既有钢结构桥梁检测与加固技术研究

发布时间：2018-03-14 01:06

本文选题：既有钢桥梁　切入点：检测与加固　出处：《河北工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着社会经济的快速发展，交通量也呈现出突飞猛进的增长势头，这就导致桥梁负荷的日益加重，加上旧桥的锈蚀、损坏以及原设计荷载低的限制，所以普遍桥梁通行能力不足的问题开始出现。交通量、车辆负载容量增加和桥梁破损问题日益突出。桥梁是确保交通畅通的咽喉，关键在于桥梁的承载能力和运输能力，桥梁承载能力不足是限制道路交通通行能力的关键。因此，，准确评估桥梁的实际承载能力，从经济效益和社会效益出发，选择一个合理的、有效的方法加固旧桥保证桥梁的正常运行，是道路交通领域紧迫而重要的任务。本文的研究路线：1.讨论国内外钢结构桥梁现状和钢结构桥梁检测、评估与加固的研究现状；2.对我国的钢结构桥梁特性进行详细相关介绍，包括桥梁的建设材料、施工技术和使用年限等；3.对钢结构桥梁的常见病害、成因进行介绍，并分析钢结构病害机理；4.对钢结构桥的检测内容及检测评估方法进行讨论，然后研究国内外主要的桥梁加固方法；5.以典型钢结构桥梁——兰州中山桥为例，通过实地调查检测来全面了解其病害的根本原因，并通过实验和有限元分析对其主要病害进行研究。根据检测结果对该桥的结构技术状态进行综合评定。从荷载试验结果，分析评定中山桥的加固效果；根据加固前后的检测结果和荷载试验结果对加固方案进行系统评价，验证该桥加固方法的科学有效性。
[Abstract]:With the rapid development of social economy, the traffic volume is also increasing by leaps and bounds, which leads to the increasing load of bridges, as well as the corrosion and damage of old bridges, as well as the limitation of low original design loads. Therefore, the problem of insufficient traffic capacity of bridges is beginning to appear. The problems of traffic volume, increase of vehicle load capacity and bridge breakage are becoming increasingly prominent. Bridges are the throat of ensuring smooth traffic, the key lies in the carrying capacity and transport capacity of bridges. The lack of bearing capacity of bridges is the key to limit the capacity of road traffic. Therefore, to evaluate the actual bearing capacity of bridges accurately, proceed from the economic and social benefits, choose a reasonable, It is an urgent and important task in the field of road traffic to reinforce the old bridge to ensure the normal operation of the bridge. The research route of this paper is: 1. To discuss the present situation of steel structure bridge at home and abroad and the present situation of steel structure bridge detection, evaluation and reinforcement. 2. To introduce the characteristics of steel structure bridge in our country in detail, including the construction materials of the bridge, The common diseases and causes of steel structure bridge are introduced, and the mechanism of steel structure disease is analyzed. 4. The detection content and test evaluation method of steel structure bridge are discussed. Secondly, the main methods of bridge reinforcement at home and abroad are studied. Taking the typical steel structure bridge-Lanzhou Zhongshan Bridge as an example, the fundamental causes of the disease are fully understood through field investigation and inspection. The main diseases of the bridge are studied through experiments and finite element analysis. According to the test results, the structural technical status of the bridge is comprehensively evaluated, and the reinforcement effect of the Zhongshan Bridge is analyzed and evaluated from the load test results. According to the test results and load test results before and after reinforcement, the reinforcement scheme is systematically evaluated to verify the scientific effectiveness of the bridge reinforcement method.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.7

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