摘要
研究了空间网架结构在地震力作用下弹塑性工作状态及其特点．采用时程分析法，选用Ｅｌｃｅｎｔｒｏ地震波，并采用作者等人提出的恢复力模型多折线模型，导出了单元刚度随时间变化后的弹塑性刚度值．
The characteristics of elasto plastic condition of spatial trusses under earthquake is studied and the multiple broken line model is first presented, which is a new restoring force method. Combined with experimental result, the model for the elasto plastic analysis of spatial trusses is built, which is composed of eight broken lines. By the model, the parameters for residual strain and elasto plastic stiffness value of unit stiffness decreasing with time are derived.
出处
《甘肃工业大学学报》
1998年第4期84-88,共5页
Journal of Gansu University of Technology
基金
甘肃省科技攻关项目
关键词
网架结构
恢复力模型
多折线模型
空间网架结构
spatial trusses, earthquake proof,restoring force model, multiple broken line model, elasto plastic stiffness, residual strain
