Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Characteristics of Cross-section of Sinusoidal Corrugated Web Girder in Accordance with Minimum Weight Design

최소중량설계에 의한 사인형 주름웨브보의 단면 특성

  • 손수덕 (한국기술교육대학교 건축공학부) ;
  • 유미나 (한국기술교육대학교 대학원 건축공학부) ;
  • 이승재 (한국기술교육대학교 건축공학부)
  • Received : 2012.08.02
  • Published : 2012.10.25
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Abstract

This paper investigates minimum weight structural design of sinusoidal corrugated web girder and characteristics of optimum cross-section in accordance with structural design codes. To do an optimum design, we consider objective function as minimum weight of the girder, use the constraint functions as slenderness ratio, stress and the girder deflection, and adopt the design variables concerning cross-section of the girder. We also choose EN 1993-1-5 and DASt-R015 to compare shear design codes of sinusoidal corrugated web. With this, we adopt a simply supported girder as mathematical model, and carry out genetic algorithm simulation to investigate the characteristics of minimum weight and cross-section of the girder. The result of the investigation shows that optimum cross-section area of EN 1993-1-5 is smaller than that of DASt-R015 and can be designed in more slenderness. A yield strength increase brings the decrease in the optimum cross-section area in the simple beams under concentrated load and uniform load. The minimum weight design of sinusoidal corrugated web shows a tendency to increase design variables with load increase. Besides, corrugated web thickness shows a tendency of stable increase regardless the yielding strength of corrugated web girder, and shows a similarity in the increase of optimal cross-section area.

Keywords

Acknowledgement

Supported by : 국토해양부

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