结构工程师2025，Vol.41Issue(4)：69-79,11.DOI:10.15935/j.cnki.jggcs.202504.0009
新型框架-阻尼框筒结构体系在地铁上盖开发中的应用研究
Study on Application of Frame-Damping-Framed-Tube Structure in Upper Cover of Urban Rail Transit
摘要
Abstract
The frame-damping-framed-tube structure is a new structural system in which the"damping-framed-tube"is used to approximate the core tube,with the frame bearing all vertical loads.This paper investigates the feasibility of applying this new structural system in the development of upper cover of urban rail transit.Elastic analysis under frequently occurred earthquake and elastoplastic time history analysis under rarely occurred earthquake were carried out.Analysis results show that the elastic and elastoplastic inter-story drift of the well-designed upper cover frame-damping-framed-tube structure of urban rail transit can meet the requirements of design standards.Under rarely occurred earthquake,the damping walls yield adequately and dissipate energy,with an additional damping ratio of whole structure up to 1.82%and that of upper cover structure up to 3.45%,showing excellent energy dissipation and seismic mitigation effects.Compared with conventional frame-core tube structures,the elimination of the core tube reduces the dead load of the upper cover structure,improves the load distribution in the transfer level,and benefits the design of the structure below the platform.It indicated that the new structure is suitable for the development of upper cover of urban rail transit.This paper also discusses the influence of the structure below the platform on the performance of frame-damping-framed-tube structure.Compared to being embedded on the ground,the seismic response of high floors of the upper cover frame-damping-framed-tube structure is amplified due to the whipping effect.Therefore,it is necessary to appropriately increase the stiffness and bearing capacity of the damping walls on the high floors to fully utilize their energy dissipation capacity.关键词
框架-阻尼框筒/地铁上盖/钢板阻尼墙/抗震性能Key words
frame-damping-framed-tube structure/upper cover of urban rail transit/steel plate damping wall/seismic performance分类
建筑与水利引用本文复制引用
甘懿德,顾伟华,崔家春..新型框架-阻尼框筒结构体系在地铁上盖开发中的应用研究[J].结构工程师,2025,41(4):69-79,11.基金项目
上海市科技计划项目(21DZ1203401) （21DZ1203401）
