公路桥梁健康检测与技术状况评价分析

发布时间：2018-06-16 12:20

本文选题：公路桥梁 + 健康检测　；参考：《吉林大学》2017年硕士论文

【摘要】：随着我国交通事业的高速发展,国家在公路基础建设中的投入越来越大,全国各级路网建设已经形成。公路网中桥梁作为交通枢纽的重要组成部分是公路交通运输通畅的命脉之一。桥梁建成以后,受气候、温度、降雨等自然因素以及车辆、经济快速发展等社会因素导致桥梁出现大面积的不同层级的老化及各种病害,导致材料的逐渐腐蚀老化和结构损伤累加,使桥梁的健康状况和承载能力随着时间逐渐降低,从而产各种病害。在这些不同病害级别的桥梁中,一旦不能够及时的排查并消除它的安全隐患就会引起交通事故。因此需要对不同年份、不同地区、不同气候、不同交通流密度的公路桥梁进行分类分级别的健康检测是非常有必要的且意义重大。鉴于桥梁数量增加和桥梁结构种类繁多、技术复杂、管理养护不到位,今后路网管理中桥梁健康检查是必不可少的,根据健康检测诊断损伤和典型病害的结果制定相应对策提出合理化的养护管理手段,对于保障桥梁安全极为必要。目前国内桥梁检测主要通过外观检测,无损检测和承载能力检测三个方面进行定期健康检测。本文主要以京哈吉林段高速公路梁桥及吉林绕城高速兰旗大桥(斜拉桥)检测为例,结合现行公路桥梁养护规范和现行公路技术状况评定标准方法,立足于工程实际,深入分析了大型桥梁检测评估方法,另外对桥梁的技术状况进行综合分析评价,根据分析结果进而对桥梁运营提出合理的意见同时对桥梁养护给出适当的建议。
[Abstract]:With the rapid development of China's transportation industry, the national investment in highway infrastructure is increasing, and the national road network construction at all levels has been formed. As an important part of traffic hub in highway network, bridge is one of the lifelines of smooth highway transportation. After the bridge was built, due to natural factors such as climate, temperature, rainfall and social factors such as vehicles, rapid economic development, and so on, the bridge appeared a large area of different levels of aging and various diseases. As a result of the gradual corrosion and aging of materials and the accumulation of structural damage, the health status and bearing capacity of the bridge gradually decreased with time, resulting in various diseases. In these bridges with different disease levels, traffic accidents will be caused if it can not be checked and eliminated in time. Therefore, it is necessary and significant to classify and classify the health of highway bridges in different years, different regions, different climates and different traffic density. In view of the increase in the number of bridges, the wide variety of bridge structures, the complexity of technology and the inadequate management and maintenance of bridges, it is essential for health inspection of bridges in road network management in the future, According to the results of health detection and diagnosis of injuries and typical diseases, it is very necessary to make corresponding countermeasures and put forward reasonable maintenance and management measures to ensure the safety of bridges. At present, the bridge detection in China is carried out through three aspects: appearance inspection, nondestructive testing and carrying capacity testing. In this paper, taking the girder bridge of Beijing-Harbin Jilin section expressway and the Lanqi Bridge (cable-stayed bridge) around the city of Jilin Province as examples, combining with the current highway bridge maintenance code and the current evaluation standard method of highway technical condition, the paper bases itself on the engineering practice. In this paper, the methods of detecting and evaluating large bridges are deeply analyzed, and the technical conditions of bridges are analyzed and evaluated synthetically. According to the analysis results, reasonable opinions on bridge operation are put forward and appropriate suggestions on bridge maintenance are given.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U446

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