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    Apparatus for forming in-ground concrete pilings
    4.
    发明授权
    Apparatus for forming in-ground concrete pilings 失效
    用于形成地面混凝土桩的设备

    公开(公告)号：US4992002A

    公开(公告)日：1991-02-12

    申请号：US529486

    申请日：1990-05-29

    申请人： Wayne DeWitt

    发明人： Wayne DeWitt

    IPC分类号： E02D5/38 ,  E02D5/42 ,  E02D7/20 ,  E02D15/04

    CPC分类号： E02D5/42 ,  E02D15/04 ,  E02D5/385 ,  E02D7/20

    摘要： An apparatus for forming an in-ground concrete piling includes an elongate hollow mandrel which can be driven into the ground with a pile driver. A cupped foot, having a larger cross-sectional area than the mandrel, is placed beneath the mandrel before it is driven into the ground, and openings located near the bottom of the mandrel permit grout placed in the mandrel to flow into the space between the mandrel and the foot. A hollow sheath which slidably fits over the foot is attached to the bottom of an annular collar which slidably fits over the mandrel, forming a seal to prevent escape of grout from the openings while the mandrel is being filled. In use the mandrel is filled with grout before it is driven into the ground. Thereafter, during driving, the grout flows out of the openings in the bottom of the mandrel into the space around the mandrel, which is created by the foot. The column of grout in the mandrel acts as a static pressure head which forces the grout out of the mandrel into the surrounding space with a high volumetric flow rate as fast as the space is created.

    摘要翻译： 用于形成地面混凝土桩的装置包括细长的中空心轴，其可以用打桩机驱动到地面中。 具有比心轴更大的横截面面积的杯形脚在其被驱动进入地面之前被放置在心轴下方，并且位于心轴底部附近的开口允许放置在心轴中的灌浆流入到心轴之间的空间中 心轴和脚。 可滑动地装配在脚上的空心护套连接到可滑动地装配在心轴上的环形套环的底部，形成密封件以防止在心轴被填充时水泥浆从开口脱出。 在使用中，心轴在被驱动到地面之前被灌浆。 此后，在驱动期间，浆料从心轴的底部的开口流出到由心轴产生的心轴周围的空间中。 心轴中的灌浆柱用作静压头，其将浆料从心轴挤出到周围空间中，其具有与产生空间一样快的高体积流量。

    Device and process for making unclad concrete piles
    5.
    发明授权
    Device and process for making unclad concrete piles 失效
    不包括混凝土桩的装置和工艺

    公开(公告)号：US4575283A

    公开(公告)日：1986-03-11

    申请号：US558555

    申请日：1983-12-05

    申请人： Claudio Guandalini ,  Fausto Massari

    发明人： Claudio Guandalini ,  Fausto Massari

    IPC分类号： E02D5/38 ,  E02D5/42 ,  E02D5/34

    CPC分类号： E02D5/42 ,  E02D5/385

    摘要： The device comprises:a beating cap (1) provided with a conduit (2) for introduction of the concrete under pressure;a pipe form (3) to be sunk and pulled out gradually as the concrete is introduced, the pipe form having a fastening (4) connected to a pressure gauge (4') for reading of the pressures acting on the concrete;a chuck (5) located between the pipe form (3) and having a conduit for passage of the concrete (2) under pressure and a cylindrical sheath (6) for reducing volume;two expandable tubular rings (7,7') to make a seal for the air under pressure in the air chamber (8) between the pipe form (3) and the chuck (5) to achieve locking between the chuck (5), the pipe form (3) and the beating cap (1);a one-time bottom (9) to prevent penetration of dirt in the pipe form during sinking;The raising of the pipe form (3) gradually as the concrete is introduced being facilitated by the pressure that is exerted in air chamber (8) by the effect of the introduction of the concrete.

    摘要翻译： 该装置包括：打浆盖（1），设有用于在压力下引入混凝土的导管（2）; 管道形式（3）随着混凝土被引入而逐渐沉没并拉出，管形式具有连接到压力表（4'）的紧固件（4），用于读取作用在混凝土上的压力; 位于管形式（3）之间并且具有用于在压力下通过混凝土（2）的导管和用于减小体积的圆柱形护套（6）的卡盘（5） 两个可膨胀的管状环（7,7'），以在管形式（3）和卡盘（5）之间的空气室（8）内为压缩空气进行密封，以实现卡盘（5）之间的锁定 管形式（3）和打浆帽（1）; 一次性底部（9），用于防止下沉期间管道中的污物渗透; 通过引入混凝土的作用，在空气室（8）中施加的压力促进了引入混凝土的管形式（3）逐渐升高。

    In situ pile forming method
    6.
    发明授权
    In situ pile forming method 失效
    原位成桩法

    公开(公告)号：US4158518A

    公开(公告)日：1979-06-19

    申请号：US832947

    申请日：1977-09-13

    申请人： Fredric Rusche

    发明人： Fredric Rusche

    IPC分类号： E02D5/36 ,  E02D5/42 ,  E02D15/04

    CPC分类号： E02D5/36 ,  E02D15/04 ,  E02D5/42

    摘要： After wet-drilling a hole until a bearing strata is reached, a mandrel with a removable overboot is lowered into the hole and the overboot is seated by a few hammer blows. The mandrel is than partly filled with thick concrete from its top, the top of the mandrel sealed, air-pressurized and a mechanical lifting force is applied. The pressure of the air within the mandrel plus the weight of the concrete forces off the overboot, and also forces the thick concrete against the sides of the hole, and the concrete forms a seal between the sides of the hole and the mandrel. The air pressure also helps lift the mandrel out of the hole.

    摘要翻译： 在钻一个孔直到达到轴承层之后，具有可移除的超启动的心轴下降到孔中，并且通过几次锤击来使超启动位置。 心轴部分地从顶部填充厚混凝土，心轴的顶部被密封，空气加压并施加机械提升力。 心轴内的空气压力加上混凝土的重量不得超过启动力，并且还会使厚混凝土抵靠孔的侧面，并且混凝土在孔的侧面和心轴之间形成密封。 空气压力也有助于将心轴从孔中提出。