Application of viscous dampers in collapse resistance of truss structures

2018 International Conference on Civil, Architecture and Disaster Prevention

土木建筑工程

Menghong, Wang^1 ; Xiaonan, Cao^1

School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing

100044, China^1

关键词: Accidental loads;    Collapse resistance;    Grid structures;    Incremental dynamic analysis;    People densities;    Safety requirements;    Space structure;    Viscous dampers;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012080/pdf
DOI  :  10.1088/1755-1315/218/1/012080

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

With the benefits of variable shape and large scale, the long-span space structure can realize the concept of the building appearance by the designer. However, China is in the area where earthquakes occur frequently, with more than one hundred reported occurrences of earthquakes in the past 100 years. This type of building has the characteristics of big importance, high people density, and great influence. During the time of the disaster, it also functions as a temporary evacuation site. It is required that it not only satisfies safety requirement by the code, but also that it meets the demand of resisting continuous collapse under the action of a strong accidental load to guarantee the safety of people's lives and property. In this paper, a numerical study is conducted on an actual grid structure using the method of incremental dynamic analysis (IDA), which locates the weak spots of the structure. Viscous dampers are added to the structure for studying their damping effect on the large span truss structures under seismic waves. And the rational arrangement of the damper in the truss structures is proposed, which provides a reference for collapse-resistant design.