【摘要】：本論文依托大連星海灣跨海大橋西引橋,全面研究了外海預應力混凝土雙層橋梁主體工程施工和臨時工程的設計施工的關鍵技術,分析相關技術的原理,研究施工方法,并總結相關經(jīng)驗。第一章,分析總結了近年來國內(nèi)外跨海大橋、雙層橋梁和跨海雙層橋梁的發(fā)展概況,并介紹了我國首座跨海雙層公路橋,即大連星海灣大橋的項目背景、技術難點、選定課題研究內(nèi)容和研究技術路線；第二章,研究我國最長的裸巖區(qū)跨海橋梁臨時棧橋的設計和施工關鍵技術,通過經(jīng)濟比選,選取最合理的設計方案、研究主要參數(shù)的取值、利用有限元分析結構的受力情況和整體穩(wěn)定性,最后研發(fā)三種裸巖區(qū)鋼管樁施工工法,并成功實踐,全面總結了外海裸巖區(qū)棧橋的設計和施工關鍵技術；第三章,研究海上巖溶地區(qū)樁基的施工關鍵技術,重點探索海上裸巖區(qū)鋼護筒沉放的施工方法,并推導了海水造漿液面高度的數(shù)學計算公式,為不同土質樁基施工造漿的液面高度提供計算原理；第四章,研究了海上高樁沒水承臺鋼吊箱的設計施工關鍵技術,通過方案比選,選定合理結構,研究鋼吊箱設計計算的參數(shù)取值,并利用有限元進行鋼吊箱結構靜力分析和動力時程分析,探索鋼吊箱結構的受力機理和模態(tài),研究了適合外海大風浪高樁承臺的鋼吊箱施工關鍵技術；第五章,研究了外海雙層橋梁的上部結構施工關鍵技術,重點探索下墩柱、下橫梁、上橫梁、雙層箱梁的施工關鍵技術和支撐結構體系,并選取大型施工船機。通過以上內(nèi)容的研究,對外海雙層橋梁施工的關鍵技術進行全面總結,為類似工程提供參考。
[Abstract]:Based on the west approach bridge of Dalian Xinghai Bay Bridge, this paper studies the key technology of the construction of the main body of the prestressed concrete bridge and the design and construction of the temporary project, analyzes the principle of the related technology, and studies the construction method. And summarize the relevant experience. In the first chapter, the development situation of sea crossing bridge, double deck bridge and cross sea double deck bridge at home and abroad are analyzed and summarized, and the project background and technical difficulties of the first cross sea double deck highway bridge, namely Dalian Xinghai Bay Bridge, are introduced. In the second chapter, the key technology of the design and construction of the bridge temporary trestle bridge across the sea in the longest bare rock area in China is studied. Through economic comparison, the most reasonable design scheme is selected, and the value of the main parameters is studied. Based on the finite element analysis of the stress and overall stability of the structure, three construction methods of steel pipe pile in bare rock area are developed, and the key techniques of design and construction of the trestle bridge in the open sea bare rock area are summarized. The key technology of pile foundation construction in karst area at sea is studied, the construction method of steel retaining tube sinking in bare rock area is explored, and the mathematical calculation formula of the height of sea water slurry surface is deduced. In chapter 4, the key technology of design and construction of steel hanging box with high pile and no water bearing cap is studied, and the reasonable structure is selected by comparison and selection of schemes. The parameters of the design and calculation of the steel suspension box are studied, and the static analysis and dynamic time history analysis of the steel suspension box structure are carried out by using finite element method, and the stress mechanism and mode of the steel suspension box structure are explored. In chapter 5, the key construction technology of the superstructure of the offshore double-deck bridge is studied, with emphasis on the exploration of the lower pier column, the lower crossbeam, the upper crossbeam, the lower pier column, the lower crossbeam, the upper crossbeam, the lower pier column, the lower crossbeam, the upper crossbeam, the lower pier column, the lower crossbeam and the upper crossbeam. The key construction technology and supporting structure system of double-deck box girder are selected, and large-scale construction ship machine is selected. Through the above research, the key technology of the construction of the external sea double-deck bridge is summarized in an all-round way, which provides a reference for similar projects.
【學位授予單位】：大連理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U445.4

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本文編號：2248494