马圩东大堤安全性态分析研究
发布时间：2018-10-16 11:35
【摘要】：本文在对马圩东大堤隐患及其稳定性和护岸安全性分析的基础上,构建了一套多目标、多层次的安全评价指标体系,并利用综合集成赋权方法分析各指标的重要性,建立安全评价模型,分析各堤段的安全性态。主要研究内容如下： (1)分析了马圩东大堤存在的问题；研究了堤防隐患的类型及其探测方法,着重研究了探地雷达在马圩东大堤安全检测中的应用,并对探地雷达探测结果进行了解释；研究了堤防渗流和边坡稳定性分析理论,利用二维有限元分析软件对各代表断面建立计算模型,对其渗流稳定性和边坡稳定性进行了分析；利用ABAQUS有限元软件对马圩东大堤护岸结构的应力场进行了分析。 (2)依据堤防工程安全综合评价指标体系建立的原则,并结合马圩东大堤工程实际,从堤身安全性、堤基安全性、护岸安全性三个方面出发,构建了一套多目标、多层次的综合评价指标体系。 (3)对定性指标和定量指标的度量方法做了深入研究,提出使用专家区间打分法确定定性指标评价值,使用功效系数法对定量指标进行量化处理；研究了指标的赋权方法,鉴于客观赋权法和主观赋权法各自的缺陷,采用具有综合集成特征的改进型拉开档次法确定马圩东大堤各指标的权重。 (4)研究了堤防工程的安全评价方法,着重研究了物元可拓模型在马圩东大堤安全评价中的应用,分析了各堤段的安全性,得出各堤段均处于较安全级别的结论。
[Abstract]:Based on the analysis of the hidden trouble, stability and bank protection safety of the Dongda dike in Mawei, a set of multi-objective and multi-level safety evaluation index system is constructed, and the importance of each index is analyzed by using the comprehensive integrated weighting method. The safety evaluation model is established and the safety state of each section is analyzed. The main research contents are as follows: (1) the problems existing in the east embankment of Maxu are analyzed, the types and detection methods of the hidden dangers of the dike are studied, and the application of the ground penetrating radar in the safety detection of the east embankment of Maxu is emphatically studied. The analysis theory of seepage and slope stability of embankment is studied, and the calculation model of each representative section is established by using two-dimensional finite element analysis software, and the seepage stability and slope stability are analyzed. The stress field of the revetment structure of the east dike of Maxu is analyzed by using ABAQUS software. (2) according to the principle of comprehensive evaluation index system of dike safety, and combining with the practice of Dongdongdike project in Mawei, the safety of dike body is analyzed. A set of multi-objective and multi-level comprehensive evaluation index system is constructed from three aspects: safety of embankment foundation and safety of bank protection. (3) the measurement methods of qualitative index and quantitative index are deeply studied. Expert interval scoring method is used to determine the evaluation value of qualitative index and the efficiency coefficient method is used to quantify the quantitative index, and the weighting method of the index is studied, in view of the shortcomings of objective weighting method and subjective weighting method. The weight of each index of the east embankment of Maxu is determined by the improved open grade method with comprehensive integration characteristics. (4) the safety evaluation method of the levee engineering is studied. In this paper, the application of matter-element extension model in the safety evaluation of Dongda dyke in Maxu is studied, and the safety of each section is analyzed, and the conclusion is drawn that each embankment is in a safe level.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV871
本文编号：2274233
[Abstract]:Based on the analysis of the hidden trouble, stability and bank protection safety of the Dongda dike in Mawei, a set of multi-objective and multi-level safety evaluation index system is constructed, and the importance of each index is analyzed by using the comprehensive integrated weighting method. The safety evaluation model is established and the safety state of each section is analyzed. The main research contents are as follows: (1) the problems existing in the east embankment of Maxu are analyzed, the types and detection methods of the hidden dangers of the dike are studied, and the application of the ground penetrating radar in the safety detection of the east embankment of Maxu is emphatically studied. The analysis theory of seepage and slope stability of embankment is studied, and the calculation model of each representative section is established by using two-dimensional finite element analysis software, and the seepage stability and slope stability are analyzed. The stress field of the revetment structure of the east dike of Maxu is analyzed by using ABAQUS software. (2) according to the principle of comprehensive evaluation index system of dike safety, and combining with the practice of Dongdongdike project in Mawei, the safety of dike body is analyzed. A set of multi-objective and multi-level comprehensive evaluation index system is constructed from three aspects: safety of embankment foundation and safety of bank protection. (3) the measurement methods of qualitative index and quantitative index are deeply studied. Expert interval scoring method is used to determine the evaluation value of qualitative index and the efficiency coefficient method is used to quantify the quantitative index, and the weighting method of the index is studied, in view of the shortcomings of objective weighting method and subjective weighting method. The weight of each index of the east embankment of Maxu is determined by the improved open grade method with comprehensive integration characteristics. (4) the safety evaluation method of the levee engineering is studied. In this paper, the application of matter-element extension model in the safety evaluation of Dongda dyke in Maxu is studied, and the safety of each section is analyzed, and the conclusion is drawn that each embankment is in a safe level.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV871
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