章钢雷1，  曹双寅2，  敬登虎2，  陈玉立3

（1中船第九设计研究院工程有限公司，上海200063；2东南大学土木工程学院，南京210096；3苏州市建筑设计研究院有限责任公司，苏州215021)

 

[摘要] 对两榀钢板-砖砌体组合框架在相对较低竖向压应力水平下进行低周反复荷载试验，得到其滞回曲线。在此基础上，将骨架曲线简化为三线型恢复力模型。通过试验拟合的方法，得到了钢板-砖砌体组合框架统一的骨架线和刚度退化模型。通过与试验得到的滞回曲线进行比较，结果表明本文的恢复力模型精度较高，此外考虑了参数材料强度的影响，认为材料强度在一定范围内变化时，上述恢复力模型仍能较好地反映钢板．砖砌体组合框架的恢复力特性。

[关键词] 钢板-砖砌体；组合框架；恢复力模型；刚度退化

中图分类号：TU398    文献标识码：A  文章编号：1002-848X(2012) S2-0320-05

 

Zhang Ganglei1,  Cao Shuangyin2, Jing Denghu2,  Chen Yuli3

(1 China Shipbuilding NDRI Engineering Co., Ltd., Shanghai 200063, China; 2 School of Civil Engineering, Southeast University, Nanjing 210096, China; 3 Suzhou Institute of Architectural Design Co., Ltd., Suzhou 215021, China)

 

Abstract: Two steel plate-brick masonry composite frames with low verticalload level were tested under low cyclic loading and the hysteretic curve was studied. Based on the experimental research, the skeleton curve was simplified as a trilinear hysteretic model. The unified skeleton curve model and stiffness degradation model were proposed according to fitting the test data. Contrasted with the tested hysteretic curve, the hysteretic model has high accuracy, then the effect of material strength was considered, wluch shows that the former hysteretic model finely reflects the hysteretic characteristics of steel plate-brick masonry composite frames, when material strength varies in a certain range.

Keywords: steel plate-brick masonry; composite frame; hysteretic model; stiffness degradation