本文選題：高等級(jí)公路 + 瀝青路面��； 參考：《重慶交通大學(xué)》2015年碩士論文

【摘要】：隨著我國(guó)經(jīng)濟(jì)的快速發(fā)展,高等級(jí)公路建設(shè)發(fā)展迅速,瀝青路面得到了廣泛的應(yīng)用。近年來(lái),瀝青路面在各種自然因素及繁重的行車荷載的作用下,出現(xiàn)了瀝青老化脫落、裂縫、松散等早期病害。這些早期損壞不僅影響路面行駛質(zhì)量,而且還會(huì)縮短道路的使用壽命,增加養(yǎng)護(hù)費(fèi)用,形成不良的社會(huì)影響,瀝青路面養(yǎng)護(hù)問題日益突顯。本論文以瀝青路面為研究對(duì)象,從瀝青路面的早期破壞出發(fā),系統(tǒng)研究了瀝青路面使用性能和預(yù)養(yǎng)護(hù)技術(shù)。論文主要研究?jī)?nèi)容體現(xiàn)在以下幾個(gè)方面。本論文詳細(xì)的分析了瀝青路面出現(xiàn)的早期損壞現(xiàn)象及其產(chǎn)生原因,探討了路面破損等級(jí),闡述了高等級(jí)公路瀝青路面路況數(shù)據(jù)采集方法、儀器設(shè)備及采集頻率,綜合分析了路面使用性能單項(xiàng)評(píng)價(jià)指標(biāo)。以貴州省都新高速為依托工程,進(jìn)行了路面早期病害調(diào)查,通過對(duì)數(shù)據(jù)的整理分析,發(fā)現(xiàn)車轍、裂縫、表面破損(麻面、坑槽)這三種破壞為主要病害類型。在對(duì)瀝青路面使用性能各單項(xiàng)指標(biāo)評(píng)價(jià)分析的基礎(chǔ)上,結(jié)合路面主要病害類型,提出了適用于高等級(jí)公路瀝青路面的使用性能評(píng)價(jià)指標(biāo)體系。根據(jù)路面使用性能特點(diǎn),從路面破損狀況、路面平整度、路面抗滑性能、路面行駛質(zhì)量、路面結(jié)構(gòu)承載力等五方面綜合評(píng)價(jià)路面使用性能。由于每項(xiàng)因素對(duì)路面使用性能的影響程度不一樣,針對(duì)依托工程的病害特點(diǎn),利用加權(quán)平均值法,改進(jìn)了路面使用性能綜合評(píng)價(jià)的方法,綜合體現(xiàn)了各因素對(duì)路面使用性能的影響程度。車轍影響路面使用性能,具有容易觀察、測(cè)量等特點(diǎn),是公路養(yǎng)護(hù)評(píng)價(jià)經(jīng)常采用的評(píng)價(jià)指標(biāo)之一。目前我國(guó)一些道路養(yǎng)護(hù)數(shù)據(jù)缺乏,而灰度理論具有原始數(shù)據(jù)少、計(jì)算簡(jiǎn)單、預(yù)測(cè)精度高的特點(diǎn),因此本文以灰色度為理論基礎(chǔ),建立了路面車轍近期的灰色預(yù)測(cè)模型,并對(duì)都新高速的車轍進(jìn)行了預(yù)測(cè),預(yù)測(cè)誤差較小,精度較高。由于灰度理論預(yù)測(cè)近期數(shù)據(jù)精度高,遠(yuǎn)期數(shù)據(jù)精度低,結(jié)合RBF混沌神經(jīng)網(wǎng)絡(luò)逼近能力和分類能力,建立了混沌神經(jīng)網(wǎng)絡(luò)模型遠(yuǎn)期車轍預(yù)測(cè)模型,為預(yù)防護(hù)性養(yǎng)護(hù)措施的選擇提供了數(shù)據(jù)支撐。對(duì)瀝青路面預(yù)防性養(yǎng)護(hù)技術(shù)進(jìn)行了分析,重點(diǎn)研究了薄層和超薄瀝青混凝土添加纖維對(duì)路面使用性能的增加及作用機(jī)理。
[Abstract]:With the rapid development of China's economy and the rapid development of high-grade highway construction, asphalt pavement has been widely used. In recent years, asphalt pavement, under the action of various natural factors and heavy traffic load, appeared the early diseases such as asphalt aging and falling off, crack, loose and so on. These early damages not only affect the running quality of the pavement, but also shorten the service life of the road, increase the maintenance cost and form the bad social influence. The problem of asphalt pavement maintenance is becoming more and more serious. This paper takes asphalt pavement as the research object, starting from the early damage of asphalt pavement, systematically studies the performance and pre-maintenance technology of asphalt pavement. The main contents of this paper are reflected in the following aspects. In this paper, the early damage phenomenon of asphalt pavement and its causes are analyzed in detail, the pavement damage grade is discussed, and the data acquisition method, equipment and frequency of high grade highway asphalt pavement are described. The single evaluation index of pavement performance is analyzed synthetically. Based on the project of Duxin Expressway in Guizhou Province, the early disease investigation of pavement was carried out. Through the analysis of data, it was found that rutting, crack and surface damage (hemp surface, pothole) were the main types of diseases. Based on the evaluation and analysis of each single index of asphalt pavement performance and combined with the main types of pavement diseases, a performance evaluation index system suitable for high grade highway asphalt pavement is put forward. According to the characteristics of pavement performance, the pavement performance is comprehensively evaluated from five aspects: pavement breakage, pavement smoothness, pavement anti-skid performance, pavement driving quality, pavement structure bearing capacity and so on. Because each factor has different influence on pavement performance, according to the disease characteristics of relying engineering, the method of weighted average value is used to improve the comprehensive evaluation method of pavement performance. The influence of various factors on pavement performance is reflected comprehensively. Rutting affects the performance of pavement and has the characteristics of easy observation and measurement. It is one of the evaluation indexes often used in highway maintenance evaluation. At present, some road maintenance data are lacking in our country, but gray scale theory has the characteristics of little original data, simple calculation and high prediction precision. Therefore, based on the grey degree theory, this paper establishes the grey prediction model of pavement rutting in the near future. The rut of Duxin high speed is forecasted. The prediction error is small and the precision is high. Because of the high precision of short-term data and low precision of long-term data in gray level theory, combined with the ability of RBF chaotic neural network to approach and classify, the long-term rut prediction model of chaotic neural network model is established. It provides data support for the choice of protective maintenance measures. The preventive maintenance technology of asphalt pavement is analyzed, and the increase of pavement performance and its mechanism of adding fiber to thin and ultra-thin asphalt concrete are studied.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U416.217;U418.6

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本文編號(hào)：1793030