地震荷載作用下粘彈性地基上橋梁結(jié)構(gòu)特性分析
[Abstract]:As a high standard passenger dedicated railway line, it is a basic requirement for high-speed railway to maintain smooth running, so continuous beam bridges are widely used. Bridge is the link of land transportation, which makes the transportation network become a whole and convenient to travel. When the earthquake occurs, the bridge is the lifeline, which ensures the connection between the disaster area and the outside world. So the earthquake resistance of the bridge is very important. In this paper, time-history analysis method and finite element method are used to calculate the time-history response of bridge structure under seismic load. The main contents are as follows: 1. In this paper, the principle, advantages and concrete contents of the method of time-history analysis for structures under earthquake load are introduced. The Maxwell model and Kelvin model of viscoelastic foundation are described, and the equations of motion of bridge structure under earthquake load are given. The finite element model of the three-span continuous box girder bridge is established, and the dynamic characteristics of the structure are analyzed, and the natural vibration frequency and vibration mode of the structure are obtained. The seismic time response analysis is carried out on the direction of the bridge along the bridge and the direction of the transverse bridge, and the displacement, bending moment, shear response and the stress at the bottom section of the pier are given. The comparison between the numerical simulation results and the simplified method of railway seismic code shows that the numerical simulation results are more reasonable and the simplified method results are more safety. 4. The displacement, bending moment and shear response curve of the structure under seismic load are analyzed, and the maximum values of displacement, bending moment and shear response of pier under the same seismic wave are compared. The maximum response of displacement, bending moment and shear force under the same direction of different seismic waves.
【學(xué)位授予單位】:西安理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:U441
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 王天利;李青寧;王敏利;閆雯;;復(fù)雜立交時程分析地震輸入的選擇和人工合成[J];廣西大學(xué)學(xué)報(自然科學(xué)版);2014年04期
2 潘旦光;;直接確定Rayleigh阻尼系數(shù)的一種優(yōu)化方法[J];工程力學(xué);2013年09期
3 李青寧;朱坤;高依強(qiáng);;多點激勵下不同墩高對曲線橋地震響應(yīng)分析[J];交通科技與經(jīng)濟(jì);2013年05期
4 王東升;岳茂光;李曉莉;孫治國;屈浩;;高墩橋梁抗震時程分析輸入地震波選擇[J];土木工程學(xué)報;2013年S1期
5 李建亮;趙晶;李福海;何玉林;亢川川;;結(jié)構(gòu)抗震設(shè)計時程分析法的分析研究[J];四川地震;2011年04期
6 王家全;張信貴;易念平;方崇;;場地土卓越周期變化的試驗分析[J];廣西大學(xué)學(xué)報(自然科學(xué)版);2010年04期
7 易倫雄;;南京大勝關(guān)長江大橋大跨度鋼桁拱橋設(shè)計研究[J];橋梁建設(shè);2009年05期
8 楊志勇;黃吉鋒;邵弘;;彈性與彈塑性動力時程分析方法中若干問題探討[J];建筑結(jié)構(gòu)學(xué)報;2009年S1期
9 趙穩(wěn);;客運(yùn)專線大跨度連續(xù)梁橋橋墩時程反應(yīng)分析與研究[J];鐵道建筑;2008年09期
10 高宗余;;武漢天興洲公鐵兩用長江大橋總體設(shè)計[J];橋梁建設(shè);2007年01期
相關(guān)碩士學(xué)位論文 前2條
1 左振鋒;連續(xù)梁橋樁柱地震響應(yīng)分析與抗震設(shè)計研究[D];長安大學(xué);2013年
2 王偉;反應(yīng)譜法和時程分析法在高層抗震計算中的對比分析[D];華南理工大學(xué);2012年
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