改扩建高速公路现状评价及设计优化
发布时间：2019-01-27 17:35
【摘要】：随着社会经济的发展，原有的许多高速公路通行能力已逐渐不能满足交通需求，高速公路的改扩建是一种必然的发展趋势。本文以连霍高速洛三灵段的改扩建工程为依托，通过理论分析和工程应用，对山岭区改扩建高速公路技术现状进行了综合评价，并对改扩建高速公路的路线优化设计和上跨桥梁改造决策进行了研究，主要成果如下： （1）对依托工程的现状进行了调查，，并对现状高速公路的病害类型、病害原因等进行了分析，为现状高速公路技术性能评价和改扩建设计与施工提供了基础资料。 （2）提出了基于特尔菲-理想点法原理的高速路公路路面性能评价方法、基于《公路桥涵养护技术规范》的桥梁技术性能变权综合评定法、基于功能重要度系数法和专家评定法的高速公路路基技术状况评价方法，并以路基、路面、桥梁、隧道和沿线设施的技术状况指数为评价指标，建立了对高速公路技术状况进行综合评定的灰色聚类评价模型。 （3）建议了改扩建高速公路路线的平面线形拟合设计方法、纵断面线形拟合设计方法及平纵面组合设计的原则，并以连霍高速洛三灵段改扩建工程路线设计为例进行了路线优化处理，特别是对长大纵坡的优化处理，研究成果对同类高速公路的改扩建具有一定的参考价值。 （4）高速公路上跨桥梁改扩建方案有整体拆除重建、部分拆除接长、只拆不建和老桥不动四种。本文在对主线上跨桥梁改扩建影响因素进行分析后确定经济性、主线制约性、旧桥承载能力、旧桥正常使用性能及旧桥交通状况五个评价指标，通过层次分析法确定各评价指标权重，然后通过模糊综合评判法对各改扩建方案进行评价，选择出最优改扩建方案；并通过岳沟上跨桥梁和破胡上跨桥梁改扩建方案实例分析，验证了AHP-模糊综合决策模型的可行性。
[Abstract]:With the development of social economy, the capacity of many freeway has been unable to meet the traffic demand gradually, and the reconstruction and expansion of expressway is an inevitable trend of development. Based on the reconstruction and extension project of Luo Sanling section of Lianghuo Expressway, through theoretical analysis and engineering application, this paper makes a comprehensive evaluation on the present technical situation of the reconstruction and extension of expressway in mountain area. The main results are as follows: (1) the status quo of the supporting engineering is investigated, and the disease types of the existing expressway are investigated. The causes of the disease are analyzed, which provides the basic data for the evaluation of the technical performance of the present freeway and the design and construction of the reconstruction and extension. (2) the evaluation method of highway pavement performance based on the principle of Delphi and ideal point method is put forward, and the comprehensive evaluation method of variable weight of bridge technical performance based on the Technical Specification for Highway Bridge and culvert maintenance is put forward. Based on the functional importance coefficient method and the expert evaluation method, the evaluation method of the technical condition of the expressway embankment is presented, and the technical condition index of the subgrade, pavement, bridge, tunnel and facilities along the highway is taken as the evaluation index. A grey cluster evaluation model for the comprehensive evaluation of the technical status of expressway is established. (3) the design method of plane alignment fitting, the design method of longitudinal section alignment fitting and the principle of combination design of plane and longitudinal plane are suggested. Taking the route design of the reconstruction and extension project of LuoSanling section of Lianghuo Expressway as an example, the route optimization treatment is carried out, especially for the long and long longitudinal slope. The research results have certain reference value for the reconstruction and extension of the similar expressway. (4) there are four types of reconstruction and reconstruction scheme of expressway span bridge, including partial demolition and connection, and only four kinds of old bridges are removed or not built. Based on the analysis of the factors affecting the reconstruction and expansion of the bridge on the main line, this paper determines five evaluation indexes: economy, constraint of the main line, carrying capacity of the old bridge, normal service performance of the old bridge and traffic condition of the old bridge. The weight of each evaluation index is determined by analytic hierarchy process (AHP), and then the fuzzy comprehensive evaluation method is used to evaluate the reconstruction and extension schemes, and the optimal reconstruction and extension scheme is selected. The feasibility of the AHP- fuzzy comprehensive decision model is verified by the analysis of the reconstruction and extension schemes of the bridge over the Yue gully and the bridge on the broken Hu.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.8;U412.366
[Abstract]:With the development of social economy, the capacity of many freeway has been unable to meet the traffic demand gradually, and the reconstruction and expansion of expressway is an inevitable trend of development. Based on the reconstruction and extension project of Luo Sanling section of Lianghuo Expressway, through theoretical analysis and engineering application, this paper makes a comprehensive evaluation on the present technical situation of the reconstruction and extension of expressway in mountain area. The main results are as follows: (1) the status quo of the supporting engineering is investigated, and the disease types of the existing expressway are investigated. The causes of the disease are analyzed, which provides the basic data for the evaluation of the technical performance of the present freeway and the design and construction of the reconstruction and extension. (2) the evaluation method of highway pavement performance based on the principle of Delphi and ideal point method is put forward, and the comprehensive evaluation method of variable weight of bridge technical performance based on the Technical Specification for Highway Bridge and culvert maintenance is put forward. Based on the functional importance coefficient method and the expert evaluation method, the evaluation method of the technical condition of the expressway embankment is presented, and the technical condition index of the subgrade, pavement, bridge, tunnel and facilities along the highway is taken as the evaluation index. A grey cluster evaluation model for the comprehensive evaluation of the technical status of expressway is established. (3) the design method of plane alignment fitting, the design method of longitudinal section alignment fitting and the principle of combination design of plane and longitudinal plane are suggested. Taking the route design of the reconstruction and extension project of LuoSanling section of Lianghuo Expressway as an example, the route optimization treatment is carried out, especially for the long and long longitudinal slope. The research results have certain reference value for the reconstruction and extension of the similar expressway. (4) there are four types of reconstruction and reconstruction scheme of expressway span bridge, including partial demolition and connection, and only four kinds of old bridges are removed or not built. Based on the analysis of the factors affecting the reconstruction and expansion of the bridge on the main line, this paper determines five evaluation indexes: economy, constraint of the main line, carrying capacity of the old bridge, normal service performance of the old bridge and traffic condition of the old bridge. The weight of each evaluation index is determined by analytic hierarchy process (AHP), and then the fuzzy comprehensive evaluation method is used to evaluate the reconstruction and extension schemes, and the optimal reconstruction and extension scheme is selected. The feasibility of the AHP- fuzzy comprehensive decision model is verified by the analysis of the reconstruction and extension schemes of the bridge over the Yue gully and the bridge on the broken Hu.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.8;U412.366
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