Analysis of Steel Bridge by means of Specially Orthotropic Plate Theory

특별직교이방성 판이론을 응용한 강교량의 해석

  • 한봉구 (서울산업대학교 구조공학과) ;
  • 김덕현 (서울산업대학교 구조공학과)
  • Received : 2000.11.14
  • Published : 2001.02.27

Abstract

The specially orthotropic plate theory is used for analysis of panels made of girders and cross-beams. The cross-sections of both girders and cross-beams ar H-type. A method of calculating natural frequencies corresponding to the modes of vibration of beams and tower structures with irregular cross sections and arbitrary boundary conditions was developed. The results of application of this method to steel bridge by using specially orthotropic plate theory is presented. The result is compared with that of the beam theory. Finite difference method is used for this purpose. The influence of the $D_{22}$ stiffiness on the natural frequency is rigorously investigated. According to numerical examination given in this paper the result by the plate theory is 2.43 times stiffer than of beam theory.

Acknowledgement

Supported by : Seoul National Univeristy

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