2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、 學(xué) 位 論 文 獨 創(chuàng) 性 說 明 本人鄭重聲明: 所呈交的學(xué)位論文是我個人在導(dǎo)師指導(dǎo)下進行的研究工作及其取得研究成果。盡我所知,除了文中加以標(biāo)注和致謝的地方外,論文中不包含其他人或集體已經(jīng)公開發(fā)表或撰寫過的研究成果, 也不包含為獲得西安科技大學(xué)或其他教育機構(gòu)的學(xué)位或證書所使用過的材料。 與我一同工作的同志對本研究所做的任何貢獻均已在論文中做了明確的說明并表示了謝意。 學(xué)位論文作者簽名: 日期: 學(xué) 位 論 文 知

2、 識 產(chǎn) 權(quán) 聲 明 書 本人完全了解學(xué)校有關(guān)保護知識產(chǎn)權(quán)的規(guī)定,即:研究生在校攻讀學(xué)位期間論文工作的知識產(chǎn)權(quán)單位屬于西安科技大學(xué)。 學(xué)校有權(quán)保留并向國家有關(guān)部門或機構(gòu)送交論文的復(fù)印件和電子版。本人允許論文被查閱和借閱。學(xué)??梢詫⒈緦W(xué)位論文的全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫進行檢索,可以采用影印、縮印或掃描等復(fù)制手段保存和匯編本學(xué)位論文。同時本人保證,畢業(yè)后結(jié)合學(xué)位論文研究課題再撰寫的文章一律注明作者單位為西安科技大學(xué)。 保密論文待解密后適

3、用本聲明。 學(xué)位論文作者簽名: 指導(dǎo)教師簽名: 年 月 日3 Subject :The study of using FPS to reinforce existing bridges Specialty:Structural Engineering Name :Gao Zhile (Signature) Instructo

4、r:Han Jiangshui (Signature) ABSTRACT At present, due to the concept of a single level of defence based on intensity and flexible design method of the existing bridge fallen behind relatively,

5、China has a large number of bridges which are under the situation of lacking seismic resistance. Coupled with the idea of China continent is over a plurality of seismic sections, frequent earthquakes have a huge threat

6、to security on people's lives and property, and the bridges which are known as the lifeline of the project play a significant role in the process of disaster relief. In view of these, seismic reinforcement for existi

7、ng bridges which are lack of the seismic performance is very necessary. Research in this paper is based on the friction pendulum support which is widely uesd in foreign countries currently , and it will analyze FPS’ isol

8、ation effect on the seismic reinforcement of existing bridge. This paper takes a three-span continuous girder bridge which is located in theⅠclass site for example, use the finite element analysis software Midas civil to

9、 build three-dimensional dynamic model of the bridge. Eigenvalue analysis shows that the bridge has high overall rigidity and its modal quality focus on the first and the second modal in horizontal direction, so the seis

10、mic reinforcement of this bridge is suitable for isolation solution. Then it use Push-over method to analyze this continuous beam bridge, according to the “08 rules” to evaluate the seismic performance of the bridge and

11、turns out that it does not meet the requirements, so it needs to be seismic reinforced. Then it designs FPS for the bridge to replace all the original supports of the bridge and takes eigenvalue analysis, the result show

12、s that the new bridge’s natural vibration period extended to more than three times of the original bridge. Then it analyzes the seismic effect of isolation in E1 and E2 two-level earthquake, finds that effects of interna

13、l forces of the bridge piers dropped significantly and meet the regulatory requirements; meanwhile, considering for the displacement of the bridge superstructure is too large, it sets viscous damping device so that the d

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