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    题名: 鹽害橋梁評估及補強之探討-以台61線蘆竹路段高架橋為例;Discussion on Evaluation and Reinforcement of Salt Damage Bridge- Viaduct of Provincial Highway No. 61, Luzhu Dist.
    作者: 洪一民;HUNG, YI-MIN
    贡献者: 土木工程學系在職專班
    关键词: 氯鹽量;腐蝕劣化;鹽害對策;Chloride Concentration;Corrosion Degradation;Salt Damage Countermeasure
    日期: 2020-08-13
    上传时间: 2020-09-02 14:54:41 (UTC+8)
    出版者: 國立中央大學
    摘要: 臺灣地區氣候潮濕且高溫,尤其沿海大氣環境常因夾帶鹽分而侵襲構造物,極易發生鋼筋混凝土腐蝕劣化問題,可以說橋梁耐久性與環境腐蝕因子息息相關,因此面對鹽害橋梁如何延長使用壽命及其維護安全性,儼然成為世界各國重視的問題。
    橋梁腐蝕劣化的原因,除了大氣環境或外力損害等外在因素,內在因素如施工不良或材料不佳等,亦是評估腐蝕劣化重要之參考條件。因此本研究將探討大氣環境腐蝕因子,並透過橋梁目視檢測方式,以及運用橋梁局部破壞性及非破壞性等檢試驗,經由整體綜合評估,作為判斷劣化與成因之分析。
    鹽害橋梁劣化的過程,因不同劣化程度而有不同的階段,由於國內外常見橋梁鹽害劣化之修復方式,普遍採以表面防護、腐蝕抑制劑、斷面修復、電氣防蝕等工法之處置,故本研究將歸納比較維修補強工法之優劣,作為優選排序之參考,選擇出適當維修補強方案,落實延長橋梁耐久性與維護之安全性,期能回饋鹽害橋梁維修資料庫,健全橋梁生命週期之維護管理。
    ;The climate in Taiwan is humid and hot, the salt entrainment coastal atmospheric environment often erodes structures, the problem of corrosion and deterioration of reinforced concrete is very easy to happen.
    The durability of bridges is closely related to environmental corrosion factors, how to extend the service life and maintain the safety, of the salt damaged bridges has become a problem that needs attention.
    Poor construction, poor materials, atmospheric environment, or external damage may be the cause of bridge corrosion degradation. Through visual inspection, destructive and non-destructive inspection methods, a comprehensive evaluation of the analysis of deterioration and causes, this study explores the atmospheric environmental corrosion factors of the bridges.
    The process of deterioration of salt damaged bridges has different stages due to different degrees of deterioration, common ways of repairing bridge salt damage generally adopt construction methods such as surface protection, corrosion inhibitor, cross-section repair, electrical corrosion protection, etc.
    This study will summarize the advantages and disadvantages of the maintenance and reinforcement methods, and choose an appropriate maintenance and reinforcement plan, to extend the durability and maintenance safety of the bridge, and expect to feedback to the salt damage bridge maintenance database to improve the maintenance management of the bridge life cycle.
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