Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Experiments on Flexural Resistance of Longitudinally Stiffened Plate Girder with Slender Web

수평보강재로 보강된 세장복부판을 갖는 플레이트거더의 휨강도 평가 실험

  • Park, Yong Myung (Department of Civil Engineering, Pusan National University) ;
  • Lee, Kun Joon (Department of Civil Engineering, Pusan National University) ;
  • Ju, Ho Jung (Department of Civil Engineering, Pusan National University) ;
  • Jo, Sung Hoon (Department of Civil Engineering, Pusan National University)
  • Received : 2014.10.06
  • Accepted : 2014.10.29
  • Published : 2014.12.27
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Abstract

In this paper, a series of experiments for the evaluation of flexural resistance of longitudinally stiffened plate girder with slender web were conducted. For the purpose, four plate girder specimens with and without longitudinal stiffener were fabricated for the web slenderness of 219 and 156. The test results were compared with the current AASHTO LRFD and Eurocode 3 codes, respectively. As presented in the previous paper by the authors, it was acknowledged that the AASHTO LRFD code could considerably underestimate the flexural resistance of longitudinally stiffened girder with slender web and the proposed method in the previous paper could estimate the flexural resistance reasonably.

본 연구에서는 수평보강재로 보강된 세장복부판을 갖는 플레이트거더의 휨강도 평가를 위한 실험을 수행하였다. 이를 위해 복부판세장비가 219와 156이며 수평보강재가 없는 경우와 설치한 경우의 총 4개 거더를 제작하였다. 실험으로부터 구해진 휨강도를 현행 AASHTO LRFD 기준과 Eurocode 3 기준과 비교하였다. 이로부터 AASHTO LRFD 기준은 저자들이 발표한 선행 논문에서 제시한 바와 같이 수평보강 거더의 휨강도를 크게 저평가하는 것이 입증되었으며, 선행 논문에서 제안한 휨강도 평가 방법은 보강 거더의 휨강도를 합리적으로 평가할 수 있음이 입증되었다.

Keywords

References

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