本文選題：長聯(lián)大跨 + 鐵路連續(xù)梁　； 參考：《西安工業(yè)大學(xué)》2014年碩士論文

【摘要】：隨著近年鐵路技術(shù)的發(fā)展,大跨長聯(lián)連續(xù)梁結(jié)構(gòu)得到廣泛應(yīng)用,主橋跨度和聯(lián)長不斷刷新紀(jì)錄。對大跨長聯(lián)鐵路連續(xù)梁的抗震性能及減隔震方案進(jìn)行深入的研究分析,為提高該類橋梁抗震性與安全性設(shè)計提供一定的科學(xué)依據(jù)具有很重要的意義。本文在闡述結(jié)構(gòu)地震反應(yīng)分析基本理論的基礎(chǔ)上,以烏錫鐵路黃河特大橋為背景進(jìn)行了以下幾個方面的分析與探討：1)采用橋梁有限元分析程序MIDAS/CIVIL2012建立全橋空間有限元模型,并對其模態(tài)進(jìn)行分析。通過分析不同邊界條件下結(jié)構(gòu)的地震反應(yīng),總結(jié)樁-土相互作用對結(jié)構(gòu)地震響應(yīng)的影響。2)進(jìn)行全橋地震響應(yīng)的反應(yīng)譜分析和時程分析,并對兩種分析方法的計算結(jié)果進(jìn)行比較。3)提出橋梁的減隔震方案,并對不同方案進(jìn)行參數(shù)化分析,選擇適合的減隔震方案。4)分析行波效應(yīng)對長聯(lián)大跨連續(xù)梁地震響應(yīng)的影響。分析結(jié)果表明：減隔震技術(shù)能大幅度減小大跨長聯(lián)鐵路連續(xù)梁地震響應(yīng)內(nèi)力,并取得良好的經(jīng)濟(jì)效益,不同的減隔震設(shè)施減震效果不同,實際應(yīng)用中應(yīng)根據(jù)橋梁實際情況合理選擇。
[Abstract]:With the development of railway technology in recent years, long-span continuous beam structure has been widely used. The seismic performance and isolation scheme of long-span continuous railway beams are deeply studied and analyzed. It is of great significance to provide scientific basis for improving the seismic performance and safety design of this kind of bridges. On the basis of expounding the basic theory of structural seismic response analysis, taking the Yellow River Bridge of Wuxi Railway as the background, this paper analyzes and discusses the following aspects: 1) using the bridge finite element analysis program Midas / CIVIL2012 to establish the spatial finite element model of the whole bridge. And the modal analysis is carried out. By analyzing the seismic response of structures under different boundary conditions, the influence of pile-soil interaction on the seismic response of the structure is summarized. 2) the response spectrum and time history analysis of the seismic response of the whole bridge are carried out. The results of the two methods are compared. 3) the seismic isolation scheme of the bridge is proposed, and the parameterized analysis of different schemes is carried out, and the suitable isolation scheme .4) is selected to analyze the influence of traveling wave effect on the seismic response of long-span continuous beam. The analysis results show that the seismic response internal force of long-span continuous beam can be greatly reduced and good economic benefits can be obtained. In practical application, reasonable selection should be made according to the actual situation of the bridge.
【學(xué)位授予單位】：西安工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U442.55
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本文編號：2116158