輪載作用下高寒地區(qū)瀝青路面結(jié)構(gòu)力學(xué)響應(yīng)及損傷分析
[Abstract]:Alpine region is widely distributed in our country. It has the climatic characteristics of high altitude, low temperature, big temperature difference, many sunshine, strong radiation, bad natural conditions, and the asphalt pavement in the alpine area, which has already been built and put into operation, is seriously damaged. The reasonable choice of asphalt pavement structure combination design in cold area is very important. The analysis of the mechanical response of asphalt pavement structure in alpine area is still incomplete, and the nonlinearity of granular material and soil foundation is not considered, nor is it fully combined with the environment, so the damage analysis of fatigue cracking and permanent deformation under wheel loading is carried out by climatic characteristics. In this paper, based on the comprehensive investigation at home and abroad, the nonlinear finite element method and the theory of elastic layered system are used. The main works are as follows: (1) the mechanical analysis module of axisymmetric nonlinear finite element software MichPave (MFPDS, which plays an important role in the development of asphalt pavement structure analysis, is introduced, including its constitutive model. Self-gravity stress and lateral stress, boundary condition, mesh division, stress correction and convergence criterion, equivalent resilience modulus of nonlinear layer, fatigue life and rutting depth prediction, etc. It lays a foundation for further analysis of mechanical response of asphalt pavement in alpine area. (2) the flexible pavement analysis module of elastic layered system software KENLAYER (KENPAVE, which plays an important role in the development of asphalt pavement structure analysis, is introduced, including the superposition of multi-wheel loads and viscoelastic analysis. The nonlinear analysis and damage analysis lay a foundation for the subsequent analysis of asphalt pavement structure damage in alpine area. (3) based on four typical asphalt pavement structures in high and cold region, including semi-rigid, sandwich, full thickness and inverted type, the nonlinearity of graded crushed stone and four kinds of structure soil foundation are considered. The axisymmetric nonlinear finite element model is established by using MFPDS software. The displacement, stress, strain and other mechanical responses of the four structures under load are analyzed, and the road performance is compared. (4) considering the viscoelasticity of asphalt surface, the nonlinearity of graded macadam and soil foundation and the mobility of wheel load, a semi-rigid, sandwich and full thickness formula based on the theory of elastic layered system is established by using KENPAVE software. Based on the two damage modes of fatigue cracking and permanent deformation, the damage analysis of a load group is carried out in four periods of spring, summer, autumn and winter, and the pavement temperature is discussed. The influence of spring melting of soil foundation on the damage law, the damage mode and damage degree of pavement control are defined, and the damage laws of four structures are compared horizontally. (5) synthesizing the results of mechanical response and damage analysis, the adaptability of typical asphalt pavement structure in alpine area is evaluated, and the relevant suggestions for the suitable combination design of asphalt pavement structure in alpine area are put forward.
【學(xué)位授予單位】:西南交通大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類(lèi)號(hào)】:U416.217
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 艾長(zhǎng)發(fā);黃大強(qiáng);高曉偉;邱延峻;;高寒地區(qū)瀝青路面溫度行為數(shù)值分析[J];重慶交通大學(xué)學(xué)報(bào)(自然科學(xué)版);2017年02期
2 劉義高;呂松濤;;高寒低等級(jí)公路瀝青面層結(jié)構(gòu)影響分析[J];武漢理工大學(xué)學(xué)報(bào)(交通科學(xué)與工程版);2016年01期
3 張春成;;高原高寒地區(qū)瀝青路面裂縫原因與對(duì)策[J];國(guó)防交通工程與技術(shù);2015年S1期
4 陶志剛;;高寒地區(qū)瀝青路面病害模式及處治對(duì)策研究[J];內(nèi)蒙古公路與運(yùn)輸;2014年04期
5 朱磊;李強(qiáng);陳寧;;高原寒冷氣候?qū)r青路面病害模式的影響分析及處治對(duì)策研究[J];湖南交通科技;2014年01期
6 周亮;凌建明;林小平;;考慮環(huán)境因素的瀝青路面疲勞開(kāi)裂預(yù)估模型[J];中國(guó)公路學(xué)報(bào);2013年06期
7 杜興無(wú);黃晚清;曹明明;;川西高寒地區(qū)熱壓式瀝青混合料路用性能研究[J];西南公路;2013年03期
8 石桂梅;;復(fù)合式基層瀝青路面級(jí)配碎石上基層的抗剪性能[J];建筑材料學(xué)報(bào);2011年04期
9 黃俊文;馬濤;楊長(zhǎng)衛(wèi);周新文;;交通荷載作用下風(fēng)積沙路基動(dòng)力響應(yīng)分析[J];鐵道建筑;2010年10期
10 凌建明;蘇華才;謝華昌;官盛飛;;路基土動(dòng)態(tài)回彈模量的試驗(yàn)研究[J];地下空間與工程學(xué)報(bào);2010年05期
相關(guān)博士學(xué)位論文 前6條
1 金光來(lái);基于擴(kuò)展有限元的瀝青路面疲勞開(kāi)裂行為的數(shù)值研究[D];東南大學(xué);2015年
2 王保良;車(chē)輛荷載作用下瀝青路面疲勞行為研究[D];長(zhǎng)安大學(xué);2008年
3 艾長(zhǎng)發(fā);高寒地區(qū)瀝青路面行為特性與設(shè)計(jì)方法研究[D];西南交通大學(xué);2008年
4 關(guān)宏信;瀝青混合料粘彈性疲勞損傷模型研究[D];中南大學(xué);2005年
5 李靜;瀝青混合料路用性能預(yù)測(cè)模型的研究[D];長(zhǎng)安大學(xué);2004年
6 周志剛;交通荷載下瀝青類(lèi)路面疲勞損傷開(kāi)裂研究[D];中南大學(xué);2003年
相關(guān)碩士學(xué)位論文 前10條
1 董旭鵬;基于材料非線性的多軸重載下瀝青路面結(jié)構(gòu)響應(yīng)分析[D];東南大學(xué);2015年
2 孫夢(mèng)青;瀝青路面結(jié)構(gòu)性能預(yù)測(cè)研究[D];長(zhǎng)安大學(xué);2013年
3 王健;基于影響因素非線性特性的瀝青路面永久變形預(yù)估研究[D];長(zhǎng)安大學(xué);2011年
4 李洪蛟;青藏公路路基路面不均勻變形分析與處治研究[D];長(zhǎng)安大學(xué);2011年
5 嚴(yán)恒;瀝青混合料疲勞—蠕變交互作用損傷模型研究[D];重慶交通大學(xué);2011年
6 付元坤;瀝青路面車(chē)轍預(yù)估模型的研究[D];長(zhǎng)安大學(xué);2009年
7 陳炯;高寒地區(qū)公路瀝青混合料配合比優(yōu)化設(shè)計(jì)[D];西南交通大學(xué);2007年
8 黃菲;瀝青路面永久變形數(shù)值模擬及車(chē)轍預(yù)估[D];東南大學(xué);2006年
9 周勇;高寒地區(qū)道路瀝青低溫性能評(píng)價(jià)指標(biāo)繼光老化特性研究[D];長(zhǎng)安大學(xué);2005年
10 敖洪濤;基于承載板試驗(yàn)的路面柔性材料非線性參數(shù)反算[D];長(zhǎng)沙理工大學(xué);2004年
,本文編號(hào):2396250
本文鏈接:http://sikaile.net/kejilunwen/daoluqiaoliang/2396250.html