【摘要】：自錨式懸索橋由于具有造型美觀、對地形適應能力強以及在一定跨度范圍內費用較低等特點，在近年來應用越來越加廣泛。自錨式懸索橋先梁后纜的施工順序使得體系轉換成為了施工過程中的關鍵階段。雖然到目前為止國內外已經建成了多座自錨式懸索橋，但是體系轉換特別是其中的吊索張拉過程仍然沒有一個統(tǒng)一的可遵循的方法，仍需要針對于某一橋梁制定出特有的吊索張拉方案，有必要去對這一方面進行研究。 本文所依托的工程為吉林市霧凇自錨式懸索橋，對其整個體系轉換過程進行分析控制。確定出張拉方案，首先是要給出合理的成橋狀態(tài)，計算出成橋主纜線形，主纜無應力長度，成橋索力等。在霧凇大橋的體系轉換過程中，對主纜的線形，主塔塔頂的偏位，，主梁的線形，吊索的索力以及主塔和主梁的應力狀況進行了監(jiān)控，通過對監(jiān)控數據的分析和計算，掌握了橋梁在體系轉換過程中的內力變化和線形變化，保證體系轉換過程的安全并根據實測數據對吊索張拉方案進行優(yōu)化調整。 在施工過程中，要能夠快速準確的獲取吊索的索力值，對現有的吊索索力公式進行對比和分析發(fā)現誤差仍然比較大，需要研究適用于自錨式懸索橋的吊索索力公式。在根據弦理論和梁理論所推導出的吊索索力公式的基礎上，分析了三段均勻吊索索力振動模型計算的可行性，引入了吊索長度修正系數的概念對吊索的索力公式進行了修正，運用該公式通過實測頻率和千斤頂張拉的吊索索力真實值對比，證明修正公式的結果滿足工程需要。
[Abstract]:Self-anchored suspension bridge is more and more widely used in recent years because of its beautiful shape, strong adaptability to terrain and low cost in a certain span range. The sequence of construction of self-anchored suspension bridge makes the system transformation into a key stage in the construction process. Although many self-anchored suspension bridges have been built at home and abroad so far, there is still no uniform method to follow in the system transformation, especially in the process of sling tension. It is still necessary to make a special sling tension scheme for a certain bridge, so it is necessary to study this aspect. The project supported in this paper is the rime self-anchored suspension bridge in Jilin city, and the whole system transformation process is analyzed and controlled. The first step in determining the tension scheme is to give a reasonable state of the bridge, calculate the main cable shape, the length of the main cable without stress, and the cable force of the bridge. In the process of system transformation of the rime bridge, the alignment of the main cable, the deflection of the top of the main tower, the alignment of the main girder, the cable force of the slings and the stress of the main tower and the main beam are monitored and monitored, and the monitoring data are analyzed and calculated. The change of internal force and line shape of bridge in the process of system transformation is grasped to ensure the safety of system transformation process and the sling tensioning scheme is optimized and adjusted according to the measured data. In the process of construction, in order to obtain the cable force value quickly and accurately, by comparing and analyzing the existing cable force formula, it is found that the error is still relatively large, so it is necessary to study the cable suspension force formula suitable for self-anchored suspension bridge. Based on the formula of cable force derived from string theory and beam theory, the feasibility of calculating the vibration model of three-stage uniform cable suspension force is analyzed. The concept of cable length correction coefficient is introduced to modify the cable force formula of sling. By comparing the measured frequency with the real value of the cable force of the Jack, it is proved that the result of the modified formula can meet the need of the project.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U448.25

【參考文獻】

相關期刊論文 前10條

1 李小珍,強士中;懸索橋主纜空纜狀態(tài)的線形分析[J];重慶交通學院學報;1999年03期

2 李映,林長川;剛性索懸索橋研究[J];重慶交通學院學報;2001年01期

3 陳露曄;;獨塔自錨式懸索橋吊桿張拉方案比較研究[J];城市道橋與防洪;2009年06期

4 齊東春;郭健;沈銳利;;懸索橋短吊索索力測試的探討[J];中國工程科學;2010年07期

5 楊大海;;自錨式懸索橋的特點與計算[J];工程與建設;2011年06期

6 陳長明,樊鐵石,石占良;鋼筋混凝土自錨式懸索橋施工[J];公路;2004年12期

7 宋鑫,邱文亮;萬新大橋主橋結構設計和施工控制[J];公路;2005年04期

8 檀永剛;張哲;黃才良;;一種自錨式懸索橋主纜線形的解析法[J];公路交通科技;2007年02期

9 孫永明;孫航;任遠;;頻率法計算勻質豎直拉索索力的實用公式[J];工程力學;2013年04期

10 T.J.R.Gurney ,戴振藩;恒比爾河橋[J];國外橋梁;1983年01期

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