（西安建筑科技大学土木工程学院， 西安 710055）

［摘要］为研究不同配钢形式的型钢混凝土（SRC）异形柱框架的抗震性能，对两榀框架模型进行低周反复加载试验，获得其破坏形态，分析其滞回曲线、骨架曲线、承载力、延性、耗能能力、刚度及累积损伤等特性。结果表明：SRC异形柱框架破坏时形成梁铰机制，符合“强柱弱梁”的抗震设计要求；与空腹式配钢相比，实腹式配钢的SRC异形柱框架抗震性能更为优越，承载力、延性和弹性刚度均显著提高，抗倒塌能力和耗能能力增强，但刚度退化和累积损伤却略微严重。

［关键词］配钢形式；  型钢混凝土； 异形柱框架； 抗震性能； 拟静力试验

中图分类号：TU398+.2文献标识码：A文章编号：1002-848X(2016)23-0050-05

Experimental comparison of seismic behaviors of steel reinforced concrete frames with special-shaped  columns of different steel reinforcements

Liu Zuqiang, Xue Jianyang, Zhao Hongtie

(School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China)

Abstract:In order to study the seismic behaviors of steel reinforced concrete (SRC) frames with special-shaped columns of different steel reinforcements, two pieces of frame models were tested under low cyclic reversed loading to obtain the failure pattern and analyze the mechanical behaviors such as hysteretic loop, skeleton curve, carrying capacity, ductility, energy dissipation, stiffness and accumulative damage. The results show that the SRC frames with special-shaped columns form the beam hinge mechanism at destruction, which accords with the seismic design requirement of “strong column and weak beam”. Compared with the lattice steel reinforcement, seismic performance of SRC frame with special-shaped columns of solid steel reinforcement is more superior. Bearing capacity, ductility and elastic stiffness significantly increase, and anti-collapse ability and energy dissipation ability enhance, but stiffness degradation and damage accumulation are slightly worse.

Keywords:steel reinforcement; steel reinforced concrete; frame with special-shaped columns; seismic behavior; quasi-static test

*国家自然科学基金项目（51308444，50978217），陕西省自然科学基础研究基金（2014JQ7288），陕西省教育厅科研计划项目（16JK1464），西安建筑科技大学创新团队资助计划和青年科技基金（QN1408）。

作者简介：刘祖强，副教授， Email: liuzuqiang0081@126.com。