自控耗能UPPC框架与普通UPPC框架抗震性能对比

Study on seismic Performance of Self-adapting Energy and Common UPPC Frames

本文通过设置自控元件调减地震作用下无粘结预应力筋的应力,使得无粘结部分预应力混凝土(UPPC)框架结构在地震作用下实现梁铰侧移机制,设计了试验用的自控耗能UPPC框架,并根据此框架设计了相应的自控元件。在此基础上,进行了自控耗能UPPC框架与普通UPPC框架在往复荷载作用下的对比试验。分析结果表明:(1)相比于没有设置自控元件的普通UPPC框架,设置了自控元件的自控耗能UPPC框架延性系数较高,但是抗侧力稍低;(2)自控耗能UPPC拥有更好的耗能能力。

In this paper,self-adapting component applied in the unbonded partial prestressed concrete(UPPC) frame could decrease the stress of unbonded prestressed tendons and make the UPPC frame become the beam hinge mechanism under earthquake. The established self-adapting energy dissipation UPPC frame and self-adapting component were designed in this paper. On this basis,Selfadapting energy and common UPPC frames have carried on the cyclic loading experiment. The results showed that:(1) Compared with the common UPPC frame(without self-adapting component),lateral resistance of self-adapting energy dissipation UPPC frame(with self-adapting component) was slightly lower,but its ductility is better;(2) Self-adapting energy dissipation UPPC frame(with selfadapting component) have better energy dissipation capacity.