ANALYTICAL STUDY ON MOMENT ROTATION CURVE FOR BEAM- COLUMN STEEL CONNECTION WITH END PLATE

International Research Journal of Engineering and Technology (IRJET) e-ISSN:2395-0056

Volume: 09 Issue: 08 | Aug 2022 www.irjet.net p-ISSN:2395-0072

ANALYTICAL STUDY ON MOMENT ROTATION CURVE FOR BEAMCOLUMN STEEL CONNECTION WITH END PLATE

1 ,

2

1PG Student, Dept of civil engineering, K.L.S Gogte Institute Of Technology, Belagavi, Karnataka, India. 2Assistant Professor, Dept of civil engineering, K.L.S Gogte Institute Of Technology, Belagavi, Karnataka, India. ***

Abstract - The structure connections should be studied carefully because it is always preferable for a structural part to break before a connection. It is always a brittle failure if the structural connection fails before the member, and the results will be disastrous. Present study is focused on determining the structural performance of various beam-column connections. The three-dimensional model of beam-column connection is made by using CATIA software. ANSYS software can predict the real behaviour of beam-to-column joints in steel sections subjected to point load is presented. It helps to study the behaviour of moment rotation curve for beam-column steel connection with end plate.

Key Words: CATIA, ANASYS, End plate, Rigid joint, Semirigid joint, Hinged joint.

1. INTRODUCTION

The load distribution of structural frames is significantly influencedbyconnectionsbetweenbeamsandcolumns.The primarypurposeoftheseconnectionsistotransfertheload fromthefloorsystemandbeamstothecolumns.Initsmost basicform,thebeamisthoughttobesimplysupportedand the connection is primarily employed to transfer the end reactionofthebeamtotheendreactionofthebeamtothe column. When constraints are present, the beams end rotationsarelimited,andtheresultingendmomentscanbe used to lower the beams maximum positive moment. Moment-resistant joints are a common term for such connections. Shear connections are those that are only capableoftransmittingthebeamsreaction.Alsoofrelevance is how the link between the beam and column affects the general behaviouroftheframe.Bolting or welding can be usedtocreatetheseconnections.Theflexibilityofthejoint canrangefromahingedtoarigidjointconditiondepending onthetypeofjoiningtechniqueandcomponentsutilizeto constructthejoint.Anyjointthatproducesmorethan90% oftheidealrigidjointmomentiscategorizedasrigid,and anyjointthatproduceslessthan10%oftheidealrigidjoints momentiscategorizedasahingedjoint.Jointsthatproduce momentsandrotationsinbetweenthesetwoextremesare referredtoassemi-rigidjoints.

2. METHODOLOGY

2.1 Types of connections

a) Beam-columnwithendplateconnection

Fig -1:Beam-columnwithendplateconnection

b) Beam-columnwithEndplateandseatangleconnection

Fig -2:Beam-columnwithendplateandseatangle connection

International Research Journal of Engineering and Technology (IRJET) e-ISSN:2395-0056

Volume: 09 Issue: 08 | Aug 2022 www.irjet.net p-ISSN:2395-0072

c) Beam-column with seat angle and cleat angle connection

a)Beam-columnwithendplateconnection

Fig -3:Beam-columnwithseatangleandcleatangle connection

Table -1: SectionpropertiesofSteel Descriptions Sizes

Column ISHB400 Beam ISMB400

Endplate 160*150*10mm

Cleatangle 60*60*6mm Seatangle 150*75*12mm Stiffeners 110*375*10mm Bolt 20mm

Gradeofbolt 4.6 Gradeofsteel 415N/mm2

Table -2: MaterialpropertiesofSteel

Young’smodulusofSteel(GPa) 206 Poisson’sratioofSteel(ν) 0.3

DensityofSteel,(kg/m3) 7850

YieldStress(MPa) 415

The beam-column connections are modeled in CATIA software. CATIA stands for Computer Aided ThreeDimensionalInteractiveApplication.CATIAistheindustryleading software for 3D CAD design excellence in engineeringandproductdevelopment.Itisusedtodesign, model,analyseandconstructitems.

Fig -4:Beam-columnwithendplateconnection b) Beam-columnwithEndplateandseatangleconnection

Fig -5:Beam-columnwithendplateandseatangle connection c)Beam-columnwithtopandseatangleconnection

Fig -6:Beam-columnwithseatangleandcleatangle connection

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Volume: 09 Issue: 08 | Aug 2022 www.irjet.net p-ISSN:2395-0072

3. Results from ANSYS software

Table -3: Analysisresultofmoment-rotation

Moment (kN-m)

Model1 Model2 Model3 Rotation (rad) Rotation (rad) Rotation (rad) 0 0 0 0 30 5.445 0.1738 0.0614 60 10.891 0.3476 0.1220 90 16.337 0.5214 0.1841 120 21.783 0.6952 0.2454 150 27.229 0.8690 0.3068 180 32.674 1.0429 0.3682 210 38.120 1.2167 0.4295 240 43.566 1.3905 0.4909 270 49.011 1.5643 0.5523 300 54.445 1.7382 0.6137 330 59.903 1.9120 0.675 360 65.348 2.0858 0.7364 390 70.794 2.2596 0.7978 420 76.240 2.4330 0.8591 450 81.686 2.6072 0.9205

ii. Relative rotation is minimum for model 3 (beamcolumn with seat angle and cleat angle connection). Hence it has maximum stiffness compare to other connectionsanditcanbetreatedasrigidconnection.

iii. Relativerotationformodel2(beam-columnwithend plateandseatangleconnection)isinbetweenmodel1 (beam-columnwithendplateconnection)andmodel3 (beam-column with seat angle and cleat angle connection). Hence it can be treated as partially restrainedorsemirigidconnection.

iv. Momentinbeamendsformodel1(beam-columnwith endplateconnection)isverylessandhenceitcanbe treatedaspinnedconnection.

v. Momentinbeamendsformodel3(beam-columnwith seat angle and cleat angle connection) is more and henceitcanbetreatedasrigidconnection.

vi. Momentinbeamendsformodel2(beam-columnwith end plate and seat angle connection) is in between model1(beam-columnwithendplateconnection)and model3(beam-columnwithseatangleandcleatangle connection). Hence it can be treated as semi rigid connection.

vii. The behaviour of connections can be studied in an attractiveanddetailedmannerusingANSYS.

REFERENCES

[1] Jobin Johnson, Sony Sabu “Analytical study on bolted endplateconnectionwithdifferentboltmaterialsand bolt arrangements”, International Research Journal of Engineering and Technology (IRJET),Vol 06, pp 23950072,05 May2019.

[2] Ahmed A. Osman, Sherif A. Mourad “Performance of extended end-plate bolted connections subjected to static and blast-like loads”, Springer, pp 1-25, 8 September2021.

[3] MohammedM.Eladly,BenjaminW.Schafer“Numerical andanalyticalstudyofstainless-steelbeam-to-column extendedend-plateconnections”,Elsevier,Vol240,pp 0141-0296,4May2021.

Chart -1:Combinedmomentv/srotationgraph

4. CONCLUSIONS

i. Relative rotation is maximum for model 1 (beamcolumnwithendplateconnection).Henceithasvery lessstiffnessanditcanbetreatedaspinnedconnection.

[4] KangMa,XihaoYe,RuoyangWu,HaifengYu,TianjiaoJin “Theoretical study on the rotation angle and bearing capacityofbeam-to-column compositeconnectionsin prefabricatedsteelframes”,Elsevier,Vol45, pp23527102,5November2021.

International Research Journal of Engineering and Technology (IRJET) e-ISSN:2395-0056

Volume: 09 Issue: 08 | Aug 2022 www.irjet.net p-ISSN:2395-0072

BIOGRAPHIES

Pooja.N.Dolleshwar M.TechStructuralEngineering StudentatK.L.SGogteInstituteof Technology,Belagavi.

Prof.AnaghaGargatti AssistantProfessorat K.L.SGogte Instituteof Technology,Belagavi.

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