S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Architecture and Architectural Engineering (건축학과) Journal Papers (저널논문_건축학과)
강구조를 위한 직접비탄성설계법
Direct Inelastic Design for Steel Structures
- 박홍근; 엄태성
- Issue Date
- 한국강구조학회논문집, 제16권, 제2호, pp. 181-190
- inelastic design; plastic design; secant stiffness; inelastic analysis; steel structure; 비선형설계; 소성설계; 할선강성; 비선형해석; 강구조
- A new inelastic design method performing iterative calculations using secant stiffness was developed. Since the proposed design method uses linear analysis, it is convenient and stable in numerical analysis. At the same time, the proposed design method can accurately estimate the inelastic strength and ductility demands of the members by performing iterative calculation. In the present study, the procedure of the proposed design method was established, and a computer program incorporating the proposed method was developed. Design examples using the proposed method were presented, and its advantages were highlighted by comparisons with existing design methods using elastic or plastic analysis. Unlike the existing inelastic design methods performing the preliminary design on the structure and checking its validity using nonlinear analysis, the proposed integrated analysis-design method can directly calculate the strength and ductility demands of each member. In addition, the proposed design method can address the inelastic design strategy intended by the engineer, such as strength and ductility limits of members ana the design concept. of strong-column and weak-beam. As a result, economical and safe design can be achieved.