瀝青混合料動態(tài)模量及其變化規(guī)律研究
發(fā)布時間:2018-08-02 08:06
【摘要】:作為一種黏彈性材料,瀝青混合料力學響應特征隨環(huán)境的變化而變化。為了對瀝青路面響應進行力學分析,需要對其變化規(guī)律進行研究。該文以AC-16瀝青混合料的動態(tài)模量室內試驗數據為基礎,對瀝青混合料動態(tài)模量隨荷載頻率及試驗溫度的變化規(guī)律進行研究,利用Sigmoidal模型及時溫等效原理擬合得到AC-16瀝青混合料的動態(tài)模量主曲線和位移因子,利用WLF方程得到位移因子隨試驗溫度變化規(guī)律的數學模型,最后給出該種瀝青混合料動態(tài)模量關于試驗溫度和荷載頻率的變化規(guī)律,以更好地模擬瀝青混合料在不同的溫度下隨汽車速度變化,其力學響應的變化規(guī)律。
[Abstract]:As a viscoelastic material, the mechanical response characteristics of asphalt mixture vary with the environment. In order to analyze the response of asphalt pavement, it is necessary to study the change law. Based on the dynamic modulus indoor test data of AC-16 asphalt mixture, the dynamic modulus of asphalt mixture with the load frequency and test is tested. The change law of temperature is studied. The main curve and displacement factor of the dynamic modulus of AC-16 asphalt mixture are fitted by the Sigmoidal model and the temperature equivalent principle is fitted. The mathematical model of the displacement factor with the change of the test temperature is obtained by using the WLF equation. Finally, the dynamic modulus of the asphalt mixture is given with respect to the test temperature and load carrier frequency. In order to better simulate the variation of mechanical response of asphalt mixture with vehicle speed at different temperatures.
【作者單位】: 山西省交通科學研究院;
【分類號】:U414
[Abstract]:As a viscoelastic material, the mechanical response characteristics of asphalt mixture vary with the environment. In order to analyze the response of asphalt pavement, it is necessary to study the change law. Based on the dynamic modulus indoor test data of AC-16 asphalt mixture, the dynamic modulus of asphalt mixture with the load frequency and test is tested. The change law of temperature is studied. The main curve and displacement factor of the dynamic modulus of AC-16 asphalt mixture are fitted by the Sigmoidal model and the temperature equivalent principle is fitted. The mathematical model of the displacement factor with the change of the test temperature is obtained by using the WLF equation. Finally, the dynamic modulus of the asphalt mixture is given with respect to the test temperature and load carrier frequency. In order to better simulate the variation of mechanical response of asphalt mixture with vehicle speed at different temperatures.
【作者單位】: 山西省交通科學研究院;
【分類號】:U414
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