本文選題：斜拉橋 + 高低墩��； 參考：《西南交通大學(xué)》2015年碩士論文

【摘要】：萬州長江三橋?yàn)橹骺?30m的雙塔混合梁斜拉橋。該橋南、北塔的下塔墩高度差異較大,其中北塔的下塔墩高度13.70m,南塔的下塔墩高度53.62m,因此橋梁結(jié)構(gòu)存在著較大的非對稱性。本文以萬州長江三橋?yàn)楣こ瘫尘?研究了該類高低墩斜拉橋的地震響應(yīng)特性,本文具體內(nèi)容如下：(1)綜述了斜拉橋的發(fā)展概況和抗震分析研究現(xiàn)狀,探討了目前大跨度斜拉橋地震響應(yīng)分析研究的不足。(2)總結(jié)了橋梁地震反應(yīng)分析的一些常用方法,包括靜力法、反應(yīng)譜法、動(dòng)態(tài)時(shí)程分析法和功率譜法,討論了以上分析方法的適用范圍及優(yōu)缺點(diǎn)。(3)詳述了萬州長江三橋的有限元建模過程,分析了該橋的自振特性,討論了樁-土-結(jié)構(gòu)相互作用對斜拉橋自振特性的影響。(4)采用反應(yīng)譜方法,對萬州長江三橋地震響應(yīng)進(jìn)行了計(jì)算分析,探討了南、北橋塔地震響應(yīng)的規(guī)律；研究了樁-土-結(jié)構(gòu)相互作用對斜拉橋地震響應(yīng)的影響；討論了高低墩斜拉橋在裸塔施工階段的地震響應(yīng)規(guī)律。(5)采用時(shí)程方法,計(jì)算分析了一致激勵(lì)和多點(diǎn)激勵(lì)下萬州長江三橋的地震響應(yīng),比較了南、北橋塔地震響應(yīng)的異同點(diǎn),并研究了行波效應(yīng)對大跨度斜拉橋地震響應(yīng)的影響。
[Abstract]:Wanzhou Yangtze River Bridge is a 730m-span cable-stayed bridge with two-tower hybrid beams. In the south and north of the bridge, the height of the lower tower pier varies greatly, among which the lower tower pier height of the north tower is 13.70 m, and the lower tower pier height of the south tower is 53.62 m, so the bridge structure has a large asymmetry. In this paper, the seismic response characteristics of this kind of cable-stayed bridge with high and low piers are studied with Wanzhou Yangtze River Bridge as the engineering background. The main contents of this paper are as follows: 1) the development and seismic analysis of cable-stayed bridge are summarized. The deficiency of seismic response analysis of long-span cable-stayed bridges at present is discussed. Some common methods for seismic response analysis of bridges are summarized, including static method, response spectrum method, dynamic time-history analysis method and power spectrum method. The application of the above analysis method and its advantages and disadvantages are discussed. The finite element modeling process of Wanzhou Yangtze River third Bridge is described in detail, and the natural vibration characteristics of the bridge are analyzed. The influence of pile-soil-structure interaction on the natural vibration characteristics of cable-stayed bridge is discussed. The response spectrum method is used to calculate and analyze the seismic response of Wanzhou Yangtze River third Bridge. The influence of pile-soil-structure interaction on the seismic response of cable-stayed bridge is studied, and the seismic response law of cable-stayed bridge with high and low piers in the construction stage of bare tower is discussed. The seismic responses of Wanzhou Yangtze River Bridge under uniform excitation and multi-point excitation are calculated and analyzed. The similarities and differences of seismic responses of the towers of the north and south bridges are compared, and the effect of traveling wave effect on the seismic response of long-span cable-stayed bridges is studied.
【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】：2015
【分類號】：U448.27;U442.55

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 高永;劉慈軍;彭天波;袁萬城;;阻尼器和彈性索組合使用對大跨斜拉橋地震反應(yīng)的影響[J];結(jié)構(gòu)工程師;2008年05期

2 李建中,范立礎(chǔ);非規(guī)則梁橋縱向地震反應(yīng)及碰撞效應(yīng)[J];土木工程學(xué)報(bào);2005年01期

3 張季風(fēng);;東日本大地震對日本經(jīng)濟(jì)與世界經(jīng)濟(jì)的影響[J];現(xiàn)代日本經(jīng)濟(jì);2011年04期

4 李永樂;侯光陽;何畏;陳榮金;;矮塔斜拉橋地震反應(yīng)譜分析[J];西南公路;2010年04期

5 周藝;韋小浩;張?zhí)?;地震動(dòng)功率譜模型綜述[J];中國科技信息;2010年24期

相關(guān)碩士學(xué)位論文 前4條

1 宗霏;多塔斜拉橋剛性鉸動(dòng)力分析[D];西南交通大學(xué);2012年

2 嚴(yán)猛;大跨度系桿拱橋地震反應(yīng)特性分析研究[D];西南交通大學(xué);2011年

3 朱金;700m主跨混合梁斜拉橋地震響應(yīng)分析和液體粘滯阻尼器參數(shù)優(yōu)化[D];西南交通大學(xué);2012年

4 王建利;大跨度斜拉橋地震響應(yīng)分析[D];西南交通大學(xué);2013年

，

本文編號：1783414