本文關(guān)鍵詞：長(zhǎng)壽命瀝青路面疲勞模型及設(shè)計(jì)指標(biāo)分析　出處：《哈爾濱工業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 長(zhǎng)壽命瀝青路面 疲勞模型 動(dòng)態(tài)響應(yīng) 疲勞設(shè)計(jì)指標(biāo)

【摘要】：隨著道路交通的快速發(fā)展,我國(guó)高速公路瀝青路面的早期損壞想象頻繁發(fā)生,大大增加了高速公路的維修養(yǎng)護(hù)費(fèi)用,加大了經(jīng)濟(jì)社會(huì)壓力。在這一背景下,長(zhǎng)壽命瀝青路面越來(lái)越多的受到人們的關(guān)注,其全壽命周期成本最低的理念也契合了經(jīng)濟(jì)社會(huì)可持續(xù)發(fā)展的思想。長(zhǎng)壽命瀝青路面是國(guó)際道路工程界提出的一種新技術(shù)。它以全壽命周期成本最低的理念為出發(fā)點(diǎn),最大的特點(diǎn)是在整個(gè)使用壽命周期內(nèi),不產(chǎn)生結(jié)構(gòu)性的破壞,只需在一定的周期內(nèi)進(jìn)行養(yǎng)護(hù)即可保持較高的使用性能。依托于遼寧省交通科學(xué)研究院“重載交通長(zhǎng)壽命瀝青路面結(jié)構(gòu)應(yīng)用技術(shù)研究”科研項(xiàng)目,對(duì)遼寧省典型長(zhǎng)壽命瀝青路面結(jié)構(gòu)的疲勞模型及疲勞設(shè)計(jì)指標(biāo)的取值進(jìn)行分析研究,旨在通過(guò)分析計(jì)算,提出一個(gè)基于實(shí)測(cè)數(shù)據(jù)的長(zhǎng)壽命瀝青路面疲勞設(shè)計(jì)控制指標(biāo)的建議值,為長(zhǎng)壽命瀝青路面在我國(guó)的應(yīng)用奠定基礎(chǔ)。首先,利用已有的疲勞試驗(yàn)數(shù)據(jù),擬合典型長(zhǎng)壽命瀝青路面結(jié)構(gòu)中瀝青層和基層材料的疲勞模型。然后進(jìn)行動(dòng)態(tài)力學(xué)響應(yīng)有限元計(jì)算,得到長(zhǎng)壽命瀝青路面各結(jié)構(gòu)層內(nèi)的應(yīng)變響應(yīng),并利用加速加載實(shí)測(cè)應(yīng)變數(shù)據(jù)進(jìn)行檢驗(yàn)分析。最后將計(jì)算得到的應(yīng)變響應(yīng)代入已有疲勞模型,計(jì)算各結(jié)構(gòu)層的疲勞壽命。根據(jù)現(xiàn)行規(guī)范中的交通分級(jí),將各級(jí)臨界交通量代入疲勞模型,反推出各交通等級(jí)下長(zhǎng)壽命瀝青路面疲勞設(shè)計(jì)指標(biāo)——瀝青層層底拉應(yīng)變的取值上限。通過(guò)計(jì)算分析發(fā)現(xiàn),路面結(jié)構(gòu)內(nèi)下面層的疲勞壽命最低,控制下面層內(nèi)水平拉應(yīng)變值,是控制整個(gè)路面結(jié)構(gòu)疲勞壽命的關(guān)鍵。對(duì)于規(guī)范中的輕交通等級(jí),建議疲勞設(shè)計(jì)指標(biāo)控制值為143με;對(duì)于中交通和重交通等級(jí),建議疲勞設(shè)計(jì)指標(biāo)值控制值分別為105με和89με;對(duì)于累積軸載達(dá)到1億次的特重交通等級(jí),建議疲勞設(shè)計(jì)指標(biāo)控制值為65με。
[Abstract]:With the rapid development of road traffic, the early damage imagination of highway asphalt pavement occurs frequently in our country, which greatly increases the maintenance cost of expressway, and increases the economic and social pressure. People pay more and more attention to long-life asphalt pavement. The concept of the lowest cost of the whole life cycle also accords with the idea of sustainable economic and social development. The long-life asphalt pavement is a new technology put forward by the international road engineering community. It takes the idea of the lowest cost of the whole life cycle as the concept of "the lowest cost of the whole life cycle". Send it out. The biggest feature is that no structural damage occurs throughout the life cycle. It is necessary to maintain high performance only in a certain period. It is based on the scientific research project of "heavy duty traffic long life asphalt pavement structure application technology research" of Liaoning Provincial Transportation Science Research Institute. The fatigue model of typical long-life asphalt pavement in Liaoning Province and the value of fatigue design index are analyzed and studied in order to analyze and calculate. This paper puts forward a suggested value of fatigue design control index of long-life asphalt pavement based on the measured data, which lays a foundation for the application of long-life asphalt pavement in China. Firstly, the existing fatigue test data are used. The fatigue model of asphalt layer and base material in typical long-life asphalt pavement structure is fitted. Then the finite element calculation of dynamic mechanical response is carried out to obtain the strain response in each structure layer of long-life asphalt pavement. Finally, the strain response is added to the existing fatigue model, and the fatigue life of each structure layer is calculated. According to the traffic classification in the current code, the fatigue life of each structure layer is calculated. The critical traffic volume of all levels is replaced by fatigue model, and the upper limit of the fatigue design index of long-life asphalt pavement under each traffic grade, which is the tensile strain of asphalt layer bottom, is deduced, which is found by calculation and analysis. The fatigue life of the lower layer of the pavement structure is the lowest. The key to control the fatigue life of the whole pavement structure is to control the horizontal tensile strain value of the lower layer. It is suggested that the control value of fatigue design index is 143 渭 蔚; For medium and heavy traffic grade, it is suggested that the control values of fatigue design index are 105 渭 蔚 and 89 渭 蔚 respectively. For the extra heavy traffic grade with accumulated axle load of 100 million times, it is suggested that the control value of fatigue design index is 65 渭 蔚.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U416.217

【參考文獻(xiàn)】

相關(guān)期刊論文 前9條

1 凌天清;賴輝;韋剛;鄭智能;高建;;剛性基層長(zhǎng)壽命瀝青路面抗反射裂縫力學(xué)分析[J];重慶交通大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年05期

2 任海峰;雷崇國(guó);臺(tái)電倉(cāng);;半剛性基層長(zhǎng)壽命瀝青路面結(jié)構(gòu)設(shè)計(jì)指標(biāo)研究[J];公路交通科技(應(yīng)用技術(shù)版);2011年01期

3 張志祥;陳榮生;白琦峰;;LSM瀝青混合料疲勞極限的試驗(yàn)研究[J];公路交通科技;2006年04期

4 韋金城;王林;楊永順;馬士杰;;永久性瀝青路面試驗(yàn)路力學(xué)響應(yīng)分布的數(shù)值仿真[J];公路交通科技;2010年06期

5 崔鵬;邵敏華;孫立軍;;長(zhǎng)壽命瀝青路面設(shè)計(jì)指標(biāo)研究[J];交通運(yùn)輸工程學(xué)報(bào);2008年03期

6 銀力;鄭奕丹;;長(zhǎng)壽命瀝青路面設(shè)計(jì)中動(dòng)態(tài)體系指標(biāo)探討[J];交通標(biāo)準(zhǔn)化;2012年21期

7 董澤蛟;譚憶秋;歐進(jìn)萍;;三向非均布移動(dòng)荷載作用下瀝青路面動(dòng)力響應(yīng)分析[J];土木工程學(xué)報(bào);2013年06期

8 許薛軍;劉華林;;高速、重載交通條件下提高瀝青路面疲勞性能的技術(shù)措施[J];公路工程;2010年04期

9 蔣建國(guó);馬國(guó)存;梁洪濤;;隨機(jī)動(dòng)載作用下瀝青路面的動(dòng)力響應(yīng)分析[J];湘潭大學(xué)自然科學(xué)學(xué)報(bào);2010年04期

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