Electromechanical coupling dynamics of TBM main drive system

Huo, Junzhou; Wu, Hanyang; Sun, Wei; Zhang, Zhange; Wang, Liping; Dong, Jianghui

doi:10.1007/s11071-017-3831-4

Cited by 28 publications

(12 citation statements)

References 17 publications

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“…Huo et al [21,22] established multi-degreeof-freedom coupling dynamic models for the disc cutter and cutter system and revealed the dynamic characteristics of the disc cutter and cutter system. In addition, Huo et al [23,24] presented multi-coupling dynamic models for the TBM main drive and supporting systems and carried out a field strain test to verify the models. Festa et al [25] set up a kinematic model for a TBM based on theoretical and geometrical considerations, and the ground displacements were obtained through the model and verified using the TBM monitoring data.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics Analysis with Multi-Directional Coupling in a TBM Mainframe

Lin

Xia

et al. 2019

Chin. J. Mech. Eng.

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The cutterhead of a full-face rock tunnel boring machine (TBM) is constantly subjected to varying impact and dynamic loads during tunneling processes, resulting in relatively large vibrations that could easily lead to fatigue cracking of the entire machine and affect the tunneling performance and efficiency. To explore the dynamic characteristics of the TBM mainframe, a TBM from a water-diversion project is investigated in this research. According to the TBM vibration transmission route, an equivalent dynamic model of the TBM mainframe is established using the lumped-mass method in which the relevant dynamic parameters are solved. Additionally, the dynamic response characteristics of the TBM mainframe are analyzed. The results indicate that the vibration levels in three directions are approximately the same, the multi-directional vibration of the cutterhead is more intense than that of other components, and the vibration and external excitation exhibit identical change trends. A set of vibration field tests is performed to analyze the in situ dynamic responses of the mainframe and verify the correctness of the dynamic model. The theoretical and measured acceleration values of the TBM mainframe have the same magnitude, which proves the validity of the dynamic model and its solution. The aforementioned results provide an important theoretical value and practical significance for the design and assessment of the TBM mainframe.

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Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics Analysis with Multi-Directional Coupling in a TBM Mainframe

Lin

Xia

et al. 2019

Chin. J. Mech. Eng.

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“…With the rapid development of tunnel constructions, tunnel boring machines (TBMs) are widely employed in tunnel excavation due to their high excavation efficiency, excellent safety, and less ground disturbance [1,2]. Disc cutters mounted on TBM cutterhead are the main rock breaking tools, and cutter rings interact with and cut rocks directly during the TBM tunneling process [3,4].…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Optimization Design for Structural Parameters of TBM Disc Cutter Rings Based on FAHP and SAMPGA

Lin

Xia

2019

Advances in Civil Engineering

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As a key component of tunnel boring machines (TBMs), the disc cutter ring and its structural parameters are closely related to the TBM tunneling quality. Literature review shows that investigations on optimization design methods for cutter ring structure are seriously insufficient. Therefore, in this paper, a multiobjective optimization design model of structural parameters for disc cutter rings is developed based on the complex geological conditions and the corresponding cutter ring structure design requirements. The rock breaking capability, energy consumption, load-bearing capability, wear life, and wear uniformity of disc cutter are selected as the objectives, and the geometric structure of cutter rings, ultimate load-bearing capability, and cutterhead drive performance are determined as constraints. According to the characteristics of this model, a self-adaptive multipopulation genetic algorithm (SAMPGA) is utilized to solve the optimization problem, and the Fuzzy analytical hierarchy process (FAHP) is employed to calculate weight coefficients for multiple objectives. Finally, the applicability of the proposed method is demonstrated through a case study in a TBM project. The results indicated that the rock breaking performance and service life of the disc cutter are improved after optimization by using the proposed method. The utilization of SAMPGA effectively solves the premature local convergence problems during optimization. The geological adaptability should be considered in the cutter ring structure design, which can be realized by using the proposed method based on the suitable weight coefficients.

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“…Cutterhead system is a key working component of the full face hard rock Tunnel Boring Machine (TBM), which endures strong, random, and multi-point distributed impact loads, leading to structure vibration, fatigue, crack damage and other mechanical failures (Huo et al, 2017;Cai, et al, 2017). Hence, accurate analysis and evaluation of cutterhead loads are closely related to the whole machine control parameters matching, system dynamic as well as the key structure fatigue life prediction.…”

Section: Introductionmentioning

confidence: 99%

A Prediction Method for TBM Cutterhead Dynamic Tunneling Performance under Typical Composite Geological Conditions

Ling¹,

Yang²,

Wu³

2019

Mech. Eng. Sci.

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The cutterhead system is a core component of TBM equipment, which works in the extremely severe environment, and the strong impact loads result in severe vibration, crack, damage failure and other engineering failures. Accordingly, the key for cutterhead system structure design and parameter matching is to evaluate and predict cutterhead tunneling performance reasonably. In this paper, a prediction method for TBM cutterhead dynamic tunneling performance is proposed under the typical composite geological conditions, based on the CSM model of multi-cutters and cutter loads field test data. Then an actual TBM cutterhead of a water conservancy project is taken as an example, a spatial three-dimensional separation zone model for cutterhead tunneling is established under the typical geological condition, and the parameters influence rules of cutterhead tunneling performance are analyzed. The results show that, the cutterhead loads and specific energy change rules with different parameters are basically similar. Moreover, under the condition of penetration p=10mm, the cutterhead bending moment coefficient of variation magnitude exceeds 20%, which is the maximum, and the normal cutter spacing optimal value is 95mm. Also, when the normal cutter spacing is kept constant in 85mm, the penetration has a greater influence on the torque and specific energy coefficient of variations, which is increased from 2mm to 10mm, and the two indexes decrease by about 73%. It is indicated that proper increase of penetration is beneficial to reduce the vibration fluctuation degree of torque and specific energy. The proposed method of TBM cutterhead dynamic tunneling performance and the analysis results can provide theoretical basis and design reference for TBM cutterhead layout and tunneling parameters matching.

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Electromechanical coupling dynamics of TBM main drive system

Cited by 28 publications

References 17 publications

Dynamic Characteristics Analysis with Multi-Directional Coupling in a TBM Mainframe

Dynamic Characteristics Analysis with Multi-Directional Coupling in a TBM Mainframe

Multiobjective Optimization Design for Structural Parameters of TBM Disc Cutter Rings Based on FAHP and SAMPGA

A Prediction Method for TBM Cutterhead Dynamic Tunneling Performance under Typical Composite Geological Conditions

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