碳纤维片材加固含裂缝砼梁的弯曲破坏分析  

Analysis of Bending Failure for Carbon Fiber Sheet-Reinforced Concrete Beams with a Crack

作　　者：谭茶生[1] 谢顺利[2] 曾庆敦[2] 

机构地区：[1]华南理工大学建筑学院,广州510640 [2]华南理工大学交通学院,广州510640

出　　处：《青岛理工大学学报》2006年第4期38-44,共7页Journal of Qingdao University of Technology

基　　金：国家自然科学基金(10372032);广东省自然科学基金资助项目(031394)

摘　　要：借鉴复合材料力学的分析方法,建立一种分层剪滞模型,并结合线弹性断裂力学的能量法,研究了碳纤维薄板加固含裂缝素砼梁和钢筋增强砼梁的四点弯曲破坏问题,求得的破坏荷载大多与试验较吻合,为此类构件的弯曲破坏分析提供了一种新的研究途径和方法.Using the analytical methods of composite mechanics for reference, a layering shear-lag model is established to study the stress redistributions of plain concrete and reinforced concrete beams with a crack, bonded by carbon fiber sheets, under 4-point bending. The failure loads that relatively coincide with experimental values in most cases are obtained based on the energy principle in fracture mechanics. The model and methods proposed by the paper may supply the failure analysis of the members with a new way of study.

关 键 词：碳纤维薄板加固砼梁 四点弯曲 剪滞分析 能量法 破坏荷载 

分 类 号：TU375.1[建筑科学—结构工程]