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  本文選題：瀝青路面 + 粘彈性��； 參考：《大連理工大學(xué)》2014年碩士論文

【摘要】：眾所周知,瀝青混合料是在力學(xué)特性上為典型的粘彈性材料,要想得到層狀瀝青路面結(jié)構(gòu)在荷載作用下的力學(xué)響應(yīng),就必須對其進(jìn)行粘彈性分析。本論文主要設(shè)計分析多層粘彈性瀝青路面力學(xué)計算響應(yīng)程序,首先根據(jù)層狀彈性體系理論,根據(jù)層彈性瀝青路面力學(xué)響應(yīng)程序,可以求出在均布圓形荷載作用下力學(xué)響應(yīng)。通過設(shè)計出的程序計算路面結(jié)構(gòu)得出的結(jié)果與BISAR和KENLAYER計算得出的結(jié)果完全吻合。在進(jìn)行多層粘彈性體系計算時需要考慮時間和溫度對結(jié)構(gòu)的影響時,通過彈性一粘彈性對應(yīng)原則,可以求得在均布荷載作用下的多層粘彈性路面結(jié)構(gòu)響應(yīng)。 在求解瀝青混合料粘彈性響應(yīng)時,瀝青材料參數(shù)采用Prony系列表示。粘彈性瀝青混合料的參數(shù)用相對應(yīng)的Prony模型中的參數(shù)代替,得到在Laplace域內(nèi)的彈性響應(yīng)。再通過Laplace逆變換得到時間域內(nèi)的響應(yīng)。利用增量的卷積積分這個響應(yīng)可以是任意時刻荷載的響應(yīng)。使用該程序計算出來的彈性及粘彈性結(jié)果與有限元結(jié)果基本相同,且速度更快。該論文中的程序?qū)τ诼访媪W(xué)分析和設(shè)計提供了有效的工具。
[Abstract]:It is well known that asphalt mixture is a typical viscoelastic material in mechanical properties. In order to obtain the mechanical response of layered asphalt pavement structure under load, viscoelastic analysis must be carried out. This paper mainly designs and analyzes the mechanical response program of multi-layer viscoelastic asphalt pavement. Firstly, according to the theory of layered elastic system and the mechanical response program of layered elastic asphalt pavement, the mechanical response under uniform circular load can be obtained. The results obtained by the program are in good agreement with those obtained by BISAR and KENLAYER. When the influence of time and temperature on the structure is considered in the calculation of multilayer viscoelastic system, the response of multi-layer viscoelastic pavement under uniform load can be obtained by means of the elastic-viscoelastic correspondence principle. In solving the viscoelastic response of asphalt mixture, the asphalt material parameters are expressed by Prony series. The parameters of viscoelastic asphalt mixture are replaced by those in the corresponding Prony model, and the elastic response in Laplace domain is obtained. The response in time domain is obtained by inverse Laplace transform. By using the incremental convolution integral, the response can be the response of the load at any time. The elastic and viscoelastic results calculated by the program are basically the same as those of the finite element method, and the speed is much faster. The program in this paper provides an effective tool for pavement mechanics analysis and design.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U416.217

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 趙延慶;黃大喜;潘友強(qiáng);;柔性基層瀝青路面結(jié)構(gòu)黏彈性力學(xué)響應(yīng)分析[J];土木工程學(xué)報;2007年05期

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本文編號：1785955