Synchronous shield tunnelling technology combining advancement and segment fabrication:Principle,verification and application

作     者：Yeting Zhu Yanfei Zhu Elton J.Chen Yixin Zhai Rui Min Bin Tang Xin Huang 

作者机构：Shanghai Tunnel Engineering Co.Ltd.Shanghai 200232China School of Civil&Hydraulic EngineeringHuazhong University of Science&TechnologyWuhanHubei 430074China National Innovation Center for Digital ConstructionWuhanHubei 430074China Department of Geotechnical EngineeringCollege of Civil EngineeringTongji UniversityShanghai 200092China 

出 版 物：《Underground Space》 (地下空间（英文）)

年 卷 期：2023年第13卷第6期

页      面：23-47页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：supported by Shanghai Tunnel Engineering Co.,Ltd.,China(Grant Nos.2020-SK-1,2021-SK-22-7,and 2023-SK-07) Shanghai Rising-Star Program,China(Grant No.20QB1405000) 

主　　题：Shield tunnel Shield machine Model test Shield tunnelling Synchronous assembly 

摘      要：Through the active control of shield thrust system oil pressures,a synchronous shield tunnelling technology combining advancement and segment fabrication was *** key to this technology was to completely exploit the additional stroke of the hydraulic jacks generated by the axial insertion of a key block to assemble the *** the tunnelling project of the Shanghai Airport Railway Link Line as a demonstration project,this paper uses a large model test platform for this synchronous technology.A single-ring construction process along a straight line was simulated,in which the theoretical external loads were implemented on the shield *** feasibility and reliability of this synchronous technology were evaluated considering the accuracy of total thrust force control,maintenance of tunnelling speed and shield postures and segment *** effectiveness of the redistribution principle for the missing thrust force due to the withdrawal of cylinders located in the segment fabrication region was ***,some other interesting phenomena were observed in the practical application in addition to the model *** technology primarily realizes synchronous assembly by improving the control of the propulsion system of conventional shield machines without any transformation of the shield machine’s primary structure,segment patterns or excavation *** proposed method has good adaptability and a low construction cost,which will be beneficial for future long-distance tunnelling projects.