發(fā)布時間：2018-11-12 14:56

【摘要】：改革開放以來,我國交通現(xiàn)代化進程日益加快,規(guī)劃興建了眾多大型水利工程建設(shè)項目和橋梁工程建設(shè)項目,這些工程為改善地方交通起到了重要作用。然而一些偏遠地區(qū)因自然條件惡劣,如水域難以跨越等原因仍處于交通不便狀態(tài),因此,研究跨庫區(qū)、跨水域的深水橋梁的設(shè)計與施工具有重要的實踐意義。本文依托雅礱江兩河口水電站庫區(qū)復(fù)建壩前跨庫大橋?qū)ｍ椆こ?開展了對庫區(qū)高墩大跨連續(xù)剛構(gòu)橋的設(shè)計與施工研究。兩河口跨庫大橋位于兩河口水電站水庫內(nèi),是銜接兩條復(fù)建縣道的重要干線樞紐,在庫區(qū)復(fù)建交通網(wǎng)絡(luò)及庫周交通網(wǎng)絡(luò)中都有著舉足輕重的作用。論文首先對高墩大跨連續(xù)剛構(gòu)橋的國內(nèi)外研究現(xiàn)狀進行了分析,對兩河口跨庫大橋設(shè)計中遇到的典型庫區(qū)水環(huán)境的影響問題進行了分析,對庫區(qū)橋梁環(huán)境的特殊性、庫區(qū)橋梁設(shè)計中應(yīng)注意的問題進行了討論。運用橋梁結(jié)構(gòu)分析的有限元理論,對高墩大跨連續(xù)剛構(gòu)橋設(shè)計中的靜動力行為進行了分析,對墩身施工和連續(xù)主梁施工臨時支架工藝技術(shù)方案等問題進行了研究,采用MIDAS/CIVIL 2012進行相應(yīng)結(jié)構(gòu)實體模型分析,設(shè)計了臨時支撐方案。論文著重介紹了庫區(qū)高墩大跨連續(xù)剛構(gòu)橋的設(shè)計與施工方法,為其它相似工程提供借鑒。
[Abstract]:Since the reform and opening up, the process of traffic modernization in China has been speeding up day by day. Many large water conservancy projects and bridge construction projects have been planned and built. These projects have played an important role in improving local transportation. However, some remote areas are still in the state of traffic inconvenience because of the bad natural conditions, such as the difficulty of crossing the water area. Therefore, it is of great practical significance to study the design and construction of deep water bridges across the reservoir area and across the water area. In this paper, the design and construction of continuous rigid frame bridge with high piers and large spans in the reservoir area are studied on the basis of the special project of the large span bridge before rebuilding dam in the reservoir area of Lianghekou Hydropower Station of Yalong River. The Liangkou River Crossing Bridge is located in the reservoir of Lianghekou Hydropower Station. It is an important trunk link between the two restored county roads and plays an important role in the reconstruction traffic network and the traffic network around the reservoir area. In this paper, the current research situation of long-span continuous rigid frame bridge with high piers at home and abroad is analyzed, and the influence problems of water environment in the typical reservoir area in the design of Lianghekou Bridge are analyzed, and the particularity of bridge environment in the reservoir area is analyzed. The problems that should be paid attention to in the design of bridges in the reservoir area are discussed. Based on the finite element theory of bridge structure analysis, the static and dynamic behavior of long-span continuous rigid frame bridge with high piers is analyzed, and the technical scheme of temporary support for pier construction and continuous main beam construction is studied. MIDAS/CIVIL 2012 is used to analyze the corresponding structural entity model, and the temporary support scheme is designed. This paper mainly introduces the design and construction method of long span continuous rigid frame bridge with high piers in reservoir area, which provides reference for other similar projects.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U448.23;U445.4

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