水泥混凝土路面平整度控制研究

发布时间：2019-05-06 13:03

【摘要】：水泥混凝土路面具有强度高、稳定性好、耐久性好、使用寿命长等优点，在交通事业建设发展中逐渐得到重视。平整度是衡量路面质量好坏的重要指标，而影响平整度的因素是多方面的，在整个水泥混凝土路面从最初的勘察、设计到后面的施工养护等，每个环节都对平整度有一定程度的影响，致使路面平整度难以控制，这对行车速度、舒适性、平稳性有较大的影响。本文依托于内蒙古准兴重载水泥高速公路，结合工程实践与相关试验，对水泥混凝土路面平整度控制进行了研究。主要研究内容如下： 1.从设计、生产力水平及施工等方面初步分析了影响路面平整度的因素，，对国内现存的路面平整度测量方法与测量指标进行了分析对比，提出研究水泥路面硬化过程中平整度的必要性和可行性，并详细论述了四轮仪检测系统的结构和原理。 2.设计了水泥混凝土路面硬化过程中和硬化后的平整度试验方案，并进行了现场试验，运用Origin软件对采集的数据进行了分析和处理，得出路面平整度的变化情况，据此找出超出范围的凹凸点或平面，可以及时的在水泥混凝土路面硬化过程中对路面不平处进行修复，取得了较好的效果。通过分析路面硬化后至通车前的平整度变化可以反映处出外界环境对路面纵向平整度的影响。 3.分别从基层、基准线、混凝土运输、混凝土布料、模板的安装、混凝土的摊铺工艺、抹面与饰面等方面与平整度的关系出发，研究其如何对路面平整度造成影响的并提出了相应的提高路面平整度的措施，为以后的混凝土路面施工提供理论支持和实际操作指导。 4.分析了影响路面平整度的常见病害(麻面、塌边及裂缝)的产生原因与防治，并提出了减小或消除这三种病害对平整度影响的方法。
[Abstract]:Cement concrete pavement has the advantages of high strength, good stability, good durability and long service life. Flatness is an important index to measure the quality of pavement, and the factors that affect smoothness are various. In the whole cement concrete pavement, from initial survey, design to construction and maintenance, and so on, Each link has a certain degree of influence on the smoothness, which makes the pavement smoothness difficult to control, which has a great impact on the driving speed, comfort and stability. In this paper, based on the Inner Mongolia Junxing heavy-duty cement highway, combined with engineering practice and related tests, the control of cement concrete pavement flatness is studied. The main contents of the study are as follows: 1. The factors affecting pavement flatness are analyzed from the aspects of design, productivity level and construction, and the existing measurement methods and indexes of pavement flatness in China are analyzed and compared. This paper puts forward the necessity and feasibility of studying evenness in the hardening process of cement pavement, and discusses in detail the structure and principle of the testing system of four-wheel instrument. 2. The flatness test scheme of cement concrete pavement during and after hardening is designed, and the field test is carried out. The collected data are analyzed and processed by using Origin software, and the change of pavement smoothness is obtained. On the basis of finding out the out-of-range concave and convex points or plane, it is possible to repair the unevenness of the cement concrete pavement in the process of hardening in time, and good results have been obtained. The influence of the external environment on the longitudinal flatness of pavement can be reflected by analyzing the change of pavement roughness from hardening to opening. 3. From the base, base line, concrete transportation, concrete cloth, formwork installation, concrete spreading technology, the relationship between flatness and plastering and finishing, etc. This paper studies how to influence pavement flatness and puts forward corresponding measures to improve pavement evenness, which provides theoretical support and practical operation guidance for the future construction of concrete pavement. 4. The causes and prevention of common diseases (such as hemp surface, edge collapse and crack) affecting pavement flatness are analyzed, and the methods to reduce or eliminate the influence of these three diseases on flatness are put forward.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.216

【参考文献】