吴邦达
    （中国兵器工业第五设计研究院  北京 100053）

[提要]  用低标号混凝土桩加固软弱地基，可以密实土质，提高刚度，减小变形。该法已用于高精密车床基础的防微振，并取得成功，成为不用弹簧等隔振材料防微振的新做法。
[关键词]  地面振动  软弱地基  刚度比  防微振

The soft base strengthened by low strength of concrete piles can make the soil dense, raise the stiffness and decrease the deformation. Without vibration-isolator of spring or other, this is a new and successful try for micro-vibration proof of high precise lathe foundation.
Keywords:  vibration of ground; soft base; stiffness ratio; micro-vibration proof