寒冷地區(qū)海洋環(huán)境預應力混凝土橋梁施工關鍵技術研究
發(fā)布時間：2018-12-24 14:03
【摘要】：寒冷地區(qū)海洋環(huán)境下惡劣的自然條件,如地質情況復雜、潮汐變化大、水深流急、浪高風大、海水侵蝕凍融作用、地下水和土層腐蝕作用,為橋梁的施工帶來不小的挑戰(zhàn)。論文依托位于唐山地區(qū)的青龍河大橋和納潮河2號大橋,對預應力混凝土橋梁施工關鍵技術展開了研究。(1)海洋環(huán)境下大型鋼棧橋施工技術研究:結合青龍河大橋和納潮河2號大橋工程的特點和所處自然環(huán)境,分析了鋼棧橋使用必要性以及施工的重難點,對相應的施工方法及工程應用效果進行研究總結,并對未來跨海橋梁的鋼棧橋施工技術進一步研究提出建議。(2)寒冷地區(qū)海洋環(huán)境超長鉆孔灌注樁施工技術研究:結合納潮河2號大橋的工程特點和所處自然環(huán)境,分析了鉆孔灌注樁使用必要性以及施工的重難點,對相應的施工方法及工程應用效果進行研究總結,并對未來跨海橋梁的鉆孔灌注樁施工技術進一步研究提出建議。(3)寒冷地區(qū)海洋環(huán)境大體積承臺鋼吊箱施工技術研究:結合納潮河2號大橋的工程特點和所處自然環(huán)境,分析了鋼吊箱圍堰使用必要性以及大體積承臺鋼吊箱圍堰施工的重難點,對相應的施工方法及工程應用效果進行研究總結,并對未來跨海橋梁的承臺鋼吊箱圍堰施工技術進一步研究提出建議。(4)吹砂圍堰施工技術研究:結合納潮河2號大橋的工程特點和所處的自然環(huán)境,分析了吹砂圍堰使用的必要性以及吹砂圍堰施工的重難點,對相應的施工方法及工程應用效果進行研究總結,并對吹砂圍堰施工技術進一步研究提出建議。論文將寒冷地區(qū)海洋環(huán)境的施工關鍵技術系統(tǒng)化,形成了具有地域特色的成套施工關鍵技術,研究成果對青龍河大橋和納潮河2號大橋的施工具有積極的指導意義,可為類似海洋環(huán)境橋梁施工提供技術支持和借鑒,對我國跨海橋梁施工技術進行完善和補充。
[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.
【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】：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.
【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】：U445.4
【參考文獻】
相關期刊論文 前10條
1 宋們;段軍朝;王f塘，
本文編號：2390719
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