Study on the Characteristic of Plastic Hinge for Reinforced Concrete Column considering the Velocity Pulse Effect

• Main Authors: Yu-MingHsu, 許育銘
• Other Authors: Kuang-Yen Liu
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/257pfr

碩士 === 國立成功大學 === 土木工程學系 === 107 === In this study, the reinforced concrete square columns were subjected to repeated loading tests at different loading speeds to understand their lateral force and displacement behavior under near-fault earthquakes. The experimental sample design is based on the static back load results of a set of double curvature columns. The experimental group is 4 sets of dynamic reverse load tests. The variables are loading speeds, including 0, 250, 500 and 1000 mm/sec. The experimental results show that the lateral strength of the test body increases with the increase of the loading speed, but the displacement of the peak intensity has a tendency to decrease. According to the strain rate measured by the specimen, the dynamic growth factor of CEB is used to correct the stress and strain modes of concrete and steel. The TEASPA and XTRACT programs can be used to obtain the plastic hinge parameters considering the velocity pulse. The analysis results show that the influence of the velocity pulse effect on the material mode should be considered to reasonably predict the envelope of the lateral force displacement curve of the experiment.