山岭重丘区SMA沥青路面施工过程质量控制机理及方法研究

发布时间：2018-01-02 11:13

本文关键词：山岭重丘区SMA沥青路面施工过程质量控制机理及方法研究　出处：《重庆交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：SMA沥青路面自从德国开始应用以来就以优良的路用性能闻名于世。目前在我国西部山岭重丘区的应用也越来越广泛,主要集中在交通荷载繁重、政治经济地位突出的路段,使用效果良好。但也出现了一些早期质量病害,经研究发现产生这些质量病害的原因主要是因为施工过程阶段质量控制不严格,采用传统质量检验方法不能保证SMA沥青路面质量的稳定性,有必要研究过程质量控制方法,提高施工管理水平。本论文研究的内容正是建立在此基础之上,通过分析SMA沥青路面施工过程,发现质量控制的重难点为:①施工过程阶段质量控制指标过多,且无重要程度之分;②施工过程中质量控制方法仍然是点点对比的静态控制方法,没有引入过程控制理念,对施工阶段的质量控制进行动态管理。因此,本文首先采用专家调研法和灰色多层次综合评价模型,从施工阶段质量控制的众多指标中选取与SMA沥青路面典型质量病害形成关联度较大的指标(油石比、级配、温度、压实度)作为SMA沥青路面施工过程质量控制的关键指标。然后将过程质量控制方法引入SMA沥青路面施工中,经分析发现SMA沥青路面施工过程属于小批量生产过程,运用小批量质量控制的基本方法,结合《公路沥青路面施工技术规范》中关于动态质量控制的要求,选取有效性较高的“均值—标准差(X?S)控制图”作为SMA沥青路面施工阶段过程质量控制的基准方法。再根据“均值—标准差(X?S)控制图”在小批量生产环境下使用控制界限的有效性不能得到保证,因此为了使控制界限更加准确合理,本文提出运用贝叶斯理论对控制图进行改进,得到的控制界限可根据样本数量大小进行调整,由此建立具有双重控制界限的“小批量施工控制图”,并以此方法作为SMA沥青路面施工过程质量控制的方法。最后依托工程实例验证“小批量施工控制图”在山岭重丘区SMA沥青路面施工过程中质量控制的适用性和可行性。研究结果表明,针对山岭重丘区特殊的气候条件及交通压力,在铺筑SMA沥青路面施工的过程中应用改进后的“小批量施工控制图”进行质量控制,可以保证施工质量的稳定性,从而减少早期质量病害的产生,增加SMA沥青路面的使用寿命。
[Abstract]:SMA asphalt pavement since Germany began since the application on the excellent road performance is well known in the world. Currently used in western mountainous areas of our country are more and more widely, mainly concentrated in the heavy traffic load, the political and economic status of prominent sections, the use effect is good. But there are also some early quality diseases, the study found that the quality of disease causes is mainly because the construction process quality control is not strict, not using the traditional test method to ensure the quality of stability of SMA asphalt pavement quality, it is necessary to study on the quality control method of the process, improve the level of construction management. The content of this thesis is built on this basis, through the analysis of SMA asphalt pavement construction process it is found that, the problems of quality control for the quality control of the construction process: stage too much, and no significant difference in degrees; the quality control in the construction process Method for static control method is still little contrast, without the introduction of process control theory, dynamic management of construction quality control. Therefore, this paper adopts expert investigation method and grey comprehensive evaluation model, select the formation of larger index associated with the typical disease quality of SMA asphalt pavement from many indexes of quality control of construction phase (in proportion, gradation, temperature, degree of compaction) as a key indicator of SMA asphalt pavement construction process quality control. Then the process quality control method is introduced into the SMA asphalt pavement construction, and found the construction process of asphalt pavement SMA belongs to the small batch production process, using the basic method of small batch quality control, combined with the requirements of the dynamic quality control technical specification for construction of highway asphalt pavement in the < >, select the high availability "mean standard deviation (X? S) control chart" as S The reference method of process quality control in construction stage of MA asphalt pavement. According to the mean standard deviation (X? S) can not effectively control the use of map control limits in small batch production environment is guaranteed, so in order to make more accurate and reasonable control limits, proposed using Bayesian theory of control chart improvement. The control limits can be adjusted according to the number of sample size, thereby establishing a dual control limits "small batch construction control chart, and this method as the method of quality control of SMA asphalt pavement construction process. Based on the feasibility and applicability of the quality control of engineering examples" small batch construction control chart in hilly mountain SMA asphalt pavement construction process. The results show that, according to the climate conditions and traffic pressure in mountainous area special, in the paving process of asphalt pavement construction SMA The quality control of the improved "small batch construction control chart" can ensure the stability of the construction quality, reduce the occurrence of early quality diseases and increase the service life of SMA asphalt pavement.

【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217

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