【摘要】 介绍国内外叠合式钢-混凝土组合梁应用及研究成果,分析这种组合梁存在的主要问题,重点探讨各种最新研究的型钢-混凝土组合梁的受力及变形特点,在分析的基础上,认为加强钢-混凝土间的锚固、纵向截面的抗剪承载力以及斜截面的抗剪承载力是叠合式钢-混凝土组合梁发展应解决的关键问题,提出的新型组合梁加强了钢与混凝土间的粘结,提高了结构的抗剪能力及抵抗变形的能力,加强了结构的整体性及抗火能力更多还原

【Abstract】 The applications of steel-concrete composite beams are introduced. The main problems of this type of composite beams, especially the characteristic of the force and deformation of the newly developed steel-concrete composite beams are analyzed. Based on the analysis, it is proposed that the increase of the bond strength between concrete and steel, shearing force in longitudinal section and resisting shearing force of inclined section are key issues in the development and applications of steel-concrete composite beams. A new-style composite beam is designed which will not only strengthen the coherence of steel-concrete but also increase the ability of resisting deformation and shearing forces, resisting fire, and keeping integrity of structure as well.更多还原