摘要
本文介绍无粘结部分预应力板柱节点在反复荷载作用下的滞回特性、延性、强度和破坏形态。试验结果表明,在反复荷载作用下,板中无粘结预应力筋的应力增量较小;非预应力普通钢筋暗梁有效地提高了板柱节点在极限状态时,传递不平衡弯矩的能力及确保板冲切区的完整性。采用不同无粘结预应力筋布置方式的两个节点均具有较好的滞回特性和延性,节点抗震性能良好。
This paper reports the hysteretic characteristics, strength ductility, and failure mode for two unbonded partially prestressed concrete slab-column connections under cyclic loading. Test results show that the stress increase in unbonded tendons in the slab is quite small under cyclic loading, the bonded reinforcement in the flat beam increses the ability to transfer unbalanced moment at ultimate state in slab-column connection and ensures the intactness of the punching shear zone effectively. Both the connections with defferent arrangements of unbonded tendons possess good hysteretic characteristics and ductility, and exhibit good seismic performance.
出处
《建筑科学》
1992年第3期29-34,共6页
Building Science
