【摘要】：隨著近年來國民經(jīng)濟快速發(fā)展,道路交通量日益增加,汽車軸載逐漸加重,路面的超年限使用和重載車輛的影響,導致水泥混凝土路面面臨著嚴峻的考驗,水泥混凝土路面的維修改造任務極其艱巨。本文從分析水泥混凝土路面的病害出發(fā),論述了水泥路面的破損類型,分析了病害的原因以及維修(改造)方法,并重點對舊水泥混凝土路面脫空的檢測與判別技術(FWD檢測評價方法和雷達檢測方法)進行了理論分析,通過FWD作用下水泥混凝土路面面板變形特性的數(shù)值分析和現(xiàn)場試驗,提出了利用彎沉-荷載曲線斜率判定板底脫空的建議值以及碎石化技術的適用條件;通過水泥混凝土路面多錘頭碎石化的工藝試驗,確定了落錘高度、錘間距、質量控制等施工參數(shù),并依托廣西平百公路水泥路面改造工程,對碎石化效果進行了評價。
[Abstract]:With the rapid development of the national economy in recent years, the traffic volume of the road is increasing day by day, the axle load of the vehicle is gradually aggravated, the use of the road surface over the years and the influence of the heavy-duty vehicles, which lead to the cement concrete pavement facing a severe test. The task of cement concrete pavement maintenance and reconstruction is extremely arduous. Based on the analysis of the disease of cement concrete pavement, this paper discusses the damage type of cement pavement, analyzes the cause of the disease and the method of maintenance (renovation). This paper also focuses on the theoretical analysis of the detection and discrimination technology (FWD detection and radar detection) of the voids in the old cement concrete pavement, and through the numerical analysis and field test of the deformation characteristics of the cement concrete pavement slab under the action of FWD. The suggested value of the slope of the deflection load curve to determine the void in the slab bottom and the applicable conditions of the gravel technology are put forward. Based on the technical test of multi-hammer crushed stone on cement concrete pavement, the construction parameters such as drop weight height, hammer spacing and quality control are determined. Based on the cement pavement reconstruction project of Pingbai highway in Guangxi, the crushed stone effect is evaluated.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U416.216

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本文編號：2379905