（1华南理工大学土木与交通学院, 广州 510641； 2 广东省建筑科学研究院集团股份有限公司, 广州 510500； 3 广东省建科建筑设计院有限公司, 广州 510010；4 加拿大女王大学土木工程学院, 金斯顿 K7L3N6）

［摘要］基于后插纵筋连接和后插纵筋套橡胶管两种连接方式，制作了由预制混凝土管桩作为预制管并在其核心浇筑混凝土的新型预制混凝土组合管柱，研究了不同连接方式的试件在低周往复荷载作用下的破坏现象、滞回曲线、骨架曲线、承载力、变形和延性。结果表明：两种连接方式的管柱均先在梁端出现裂缝，然后在节点区出现裂缝，最终节点破坏造成承载力下降，而柱身并未出现裂缝；两种连接方式的管柱滞回曲线呈现梭形，滞回环饱满，耗能能力良好；两种连接方式的管柱承载力接近，延性系数和弹塑性层间位移角满足规范的要求，变形能力良好；新型预制混凝土组合管柱的抗震性能较好，但在设计时应该对节点进行加强。

［关键词］新型预制混凝土组合管柱；抗震性能；滞回曲线；骨架曲线；耗能能力；延性

中图分类号：TU317+.2文献标识码：A文章编号：1002-848X(2021)07-0046-06

Experimental study of seismic behavior of new precast concrete composite pipe column

FAN Zhibo1, XU Qigong2,3, GUO Minlong2, MAO Na3, XU Caiwei4

(1 College of Civil Engineering and Transportation， South China University of Technology， Guangzhou 510641， China; 2 Guangdong Provincial Academy of Building Research Group Co., Ltd., Guangzhou 510500, China; 3 Jianke Architecture Design Institute of Guangdong Province, Guangzhou 510010, China; 4 Department of Civil Engineering, Queen′s University， Kingston K7L3N6, Canada)

Abstract:Based on the two connection modes of post-insertion longitudinal reinforcement and post-insertion longitudinal reinforcement with rubber hose, a new type of precast concrete composite pipe column with precast concrete pipe piles as precast pipes and concrete pouring at the core was fabricated. And the damage phenomenon, hysteresis curve, skeleton curve, bearing capacity, deformation and ductility of test specimens with different connection methods under low-cycle reciprocating load were studied. The results show that: the pipe column of the two connection modes have cracks at the beam first, and then at the joint area. Finally, the failure of the joints results in the decrease of bearing capacity, but no cracks appear in the column body. The hysteretic curves of the pipe column of two connection modes are spindle-shaped, with full hysteretic loop and good energy dissipation capacity. The bearing capacity of pipe column of the two connection modes is close, the ductility coefficient and the elastic plastic displacement angle meet the requirements of the specification, and the deformation capacity behaved well. The new precast concrete composite pipe column has better seismic behavior, but the joints should be strengthened in design.

Keywords:new precast concrete composite pipe column;seismic behavior;hysteresis curve;skeleton curve;energy dissipation capacity;ductility

作者简介：范枝波，硕士研究生，Email:1101063269@qq.com；通信作者：徐其功，博士，教授级高工，Email: xuqigong2005@sina.com。