寒冷地区海洋环境预应力混凝土桥梁施工关键技术研究
发布时间：2018-12-24 14:03
【摘要】：寒冷地区海洋环境下恶劣的自然条件,如地质情况复杂、潮汐变化大、水深流急、浪高风大、海水侵蚀冻融作用、地下水和土层腐蚀作用,为桥梁的施工带来不小的挑战。论文依托位于唐山地区的青龙河大桥和纳潮河2号大桥,对预应力混凝土桥梁施工关键技术展开了研究。(1)海洋环境下大型钢栈桥施工技术研究:结合青龙河大桥和纳潮河2号大桥工程的特点和所处自然环境,分析了钢栈桥使用必要性以及施工的重难点,对相应的施工方法及工程应用效果进行研究总结,并对未来跨海桥梁的钢栈桥施工技术进一步研究提出建议。(2)寒冷地区海洋环境超长钻孔灌注桩施工技术研究:结合纳潮河2号大桥的工程特点和所处自然环境,分析了钻孔灌注桩使用必要性以及施工的重难点,对相应的施工方法及工程应用效果进行研究总结,并对未来跨海桥梁的钻孔灌注桩施工技术进一步研究提出建议。(3)寒冷地区海洋环境大体积承台钢吊箱施工技术研究:结合纳潮河2号大桥的工程特点和所处自然环境,分析了钢吊箱围堰使用必要性以及大体积承台钢吊箱围堰施工的重难点,对相应的施工方法及工程应用效果进行研究总结,并对未来跨海桥梁的承台钢吊箱围堰施工技术进一步研究提出建议。(4)吹砂围堰施工技术研究:结合纳潮河2号大桥的工程特点和所处的自然环境,分析了吹砂围堰使用的必要性以及吹砂围堰施工的重难点,对相应的施工方法及工程应用效果进行研究总结,并对吹砂围堰施工技术进一步研究提出建议。论文将寒冷地区海洋环境的施工关键技术系统化,形成了具有地域特色的成套施工关键技术,研究成果对青龙河大桥和纳潮河2号大桥的施工具有积极的指导意义,可为类似海洋环境桥梁施工提供技术支持和借鉴,对我国跨海桥梁施工技术进行完善和补充。
[Abstract]:The harsh natural conditions in the cold marine environment, such as complicated geological conditions, large tidal changes, rapid water depth, high wave height and wind, sea water erosion, freezing and thawing, groundwater and soil erosion, bring great challenges to the construction of bridges. The thesis relies on Qinglong River Bridge and Nachaohe No. 2 Bridge located in Tangshan area. The key technology of prestressed concrete bridge construction is studied. (1) the construction technology of large steel trestle bridge under marine environment: combined with the characteristics and natural environment of Qinglong River Bridge and Nachaohe No. 2 Bridge, This paper analyzes on the necessity of using steel trestle bridge and the heavy and difficult points in construction, studies and summarizes the corresponding construction methods and engineering application effects. Further research on the construction technology of steel trestle bridge for future sea crossing bridge is put forward. (2) study on construction technology of super-long bored cast-in-place pile in cold marine environment: combined with the engineering characteristics and natural environment of Nachaohe No. 2 Bridge. This paper analyzes on the necessity of using bored cast-in-place piles and the heavy and difficult points in construction, studies and summarizes the corresponding construction methods and engineering application effects. Further research on construction technology of bored cast-in-place piles for future sea crossing bridges is put forward. (3) study on construction technology of large volume steel caps in cold marine environment: combined with the engineering characteristics and natural environment of Naichaohe No. 2 Bridge. This paper analyzes on the necessity of using steel hoisting box cofferdam and the heavy and difficult points in the construction of steel box cofferdam with large bearing cap, and studies and summarizes the corresponding construction methods and engineering application effects. Furthermore, some suggestions are put forward for further study on the construction technology of steel cofferdam with steel suspension box for future sea crossing bridges. (4) study on construction technology of sand blowing cofferdam: combined with the engineering characteristics and the natural environment of Nachaohe No. 2 Bridge, This paper analyzes on the necessity of sand blowing cofferdam and the difficulties of sand blowing cofferdam construction, studies and summarizes the corresponding construction methods and engineering application effects, and puts forward some suggestions for further research on sand blowing cofferdam construction technology. The paper systematizes the key construction technology of the marine environment in the cold area and forms a complete set of key construction technologies with regional characteristics. The research results have positive guiding significance for the construction of Qinglong River Bridge and Nachaohe No. 2 Bridge. It can provide technical support and reference for similar marine environmental bridge construction, and perfect and supplement the construction technology of cross-sea bridge in our country.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U445.4
[Abstract]:The harsh natural conditions in the cold marine environment, such as complicated geological conditions, large tidal changes, rapid water depth, high wave height and wind, sea water erosion, freezing and thawing, groundwater and soil erosion, bring great challenges to the construction of bridges. The thesis relies on Qinglong River Bridge and Nachaohe No. 2 Bridge located in Tangshan area. The key technology of prestressed concrete bridge construction is studied. (1) the construction technology of large steel trestle bridge under marine environment: combined with the characteristics and natural environment of Qinglong River Bridge and Nachaohe No. 2 Bridge, This paper analyzes on the necessity of using steel trestle bridge and the heavy and difficult points in construction, studies and summarizes the corresponding construction methods and engineering application effects. Further research on the construction technology of steel trestle bridge for future sea crossing bridge is put forward. (2) study on construction technology of super-long bored cast-in-place pile in cold marine environment: combined with the engineering characteristics and natural environment of Nachaohe No. 2 Bridge. This paper analyzes on the necessity of using bored cast-in-place piles and the heavy and difficult points in construction, studies and summarizes the corresponding construction methods and engineering application effects. Further research on construction technology of bored cast-in-place piles for future sea crossing bridges is put forward. (3) study on construction technology of large volume steel caps in cold marine environment: combined with the engineering characteristics and natural environment of Naichaohe No. 2 Bridge. This paper analyzes on the necessity of using steel hoisting box cofferdam and the heavy and difficult points in the construction of steel box cofferdam with large bearing cap, and studies and summarizes the corresponding construction methods and engineering application effects. Furthermore, some suggestions are put forward for further study on the construction technology of steel cofferdam with steel suspension box for future sea crossing bridges. (4) study on construction technology of sand blowing cofferdam: combined with the engineering characteristics and the natural environment of Nachaohe No. 2 Bridge, This paper analyzes on the necessity of sand blowing cofferdam and the difficulties of sand blowing cofferdam construction, studies and summarizes the corresponding construction methods and engineering application effects, and puts forward some suggestions for further research on sand blowing cofferdam construction technology. The paper systematizes the key construction technology of the marine environment in the cold area and forms a complete set of key construction technologies with regional characteristics. The research results have positive guiding significance for the construction of Qinglong River Bridge and Nachaohe No. 2 Bridge. It can provide technical support and reference for similar marine environmental bridge construction, and perfect and supplement the construction technology of cross-sea bridge in our country.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U445.4
【参考文献】
相关期刊论文 前10条
1 宋們;段军朝;王f塘，
本文编号：2390719
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