A study on the inelastic and collapse behavior of realistic steel buildings using rigorous approach

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A study on the inelastic and collapse behavior of realistic steel buildings using rigorous approach

 

Author: Wong, Hon-ping
Title: A study on the inelastic and collapse behavior of realistic steel buildings using rigorous approach
Degree: M.Sc.
Year: 1995
Subject: Building, Iron and steel
Steel, Structural
Structural analysis (Engineering)
Hong Kong Polytechnic University -- Dissertations
Department: Multi-disciplinary Studies
Dept. of Civil and Structural Engineering
Pages: 1 v. (various pagings) : ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1555396
URI: http://theses.lib.polyu.edu.hk/handle/200/3432
Abstract: It is consistently claimed by many researchers that the errors associated with the conventional design method of steel structures are great in some occasions. In this study, a developed computer program NAF-GMSR is verified by European Calibration Frames. This program, incorporating the effects of joint flexibility, geometric and material nonlinearities, is then used to trace the load-deflection path of three practical skeletal steel frames namely Frame 1, Frame 2 and Frame 3. These analysis results are compared with that of conventional analysis method. By this comparative study, it is hoped to shed light and provide insight to the designers on the possible errors in conventional design method. Furthermore, the underlying principles and theories are introduced. The stiffness matrices are derived taking into account of joint flexibility and material yielding by using a pair of pseudo spring elements attaching to the beam-column element nodes. The updated Lagrangian formulation and static condensation procedures are employed in the formulation of condensed stiffness matrices. A combined numerical algorithm using the arc-length load increment in the first iteration and the minimum residual displacement scheme in subsequent iterations is used to trace the load-deflection path of the structure. In addition, some of the local and national code provisions that govern the design office practice are reviewed.

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