压顶梁与抗拔桩对地铁车站结构内力和变形的影响分析  

Analysis of the Impact of Coping Beam and Uplift Pile on Internal Force and Deformation of Metro Stations Structure

作　　者：杜昀峰 黄斐 DU Yunfeng;HUANG Fei(China Railway Engineering Design and Consulting Group Co.,Ltd.Beijing 100055,China;China Railway Tunnel Consultants Co.,Ltd.Guangzhou 511458,China)

机构地区：[1]中铁工程设计咨询集团有限公司,北京100055 [2]中铁隧道勘察设计研究院有限公司,广州511458

出　　处：《广东土木与建筑》2022年第8期52-55,共4页Guangdong Architecture Civil Engineering

摘　　要：地铁车站抗浮设计时,选择合适的抗浮措施不仅能节省工程投资,还能提高地铁运营的安全性。为了研究压顶梁和抗拔桩对车站结构内力和变形的影响,对抗浮措施的选择提出合理建议,以成都某地铁车站为例,对不同抗浮措施的3种工况进行结构数值计算。对比3种工况的计算结果,表明抗拔桩对车站结构的内力和变形有改善作用。考虑工程投资的经济性,建议车站抗浮措施优先采用压顶梁,当采用压顶梁无法满足抗浮稳定性计算,或车站结构变形过大、结构整体配筋率过大时,可增设抗拔桩以满足抗浮稳定性计算,并改善车站结构内力和变形。In the anti-floating design of subway stations,choosing appropriate anti-floating measures can not only save engineering investment,but also improve the safety of metro operation.In order to study the influence of the top beam and anti-pulling pile on the internal force and deformation of the station structure,and make reasonable suggestions on the choice of anti-floating measures,taking a station of Chengdu Metro as an example,the numerical calculation of the station structure under three working conditions of different anti-floating measures is carried out.Comparing the calculation results of the three working conditions,it is shown that the uplift piles can improve the internal force and deformation of the station structure.Considering the economics of project investment,it is recommended that the anti-floating measures of the station should priority to use the topping beam.When the coping beam cannot meet the calculation of anti-floating stability,or the deformation of the station structure is too large,the overall reinforcement ratio of the structure is too large,the anti-pulling pile can be added to meet the calculation of anti-floating stability,and the internal force and deformation of the station structure can be improved.

关 键 词：地铁车站 抗浮措施 压顶梁 抗拔桩 结构内力 结构变形 

分 类 号：U231.4[交通运输工程—道路与铁道工程]