Nonlinear Analysis of Flat Steel Frame Structure With Semi-rigid Connection Under Static Load
Hong Son Nguyen1, Trung Thanh Pham2, Van Quan Tran3, Quang Hung Nguyen4

1Hong Son Nguyen, Hanoi Architectural University, Ha noi, Vietnam.
2Trung Thanh Pham, Vietnam Institute for Bulding Science and Technology, Hanoi, Vietnam.
3Van Quan Tran, University of Transport Technology, Hanoi, Vietnam.
4Quang Hung Nguyen, Thuyloi University, Hanoi, Vietnam.
Manuscript received on July 20, 2019. | Revised Manuscript received on August 10, 2019. | Manuscript published on August 30, 2019. | PP: 1102-1106 | Volume-8 Issue-6, August 2019. | Retrieval Number: F8325088619/2019©BEIESP | DOI: 10.35940/ijeat.F8325.088619
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Abstract: The paper aims to analyze the elasticity-plasticity of a flat steel frame structure with a beam-column connection that is a semi-rigid connection; three-spring semi-rigid link models (two linear displacement springs and one rotating displacement spring); It includes hard areas at the beam-column position, with an ideal flexible-plastic material model. Based on that, it developed algorithms by PTHH method using step-by-step applying load method and programmed to determine displacement-internal force when make semi-rigid nonlinear connection in MATLAB programming language; consider the melting conditions of the section, including the influence of moments, vertical force and shear force. Make a numerical illustration with a two stage-one span steel frame.
Keywords: Nonlinear analysis, flat steel frame, sime rigid connection, static load.