The Influence of Reversed Cyclic Loading on Newly Poured Reinforced Concrete Beams

• Main Authors: Heng-Wei Kuo, 郭恆維
• Other Authors: Yung-Chih Wang
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/24101983290679793059

碩士 === 國立中央大學 === 土木工程研究所 === 90 === The main purpose of this research was to investigate the effect of seismic vibration on maturing reinforced concrete structures by means of experimental study. The laboratory program was performed to observe concrete strength reduction and bond degradation of reinforcing bars in tested concrete beams subjected to simulated seismic loading when concrete was maturing at the age of one to seven days. As an outgrowth of the initial test experience, the experimental information can be somehow referred to find a solution in engineering problems related to the study or to expand the further test study. General results indicated the condition in concrete strength reduction caused by seismic disturbance was more severe than that in bond strength degradation of beams bars. It was recommended that crack patterns and core concrete strength could be provided to examine the structural damage due to seismic effect on early-age concrete. Meanwhile, the ductile variation of beams can be briefly evaluated by means of moment-curvature analysis.