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Development of a long-stroke MR damper for a building with tuned masses

机译：为具有调谐质量的建筑物开发长行程MR阻尼器

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This article deals with the development of a long-stroke MR-damper aimed to control, by reacting on a tuned mass (TM), the earthquake performance of an existing 21-story office building located in Santiago, Chile. The +/- 1 m stroke MR-damper was designed using the nominal response of the building equipped with two 160 ton pendular masses tuned to the fundamental lateral vibration mode of the structure. An extended physical on-off controller, a special current driver, a new real-time structural displacement sensor, and an MR-damper force sensor were all developed for this application. The physical damper and control were experimentally validated using a suite of cyclic and seismic signals. The real-time displacement sensor developed was validated by first using a scaled down building prototype subjected to shaking table tests, and then a real-scale free vibration test on the sensor installed horizontally at the foundation level of a building. It is concluded that the proposed TM and MR-damper solution is technically feasible, and for an equivalent key performance index also defined herein, more economical than a solution based on passive viscous dampers.
机译：本文介绍了一种长冲程MR阻尼器的开发，该阻尼器旨在通过对调谐质量（TM）做出反应来控制位于智利圣地亚哥的现有21层办公楼的抗震性能。 +/- 1 m行程MR阻尼器是根据建筑物的标称响应设计的，该建筑物配备了两个160吨的摆式质量块，并根据结构的基本横向振动模式进行了调整。为此应用开发了扩展的物理开关控制器，特殊的电流驱动器，新的实时结构位移传感器和MR阻尼力传感器。物理阻尼器和控制装置通过一套周期性和地震信号进行了实验验证。首先通过使用按比例缩小的建筑物原型进行振动台测试，然后对水平安装在建筑物基础层上的传感器进行实时自由振动测试，来验证开发的实时位移传感器。结论是，提出的TM和MR阻尼器解决方案在技术上是可行的，并且对于此处也定义的等效关键性能指标，它比基于无源粘性阻尼器的解决方案更经济。

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