干旱荒漠区路面使用性能指数PQI演变特性的研究

发布时间：2018-09-05 10:50

【摘要】：公路交通在社会发展的各个方面都起着十分重要的作用。近几年来,伴随着经济的崛起,我国在交通事业上也取得了很大的成果,但在发展的进程中也出现了许多亟待解决的难题,尤其是在公路养护管理方面,由于对路面使用性能的状态及演变规律掌握不准确,导致养护时间和养护方法制定不合理,甚至造成资金的浪费。对路面使用性能演变规律的研究,首先要对其进行客观准确地评价。本文根据新疆地区路面病害调研情况及各单项指标的检测数据分析,确定该地区具有代表性的评价指标为路面破损评价指标PCI、路面平整度评价指标RQI、路面结构强度评价指标PSSI,并结合该地区的实际情况,通过变权理论确定各指标的权重,事实表明,变权理论有效的解决了恒定权重评价方法中某项指标评分值过低且权重较小的情况下对综合评价结果影响不大的缺点,动态的权重也是评价结果更加适合路面的实际情况。本文采用变权综合法及物元模型分别对路面使用性能PQI进行了评价,并与规范中评价结果对比,得出变权综合法和物元模型在路面使用性能评价中更加合理、客观和准确。在对路面使用性能客观评价的基础上,分别用变权综合法中的PQI评分值及物元模型中的关联度对路面使用性能的演变进行了回归分析,并在Exel中拟合出回归方程,通过对两种方法的比较,得出基于物元模型的回归方程更能代表路面使用性能PQI的演变规律。
[Abstract]:Highway traffic plays a very important role in all aspects of social development. In recent years, along with the rise of economy, our country has also made great achievements in the field of transportation, but in the process of development, there are many problems that need to be solved, especially in the field of highway maintenance and management. Because of the inaccurate understanding of the state and evolution law of pavement performance, the maintenance time and maintenance method are unreasonable, and even lead to the waste of funds. In order to study the evolution law of pavement performance, it is necessary to evaluate it objectively and accurately. Based on the investigation of road surface diseases in Xinjiang and the data analysis of each single index, The representative evaluation index in this area is the pavement damage evaluation index PCI, pavement smoothness evaluation index RQI, pavement structure strength evaluation index PSSI, and according to the actual situation of the area the weight of each index is determined by the variable weight theory. The facts show that the variable weight theory effectively solves the disadvantage that the evaluation method of constant weight has little influence on the result of comprehensive evaluation when the score value of one index is too low and the weight is small. Dynamic weight is also the result of the evaluation more suitable for the actual situation of the road. In this paper, the variable weight synthesis method and matter-element model are used to evaluate the pavement performance PQI, and compared with the evaluation results in the specification, it is concluded that the variable-weight synthesis method and matter-element model are more reasonable, objective and accurate in pavement performance evaluation. Based on the objective evaluation of pavement performance, the evolution of pavement performance is analyzed by using the PQI score of variable weight synthesis method and the correlation degree in matter-element model, and the regression equation is fitted in Exel. By comparing the two methods, the regression equation based on matter-element model can better represent the evolution law of pavement performance PQI.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U416.2

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