Seismic control of cable-stayed bridges is of paramount importance due to their complex dynamic behavior, high flexibility, and low structural damping. In the present study, several semi-active Fuzzy Control Algorithms (FCAs) for vibration mitigation of Lali Cable-Stayed Bridge are devised. To demonstrate the efficiency of the algorithms, a comprehensive nonlinear 3-D model of the bridge is created using OpenSees. An efficient method for connecting MATLAB and OpenSees is devised for applying FCAs to the structural model of the bridge. Two innovative fuzzy rule-bases are introduced. A total of six different fuzzy rule-bases are utilized. The efficiency of the FCAs is evaluated in a comparative manner. The performance of fuzzy control systems is also compared with a sky-hook and a passive-on system. Moreover, the sensitivity of efficiency of control systems to the peak ground acceleration is evaluated qualitatively. In addition, the effect of time lag is also investigated. This study thoroughly examines the efficiency of the FCAs in different aspects. Therefore, the results can be regarded as a general guide to design semi-active fuzzy control systems for vibration mitigation of cable-stayed bridges.

中文翻译：

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地震作用下MR阻尼器对拉力斜拉桥半主动模糊控制

斜拉桥的地震控制由于其复杂的动态特性，高柔韧性和低结构阻尼而极为重要。在本研究中，设计了几种用于拉力斜拉桥减振的半主动模糊控制算法（FCA）。为了证明算法的效率，使用OpenSees创建了桥梁的全面非线性3-D模型。设计了一种将MATLAB与OpenSees连接的有效方法，以将FCA应用到桥梁的结构模型中。介绍了两个创新的模糊规则库。总共使用了六个不同的模糊规则库。以比较的方式评估FCA的效率。模糊控制系统的性能也与天钩和被动接通系统进行了比较。此外，定性地评估了控制系统效率对峰值地面加速度的敏感性。此外，还研究了时滞的影响。这项研究彻底检查了FCA在不同方面的效率。因此，该结果可作为设计斜拉桥减振半主动模糊控制系统的一般指南。