연속 합성형교의 비탄성설계 방법의 개선에 관한 연구 = Improvement of Inelastic Design Method of Continuous Composit Girder Bridges

다국어 초록 (Multilingual Abstract)

Inelastic design method of steel composite girder bridges has been known as a newly developed one because it accounts for the true reserve strength of the steel girder bridges. However, it‘s application is restricted to bridges with compact section due to rotation capability after yielding of negative cross sections. It has been shown by many researches that real steel girder bridges with noncompact sections have enough rotation capacity required for inelastic design to meet strength limit state. The objective of this paper is to propose new comprehensive and practical inelastic design procedure that can be applied to even noncompact section as well as compact sections. To determine strength of the girder shakedown phenomenon has been used and the permanent-deflection limit state can be satisfied by limiting positive-bending stresses after inelastic redistribution of moments. It was assumed that the bracing requirement for compact section is satisfied.