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  杜修力,刘思奇,刘洪涛,蒋家卫.拱形与矩形断面地铁车站结构地震反应比较研究[J].震灾防御技术,2019,14(3):465-476, DOI:10.11899/zzfy20190301.

拱形与矩形断面地铁车站结构地震反应比较研究
摘要:    采用动力时程法开展了拱形与矩形断面地铁车站结构地震反应的研究,分析了拱形断面和矩形断面地铁车站结构的关键截面在地震作用下的内力及变形的差异。结果表明:相比于矩形断面车站结构,拱形断面车站结构顶板边缘处和侧墙顶端的弯矩明显减小,车站侧墙顶端和顶板边缘处因承受弯矩过大而发生破坏的可能降低;内柱截面的轴压比明显减小,且与侧墙的轴压比差异显著减小,受力分配更为合理;拱形车站结构顶、底板的相对位移、内柱和侧墙的位移角相对较小。在已模拟的工况下拱形车站内力分布形式更为合理,水平变形相对较小,更有利于抗震。
作者单位
杜修力 北京工业大学, 城市与工程安全减灾教育部重点实验室, 北京 100124 
刘思奇 北京工业大学, 城市与工程安全减灾教育部重点实验室, 北京 100124 
刘洪涛 北京工业大学, 城市与工程安全减灾教育部重点实验室, 北京 100124 
蒋家卫 北京工业大学, 城市与工程安全减灾教育部重点实验室, 北京 100124 
关  键  词:地铁车站结构  拱形断面  地震反应
DOI:10.11899/zzfy20190301
基金项目:国家重点研发计划项目(2018YFC1504302),国家自然科学基金创新研究群体项目(51421005)
收稿日期:2019-03-02
作者简介:杜修力,男,生于1962年,教授。主要从事地震工程与防灾工程领域研究。E-mail:duxiuli@bjut.edu.cn
通讯作者:
Comparative Study on Seismic Responses of Arch and Rectangular Cross-section Subway Stations
Abstract:      The dynamic time history method is used to study the seismic responses of arch and rectangular cross-section subway station structures, the difference of internal force and deformation between the key sections of arch and rectangular cross-section subway stations under seismic action is analyzed. The results show that the bending moment at the edge of the roof and the top of the side wall of the arch cross-section stations decreases significantly, and the possibility of damage at those parts decreases due to the excessive bending moment compared with rectangular cross-section stations. The axial compression ratio of the inner column of arch cross-section station decreases greatly, and the difference between the axial compression ratio of side wall decreases significantly too with reasonable force distribution. Relative displacement between roof and floor, displacement angle of inner column and side wall of arch station are relatively smaller. Under the simulated conditions, the internal force distribution of arch station is more reasonable, with the relatively smaller horizontal deformation, which is of relatively strong earthquake resistance.
Keywords:  Subway station structure  Arch section  Earthquake response
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