Study on Mechanical Performance of the End-Plate Connection Joint between H-Section Beam and Closed Specially-Shaped Column

2012 ◽  
Vol 256-259 ◽  
pp. 724-731
Author(s):  
Heng Hua Wang ◽  
Xi Yu Wang ◽  
Yang Qing Liu ◽  
Xiao Yu
Keyword(s):  
Cyclic Load ◽  
Mechanical Performance ◽  
Initial Stiffness ◽  
Finite Element Software ◽  
End Plate ◽  
Energy Dissipation Capacity ◽  
Ultimate Moment ◽  
The Moment ◽  
Plate Connection ◽  
Specially Shaped Column

This paper brings forward a new kind of specially-shaped column and its end-plate connection joint with H-section beam. The static loading and cyclic loading simulation tests of the joint are carried out using the finite element software. Under static load, the moment-rotation curves with different parameters are obtained, and then the effects of those parameters on the initial stiffness and the ultimate moment and the stress distribution of key positions of the joint are discussed; under cyclic load, the moment-rotation hysteretic curves are obtained and mechanical behaviors of the basic test specimen are comprehensively analyzed. The results indicate that the joint possesses not only reasonably high initial stiffness and ultimate capacity, but also excellent ductility and energy-dissipation capacity.

Experimental Investigation of Retrofitted Extended End-Plate Connections

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.

Analytical Study of End-Plate Connection on Cruciform Column Section

2015 ◽  
Vol 74 (4) ◽  
Author(s):  
Boon Cheik Tan ◽  
Poi Ngian Shek ◽  
Mahmood Md Tahir ◽  
Ker Shin Mu
Keyword(s):  
Analytical Study ◽  
Experimental Results ◽  
Analytical Prediction ◽  
Initial Stiffness ◽  
Component Method ◽  
End Plate ◽  
Column Section ◽  
Extended End Plate ◽  
The Moment ◽  
Plate Connection

This paper presents an analytical study on flush end-plate (FEP) and extended end-plate (EEP) connections connected to cruciform column section using component method. The objective of this study is to predict the moment resistance and initial stiffness of FEP and EEP connections on cruciform column section. A series of FEP and EEP connections are tested in laboratory. The connection tests consist of four FEP and four EEP specimens with different configuration. Component method outlined in the publication of Steel Construction Institute and British Constructional Steelwork Association are based on BS5950 and Eurocode 3 (EC3) are used to predict the moment resistance and initial stiffness of the tested specimens. The experimental results are then used to validate the analytical predictions. As compare to the experimental results, all moment resistance of the connections coincide well with analytical predictions. Analytical prediction for initial stiffness using EC3 does not show good agreement with the experimental results. This study shows that the component method can be used to predict the moment resistance of FEP and EEP connections on cruciform column section. Further study need to be carried out for initial stiffness to obtain accurate analytical representation.

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

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.

Energy dissipation capacity of an unstiffened extended end-plate connection with a SMA plate

2016 ◽  
Vol 16 (4) ◽  
pp. 1309-1317 ◽  
Author(s):  
J. G. Yang ◽  
J. W. Kim ◽  
J. H. Lee ◽  
J. S. Kang ◽  
D. S. Pae
Keyword(s):  
Energy Dissipation ◽  
End Plate ◽  
Energy Dissipation Capacity ◽  
Extended End Plate ◽  
Plate Connection

Seismic Performance of Medium Thick-Walled Cold-Formed Steel Top-and-Seat Angle Joint

2014 ◽  
Vol 501-504 ◽  
pp. 1609-1614
Author(s):  
Zhong Peng ◽  
Jun Huang ◽  
Shao Bin Dai ◽  
Ji Xiong Liu
Keyword(s):  
Energy Dissipation ◽  
Failure Modes ◽  
Mechanical Performance ◽  
High Strength ◽  
Initial Stiffness ◽  
Element Analysis ◽  
Equivalent Viscous Damping ◽  
Seat Angle ◽  
Cold Formed Steel ◽  
Energy Dissipation Capacity

3 medium thick-walled cold-formed steel top-and-seat angle joints were designed. The ABAQUS nonlinear finite element analysis on earthquake resistance behaviors of the joints were conducted under low cyclic loading. The results indicate that the failure processes and failure modes of 3 specimens are basically the same, the destruction of joints derive from buckling deformation of the top-and-seat angle and buckling of the steel beam flanges; the shapes of hysteresis curves of all specimens are obvious pinch together and present spindle, the displacement ductility factors are greater than 5.5, the equivalent viscous damping factors are greater than 0.158, all the specimens possess good energy dissipation capacity. The secant stiffness variations are almost similar, each specimen represents significant degradation. Increase the thickness of angle and diameter of high-strength bolt can improve the mechanical performance of the joints. Increase the bolt diameter, the ductility, energy dissipation capacity and initial stiffness enhance obviously, however, there is no apparent effect while increasing the thickness of angle.

Theoretical and experimental behaviour of a hybrid semi-rigid glulam beam-to-column connection with top and seat angles

2020 ◽  
Vol 23 (10) ◽  
pp. 2057-2069
Author(s):  
Haotian Tao ◽  
Min Mao ◽  
Huifeng Yang ◽  
Weiqing Liu
Keyword(s):  
Theoretical Model ◽  
Cyclic Load ◽  
High Energy ◽  
Test Results ◽  
Glulam Beam ◽  
Energy Dissipation Capacity ◽  
The Moment ◽  
High Energy Dissipation ◽  
Reversed Cyclic ◽  
Theoretical Results

This article proposes to use the bolted top and seat angles to provide excellent moment resistance and high energy dissipation capacity for glulam beam-to-column connection. Angles are anchored on the glulam beam using the glued-in steel plate technology and connected to the column by anchorage bolts. A theoretical model is presented in this article to evaluate the moment-resistant properties of the connection based on the component method. To validate the accuracy of the theoretical model, several hybrid connections are tested under monotonic and reversed cyclic load. The test results showed that the proposed hybrid connection has a high rotational stiffness and excellent moment resistance. The theoretical results are also consistent with those of the experimental model.

Research on seismic performance of prefabricated concrete-filled steel tubular frame joints

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Shufeng Li ◽  
Di Zhao ◽  
Yating Zhou
Keyword(s):  
Seismic Performance ◽  
High Strength ◽  
Steel Tube ◽  
Equivalent Viscous Damping ◽  
Concrete Filled Steel Tube ◽  
Content Type ◽  
Finite Element Software ◽  
End Plate ◽  
Good Energy ◽  
Plate Connection

PurposeConcrete-filled steel tube structures are widely used for their high bearing capacity, good plasticity, good fire resistance and optimal seismic performance. In order to give full play to the advantages of concrete-filled steel tube, this paper proposes a prefabricated concrete-filled steel tube frame joint.Design/methodology/approachThe concrete-filled steel tube column and beam are connected by high-strength bolted end-plate, and the steel bars in the concrete beam are welded vertically with the end-plates through the enlarged pier head. In addition, the finite element software ABAQUS is used numerically to study the seismic performance of the structure.FindingsThe ductility coefficient of the joint is in 1.72–6.82, and greater than 2.26 as a whole. The equivalent viscous damping coefficient of the joint is 0.13–3.03, indicating that the structure has good energy dissipation capacity.Originality/valueThe structure is convenient for construction and overcomes the shortcomings of the previous on-site welding and on-site concrete pouring. The high-strength bolted end-plate connection can effectively transfer the load, and each component can give play to its material characteristics.

Experimental Investigation of End-Plate Connection with Cruciform Column Section

2011 ◽  
Vol 250-253 ◽  
pp. 3730-3733
Author(s):  
Poi Ngian Shek ◽  
M.Md. Tahir ◽  
Cher Siang Tan ◽  
Ahmad Beng Hong Kueh
Keyword(s):  
Experimental Investigation ◽  
Theoretical Model ◽  
Failure Modes ◽  
Failure Mechanisms ◽  
Experimental Results ◽  
Tension Zone ◽  
Initial Stiffness ◽  
End Plate ◽  
Plate Connection ◽  
The Cost

This paper presents an experimental investigation on typical end-plate connection with reduced beam-to-end plate welding, connected to cruciform column (CCUB) section. The study aims to reduce the cost of fabrication and materials. Two tests were conducted to study the behavior of the proposed connections and evaluate the failure modes, moment resistance, initial stiffness and rotational capacity of the connections. The experimental results indicated that the failure mechanisms for the tested specimens begin with the end-plate yielding followed by bolt slippage that was limited to the tension region of the joint due to the tension forces exerted through the top bolt rows. The experimental results will then be used to validate the theoretical model for the T-stub idealization of the tension zone.

Seismic Performance of Moment End-Plate Connections to CFT Column under Cyclic Loading

2013 ◽  
Vol 680 ◽  
pp. 205-210
Author(s):  
Ikhlas S. Sheet ◽  
Umarani Gunasekaran
Keyword(s):  
Cyclic Loading ◽  
Cyclic Load ◽  
Experimental Program ◽  
Steel Beams ◽  
Welding Zone ◽  
End Plate ◽  
Plate Connections ◽  
Cft Column ◽  
Plastic Rotations ◽  
Plate Connection

An experimental program under cyclic load is performed on two half-scale interior moment end-plate connections to concrete filled tubular (CFT) columns. Flat and curved stiffened extended end-plates were welded to the steel beams in the shop, and bolted on the site to the square and circular CFT column tubes respectively, using steel rods passing through the column. The experimental results demonstrated that both circular and rectangular end-plate connections showed similar performance in a ductile manner and the stiffener elements were effective to form the plastic hinges away from the welding zone, also the proposed curved end-plate connection with rods passing through the column in “X” shape was effective. The test specimens showed a plastic rotations capacity of 0.054 radian.

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