地震作用下高架车站结构的力学响应研究

Study on the Mechanical Response of Elevated Station Structures under Earthquake Action

文中针对南昌一高架车站的地震响应进行了研究,基于当地地震环境和规范,选取了6度设防烈度和EI Centro地震波进行分析。模态分析显示,车站结构自振特性良好,符合设计标准。随后,通过时程反应分析,探讨了多遇及罕遇地震下,主要构件的位移和加速度变化,结果表明结构表现稳定,混凝土损伤主要表现为受拉损伤。

The seismic response of an elevated railway station in Nanchang was studied in this article.Based on the local seismic environment and regulations,a seismic intensity of 6 degrees and EI Centro seismic waves were selected for analysis.Modal analysis shows that the station structure has good natural vibration characteristics and meets the design standards.Subsequently,through time history response analysis,the displacement and acceleration changes of the main components under frequent and rare earthquakes were explored.The results showed that the structure exhibited stability,and concrete damage was mainly manifested as tensile damage.