鋼筋混凝土梁結合補強及防蝕技術之開發

• Main Author: 胡智超
• Other Authors: 王仲宇
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/48916567927146450320

碩士 === 國立中央大學 === 土木工程研究所 === 88 === In this paper, behaviors of fiber reinforced plastic (FRP) retrofitted reinforced concrete beams with high chloride content and rebar corrosion under static loads were studied both experimentally and analytically. Test beams were characterized into three different groups according to the states of corrosion damage: (I) control beam; (II) cathodic protection; and (III) accelerated corrosion. A new and effective anode sacrifice technique by patching thin plates on the surface of concrete structure was adopted to the retrofitting system. The load carrying capacities of all the beams with or without FRP patching were tested in the laboratory. Experimental results showed that the corrosion state of steel,water/cement ratio of concrete material,arrangements and the number of FRP patches affect the strength and failure mechanisms of the retrofitted RC beams. Simple analysis models and design concept for retrofitting the cracked and corroded RC beams strengthened by the FRP sheets are also presented and discussed.