KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Parametric Modeling Method for 3D Assembly Design of Parts Composing Superstructure Module on Modular Steel Bridge

모듈러 강교량 상부모듈 구성파트의 3차원 조립설계를 위한 파라메트릭 모델링 방법

  • 이상호 (연세대학교 토목환경공학과) ;
  • 안현정 (연세대학교 토목환경공학과)
  • Received : 2012.04.24
  • Accepted : 2012.10.23
  • Published : 2013.02.04
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Abstract

A parametric modeling method, one of the core technology of BIM (Building Information Modeling), is proposed for efficient 3D assembly design among components of a superstructure module of modular steel bridge. Assembly system is classified into 3 levels as LoD (Level of Details) for 3D assembly design of the parts. Components forming 3D shape of the parts are identified and defined as parameters, variables depending on parameters, or constants independent of the parameters. Then, spatial assembly rules among the parts are defined according to the assembly system. Positional relations among the identified shape components are defined for mating spatial position and geometrical relations are defined for constraining degree of freedom on X, Y, and Z axis. Finally, a standardized template is designed by applying the rules to 3D based assembly design for the parts of the superstructure module. In addition, applicability of the parametric modeling method is demonstrated by testing the shape variation of the superstructure module according to changing the defined parameters.

본 연구에서는 모듈러 강교량 상부모듈 구성파트의 효율적인 3차원 조립설계를 위하여 BIM(Building Information Modeling)의 핵심기술 요소인 파라메트릭 모델링 방법을 연구하였다. 모듈러 강교량 상부모듈 구성파트의 3차원 조립설계를 위하여 모듈의 조립체계를 상세수준(LoD: Level of Details) 3단계로 정의하였다. 모듈을 구성하는 각 파트들의 3차원 형상구성을 위한 요소들을 추출하여 매개변수, 매개변수에 따라 변하는 종속변수, 매개변수에 따라 변하지 않는 고정 값으로 구분하여 정의하였으며, 조립체계 단계에 따라 파트간의 공간적 조립규칙을 정의하였다. 공간적 위치를 구속하기 위하여 3차원 형상구성 요소간의 위치관계를 정의하였으며, X, Y, Z 축에 대한 자유도를 구속하기 위하여 기하학적 관계를 정의하였다. 또한, 정의한 조립규칙을 적용하여 모듈러 강교량 상부모듈의 3차원 조립설계를 위한 표준템플릿을 구축하였으며, 정의한 매개변수의 변화에 따른 강교량 상부모듈의 형상변화 검토를 통하여 파라메트릭 모델링 방법의 적용성을 검증하였다.

Keywords

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