發(fā)布時間：2018-03-18 08:41

  本文選題：重載鐵路　切入點：掛籃　出處：《西南交通大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：重載鐵路,是指行駛的列車總重大,行駛貨車軸重大或行車密度及運量特大的鐵路,我國重載鐵路運輸自20世紀(jì)80年代開始發(fā)展,雖然起步較晚,但發(fā)展十分迅速。本論文根據(jù)"上跨博萊高速公路特大橋" 1-(48m+80m+48m)雙線連續(xù)箱梁的掛籃懸臂施工為研究背景,通過利用MIDAS軟件及相關(guān)力學(xué)理論,并對其施工過程受力進行計算和驗算,其中:通過掛籃的總體結(jié)構(gòu)、掛籃的材料及允許應(yīng)力、主要技術(shù)指標(biāo)及計算荷載、計算工況、結(jié)構(gòu)計算及計算結(jié)果及掛籃試拼加載試驗對掛籃進行受力分析與施工控制;通過0號段受力分析、邊跨直線段受力分析及支架預(yù)壓對0號段和邊跨直線段進行受力分析與施工控制;通過邊跨合攏段鎖定、中跨合攏段鎖定、合攏段施工工藝及預(yù)應(yīng)力摩阻損失測試對合攏段進行受力分析與施工控制。本論文在掛籃受力分析與施工控制方面,得出掛籃的材料及允許應(yīng)力、掛籃施工滿足其強度、剛度和穩(wěn)定性的允許范圍,以及掛籃試拼加載的試驗結(jié)果;在0號段和邊跨直線段受力分析與施工控制方面,得出0號段及邊跨直線段施工滿足其強度、剛度和穩(wěn)定性的允許范圍,以及支架預(yù)壓的試驗結(jié)果;在合攏段受力分析與施工控制方面,得出邊跨合攏段鎖定和中跨合攏段鎖定的允許范圍,以及預(yù)應(yīng)力摩阻損失測試的試驗結(jié)果。
[Abstract]:Heavy haul railway is a kind of railway with heavy train running, heavy axle running or heavy traffic density and volume. Heavy haul railway has been developed since 1980s in China, although it started relatively late. But the development is very rapid. Based on the cantilever construction of double line continuous box girder of "Super Bridge of Bole Expressway" (1-48m 80m 48m), this paper makes use of MIDAS software and relevant mechanics theory. And the stress of the construction process is calculated and checked, including: the overall structure of the hanging basket, the material and allowable stress of the hanging basket, the main technical indexes and the calculation load, and the calculation work condition, The structure calculation and calculation results and test loading test of hanging basket are carried out to analyze the force and control the construction of the hanging basket, and through the force analysis of section 0, Force analysis of side span straight section and support preloading force analysis and construction control to 0 section and edge span straight line section, locking through side span closing section, middle span closing segment locking, In this paper, the material and allowable stress of hanging basket are obtained in the aspects of force analysis and construction control, and the strength of hanging basket construction is satisfied. The allowable range of stiffness and stability, as well as the test results of trial loading of hanging basket, in the aspects of force analysis and construction control of section 0 and side span straight section, it is obtained that the construction of section 0 and straight section of edge span satisfies its strength. The allowable range of stiffness and stability, as well as the test results of support preloading, as well as the allowable range of locking of side span closure segment and middle span closure segment in the aspects of force analysis and construction control of closing section, And the test results of prestress friction loss test.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U445.4

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本文編號：1628860