| 英文摘要 |
Precast/prestressed concrete structures have the advantages of high quality and fast constructing. And due to the prestress the residual displacement after earthquake will be restrained. It can keep the functions of buildings. But at high seismic region the design of prestressed structures must be careful. The prestressed tendons can not yield to keep the prestress at any conditions. So the requirement of energy dissipation is not easily achieved. In this study, we intend to use energy dissipation devices in beam-to-column connections and study the provided dissipation energy. It is hoped that those devices can provide the seismic performance of the precast/prestressed concrete structures. Five reinforced concrete specimens with or without energy dissipating devices were tested to study the energy dissipating capacity and the damage patterns of concrete. Three exterior joint specimens LPTC, HPTC and HPTC-M used steel plates as the energy dissipating device. Interior joint specimen PTC had different lateral steel configurations in the left and right connected beams to study the damage patterns. Another interior joint specimen Hybrid PTC used partially unbonded mild steel bars as the energy dissipating device. |
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