【摘要】 本文采用能量法对普通钢筋混凝土连续梁和预应力混凝土连续梁的弯矩调幅与截面 曲率延性之间的关系进行了研究。重点讨论了预应力连续梁中次弯矩和轴向预压力对弯矩调 幅的影响。从理论上证明了预应力次弯矩在塑性铰转动能力不够时能提高连续梁弯矩调幅能 力的这一观点。更多还原

【Abstract】 Principle of energy is used to study the moment redistribution and the section curvature ductility in reinforced and prestressed concrete continuous beams. The emphasis of the paper is placed on the influence of the secondary moment and the axial prestress on the moment redistribution. It is shown that the secondary moment can facilitate the moment redistribution when the rotational capacity of plastic hinge is not enough.更多还原