Design of CFRP Composite Connector for Precast Concrete Elements

摘要

Steel plate connectors joining convrete wall panels or horizontal diaphragms are susceptible to corrosion and behave poorly under seismic loads,due to their low strengthand poor ductility.Carbon Fiber Reinforced Plastic (CFRP)composites with their superior strength and resistance to electrochemical corrosion are a practical alternative for connecting prcast concrete members.A methodology for designing CFRP connections is developed.The design methodology is based on established models f bond length estimates and laminate theory and correlates reasonably well with results obtained in a realted experinmental study.The resulting connection design consists of CFRP composite layers adhered to the concrete surface,and four adhesive anchors placed at the boundariesof the precast concrete members.