【摘要】：獨塔斜拉橋的內(nèi)力和主橋的線形可以通過拉索的索力來調(diào)節(jié)，所以可以通過優(yōu)化成橋索力來優(yōu)化斜拉橋的成橋受力狀態(tài)。當斜拉橋的受力體系確定后，可以找到一組索力，即合理成橋索力，使斜拉橋達到合理的成橋受力狀態(tài)。在獨折塔斜拉橋中，折塔主要影響斜拉橋的整體結(jié)構(gòu)受力，因此，合理成橋索力必須保證折塔斜拉橋的受力狀態(tài)。 本文研究了兩個問題：第一什么是合理成橋狀態(tài)；第二怎樣調(diào)整索力來得到這個成橋狀態(tài)。 文章首先總結(jié)了確定斜拉橋合理成橋索力的方法，分析了影響矩陣法和最小彎曲能量法等原理，將這幾種方法做了比較，并分析了各自的優(yōu)缺點。將實測值和設計值進行了對比，對施工過程起一定的指導作用。 在斜拉橋的計算和設計中，確定成橋目標狀態(tài)是一項至關(guān)重要的工作。本文對長興呂山大橋進行了計算，，利用Midas Civil軟件建立了全橋模型，采用影響矩陣法對全橋進行了分析。首先計算出未知荷載系數(shù)，然后利用索控制功能進行調(diào)索，通過多次索力的調(diào)整，最終得到了全橋的最優(yōu)索力，即合理成橋索力。 獲得斜拉橋的合理成橋狀態(tài)至關(guān)重要，這將是今后橋梁領(lǐng)域研究的一個主要問題。相信可以得到一種更加有效地方法，使得斜拉橋結(jié)構(gòu)和受力更加的合理。
[Abstract]:The internal force of the single-tower cable-stayed bridge and the alignment of the main bridge can be adjusted by the cable force of the cable, so the cable force of the cable-stayed bridge can be optimized to optimize the stress state of the cable-stayed bridge. When the stress system of cable-stayed bridge is determined, a set of cable forces can be found, that is, reasonable cable force, so that the cable-stayed bridge can reach a reasonable stress state. In the single broken tower cable-stayed bridge, the broken tower mainly affects the overall structural force of the cable-stayed bridge, so the reasonable cable force must ensure the stress state of the broken tower cable-stayed bridge. In this paper, two problems are studied: first, what is a reasonable bridge state; and second, how to adjust the cable force to get the bridge state. In this paper, the methods of determining the reasonable cable force of cable-stayed bridge are summarized, the principles of influence matrix method and minimum bending energy method are analyzed, these methods are compared, and their advantages and disadvantages are analyzed. The measured value is compared with the design value, which plays a certain guiding role in the construction process. It is very important to determine the target state of cable-stayed bridge in the calculation and design of cable-stayed bridge. In this paper, the Changxing Lushan Bridge is calculated, the whole bridge model is established by using Midas Civil software, and the influence matrix method is used to analyze the whole bridge. Firstly, the unknown load coefficient is calculated, and then the cable control function is used to adjust the cable. Through the adjustment of the cable force many times, the optimal cable force of the whole bridge, that is, the reasonable cable force, is obtained. It is very important to obtain the reasonable completion state of cable-stayed bridge, which will be a main problem in the field of bridge research in the future. It is believed that a more effective method can be obtained to make the structure and force of cable-stayed bridge more reasonable.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U448.27

【參考文獻】

相關(guān)期刊論文 前10條

1 范立礎;世界最大跨徑的斜拉橋─—法國諾曼弟（Normandy）大橋的設計及施工[J];重慶交通學院學報;1995年03期

2 陳政清;顏全勝;;大跨度斜拉橋的非線性分析[J];長沙鐵道學院學報;1991年03期

3 王永安;劉世同;譚紅梅;肖汝誠;;斜拉橋索力優(yōu)化理論研究[J];公路;2006年05期

4 樓莊鴻;多孔斜拉橋[J];公路交通科技;2002年02期

5 陳鐵冰,張偉;大跨度斜拉橋極限承載能力研究[J];公路交通科技;2004年04期

6 杜蓬娟,張哲,譚素杰;斜拉橋合理成橋狀態(tài)索力確定的優(yōu)化方法[J];公路交通科技;2005年07期

7 Niels ,J.Gimsing ,大冢久哲 ,嚴國敏;特大跨度的斜拉橋[J];國外橋梁;1990年03期

8 張強,朱華民;FRP材料在日本預應力混凝土橋梁及其它結(jié)構(gòu)中的應用[J];國外橋梁;1996年04期

9 嚴國敏;日本一座別具一格的斜拉橋──浜名湖曲塔混合梁斜拉橋[J];國外橋梁;1997年01期

10 易圣濤;;我國第一座斜張橋的現(xiàn)狀[J];公路;1990年03期

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