逆向弯矩调幅法用于FRP补强框架梁极限抗弯承载力的探讨  

Discussion of Reverse Bending Moment Adjust Method in FRP Reinforcing Ultimate Bearing Bending Moment of Frame Beams

作　　者：敬登虎[1] 

机构地区：[1]东南大学土木工程学院,江苏南京210096

出　　处：《工程抗震与加固改造》2005年第2期58-60,共3页Earthquake Resistant Engineering and Retrofitting

摘　　要：根据弯矩调幅法在框架梁构件设计中的思想,提出逆向弯矩调幅法用于FRP补强框架梁构件极限抗弯承载力的设计,结合塑性理论的方法,得到该法利用内力重分布的特性,不但提高了框架梁构件的极限抗弯承载能力,而且有效防止超筋梁的出现,满足抗震加固的要求,并且施工方便,为框架梁的加固方案开辟了新思路。According to the concept of bending moment adjust method applied in the design of frame beam units,This paper puts forward reverse bending moment adjust method in FRP reinforcing ultimate bearing bending moment of frame beams, which is analyzed by plastic theory. This method can make the redistribution of internal forces of frame beams. It leads to improving of ultimate bearing bending moment of frame beams, preventing appearance of over reinforced beam, meeting the requirements of seismic reinforcing and convenient construction,and finding a new method for the reinforcing project of frame beams.

关 键 词：极限抗弯承载力 弯矩调幅法 框架梁 FRP 补强 逆向 内力重分布 构件设计 塑性理论 承载能力 抗震加固 加固方案 梁构件 施工方 新思路 

分 类 号：TU375.1[建筑科学—结构工程] TU746.3