CAJ | 학술논문

针对某隧道掘进工程中硬岩掘进机（TBM）的振动进行了实地测量。通过现场测试的结果可以看出，TBM推进系统在整个工作过程中振动剧烈，且主梁振动加速度响应在15Hz附近处出现明显的峰值。为降低TBM推进系统的振动水平，提出利用动力吸振器对TBM系统的振动进行抑制的方案。传统动力吸振器必须要有足够的附加质量才能达到良好的吸振效果，然而，TBM系统质量巨大且安装空间有限，吸振器的附加质量很难做到足够大。为此提出应用杠杆机构来实现放大吸振器的附加质量的方案，并设计了适用于TBM推进系统的动力吸振器。通过TBM整机—动力吸振器动力学建模分析，得到系统的频率响应函数，进而利用定点理论求得吸振器的最优同调条件与最优阻尼条件，最后对比传统动力吸振器和质量放大吸振器对主系统的抑振效果。结果表明，优化后的质量放大吸振器在吸振效果上较传统动力吸振器具有明显的优势。
침대모수도굴진공정중경암굴진궤（TBM）적진동진행료실지측량。통과현장측시적결과가이간출，TBM추진계통재정개공작과정중진동극렬，차주량진동가속도향응재15Hz부근처출현명현적봉치。위강저TBM추진계통적진동수평，제출이용동력흡진기대TBM계통적진동진행억제적방안。전통동력흡진기필수요유족구적부가질량재능체도량호적흡진효과，연이，TBM계통질량거대차안장공간유한，흡진기적부가질량흔난주도족구대。위차제출응용강간궤구래실현방대흡진기적부가질량적방안，병설계료괄용우TBM추진계통적동력흡진기。통과TBM정궤—동력흡진기동역학건모분석，득도계통적빈솔향응함수，진이이용정점이론구득흡진기적최우동조조건여최우조니조건，최후대비전통동력흡진기화질량방대흡진기대주계통적억진효과。결과표명，우화후적질량방대흡진기재흡진효과상교전통동력흡진기구유명현적우세。
Vibration response of a Tunnel Boring Machine (TBM) in a tunneling engineering was measured. The results showed that there was an intensive vibration response of the TBM during the tunnel boring process and a distinct peak value of the vibration acceleration response of the principal girder near 15 Hz frequency. In order to suppress the vibration of the TBM, a measure using dynamic vibration absorbers (DVA) was proposed. To ensure the vibration reduction effectiveness of the DVA, a sufficiently large additive mass was necessary for the traditional DVA design. Unfortunately, this was impossible due to the tremendous mass of the TBM and very limited available space for DVA installation. In this work, a new DVA design was proposed where the additive mass was amplified by a leverage mechanism. The dynamic equations for the TBM with the new DVA were developed, and the frequency response function was obtained. Furthermore, the stiffness and damping parameters of the proposed DVA were optimized using fixed-point design theory. Finally, the performances of the new DVA and the traditional DVA were compared mutually. It is shown that the new DVA performs much better than the traditional ones in vibration reduction of the TBM system.