城市沥青路面施工质量控制研究

发布时间：2018-06-17 14:34

本文选题：城市沥青路面 + 主控项目　；参考：《长安大学》2015年硕士论文

【摘要】：近年来,随着城市规模的扩大和城市基础设施的完善,作为城市主动脉的各级道路也面临着大量的新建、改建和扩建工程。由于沥青面层具有表面平整、行车舒适、耐磨、噪音低、养护简便等特点,因此我国城市道路广泛的采用沥青道路。城市沥青道路的施工环境和施工条件比高速公路苛刻,质量控制标准不严格,导致城市沥青路面施工质量较低,不能满足城市快速发展的需求,故有必要针对沥青路面施工质量提出控制措施来改善路面质量。本文在总结城市沥青路面特点基础上分析了沥青路面质量评价的主控项目,针对压实度、厚度和平整度三个指标的评价方法探究各自的影响因素,发现每个评价指标均受多种因素影响,同时每种因素又影响多个评价指标,因此根据施工情况,考虑整个施工流程,从施工前准备、施工中控制、施工后检验三个方面来探究施工质量控制方法,在理论分析结合工程施工经验基础上提出了三条对比条件控制:有效压实时间、接缝方式和保温措施。进一步地为了获得对比条件对相应的评价指标的影响程度,在项目施工现场调研基础上设计试验方案,试验结果表明:(1)有效压实时间35min条件下机动车道厚度与设计值5cm较接近,有效压实时间25min条件下非机动车道厚度与设计值4cm较接近。(2)冷接缝方式得到的平整度容易超出规范要求的1.5mm,并且不同位置平整度波动较大,热接缝方式得到的平整度均符合规范要求,且波动较小,考虑到热接缝方式工艺的复杂性,主要建议城市快速路和主干路路面采取热接缝方式。(3)运料车单层篷布中间海绵覆盖方式得到的路面压实度大小统一,路面各个位置寿命大致相同,运料车双层篷布中间海绵覆盖方式得到的路面压实度较高,不容易产生车载破坏,但由于单层篷布中间海绵覆盖方式得到的压实度部分低于要求值95%,因此综合比较认为运料车双层篷布中间海绵覆盖方式较优。
[Abstract]:In recent years, with the expansion of urban scale and the improvement of urban infrastructure, all levels of roads, as the main body of the city, are facing a large number of new construction, reconstruction and expansion projects. Due to the features of smooth surface, comfortable driving, low noise, easy maintenance and so on, asphalt roads are widely used in urban roads in China. The construction environment and construction conditions of the urban asphalt road are more harsh than those of the expressway, and the quality control standards are not strict. As a result, the construction quality of the urban asphalt pavement is low and can not meet the needs of the rapid development of the city. Therefore, it is necessary to put forward control measures to improve the quality of asphalt pavement construction. On the basis of summing up the characteristics of urban asphalt pavement, this paper analyzes the main control items of asphalt pavement quality evaluation, and probes into the influencing factors according to the evaluation methods of compactness, thickness and smoothness. It is found that each evaluation index is affected by many factors, and each factor also affects many evaluation indexes. Therefore, according to the construction situation, the whole construction process is considered, which is controlled by the preparation before construction and construction. The construction quality control method is explored from three aspects of post-construction inspection. On the basis of theoretical analysis and engineering construction experience, three comparative conditions are put forward: effective compaction time, joint mode and insulation measures. Furthermore, in order to obtain the degree of influence of the contrast conditions on the corresponding evaluation indexes, the test scheme is designed on the basis of the project construction site investigation. The test results show that the thickness of the driveway under the effective compaction time (35min) is close to the design value 5cm, under the condition of effective compaction time (35min). Under the condition of effective compaction time (25min), the thickness of non-motorized carriageway is close to the design value. 4cm) the smoothness of cold joint is easy to exceed 1.5 mm required by the specification, and the smoothness fluctuates greatly in different positions. The smoothness obtained by the hot joint method meets the requirements of the specification, and the fluctuation is small. Considering the complexity of the hot joint process, It is mainly suggested that the road surface of urban expressway and trunk road should be covered by hot joint. (3) the road compaction degree of single layer tarpaulins covered with sponge is uniform, and the service life of each position of the road surface is roughly the same. The road surface compaction obtained by the middle sponge covering method of double-layer tarpaulins is relatively high, so it is not easy to cause on-board damage. But because the compaction degree of the middle sponge covering method of single layer tarpaulin is lower than the required value of 95%, it is considered that the middle sponge covering mode of double layer tarpaulins is better.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217

【参考文献】