CS225712B1 - Steel bored pile - Google Patents

Description

The invention relates to a steel pile in which the extension of the underground and aboveground parts and the increase of the load-bearing capacity under transverse forces are solved.

Previously known steel drilled piles are designed as one-piece with anchoring for ropes.

With such piles, only a small amount of use can be achieved when installing temporary objects. Temporary objects derive higher compressive and transverse forces, require greater terrain unevenness and, in the case of the steel structure of the object, require greater fitting accuracy, allowing pile maneuverability. Therefore the use of existing steel drilled piles is not suitable for their narrow delimitation (anchoring ropes).

The above drawbacks are overcome by the steel modular drilled pilot according to the invention, which is based on the division of the pile into several functional parts with defined areas of action. The center is attached to the lower threaded extension. an anchoring ring with an anchoring ring in which the upper part with the adjustable head is inserted. The head has a hinged extension for connection to the building, respecting the construction tolerances.

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By using the bottom threaded part terminated by the blade, an effective distribution of the axial load into the soil is achieved and the drilling resistance is reduced. Removable joint of the lower and middle part allows to adjust the lower part in order to achieve the necessary bearing capacity of the lower part and at the same time the possibility of changing the anchor ring.

An anchor ring in the central part, which is retracted during installation and is below ground level after installation, achieves an efficient transfer of shear forces to the soil.

By using a thickened central portion with stabilizing lugs and locking screws, the pusher and pulling effect on the anchor ring is achieved when installing and withdrawing the pile. At the same time, the locking screws secure the parts to be joined against unwanted separation while protruding the outer shell of the pile. The clamping elements are threaded in a reinforced sheath, which is also used in mounting and pulling to transmit the necessary torque and initial compressive force, as well as tensile forces when handling the pile.

The clamping screws guided in the reinforced sheath are partially articulated with pressure plates, ensuring the transfer of forces from the corner to the middle. The central part has a treatment for attaching the rubber sealing ring against the ingress of gum water. The joint between the central and upper portions is a spread between the stiffening ring that forms the central portion and the upper portion by means of thrust plate screws utilizing both elastic and inflexible deformation of the annular and upper portion and the relative friction between the thrust plate clamping screws and the upper portion. The upper part is tubular at the lower and upper end closed with a thread and threaded head and joint system.

The head fine-tunes the necessary height and at the same time in the center hole is possible to compensate for inaccuracies in both directions, resulting from the installation of the pile and assembly of the object system of two pressure and one anchor bolts and anchor bolts with joint head, fixed and movable nut warhead secures. The displacement of the movable nut is slight and has mainly a switching effect between the articulated superstructure and the head.

In the accompanying drawings, FIG. 1 shows the overall configuration of the proposed pile in front view. In FIG. 2 is a front view of a reinforced lip, and FIG. 3 is a bottom portion of the lip shown in a top view. In FIG. 4 shows the central part with reinforced! in the front view, and in FIG. 5, this portion of the pile is shown in a top view. Fig. 6 is a front view of the top and FIG. 7 shows a top view from above.

In FIG. 8 is a front view of the anchor ring, and FIG. 9 is a top view of the anchor ring. In FIG. 10 is a front view of the extension portion. Fig. 11 shows a protective jacket in front view. Further, FIG. 12 is a top view of the clamping screws with thrust pads; and FIG. 13, these clamping screws with thrust pads are shown in front view. Fig. 14 shows a sealing ring from above, and FIG. 15 shows a sealing ring in a front view. In FIG. 16 is a front view of a knuckle screw. In FIG. 17 is a top view of a fixed and movable nut. Fig. 18 is a top view of an anchor cloth with a kib head arrangement, and FIG. 19 illustrates an anchor plate with a hinge head modification in front view. Fig. 20 shows a top view of the pressure plate, and FIG. 21 shows a pressure plate in front view. In FIG. 22 is a top view and FIG. 23 is a head in a front view. Fig. 24 is a front view of the locking screws; and FIG. 25 shows the locking screws in a top view.

In the lower threaded part X in the shape of the pipe with the outside! threaded and internally reinforced upper end, terminated at the lower end by reinforced lip 21, is connected to the middle portion 2 in the form of a pipe with a larger upper and smaller bottom diameter and an internal thread at the lower end secured by locking screws X. anchor ring X in the shape of an oven with an outside! the central part 2 comprises at the upper end two rows of normally oriented clamping screws 6 guided in the reinforced housing 2 ^{with the} thrust pads 8 in the form of segments that fit inside the middle part 2. In the middle part 2

2257.2 the upper part i, which is in the shape of a pipe with closed, is inserted! and with an external thread at the upper end onto which the tube head J is screwed in with a closed upper end, an internal thread and a central bore.

The head 6 is connected through a central opening to a kib superstructure made up of two press plates 11. ring-shaped with central hole, anchoring plate 14 on the lower flat with an adjustment for attaching the articulated head 16 of the bolt 12 with the movable nut 15 and the fixed nut 13. The connection of the head 4 and the top 23 is secured against undesirable separation by locking screws 12. The pilot is complemented by a sealing ring 17. the accessory comprises a pipe-shaped extension portion 18 with external threads, an internal thread at the lower end and an internal reinforcement at the upper end, and a protective sheath 20 of the central portion 2.

Claims (1)

A steel drilled pilot, characterized in that it is assembled from an outer threaded threaded portion (1) with external threads and a reinforced lip (21), an adjustable threaded portion (18) with external threads and an internal thread on the a lower end to which a central pipe-shaped portion (2) with a larger upper and smaller lower diameter as well as an internal thread at the lower end is attached, secured by locking screws (9) defining together with the stabilizing projections (10) which end the lower end of the larger diameter of the central part (2) the position of the anchor ring (5) which is in the form of a pipe with the outer radial vertical surfaces tucked on the middle part (2) below the level of two rows of clamping screws (6) guided in the reinforced shells (7) radially in the upper end of the central part (2), provided with pressure plates (8) positioned inside the pile, the upper part (3), which is in the shape of a tube with closed tube, is inserted into the central part (2) sealed by the sealing ring (17)! and an external thread at the upper end, up to the threaded head (4), secured by the locking screws (19) and provided with an internal thread and a central borehole which is connected with a joint body, composed of thrust plates (11) anchoring plate (14) on the lower flat with an adjustment for attaching the joint head (16), which is complemented by a bolt (12) with a movable nut (15) and a fixed nut (13), which is inserted into the middle (2) a pipe-shaped protective sheath (20).