本文關(guān)鍵詞： 水泥混凝土橋 橋面鋪裝 瀝青混凝土 力學(xué)分析　出處：《河北工業(yè)大學(xué)》2014年博士論文　論文類型：學(xué)位論文

【摘要】：橋梁作為公路交通運(yùn)輸網(wǎng)中重要的樞紐和節(jié)點(diǎn)，起到至關(guān)重要的作用。由于實(shí)際應(yīng)用中往往由于結(jié)構(gòu)組合形式、荷載、環(huán)境和振動(dòng)、大撓度變形等特殊使用條件，導(dǎo)致橋梁鋪裝結(jié)構(gòu)使用壽命往往遠(yuǎn)低于一般的路面結(jié)構(gòu)。 本文采用理論分析、室內(nèi)材料試驗(yàn)和實(shí)體工程驗(yàn)證的方法進(jìn)行研究，理論分析中，采用有限元通用分析軟件ANSYS，建立橋梁上部結(jié)構(gòu)與鋪裝系復(fù)合結(jié)構(gòu)分析模型，重點(diǎn)分析瀝青混凝土層厚度、層間黏結(jié)狀態(tài)對(duì)應(yīng)力、應(yīng)變分布狀態(tài)的影響，并以此為基礎(chǔ)提出橋面鋪裝結(jié)構(gòu)形式的依據(jù)。室內(nèi)材料試驗(yàn)中，通過(guò)提出新的級(jí)配設(shè)計(jì)和最佳配合比設(shè)計(jì)方法，實(shí)現(xiàn)按照橋面鋪裝使用功能進(jìn)行材料設(shè)計(jì)的目標(biāo)，針對(duì)橋面使用過(guò)程中典型損壞特征，重點(diǎn)進(jìn)行抗車轍能力，水損害能力和層間抗剪能力的評(píng)價(jià)。通過(guò)研發(fā)包含橋梁上部結(jié)構(gòu)與鋪裝系瀝青混凝土層復(fù)合結(jié)構(gòu)實(shí)體模型的動(dòng)態(tài)測(cè)試方法，結(jié)構(gòu)響應(yīng)的初步測(cè)試，并與有限元模型建立的理論結(jié)果進(jìn)行比較和修正。根據(jù)水泥混凝土橋、瀝青鋪裝層結(jié)構(gòu)和材料特點(diǎn)，制定對(duì)應(yīng)的施工工藝。并通過(guò)實(shí)體工程驗(yàn)證各項(xiàng)工藝措施的合理性和有效性，完善橋面鋪裝施工技術(shù)方法。 最終，提出了基于功能需求的水泥混凝土橋面倒裝式瀝青混凝土鋪裝結(jié)構(gòu)，骨架 嵌擠型級(jí)配的構(gòu)成和設(shè)計(jì)方法，基于最緊密嵌擠狀態(tài)的瀝青混合料最佳油石比確定方法，，并且建立了橋面鋪裝系單元足尺結(jié)構(gòu)試驗(yàn)平臺(tái)，提出了基于單元足尺橋面結(jié)構(gòu)模型的橋面鋪裝系力學(xué)響應(yīng)試驗(yàn)測(cè)試方法。
[Abstract]:Bridge, as an important hub and node in highway transportation network, plays an important role. In practical application, it is often due to special application conditions such as structure combination form, load, environment and vibration, large deflection deformation, etc. As a result, the service life of bridge pavement structure is much lower than that of normal pavement structure. In this paper, the methods of theoretical analysis, indoor material test and solid engineering verification are adopted. In the theoretical analysis, the composite structure analysis model of bridge superstructure and paving system is established by using the finite element general analysis software ANSYS. The influence of asphalt concrete layer thickness and interlayer bonding state on stress and strain distribution is analyzed, and the basis of bridge deck pavement structure is put forward. A new method of grading design and optimum proportion design is put forward to achieve the purpose of material design according to the function of bridge deck pavement. Aiming at the typical damage characteristics of bridge deck during the use of the bridge deck, the anti-rutting ability is emphasized. Evaluation of water damage capacity and interstory shear resistance. Through the research and development of dynamic testing method including bridge superstructure and pavement asphalt concrete composite structure solid model, the preliminary test of structure response, And compared with the theoretical results of finite element model, according to the characteristics of cement concrete bridge, asphalt pavement structure and material, The corresponding construction technology is worked out, and the rationality and validity of the various technical measures are verified through the entity engineering, and the technical methods of bridge deck pavement construction are improved. Finally, the paper puts forward the structure and design method of asphalt concrete overlay structure, skeleton and extrusion grade of cement concrete bridge deck based on functional requirements, and the method of determining the best asphalt mixture ratio based on the most closely squeezed state. The test platform of full-scale structure of bridge deck pavement system is established, and the test method of mechanical response of deck pavement system based on element full-scale bridge deck structure model is put forward.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：U448.33;U443.33

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