發(fā)布時(shí)間：2018-10-14 10:38

【摘要】：水泥穩(wěn)定碎石基層由于其良好的路用性能，被廣泛應(yīng)用于我國(guó)公路建設(shè)中。但是，由于其對(duì)溫度和濕度有較強(qiáng)的敏感性，引起瀝青路面開裂，形成以反射裂縫為主的一系列病害，縮短瀝青路面的使用壽命，降低了路面結(jié)構(gòu)的可靠性，并在一定程度上制約我國(guó)公路交通事業(yè)的健康發(fā)展。近年來(lái)，隨著我國(guó)交通的發(fā)展以及施工技術(shù)水平的提高，我國(guó)室內(nèi)試驗(yàn)方法不能實(shí)際反映材料真實(shí)性能，因此，開展基于振動(dòng)成水泥穩(wěn)定碎石材料設(shè)計(jì)研究具有重要意義。 論文通過(guò)分析振動(dòng)壓實(shí)原理以及振動(dòng)壓實(shí)儀工作原理，確定合理的振動(dòng)參數(shù)�；�于振動(dòng)試驗(yàn)方法、逐級(jí)填充法以及I法確定多級(jí)嵌擠骨架密實(shí)級(jí)配，通過(guò)分形理論研究，提出將雙動(dòng)態(tài)平衡參數(shù)D-R作為振動(dòng)法水泥穩(wěn)定碎石級(jí)配評(píng)價(jià)指標(biāo)。由振動(dòng)擊實(shí)法與重型擊實(shí)法的對(duì)比分析表明，采用振動(dòng)法確定的壓實(shí)標(biāo)準(zhǔn)具有明顯的優(yōu)勢(shì)。分析研究基于振動(dòng)成型水泥穩(wěn)定碎石抗壓強(qiáng)度、劈裂強(qiáng)度與抗壓回彈模量的力學(xué)特性，揭示各因素的影響規(guī)律，建立強(qiáng)度預(yù)估方程，并確定三者之間的線性關(guān)系。根據(jù)莫爾強(qiáng)度理論，分析研究水泥穩(wěn)定碎石內(nèi)摩阻角與粘結(jié)力，繼而提出基于振動(dòng)成型水泥穩(wěn)定碎石結(jié)構(gòu)評(píng)價(jià)指標(biāo)，內(nèi)摩阻比C=z/j，并確定C值的合理范圍。運(yùn)用劈裂疲勞試驗(yàn)，，建立水泥穩(wěn)定碎石疲勞方程，根據(jù)相關(guān)系數(shù)進(jìn)行理論修正。
[Abstract]:Cement-stabilized macadam base is widely used in highway construction because of its good road performance. However, due to its strong sensitivity to temperature and humidity, it causes cracking of asphalt pavement, forms a series of diseases, which are mainly reflected cracks, shortens the service life of asphalt pavement, and reduces the reliability of pavement structure. And to a certain extent restricts the healthy development of highway transportation in China. In recent years, with the development of traffic and the improvement of construction technology in our country, the indoor test method in our country can not actually reflect the real properties of materials. Therefore, it is of great significance to study the design of vibration-based cement stabilized macadam materials. By analyzing the principle of vibration compaction and the working principle of vibratory compaction instrument, the reasonable vibration parameters are determined in this paper. Based on the vibration test method, step by step filling method and I method, the multi-stage compacted skeleton dense gradation is determined. Through the study of fractal theory, the double dynamic equilibrium parameter D-R is proposed as the evaluation index of the vibrating cement-stabilized crushed stone gradation. The comparative analysis between the vibration compaction method and the heavy compaction method shows that the compaction standard determined by the vibration method has obvious advantages. Based on the mechanical properties of compressive strength, splitting strength and modulus of compressive resilience of vibration-forming cement-stabilized macadam, the influence law of various factors is revealed, and the prediction equation of strength is established, and the linear relationship between them is determined. Based on the Mohr strength theory, the internal friction angle and bond force of cement stabilized macadam are analyzed and studied, and then the evaluation index and internal friction ratio C ~ (z / j) of cement stabilized macadam structure based on vibration forming are put forward, and the reasonable range of C value is determined. The fatigue equation of cement stabilized macadam was established by splitting fatigue test.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U416.214;U414

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