建筑钢结构进展2024，Vol.26Issue(6)：105-114,10.DOI:10.13969/j.cnki.cn31-1893.2024.06.011
风与地震作用下平面索网幕墙系统的动力性能研究
Dynamic Performance for a Cable-Net Supported Curtain Wall System Under Wind and Seismic Loadings
摘要
Abstract
The cable-net supported glass facade(CSGF)is widely used in large public buildings.Due to its low damping,low stiffness,and strong non-linearity,the CSGF is subject to sudden changes in tension,excessive deformation,and panel damage under strong wind and seismic excitations.This paper established a refined numerical model of the CSGF system to quantify the effect of the adjacent main structures on the facade dynamic performance.The cable-net responses as well as the panel and sealant safety state under wind and seismic loadings were analyzed,and the calculated wind vibration factors were compared with the code reference values.The results show that the facade frequency considering the effect of main structures is reduced by an average of 12%.The peak displacement ratio of the central cable under seismic loading reaches to 6.5,much larger than that of the wind-induced response,indicating that the effect of main structures should be considered in the CSGF seismic response.For two hazards simultaneous excitation,the increase in cable-net displacement is greater than tensions,reflecting that the displacements are more sensitive to external excitation change.The top glass panel and sealant stresses have exceeded the design strength and should be paid more attention to during operation and maintenance.Moreover,the CSGF wind-induced response results are statistically analyzed to obtain the wind vibration factors for engineering design.关键词
索网幕墙系统/非线性/主结构影响/风与地震作用/动力性能/风振系数Key words
cable-net supported facade system/non-linearity/effect of main structure/wind and seismic loading/dynamic performance/wind vibration factor分类
建筑与水利引用本文复制引用
王国威,张鹏,张明,卢文胜..风与地震作用下平面索网幕墙系统的动力性能研究[J].建筑钢结构进展,2024,26(6):105-114,10.基金项目
国家自然科学基金(52178501),同济大学土木工程Ⅰ类高峰学科建设经费(2022-3-ZD-06),江西理工大学校级纵向科研项目(205200100550) （52178501）
