Hybrid Control of Seismic Response of Bridge Structures: A Coordinated Effort between the U.S. and Japan

该项目将进行 协同研究 桥梁结构混合控制 大学之间 加州、欧文（UCI）和 公共工程研究所 （PWRI），建设部， 日本 主要目标是开展 深入的理论/数值 异步电动机混合控制研究 桥梁结构系统。 在 特别地，控制算法将 为各种类型的 混合控制系统目前 在PWRI开发。 这些 桥梁混合控制系统 结构包括可变粘性 阻尼器，变刚度控制 设备，主动滑动隔离 系统，主动基础隔震 系统等。混合动力控制 系统，其中包括一个 被动与主动结合 控制装置已经显示出 更加有效和实用， 减小大跨度结构的响应 桥梁结构 强烈地震。 抗震混合控制系统是 通常是高度非线性的（例如 主动滑动系统和变量 刚性装置）非弹性的，（例如 作为主动橡胶支座隔震 系统）或时变（如 可变粘滞阻尼器）。 需要进行研究， 开发控制算法， 可以纳入 计算机/处理器和控制 混合电路硬件 控制桥梁结构。 将进行理论研究 在UCI，而硬件 发展和实验测试 将在PWRI进行。 各种 UCI开发的控制算法 将被用于实验 试验. 实验结果 在PWRI获得的测试将是 与相应的 理论/数值解 在UCI获得。 差异 在实验和 理论结果将是 审查、调查和 更正。

This project is to conduct collaborative research on aseismic hybrid control of Bridge structures between the University of California, Irvine (UCI), and the Public Works Research Institute (PWRI), Ministry of Construction, Japan. The main objective is to carry out in-depth theoretical/numerical studies of aseismic hybrid control systems for bridge structures. In particular, control algorithms will be developed for various types of hybrid control systems currently being developed at PWRI. These hybrid control systems for bridge structures include variable viscous dampers, variable stiffness control devices, active sliding isolation systems, active base isolation systems, etc. Hybrid control systems, which consist of a combination of passive and active control devices have been shown to be more effective and practical in reducing the response of long-span bridge structures subjected to strong earthquakes. Aseismic hybrid control systems are often highly nonlinear (such as active sliding systems and variable stiffness devices) inelastic, (such as active rubber-bearing isolation systems) or time-variant (such as variable viscous dampers). Research efforts are needed to develop control algorithms which could be incorporated into computer/processor and control hardware for aseismic hybrid control of bridge structures. Theoretical studies will be carried out at UCI, whereas hardware developments and experimental tests will be conducted at PWRI. Various control algorithms developed at UCI will be used in the experimental tests. Results of the experimental tests obtained at PWRI will be correlated with the corresponding theoretical/ numerical solutions obtained at UCI. Discrepancies between experimental and theoretical results will be examined, investigated and corrected.