基于荷载试验的桥梁加固结构承载能力评估分析  

Analysis on the Evaluation of Bridge Reinforced Structure Bearing Capacity Based on Load Test

作　　者：刘登林 LIU Denglin(Shanghai Tongfeng Engineering Consulting Co.,Ltd.,Shanghai 200444,China)

机构地区：[1]上海同丰工程咨询有限公司,上海200444

出　　处：《工程技术研究》2023年第9期25-28,共4页Engineering and Technological Research

摘　　要：目前,对桥梁承载能力的评估以理论计算和荷载试验为主,荷载试验检测方法具有客观性、全面性和真实性,应用更广泛。文章基于荷载试验的方法,对一座加固后的预应力混凝土连续箱梁桥进行应变、偏载系数、校验系数、相对残余变形、结构刚度和底板混凝土裂缝试验分析,明确加固后桥梁的实际承载能力,并分析总结此类桥梁荷载试验检测的工作要点,以供参考。At present,the evaluation of bridge bearing capacity is mainly based on theoretical calculation and load test.The load test detection method is objective,comprehensive and authentic,and is more widely used.Based on the method of load test,a reinforced prestressed concrete continuous box girder bridge is tested and analyzed for strain,eccentric load coefficient,calibration coefficient,relative residual deformation,structural stiffness and concrete cracks in the bottom plate.The actual bearing capacity of the bridge after reinforcement is clarified,and the key points of load test detection of such bridges are analyzed and summarized for reference.

关 键 词：桥梁加固 承载能力 荷载试验 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]