本文選題：海港工程　切入點：鋼筋混凝土　出處：《浙江大學》2014年碩士論文

【摘要】：許多上世紀建造的海港高樁碼頭,其使用年限在遠未達到結構設計使用年限的情況下,鋼筋混凝土結構就發(fā)生了不同程度腐蝕損壞現象,輕者,混凝土表面產生大量銹斑、保護層混凝土開裂、鋼筋銹蝕；重者,保護層混凝土脫落、鋼筋截面變細甚至銹斷,最終導致結構失效。為確保碼頭的結構安全、延長其使用年限,無論是主管部門還是碼頭使用方都對海港高樁碼頭鋼筋混凝土結構的耐久性檢測評估和修復提出了迫切的需求。 本文闡述了南方沿海高樁碼頭鋼筋混凝土結構腐蝕損壞的現狀以及鋼筋銹蝕損壞的過程,討論了碼頭結構耐久性檢測項目和評估方法,重點闡述氯離子滲透混凝土的機理、導致影響結構剩余使用年限的氯離子擴散系數計算方法及其與混凝土表面氯離子濃度的選取、環(huán)境氯離子濃度的確定、保護層厚度和混凝土強度之間的關系,得出了海港鋼筋混凝土結構受氯離子侵蝕后結構腐蝕損壞直至結構失效的使用年限計算過程,并成功應用于舟山海域某電廠高樁碼頭的耐久性檢測評估,取得了明顯效果。同時,對目前國內沿海高樁碼頭結構耐久性檢測評估的內容和方法進行了研究,得出了以耐久性檢測評估為主的“事前控制”碼頭維護制度。 此外,將海港高樁碼頭鋼筋混凝土腐蝕損壞的修復方法進行了對比和總結,在哲學和管理學的理論基礎上,提出了基于全局觀的鋼筋混凝土結構修復思路,成功應用于舟山海域某電廠高樁碼頭的修復工程,使碼頭使用年限明顯提高。
[Abstract]:Many harbour high pile wharves built in the last century, whose service life is far from the design life of the structure, corrosion and damage of reinforced concrete structure to varying degrees, light, concrete surface produced a large number of rust spots. In order to ensure the safety of the structure of the wharf and prolong its service life, the concrete of the protective layer is cracked, the steel bar is corroded, the concrete of the cover layer falls off, the section of the steel bar becomes thin and even rusts break, which leads to the failure of the structure. Both the competent authorities and the wharf users have put forward an urgent need for durability evaluation and repair of reinforced concrete structure of high pile wharf. In this paper, the present situation of corrosion damage of reinforced concrete structure of high pile wharf in southern coastal area and the process of corrosion damage of reinforcing steel bar are described. The durability detection items and evaluation methods of wharf structure are discussed, and the mechanism of chloride ion permeating concrete is emphasized. The calculation method of chloride diffusion coefficient which affects the remaining service life of the structure and its relationship with the selection of chloride ion concentration on the surface of concrete, the determination of environmental chloride ion concentration, the thickness of protective layer and the strength of concrete are discussed. The calculation process of the service life of the reinforced concrete structure after chloride ion erosion is obtained, and it is successfully applied to the durability evaluation of the high pile wharf of a power plant in Zhoushan sea area. At the same time, the contents and methods of durability test and evaluation of domestic coastal high-pile wharf structure are studied, and the maintenance system of "pre-control" wharf based on durability inspection and evaluation is obtained. In addition, the paper compares and summarizes the methods of repairing the corrosion damage of reinforced concrete in port wharf, and puts forward the idea of repairing reinforced concrete structure based on the overall view on the basis of philosophy and management theory. It has been successfully applied to the restoration of the high pile wharf in a power plant in Zhoushan sea area, and the service life of the wharf has been improved obviously.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U656.113

【參考文獻】

相關期刊論文 前8條

1 田俊峰,潘德強,趙尚傳;海工高性能混凝土抗氯離子侵蝕耐久壽命預測[J];中國港灣建設;2002年02期

2 孟艷秋,田大作;灌漿法在水工混凝土加固補強技術中的應用[J];海河水利;2004年01期

3 汪魁峰;郭海軍;;粘鋼加固技術在水利工程中的應用[J];吉林水利;2006年09期

4 尤林賢;鐘惠鈺;;粘鋼加固技術在水利工程中的應用[J];水利建設與管理;2007年02期

5 吳畏,范衛(wèi)國;海港碼頭鋼筋混凝土結構腐蝕破壞與維護方案淺析[J];水運工程;2000年07期

6 王友元;蘇林王;李國豹;;碳纖維加固對海工鋼筋混凝土結構銹脹的約束作用研究[J];水運工程;2009年10期

7 翁友法;時蓓玲;朱光裕;;某高樁碼頭的荷載試驗和承載力評估[J];水運工程;2010年01期

8 周保勝,湯洋;碳纖維復合材料加固修復混凝土結構技術在水利工程中的應用[J];治淮;2005年11期

，

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