运营病害隧道健康状态评估

发布时间：2018-03-20 11:49

本文选题：公路隧道　切入点：隧道病害　出处：《西南交通大学》2017年硕士论文　论文类型：学位论文

【摘要】：近年来,伴随着我国经济的飞速发展,交通网络的完善,交通隧道的数量与日俱增。由于地质、设计、施工及造价、材料性能、地震等反面的原因,隧道的运营安全问题日益突出。隧道运营期病害将直接影响隧道的正常使用性能,甚至危及行车安全。面对数目日益庞大的隧道,如何快速有效的确定隧道健康状况合理的安排养护及整治至关重要。本文通过统计286座运营隧道定期检查数据,结合《公路隧道养护技术规范》,建立了运营隧道健康状态评估指标体系。采用熵权法及层次分析法综合确定了评估指标的综合权重,结合286座隧道定期检查病害数据,确定了各指标分级界限值,统计了各指标各级病害特征,确定了各指标的云模型的三个数字特征,运用matlab编制了正向正态云发生器。并用正向正态云发生器构建了相应的云模型形成了完整的评估体系。以云模型理论为基础建立了运营隧道健康状态综合评估模型,实现了运营隧道健康状态这一定性问题定量化,并通过现场工程实例介绍了评价体系的使用,得到了新评估体系的优势及规律:1.改进了规范评估过程中,若病害种类多但程度轻微,评估结果不理想的缺陷。2.构建的隧道健康状态云模型,综合考虑了隧道分级的模糊性与随机性,模型具有预测性质,但如出现极端病害状态,模型认定其出现概率极小,导致确定度也小,将不能正确评估其健康状态.3.整个评估体系评估过程中各个指标的加权确定度能反映个各个指标对隧道健康状况的影响程度,即能反映隧道最严重的病害类型。4.云模型为云发生器按三个数字特征产生随机数生成的带有预测性质的评估模型,确定度为波动数字,但其确定度整体趋势大小变化不大对不影响评估结果。
[Abstract]:In recent years, with the rapid development of our country's economy and the improvement of traffic network, the number of traffic tunnels is increasing day by day. Because of geological, design, construction and cost, material performance, earthquake and other negative reasons, The problem of tunnel operation safety is becoming more and more serious. The damage of tunnel operation period will directly affect the normal service performance of tunnel and even endanger the traffic safety. In the face of the increasing number of tunnels, It is very important to arrange the maintenance and treatment of tunnel health condition quickly and effectively. In this paper, 286 operating tunnels are checked regularly. Combined with the Technical Specification of Highway Tunnel maintenance, the evaluation index system of operating tunnel health is established. The comprehensive weight of evaluation index is determined by entropy weight method and analytic hierarchy process, and the disease data of 286 tunnels are inspected periodically. The threshold values of each index are determined, the disease characteristics of each index are counted, and the three numerical features of cloud model of each index are determined. The forward normal cloud generator is compiled by using matlab, and the corresponding cloud model is constructed to form a complete evaluation system. Based on the cloud model theory, a comprehensive evaluation model for the health status of the operating tunnel is established. The quantification of the health state of the operating tunnel is realized, and the application of the evaluation system is introduced through an example of field engineering. The advantages and rules of the new evaluation system are obtained. 1. 2. The tunnel health state cloud model is constructed, considering the fuzzy and randomness of tunnel classification. The model has the predictive property, but the extreme disease state occurs. The model determines that the probability of occurrence is very small, which leads to a small degree of certainty, and it will not be able to correctly assess its health status .3.The weighted certainty of each index in the whole evaluation system can reflect the degree of influence of each index on the health condition of the tunnel. That is to say, the cloud model can reflect the most serious disease type of tunnel .4.The cloud model is an evaluation model with predictive properties generated by random numbers generated by the cloud generator according to three numerical characteristics, and the degree of certainty is a fluctuating number. However, the change of the overall trend of its certainty does not affect the evaluation results.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U457.2

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