The introduction and the influence of semi-rigid connections in framed structures subjected to fire

Beam finite element; Frame structures; Numerical modeling; Semi-rigid connection; Structures in fire; Temperature; Degrees of freedom (mechanics); Numerical methods; Structural frames; Beam - column connection; Finite element software; Global structure analysis; Internal degrees of freedom; Rotational restraints; Semirigid connections; Structural capacities; Temperature dependent; Fire resistance

Abstract :

[en] This paper describes a recent development in a finite element software dedicated to the modeling of structures in fire which deals with the way connections are simulated in global structure analyses. This development allows modeling semi-rigid, temperature-dependent connections between beam-type finite elements. It relies on the definition of additional internal degrees of freedom in the elements. The objective is to enable efficient analysis of the influence of semi-rigid connections on the global structural response and on the demands for these connections. The theory and implementation are described in a geometrically non-linear software with large displacements. Then, a 3D frame structure is analyzed as a case study. The analyses show that structural capacity and failure mode depend on the degree of rotational restraint at the beam-column connections and at the base of the columns. The maximum fire resistance is obtained for an intermediate degree of restraint between beams and columns, while higher restraints lead to an unfavorable sway failure mode. The case study illustrates the capabilities introduced by the new development, and demonstrates that the effects of the connections on global response is complex, justifying the need for practical numerical methods for design and parametric analyses of structures in fire. © 2020 Elsevier Ltd

Disciplines :

Civil engineering

Author, co-author :

Gernay, Thomas ; Johns Hopkins University > Department of Civil and Systems Engineering

Franssen, Jean-Marc ; Université de Liège - ULiège > Département ArGEnCo > Ingénierie du feu

Language :

English

Title :

The introduction and the influence of semi-rigid connections in framed structures subjected to fire

Publication date :

2020

Journal title :

Fire Safety Journal

ISSN :

0379-7112

eISSN :

1873-7226

Publisher :

Elsevier Ltd

Volume :

114

Peer reviewed :

Peer Reviewed verified by ORBi

Funders :

Holmes Fire

Available on ORBi :

since 11 May 2020

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Bibliography

Dvorkin, E.N., Onte, E., Oliver, J., On a non‐linear formulation for curved Timoshenko beam elements considering large displacement/rotation increments. Int. J. Numer. Methods Eng. 26:7 (1988), 1597–1613.
Dutta, A., White, D.W., Large displacement formulation of a three-dimensional beam element with cross-sectional warping. Comput. Struct. 45:1 (1992), 9–24.
Franssen, J.M., Gernay, T., Modeling structures in fire with SAFIR®: theoretical background and capabilities. J. Struct. Fire Eng. 8:3 (2017), 300–323.
Spyrou, S., Davison, B., Burgess, I., Plank, R., Experimental and analytical studies of steel joint components at elevated temperatures. Fire Mater. 28:2‐4 (2004), 83–94.
Demonceau, J.F., Cerfontaine, F., Jaspart, J.P., Resistance of steel and composite connections under combined axial force and bending including group effects: analytical procedures and comparison with laboratory tests. J. Constr. Steel Res. 160 (2019), 320–331.
Citipitioglu, A.M., Haj-Ali, R.M., White, D.W., Refined 3D finite element modeling of partially-restrained connections including slip. J. Constr. Steel Res. 58:5–8 (2002), 995–1013.
Al-Jabri, K.S., Seibi, A., Karrech, A., Modelling of unstiffened flush end-plate bolted connections in fire. J. Constr. Steel Res. 62:1–2 (2006), 151–159.
Sadeghian, V., Kwon, O.S., Vecchio, F., A framework for multi-platform simulation of reinforced concrete structures. Eng. Struct. 181 (2019), 260–270.
Khan, M.A., Jiang, L., Cashell, K.A., Usmani, A., Virtual hybrid simulation of beams with web openings in fire. J. Struct. Fire Eng. 11:1 (2019), 118–134, 10.1108/JSFE-01-2019-0008.
Block, F.M., Burgess, I.W., Davison, J.B., Plank, R.J., The development of a component-based connection element for endplate connections in fire. Fire Saf. J. 42:6–7 (2007), 498–506.
Dong, G., Burgess, I., Davison, B., Sun, R., Development of a general component-based connection element for structural fire engineering analysis. J. Struct. Fire Eng. 6:4 (2015), 247–254.
Al-Jabri, K.S., Davison, J.B., Burgess, I.W., Performance of beam-to-column joints in fire—a review. Fire Saf. J. 43:1 (2008), 50–62.
Hu, Y., Davison, B., Burgess, I., Plank, R., Component modelling of flexible end-plate connections in fire. Int. J. Steel Struct. 9:1 (2009), 1–15.
Mao, C.J., Chiou, Y.J., Hsiao, P.A., Ho, M.C., Fire response of steel semi-rigid beam–column moment connections. J. Constr. Steel Res. 65:6 (2009), 1290–1303.
Hantouche, E.G., Abboud, N.H., Morovat, M.A., Engelhardt, M.D., Analysis of steel bolted double angle connections at elevated temperatures. Fire Saf. J. 83 (2016), 79–89.
Fischer, E.C., Selden, K.L., Varma, A.H., Experimental evaluation of the fire performance of simple connections. J. Struct. Eng., 143(2), 2016, 04016181.
Rahnavard, R., Thomas, R.J., Numerical evaluation of the effects of fire on steel connections; Part 1: simulation techniques. Case Stud. Ther. Eng. 12 (2018), 445–453.
Rahnavard, R., Thomas, R.J., Numerical evaluation of the effects of fire on steel connections; part 2: model results. Case Stud. Thermal. Eng., 13, 2019, 100361.
Jelenić, G., Crisfield, M.A., Non-linear ‘master-slave’ relationships for joints in 3-D beams with large rotations. Comput. Methods Appl. Mech. Eng. 135:3–4 (1996), 211–228.
Selamet, S., Garlock, M., Guidelines for modeling three dimensional structural connection models using finite element methods. International Symposium: Steel Structures: Culture & Sustainability, 2010, September.
Carrera, E., Pagani, A., Petrolo, M., Use of Lagrange multipliers to combine 1D variable kinematic finite elements. Comput. Struct. 129 (2013), 194–206.
Shyam-Sunder, S., Gann, R.G., Grosshandler, W.L., Lew, H.S., Bukowski, R.W., Sadek, F., Lawson, J.R., Federal Building and Fire Safety Investigation of the World Trade Center Disaster: Final Report of the National Construction Safety Team on the Collapses of the World Trade Center Towers (NIST NCSTAR 1) (No. National Construction Safety Team Act Reports (NIST NCSTAR)-1)., 2005.
De Ville de Goyet, V., L'analyse statique non linéaire par la méthode des éléments finis des structures spatiales formées de poutres à section non symétrique. PhD thesis., 1989, Université de Liège.
Greisch, Note de développement de l’élément 85: Élément poutre spatiale « acier » avec ressorts 7DDLs aux deux extrémités. 2015, Bureau Greisch, Liege Technical note.
European Committee for Standardization (CEN), Eurocode 3: Design of Steel Structures—Part 1–2: General Rules—Structural Fire Design. EN 1993-1-2. 2005, CEN, Brussels, Belgium.
Franssen, J.M., Cowez, B., Gernay, T., Effective stress method to be used in beam finite elements to take local instabilities into account. Fire Saf. Sci. 11 (2014), 544–557.
Maraveas, C., Gernay, T., Franssen, J.M., An equivalent stress method to account for local buckling in beam finite elements subjected to fire. J. Struct. Fire Eng. 10:3 (2019), 340–353.
Gernay, T., Millard, A., Franssen, J.M., A multiaxial constitutive model for concrete in the fire situation: theoretical formulation. Int. J. Solid Struct. 50:22–23 (2013), 3659–3673.
European Committee for Standardization (CEN), Eurocode 2: Design of Concrete Structures—Part 1–2: General Rules—Structural Fire Design. EN 1992-1-2. 2004, CEN, Brussels, Belgium.
Gernay, T., Franssen, J.M., A formulation of the Eurocode 2 concrete model at elevated temperature that includes an explicit term for transient creep. Fire Saf. J. 51 (2012), 1–9.
Benlakehal, N.O., Lamri, B., Abdelhak, K., Bouchair, A., Mesquita, L.M.R., Simulation numerique du comportement non-lineaire des portiques métalliques en situation d'incendie. ) 6ème Symposium International sur la construction en zones sismiques (SICZS2013, 2013, Universite Hassiba Benbouali de Chlef, 448–456.
Braham, M., Jaspart, J.P., Is it safe to design a building structure with simple joints, when they are known to exhibit a semi-rigid behaviour?. J. Constr. Steel Res. 60:3–5 (2004), 713–723.