Load characteristics study with a multi-coupling dynamic model for TBM supporting system based on a field strain test

Wu, Hanyang; Huo, Junzhou; Meng, Zhichao; Lin, Xiaofei; Xie, Liyang; Zhang, Zhange

doi:10.1016/j.tust.2019.103016

Cited by 9 publications

(4 citation statements)

References 14 publications

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“…12 The force of the gripper shoe on the left and right surrounding rocks Although there are advanced testing and exploration techniques to predict the geological conditions of tunneling construction, there are still some unexpected situations. For example, the arch and side walls of the tunnel collapse due to uneven stress, and the disturbance that affects the stratum under harsh underground conditions increases the safety hazards [25][26]. Grasping the relationship between the forces acting on the gripper shoe tunneling system is the key to the successful completion of the established construction tasks.…”

Section: Fig 10 α Variation Diagram Under the Deflection Of The Main ...mentioning

confidence: 99%

Dynamic Analysis of the Propulsion Process of Tunnel Boring Machines

Liao,

Zhao,

Kang

et al. 2024

Manufacturing Technology

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In order to improve the excavation efficiency, and consider the influence of the interference force generated by the propulsion system on the design and service life of key components, it is necessary to correct the trajectory of the tunnel boring machine when excavating curved tunnels. The mechanical model of tunnel boring machine propulsion system is established, and its dynamic characteristics are established by ADAMS software. By analysing the thrust force of hydraulic cylinder (1500KN) and the three steering angles of 0.5°, 1° and 2°, the change of the angle between the thrust hydraulic cylinder and the key components of the gripper shoe hydraulic cylinder is studied, and the relationship between the tightening force and the horizontal propulsion force of the gripper shoe hydraulic cylinder is also studied. The research reveals the difference of the changing laws of propulsive force and tighteningforce under different steering angles. The results are helpful to study the optimal matching relationship between mechanical model and driving parameters of TBM, and have important theoretical significance to further improve the driving efficiency and stability of TBM.

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Section: Fig 10 α Variation Diagram Under the Deflection Of The Main ...mentioning

confidence: 99%

Dynamic Analysis of the Propulsion Process of Tunnel Boring Machines

Liao,

Zhao,

Kang

et al. 2024

Manufacturing Technology

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“…As the core component in direct contact with the surrounding rock, the disc cutter bears the impact load from the rock-soil body during excavation, and the load is transferred to the cutterhead to cause the vibration [10]. In addition, in the process of equipment operation, the vibration generated by the motor, gears and other equipment is also inevitable [11]. But these two types of vibrations often differ significantly in intensity, making them distinguishable.…”

Section: Introductionmentioning

confidence: 99%

Review on Vibration Monitoring and Its Application during Shield Tunnel Construction Period

Yang,

Fang,

Wang

et al. 2024

Buildings

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With the rapid development of metro construction, shield machines inevitably have to traverse a variety of complex geological conditions, leading to the frequent occurrence of geological disasters, equipment failures, building vibration and other problems. Vibration, as an important feature of the shield tunneling process, has received more and more attention in recent years. This paper summarizes the relevant research progress of vibration monitoring during shield construction from 2015 to 2023. It analyzes the shield vibration generation mechanism, monitoring methods and application areas. Firstly, the shield vibration type is divided into mechanical vibration triggered by internal excitation and forced vibration triggered by external excitation, and the principles of vibration generated by shield main bearing, gearbox and disc cutter are discussed. Then, the commonly used vibration monitoring methods are outlined according to the installation location of the sensors (inside and outside of the shield). Finally, the applications of vibration signals in the diagnosis of shield faults, the identification of geologic conditions, and the evaluation of the current status of the interference with the buildings are summarized. This paper discusses the development trend of vibration monitoring during shield tunneling based on the current research situation and the current technology level, which provides valuable insights to enhance the safety and intelligence of shield construction.

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“…Support system stiffness is composed of hydraulic system stiffness, mechanical structure stiffness, and contact stiffness [12,13]. Wu et al [14] established a multi-coupling dynamic model for support systems of TBM and carried out a multi-position dynamic strain test based on practical engineering to calibrate the dynamic model. They pointed out that the support directly affected the tunneling efficiency of TBM.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Static and Dynamic Stiffness Characteristics of Support Hydraulic System of TBM

Tao

Lei

Liu

et al. 2019

Chin. J. Mech. Eng.

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Full-face hard rock tunnel boring machines (TBM) are essential equipment in highway and railway tunnel engineering construction. During the tunneling process, TBM have serious vibrations, which can damage some of its key components. The support system,an important part of TBM, is one path through which vibrational energy from the cutter head is transmitted. To reduce the vibration of support systems of TBM during the excavation process, based on the structural features of the support hydraulic system, a nonlinear dynamical model of support hydraulic systems of TBM is established. The influences of the component structure parameters and operating conditions parameters on the stiffness characteristics of the support hydraulic system are analyzed. The analysis results indicate that the static stiffness of the support hydraulic system consists of an increase stage, stable stage and decrease stage. The static stiffness value increases with an increase in the clearances. The pre-compression length of the spring in the relief valve affects the range of the stable stage of the static stiffness, and it does not affect the static stiffness value. The dynamic stiffness of the support hydraulic system consists of a U-shape and reverse U-shape. The bottom value of the U-shape increases with the amplitude and frequency of the external force acting on the cylinder body, however, the top value of the reverse U-shape remains constant. This study instructs how to design the support hydraulic system of TBM.

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Load characteristics study with a multi-coupling dynamic model for TBM supporting system based on a field strain test

Cited by 9 publications

References 14 publications

Dynamic Analysis of the Propulsion Process of Tunnel Boring Machines

Dynamic Analysis of the Propulsion Process of Tunnel Boring Machines

Review on Vibration Monitoring and Its Application during Shield Tunnel Construction Period

Nonlinear Static and Dynamic Stiffness Characteristics of Support Hydraulic System of TBM

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