Energy Based Design of a System Combined of Damper and Displacement Controller for Seismically Exited Structures

本文提出了一种结合流体阻尼器和位移控制器的新型硬化型滞回装置。该系统安装在结构中，可以有效地控制建筑物的响应。以下描述了两个主要目标。开发一种双重设计方法来提高中等地震下的可居住性和防止强烈地震下破坏的蔓延：在该系统中，当遭受中等地震时，安装耗能的阻尼器降低了建筑物的反应，提高了可居住性。当受到强烈地震作用时，位移控制器抑制过大的层位移，而流体阻尼器消耗能量。这意味着建筑结构由采用流体阻尼器的抗震体系向采用刚性支撑的普通抗震体系转变。这种效应防止了结构破坏的蔓延。该系统的有效性已通过日本东北大学的试验验证，并进一步通过考虑各种条件的钢筋混凝土建筑分析进行了验证。提出一种控制建筑物在强震作用下的层位移响应的设计方法：在该系统中，当发生强震作用时，位移控制器控制建筑物的过大层位移，并按设计控制层位移的分布。使用该系统，可以通过抑制由于建筑物刚度和/或强度分布的不规则性或较高模态的贡献而引起的局部过大位移，从而获得层间位移的统一分布。本文提出了根据能量响应计算所需阻尼器数量的设计方法，在设计位移水平上平衡地震输入能量和结构和阻尼器消耗能量。该设计方法的有效性已通过安装在东北大学的振动台试验得到验证，并进一步通过考虑刚度和/或强度分布以及地震特性等各种条件的钢筋混凝土建筑分析得到验证。少

In this study a new device with hardening type hysteresis is proposed, combining fluid damper and displacement controller. This system is effective to control the response of buildings when it is installed in the structures. Two major objectives are described in the following.1. To develop a dual design method to improve habitability under a moderate earthquake and prevent the spread of damage under severe earthquake:In this system when subjected to a moderate earthquake, installed damper consuming energy decreases the response of buildings and improves the habitability. When subjected to a severe earthquake, the displacement controller restrains excessive story displacement while fluid damper consumes energy. This means that the building structure is change from the seismic control system with fluid damper to the normal earthquake resistant system with stiff braces. From this effect spread of structural damages are prevented. The effectiveness of this proposed system is verified by sh … More aking table tests installed in Tohoku University and furthermore investigated by analyses for reinforced concrete buildings considering various conditions.2. To develop a design method to control the response story displacement of a building under severe earthquake:In this system when subjected to severe earthquake, the displacement controller restrains excessive story displacement of the building and controls the distribution of story displacement as designed one. Using this system, unified distribution of story displacement can be obtained by restraining excessive local displacements caused by the irregularity of stiffness and / or strength distribution in a building or the contribution of higher modes. In this study the design method is proposed to calculate necessary damper quantity by energy response, equalizing input energy from earthquake and consuming energy by structures and damper at design displacement level. The effectiveness of this design method is verified by shaking table tests installed in Tohoku University and furthermore investigated by analyses for reinforced concrete buildings considering various conditions such as the distribution of stiffness and / or strength and earthquake characteristics. Less