【摘要】：斜拉橋是一種特殊結構的橋梁，其特殊之處就是在于可以給定一個拉索的初拉力，這個初拉力可以改變整個斜拉橋結構體系的內力和變形以及各個部件的受力，但是影響斜拉橋內力的因素還有很多，例如加設輔助墩。對于斜拉橋這種大跨度的超靜定結構體系，在恒荷載和活荷載作用下，結構體系受力很大；在地震、臺風以及車輛移動荷載等動力作用下，，動力反應比較敏感，所以研究斜拉橋在有無輔助墩條件下的靜力以及動力反應是很有必要的。本文以飛云江三橋為論文研究背景，通過改變該獨塔斜拉橋有無輔助墩條件下兩種不同的結構體系，利用有限元軟件Midas/civil2010建立兩種體系模型，系統(tǒng)分析了輔助墩對獨塔斜拉橋的靜力、動力以及地震響應影響問題。本文的主要工作內容如下： （1）利用斜拉橋中的斜拉索力無約束優(yōu)化法中的彎曲能量最小法，確定平陽側有、無輔助墩條件下兩種結構體系的成橋索力，并將這兩種成橋索力結果與實際成橋索力進行比較。 （2）以工程實際的成橋索力為基礎，對獨塔斜拉橋在有、無輔助墩條件下進行靜力分析，對比在有無輔助墩條件下兩種不同結構體系在恒荷載、活荷載、移動荷載、溫度荷載、荷載組合等工況下的內力以及變形的規(guī)律。 （3）計算有、無輔助墩條件下兩種不同結構體系的獨塔斜拉橋的動力特性，包括自振周期、頻率以及振型特點等。 （4）對獨塔斜拉橋進行反應譜分析，對比在有、無輔助墩條件下兩種結構體系地震作用下的動力響應。
[Abstract]:The cable-stayed bridge is a kind of special structure bridge. The special part of the bridge is that the initial tension of a cable can be given, which can change the internal force and deformation of the whole cable-stayed bridge structure system and the force of each component. However, there are many factors that affect the internal force of cable-stayed bridge, such as adding auxiliary piers. For long-span statically indeterminate structures such as cable-stayed bridges, the structural system is subjected to very large forces under constant and live loads, and the dynamic response is more sensitive to earthquakes, typhoons and moving loads of vehicles. So it is necessary to study the static and dynamic responses of cable-stayed bridges with or without auxiliary piers. In this paper, the Feiyun River third Bridge is taken as the research background. By changing the two different structural systems of the single-tower cable-stayed bridge with or without auxiliary piers, the finite element software Midas/civil2010 is used to establish two kinds of system models. The influence of auxiliary piers on static, dynamic and seismic response of single tower cable-stayed bridge is systematically analyzed. The main work of this paper is as follows: (1) using the minimum bending energy method of the cable-stayed cable force optimization method in the cable-stayed bridge, the cable forces of the two structural systems are determined under the condition of the pingyang side and the non-auxiliary pier. The results are compared with the actual cable forces. (2) based on the actual bridge cable forces, the static analysis of single tower cable-stayed bridges with or without auxiliary piers is carried out. The internal forces and deformation of two different structural systems under constant load, live load, moving load, temperature load, load combination and so on are compared under the condition of auxiliary pier. (3) the law of internal force and deformation of two different structural systems under constant load, live load, moving load, temperature load, load combination, etc. The dynamic characteristics of two kinds of single tower cable-stayed bridges without auxiliary piers, including the natural vibration period, frequency and mode characteristics, etc. (4) the response spectrum analysis of single tower cable-stayed bridge is compared with that of single tower cable-stayed bridge. Dynamic response of two structural systems under seismic action without auxiliary piers.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U448.27

【參考文獻】

相關期刊論文 前10條

1 程宇鵬;王福敏;尚軍年;;輔助墩位置對索輔梁橋結構效應的影響[J];重慶交通大學學報(自然科學版);2010年04期

2 潘路平;楊成斌;梅應華;楊善紅;;輔助墩對PC三塔斜拉橋受力影響分析[J];工程與建設;2009年03期

3 陳云海;陳可;呂建鳴;;PC斜拉橋輔助墩擺索拉力支座恢復加固施工控制分析[J];公路交通科技;2011年04期

4 陳云海;李宏江;呂建鳴;;PC斜拉橋輔助墩擺索拉力支座恢復后的索力調整[J];公路交通科技;2012年06期

5 靳紅欣,張俊玲;強夯法施工在少洛高速公路中的應用[J];中外公路;2005年03期

6 周艷;宋君超;潘瑞松;;斜拉橋有限元建模及動力特性分析[J];中外公路;2011年01期

7 喻梅;李喬;廖海黎;;輔助墩對多塔斜拉橋力學行為的影響[J];世界橋梁;2010年03期

8 李宏江;呂建鳴;陳云海;蔣含莞;左新黛;;PC斜拉橋輔助墩拉力擺斷裂后的結構體系恢復[J];世界橋梁;2011年01期

9 王偉;黃永福;周聰;朱盛強;;輔助墩對無上橫梁雙直立塔柱斜拉橋的影響[J];中外公路;2012年05期

10 王雨陽;;淺談半漂浮體系結合梁主梁過輔助墩工藝[J];科技創(chuàng)新與應用;2012年32期

相關博士學位論文 前1條

1 霍學晉;異型拱橋的非線性受力行為研究及動力特性分析[D];西南交通大學;2011年

本文編號：2220400