本文選題：重載交通　切入點(diǎn)：水泥混凝土路面　出處：《河北工業(yè)大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：水泥混凝土路面作為我國(guó)高等級(jí)公路的主要結(jié)構(gòu)形式,因其強(qiáng)度高、穩(wěn)定性好、耐久性好等優(yōu)點(diǎn),得到了廣泛的應(yīng)用。然而,隨著我國(guó)公路運(yùn)輸事業(yè)的蓬勃發(fā)展,車(chē)輛超載現(xiàn)象日益嚴(yán)重,導(dǎo)致水泥混凝土路面在未達(dá)到使用年限就出現(xiàn)了錯(cuò)臺(tái)、斷裂、破碎、脫空等病害,重載交通已成為造成水泥混凝土路面早期破壞的主要原因之一。因此,研究重載交通公路特性,明確水泥混凝土路面在重載作用下的結(jié)構(gòu)響應(yīng)規(guī)律,對(duì)提高水泥混凝土路面的使用性能,延長(zhǎng)路面結(jié)構(gòu)的使用壽命具有工程實(shí)際意義。本文在總結(jié)國(guó)內(nèi)外研究現(xiàn)狀的基礎(chǔ)上,從重載交通的特性出發(fā),應(yīng)用大型有限元分析軟件ANSYS,分析混凝土路面的結(jié)構(gòu)響應(yīng)。本文主要研究?jī)?nèi)容如下:1.依據(jù)有限單元法的一般理論,借助ANSYS軟件建立水泥混凝土路面模型,對(duì)重載交通作用下路面結(jié)構(gòu)的豎向位移與應(yīng)力進(jìn)行了計(jì)算分析,探討了重載交通對(duì)水泥混凝土路面的破壞作用,并通過(guò)改變不同參數(shù),得到了路面結(jié)構(gòu)應(yīng)力和位移的變化規(guī)律。2.針對(duì)混凝土路面使用過(guò)程中出現(xiàn)的板底脫空問(wèn)題,利用ANSYS軟件對(duì)水泥混凝土路面板底脫空狀況進(jìn)行相應(yīng)的分析,研究了在不同脫空位置下水泥混凝土路面板的力學(xué)行為,總結(jié)了最大拉應(yīng)力與豎向位移的變化規(guī)律,探討了脫空時(shí)路面板承載力的變化特點(diǎn),為水泥混凝土路面板底脫空的研究提供了力學(xué)基礎(chǔ)。
[Abstract]:As the main structural form of high grade highway in China, cement concrete pavement has been widely used because of its high strength, good stability, good durability and so on. However, with the rapid development of highway transportation in our country, The phenomenon of vehicle overloading is becoming more and more serious, which leads to malfunction, fracture, breakage, void and other diseases of cement concrete pavement before it reaches its useful life. Heavy load traffic has become one of the main causes of early damage of cement concrete pavement. Therefore, the characteristics of heavy load traffic road are studied, and the structural response law of cement concrete pavement under heavy load is clarified. It is of practical significance to improve the performance of cement concrete pavement and prolong the service life of pavement structure. The structural response of concrete pavement is analyzed by using the finite element analysis software ANSYS. The main contents of this paper are as follows: 1. According to the general theory of finite element method, the model of cement concrete pavement is established by means of ANSYS software. The vertical displacement and stress of pavement structure under heavy load traffic are calculated and analyzed. The damage effect of heavy load traffic on cement concrete pavement is discussed, and different parameters are changed. The variation law of stress and displacement of pavement structure is obtained. Aiming at the problem of slab bottom void in the course of concrete pavement use, the void condition of cement concrete pavement floor is analyzed by using ANSYS software. In this paper, the mechanical behavior of cement concrete pavement slab under different void positions is studied, and the variation law of maximum tensile stress and vertical displacement is summarized, and the change characteristics of bearing capacity of pavement slab are discussed. It provides a mechanical basis for the study of the voids in cement concrete pavement floor.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：U416.216

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 楊斌,陳拴發(fā),胡長(zhǎng)順;重載及脫空耦合狀態(tài)下混凝土路面疲勞壽命分析[J];中南公路工程;2005年03期

相關(guān)碩士學(xué)位論文 前2條

1 劉濤;地基不均勻支承水泥混凝土路面板的荷載應(yīng)力分析[D];長(zhǎng)安大學(xué);2009年

2 鄭秉乾;水泥混凝土路面板溫度翹曲與軸載耦合作用分析[D];哈爾濱工業(yè)大學(xué);2009年

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本文編號(hào)：1570818