구조 BIM 환경에서의 Set-based 설계방법론을 적용한 플랫 플레이트의 철근배근 설계

Abstract

Economical efficiency considering optimal material supply chain based on pertinent structural design has been served as one of key factors in the Architecture, Engineering, and Construction (AEC) industries as the shape of buildings has become more complex, taller, and larger. The use of flat plate systems, one of the preferable slab systems for high-rise buildings, is being increased due to several advantages than other slab systems in the world. Numerous experts are working together in the process of design, construction and material supply chain. Reinforcement bar configurations are usually designed and specified by structural engineers in the construction document phase without the input from the project stakeholders such as rebar detailers, fabricators, and placers. However, the adoption of new technologies such as set-based design methodology in the practice can improve in saving time and cost, and ensure quality and safety in the construction process. The set-based design methodology helps stakeholders avoid rework and, through teamwork, develop a more globally satisfactory design through sets of design alternatives. Especially, BIM is an attractive technology which consists of 3D geometric information with pertinent interoperable data to bolster the overall system. In the Structural BIM (S-BIM), a subset of BIM, environment, set-based design methodology could be more feasible to obtain the optimal solution. In this regard, this paper is to study the efficiency of set-based design methodology approach to reinforcement steel design for flat plate systems considering interoperable system between authoring tool or physical modeler and structural Analysis and Design (A&D) program in the S-BIM environment. The globally optimal solution of reinforcement steel set based on Analytical Hierarchy Process (AHP), one of the decision making method of set-based methodology, and SRS module developed for generating 3D reinforcement steel placement with the lap-spliced length in the S-BIM environment have been performed on this research.|최근 구조물이 복잡화, 대규모화, 초고층화가 되어 오면서 적합한 구조설계를 기반 한 경제적인 구조 재료관리 차원은 AEC 산업에서 중요한 요소로 자리매김하고 있다. 프로젝트가 대규모화 될수록 그에 속한 여러 분야의 전문가들이 의사결정을 통하여 프로젝트를 진행하게 된다. 철근콘크리트 구조차원에서의 플랫 플레이트 슬래브는 타 슬래브에 비하여 시스템적 측면, 거푸집공사 측면, 건축적인 측면에서 여러 가지 장점을 보유하고 있어 초고층 구조물에 대한 적용성이 높다. 특히, 철근배근의 경우는 기존 방식의 경우 철근배근자, 노무자, 가공자와 같은 타 관계자와의 협의 없이 구조설계자의 경험적 판단이나 시행착오에서 오는 근사적 해법에만 의존하여 초기단계에서부터 단일설계를 실시하고 전 생애주기에서 현실적인 이유로 필수불가결하게 재설계를 진행하곤 하였다. 하지만, Set-based 설계 방법론과 같은 새로운 개념을 실무에 도입함으로써 구조설계 단계에서부터 의사결정시기를 앞당김으로써 시간과 경비 면에서 경제적 효율과 안정성에 대하여 복합적으로 고려할 수 있다. 이는 구조설계 그 자체가 아닌 구조 후 단계까지를 고려하여 협력체계를 구현할 수 있다. BIM은 위와 같은 Set-based 설계 방법론 적용을 위한 유연한 환경을 제공 할 수 있다. 특히, BIM의 한 부분인 Structural BIM (S-BIM)은 구조 해석 및 설계에 필요한 파라메트릭 기반의 정보를 포함하고 있고, 구조단계에서 구조 디테일링, 구조물의 물리적 형상과 해석 및 설계 모델과의 통합 모델 생성에 따른 물량산출 용이성이라는 장점을 갖고 있다. 따라서 S-BIM 환경은 Set-based 설계 방법론을 통한 최적 설계방안에 대한 도움을 줄 수 있다. 따라서, 본 연구에서는 구조 BIM 환경에서 사례기반 플랫 플레이트 객체를 대상으로 전역적인 최적 철근배근 그룹 선정 방안에 대하여 제시하고, 겹침 이음 길이를 고려한 3D 철근배근 모델 생성을 위한 SRS 모듈을 생성하였다.; Economical efficiency considering optimal material supply chain based on pertinent structural design has been served as one of key factors in the Architecture, Engineering, and Construction (AEC) industries as the shape of buildings has become more complex, taller, and larger. The use of flat plate systems, one of the preferable slab systems for high-rise buildings, is being increased due to several advantages than other slab systems in the world. Numerous experts are working together in the process of design, construction and material supply chain. Reinforcement bar configurations are usually designed and specified by structural engineers in the construction document phase without the input from the project stakeholders such as rebar detailers, fabricators, and placers. However, the adoption of new technologies such as set-based design methodology in the practice can improve in saving time and cost, and ensure quality and safety in the construction process. The set-based design methodology helps stakeholders avoid rework and, through teamwork, develop a more globally satisfactory design through sets of design alternatives. Especially, BIM is an attractive technology which consists of 3D geometric information with pertinent interoperable data to bolster the overall system. In the Structural BIM (S-BIM), a subset of BIM, environment, set-based design methodology could be more feasible to obtain the optimal solution. In this regard, this paper is to study the efficiency of set-based design methodology approach to reinforcement steel design for flat plate systems considering interoperable system between authoring tool or physical modeler and structural Analysis and Design (A&D) program in the S-BIM environment. The globally optimal solution of reinforcement steel set based on Analytical Hierarchy Process (AHP), one of the decision making method of set-based methodology, and SRS module developed for generating 3D reinforcement steel placement with the lap-spliced length in the S-BIM environment have been performed on this research.