simulates the web of the beam, both when the stem is loaded in tension and in compression, analytical procedures have been developed to predict the moment–rotation behaviour of end plate connections. Good agreement has been obtained between the predicted nonlinear moment–rotation curves and the experimental curves for eight connections covering a practical range of end plate thicknesses, gage distances between bolt holes, and connection depths. With the proposed analytical expressions the designer is able to predict the behaviour of a connection to ensure it has sufficient strength and flexibility. Key words: beams, connections, deformation, design, end plates, plates, rotation, shear strength, steel, stresses, tests.

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Analysis on the Seismic Behavior of Extended End-Plate Connections of Steel Frame Structure

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.193-194.1405 ◽

2012 ◽

Vol 193-194 ◽

pp. 1405-1413 ◽

Cited By ~ 1

Author(s):

Zhu Ling Yan ◽

Bao Long Cui ◽

Ke Zhang

Keyword(s):

Finite Element ◽

Cyclic Loading ◽

Seismic Performance ◽

Seismic Behavior ◽

Frame Structure ◽

End Plate ◽

Rigid Connection ◽

Extended End Plate ◽

Plate Connections ◽

Steel Frame Structure

This paper conducts analysis on beam-column extended end-plate semi-rigid connection joint concerning monotonic loading and cyclic loading of finite element through ANSYS program, mainly discussed the influence of parameters such as the form of end plate stiffening rib on anti-seismic performance of joint.

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Behaviour of Composite Beam with Trapezoid Web Profiled Steel Section in Sub-Assemblage Frame

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.250-253.1271 ◽

2011 ◽

Vol 250-253 ◽

pp. 1271-1274

Author(s):

Saggaff Anis ◽

M.Md. Tahir ◽

Arizu Sulaiman ◽

Poi Ngian Shek ◽

Cher Siang Tan ◽

...

Keyword(s):

Composite Beam ◽

Loading Capacity ◽

End Plate ◽

Corrugated Web ◽

Extended End Plate ◽

The Moment ◽

Composite Connections ◽

Steel Section

The objective of this paper is to present the behaviour of composite beam using Trapezoid Web Profiled (TWP) steel section by determining the moment resistance and the deflection of the beam with composite and non-composite connections. The TWP steel section is a built up section where the flange is of S355 steel section and the corrugated web of S275 steel section. Three full scales testing setting-up as sub-assemblage frame have been carried out. It was concluded that the use of composite connection and extended end-plate has reduced significantly the deflection and has significantly increased the loading capacity of composite beam.

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Influence of Composite Slab on the Nonlinear Response of Extended End-Plate Beam-to-Column Joints

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.763.818 ◽

2018 ◽

Vol 763 ◽

pp. 818-825 ◽

Cited By ~ 7

Author(s):

Roberto Tartaglia ◽

Mario D'Aniello ◽

Gian Andrea Rassati ◽

James A. Swanson ◽

Raffaele Landolfo

Keyword(s):

Concrete Slab ◽

Lateral Loads ◽

Building Frames ◽

Beneficial Effects ◽

End Plate ◽

Composite Joint ◽

Extended End Plate ◽

Plate Connections ◽

Seismic Area ◽

Steel Joints

Extended stiffened end-plate connections are widely used in seismic area due to their good performance in terms of both resistance and ductility. The most of existing studies focused on the all-steel behavior of these joints, disregarding the composite action of the concrete slab that is generally disconnected. However, the presence of the concrete slab can have beneficial effects on the structural stiffness for both gravity and lateral loads. Hence, most of the building frames are usually designed considering steel-concrete composite solution. However, the slab can strongly influence the hierarchy between beam and column and the ductility of the joint. In this paper the influence of composite deck on the response of extended stiffened end-plate joins has been investigated by means of finite element analyses (FEAs). In particular, the following details have been investigated: (i) all steel joints without slab; (ii) steel joint with disconnected slab; (iii) composite joint.

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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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