Modeling of the thrust and torque acting on shield machines during tunneling |
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| Affiliation: | 1. Istanbul Technical University, Mining Engineering Department, 34469 Maslak-Istanbul, Turkey;2. Bulent Ecevit University, Mining Engineering Department, Zonguldak, Turkey;3. Taisei Corporation, Marmaray Project, Sirkeci Construction Site, Istanbul, Turkey;1. School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China;2. College of Biotechnology, Guilin Medical University, Guilin, Guangxi 541100, China;3. China Railway Engineering Equipment Group Co., Ltd, Zhengzhou 450000, China;1. State Key Laboratory for Disaster Reduction in Civil Engineering, Shanghai 200092, China;2. Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China;3. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;4. Shanghai Tunnel Engineering Co. Ltd., Shanghai 200127, China;1. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China;2. School of Civil Engineering, Chongqing University, Chongqing 400045, China;3. College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450000, China |
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| Abstract: | The paper analyzes the total load in the shield tunneling process. The cutterhead load is the most complicated component which provides a real-time response to geological conditions and operating states. This study calculates the normal and tangential loads on cutterhead by decoupling the cutterhead-soil system on excavation face. Then a comprehensive consideration is made of the influences of the overburden, the soil cutting, the chamber support, and the friction between the shield and the soil on loads. This study establishes a predicting model for the total load that fully reflects the influences of geological, operating, and structural parameters. The model is applied into two cases. Its effectiveness is verified by comparing the load calculated by the model, measured during tunneling and predicted by the Krause empirical model. The paper provides a reference for load designs and parameter controls during construction. |
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