在用钢筋混凝土简支桥面梁受弯承载力估算  

EVALUATION OF BEARING CAPACITY IN BENDING FOR EXISTING SIMPLY SUPPORTED RC BRIDGE BEAMS

作　　者：任宝双[1] 钱稼茹[2] 聂建国[2] 

机构地区：[1]清华大学建筑设计研究院,北京100084 [2]清华大学土木工程系,北京100084

出　　处：《工业建筑》2000年第11期29-33,共5页Industrial Construction

基　　金：北京市科学技术委员会资助项目

摘　　要：提出了用钢筋作用系数反映粘结破坏对在用钢筋混凝土简支桥面梁受弯承载力的影响以及在用钢筋混凝土简支桥面梁受弯承载力的估算方法。有不同程度耐久性损伤的 3根已经使用 33年的钢筋混凝土桥面板梁的加载破坏试验 ,验证了钢筋作用系数取值和估算方法的合理性 ;有关文献的试验结果也验证了估算方法的可靠性。An evaluation method for bending capacity of simply supported RC bridge beams is suggested.Reinforcement function factor is adopted to reflect the influence of bonding deterioration between steel bars and concrete on the bending strength of RC bridge beams.Static loading tests of three RC bridge beams which had been in service for 33 years and had various degrees of durability deterioration were carried out.The test results show that the values of reinforcement function factor and the evaluation method are rational.Reliability of the method is also verified by the experimental results on reference.

关 键 词：钢筋混凝土简支桥面梁 耐久性损伤 受弯承载力 

分 类 号：U448.34[建筑科学—桥梁与隧道工程]