华东交通大学学报2016，Vol.33Issue(3)：13-22,10.
地铁地下车站抗震性能分析方法
Analysis Method of Seismic Behavior for Metro Underground Station
周灿朗 1龙喜安1
作者信息
- 1. 广州地铁设计研究院有限公司，广东 广州 510010
- 折叠
摘要
Abstract
The two analysis methods of structural seismic (response displacement method and time history analysis method) are discussed in this paper for the underground station based on the actual project of Li Cun Station in Metro line No.3 in Foshan. The response displacement method is on the premise of seismic response calculation of one-dimensional soil layer, and is on the basis of deformation value of the surrounding soils under earthquake action. Two-dimensional structure model is established for the subway station and the equivalent earthquake force is calculated by using the deformation value, which is loaded in the structural model in static form. The re-sults of seismic response and static method are compared and the change law of internal force is summarized. Be-sides, the time history analysis method is on the basis of dynamic finite element theory. Limited soil from half-space should be selected and the viscous-spring artificial boundary should be used for this method. Also the record values of seismic wave must be adjusted reasonably. And the rayleigh damping is used which has the ad-vantages of convenient calculation,memory saving and high accuracy. A whole calculation model is established which include the structure and the surrounding soil based on Midas GTS NX software. And the natural frequen-cy and vibration modes of the structural system are solved through the modal analysis. The dynamic characteris-tics of underground structures is simulated under the seismic load. And the displacement time history response and deformation law are revealed under earthquake action of the subway station. The article provides the basis for a seismic design for subway station through the two methods of seismic performance analysis.关键词
地铁车站/结构抗震/反应位移法/非线性时程分析法/Midas GTS NXKey words
metro station/structural seismic/response displacement method/nonlinear time history analysis method/Midas GTS NX分类
建筑与水利引用本文复制引用
周灿朗,龙喜安..地铁地下车站抗震性能分析方法[J].华东交通大学学报,2016,33(3):13-22,10.
