【摘要】：目前，國內(nèi)橋梁的建設(shè)逐步由陸上高等級公路建設(shè)轉(zhuǎn)移到一些跨江、跨海工程，甚至是一些連島工程建設(shè)當(dāng)中，多跨長聯(lián)預(yù)應(yīng)力混凝土連續(xù)剛構(gòu)橋憑借自身的獨特優(yōu)勢，應(yīng)用的愈加廣泛而且形式多樣。有些因地形或社會環(huán)境限制而不得不選擇大邊跨長聯(lián)結(jié)構(gòu)來設(shè)計通過。而國內(nèi)對此類非常規(guī)橋梁的應(yīng)研究較少而且不夠系統(tǒng)。而且公路橋涵設(shè)計通用規(guī)范中對有些控制條件也沒有明確給出。所以有必要對長邊跨長聯(lián)預(yù)應(yīng)力連續(xù)剛構(gòu)橋進行設(shè)計及施工關(guān)鍵階段的系統(tǒng)研究。 本文在系統(tǒng)學(xué)習(xí)國內(nèi)外研究成果的前提下，結(jié)合鄭州桃花峪黃河大橋的副橋建設(shè)，通過對結(jié)構(gòu)的關(guān)鍵受力性能及社會效益進行對比分析，明確超長邊跨現(xiàn)澆段最佳設(shè)計方案，該研究成果可用于類似超長邊跨現(xiàn)澆段主梁設(shè)計；通過對成橋狀態(tài)下不同合龍順序時結(jié)構(gòu)的受力及線形進行對比分析，，明確常規(guī)橋梁合龍方案及并比較分析各種方案的優(yōu)缺點，該研究過程及結(jié)果可用于多跨預(yù)應(yīng)力連續(xù)剛構(gòu)的綜合合龍；對結(jié)構(gòu)關(guān)鍵施工階段穩(wěn)定性能進行了對比分析，該研究成果可為本橋梁的施工過程提供參考，同時也可以豐富和完善結(jié)構(gòu)的穩(wěn)定性能的基礎(chǔ)研究。 本項目的研究成果在桃花峪黃河大橋設(shè)計和施工中得到了實際應(yīng)用，對于施工成本節(jié)約、工期要求、施工過程中的穩(wěn)定性及成橋使用性能效果非常顯著。對武西高速桃花峪黃河大橋及其他類似橋梁都可提供參考和指導(dǎo)意義。
[Abstract]:At present, the construction of bridges in China is gradually transferred from the construction of high grade highways on land to some projects across rivers and seas, and even among the construction of some projects connected with islands. The multi-span long-span prestressed concrete continuous rigid frame bridges rely on their own unique advantages. It is used more widely and in various forms. Some have to choose long-span structures to design and pass because of terrain or social environment constraints. However, the domestic research on this kind of unconventional bridges is less and less systematic. And some control conditions are not clearly given in the general specification for highway bridge and culvert design. So it is necessary to study the key stage of design and construction of long span prestressed continuous rigid frame bridge. On the premise of systematically studying the domestic and foreign research results, combined with the construction of auxiliary bridge of Zhengzhou Taohuayu Yellow River Bridge, this paper compares and analyzes the key mechanical properties and social benefits of the structure, and defines the optimum design scheme of the super-long side span cast-in-place section. The research results can be used in the design of cast-in-situ girder with super long side span. By comparing and analyzing the force and line shape of the structure under the different closing sequence, the conventional bridge closure scheme and the advantages and disadvantages of the various schemes are compared and analyzed. The research process and results can be applied to the comprehensive closure of multi-span prestressed continuous rigid frame. The stability performance of the key construction stage of the structure is compared and analyzed. The research results can provide a reference for the construction process of the bridge and enrich and perfect the basic research on the stability performance of the structure. The research results of this project have been applied in the design and construction of Taohuayu Yellow River Bridge. It is very effective to save the construction cost, the requirements of the construction period, the stability during the construction process and the performance of the completed bridge. It can provide reference and guidance for Taohuayu Yellow River Bridge and other similar bridges.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U445.4

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