Direct Design of Steel Bridge Using Nonlinear Inelastic Analysis

Authors: Boo-Sung Koh, Seung-Eock Kim

Abstract:

In this paper, a direct design using a nonlinear inelastic analysis is suggested. Also, this paper compares the load carrying capacity obtained by a nonlinear inelastic analysis with experiment results to verify the accuracy of the results. The allowable stress design results of a railroad through a plate girder bridge and the safety factor of the nonlinear inelastic analysis were compared to examine the safety performance. As a result, the load safety factor for the nonlinear inelastic analysis was twice as high as the required safety factor under the allowable stress design standard specified in the civil engineering structure design standards for urban magnetic levitation railways, which further verified the advantages of the proposed direct design method.

Keywords: Direct design, nonlinear inelastic analysis, residual stress, initial geometric imperfection.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1128151

References:

[1] AISC (2005). Specification for Structural Steel Buildings, American Institute of Steel Construction.
[2] AASHTO (2007). AASHTO-LRFD Bridge Design Specifications. American Association of State Highway and Transportation Officials.
[3] JSSC (2001). Performance design guideline of civil engineering steel structure, JSSC
[4] HKS (2006). ABAQUS Analysis User's Manual - Version 6.6, Hibbit, Karlsson, and Sorensen, Inc.
[5] CEN (1993). Structural steel I and H sections-Tolerances on shape and dimensions, European Committee for Standardization.
[6] CEN (1993). Structural steel I and H sections-Tolerances on shape and dimensions, European Committee for Standardization.
[7] CEN (2003). Eurocode 3: Design of Steel Structures - Part 1-1: General rules and rules for buildings, Final Draft, European Committee for Standardization.
[8] CEN (2006). Eurocode 3: Design of Steel Structures - part 1-5: Plated structural elements, Final Draft, European Committee for Standardization.
[9] ECCS (1984). Ultimate limit state calculation of sway frames with rigid joints, Technical Committee 8 - Structural stability technical working group 8.2 - System publication No. 33, 20.
[10] Civil Engineering Structure Design Standard of Urban Magnetic Levitation Railway (2008). Urban magnetic levitation railway commercialization project