"Sifcon" Connection for Precast Prestressed Concrete SeismicResistant Frames

这个项目是为了探索几个新的想法和概念， 发展有效的抗震设计和建筑 PC建筑框架的技术。 它们包括：（1）使用框架 由（a）预制预应力柱制成的系统，可能有几个 层高，带有短梁延伸，以及（B）预制预应力 或部分预应力梁连接到延伸柱;（2） 现浇（CIP）接缝的放置，旨在作为能源 吸收塑性铰，距离一至三个梁深， 塔的表面;和（3）SIFCON（浆料）的利用 渗透纤维混凝土-纤维混凝土的最终）作为 在CIP接头中使用的基质，以确保高延展性，增加能量 吸收，减少剥落，并提高抗剪切力在负载 逆转

This project is to explore several novel ideas and concepts for the development of effective earthquake-resistant design and construction techniques for PC building frames. They include: (1) use of a framing system made out of (a) precast prestressed columns, possible several stories high, with short beam extensions, and (b) precast prestressed or partially prestressed beams connected to the extended columns; (2) placing of cast-in-place (CIP) joint, designed to serve as an energy absorbing plastic hinge, at a distance of one to three beam depths from the face of the column; and (3) Utilization of SIFCON (slurry infiltrated fiber concret--the ultimate in fiber concrete) as the matrix used in the CIP joint to insure high ductility, increase energy absorption, reduce spalling, and improve shear resistance during load reversals.