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工程设计学报
Chinese Journal of Engineering Design  2013, Vol. 20 Issue (6): 489-494    DOI:
    
Research on vibration response of EPB thrust system
 LIU  Jie1, QING  Qi-Xiang1, WEN  Gui-Lin2
1. College of Mechanical and Vehicle Engineering， Hunan University， Changsha 410082, China;
2. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body， Hunan University， Changsha 410082, China
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Abstract  The shield machines thrust system can be seen as a vibration system. The computational formula of the vibration response of the nondamping system to initial conditions was derived by using modal superposition method in order to study the response of the EPBs thrust system to initial conditions， and based on which the 5 degrees of freedom nondamping thrust system vibration model was built considering the foundation spring. And then vibration response to initial conditions is derived that initial angles around the X-axis and Y-axis have great influence on the attitude of the thrust system， and the deflection of the thrust system will be up to 2753°when the initial angle is 1°， that makes a great challenge to adjust the angle of the shield machine attitude， and even the shield will deviate from the planned route and be unable to complete the excavation work. The research has a theoretical guidance for the EPB shield machine attitude adjustment．

Key words： EPB shield machine      thrust system      initial displacement      vibration response      sensitivity coefficient     
Published: 28 December 2013
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LIU Jie
QING Qi-Xiang
WEN Gui-Lin
Cite this article:

LIU Jie, QING Qi-Xiang, WEN Gui-Lin. Research on vibration response of EPB thrust system. Chinese Journal of Engineering Design, 2013, 20(6): 489-494.

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https://www.zjujournals.com/gcsjxb/     OR     https://www.zjujournals.com/gcsjxb/Y2013/V20/I6/489


EPB盾构机推进系统振动响应分析

盾构机推进系统可以看作一个振动系统，为了研究土压平衡式（earth pressure balance, EPB）盾构机推进系统对初始条件的振动响应，用模态迭加法推导了无阻尼系统对初始条件的振动响应计算公式，在此基础上考虑地基弹簧的影响建立了五自由度无阻尼EPB推进系统振动模型，并推导了该振动模型对初始条件的振动响应.分析算例振动响应得出了绕X轴和Y轴的初始角度对推进系统的姿态影响很大.当初始角度为1°时，盾构机推进系统就会发生高达2753°的偏转，这样对盾构机姿态角的调整会产生很大的挑战，甚至会使盾构机偏离计划路线太多无法完成掘进工作.研究结果对工程上EPB盾构机掘进过程中姿态角调整具有一定理论指导意义.

关键词： EPB盾构机,  推进系统,  初始位移,  振动响应,  敏感系数 
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