【摘要】：瀝青路面抗滑性能是關(guān)系到道路行車安全的重要指標(biāo),良好的抗滑性能是保證行車安全的有效手段。但隨著道路建設(shè)里程的增加,優(yōu)質(zhì)的抗滑表層材料逐漸減少。若能做到就地取材,不僅可以節(jié)約成本,還能起到促進(jìn)當(dāng)?shù)亟?jīng)濟(jì)發(fā)展的作用。本文擬利用云南境內(nèi)豐富的石灰?guī)r資源,以石灰?guī)r與玄武巖混合集料制備的瀝青混合料為研究對(duì)象,分析在交通荷載反復(fù)作用下其抗滑性能的衰減規(guī)律。首先,通過(guò)總結(jié)國(guó)內(nèi)外抗滑路面相關(guān)研究現(xiàn)狀,分析瀝青路面抗滑性能形成機(jī)理、評(píng)價(jià)指標(biāo)以及影響因素。以石灰?guī)r與玄武巖集料為主要對(duì)象,進(jìn)行原材料各項(xiàng)性能指標(biāo)試驗(yàn)。分析石灰?guī)r與玄武巖集料混合摻配的意義,設(shè)計(jì)出石灰?guī)r與玄武巖混合集料瀝青混合料的摻配方案,并確定室內(nèi)模擬試驗(yàn)方法。其次,在對(duì)比分析國(guó)內(nèi)外室內(nèi)磨耗抗滑試驗(yàn)儀優(yōu)缺點(diǎn)的基礎(chǔ)上,課題組研發(fā)了加速加載磨光試驗(yàn)儀。借助此儀器進(jìn)行不同摻配方案、不同粗細(xì)級(jí)配的AC-13型瀝青混合料室內(nèi)抗滑性能模擬試驗(yàn),每間隔一定時(shí)間測(cè)量試件構(gòu)造深度(MTD)和擺值(BPN),以評(píng)價(jià)摻配方案的瀝青混合料抗滑性能。試驗(yàn)結(jié)果表明:不同分組的試件抗滑指標(biāo)衰變規(guī)律一致,均表現(xiàn)為擺值在試驗(yàn)初期下降幅度大,后期相對(duì)緩慢并趨于穩(wěn)定;混合料級(jí)配越粗,越有利于提高瀝青路面抗滑性能;摻配集料的瀝青混合料抗滑性能優(yōu)于石灰?guī)r混合料,劣于玄武巖混合料,可以通過(guò)集料摻配的方式提高石灰?guī)r瀝青混合料的抗滑性能;摻配方案中玄武巖含量越高,混合料的抗滑性能越好。最后,利用PIARC模型對(duì)國(guó)際摩阻指數(shù)IFI中的參數(shù)進(jìn)行計(jì)算,通過(guò)構(gòu)造深度和擺值來(lái)確定國(guó)際摩阻指數(shù)IFI(F60,Sp),其應(yīng)用能夠很好地呈現(xiàn)瀝青路面抗滑性能變化過(guò)程及趨勢(shì),有利于公路管理部門進(jìn)行養(yǎng)護(hù)決策,也便于國(guó)際間進(jìn)行瀝青路面抗滑技術(shù)交流。
[Abstract]:The anti-skid performance of asphalt pavement is an important index of road driving safety, and good anti-skid performance is an effective means to ensure traffic safety. But with the increase of road construction mileage, high-quality anti-skid surface materials are gradually reduced. If we can make use of local materials, we can not only save cost, but also promote the development of local economy. In this paper, based on the abundant limestone resources in Yunnan Province, and taking the asphalt mixture prepared by the mixed aggregate of limestone and basalt as the research object, the attenuation law of its anti-slip performance under the repeated action of traffic load is analyzed. Firstly, through summarizing the research status of anti-skid pavement at home and abroad, the formation mechanism, evaluation index and influencing factors of anti-skid performance of asphalt pavement are analyzed. Taking limestone and basalt aggregates as main objects, the performance indexes of raw materials were tested. The significance of mixed mixing of limestone and basalt aggregate is analyzed, the mixing scheme of limestone and basalt aggregate asphalt mixture is designed, and the indoor simulation test method is determined. Secondly, on the basis of comparing and analyzing the advantages and disadvantages of the domestic and foreign indoor wear and tear tester, the research group developed the accelerated loading polishing tester. With the help of this instrument, the indoor anti-skid performance of AC-13 asphalt mixture with different mixing schemes and different coarse and fine gradation was simulated. The structural depth (MTD) and the pendulum value (BPN), were measured at certain intervals to evaluate the anti-slip performance of asphalt mixture mixed with different blending schemes. The test results show that the decay law of the anti-skid index of different groups of specimens is the same, which shows that the pendulum value decreases greatly at the initial stage of the test, and the latter stage is relatively slow and tends to be stable, the coarser the mixture gradation is, the more conducive to improving the anti-skid performance of asphalt pavement; The skid resistance of asphalt mixture mixed with aggregate is better than that of limestone mixture, which is inferior to that of basalt mixture. The better the skid resistance of the mixture. Finally, the parameters of international friction index (IFI) are calculated by using PIARC model, and the international friction index IFI (F60 Sp) is determined by constructing depth and pendulum value. The application of IFI can well present the changing process and trend of asphalt pavement skid resistance. It is propitious for highway management department to make maintenance decision and for international exchange of asphalt pavement anti-skid technology.
【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

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本文編號(hào)：2159160