近断层地震作用下结构振动模糊PID控制算法研究  

Research on fuzzy PID control algorithm for structural vibration under near-fault earthquake action

作　　者：富腾 韩流涛 王兴国 葛楠 Fu Teng;Han Liu-tao;Wang Xing-guo;Ge Nan(School of Civil Engineering,North China University of Science and Technology,Tangshan 063210,China)

机构地区：[1]华北理工大学建筑工程学院,河北唐山063210

出　　处：《工程抗震与加固改造》2025年第2期28-35,79,共9页Earthquake Resistant Engineering and Retrofitting

基　　金：河北省高等学校科学技术研究项目(QN2023165);河北省自然科学基金项目(E2020209086);唐山市科学技术局项目(22130225H)。

摘　　要：针对近断层地震对结构低频脉冲作用而引起的强烈振动响应,通过模糊PID控制算法对设立的20层结构模型进行模拟计算分析,该模拟利用Matlab软件进行求解。分析结果表明:近断层地震下,模糊PID控制算法对该模型振动反应产生的速度与位移产生有明显的减震作用,特别是对近断层地震中产生的低频脉冲效应有明显抑制作用,并且当控制力一定时,通过调整pid_(max)这一指标,仅控制其第一振型便能达到满意的减震效果,但其楼层加速度在1~15层时减震效果比较显著,其它楼层则并无明显的减震效果。由于模糊PID控制算法对近断层地震作用下结构产生的速度与位移起到了良好的抑制效果,其为振动主动控制方法更好地应用于实际工程提供了理论支持。Aiming at the strong vibration response caused by the low-frequency pulse effect of near-fault earthquakes on structures,the 20-story structure model is simulated and analyzed by fuzzy PID control algorithm.The simulation is solved by software Matlab.The analysis results show that under near-fault earthquakes,the fuzzy PID control algorithm has obvious damping effect on the velocity and displacement generated by the vibration response of the model,especially on the low-frequency pulse effect generated in near-fault earthquakes.Moreover,when the controlling force is certain,by adjusting pidmax,only the first vibration mode can be controlled to achieve satisfactory damping effect.However,the damping effect is more significant when the floor acceleration is from 1-floor to 15-floor,while the other layers have no obvious damping effect.Because the fuzzy PID control algorithm has a good effect on the velocity and displacement of structures under near-fault earthquake,it provides theoretical support for the active vibration control method to be better applied in practical engineering.

关 键 词：近断层地震 模糊PID控制 主振型 层间位移 

分 类 号：TU375.4[建筑科学—结构工程]