An integrated framework for nonlinear analysis of plane frames exposed to fire using the direct stiffness method

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dc.contributor.author Srivastava, Gaurav
dc.contributor.author Ravi Prakash, P.
dc.date.accessioned 2017-07-18T09:00:18Z
dc.date.available 2017-07-18T09:00:18Z
dc.date.issued 2017-10
dc.identifier.citation Srivastava, Gaurav and Ravi Prakash, P., “An integrated framework for nonlinear analysis of plane frames exposed to fire using the direct stiffness method”, Computers & Structures, DOI: 10.1016/j.compstruc.2017.05.013, vol. 190, pp. 173-185, Oct. 2017. en_US
dc.identifier.issn 0045-7949
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3035
dc.identifier.uri http://dx.doi.org/10.1016/j.compstruc.2017.05.013
dc.description.abstract A novel coupled framework for analysis of reinforced concrete (RC) and steel planar frames subjected to fire is developed with three-way coupling between heat transfer, mechanical deformations and pore pressure build-up. Structural members are discretized in space using a two-level scheme where the mechanical solver utilizes 1D line elements, and the thermal and the pore pressure solvers work on 2D finite element (FE) meshes for each sub-span used by the mechanical solver. Such a strategy enables consideration of effects of large deformations, temperature-dependent material properties (thermal, moisture transport and mechanical), and spalling. None of the earlier developed frameworks considered a three-way coupling between mechanical, thermal and pore pressure solvers without employing a full-fledged 3D FE scheme. A matrix method type approach, developed herein, enables modeling of the three main physical processes taking place in RC members during fire without the need to consider full-fidelity 3D FEM. Several numerical examples are presented to demonstrate the accuracy and applicability of the developed framework in fire analysis of normal and high strength RC and steel structures. en_US
dc.description.statementofresponsibility by Gaurav Srivastava and P. Ravi Prakash
dc.format.extent Vol. 190, pp. 173-185
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Normal strength concrete (NSC) en_US
dc.subject High strength concrete (HSC) en_US
dc.subject Spalling en_US
dc.subject Thermo-hydro-mechanical analysis en_US
dc.subject Three-way coupling en_US
dc.subject Steel structures en_US
dc.title An integrated framework for nonlinear analysis of plane frames exposed to fire using the direct stiffness method en_US
dc.type Article en_US
dc.relation.journal Computers & Structures


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