本文選題：連續(xù)配筋混凝土路面 + 有限元��； 參考：《湖南大學(xué)》2014年碩士論文

【摘要】：連續(xù)配筋混凝土路面具有普通水泥混凝土路面強(qiáng)度高、抗變形能力強(qiáng)的特點(diǎn)，同時由于縱向連續(xù)配筋的存在很好地避免了普通水泥混凝土路面常見的板角斷裂、板底脫空、接縫唧呢等常見病害。因此，連續(xù)配筋混凝土路面成為重交通高等級路面的首選，也成為近年來國內(nèi)外研究的熱點(diǎn)。 基層為路面提供了重要支撐，不同的基層類型對于連續(xù)配筋混凝土路面力學(xué)性能的影響也有著明顯的區(qū)別。本文利用大型有限元分析軟件ANSYS建立了一個道路層狀模型進(jìn)行計(jì)算分析，在交通荷載BZZ-100與溫度荷載作用下，對不同類型基層支撐下的連續(xù)配筋混凝土路面的力學(xué)性能進(jìn)行對比分析，最后得出具體結(jié)論。 在交通荷載作用下，路面結(jié)構(gòu)選用彈性層狀體系，，路基采用文克勒地基。通過計(jì)算發(fā)現(xiàn)，車輪外側(cè)作用在路面板邊緣為最不利荷位。通過對比不同基層支撐下連續(xù)配筋混凝土路面的應(yīng)力應(yīng)變云圖，發(fā)現(xiàn)基層的彈性模量是影響路面應(yīng)力應(yīng)變的主要因素，基層的彈性模量越大，具有越強(qiáng)的支撐能力與應(yīng)力擴(kuò)散能力，路面的混凝土與鋼筋產(chǎn)生的應(yīng)力應(yīng)變越小，分布也越均勻。 在溫度荷載作用下，路面與路基均采用彈性層狀體系。通過溫度場的計(jì)算發(fā)現(xiàn)，不同的基層類型對整個道路溫度場的計(jì)算結(jié)果影響不大。實(shí)踐證明，基層對面層溫度應(yīng)力的影響主要是面層底面與基層頂面的層間接觸，不同的層間接觸提供不同的約束。瀝青混凝土因其多孔的結(jié)構(gòu)特點(diǎn)，在澆筑連續(xù)配筋混凝土?xí)r，水泥漿滲入基層，因此形成了較牢固的層間接觸，很好地抑制了面板的溫度變形。
[Abstract]:Continuous reinforced concrete pavement has the characteristics of high strength and strong anti-deformation ability of ordinary cement concrete pavement. At the same time, because of the existence of longitudinal continuous reinforcement, the common slab angle fracture and slab bottom void are avoided. Seams and other common diseases. Therefore, continuous reinforced concrete pavement has become the first choice of heavy traffic high-grade pavement, and has become a hot spot of domestic and foreign research in recent years. The base provides important support for the pavement, and the influence of different types of base on the mechanical properties of continuously reinforced concrete pavement is obviously different. In this paper, a layered road model is established by using the finite element analysis software ANSYS. Under the action of traffic load BZZ-100 and temperature load, The mechanical properties of continuous reinforced concrete pavement supported by different types of base are compared and analyzed, and the concrete conclusions are obtained. Under traffic load, elastic layered system is used for pavement structure and Wenkler foundation is used for roadbed. It is found by calculation that the most unfavorable load position is the lateral wheel acting on the edge of the road panel. By comparing the stress-strain cloud diagrams of concrete pavement with continuous reinforcement under different base support, it is found that the elastic modulus of the base is the main factor affecting the stress and strain of the pavement, and the greater the elastic modulus of the base is, The stronger the supporting capacity and the stress diffusion ability, the smaller the stress and strain of concrete and steel bar, and the more uniform the distribution. Under the action of temperature load, both pavement and roadbed adopt elastic layered system. Through the calculation of the temperature field, it is found that the different base type has little effect on the calculation results of the whole road temperature field. It is proved by practice that the influence of the temperature stress on the base layer is mainly the contact between the bottom surface of the surface layer and the top surface of the base layer, and the different interlayer contact provides different constraints. Because of its porous structure, the cement slurry infiltrates into the base course when the concrete is continuously reinforced, thus forming a solid interlayer contact, which can restrain the temperature deformation of the slab well.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U416.216

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