本文選題：瀝青路面　切入點(diǎn)：層間接觸　出處：《重慶交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著交通建設(shè)的迅速發(fā)展，瀝青路面已成為我國(guó)高等級(jí)公路的主要路面形式�，F(xiàn)行瀝青路面設(shè)計(jì)規(guī)范中，以假設(shè)路面結(jié)構(gòu)為多層彈性連續(xù)體系為前提進(jìn)行結(jié)構(gòu)設(shè)計(jì)。實(shí)際上瀝青路面結(jié)構(gòu)層之間并非完全連續(xù)狀態(tài)，而是處于一種摩擦接觸狀態(tài)。層間接觸狀態(tài)的好壞對(duì)瀝青路面結(jié)構(gòu)力學(xué)影響較大，直接關(guān)系到路面的使用性能，有必要對(duì)瀝青路面層間接觸狀態(tài)展開研究。 瀝青路面基層和面層材料差異較大，基-面層間接觸問(wèn)題更加特別，因此本文主要研究基-面層間接觸問(wèn)題。以水泥穩(wěn)定碎石瀝青路面結(jié)構(gòu)為研究對(duì)象，具體研究?jī)?nèi)容如下： 第一，借助BISAR軟件對(duì)半剛性基層瀝青路面基-面層間力學(xué)強(qiáng)度進(jìn)行分析，研究基層和面層材料對(duì)基-面層間受力的影響。得到了基-面層間剪應(yīng)力、正應(yīng)力與基層模量、基層厚度、面層模量、面層厚度、垂直荷載、水平荷載之間的變化規(guī)律。 第二，采用自制夾具，以電子萬(wàn)能實(shí)驗(yàn)機(jī)為平臺(tái)，對(duì)試件進(jìn)行基-面層間抗剪試驗(yàn)，探究試驗(yàn)條件變化與基-面層間抗剪強(qiáng)度之間的關(guān)系，建立了基-面層間溫度-加載速率-抗剪強(qiáng)度的相關(guān)關(guān)系，，發(fā)現(xiàn)溫度和加載速率都會(huì)對(duì)層間抗剪強(qiáng)度產(chǎn)生明顯影響，并且溫度影響更為顯著。 第三，通過(guò)高溫車轍和浸水車轍試驗(yàn)，利用正交試驗(yàn)方法，分析了基層強(qiáng)度、下封層類型、透層油的撒布量對(duì)路面結(jié)構(gòu)車轍的影響，三者的影響程度是：基層強(qiáng)度＞下封層類型＞透層油的撒布量。 第四，利用ABAQUS有限元軟件建立三維路面模型，模擬計(jì)算了基-面層間摩擦接觸和連續(xù)接觸兩種狀態(tài)下的路面結(jié)構(gòu)力學(xué)響應(yīng)，得到了路表彎沉、橫向水平拉應(yīng)力、縱向水平拉應(yīng)力、豎向剪應(yīng)力、縱向剪應(yīng)力以及橫向剪應(yīng)力等力學(xué)指標(biāo)的變化規(guī)律，對(duì)分析路面破壞原因與基-面層間接觸狀態(tài)的關(guān)系提供了重要依據(jù)。 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)觀力學(xué)行為與路面疲勞損傷關(guān)系研究”的資助。
[Abstract]:With the rapid development of traffic construction, asphalt pavement has become the main form of pavement of high grade highway in China. The current design specification of asphalt pavement, the pavement structure is based on the assumption that the multilayer elastic continuous system is the premise of structure design. In fact between the asphalt pavement layer is not completely continuous, but in a kind of friction contact state between layers. The contact condition is good or bad influence on asphalt pavement structure, is directly related to the pavement performance, it is necessary to study the contact state between the layers of the asphalt pavement.
The difference between base and surface materials of asphalt pavement is quite different. The contact problem between base and surface is more special. Therefore, this paper mainly studies the problem of base plane contact. Taking cement stabilized macadam asphalt pavement structure as the research object, the specific research contents are as follows:
First, using BISAR to analyze the semi - rigid base asphalt pavement surface layer mechanical strength, research base and surface layer material on the base and surface layer stress effects. The base and surface shear stress, normal stress and modulus of base, base thickness, modulus of surface layer, surface layer the thickness, vertical load, horizontal load variation between.
Second, using the self-made fixture, with electronic universal testing machine as a platform, based on the specimen surface shear test, test conditions and research base and surface shear strength relationship between the established base and surface layer temperature and loading rate - correlation between shear strength, hair the temperature and loading rate on shear strength and influence, and the influence of temperature was more significant.
Third, through the high temperature rut and immersion rutting test, the influence of base strength, the type of bottom seal and the amount of penetration oil on Rutting of pavement structure is analyzed by orthogonal test method. The influence degree of the three is: the strength of the base layer, the type of the lower seal layer and the spreading amount of the penetrating oil.
Fourth, the establishment of 3D road model using ABAQUS finite element software, simulate the contact and continuous contact with the pavement structure mechanical response under two kinds of friction between base and surface courses, the road surface deflection, transverse tensile stress, longitudinal tensile stress, vertical shear stress, longitudinal shear stress variation the force and the transverse shear stress and mechanical indexes, provides an important basis for the analysis of relationship between pavement damage reason and foundation surface contact state between layers.
This paper is supported by the open foundation project of the National Civil Engineering Joint Engineering Laboratory of transportation civil engineering materials, "the relationship between the interface morphology and the meso mechanical behavior of asphalt pavement structure" and the relationship between pavement fatigue and damage.

【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
【分類號(hào)】：U416.217

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