本文選題：廊橋 + 主拱圈��； 參考：《重慶交通大學(xué)》2015年碩士論文

【摘要】：隨著我國經(jīng)濟(jì)的快速發(fā)展和人們審美情趣的提高,全國各地在城市建設(shè)和旅游景區(qū)的開發(fā)過程中紛紛開始建設(shè)景觀廊橋,以營造更加美好的環(huán)境氛圍,不同的地域環(huán)境和文化屬性,所建造的廊橋風(fēng)格也不同�，F(xiàn)代廊橋作為中國古典園林文化和科技進(jìn)步的結(jié)晶,其跨度和規(guī)模越來越龐大,使用功能也更加廣泛,橋梁與橋上房屋之間的關(guān)系也更趨復(fù)雜。當(dāng)今,我國對景觀廊橋的研究較少,而季節(jié)溫度效應(yīng)對廊橋影響的研究更少,由于廊橋是橋與房屋的結(jié)合體,其體表面積比一般橋梁大的多,因此,考慮溫度對廊橋的影響是很必要的。本文以四川省劍閣縣劍門新區(qū)清江河景觀廊橋?yàn)楣こ瘫尘?運(yùn)用有限元分析軟件MIDAS/CIVIL建立空間模型進(jìn)行多種工況條件下的模擬,對比分析廊橋和同荷載條件拱橋受季節(jié)溫度效應(yīng)影響時其主拱圈、立柱、縱梁和橋墩等結(jié)構(gòu)構(gòu)件主要控制截面處內(nèi)力和位移的變化規(guī)律,并根據(jù)這些規(guī)律提出相關(guān)建議和意見,供同類廊橋和拱橋的設(shè)計、施工、運(yùn)營提供參考。按規(guī)范規(guī)定分別將溫度荷載加載到廊橋和同荷載條件下的拱橋,發(fā)現(xiàn)二者在季節(jié)溫度效應(yīng)影響下均表現(xiàn)出隨著季節(jié)溫度線性變化其內(nèi)力也線性改變的規(guī)律;溫度上升使兩種橋主拱圈上撓,溫度下降使其主拱圈下?lián)?而且最大位移均發(fā)生在每個主拱圈的拱頂處。季節(jié)溫度效應(yīng)對廊橋內(nèi)力和變形的影響大于同荷載條件下的拱橋。為了保證廊橋能更加安全、耐久的使用,設(shè)計時應(yīng)該考慮溫度效應(yīng)對其造成的影響。
[Abstract]:With the rapid development of our country's economy and the improvement of people's aesthetic taste, in the process of urban construction and tourism scenic spot development, all over the country began to build landscape bridges one after another in order to create a more beautiful environmental atmosphere. Different regional environment and cultural attributes, the style of the bridge is also different. As the crystallization of the Chinese classical garden culture and the progress of science and technology, the modern gallery bridge is more and more extensive in span and scale, and the relationship between the bridge and the houses on the bridge is becoming more and more complicated. Nowadays, there are few researches on the landscape bridges in China, and less on the effects of seasonal temperature on the bridges. Because the bridges are the combination of bridges and houses, the surface area of the bridges is much larger than that of ordinary bridges. It is necessary to consider the influence of temperature on the bridge. Based on the engineering background of Qingjiang River Landscape Corridor Bridge in Jiange County, Sichuan Province, this paper establishes a spatial model by using finite element analysis software MIDAS/CIVIL to simulate the bridge under various working conditions. The variation laws of internal forces and displacements of main arch rings, columns, longitudinal beams and piers of the covered bridge and the arch bridge under the same load condition affected by the seasonal temperature effect are compared and analyzed, and the relevant suggestions and suggestions are put forward according to these laws. To provide reference for the design, construction and operation of similar covered bridges and arch bridges. According to the code, the temperature load is loaded into the bridge and the arch bridge under the same load condition, and it is found that both of them show the law that the internal force changes linearly with the seasonal temperature under the influence of the seasonal temperature effect. The temperature rise causes the two kinds of bridge main arch ring to flex up, and the temperature drop causes the main arch ring to deflect down, and the maximum displacement occurs at the top of each main arch ring. The effect of seasonal temperature on the internal force and deformation of the bridge is greater than that of the arch bridge under the same load. In order to ensure more safe and durable use of the bridge, the temperature effect should be considered in the design.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U441.5

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 王向陽;地基不均勻沉降對框架結(jié)構(gòu)影響的研究[D];蘭州理工大學(xué);2011年

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本文編號：1814834