논문 상세보기
재료 불확실성을 고려한 목재-강재 하이브리드 지붕 트러스의 신뢰성 기반 형상 최적화 KCI 등재
Reliability-Based Shape Optimization of Timber-Steel Hybrid Roof Trusses Considering Material Uncertainty
- 언어KOR
- URLhttps://db.koreascholar.com/Article/Detail/452669
pp.31-38
The construction sector is increasingly pressured to reduce embodied carbon, and long-span roof trusses—heavy consumers of structural steel—represent a critical target for decarbonization. Replacing selected steel members with glued laminated timber offers a promising pathway, yet current practice simply substitutes materials while retaining the geometry optimized for all-steel trusses. This study questions whether such an approach is adequate and reveals a systematic carbon penalty that has been overlooked. Through parametric analysis of Warren and Pratt roof trusses across practical spans (24-80 m) and Monte Carlo simulation accounting for the inherent variability of timber properties, the study demonstrates that timber-steel hybrid trusses favor fundamentally different optimal geometries—taller with fewer panels—than their all-steel counterparts. Ignoring this divergence sacrifices roughly one-third of the achievable carbon savings, and the penalty is shown to be robust under realistic material uncertainty. A set of simplified design formulas is proposed to help engineers rapidly identify the correct hybrid geometry without running a full optimization, bridging the gap between research insights and everyday design practice.
1. 서론
2. 해석 이론 및 방법
2.1 형상 차이의 발생 원리
2.2 해석 방법
3. 결과 및 고찰
3.1 결정론적 최적화 결과
3.2 몬테카를로 시뮬레이션 결과
3.3 간편 설계식 및 실무 권고
4. 결론
감사의 글
References
