doi:10.3850/978-981-08-6218-3_key-9
Beam Element for Local Buckling Analysis of Steel Structures
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Professor Eiki Yamaguchi Department of Civil Engineering Kyushu Institute of Technology Kitakyushu, Japan. yamaguch@civil.kyutech.ac.jp |
Biography
Eiki Yamaguchi is a Professor and the Head of the Department of Civil Engineering at Kyushu Institute of Technology.
His expertise is in structural mechanics and numerical method. He is currently interested in the area of steel structures, especially steel bridges, actively working on the design, mechanical behavior, durability and maintenance of steel bridges. He is also an expert on weathering steel bridges.
Eiki is a member of several committees in charge of design codes of practice for steel and steel-composite structures, and is involved in various technical activities in JSCE and JSSC. He serves on the editorial boards of several international journals and has published over 100 scientific papers. He is also an adviser to many bridge owners on their bridge management schemes.
Abstract
Since the nonlinear finite element analysis of a steel structure by shell/solid elements is expensive, effort has been made to conduct the local buckling analysis of a steel structure by beam elements. To this end, the structural deterioration due to local buckling of a steel member is often implemented in constitutive relationship. The approach inevitably leads to the constitutive relationship of softening type, which however does not readily yield mesh objective result. The present study proposes a beam element to overcome the problem: in a local-buckling zone, average state variables instead of local state variables are used to describe the constitutive relationship once the local buckling takes place. The effectiveness of the proposed procedure is verified by solving example problems.
