皮尔·加劳^1，， 赵斌^1，*， 杨彪^2，， 蔡琪锐^1，

（  1、同济大学土木工程学院，上海 200092；       2、上海市机电设计研究院有限分公司，上海 200040；  ）

摘要： 大型冲压车间在其运营过程中会诱发较大的环境振动，影响周围精密仪器正常工作。本文以一大型冲压车间为例，测试了四种工况下冲压车间及周围地面的加速度反应，对比了各工况下测点加速度反应的峰值和有效值，确定了最不利工况。通过统计学的方法，在频域中过滤掉环境噪声的干扰，得到振动在频域中的衰减特性。通过对测试数据的拟合，得到该车间环境振动Z振级在土体中衰减的经验公式。文章最后讨论并评价了该车间所采取相关减振措施的有效性，结果表明采用这些减振措施可以有效地减小车间的环境振动，保证附近精密仪器设备正常工作。
关键词： 环境振动；现场测试；传播和衰减规律；减振措施

Pere Garau^1,， ZHAO Bin^2,*， YANG Biao^3,， CAI Qirui^2,

（  1、 School of civil engineering, Tongji University,Shanghai 200092；       2、School of civil engineering, Tongji University,Shanghai 200092；       3、1.Shanghai Institute of Mechanical & Electrical Engineering Co.,Ltd, Shanghai 200040；  ）

Abstract： Large scale punching machine under running will induce great environmental vibration, which may interrupt the normal usage of some precision instruments around. Based on a large scale punching workshop, the acceleration responses of test points on the workshop and surrounding ground are tested under 4 different working condition. The most unfavorable condition is determined by comparing the peak and RMS accelerations. The ambient noise is filtered out wih statistical method and vibration damping characteristics in the frequency domain are obtained. The empirical formula of the VLz attenuation in the field is acquired by fitting the test data. At last, the effectiveness of some measures which are taken to reduce the vibration is discussed and evalutated. The results show that taking these damping measures can reduce the environmental vibration effectively and make sure the instruments remaining normal work in the case the punching machine under operation.
Keywords： environmental vibration, on-site testing, transfer and attenuation laws, measure of vibration mitigation

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