本文選題：矮塔斜拉橋 + 0#塊��； 參考：《東北林業(yè)大學》2014年碩士論文

【摘要】：矮塔斜拉橋以其優(yōu)良的結(jié)構(gòu)性能以及良好的經(jīng)濟指標,得到越來越廣泛的應用。箱梁0#塊位于矮塔斜拉橋塔、墩、梁連接處,幾何形式和邊界條件都十分復雜,作為懸臂施工的起點,施工過程中承擔兩側(cè)懸臂重量,通常布置大量的普通鋼筋與預應力筋,并且隨著施工的進展應力不斷發(fā)生變化,處于復雜的三向受力狀態(tài),普通的平面桿系計算已不能滿足精度要求,因此建立0#塊三維空間有限元模型,細致分析0#塊空間應力狀態(tài)是十分必要的。 本文以浙江省常山大橋(65+108+65m雙塔單索面矮塔斜拉橋)為工程背景,首先運用MIDAS/civil有限元軟件,建立常山大橋平面桿系模型,進行全橋靜力分析,重點計算最大懸臂階段及成橋階段兩種工況下結(jié)構(gòu)內(nèi)力、位移、應力、索力,同時為后續(xù)0#塊實體模型的加載與分析提供數(shù)據(jù)準備；其次運用MIDAS/FEA有限元軟件,建立常山大橋0#塊空間有限元模型,基于箱梁空間應力分析理論,分別對最大懸臂階段及成橋階段0#塊三向正應力及主應力進行分析,細致掌握0#塊頂板、底板、腹板、橫隔板各區(qū)域的應力數(shù)值及分布規(guī)律；最后根據(jù)施工現(xiàn)場實際情況及理論計算結(jié)果,選取0#塊應力測試截面及測點,埋置傳感器跟蹤監(jiān)測各主要施工階段0#塊應力數(shù)值,總結(jié)懸臂施工過程中0#塊應力變化規(guī)律,并及時與理論計算值作對比校核,分析誤差產(chǎn)生原因,保證施工安全順利進行。 本文研究得出的結(jié)論可對依托工程提供數(shù)據(jù)支持,同時可為矮塔斜拉橋0#塊優(yōu)化設計、空間應力計算分析及應力監(jiān)測提供參考,具有重要的現(xiàn)實意義。
[Abstract]:The short tower cable-stayed bridge is more and more widely used because of its excellent structural performance and good economic index. The box girder 0# block is located in the short tower cable-stayed bridge tower, pier and beam connection, the geometric form and boundary condition are very complex. As the starting point of the cantilever construction, the weight of the cantilever on both sides of the cantilever construction is carried out in the construction process, and a large number of ordinary steel bars are usually arranged. With the prestressed reinforcement, and with the progress of the construction stress constantly changing, in the complex three direction force state, the ordinary plane bar system calculation can not meet the precision requirements. Therefore, it is necessary to establish the three-dimensional finite element model of 0# block and analyze the stress state of the 0# block in detail.
This paper takes the Changshan bridge in Zhejiang (65+108+65m Twin Towers single cable plane short tower cable-stayed bridge) as the engineering background. First, the MIDAS/civil finite element software is used to establish the plane bar model of Changshan bridge, and the static analysis of the whole bridge is carried out. The structural internal force, displacement, stress and cable force are calculated in the two working conditions of the maximum cantilever stage and the bridge stage. At the same time, it is the follow-up 0. The data preparation is provided for the loading and analysis of the block entity model. Secondly, the finite element model of the Changshan bridge 0# block is established by using the MIDAS/FEA finite element software. Based on the box beam spatial stress analysis theory, the three direction stress and the main stress of the maximum cantilever stage and the bridge stage 0# block are analyzed, and the roof, floor and web of the 0# block are carefully mastered. At last, according to the actual situation of the construction site and the theoretical calculation results, the stress test section and measuring point of the 0# block are selected according to the actual situation of the construction site and the theoretical calculation results. The stress value of the 0# block in the main construction stages is tracked by the buried sensor, and the stress variation law of the 0# block in the cantilever construction process is summarized, and the calculation value is in time with the theoretical calculation value. Compared with checking, the causes of errors are analyzed and the construction safety is ensured smoothly.
The conclusions obtained in this paper can provide data support for the support project, and can provide reference for the optimization design of the 0# block of the short tower cable-stayed bridge, the calculation and analysis of the spatial stress and the stress monitoring, which is of great practical significance.
【學位授予單位】：東北林業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U448.27;U441.5

【參考文獻】

相關(guān)期刊論文 前10條

1 於亞輝;張飛;徐斌;;矮塔斜拉橋最大雙懸臂狀態(tài)下應力分析[J];安徽建筑工業(yè)學院學報(自然科學版);2011年01期

2 楊進;羅永;羅學成;;連續(xù)剛構(gòu)0號塊的空間應力分析[J];公路;2011年06期

3 項貽強,豐碩,汪勁豐,王林;大跨徑單室預應力連續(xù)剛構(gòu)箱梁橋的靜力特性空間分析[J];公路交通科技;2005年03期

4 王立峰;劉龍;肖子旺;;大跨度矮塔斜拉橋結(jié)構(gòu)靜動力特性分析[J];中外公路;2013年03期

5 李濤;左正興;廖日東;;結(jié)構(gòu)仿真高精度有限元網(wǎng)格劃分方法[J];機械工程學報;2009年06期

6 吳難倒;劉志奇;;混凝土本構(gòu)關(guān)系及其分析軟件簡述[J];山西建筑;2009年01期

7 韓振勇;田仲超;周國華;;淺談矮塔斜拉橋的起源與發(fā)展[J];山西建筑;2010年01期

8 曲佳;劉義河;趙亮;時成偉;;矮塔斜拉橋0號塊隔板空間應力分析[J];北方交通;2011年02期

9 劉小敏,王華,楊萌,崔廣仁;混凝土本構(gòu)關(guān)系研究現(xiàn)狀及發(fā)展[J];河南科技大學學報(自然科學版);2004年05期

10 黃江;胡成;;某矮塔斜拉橋0號梁段空間應力分析[J];合肥工業(yè)大學學報(自然科學版);2012年08期

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