摘要
现依托贵阳市轨道交通3号线一期工程北京路站,研究中心城区采用暗挖法实施的换乘车站方案。通过研究,在有条件情况下换乘方式采用十字换乘。根据客流预测核算,站台宽度为15.5 m;结合设备限界、管线敷设、施工误差等要求,车站净宽为22.8 m,为大跨度车站。当中心城区车站施工的变形控制要求高,暗挖车站断面跨度大时,可采取中洞法施工。可通过数值模拟,对暗挖结构初支及二衬进行受力分析,并且通过计算可以发现:当采取一定的初支措施时,中洞法对变形控制能够起一定的作用;通过暗挖断面优化、全包防水及接缝防水加强,来确保暗挖车站的防水质量;中洞法暗挖车站结构型式可以满足抗震要求。
Based on Beijing Road Station of Guiyang Metro Line 3,the scheme of interchange station in the central urban area by the undermining method is studied.According to the study,the cross interchange mode is adopted under the certain conditions.According to the passenger flow forecast,the platform width is 15.5 m.Combined with the requirements of equipment clearance,pipeline laying,construction error,etc.,the clear width of station is 22.8 m,which is a long-span station.When the deformation control requirements of the station construction in the central urban area are high and the section span of the undermined station is long,the center drift method can be used for construction.Through the numerical simulation,the stress analysis of the primary support and secondary lining of the undermined structure is carried out.And through the calculation,it can be found that when certain primary support measures are taken,the center drift method can play a certain role in deformation control.The waterproof quality of the undermined station can be ensured by the optimization of the undermining section,and the whole package waterproof and joint waterproof reinforcement.The structure type of the undermined station by the center drift method can meet the seismic requirements.
作者
王春凯
午鹏奇
李云鹰
WANG Chunkai;WU Pengqi;LI Yunying
出处
《城市道桥与防洪》
2020年第5期309-313,324,M0030,共7页
Urban Roads Bridges & Flood Control
关键词
换乘车站
暗挖法
防水
中洞法
抗震
interchange station
undermining method
waterproof
center drift method
seismic resistance
