基于OpenSees的子结构拟动力试验方法研究

研究了以有限元软件OpenSees为核心计算平台的子结构拟动力试验方法,主要探讨了在OpenSees中实现子结构反应量实时查询、子结构边界条件处理,以及利用OpenSees的通信协议实现试验子结构和整体结构时程分析程序之间位移指令和反馈力的数据交换方法.利用本文方法进行了8层防屈曲支撑高层钢框架的虚拟子结构拟动力试验,试验结果与采用OpenSees进行整体时程分析的结果吻合良好,证明了本文子结构拟动力试验方法的可行性与有效性.

Research on Substructure Pseudo-dynamic Test Method Based on OpenSees

OpenSees based substructure pseudo-dynamic test method was investigated. Several key problems, such as real-time inquiry of substructure responses, boundary condition simulation, and data exchange of request displacements and feedback forces between substructures and time history analysis program, were discussed. Using the method, a virtual pseudo-dynamic substructure test was conducted to simulate the seismic response of an eight-story steel frame with buckling restrained braces. The test results were compared with time history analysis results calculated with OpenSees, and the good agreement verifies the feasibility and effectiveness of the method.