本文選題：獨(dú)塔斜拉橋 + 懸臂施工法　； 參考：《合肥工業(yè)大學(xué)》2014年碩士論文

【摘要】：隨著橋梁研究理論的發(fā)展和工程實(shí)際的需要,我國大跨徑橋梁的設(shè)計(jì)和施工技術(shù)已經(jīng)步入到一個(gè)嶄新的階段，目前我國已經(jīng)建造了包括懸索橋、斜拉橋在內(nèi)的大量大跨徑橋梁。作為大跨度橋梁懸臂施工中的關(guān)鍵設(shè)備,掛籃也在進(jìn)行著不斷的發(fā)展和創(chuàng)新；當(dāng)今新型掛籃的要求比傳統(tǒng)掛籃要高，要求其更加移動(dòng)靈活輕型化、裝拆方便、穩(wěn)定性好、安全性能高、變形小等。 本文首先回顧了國內(nèi)外斜拉橋及其施工方法的發(fā)展和現(xiàn)狀，重點(diǎn)闡述了新型掛籃——牽索掛籃的原理和特點(diǎn)。然后，以渦河三橋——水滴型鋼混組合塔獨(dú)塔斜拉橋作為工程背景，采用MIDAS/CIVIL有限元程序建立了渦河三橋全橋有限元模型，探析了掛籃自重大小對(duì)懸澆橋梁施工階段受力特性的影響，詳細(xì)對(duì)比分析了在不同掛籃自重比（掛籃重量與標(biāo)準(zhǔn)梁段重量比）下的懸澆橋梁結(jié)構(gòu)在不同施工階段的截面應(yīng)力和結(jié)構(gòu)位移的變化情況，并分析計(jì)算得出該工程中所使用牽索掛籃自重取值的合理范圍；隨后，建立了該工程背景中的牽索掛籃有限元模型，并對(duì)該掛籃的主體結(jié)構(gòu)構(gòu)件進(jìn)行了計(jì)算分析；最后，，以掛籃自重對(duì)橋梁主梁的影響以及掛籃主體構(gòu)件的計(jì)算結(jié)果為原則，對(duì)本工程的牽索掛籃的主體結(jié)構(gòu)構(gòu)件進(jìn)行了輕型化設(shè)計(jì)，以便更加合理地確定渦河三橋施工掛籃的最終尺寸，為該橋的順利施工提供參考意見。研究結(jié)果表明，本文分析結(jié)果將對(duì)渦河三橋的現(xiàn)場(chǎng)施工監(jiān)測(cè)和控制工作有一定的幫助，同時(shí)也可為同類型橋梁的設(shè)計(jì)和施工提供了相關(guān)參考。
[Abstract]:With the development of bridge research theory and the need of engineering practice, the design and construction technology of long-span bridges in China has entered a new stage. At present, a large number of long-span bridges, including suspension bridges and cable-stayed bridges, have been built in China. As the key equipment in the cantilever construction of long-span bridges, the hanging basket is developing and innovating constantly, and the requirement of the new type of hanging basket is higher than that of the traditional hanging basket, which requires it to move more flexibly and light, to install and disassemble conveniently, and to have good stability. High safety performance, small deformation and so on. This paper first reviews the development and present situation of cable-stayed bridge and its construction methods at home and abroad, and expounds the principle and characteristics of a new type of cable-stayed bridge. Then, the finite element model of the whole bridge is established by using Midas / CIVIL finite element program, which is based on the engineering background of the third bridge of the Huohe River, which is composed of a steel concrete composite tower and a single tower cable-stayed bridge. In this paper, the influence of the weight of hanging basket on the mechanical characteristics of cantilever bridge in construction stage is analyzed. The variation of cross-section stress and structural displacement of cantilever bridge structure under different weight ratio of hanging basket weight to standard beam segment in different construction stage is compared and analyzed in detail. Then, the finite element model of the suspension basket in the background of the project is established, and the main structural components of the hanging basket are calculated and analyzed. Based on the influence of the weight of the basket on the main girder of the bridge and the calculation result of the main member of the hanging basket, the light design of the main structure of the cable hanging basket in this project is carried out. In order to more reasonably determine the final size of the construction basket for the construction of the third Bridge, and provide reference for the successful construction of the bridge. The results of the study show that the results of this paper will be helpful to the monitoring and control of the construction of the third Bridge, and can also provide some reference for the design and construction of the same type of bridges.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U448.27

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