本文關(guān)鍵詞： 矮塔斜拉橋 寬幅箱梁 索力 0號塊 剪力滯效應(yīng)　出處：《合肥工業(yè)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：矮塔斜拉橋作為一種新型的橋梁結(jié)構(gòu)問世至今僅僅30余年，但其發(fā)展無論是在結(jié)構(gòu)形式、材料特性還是理論研究等各方面都日趨完善。隨著豐富的設(shè)計經(jīng)驗積累和先進(jìn)的技術(shù)手段的運用，橋梁設(shè)計者們又進(jìn)一步創(chuàng)新優(yōu)化結(jié)構(gòu)體系，使得矮塔斜拉橋在跨徑、寬度指標(biāo)等各方面不斷刷新突破。在我國，由于人口密集，，城市道路普遍都很寬，為了更好的結(jié)合城市道路的發(fā)展，矮塔斜拉橋也是越來越寬，已修建的矮塔斜拉橋平均寬度都在30m以上，寬幅的矮塔斜拉橋占據(jù)了絕對的主導(dǎo)地位。雖說在國內(nèi)寬幅矮塔斜拉橋得到了很大的發(fā)展，且結(jié)構(gòu)整體內(nèi)力分布特點也都是大家非常熟悉的，但是在某些局部位置應(yīng)力分布仍然不甚清晰，如全橋主梁的0號塊，不但其自身構(gòu)造復(fù)雜，而且其作用荷載也是十分多變的，在設(shè)計時比較難以把握；同時寬幅矮塔斜拉橋很寬的橋面使得其主梁結(jié)構(gòu)通常采用多室箱梁，在外荷載作用下將產(chǎn)生應(yīng)力分布不均現(xiàn)象，尤其是在拉索的作用下，分布不均現(xiàn)象更是十分嚴(yán)重；此外在施工監(jiān)控中也有部分影響到全橋受力安全的關(guān)鍵技術(shù)，且暫時未得到廣泛運用。針對以上情況，本文詳細(xì)總結(jié)了寬幅矮塔斜拉橋在設(shè)計、施工監(jiān)控中的部分關(guān)鍵技術(shù)及其研究方法，并以潁河矮塔斜拉橋為工程背景，首先運用橋梁博士3.1.0桿系有限元模型詳細(xì)的分析了潁河大橋的整體受力特性，隨后結(jié)合ANSYS12.0空間實體有限元軟件分析了潁河大橋0號塊在體系變換前、后的應(yīng)力變化及成橋階段的應(yīng)力分布特點，最后在潁河大橋標(biāo)準(zhǔn)截面的基礎(chǔ)上稍作修改，運用對稱性原理建立了整個懸臂段的ANSYS實體模型，并結(jié)合運用MIDAS/CIVIL2010建立的桿系模型對比分析了主梁結(jié)構(gòu)的剪力滯效應(yīng)及其縱向位移函數(shù)，全文對于此類橋型的設(shè)計、施工監(jiān)控以及多室箱梁的剪力滯效應(yīng)理論研究均具有一定的參考意義。
[Abstract]:As a new type of bridge structure, the low tower cable-stayed bridge has been developed for only 30 years, but its development is in the form of structure. With the accumulation of rich design experience and the application of advanced technical means, bridge designers have further innovated and optimized the structure system to make the cable-stayed bridge with low tower in the span. In our country, due to the population density, urban roads are generally very wide, in order to better integrate the development of urban roads, the low tower cable-stayed bridges are becoming wider and wider. The average width of all the cable-stayed bridges with low towers has been over 30m, and the cable-stayed bridges with wide pylon have occupied an absolute dominant position. Although the cable-stayed bridges with wide pylon have been greatly developed in China, The internal force distribution of the whole structure is also very familiar, but the stress distribution is still not very clear at some local locations. For example, block 0 of the main girder of the whole bridge is not only complicated in its own structure, but also very changeable in its action load. At the same time, the wide width and short tower cable-stayed bridge has very wide deck, which makes the main girder structure usually use multi-chamber box girder, and the stress distribution will be uneven under the external load, especially under the action of cable. The phenomenon of uneven distribution is very serious, in addition, there are some key technologies which affect the safety of the whole bridge in construction monitoring, and have not been widely used for the time being. In view of the above situation, this paper summarizes in detail the design of the cable-stayed bridge with wide and low pylon. Some key techniques and their research methods in construction monitoring and control are discussed. Taking Yinghe low Tower Cable-Stayed Bridge as the engineering background, firstly, the integral mechanical characteristics of Yinghe Bridge are analyzed in detail by using the finite element model of the bridge's PhD 3.1.0 bar system. Then, the stress change and stress distribution in the completion stage of Yinghe Bridge block 0 before and after the system transformation are analyzed by using ANSYS12.0 spatial entity finite element software. Finally, a slight modification is made on the basis of the standard section of Yinghe Bridge. The ANSYS solid model of the whole cantilever section is established by using the symmetry principle, and the shear lag effect and the longitudinal displacement function of the main beam structure are compared and analyzed by using the bar system model established by MIDAS/CIVIL2010. In this paper, the design of this kind of bridge is presented. Construction monitoring and theoretical study of shear lag effect of multi-chamber box girder have certain reference significance.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U448.27

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李小珍,蔡婧,強(qiáng)士中;大跨度鋼箱梁斜拉橋索梁錨固結(jié)構(gòu)型式的比較[J];工程力學(xué);2004年06期

2 張宏偉,鄭海東,鄭一峰;部分斜拉橋構(gòu)造設(shè)計[J];公路;2005年05期

3 鄭一峰,黃僑,張連振;部分斜拉橋結(jié)構(gòu)體系分析[J];公路;2005年06期

4 彭衛(wèi)國;崔鐵萬;朱孟君;;荷麻溪大橋部分斜拉橋設(shè)計[J];公路;2007年05期

5 周偉;蔣益飛;;斜拉橋最大雙懸臂施工階段主梁剪力滯效應(yīng)分析[J];公路;2008年06期

6 鄭一峰,黃僑,張宏偉;部分斜拉橋的概念設(shè)計[J];公路交通科技;2005年07期

7 嚴(yán)國敏;日本木曾川橋──主跨275m的4塔混合梁部分斜拉橋[J];國外橋梁;1997年02期

8 陳從春;周海智;肖汝誠;;矮塔斜拉橋研究的新進(jìn)展[J];世界橋梁;2006年01期

9 堯云濤;肖汝誠;;寬箱梁獨塔斜拉橋主梁正應(yīng)力不均勻分布研究[J];結(jié)構(gòu)工程師;2006年05期

10 雷濤;李粉玲;陳暉;;論矮塔斜拉橋受力性能與發(fā)展前景[J];山西建筑;2012年03期

本文編號：1546839