高腐蚀率钢筋混凝土梁抗弯性能研究  

BENDING RESISTANCE BEHAVIOR OF SEVERELY CORRODED REINFORCED CONCRETE BEAM

作　　者：张章[1] 方从启[1] 韦福安[1] 邹巧常[1] 林国兴[1] 

机构地区：[1]上海交通大学土木工程系,上海200240

出　　处：《工业建筑》2010年第6期31-35,共5页Industrial Construction

基　　金：全国大学生创新性实验计划项目(ITP001);上海市自然科学基金项目(05ZR14073);教育部留学回国人员基金项目(2005)

摘　　要：对4根未腐蚀和16根腐蚀钢筋混凝土梁进行抗弯试验,研究重复荷载下高腐蚀率对钢筋混凝土梁变形、裂缝、承载力及破坏机理的影响。提出重复荷载下受腐蚀钢筋混凝土梁承载力计算公式。同时拟合出钢筋腐蚀率对钢筋混凝土受弯开裂的影响,并提出受腐蚀梁在重复荷载下的开裂荷载计算公式。Deformation,cracking,bearing capacity and the failure mechanism of beams with corroded reinforcement under repeated loading were investigated.Twenty sample beams,including 4 uncorroded and 16 corroded reinforced concrete beams were tested under repeated loading.The effect of corrosion rate on the bearing capacity and flexural cracking was presented.Formulas for the bearing capacity and cracking load of corroded beams under repeated load were suggested.

关 键 词：高腐蚀率 重复荷载 承载力 开裂荷载 

分 类 号：TU375.1[建筑科学—结构工程]