KR20050006457A - Installation Method of Pile Anchor by using of Buoyancy controller and Weight and Concrete Pile Anchor - Google Patents

Abstract

PURPOSE: A drilling method of a pile anchor and a concrete pile anchor are provided to install a floating structure easily, to have the large vertical resistance and to install in the deep depth of water by simply drilling the pile in the sea-bottom with an additional weight and a buoyancy adjustor. CONSTITUTION: A concrete anchor(1-6) containing a pile anchor(1-7) is fallen by using a rope(1-9). A pipe is connected with the rope to be connected with the pile anchor and fallen. The falling and the lifting are performed by separating and combining a weight and a buoyancy adjustor. The weight has a ball bearing for freely moving the pipe. Thereby, the pile anchor of a large depth is drilled with a minimum equipment.

Description

Installation method of Pile Anchor by using of Buoyancy controller and Weight and Concrete Pile Anchor}

Conventional floating offshore structures are often installed in deep water and need to be kept in position. Marine structures, including aquaculture, are maintained in the desired position by anchor systems consisting of mooring lines and anchors. Conventional anchors are heavy or ship anchors are often used. However, in the case of a typhoon, such as typhoon, the wave power is increased, so the weight of the anchor anchored by the weight of the anchor is very large. Therefore, small pile anchors are often used for permanent anchors, which are difficult to bury, and especially in the depths of 30-40m or more, which require saturation diving when divers work, installation is very difficult and expensive equipment such as ROV was needed. As a prior art of the present invention, there have been various researches and publications about pile anchors, but suction pile anchors using ROV and the like are the only ones. Self-development anchors with improved crane barge and pile anchor having submerged compartments necessary as prerequisites for the present invention are patents of one of the applicants of the present invention, patents 157675 and 0387375.

The present invention provides a pile anchor method and a concrete pile that can be used by a worker on the surface to place a pile of pile anchors without the help of divers or ROVs, even when it is difficult to saturate a diver beyond 40m. It is about the development of anchors. The present invention has the advantage that it can be easily installed in the seabed of the sand by using a separate weight and buoyancy regulator is easy to install compared to the conventional anchor, the vertical resistance is large, and can be installed even in deep water.

1 is a schematic diagram of the method of placing pile anchors using buoyancy controller and weight

2 is a schematic diagram of concrete anchors with templates for pile anchor storage.

3 is a schematic diagram of the pipe down with a pile anchor rope

4 is a schematic diagram of placing the pile anchor by additional free fall

Figure 5 is an additional side view

6 is a side view and a bottom view of the buoyancy regulator

7 is

1-1 ... Work pants with immersion compartment 1-2 ... Tower 1-3 ...

1-4 ... Inundation Section 1-5 ... Worker

1-6 Concrete Anchors 1-7 Pile Anchors

1-8 ... concrete anchor connection rope 1-9 ... pile anchor connection rope

1-10 ... Chains connected to floating structures

1 ... concrete anchor 2 ... template for pile anchor

3 ... rope hanger for lowering concrete anchors 4 ... pile anchor

5.Inner support of pile anchor for connecting rope for pipe connection

6 ... pile anchor flange 7 ... fluke

3-1 ... Pipe down the rope of the pile anchor

10 ... weight 11 ... ball bearings to move additional pipes freely

12.Top concave and convex with grooves for easy connection with buoyancy regulators

20 ... Buoyancy regulators 21 ... Buoyancy regulators Internal pipe penetrations 22 ... Ball bearings

23 Buoyancy regulator lower connection 24 Air cylinder 25 Regulator 26 Hose

27.Air outlet 28 ... Air outlet valve

29 ... membrane bond with top of weight

30.Air tube

The present invention relates to a method for placing pile anchors using buoyancy regulators and weights and to concrete pile anchors. In the pile anchoring method, the concrete pile anchor (1-8) is lowered to the bottom of the seabed with the rope (1-8) in the pants (1-1) having the submerged compartment (Fig. 1). After connecting the pipe (3-1) to the rope (1-9) connected to the pile anchor (1-7) and lowered (Fig. 3),

The pipe 10 free-falls the pipe 10 and the buoyancy regulator 20 free-falls (FIG. 4). Then, the pile anchor 4 is typed on the bottom of the sandy sea floor by hitting the weight.

The weight has a ball bearing 11 in the upper and lower portions of the weight so as to move the pipe freely as shown in Figure 5 and has an uneven portion 12 for coupling with the buoyancy regulator. 6 is a view of the side and the lower connection of the buoyancy regulator, the buoyancy regulator 20 is composed of a reservoir 24, a hose 26, a regulator 25, when connected to the connection portion 12 of the upper portion of the regulator After the air is supplied from the air cylinder 24 by pressing the radar 25, the air tube 30 is first filled, so that the buoyancy regulator and the weight are firmly coupled (FIG. 7), and the air of the regulator is filled with the buoyancy regulator. Buoyancy is gained with the weight rises to work pants. The buoyancy regulator 20 coupled with the weight 10 lifts the pipe with little resistance by the ball bearing 22 (FIG. 8). The air of the buoyancy regulator is discharged or maintained by the air outlet 27 by the operation of the air discharge valve 28 by the operator of the work pants. When the buoyancy regulator is lowered, the air is discharged and the air discharge valve 28 remains locked. Reference numeral 29 denotes a support membrane inside the buoyancy regulator for maintaining the engagement with the upper portion of the weight.

When the pile anchor is sufficiently poured while repeating the process from FIG. 3 to FIG. 8, when the buoyancy regulator and the weight are recovered as shown in FIG. 9, and the pipe and the rope are recovered in order, the concrete pile anchor remains in the seabed. It acts as a pile anchor to maintain the position of the floating structure.

In order to withstand wave forces on floating offshore structures in stormy weather conditions such as typhoons, the vertical forces of anchors should be reinforced. By increasing the fluke permissible angle of anchors compared to conventional anchors, the minimum angle is maintained at the time of embedding to minimize the resistance, and the angle of the wings is widened during drawing to greatly improve the resistance to vertical drawing.

By additionally operating the buoyancy regulator, the pile anchor can be typed on the sand of the sand, and the weight and buoyancy regulator can be combined together to raise the pile anchor of the deep water as the minimum necessary equipment.

Claims (3)

File Anchor Type Method (A) The process of descending concrete anchors including pile anchors using ropes (B) The process of connecting and descending pipes to the ropes connected to the pile anchors. (C) Weights and buoyancy regulators with ball bearings for free movement of pipes. Fall and Ascent Process by Separation and Coupling The method according to claim 1, the pile anchor type method having a connection portion capable of separating and engaging a weight and a buoyancy regulator having a ball bearing for freely moving the pipe. Concrete anchor with template to contain pile anchor