老劣化鋼筋混凝土構造物之受震行為研究

蔡政毅(Cheng-yi Tsai)

指導教授 ： 李姿瑩

國立中央大學/工學院/土木工程學系/碩士(2015年)

摘要

本研究探討老劣化鋼筋混凝土受震行為，主要探討鋼筋腐蝕之老劣化，鋼筋混凝土試體進行加速腐蝕試驗以加速其老劣化，並藉由老劣化試體與對照組試體同時進行振動台實驗，振動台實驗結果顯示老劣化後之試體其加速度、位移反應大於對照組試體，顯示腐蝕效應造成之老劣化現象對結構確有損害。
本研究亦建立數值分析模型，依實際鋼筋混凝土試體之尺寸、材料及加速腐蝕試驗之結果建立原始模型與腐蝕模型，並進行動力歷時分析，將其分析結果與振動台實驗結果進行擬合，擬合結果顯示加速度與位移歷時圖之波形大致相符，驗證數值模型之可靠性。
最後將分析模型進行側推分析與非線性歷時分析，探討腐蝕效應對結構物之影響，並提供未來實驗方向參考。

關鍵字

老劣化鋼筋混凝土 ； 振動台實驗 ； 鋼筋混凝土腐蝕模擬 ； 有限元素分析

並列摘要

The research is aimed to discuss the seismic response of the aging reinforced concrete. The major object is discussed with the degradation of corroded reinforcement. Accelerating corrosion test is applied to accelerate the aging effects, and shaking table tests is conducted to compare dynamic responses of the aging specimen and normal specimen. By comparing the responses, the experimental results show that the acceleration and displacement responses of the aging specimens are larger than the normal specimens. The results reveal that corrosion effect of the aging effects damages the construction.

The research also builds the numerical models which are according to the sizes, materials of the real specimens. The modeling the corrosive effect of the specimens is according to the results of accelerating corrosion test and calculating the parameters by formulas. The dynamic time history analysis of the finite element analysis is conducted after the models are built. By comparing the results of shaking table test and the results of analysis, the comparing results reveal the acceleration and displacement responses are coincide well. It proves that the reliability of the numerical models. At the end of the research, the pushover analysis and nonlinear time history analysis are applied to discuss the corrosion effect of the construction and provide the experimental aspects for the future researches.

並列關鍵字

aging reinforced concrete ； shaking table test ； the corrosive modeling of RC ； finite element analysis

參考文獻

葉勇凱、蕭輔沛 (2006)，「建築結構耐震能力詳細評估法-以消防廳舍為例」，鋼筋混凝土建築耐震能力評估研討會論文集，臺北。

黃兆龍、張大鵬、王和源、邱英嘉 (1993)，「鋼筋混凝土腐蝕對握裹力影響之研究」，防蝕工程，第7卷，第3期，第45-51頁。

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Fang, C., Lundgren, K., Chen, L., and Zhu, C. (2004). “Corrosion influence on bond reinforced concrete,” Cement and Concrete Research, Vol. 34, pp. 2159-2167.