Simulation research on the energy dissipation and shock absorption performance of a swing column device based on fuzzy control

作     者：Zheng Yong Yuan Bo Zheng Yong;Yuan Bo

作者机构：Research Center of Space StructuresGuizhou UniversityGuiyang 550004China College of Civil EngineeringGuizhou UniversityGuiyang 550004China Key Laboratory of Structural Engineering of Guizhou ProvinceGuiyang 550025China 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2022年第21卷第4期

页      面：987-998页

核心收录：

学科分类：081405[工学-防灾减灾工程及防护工程] 08[工学] 0818[工学-地质资源与地质工程] 0814[工学-土木工程] 

主　　题：swing column device double-column bridge pier fuzzy control MR damper structural control low-element modeling method 

摘      要：Double-column bridge piers are prone to local damage during earthquakes,leading to the destruction of bridges.To improve the earthquake resistance of double-column bridge piers,a novel swing column device(SCD),consisting of a magnetorheological(MR)damper,a current controller,and a swing column,was designed for the present work.To verify the seismic energy dissipation ability of the SCD,a lumped mass model for a double-column bridge pier with the SCD was established according to the low-order modeling method proposed by Steo.Furthermore,the motion equation of the double-column bridge pier with the SCD was established based on the D′Alembert principle and solved with the use of computational programming.It was found that the displacement response of the double-column bridge pier was effectively controlled by the SCD.However,due to rough current selection and a time delay,there is a significant overshoot of the bridge acceleration using SCD.Hence,to solve the overshoot phenomenon,a current controller was designed based on fuzzy logic theory.It was found that the SCD design based on fuzzy control provided an ideal shock absorption effect,while reducing the displacement and acceleration of the bridge pier by 36.43%‒40.63%and 30.06%‒33.6%,respectively.