北京地铁五号线天坛东门站施工监测技术及受力特性研究

Construction monitoring and stress analysis for Tiantan-East-Gate Station on Beijing subway line 5

通过对天坛东门站施工过程中围岩变形、压力和结构内力进行系统监测,对中洞法施工过程中的围岩及车站结构的受力特点进行了分析;提出了一套适合大跨度浅埋车站的施工监控技术,在天坛东门站的复杂施工过程中得到了成功应用。文章对中洞法施工方案的合理性及施工中的安全性进行了论证,并为中洞法施工总结出了可供推广的经验。

Monitoring was carried out for the rock deformation, rock pressure and stresses in the structure of Tiantan - East - Gate Station during construction. Analysis was performed for the behavior of surrounding rocks and station structure in the process of construction with advanced central boring. Monitoring techniques adaptable to long span shallow station were successfully adopted in the complicated construction process of this station. The paper explained and proved the feasibility and safety of the excavation with advanced central boring and summarized the experience accumulated for its further application.