Study on Dynamic Cutterhead Driving Torque of Shield Tunneling in Composite Strata

Abstract

Abstract:

By considering torque characteristics of variable-frequency motors and mesh stiffness as well as backlash nonlinearity in gear transmission,a dynamics model for the cutting system of shield tunneling machine with redundant drives was established. The fluctuation characteristics of torque loads and dynamic cutterhead driving torque in composite strata were analyzed.Results show that the output torques of driving motors fluctuate greatly in 70% soft clay stratum, which can result in stall of the machine. The

results can be used to explain the frequent stall in Shanggong mountain tunnel and provide theoretical guidance for compliance design of shield tunneling machine under complex load.

Key words:

shield tunnelling machine, composite strata, nonlinearity, cutterhead driving torque, stall

摘要：

复合地层掘进扭矩载荷突变是造成盾构机掘进过程中堵转停机的直接原因,考虑盾构机刀盘驱动变频调速电机特性、转矩传递过程中齿轮啮合刚度及齿侧间隙等非线性因素,建立冗余驱动的盾构机刀盘切削系统机电耦合动力学模型;针对典型复合地层地质条件,对盾构机在上软下硬地层掘进过程中刀盘驱动转矩动态特性进行仿真分析。结果表明,在软土体积百分比为70%复合地层中,掘进扭矩载荷显著高于50%软土百分比复合地层;盾构机在由50%软土百分比地层掘进进入70%软土百分比地层过程中,刀盘驱动电机负荷瞬间增大,甚至超出其工作极限,电机无法稳定工作,容易导致堵转发生,该结果可以部分解释我国昆明上公山隧道施工中频繁出现堵转事故的原因,为盾构机复杂地质条件下顺应性设计提供指导。

关键词:

盾构机, 复合地层, 非线性, 刀盘驱动转矩, 堵转

CLC Number:

U455.43

ZHANG Kai-Zhi, TU Hai-Dong, LAI Xin-Min.

Study on Dynamic Cutterhead Driving Torque of Shield Tunneling in Composite Strata

[J]. China Mechanical Engineering, 2010, 21(06): 643-647.

张凯之, 余海东, 来新民.

复合地层中掘进的盾构机刀盘动态驱动转矩研究

[J]. 中国机械工程, 2010, 21(06): 643-647.

[1]	XU Tingting, LUO Min, JIANG Jiajun, WANG Jing, ZHANG Jiahe. Two-layer Contact Nonlinear Mechanics Analysis of Controllable Universal Joint Flexible Structure in the Tubes [J]. China Mechanical Engineering, 2020, 31(15): 1798-1807,1814.
[2]	Chai Tian, Han Xu, Ding Fei, Lei Fei. Design and Evaluation of Non-dimensionalised Automotive Suspension Parameters [J]. China Mechanical Engineering, 2016, 27(21): 2939-2943,2981.
[3]	Ji Huawei, Liu Maona, Hu Xiaoping. Optimization of MSMA Actuator Hysteresis Model Based on Hybrid GA [J]. China Mechanical Engineering, 2015, 26(4): 508-512.
[4]	Li Zheng, Wu Weiliang, Qu Wenzhong, Xiao Li. Fatigue Crack Detection Using Nonlinear Ultrasonic Modulation Method [J]. China Mechanical Engineering, 2015, 26(17): 2384-2388.
[5]	Nie Xin;Huang Pengchong;Chen Tao;Cheng Aiguo. Topology Optimization of Automotive Key Safety Component Design Based on Crashworthiness [J]. China Mechanical Engineering, 2013, 24(23): 3260-3265.
[6]	ZHANG Chang-Ying. #br# #br# Dual-valve Control of a Work Roll Bending System [J]. China Mechanical Engineering, 2012, 23(16): 1916-1919.
[7]	LI Bei, YAN Jun, CENG Yong-Hua, GUO Gang. #br# Investigation of Nonlinear Dynamic Characteristics for Servo System of a Hydraulic Excavator Arm [J]. China Mechanical Engineering, 2012, 23(15): 1807-1810.
[8]	HEI Dai, ZHENG Mei-Ru. Dynamics Analysis of Flexible Rotor System Based on Wilson-θ Method [J]. China Mechanical Engineering, 2011, 22(24): 2918-2922,2965.
[9]	XU Gong-Wei-1, 2, XU Fang-１, ZHANG Lin-1. Analysis of Stepper Motor Velocity Saturation Nonlinearity [J]. China Mechanical Engineering, 2011, 22(24): 2958-2961.
[10]	ZHANG Lei, YANG Zi-Chun, CAO Ti-Yun-. New Low Cycle Fatigue Damage Accumulation Model and Experimental Results [J]. China Mechanical Engineering, 2011, 22(16): 1912-1915.
[11]	HAO Xiu-Gong, HU Li-Zhong, ZHENG Da-Zhou. Strongly Nonlinear Vibration Study of Electromechanical Integrating Toroidal Drive System [J]. China Mechanical Engineering, 2010, 21(19): 2278-2284.
[12]	XIAO Zheng-Meng, QIN Da-Tong, WANG Jian-Hong, WU Wen-Hui, CHEN Li-Feng. Study on Torsional Dynamics of 3-stage Planetary Gears of Main Reducer Used in Driving Cutterhead of Shield Tunnelling Machine [J]. China Mechanical Engineering, 2010, 21(18): 2176-2182.
[13]	NI Xiao-Yu, BO Chang-Wang, WANG Yun-Xia, NI Zhong-Hua. Research on Numerical Simulation and Structural Fatigue Life for Esophagus Stent [J]. J4, 2009, 20(23): 2856-2860.
[14]	Li Xiaohao;Liu Jie;Liu Jintao;Yao Zhao. Analysis of Sharp Resonance Synchronization Stability for the Dual Motor Exciting Nonlinear System [J]. J4, 2009, 20(20): 0-2519.
[15]	Du Yixian Chen Liping Luo Zhen. Topology Optimization Design of Large-displacement Compliant Mechanisms Using Meshless Methods [J]. China Mechanical Engineering, 2008, 19(2): 130-136.