大跨度连续桥梁承载能力评估及病害分析  

Bearing Capacity Evaluation and Disease Analysis of Long-span Continuous Bridge

作　　者：黄海彬 廖海峰 朱磊 Huang Haibin;Liao Haifeng;Zhu Lei(Ningbo Urban Construction Design and Research Institute Co.,Ltd.,Ningbo 315012,China;Central and Southern China Municipal Engineering Design&Research Institute Co.,Ltd.,Wuhan 430010,China;Xi'an Shengtian Construction Engineering Technology Co.,Ltd.,Xi'an 710000,China)

机构地区：[1]宁波市城建设计研究院有限公司,宁波市315012 [2]中国市政工程中南设计研究总院有限公司,武汉市430010 [3]西安圣天建筑工程科技有限公司,西安市710000

出　　处：《北方交通》2022年第1期9-12,共4页Northern Communications

摘　　要：以某跨度575.1m的预应力混凝土简支连续T梁桥为研究背景,结合工程实践,对桥梁几何形态参数以及结构自振频率进行检测,桥梁结构刚度处于较好状态;模拟分析了桥梁在各类组合作用下正截面、斜截面的承载能力、变形以及应力等关键参数,计算结果表明桥梁承载能力满足通行需求;对桥梁的常见病害进行了分析并提出了对应的加固措施。Taking a prestressed concrete simply supported continuous T-beam bridge with a span of 575.1 m as the research background,the geometric parameters and structural natural vibration frequency of the bridge are detected in combination with the engineering practice,and the structural stiffness of the bridge is in a good state;the key parameters such as bearing capacity,deformation and stress of normal and inclined sections of the bridge under various combinations are simulated and analyzed.The calculation results show that the bearing capacity of the bridge meets the traffic demand;the common diseases of the bridge are analyzed,and the corresponding reinforcement measures are put forward.

关 键 词：大跨度连续桥梁 结构安全 承载能力评估 挠度 病害分析 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]