现行规范和标准关于公路拱桥技术状况评定方法的对比研究

发布时间：2018-06-22 08:13

本文选题：公路拱桥 + 技术状况　；参考：《重庆交通大学》2014年硕士论文

【摘要】：桥梁技术状况评定是以桥梁病害为基础进行开展的，自2004年《公路桥涵养护规范》（JTG H11-2004）（以下简称《养护规范》）实施以来，我国公路桥梁技术状况评定主要按照规范中规定方法进行，到2011年《公路桥梁技术状况评定标准》（JTG/T H21-2011）（以下简称《评定标准》）对《养护规范》中桥梁技术状况评定方法进行了优化改进，作为行业推荐性标准实施，至此我国桥梁技术状况评定主要参照《养护规范》和《评定标准》进行。本文从考虑桥梁部件权重、构件病害扣分叠加方法、单个病害等级判断标准三个方面入手，以《养护规范》和《评定标准》关于公路拱桥的技术状况评定为研究对象进行对比研究，并探索新的合理评定方法。本文主要内容为： ①介绍国内外既有服役桥梁技术状况现状及典型桥梁垮塌事故，说明进行桥梁技术状况评定研究的急迫性与重要性，并总结国内外桥梁技术状况评定的发展现状及现行规范的评定方法； ②总结各类型拱桥常见病害，并较全面介绍拱桥外观检查和专项检查内容以及需使用的相关仪器，同时引入层次分析法，阐述该方法在桥梁技术状况评定中的应用思路； ③对《养护规范》和《评定标准》中关于拱桥技术状况评定方法进行深入对比研究，通过比较发现《评定标准》中的评定方法更具合理性； ④根据构件评定指标对比结果，建议增加相关拱桥评定指标，同时对丰富拱桥适应性评定结论提出相关建议与尝试； ⑤逐层分析《评定标准》评定系统，探讨系统计算方法的缺陷与不足，然后借助层次分析法分别计算无桥墩旱地拱桥部件权重和构件底层指标权重，尝试通过考虑特殊桥梁的权重分配、拟定新的构件评定公式以及增加的新指标三个因素建立新的评定方法； ⑥以重庆潼南县红星大桥为工程实例，对其进行定期检查采集桥梁病害、材料性能等相关信息，，然后采用《养护规范》、《评定标准》和本文研究的新方法三种评定方法对其进行技术状况评定，并对评定结果进行对比研究，证明本文研究的新评定方法的合理性和适用性。
[Abstract]:The evaluation of bridge technical condition is carried out on the basis of bridge diseases. Since the implementation of the Highway Bridge and culvert maintenance Code (JTG H11-2004) (hereinafter referred to as "maintenance Code") in 2004, The evaluation of the technical status of highway bridges in China is mainly carried out in accordance with the methods stipulated in the Code, By 2011, JTG / T H21-2011 (hereinafter referred to as "Evaluation Standard") has optimized and improved the evaluation method of bridge technical status in the "maintenance Code", which is implemented as the industry recommended standard. So far, the technical status of bridges in China is mainly evaluated with reference to the maintenance Code and the Evaluation Standard. In this paper, considering the weight of bridge components, the method of component damage deduction and superposition, and the criteria for judging single disease grade, the paper starts with three aspects: This paper makes a comparative study on the technical status assessment of highway arch bridges by using the maintenance Code and the Evaluation Standard, and explores a new and reasonable evaluation method. The main contents of this paper are as follows: 1 the present situation and typical bridge collapse accidents of existing bridges at home and abroad are introduced, and the urgency and importance of evaluating the bridge technical status are explained. It also summarizes the development status of bridge technical status assessment at home and abroad and the evaluation methods of current norms, 2 summarizes the common diseases of various types of arch bridges, The contents of arch bridge appearance inspection and special inspection as well as the relevant instruments used are introduced. At the same time, AHP is introduced to explain the application of this method in bridge technical condition assessment. 3Contrastive study on the evaluation methods of the arch bridge's technical condition in the maintenance Code and the Evaluation Standard, and find that the evaluation method in the Standard of Evaluation is more reasonable; 4According to the comparative results of component evaluation indexes, it is suggested to increase the evaluation indexes of relevant arch bridges, and at the same time, to put forward relevant suggestions and attempts to enrich the conclusions of arch bridge adaptability assessment. This paper discusses the defects and shortcomings of the system calculation method, and then calculates the weight of the components of the dryland arch bridge without bridge piers and the index weight of the bottom layer of the component by means of the analytic hierarchy process (AHP), and attempts to consider the weight distribution of the special bridge. A new assessment method is established by drawing up a new component evaluation formula and adding three new indexes. (6) taking Hongxing Bridge in Tongnan County Chongqing as an engineering example, it carries out periodic inspection and collection of bridge diseases. Material properties and other relevant information, and then using "maintenance Code", "Evaluation Standard" and the new methods studied in this paper to evaluate the technical status of the three evaluation methods, and the results of the evaluation of a comparative study, The rationality and applicability of the new evaluation method studied in this paper are proved.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.22

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