我厂在准备安装一台250吨冲床时,发现设备基础的壁柱偏小,而且预留的地脚螺栓孔内落入石子泥砂。安装人员在清除孔内杂物时,不慎将壁柱打掉了500～600毫米,给设备安装带来了困难。为解决壁柱偏小和地脚螺栓锚固问题,采用了下面的加固方法。图1为冲床设备基础的平面图。先凿去原壁柱上水泥砂浆抹灰层,用水 When preparing to install a 250-ton punch press, the plant found that the pilasters on the foundation of the equipment were too small, and the reserved anchor bolt holes fell into the silt sand. The installer inadvertently knocked the pilaster 500-600 millimeters when clearing the debris in the hole, which caused difficulty in equipment installation. In order to solve the problem of small pilasters and anchor bolts, the following reinforcement methods are used. Figure 1 is a plan view of the foundation of a punch press. First chisel away the original screed on the cement mortar plaster layer, with water