發(fā)布時間：2019-02-17 07:46

【摘要】：本文以港珠澳大橋淺水區(qū)非通航85m鋼-混凝土組合連續(xù)箱梁橋為背景和依托,著眼于鋼-混凝土組合連續(xù)箱梁橋的施工控制技術(shù),通過有限元軟件模擬及現(xiàn)場實際監(jiān)控,對采取簡支變連續(xù)施工工藝的鋼-混凝土組合箱梁橋的幾何線形控制和整體安裝控制進行了分析和探討,具體內(nèi)容如下:①對鋼-混凝土組合連續(xù)箱梁橋幾何線形控制方法、原則及要點進行了探討,重點分析不同焊接加工工藝對組合梁鋼主梁制造線形控制的影響。②結(jié)合有限元模型及實際監(jiān)測結(jié)果,對非對稱組合截面形式的鋼-混組合箱梁存在的彎扭耦合效應(yīng)進行了分析,并研究了其對鋼-混組合連續(xù)箱梁橋整體縱向線形控制的影響以及其對橋面橫坡設(shè)置的影響。③通過有限元空間精細(xì)化模型,模擬分析了施工臨時荷載對簡支狀態(tài)鋼-混組合箱梁的線形撓度影響及關(guān)鍵構(gòu)件的應(yīng)力影響。建立整體全橋模型,分析了施工臨時荷載對成橋線形的影響。④介紹了鋼-混凝土組合連續(xù)箱梁海上整孔吊裝架設(shè)、簡支變連續(xù)的施工工藝,分析了鋼混組合箱梁大節(jié)段對接配切控制的關(guān)鍵影響因素及控制方法,研究了該類橋梁鉛芯橡膠支座或高阻尼橡膠支座安裝及預(yù)偏的自適應(yīng)控制方法。對目前該類橋梁采取的現(xiàn)場配切技術(shù)優(yōu)、缺點進行了探討,分析了實現(xiàn)工廠化配切的可能性。本文對跨海整孔架設(shè)、簡支變連續(xù)施工的鋼-混凝土組合連續(xù)箱梁橋施工控制的關(guān)鍵技術(shù)進行了較為詳細(xì)的分析和研究,對以后類似橋梁的施工控制具有借鑒、參考和指導(dǎo)意義。
[Abstract]:Based on the non-navigable 85m steel-concrete continuous box girder bridge in shallow water area of HongKong-Zhuhai-Macao Bridge, this paper focuses on the construction control technology of the steel-concrete composite continuous box girder bridge, through finite element software simulation and field monitoring. The geometric alignment control and integral installation control of steel-concrete composite box girder bridge with simple support and variable continuous construction technology are analyzed and discussed. The specific contents are as follows: 1 the geometric alignment control method of steel-concrete composite box girder bridge is introduced. The principle and key points are discussed, and the influence of different welding processes on the alignment control of the steel main beam of composite beam is analyzed. 2 combined with the finite element model and the actual monitoring results, The bending and torsional coupling effects of steel-concrete composite box girder with asymmetric composite section are analyzed. The influence on the overall longitudinal alignment control of steel-concrete continuous box girder bridge and its influence on the arrangement of transverse slope of bridge deck are also studied. 3 through the finite-element spatial refinement model, The influence of temporary construction load on the linear deflection of simply supported steel-mixed composite box girder and the stress effect of key components are simulated and analyzed. The model of the whole bridge is established and the influence of the temporary load on the alignment of the bridge is analyzed. 4 the construction technology of hoisting and erecting the whole hole in the sea with the simple support and changing the continuity of the steel and concrete composite continuous box girder is introduced. In this paper, the key factors and control methods of large segment docking and cutting control of steel-concrete composite box girder are analyzed, and the self-adaptive control method for installation and pre-deviation of lead-core rubber bearing or high-damping rubber bearing of this kind of bridge is studied. This paper probes into the advantages and disadvantages of the field matching and cutting technology adopted by this kind of bridge at present, and analyzes the possibility of realizing the factory cutting. In this paper, the key technology of construction control of steel-concrete composite continuous box-girder bridge, which is set up by the whole hole across the sea and changed from simple support to continuous construction, is analyzed and studied in detail, which can be used for reference for the construction control of similar bridges in the future. Reference and guidance significance.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U445.4

【參考文獻】

相關(guān)博士學(xué)位論文 前2條

1 盧彭真;鋼—混凝土組合箱梁空間分析理論與應(yīng)用研究[D];西南交通大學(xué);2010年

2 林建平;考慮界面非連續(xù)變形的鋼—混凝土組合梁橋數(shù)值模擬研究[D];浙江大學(xué);2014年

相關(guān)碩士學(xué)位論文 前1條

1 賈棟;基于幾何控制法的結(jié)合梁斜拉橋主梁制造線形控制[D];西南交通大學(xué);2009年

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本文編號：2424918