Simultaneous Design Method for Frame-Damper Systems of Building Frames with Energy Absorbing Dampers

本项目的目的是开发一种新的粘弹性(或粘性)阻尼器框架结构的相互作用设计方法。在本项目中取得了以下成果。提出了一种设置粘弹性阻尼器的剪弯结构模型的优化设计方法。将一组与设计反应谱相容的地震视为设计地震。问题中指定了粘弹性阻尼器的总数量，并约束了地震动层间位移的上限。故事刚性的总和是目标函数。采用梯度投影法作为优化算法。结果表明，将文献[1]中的减缩模型优化设计方法与框架静力优化设计方法相结合，对设置粘弹性(或粘滞)阻尼器的建筑框架进行优化设计是有效的。该方法计算效率高，使设计人员可以通过交互式的设计-计算机系统进行被动阻尼器框架的设计。对设置丙烯酸酯粘弹性阻尼器的三层模型框架结构进行了随机振动台试验。反应控制模型框架是为谱协调设计地震而设计的。试验和数值模拟表明：(1)等效Voigt型模型是丙烯酸酯粘弹性阻尼器的理想模型；(2)含等效Voigt型模型的框架数值模型精度较高；(3)反应控制设计法是设置丙烯酸酯粘弹性阻尼器的框架结构的可靠设计方法。

The purpose of this project is to develop a new interactive design method of building frames with visco-elastic (or viscous) dampers. The following results have been obtained in this project.1. An optimal design method has been proposed for shear-flexural building models with visco-elastic dampers. A set of design response spectrum-compatible earthquakes is treated as the design earthquake. The total amount of visco-elastic dampers is specified and the upper bounds of the seismic interstory drifts are constrained in the problem. The sum of the story stiffnesses is the objective function. The gradient projection method has been employed as the optimization algorithm.2. It has been shown that combination of the optimal design method stated in item 1 for reduced models with the static optimal design method for frames is effective in optimally designing building frames with visco-elastic (or viscous) dampers. This method is computationally efficient and enables designers to design passive-damper frames via an interactive designer-computer system.3. A random shaking table experiment has been conducted for the response-controlled three-story model building frame with acrylic visco-elastic dampers. The response-controlled model building frame is designed for the spectrum-compatible design earthquakes. The experiment and the corresponding numerical simulation demonstrate that (1) an equivalent Voigt-type model is a suitable model of the acrylic visco-elastic damper, (2) the accuracy of the numerical model of a frame including such equivalent Voigt-type model is high and (3) the response-controlled design method is a reliable design method for the building frames with acrylic visco-elastic dampers.