公开(公告)号：US07104732B2

公开(公告)日：2006-09-12

申请号：US10871608

申请日：2004-06-21

申请人： Peter J. Mignacca

发明人： Peter J. Mignacca

IPC分类号： E02D7/02 ,  E02D5/34

CPC分类号： E02D5/72 ,  E02D5/385

摘要： A pile is installed in a drilled hole in the ground by inserting a tube extending to the bottom and providing on the bottom end of the tube a bottom shoe for compressing material at the bottom of the hole. A drive tool attached to the upper end of the tube applies downward compression and reciprocating rotation forces to the tube. A hammer by-passes the drive tool to apply impact forces to an upper surface of the shoe at the bottom of the tube acting to drive the shoe in downward movement so that the shoe slides downwardly relative to the tube. A radial surface of the shoe causes compressive forces on the material at the bottom of the hole and blades on the radial surface when reciprocated back and forth by the tube cause break up of the compressed material to allow repeated compression and significantly increased supported loads on a pile which is applied with the tube removed and is supported on the shoe.

摘要翻译： 通过插入延伸到底部的管并且在管的底端上提供用于压缩孔底部的材料的底部鞋，将桩安装在地面上的钻孔中。 连接到管的上端的驱动工具向管施加向下的压缩和往复旋转力。 锤子绕过驱动工具，以将冲击力施加到管底部的鞋的上表面，其作用是驱动鞋向下运动，使得鞋相对于管向下滑动。 鞋的径向表面在孔的底部的材料和径向表面上的叶片上的压缩力在管道往复运动时引起压缩材料的分解，从而允许反复压缩并显着增加支撑的负载 桩被移除并被支撑在鞋上。