Modeling and Prediction for the thrust on EPB TBMs under different geological conditions by considering mechanical decoupling

作     者：ZHANG Qian SU CuiXia QIN QingHua CAI ZongXi HOU ZhenDe KANG YiLian ZHANG Qian;SU CuiXia;QIN QingHua;CAI ZongXi;HOU ZhenDe;KANG YiLian

作者机构：Key Laboratory of Modern Engineering Mechanics Tianjin University Tianjin 300072 China China Railway Construction Heavy Industry Co. Ltd. Changsha 410100 China College of Engineering and Computer Science Australian National University Canberra ACT 0200 Australia 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2016年第59卷第9期

页      面：1428-1434页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 081901[工学-采矿工程] 0819[工学-矿业工程] 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 the National Natural Science Foundation of China (Grant Nos. 11127202 & 11302146) 

主　　题：EPB TBMs thrust prediction different geological conditions mechanical decoupling 

摘      要：EPB TBMs(Earth pressure balance Tunneling Boring Machines) are extensively used in tunneling constructions because of its high efficiency and low disturbance on structures above ground. It is critically significant to predict the thrust acting on TBMs under different geological conditions for both the design of power system and the control of tunneling process. The interaction between the cutterhead and the ground is the core of excavation, through which geological conditions determine the thrust re-quirement combined with operating status and structural characteristics. This paper conducted a mechanical decoupling analysis to obtain a basic expression of the cutterhead-ground interactive stress. Then more engineering factors(such as cutterhead topological structure, underground overburden, thrusts on other parts, etc.) were further considered to establish a predicting model for the total thrust acting on a machine during tunneling. Combined with three subway projects under different geological conditions in China, the model was verified and used to analyze how geological, operating and structural parameters influence the acting thrust.