【摘要】：伴隨著經(jīng)濟(jì)的快速發(fā)展，我國(guó)的橋梁事業(yè)取得了突飛猛進(jìn)的發(fā)展。橋面鋪裝作為橋梁的重要組成部分，既是橋梁的受力層又是保護(hù)層，但在以往的橋梁建設(shè)和設(shè)計(jì)過程中，往往只是把橋面鋪裝列為附屬結(jié)構(gòu)，不做專門的計(jì)算力學(xué)分析，主要考慮路面設(shè)計(jì)和施工技術(shù)的要求。多年來，橋面鋪裝破壞的不斷出現(xiàn)開始引起了道路橋梁界專家與學(xué)者的重視與關(guān)注。 基于此，，本文通過建立三維橋面鋪裝結(jié)構(gòu)體系有限元模型，利用ANSYS結(jié)構(gòu)計(jì)算軟件計(jì)算分析了鋪裝結(jié)構(gòu)在荷載作用下鋪裝層的受力特性，期望能對(duì)橋面鋪裝結(jié)構(gòu)設(shè)計(jì)計(jì)算理論進(jìn)行一些有益的探索。 全文主要計(jì)算內(nèi)容分為了三個(gè)部分，第一部分是鋪裝結(jié)構(gòu)在靜力荷載作用下的受力特性分析，得出鋪裝層的豎向變形和主應(yīng)力的最大值是出現(xiàn)在橋面鋪裝層頂面，鋪裝層的剪應(yīng)力的最大值則是出現(xiàn)在上下鋪裝層間附近的位置，并且在此基礎(chǔ)上還考慮了超載和水平力對(duì)鋪裝層受力特性的影響；第二部分主要是計(jì)算分析設(shè)有防水層的鋪裝結(jié)構(gòu)在靜力荷載作用下鋪裝層的受力特性，并與沒有設(shè)防水層的鋪裝結(jié)構(gòu)進(jìn)行對(duì)比分析，得出有防水層的橋面鋪裝在豎向變形上要比沒有設(shè)防水層的時(shí)候大一點(diǎn)，但設(shè)有防水層的橋面鋪裝的剪應(yīng)力最大值在鋪裝上層和鋪裝下層的頂面位置要比沒有設(shè)防水層的小，其中對(duì)鋪裝上層頂面剪應(yīng)力的減小程度最大，隨后還考慮了防水層彈性模量和防水層厚度對(duì)鋪裝層受力特性的影響；第三部分是橋面鋪裝在移動(dòng)車荷載作用下的受力特性分析，得出橋面鋪裝在移動(dòng)荷載作用時(shí)的應(yīng)力和變形相比靜力荷載作用時(shí)要小，且鋪裝層的剪應(yīng)力的最大值出現(xiàn)在鋪裝下層的底面，最后考慮分析了車速、水平力和超載在動(dòng)力計(jì)算時(shí)對(duì)橋面鋪裝受力特性的影響。
[Abstract]:With the rapid development of economy, bridge undertaking in our country has made rapid progress. As an important part of bridge, deck pavement is both the stress layer and the protective layer of bridge, but in the past bridge construction and design process, deck pavement was often regarded as an accessory structure without special computational mechanics analysis. Pavement design and construction technology should be considered. Over the years, the continuous occurrence of bridge deck pavement damage has begun to attract the attention of road and bridge experts and scholars.
Based on this, this paper establishes the finite element model of three-dimensional bridge deck pavement structure system, calculates and analyzes the mechanical characteristics of the pavement structure under load by using ANSYS structural calculation software, expecting to carry on some beneficial exploration to the design and calculation theory of bridge deck pavement structure.
The main contents of this paper are divided into three parts. The first part is the analysis of the mechanical characteristics of the pavement structure under static load. It is concluded that the maximum vertical deformation and principal stress of the pavement appear on the top of the deck pavement, and the maximum shear stress of the pavement appears near the upper and lower pavement layers. On this basis, the influence of overload and horizontal force on the mechanical characteristics of the pavement is also considered; the second part mainly calculates and analyzes the mechanical characteristics of the pavement with waterproof layer under static load, and compares with the pavement without waterproof layer, and obtains the vertical deformation of the deck pavement with waterproof layer. The maximum shear stress of deck pavement with waterproof layer is smaller than that without waterproof layer. The shear stress on the top of deck pavement with waterproof layer is the lowest, and the elastic modulus of waterproof layer and the thickness of waterproof layer are also considered. The third part is the analysis of the mechanical characteristics of the bridge deck pavement under moving vehicle load. It is concluded that the stress and deformation of the bridge deck pavement under moving load is smaller than that under static load, and the maximum shear stress of the pavement appears at the bottom of the pavement. Finally, the vehicle speed and level are considered. The influence of force and overload on the mechanical characteristics of bridge deck pavement during dynamic calculation.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U443.33

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 胡曉;蘇凱;胡小弟;孫立軍;;水泥混凝土橋橋面瀝青鋪裝層的有限元分析[J];公路交通科技;2007年03期

2 許濤;黃曉明;高雪池;;移動(dòng)荷載作用下瀝青混凝土橋面鋪裝層動(dòng)力響應(yīng)分析[J];公路交通科技;2007年10期

3 羅立峰,鐘鳴,黃成造;混凝土橋面鋪裝概述[J];國(guó)外公路;1999年03期

4 裴建中,胡長(zhǎng)順,張占軍;橋面防水材料路用性能[J];交通運(yùn)輸工程學(xué)報(bào);2001年04期

5 童申家;夏慧媛;代岱;;ANSYS有限元模型的橋面鋪裝應(yīng)力分析[J];交通科技與經(jīng)濟(jì);2011年03期

6 張占軍,胡長(zhǎng)順;設(shè)防水層的混凝土橋橋面鋪裝結(jié)構(gòu)剪應(yīng)力計(jì)算與分析[J];西安公路交通大學(xué)學(xué)報(bào);2001年02期

7 李皓玉;楊紹普;李韶華;;車、路的相互作用下瀝青路面動(dòng)力學(xué)特性分析[J];振動(dòng)與沖擊;2009年04期

8 張占軍,胡長(zhǎng)順,王秉綱;水泥混凝土橋面瀝青混凝土鋪裝結(jié)構(gòu)設(shè)計(jì)方法研究[J];中國(guó)公路學(xué)報(bào);2001年01期

相關(guān)博士學(xué)位論文 前1條

1 曾蔚;同步碎石橋面鋪裝粘結(jié)層層間應(yīng)力分析與應(yīng)用研究[D];長(zhǎng)安大學(xué);2008年

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