高阶单步拟动力子结构试验算法

High Order Single Step Substructure PseudoDynamic Testing Algorithm

摘要:

在高阶单步拟动力试验算法基础上,将具有无条件稳定、优良的算法阻尼特性、无超越现象、截断误差为Δt5的高阶单步法用于拟动力子结构试验,提出了高阶单步拟动力子结构试验算法.根据拟动力子结构算法数值模拟分析结果,以及底部框支配筋砌块短肢砌体剪力墙足尺模型结构试验结果,证实了高阶单步算法的可行性和优越性.

关键词:拟动力子结构试验; 多自由度; 高阶单步法; 足尺模型; 刚度修正

Abstract:

Based on the study on the high order singlestep pseudodynamic testing algorithm,the high order single step algorithm featuring unconditionally stable good algorithm damping properties,a lack of transcendental phenomenon,and Δt5 of truncation error is applied to substructure pseudodynamic testing,and then the high order single step substructure pseudodynamic testing algorithm is proposed.The feasibility and superiority of the algorithm are verified with the numerical simulations of the substructure pseudodynamic testing algorithm comparison and the testing results of the fullscale framesupported reinforced concrete shortlimb masonry shell wall structure.

Key words:substructure pseudodynamic testing; multidegree of freedom; high order single step algorithm; scale model; stiffness correction