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Research on Connecting Method Between Hysteretic Damper and Reinforced Concrete Frame

滞回阻尼器与钢筋混凝土框架连接方法研究

基本信息

批准号：
18560550
负责人：
INAI Eiichi
金额：
$ 2.46万
依托单位：
Yamaguchi University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560550/
关键词：
Vibration Control Cost Reduction Damper Joint

项目摘要

Recently, pillar type hysteretic dampers have been applied to high-rise reinforced concrete (R/C) buildings. This pillar is originally H-shaped steel and has low yield strength steel in the web at the middle height. In R/C frames, the both upper and lower ends of the pillar are usually connected to the R/C girders using end plates and anchor bolts, and also encased by R/C base to increase the shear deformation of the web. However, the stress transfer mechanism between the pillar and the R/C base has not been clarified. The inelastic behavior of the R/C base has not been sufficiently investigated, which has influence on the performance of the damper. Furthermore, this type of connection using anchor bolt is very complicated and not economical in building construction. The purpose of this research project is to develop a new and more rational connecting method of pillar type hysteretic dampers and to clarify the stress transfer mechanism and the cyclic behavior of the pillar type hysteretic damper.The following results are obtained from this research project.1. A new type connection, which has only stud shear connectors at the flange of H-shaped steel in the R/C base, was developed. In the experiments, 1/2 scale pillar type hysteretic damper specimens using this connection showed excellent performance as the damper.2. As for the behavior of the R/C base, models for the stress transfer mechanism and the load-deformation relationship were obtained from the analysis of the experimental data. The design method for the R/C base was developed.3. A model for the load-deformation relationship of the pillar type hysteretic dampers was proposed. The model is considering the inelastic flexural and shear deformations of the R/C bas, and can be used in earthquake response analysis of buildings with the pillar type hysteretic dampers.

近年来，柱型滞回阻尼器已被应用于高层钢筋混凝土（R/C）建筑。该柱原为H型钢，中间高度腹板处为低屈服强度钢。在钢筋混凝土框架中，柱的上下两端通常通过端板和锚栓与钢筋混凝土梁连接，并被钢筋混凝土基础包住，以增加腹板的剪切变形。然而，柱与R/C基底之间的应力传递机制尚未阐明。R/C基础的非弹性特性尚未得到充分的研究，这对阻尼器的性能有影响。此外，这种使用锚栓的连接类型在建筑结构中非常复杂且不经济。本课题的研究目的是开发一种新型的、更合理的柱型滞回阻尼器连接方式，阐明柱型滞回阻尼器的应力传递机理和循环性能，取得了以下研究成果.提出了一种在钢筋混凝土基础上的H型钢翼缘处仅设置栓钉剪力连接件的新型节点。在1/2缩尺的柱型滞回耗能器试件试验中，采用这种连接方式的阻尼器表现出了良好的性能.对于R/C基层的性能，通过对实验数据的分析，得到了应力传递机制和荷载-变形关系的模型。提出了R/C底座的设计方法.建立了柱型滞回阻尼器的荷载-变形关系模型。该模型考虑了钢筋混凝土基础的非弹性弯曲和剪切变形，可用于柱型滞回阻尼器结构的地震反应分析。