斜拉桥施工监控效果模糊综合评估
发布时间：2018-08-23 14:07
【摘要】：桥梁是道路建设的重要部分,随着全国各类桥梁交通量与交通荷载的巨增,工程质量必须大大提高才能满足当前的要求。为了使桥梁的质量和安全达到比较高的要求,对桥梁施工监控提出了更高的要求。目前工程的施工比较粗糙,离安全要求有一定的差距,遇到工程问题往往比较粗糙地处理给工程带了巨大的安全隐患。所以对问题严格把关、正确调整施工进度、严格控制施工质量。施工监控是控制工程进度和工程质量关键的步骤,由此显得至关重要。然而当前对施工监控效果的评估往往过分依赖个人经验,给出一个笼统的定性的一个评估结果,评估比较粗糙。此文利用实际工程数据对施工监控效果做出比较精准的定量分析并结合专家意见评估打分。此文运用基于层次分析法的模糊综合评估法对大跨度斜拉桥的施工监控对象进行评估研究,进行的研究工作如下：(1)文章对当下模糊数学理论在工程中的应用领域做了简单的介绍,在施工监控这块的研究论文很少见,此文是对此方面研究的一种探索。(2)仔细介绍了层次分析法的思想原理、模型与步骤,建立了大跨度斜拉桥的施工监控层次指标,则使得复杂无序的桥梁构造监控评判对象清晰化和梳理化,显示了层次分析法在工程实际应用中的可行性及优越性。当然也简单介绍了他的不足的地方和改进的方面。(3)介绍了模糊综合评估法的模糊子集与模糊运算,经典的模糊综合评估法及数学模型。简述了一级模糊综合评估与多级模糊综合评估的方法,且基于不确定性层次分析组建比较矩阵,利用两两比较法构成出的矩阵计算矩阵的最大特征向量,检验其一致性,求出最大特征向量对应的特征值再归一化求得评估对象指标的权重值。(4)文章利用两个实际工程案例：贵州六冲河特大斜拉桥和九江二桥大桥。对此两座桥的施工监控实行了模糊综合评判。明晰了它们的层次评判模型。参考《桥梁承载能力检测评定规则》及《公路养护技术规范》,将其分成5个级别：优异状况、良状况、正常状况、差状况、坏状况。运用梯形函数做隶属度函数,用其计算测点和整个指标的在不同级别中的隶属度,把此下层研究对象模糊化,逐层上上层计算,得出上层指标的模糊向量,依次计算,得到整座桥的模糊向量,最后反模糊化,计算出整座桥的评估分值。通过文章对工程桥梁的施工监控做一些评估方面的研究,是应用数学理论对这领域探讨研究,将有利于今后模糊综合评估的应用领域的拓展研究和加深研究,也能展示此法能在生活实际中恰到好处的运用。
[Abstract]:Bridge is an important part of road construction. With the huge increase of traffic volume and traffic load of all kinds of bridges in China, the engineering quality must be greatly improved in order to meet the current requirements. In order to make the quality and safety of the bridge meet higher requirements, the higher requirements for bridge construction monitoring are put forward. At present the construction of the project is rough and there is a certain gap between the safety requirements and the engineering problems. So strictly check the problem, correct adjustment of construction progress, strict control of construction quality. Construction monitoring is a key step to control the progress and quality of the project. However, at present, the evaluation of construction monitoring effect often relies on personal experience, and gives a general qualitative evaluation result, the evaluation is relatively rough. This paper uses the actual engineering data to make the accurate quantitative analysis to the construction monitoring effect and evaluates the score with the expert opinion. In this paper, the fuzzy comprehensive evaluation method based on analytic hierarchy process is used to evaluate the construction monitoring object of long-span cable-stayed bridge. The research works are as follows: (1) the paper introduces the application of fuzzy mathematics theory in engineering, and the research papers on construction monitoring are rare. This paper is an exploration of this aspect. (2) the thought principle, model and procedure of AHP are introduced carefully, and the construction monitoring hierarchy index of long-span cable-stayed bridge is established. It makes the complex and disordered monitoring and judging object of bridge structure clear and combing, which shows the feasibility and superiority of AHP in the practical application of engineering. Of course, it also briefly introduces his shortcomings and improvements. (3) the fuzzy subset and fuzzy operation of fuzzy comprehensive evaluation method, classical fuzzy comprehensive evaluation method and mathematical model are introduced. The methods of first-order fuzzy comprehensive evaluation and multilevel fuzzy comprehensive evaluation are briefly introduced. The comparison matrix is constructed based on uncertainty hierarchy analysis, and the maximum eigenvector of matrix calculated by pairwise comparison method is used to test its consistency. The eigenvalue corresponding to the maximum eigenvector is normalized to obtain the weight value of the evaluation object. (4) in this paper, two practical engineering cases are used: the Liuchong River Cable-Stayed Bridge in Guizhou and the Jiujiang second Bridge Bridge. The fuzzy comprehensive evaluation is carried out for the construction monitoring of these two bridges. Their hierarchical evaluation models are clarified. With reference to the rules for the Detection and Evaluation of Bridge bearing capacity and the Technical Specification for Highway maintenance, it is divided into five grades: excellent condition, good condition, normal condition, bad condition and bad condition. The trapezoidal function is used as membership function, the measuring points and the membership degree of the whole index in different levels are calculated, the object of this lower layer is fuzzied, the upper layer is calculated, the fuzzy vector of the upper index is obtained, and the fuzzy vector of the upper index is calculated in turn. The fuzzy vector of the whole bridge is obtained and the evaluation value of the whole bridge is calculated. Through the research on the construction monitoring and control of engineering bridges in this paper, it is the application of mathematical theory to explore this field, which will be conducive to further research in the field of fuzzy comprehensive assessment. It can also be demonstrated that this method can be used in real life.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4;U448.27
本文编号：2199301
[Abstract]:Bridge is an important part of road construction. With the huge increase of traffic volume and traffic load of all kinds of bridges in China, the engineering quality must be greatly improved in order to meet the current requirements. In order to make the quality and safety of the bridge meet higher requirements, the higher requirements for bridge construction monitoring are put forward. At present the construction of the project is rough and there is a certain gap between the safety requirements and the engineering problems. So strictly check the problem, correct adjustment of construction progress, strict control of construction quality. Construction monitoring is a key step to control the progress and quality of the project. However, at present, the evaluation of construction monitoring effect often relies on personal experience, and gives a general qualitative evaluation result, the evaluation is relatively rough. This paper uses the actual engineering data to make the accurate quantitative analysis to the construction monitoring effect and evaluates the score with the expert opinion. In this paper, the fuzzy comprehensive evaluation method based on analytic hierarchy process is used to evaluate the construction monitoring object of long-span cable-stayed bridge. The research works are as follows: (1) the paper introduces the application of fuzzy mathematics theory in engineering, and the research papers on construction monitoring are rare. This paper is an exploration of this aspect. (2) the thought principle, model and procedure of AHP are introduced carefully, and the construction monitoring hierarchy index of long-span cable-stayed bridge is established. It makes the complex and disordered monitoring and judging object of bridge structure clear and combing, which shows the feasibility and superiority of AHP in the practical application of engineering. Of course, it also briefly introduces his shortcomings and improvements. (3) the fuzzy subset and fuzzy operation of fuzzy comprehensive evaluation method, classical fuzzy comprehensive evaluation method and mathematical model are introduced. The methods of first-order fuzzy comprehensive evaluation and multilevel fuzzy comprehensive evaluation are briefly introduced. The comparison matrix is constructed based on uncertainty hierarchy analysis, and the maximum eigenvector of matrix calculated by pairwise comparison method is used to test its consistency. The eigenvalue corresponding to the maximum eigenvector is normalized to obtain the weight value of the evaluation object. (4) in this paper, two practical engineering cases are used: the Liuchong River Cable-Stayed Bridge in Guizhou and the Jiujiang second Bridge Bridge. The fuzzy comprehensive evaluation is carried out for the construction monitoring of these two bridges. Their hierarchical evaluation models are clarified. With reference to the rules for the Detection and Evaluation of Bridge bearing capacity and the Technical Specification for Highway maintenance, it is divided into five grades: excellent condition, good condition, normal condition, bad condition and bad condition. The trapezoidal function is used as membership function, the measuring points and the membership degree of the whole index in different levels are calculated, the object of this lower layer is fuzzied, the upper layer is calculated, the fuzzy vector of the upper index is obtained, and the fuzzy vector of the upper index is calculated in turn. The fuzzy vector of the whole bridge is obtained and the evaluation value of the whole bridge is calculated. Through the research on the construction monitoring and control of engineering bridges in this paper, it is the application of mathematical theory to explore this field, which will be conducive to further research in the field of fuzzy comprehensive assessment. It can also be demonstrated that this method can be used in real life.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4;U448.27
【参考文献】
相关期刊论文 前1条
1 徐家云,何晓鸣,张俊,梁善斋,鲍政慧;模糊理论在桥梁评估中的应用[J];武汉理工大学学报;2003年07期
，本文编号：2199301
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