Experimental Study on Seismic Performance of High Strength Bolted Prefabricated Frame
A prefabricated frame with high strength bolts connecting the embedded steel parts near the beam-end was proposed.The corresponding scale model and the cast-in-place model of the same size were made,and the comparison tests of low cycle reciprocating loading were carried out for them.The results show that:compared with ordinary cast-in-place frame,the ductility coefficient of prefabricated frame with high-strength bolted joints is about 6.57%higher,energy dissipation coefficient and equivalent viscous damping coefficient are increased by 22.95%and 20.00%respectively,and initial stiffness increased by 5.08%.However,the stiffness of prefabricated frame degrades rapidly after cracking.When the peak load is reached,the stiffness degradation curves of the prefabricated frame and the residual stiffness of the prefabricated frame tend to be the same.It shows that the prefabricated frame with high strength bolt connection has better integrity and seismic performance,and can be used for the design of prefabricated structure in seismic zone.
prefabricatedhigh strength boltseismic performancepseudo-static test