Seismic Method Studies for Hollow Concrete Brick Panels Attached to Steel Frames

Abstract

The objectives of this research are to understand the seismic performance of hollow concrete brick panels attached to steel frames and to improve the current construction methods by adding seismic methods including sliding joints and seismic joints To accomplish these two specimens with different spacing of vertical reinforcement were subjected to in-plane reversed cyclic displacements and constant vertical loading The results showed that the panel with seismic methods cracked at the sliding joint and formed the initial crack slit at a small drift ratio After sliding joint is cracked the specimen started to slide along the interface of the sliding joint causing merely damage to the panel After the drift ratio reached 1% which is the distance of the seismic joints the steel frame started to push the panel causing brick spalling from the corner of the panel Meanwhile the column bricks also formed vertical cracks due to the push of the steel frame which began to develop its strength and ductility At the end of the experiment both side of the column bricks either fell off from the panel or generated wide cracks showing the lack of horizontal reinforcement connection between the panel and column bricks Reviewing the seismic performance made by ASCE41-13 both specimens merely generated cracked in front side at drift ratio 0 5% with bricks slightly fell off in back side which still reach the requirement of “operational” At drift ratio 1% panels were not severely damaged but had brick spalling from the corner which also fits the requirement of “position retention” and “life safety” showing that the adding of seismic can surely improve the seismic performance of hollow concrete brick panels Besides both damage phenomena and the results of strain gauge have shown that there is no obvious difference with different spacing of vertical reinforcement

Date of Award	2020
Original language	English
Supervisor	Yi-Hsuan Tu (Supervisor)