市政技术2024，Vol.42Issue(8)：10-15,6.DOI:10.19922/j.1009-7767.2024.08.010
基于稳态响应规律的双线性滞回模型等效参数研究
Study on Equivalent Parameters of Bilinear Hysteretic Model Based on Steady-state Response Law
摘要
Abstract
In order to study the displacement estimation accuracy of equivalent linearization methods,a bilinear hysteresis model was used as the analysis model to analyze the free vibration process of a nonlinear single degree of freedom system.It was pointed out that the equivalent parameters calculated by the secant rigidity method(R-H method)had a significant deviation from the actual results.A method for calculating equivalent parameters was pro-posed under the action of harmonic forces.The influence of the excitation period of harmonic excitation and the dis-placement peak of structural vibration on the calculation results were taken into account.The equivalent lineariza-tion analysis was conducted on the nonlinear system corresponding to different parameters through numerical analy-sis to verify the effectiveness and accuracy of the proposed equivalent parameter calculation method.The results show that the equivalent stiffness calculated by the R-H method is relatively higher.While the improved method can reasonably estimate the nonlinear time history displacement results,and the calculation accuracy is better than the R-H method.关键词
双线性滞回模型/等效线性化/等效刚度/稳态响应Key words
bilinear hysteretic model/equivalent linearization/equivalent stiffness/steady state response分类
土木建筑引用本文复制引用
彭凌云,韩冰..基于稳态响应规律的双线性滞回模型等效参数研究[J].市政技术,2024,42(8):10-15,6.基金项目
国家自然科学基金(52178098) （52178098）
