（1 同济大学预应力研究所， 上海 200092； 2 同济大学先进土木工程材料教育部重点实验室， 上海 200092； 3 中国建筑西南设计研究院有限公司， 成都 610041）

［摘要］采用ABAQUS软件和清华大学开发的滞回材料本构子程序PQ-Fiber对有粘结与无粘结混合配置预应力筋混凝土梁在竖向低周反复荷载下的抗震性能进行研究，重点从滞回性能、骨架曲线、耗能能力、延性、变形恢复能力等5个方面分析有粘结预应力筋与无粘结预应力筋相对含量对混合配置预应力筋混凝土梁抗震性能的影响。研究发现，有粘结与无粘结混合配置预应力筋混凝土梁（尤其是当无粘结筋的配筋比例在30%以内）的抗震性能是良好的。

［关键词］有粘结； 无粘结； 混合配置； 抗震性能； ABAQUS

中图分类号：TU378-2文献标识码：A文章编号：1002-848X(2018)08-0041-05

Seismic behavior study of hybrid reinforcement concrete beams with bonded and unbonded prestressed tendons under horizontal low cyclic loading

Xiong Xueyu1，2, Zhang Sen1,3

(1 Institute of Prestressed Structures, Tongji University, Shanghai 200092, China;  2 Key Laboratory of Advanced Civil Engineering Materials(Tongji University), Ministry of Education, Shanghai 200092, China;3 China Southwest Architectural Design and Research Institute Co.,  Ltd.,  Chengdu 610041, China)

Abstract:Seismic behavior of hybrid reinforcement concrete beams with bonded and unbounded prestressed tendons under horizontal low cyclic loading was studied using ABAQUS software and the hysteretic constitutive subroutine PQ-Fiber developed by Tsinghua University. Effects of relative content of bonded and unbonded prestressed tendons on seismic behavior of hybrid reinforcement prestressed concrete beams were studied from perspectives of hysteretic behavior, skeleton curve, energy dissipation capacity, ductility and resilience. Research results show that the seismic behavior of hybrid reinforcement concrete beams with bonded and unbonded prestressed tendons is good, especially when the reinforcement ratio of unbonded tendons is less than 30%.

Keywords:bonded; unbonded; hybrid reinforcement; seismic behavior; ABAQUS

*国家自然科学基金资助项目（５１１７８３２８，５１５７８４００）。

作者简介：熊学玉，博士，教授，博士生导师， Email：xueyu@tongji.edu.cn。