發(fā)布時(shí)間：2018-03-26 16:18

  本文選題：界面形態(tài)　切入點(diǎn)：三維成像技術(shù)　出處：《重慶交通大學(xué)》2014年碩士論文

【摘要】：目前，半剛性基層瀝青混凝土路面已經(jīng)成為我國(guó)公路建設(shè)中最為常用的一種道路形式，與其他的公路形式相對(duì)比，它有著多方面的顯著優(yōu)點(diǎn)。然而，隨著我國(guó)公路建設(shè)的蓬勃發(fā)展，對(duì)半剛性基層瀝青混凝土路面各種病害的防治與處置的要求也日益增加，基層與面層界面間的連接方式也被越來(lái)越多的重視了起來(lái)。本文將三維成像原理與幾何分形維數(shù)的概念相結(jié)合，通過(guò)利用半剛性基層頂部二維圖像的三維還原效果對(duì)界面分形維數(shù)進(jìn)行計(jì)算，并綜合半剛性基層瀝青混凝土路面的路用性能進(jìn)行界面影響因素的判斷。研究表明，在實(shí)驗(yàn)室級(jí)配范圍內(nèi)，半剛性基層瀝青混凝土路面界面的分形維數(shù)分別與道路的車(chē)轍變形能力和水穩(wěn)定性呈二維曲線(xiàn)的線(xiàn)性關(guān)系；與道路的疲勞強(qiáng)度呈一維直線(xiàn)的線(xiàn)性關(guān)系。 論文從半剛性基層瀝青混凝土路面界面間的連接形式入手，采用三維成像技術(shù)理論在MATLAB軟件中的應(yīng)用對(duì)半剛性基層的頂部形態(tài)進(jìn)行還原，綜合非Herz彈性接觸模型理論和古德曼模型理論兩種界面間連接方式的評(píng)價(jià)方法，通過(guò)對(duì)半剛性基層瀝青混凝土路面界面的連接形態(tài)進(jìn)行分析，統(tǒng)計(jì)分析了影響基層表面三維形態(tài)的因素。利用半剛性基層頂部的分形維數(shù)作為界面間形態(tài)的代表值，分別計(jì)算不同級(jí)配條件下半剛性基層頂部分形維數(shù)以及半剛性基層瀝青混凝土路面的路用性能，將不同的維數(shù)與的對(duì)應(yīng)的路用性能指標(biāo)進(jìn)行處理，整合對(duì)比后得到分形維數(shù)與車(chē)轍變形、水穩(wěn)定性和力學(xué)強(qiáng)度之間的線(xiàn)形關(guān)系。之后提出界面病害的檢測(cè)方法，在諸多的檢測(cè)方法中尋求對(duì)道路無(wú)損害、檢測(cè)效率高、準(zhǔn)確性高、安全性好的檢測(cè)方法。對(duì)道路內(nèi)部構(gòu)造的地質(zhì)雷達(dá)檢測(cè)法和超聲波檢驗(yàn)法兩種無(wú)損檢測(cè)方法分別進(jìn)行論述，強(qiáng)調(diào)其檢測(cè)的無(wú)損性、高效性、準(zhǔn)確性等優(yōu)點(diǎn)，并對(duì)其進(jìn)一步的發(fā)展前景進(jìn)行了展望。最后，，綜合利用前面形態(tài)分形維數(shù)與路用性能關(guān)系的比較結(jié)果，進(jìn)一步分析幾種不同的改善界面完全連續(xù)形態(tài)的方式。對(duì)目前常用的增加界面間連接層方式的優(yōu)缺點(diǎn)進(jìn)行比對(duì)，并提出通過(guò)混合料配合比的改善以及施工環(huán)境、施工技術(shù)的改善從而達(dá)到界面間完全連續(xù)狀態(tài)的進(jìn)一步提升，在減小外在環(huán)境引起的影響下提高內(nèi)在的施工技術(shù)，從而達(dá)到半剛性基層瀝青混凝土界面間連接方式的改善的目的。 論文得到了交通土建工程材料國(guó)家地方聯(lián)合工程實(shí)驗(yàn)室開(kāi)放基金項(xiàng)目“瀝青路面結(jié)構(gòu)層層間界面形態(tài)和細(xì)觀(guān)力學(xué)行為與路面疲勞損傷關(guān)系研究”的資助。
[Abstract]:At present, asphalt concrete pavement with semi-rigid base has become one of the most commonly used road forms in highway construction in our country. Compared with other highway forms, it has many remarkable advantages. With the vigorous development of highway construction in China, the demand for prevention and treatment of various diseases of semi-rigid base asphalt concrete pavement is increasing day by day. More and more attention has been paid to the connection between the interface between the base and the surface. In this paper, the principle of 3D imaging is combined with the concept of geometric fractal dimension. The fractal dimension of the interface is calculated by using the 3D restoration effect of the 2D image of the top of the semi-rigid base, and the influence factors of the interface are judged by synthesizing the pavement performance of the semi-rigid base asphalt concrete pavement. In the range of laboratory grading, the fractal dimension of interface of semi-rigid base asphalt concrete pavement is linear with the rutting deformation ability and water stability of road, and with the fatigue strength of road. This paper starts with the connection form between the interface of semi-rigid base asphalt concrete pavement, adopts the theory of three-dimensional imaging technology in the application of MATLAB software to restore the top shape of semi-rigid base course. Based on the evaluation methods of non-#en0# elastic contact model theory and Goodman model theory, the interface form of semi-rigid base asphalt concrete pavement is analyzed. The factors influencing the 3D shape of the base surface are analyzed statistically. The fractal dimension of the top of the semi-rigid base is used as the representative value of the interfacial morphology. The fractal dimension of semi-rigid base top and the pavement performance of semi-rigid base asphalt concrete pavement are calculated respectively under different gradation conditions, and the corresponding road performance indexes of different dimensions are treated. The linear relationship between fractal dimension and rut deformation, water stability and mechanical strength is obtained. Two kinds of nondestructive testing methods, such as ground penetrating radar detection method and ultrasonic testing method, are discussed respectively, and the advantages of nondestructive testing, high efficiency, accuracy and so on are emphasized. The prospect of further development is forecasted. Finally, the comparison results between the fractal dimension of the former morphology and the performance of the road are synthetically used. This paper further analyzes several different ways to improve the complete continuous shape of the interface, compares the advantages and disadvantages of the commonly used ways to increase the interfacial connection layer, and puts forward that through the improvement of the mixture mix ratio and the construction environment, The improvement of construction technology leads to the further improvement of the complete continuous state of the interface, and the improvement of the internal construction technology while reducing the influence caused by the external environment, In order to achieve the semi-rigid base asphalt concrete interface connection between the purpose of improvement. In this paper, the open fund project of national local joint engineering laboratory of traffic civil engineering materials "study on the relationship between the interfacial morphology and meso-mechanical behavior of asphalt pavement structure and pavement fatigue damage" is obtained.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：U416.21

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