TEST ON THE SEISMIC PERFORMANCE OF FRAME JOINTS WITH PRE-CAST RECYCLED CONCRETE BEAMS AND COLUMNS

摘要

This paper mainly studies the behavior of the side joint in a frame structure made of pre-cast recycled concrete. There are three different types of steel reinforcement connections, which are by welding, by beam connector and by column connector. The pre-cast frame structure is exposed to loading and an observation on the behavior of the concrete frame side joint is made, this includes the joint cracking, further development of the crack, yielding, and the eventual failure of the joint. An analysis was carried out on these three different reinforcement connection forms. Further more an analysis on the failure mode, load-displacement, ductility, strength, and stiffness of the pre-cast frame structure was carried out. The research findings show that pre-cast frame structure's bearing capacity is similar to that of normal concrete. The ductility, energy consumption and other properties satisfy the design requirements of concrete structures.