Evaluation on a load-carrying capacity of the stiffened plates subjected to biaxial forces considering the local buckling of the longitudinal ribs

Author:

Yasuda Kousuke1,Yamaguchi Takashi1,Osakabe Seiji2

Affiliation:

1. Osaka Metropolitan University, Osaka, Japan

2. CTI Engineering Co. LTD, OSAKA, Japan

Abstract

<p>This study analyzed load-carrying capacity of stiffened plates under one and two-directional forces with variations in the rib arrangement and the ratio of applied vertical to horizontal stress. The analysis was based on the Metropolitan Expressway Company's standard drawings for Steel Deck Structures. In the case that subjected to uniform compression along the bridge axis, reducing the number of longitudinal ribs from 8 to 6 increased the width-to-thickness ratio parameter from 0.54 to 0.70, with little impact on the obtained load-carrying capacity. On the other hand, the case under uniform compression perpendicular to the bridge axis, reducing ribs resulted in decrease of load- carrying capacity. In the case that subjected to biaxial forces, the load-carrying capacity curves depend on the width-to-thickness ratio parameters of each direction, and it demonstrated the difference buckling resistance of the ribs.</p>

Publisher

International Association for Bridge and Structural Engineering (IABSE)

Reference5 articles.

1. Specifications for Highway Bridges, Japan Road Association, 2017. (in Japanese)

2. Ultimate Strength And Interaction Curve Of Stiffened Plates Subjected To Biaxial In-plane Forces;Toshiyuki KITADA;土木学会論文集 (Doboku Gakkai rombunshū)

3. Dassault System: Abaqus Online Documentation, 2022

4. Sadao Komatsu and Toshiyuki Kitada: Elasto- plastic Finite Displacement Analysis of Longitudinally Stiffened Plates in Compression, Journal of JSCE, Vol. 296, pp.1-12, 1980. (in Japanese)

5. Tsutomu Usami: Guidelines for Stability Design of Steel Structure 2nd Edition-2005, Japan Society of Civil Engineers. (in Japanese)

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