（1 苏州科技大学土木工程学院， 苏州 215011； 2 中交一公局第二工程有限公司， 苏州 215011）

［摘要］为建立CGMM加固损伤钢筋混凝土圆柱的恢复力模型，通过3根1∶3缩尺试件的拟静力试验，分析了CGMM加固及不同加固高度对试件破坏模式、承载能力、延性等的影响。在此试验研究的基础上，提出了无量纲化的三折线骨架曲线模型，拟合了各阶段的刚度退化规律，给出了不同加固高度试件刚度退化的关系式，建立适用于此类加固的恢复力模型，并与试验滞回曲线对比分析，验证了该恢复力模型的合理性与正确性。

［关键词］水泥基灌浆料及钢丝网；加固高度；恢复力模型；刚度退化；抗震性能

中图分类号：TU375-3，TU376文献标识码：A文章编号：1002-848X(2021)10-0117-06

Experimental study on the restoring force model of damaged reinforced concrete cylinder strengthened by CGMM

XU Cong1, CHEN Jianbing1, ZHOU Chen2

(1 School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China;2 CCCC First Highway Two Engineering Co., Ltd., Suzhou 215011, China)

Abstract:In order to establish the restoring force model of damaged reinforced concrete cylinder strengthened by CGMM, low cyclic loading test on three 1∶3 scale specimens were implemented. The influence which were strengthened by CGMM with different height of reinforcement of failure mode, bearing capacity, ductility were analyzed. On this experimental study basis, the dimensionless three-line model of skeleton curves was put forward. The stiffness degradation law of each stage was obtained, and the relationship between stiffness degradation of specimens with different heights of reinforcement was got. A restoring force model suitable for this kind of reinforcement was established and compared with hysteresis curve of test, which verifies the rationality and correctness of the restoring force model.

Keywords:cement-based grouting material with steel wire mesh;height of reinforcement;restoring force model;stiffness deterioration;seismic performance

*苏州市市级建设科研项目（苏住建科［2018］6号），苏州科技大学科研创新计划项目（SKCX17-022）。

作者简介：徐聪，硕士，Email:815079850@qq.com；通信作者：陈建兵，学士，教授，Email:szctt2009@163.com。