本文選題：瀝青路面 + 馬歇爾試驗(yàn)��； 參考：《重慶交通大學(xué)》2015年碩士論文

【摘要】：隨著我國(guó)交通運(yùn)輸事業(yè)的快速發(fā)展,我國(guó)高速公路的發(fā)展速度也越來(lái)越快,尤其是瀝青混凝土路面作為高等級(jí)公路的主要路面結(jié)構(gòu)形式,在高等級(jí)公路中的比例也越來(lái)越大。為解決瀝青路面過(guò)早出現(xiàn)破壞的現(xiàn)象,本文提出進(jìn)行瀝青路面疲勞行為及材料疲勞參數(shù)方面的研究,把瀝青材料和組成路面結(jié)構(gòu)的混凝土的疲勞行為作為本文的研究目標(biāo),并把荷載和溫度對(duì)瀝青混凝土路面結(jié)構(gòu)產(chǎn)生的影響進(jìn)行綜合分析,從而希望能對(duì)更為理想的瀝青路面設(shè)計(jì)方法的探討起到幫助作用。主要作了以下工作:①介紹瀝青路面疲勞理論,并總結(jié)出針對(duì)瀝青路面疲勞的幾種模型,包括現(xiàn)象學(xué)法、耗散能疲勞模型和斷裂力學(xué)疲勞模型。②馬歇爾法確定AC-25瀝青混凝土在滿足規(guī)范要求的前提下,確定三種不同的級(jí)配類型,其中把靠近規(guī)范下限的相對(duì)粗級(jí)配稱為Ⅰ型,把規(guī)范要求的上下限取平均值稱為Ⅱ型,相應(yīng)的把接近規(guī)范上限的相對(duì)細(xì)級(jí)配稱為Ⅲ型。③對(duì)上述瀝青混合料試件進(jìn)行劈裂強(qiáng)度試驗(yàn),給出未凍融和凍融一次劈裂強(qiáng)度試驗(yàn)結(jié)果。④對(duì)AC-25Ⅰ型未凍融瀝青混合料試件進(jìn)行在不同溫度、不同應(yīng)力比,不同荷載條件下進(jìn)行劈裂疲勞試驗(yàn);給出未凍融瀝青混合料的劈裂疲勞曲線和疲勞方程,包括雙對(duì)數(shù)和單對(duì)數(shù)兩種情況。⑤分析凍融對(duì)瀝青混凝土疲勞特性的影響。給出未經(jīng)凍融和經(jīng)過(guò)一次凍融后的AC-25Ⅰ型、Ⅱ型、Ⅲ型瀝青混凝土試樣疲勞曲線和疲勞方程,包括雙對(duì)數(shù)和單對(duì)數(shù)兩種情況。⑥分析有無(wú)凍融環(huán)境下,瀝青混凝土所表現(xiàn)出的疲勞特性有和差別。⑦分析溫度是如何影響瀝青混凝土的疲勞特性的。試驗(yàn)所得到的AC-25Ⅰ型瀝青混凝土劈裂強(qiáng)度隨溫度的升高而降低。并以AC-25Ⅰ型瀝青混凝土為例,分析溫度對(duì)其疲勞特征參數(shù)n和k產(chǎn)生怎樣的影響規(guī)律進(jìn)行分析。⑧對(duì)瀝青混凝土產(chǎn)生疲勞破壞的機(jī)理進(jìn)行研究分析。⑨對(duì)影響瀝青混凝土的疲勞性能的相關(guān)因素進(jìn)行總結(jié)。并分外部因素以及內(nèi)部因素進(jìn)行詳細(xì)闡述。通過(guò)以上的研究工作,對(duì)于研究瀝青混凝土在不同荷載、不同溫度及有無(wú)凍融條件下的疲勞特性具有重要意義。
[Abstract]:With the rapid development of traffic and transportation in China, the speed of highway development in China is getting faster and faster, especially the asphalt concrete pavement as the main pavement structure form of high-grade highway, the proportion in high-grade highway is also increasing. In order to solve the problem of premature failure of asphalt pavement, the fatigue behavior of asphalt pavement and fatigue parameters of asphalt pavement are studied in this paper, and the fatigue behavior of asphalt material and concrete composed of pavement structure is regarded as the research goal of this paper. The influence of load and temperature on asphalt pavement structure is analyzed synthetically so as to be helpful to the discussion of more ideal asphalt pavement design method. This paper mainly introduces the theory of asphalt pavement fatigue, and summarizes several models aiming at asphalt pavement fatigue, including phenomenological method. The dissipative energy fatigue model and fracture mechanics fatigue model .2 Marshall method are used to determine three different gradation types of AC-25 asphalt concrete, and the relative coarse gradation close to the lower limit of the specification is called type I, on the premise of satisfying the requirements of the specification, three different gradation types are determined. The average value of the upper and lower limit required by the specification is called type 鈪，

本文編號(hào)：1823311