本文選題：傳荷指標(biāo)　切入點(diǎn)：板底脫空　出處：《中國(guó)民航大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：我國(guó)機(jī)場(chǎng)水泥混凝土道面在使用后普遍較早地出現(xiàn)了沉陷、錯(cuò)臺(tái)等損傷,其中由接縫引起的損害約占70%。傳力桿的設(shè)置在一定程度上改善了道面結(jié)構(gòu)的整體性、提高了傳荷性能,但隨著飛機(jī)荷載作用次數(shù)的增加,傳力桿會(huì)與混凝土粘結(jié)界面產(chǎn)生一定的松動(dòng),引起接縫傳荷能力的衰減。同時(shí),當(dāng)板底出現(xiàn)不同程度的脫空時(shí),也會(huì)引起接縫傳荷能力減少,導(dǎo)致混凝土道面結(jié)構(gòu)性能下降,使用壽命降低。因此,接縫設(shè)計(jì)是機(jī)場(chǎng)水泥混凝土道面工程的關(guān)鍵技術(shù)之一。在我國(guó)現(xiàn)行規(guī)范中,接縫傳力桿的設(shè)計(jì)僅與板厚有關(guān),然而,研究表明板的接縫傳荷體系受多種因素影響,如基層與面層的層間黏結(jié)性能、土基強(qiáng)度、飛機(jī)荷載與結(jié)構(gòu)損傷等。目前,相關(guān)方面的文獻(xiàn)較少,而且大多僅局限于定性方面的研究,未涉及多因素綜合影響下有效提高接縫傳荷能力的具體實(shí)用的設(shè)計(jì)方法。為此,本文采用考慮接觸的三維有限元模型和室內(nèi)試驗(yàn),分析道面結(jié)構(gòu)的受力特點(diǎn)以及接縫傳荷性能,最終建立考慮多種因素的接縫傳力桿設(shè)計(jì)方法,具體研究?jī)?nèi)容如下:首先,采用ABAQUS有限元軟件建立考慮道面混凝土與傳力桿、混凝土面層與基層等各實(shí)體層間粘結(jié)性能的機(jī)場(chǎng)水泥混凝土道面三維有限元模型,研究不同軸載、起落架構(gòu)型、土基模量、面層與基層接觸屬性、道面板參數(shù)、傳力桿參數(shù)等多因素對(duì)傳荷指標(biāo)以及桿與混凝土界面應(yīng)力的影響規(guī)律。進(jìn)一步,分析考慮板底脫空和傳力桿松動(dòng)時(shí),道面力學(xué)性能和接縫傳荷性能的變化規(guī)律,并給出了傳力桿直徑和間距設(shè)計(jì)的合理建議范圍。然后,基于相似理論和圣維南原理,設(shè)計(jì)接縫設(shè)傳力桿的水泥混凝土道面結(jié)構(gòu)模型,研究在正常工況以及存在脫空和松動(dòng)時(shí)的位移傳荷效率、傳力桿和接縫界面混凝土的力學(xué)特性。最后,基于正交試驗(yàn)設(shè)計(jì)理論對(duì)影響各傳荷指標(biāo)的多因素進(jìn)行敏感性分析,建立主要影響因子與傳荷指標(biāo)的定量關(guān)系。進(jìn)而基于布拉德伯利傳力桿驗(yàn)算公式,運(yùn)用MATLAB編輯程序建立水泥混凝土道面板傳力桿設(shè)計(jì)系統(tǒng)。上述研究有助于系統(tǒng)地了解傳力桿的傳荷機(jī)理、道面接縫的應(yīng)力特性及分布,可為道面板及傳力桿的設(shè)計(jì)和施工提供一定參考依據(jù)。
[Abstract]:The cement concrete pavement of airport in our country generally appeared early subsidence, staggered platform and other damage, in which the damage caused by joints accounted for about 70%. The installation of force transfer rod improved the integrity of the pavement structure and the load transfer performance to some extent. However, with the increase of aircraft load, the bond interface between the load transfer rod and the concrete will be loosened to a certain extent, which will lead to the attenuation of the load transfer capacity of the joint. At the same time, the load transfer capacity of the joint will also be reduced when the slab bottom is emptied to different degrees. Therefore, joint design is one of the key technologies in airport cement concrete pavement engineering. In the current code of our country, the design of joint force transfer rod is only related to the thickness of slab. The research shows that the joint load transfer system of the plate is affected by many factors, such as the interlaminar bonding performance between the base layer and the surface layer, the strength of the soil foundation, the aircraft load and the structural damage, etc. And most of them are limited to qualitative research, and do not involve the practical design method which can effectively improve the capacity of joint load transfer under the influence of multiple factors. Therefore, a three-dimensional finite element model considering contact and laboratory tests are adopted in this paper. The stress characteristics of pavement structure and the load transfer performance of joint are analyzed. Finally, the design method of joint force transfer rod considering many factors is established. The specific research contents are as follows: firstly, the concrete and force transfer rod considering pavement concrete and force transfer rod are established by ABAQUS finite element software. The 3D finite element model of the bond behavior between the concrete surface and the base course is studied, and the different axial loads, landing gear configuration, soil modulus, contact properties between the surface and the base, the parameters of the pavement face, the parameters of the pavement are studied. The influence of load transfer parameters and other factors on the load transfer index and the interface stress between the bar and concrete is analyzed. Further, the variation law of the pavement mechanical properties and the joint load transfer performance is analyzed when the slab bottom is empty and the force transfer rod is loosened. Then, based on the similarity theory and the principle of Saint Venant, the cement concrete pavement structure model of the joint transmission bar is designed, which is based on the theory of similarity and the principle of Saint-Venant, and gives a reasonable range of suggestions for the design of the diameter and spacing of the force transfer rod. The displacement load transfer efficiency and mechanical properties of the force transfer rod and joint interface concrete under normal working conditions and in the presence of void removal and loosening are studied. Finally, based on the orthogonal test design theory, the sensitivity of various factors affecting the load transfer index is analyzed. The quantitative relationship between the main influencing factors and the load transfer index is established, and then based on the Bradbury force bar checking formula, In this paper, the design system of cement concrete track face slab force-transfer rod is established by using MATLAB editing program. The above research is helpful to understand systematically the mechanism of load transfer, stress characteristics and distribution of pavement joints. It can provide a certain reference for the design and construction of road face panel and force transfer bar.
【學(xué)位授予單位】：中國(guó)民航大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U416.216;V351.11

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 黃霖;方型傳力桿在水泥混凝土路面施工中的應(yīng)用[J];中國(guó)西部科技;2004年11期

2 李鼎偉;方形傳力桿在水泥混凝土路面施工中的應(yīng)用[J];工程建設(shè)與設(shè)計(jì);2005年01期

3 蔣應(yīng)軍;戴經(jīng)梁;;傳力桿與混凝土界面的接觸應(yīng)力[J];中國(guó)公路學(xué)報(bào);2007年02期

4 張宇;;廣東梅龍高速施工采用傳力桿插入設(shè)備技術(shù)[J];筑路機(jī)械與施工機(jī)械化;2007年03期

5 梅迎軍;付智;趙尚傳;;傳力桿環(huán)氧涂層對(duì)使用壽命影響的分析[J];公路;2008年11期

6 蔡佳駿;;特重荷載作用下碼頭重型鋪面接縫傳力桿設(shè)計(jì)[J];水運(yùn)工程;2008年08期

7 潘艷珠;譚寶龍;胡遲春;;水泥混凝土路面?zhèn)髁U間距設(shè)計(jì)的力學(xué)分析[J];廣東交通職業(yè)技術(shù)學(xué)院學(xué)報(bào);2009年02期

8 彭鵬;田波;牛開民;;水平安裝誤差時(shí)傳力桿工作性能研究[J];公路交通科技;2011年06期

9 陳波;;基于有限元的水泥混凝土路面裂縫加裝傳力桿維修分析[J];南方金屬;2011年04期

10 周乾;;對(duì)剛性路面?zhèn)髁U合理設(shè)計(jì)方法的探討[J];山西建筑;2013年17期

相關(guān)會(huì)議論文 前2條

1 付厚利;申明亮;邵偉;;隧道路面基層混凝土縮縫中傳力桿的力學(xué)分析[A];礦山建設(shè)工程新進(jìn)展——2007全國(guó)礦山建設(shè)學(xué)術(shù)會(huì)議文集[C];2007年

2 王洪國(guó);湯洪濤;;鋼筋植入機(jī)的設(shè)計(jì)原理及應(yīng)用[A];公路交通與建設(shè)論壇（2011）[C];2003年

相關(guān)重要報(bào)紙文章 前3條

1 本報(bào)記者 王建喜　通訊員 王永斌;傳力桿將以復(fù)合材料代替鋼筋[N];韶關(guān)日?qǐng)?bào);2009年

2 張國(guó)寧;水泥混凝土路面施工工藝[N];廣東建設(shè)報(bào);2002年

3 劉志廣;砼路面滑模施工中新材料、新技術(shù)的應(yīng)用[N];中華建筑報(bào);2007年

相關(guān)博士學(xué)位論文 前1條

1 張望喜;混凝土地基板靜、動(dòng)力特性試驗(yàn)與研究[D];湖南大學(xué);2002年

相關(guān)碩士學(xué)位論文 前10條

1 崔超;多對(duì)傳力桿空間RCCR機(jī)構(gòu)約束反力分析[D];鄭州大學(xué);2015年

2 歐陽(yáng)凱;過約束空間RCCR機(jī)構(gòu)受力分析[D];鄭州大學(xué);2015年

3 劉勇;水泥混凝土路面GFRP傳力桿的研究[D];華南理工大學(xué);2016年

4 楊莉;水泥混凝土路面接縫傳力桿工作性能研究[D];南京理工大學(xué);2016年

5 鐘凱;水泥混凝土路面接縫拉桿及傳力桿粘結(jié)滑移性能研究[D];廣西大學(xué);2016年

6 高玉換;基于機(jī)場(chǎng)水泥混凝土道面板傳荷性能的傳力桿設(shè)計(jì)研究[D];中國(guó)民航大學(xué);2015年

7 張懷志;普通水泥路面?zhèn)髁U及拉桿研究[D];哈爾濱工業(yè)大學(xué);2007年

8 蔡海斌;傳力桿偏位對(duì)水泥混凝土路面的影響分析[D];哈爾濱工業(yè)大學(xué);2009年

9 杜文杰;長(zhǎng)益高速公路路面養(yǎng)護(hù)管理技術(shù)的開發(fā)與應(yīng)用[D];長(zhǎng)沙理工大學(xué);2007年

10 曹云龍;韶關(guān)市公路網(wǎng)水泥混凝土路面保護(hù)策略研究[D];華南理工大學(xué);2011年

，

本文編號(hào)：1635193