Basic Research on Vibration Control Building Structural System Including Uplift Mechanism

包括提升机构在内的振动控制建筑结构体系的基础研究

基本信息

批准号：
16560520
负责人：
AZUHATA Tatsuya
金额：
$ 2.05万
依托单位：
National Institute for Land and Infrastructure Management
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560520/
关键词：
Uplift Vibration control structural system Seismic response reduction Base plate Rocking Energy dissipation mechanism Modal analysis Structure with multi-spans 浮き上がり降伏型ベースプレート簡易地震応答予測衝突

项目摘要

To reduce seismic damage of buildings, some structural systems which are intentionally allowed to uplift during an earthquake have been proposed. These systems can be generally applied to buildings with large aspect ratio, most of which has only single span. And these buildings will wholly uplift around the bearing on the one side. On the other hand, we propose ‘vibration control systems including uplift mechanism', assuming that seismic damage of buildings with multi-spans can be also reduced even if they are allowed to uplift partially, not wholly. In this research, we develop a method to make buildings uplift and examine seismic performance of the proposed structural systems.The achievements of this research are summarized as follows ;(1)Energy dissipation mechanismSeismic energy dissipation mechanism of buildings allowed to uplift wholly or partially were clarified.(2)Structural method to make buildings upliftA structural method to make buildings uplift using yielding base plates was proposed. The yielding base plates are attached at each column base. The restoring force characteristics of the base plates were cleared based on the large scale-tests.(3)FEM time history response analysis methodApplicability of FEM time history response analysis method, which can analyze impact effects and non-linear behavior of base plates particularly, to buildings allowed to uplift was shown comparing analysis results with past experimental results.(4)Seismic response reduction effects of proposed structural systemsSome case studies using a time history analysis method were carried out to verify seismic performance of the proposed systems. And their energy dissipation mechanism was shown.(5)Modal analysis on buildings allowed to upliftTo understand seismic response characteristics of buildings allowed to uplift more generally, a modal analysis method was applied. Especially, effects of higher modes to dynamic behavior of them were shown.

为了减少建筑物的地震损害，已经提出了某些在地震期间有意提升的结构系统。这些系统通常可以应用于具有较高纵横比的建筑物，其中大多数只有单个跨度。这些建筑物将在一侧的轴承周围完全提升。另一方面，我们提出了“包括振动机制在内的振动控制系统”，假设即使允许部分升高而不是完全升高，也可以减少具有多跨度的建筑物的地震损害。在这项研究中，我们开发了一种方法来使建筑物的隆起和考试的地震性能在拟议的结构系统中进行。（1）允许完全或部分地阐明建筑物的建筑物的结构上的建筑物的结构构建构建方法，将建筑物的建筑物完全或部分地提升。屈服的基板连接在每个列底座。基于大规模测试的基本板的恢复力特征。（3）FEM时间历史响应分析fem时间历史记录响应分析方法的方法的可使用方法，该方法可以分析基础平板的影响效应和非线板的非线性行为，尤其是允许建筑物的建筑物，显示了与过去的实验结果相比的分析效果（4）启动的效果。提出的系统。（5）对允许建筑物的模态分析，以提高允许的建筑物的建筑物的地震反应特征，允许更普遍地提高建筑物的抗震特征，应用了模态分析方法。特别是，尤其是显示了较高模式对它们的动态行为的影响。