长春工程学院学报（自然科学版）2024，Vol.25Issue(1)：12-17,6.DOI:10.3969/j.issn.1009-8984.2024.01.003
基于承载力等效的RC桥墩动力相似性研究
Research on Dynamic Similarity of RC Bridge Piers Based on Equivalent Bearing Capacity
摘要
Abstract
The similarity theory is an important foundation for studying the similarity relationship between prototype structure and model structure.At present,most of the vibration table tests on reinforced concrete bridge piers are based on scaled models,but it is difficult to ensure the similarity of material properties af-ter scaled.In order to compensate for the shortcomings of the similarity theory,the reinforcement of the section is optimized and designed to ensure the similarity relationship of material properties according to the principle of equivalent load-bearing capacity of the section.A prototype and finite element model of re-inforced concrete bridge pier structure with a scale ratio of 1∶4 is established,represented by the Ⅷ de-gree zone,and the dynamic time history analysis by applying three different seismic motions of different in-tensities is conducted.The results show that the displacement and drift rate on the top of the model bridge pier are roughly the same as the prototype bridge pier with small errors under the same seismic action.As the peak ground acceleration increases,the error gradually decreases,verifying that the equivalent bearing capacity method can effectively analyze the dynamic similarity of scaled reinforced concrete bridge piers.关键词
相似理论/截面能力等效/有限元分析/RC桥墩Key words
similarity theory/equivalent section capacity/FEA/RC bridge pier分类
交通工程引用本文复制引用
于波..基于承载力等效的RC桥墩动力相似性研究[J].长春工程学院学报（自然科学版）,2024,25(1):12-17,6.基金项目
国家自然科学基金(51808351) （51808351）
