火灾后预应力混凝土简支梁桥损伤程度及剩余承载能力鉴定分析  

Evaluation and Analysis of Damage Degree and Residual Load Capacity of Prestressed Concrete Simply Supported Beam Bridge After Fire

作　　者：张赞鹏[1] 文冲 贺献崇 ZHANG Zanpeng;WEN Chong;HE Xianchong(China Merchants Chongqing CommunicationsTechnology Research and Design Institute Co.,Ltd.,Chongqing 400067,China;Traffic Engineering Quality and Safety Supervision Bureau of Tibet Autonomous Region,Lhasa 850000,China)

机构地区：[1]招商局重庆交通科研设计院有限公司,重庆400067 [2]西藏自治区交通工程质量安全监督局,拉萨850000

出　　处：《公路交通技术》2019年第6期65-72,共8页Technology of Highway and Transport

摘　　要：为准确鉴定火灾后预应力混凝土简支梁桥损伤程度及剩余承载能力,以某火灾桥梁为例,针对火烧桥特点,利用现有检测技术及手段,在检测基础上建立Midas Civil计算模型进行受力分析,并通过桥梁动静载试验对剩余承载能力加以验证,从而为桥梁管养部门后期维修加固提供科学依据。For accurate identification of damage degree and residual bearing capacity of prestressed concrete beam bridge after fire,this paper takes a fire bridge as an example,according to the characteristics of the fire to the bridge,uses the existing detection technology and method,establishes MidasCivil force analysis calculation model based on detection,and verifies residual carrying capacity through dynamic and static load test of the bridge,which provides a scientific basis of later maintenance for the bridge management department.

关 键 词：损伤程度 过火温度 鉴定等级 剩余承载能力 

分 类 号：U446[建筑科学—桥梁与隧道工程]