KR20150116738A - A assist device for refloating of concreat structure in the sea - Google Patents

A assist device for refloating of concreat structure in the sea Download PDF

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Publication number
KR20150116738A
KR20150116738A KR1020140042060A KR20140042060A KR20150116738A KR 20150116738 A KR20150116738 A KR 20150116738A KR 1020140042060 A KR1020140042060 A KR 1020140042060A KR 20140042060 A KR20140042060 A KR 20140042060A KR 20150116738 A KR20150116738 A KR 20150116738A
Authority
KR
South Korea
Prior art keywords
anchor
concrete structure
fixing groove
lifting
fastening
Prior art date
Application number
KR1020140042060A
Other languages
Korean (ko)
Inventor
박상술
김문용
Original Assignee
유한회사 박상술
김문용
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Filing date
Publication date
Application filed by 유한회사 박상술, 김문용 filed Critical 유한회사 박상술
Priority to KR1020140042060A priority Critical patent/KR20150116738A/en
Publication of KR20150116738A publication Critical patent/KR20150116738A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours

Abstract

An assisting device for refloating of a concrete structure in the sea installed under water stably refloats a concrete block constituting bases of a structure in the sea such as a wharf, a breakwater, or the like when the concrete block is discarded, and comprises an anchor rod(9) inserted into a fixing groove(8) formed in a concrete structure in the sea to quickly and stably perform a reinstallation work and a recollection work. The assisting device for refloating of a concrete structure in the sea comprises: the fixing groove(8) having a funnel shape wherein the diameter of the fixing groove gets wider from an inlet to the inside of the fixing groove; a screw coupling part(10) with which a fixing anchor(4) having a coupling hole(3) is coupled wherein a refloating wire(5) is coupled with an upper end of the coupling hole; and an expansion unit wherein the diameter of the expansion unit gets wider from an upper end to a lower end.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an auxiliary device for a marine concrete structure,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lifting assistance device in which a lifting wire of a crane is fixed when a structure such as a concrete block installed in the ocean is collected and lifted for recycling. More particularly, The present invention relates to a lifting assistance device for a marine concrete structure that can be reliably lifted when discarding a concrete block constituting the foundation of a concrete structure and can be quickly and stably performed when reinstalling and re-collecting work.

In general, when building marine facilities such as marinas, harbors, docks, etc., it is necessary to perform basic facilities, and the basic equipment is constructed of a concrete structure 2, which is usually made of a unit block of concrete material, Are vertically stacked and formed, and then the uppermost portion is finished.

In the above, the concrete structure 2 is in the form of a hexahedron, and one side of the concrete structure 2 is inclined.

That is, a unit block having a rectangular parallelepiped shape and a unit block having a sloped side are stacked in a block stacking manner.

When the marine facilities 7 are to be repaired and repaired, the concrete structures 2 are collected and disassembled to be discarded or recycled. When the marine concrete structure 2 is to be collected and dismantled, As shown in Fig. 4, this involves a lifting operation in which the lifting wire 5 is connected to the concrete structure 2 and lifted by using a crane device 6 capable of lifting a heavy object.

As described above, devices and methods which are connected to a structure installed and arranged in the ocean using lifting wires 5 of a crane device 6 are widely proposed and used. No. 10-2012-61707 (entitled "Lifting lug for heavy lifting"), which is assembled with a supporting rod to which a lug is fitted to a structure, a lug is fixed to the supporting lug, and a lifting wire is connected to the lug .

In Korean Patent Registration No. 10-1261859 (name: a breaker device and a method of lifting a ship using the same), a through hole is formed in the breaker means and a hook provided on the end of the lifting wire is connected to the through hole, Then, it is lifted up.

In addition, Korean Patent Registration No. 10-1295412 (titled asphalt mat for lifting friction using lifting coupling plates) proposed a connecting plate embedded in a structure and having a nut groove formed therein, And a lifting wire is connected to the loop so as to lift the lifting wire.

In Korean Patent Registration No. 10-1190705 (name: sinker for buoy, which is easy to install and use), a structure is provided with a latch, and a lifting wire is connected to the latch when lifting to lift the latch.

However, there is a problem in that it is not applicable to salvage of a concrete structure flooded in the sea through various lifting devices of the related art as described above.

4 and 5, when a concrete structure 2 constituting an offshore facility 7 is lifted to collect and dismantle the concrete structure 2, the concrete structure 2 is fastened to the concrete structure 2 in water, The anchor bolts 4 provided with the holes 3 are provided and the lifting wire 5 is connected to the anchor bolts 4 and then the crane device 6 is driven and lifted .

However, in the conventional method for lifting the marine concrete structure, the operation of lifting the concrete structure upward by buoyancy in the water is smoothly performed. However, after lifted to the outside of the water, the peripheral portion of the anchor bolt And the operation is not smoothly performed.

This is because, as the concrete structure is installed in the sea, the anchor bolt is corroded by seawater and its durability is remarkably deteriorated. Even when the anchor bolt is separated from the concrete structure, as shown in FIG. 6, There is a problem in that a safety accident in which a lifting line or a barge line installed with a crane device is tilted and sunk by a reaction due to a reaction occurs.

In addition, when the concrete structure is lifted and reinstalled for recycling, there is a problem that it is inconvenient to dismantle the anchor bolts protruding to the outside, which makes recycling work difficult.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a method and apparatus for recovering a concrete block which is installed in water and which constitutes a foundation of an offshore structure such as a quay, The present invention is to provide a lifting assisting device for a marine concrete structure that can be quickly and stably performed when reinstalling and re-collecting work.

In order to accomplish the above object, the present invention provides a lifting assistance device for a marine concrete structure including an anchor rod inserted into a fixing groove formed in a marine concrete structure, Wherein the fixing groove is formed in a funnel shape in which the diameter of the fixing groove gradually increases from the inlet to the inside thereof; The anchor rod is formed with a threaded portion to which a fixing anchor having a fastening hole for fastening a lifting wire is fastened at an upper end thereof and an enlarged portion extending from the upper end to the lower end of the fastening anchor is formed.

The anchor rod includes a strut, which is screwed on the upper end of the fixed anchor and vertically arranged inside the fixing hole, and a lower end portion of the anchor rod, which surrounds the outer circumferential surface of the strut and is inserted into the fixing hole, And an anchor pipe adapted to relax the shrinkage.

In the strut, at least one sloped surface between the upper end and the lower end, the diameter of which increases from the upper part to the lower part, is formed to have a larger diameter at the lower end than the upper end.

The fixing groove is coated with a chemical adhesive; The anchor rod is provided with a nut groove having a fastening hole for fastening a lifting wire to an upper end thereof and screwing the fastening anchor having a screw protrusion on an outer circumferential surface thereof and a plurality of vertical cut- And extending from the nut groove; The fixed anchor has an extension protrusion formed at a lower end of the fixed anchor so as to extend into a portion of the fixed anchor that extends into the cut-out portion, and a portion where the cut-out portion is located is extended outward.

The above-described lifting assistance device for a marine concrete structure according to the present invention is characterized in that, when lifting a block-shaped concrete structure constituting an offshore facility such as a quay, a breakwater, etc., an anchor rod to which a lifting wire is connected, The anchor rod can be permanently fixed to the concrete structure. Thus, the anchor rod can be fixed to the concrete structure, and the anchor can be fastened by lifting and re-collecting whenever necessary. And it is possible to reliably carry out re-lifting work.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic illustration showing general marine facilities; FIG.
Fig. 2 and Fig. 3 are schematic perspective views showing a concrete structure of a block type constituting general marine facilities. Fig.
Figs. 4 and 5 are schematic views showing a state in which a conventional concrete structure is lifted. Fig.
Fig. 6 is a schematic cross-sectional exemplary view showing a problem in a state where a conventional concrete structure is lifted. Fig.
FIG. 7 is a schematic view showing a process of forming a tapered groove in a marine concrete structure to be applied to a lifting assistance device of a marine concrete structure according to an embodiment of the present invention; FIG.
FIG. 8 is a schematic cross-sectional view showing a process of embedding a lifting assistance device of a marine concrete structure in a concrete structure according to an embodiment of the present invention; FIG.
Fig. 9 is a partially cutaway schematic cross-sectional exemplary view showing the use state of a lifting auxiliary device of a marine concrete structure according to the present embodiment. Fig.
10 is a schematic cross-sectional exemplary view showing a lifting assistance device for a marine concrete structure according to another embodiment of the present invention.
11 is a schematic view showing an operation state of an anchor rod and an anchor bolt applied to a lifting auxiliary device of a marine concrete structure according to the present embodiment.
FIG. 12 is a partially cutaway schematic cross-sectional exemplary view showing the state of anchor rods applied to a lifting assistance device of a marine concrete structure according to the present embodiment. FIG.

Hereinafter, a lifting assistance device for a marine concrete structure according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more fully describe the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

FIGS. 7 to 9 are views showing a lifting assistance device for a marine concrete structure according to an embodiment of the present invention. The lifting assistance device 1 for a marine concrete structure according to the present embodiment includes a marine facility 7 And an anchor rod 9 inserted and fixed in the fixing groove 8 formed in the concrete structure 2 constituting the concrete structure 2.

That is, after the lifting wire 5 of the crane device 6 is connected to the anchor rod 9, the crane device 6 is driven to lift the concrete structure 2.

In the lifting assistance device 1 according to the present embodiment as described above, it is preferable that the fixing groove 8 has a funnel shape gradually increasing in diameter from the inlet to the inside thereof.

That is, as the depth of the fixing groove 8 is increased, the inner diameter of the fixing groove 8 gradually increases and the inclined surface of the lower enlarged shape. When the anchor rod 9 receives a load in the vertical direction by the lifting wire 5, The applied load is evenly dispersed and supported on the slanted surface of the fixing groove 8, so that a more stable lifting operation can be performed.

In the above-described lifting assistance device 1 according to the present embodiment, the anchor rod 9 is provided with a fixed anchor 4 having a fastening hole 3 for fastening the lifting wire 5 to the upper end thereof, A screw connection portion 10 to be coupled is formed, and an extension portion having a larger diameter from the upper end to the lower end is formed.

That is, normally, while the fixed anchor 4 is maintained in the separated state, the fixed anchor 4 is fastened, if necessary, and the lifting wire 5 is connected to the fastening hole 3 formed in the fixed anchor To perform lifting work.

In the lifting assistance device 1 according to the present embodiment as described above, the anchor rod 9 is screwed into the fixing anchor 6 at the upper end thereof, And an anchor pipe (13) which is inserted into the fixing groove (8) and surrounds the outer circumferential surface of the strut (11) and is formed with a cutout groove (12) ).

That is, the anchor pipe 13 is shrunk and relaxed between the strut 11 and the fixing groove 8 to be supported in close contact with the strut 11 housed in the fixing groove 8, The pillars 11 are not separated to the outside.

Therefore, when the fixed anchor 4 is lifted while the fixed anchor 4 is lifted up to the upper end of the strut 11, it is possible to carry out the lifting operation adduckily by supporting the generated load sufficiently.

Further, in the support 11 of the present embodiment, the support 11 has at least one inclined surface whose diameter increases from the upper portion to the lower portion between the upper end and the lower end, It is preferable that the diameter is formed largely.

The anchor pipe 13 is pushed outward by the inclined surface so that the anchor pipe 13 is inserted into the fixing groove 8 So as to further increase the fixing pressure, thereby further preventing the support post 11 and the anchor pipe 13 from being detached from the fixing groove 8, so that a more stable lifting operation can be performed have.

The operation and effect of the lifting assistance device 1 according to the present embodiment as described above will be described in detail as follows.

First, when a concrete structure 1 constituting an offshore facility 7 is lifted in water through a crane device 6 provided with a lifting wire 5, as shown in FIG. 7, A fixing groove 8 is formed in the concrete structure 2 with a separate drilling apparatus.

In order to form the fixing groove 8 in the concrete structure 2, first, a straight grooved groove is formed in a vertical direction by using a general drilling bit, The guide rods 14 whose outer circumferential surfaces are inclined surfaces are arranged in the grooves.

When the guide rod 14 is disposed as described above, a plurality of cutter blades 15 having a receiving portion to be inserted while enclosing the outer circumferential surface of the guide rod 14 and extending and contracting outwardly are formed in the receiving portion. Shaped drill bit 16 is inserted and rotated so that the inner diameter of the groove gradually increases as the depth of the groove increases and the diameter of the drill bit increases gradually The fixing groove 8 is formed.

At this time, the cutter blade 15 is in contact with the outer circumferential surface of the guide rod 14 and is guided downward while being extended in the outward direction, and is rotated so that the inner surface of the wedge-shaped groove is sloped to form a funnel- So that the fixing groove 8 is formed.

The fixing grooves 8 are preferably formed to have a depth of at least 50% with respect to the total depth of the concrete structure 2, but are not limited thereto.

8, the struts 11 constituting the anchor rod 9 are vertically arranged, and the anchor pipe 13 (see Fig. 8) Is inserted into the fixing groove (8).

At this time. The anchor pipe 13 surrounds the outer circumferential surface of the strut 11 so as to be fitted between the inner circumferential surface of the fixing groove 8 and the strut 11 and is supported by an inclined surface And the lower portion is accommodated while expanding outward relative to the upper portion.

Accordingly, the lower portion of the fixing groove 8 is fitted to fit the extended groove 8, and the supporting post 11 is firmly supported and fixed on the fixing groove 8.

As described above, when the anchors 9 are installed in the fixing grooves 8, the fixing anchors are screwed to the threaded portions of the anchor rods 9, The hoisting wire 5 is connected to the fastening hole 3 of the crane unit 3 and then the crane unit 6 is driven to lift the concrete structure 2.

When the concrete structure 2 lifted from the water is installed in the water for recycling, the fixed anchor 4 is detached from the anchor rod 9 and then discharged to the sea, .

10 to 12 are views showing a lifting assistance device for a marine concrete structure according to another embodiment of the present invention. In the lifting assistance device 1 according to the present embodiment, And an anchor rod 9 is received in the fixing groove 8. The anchor rod 9 is fixed to the fixing groove 8 through the adhesive force of the chemical adhesive, As shown in Fig.

The anchor rod 9 is provided with a threaded engagement portion 3 having a fastening hole 3 for fastening a lifting wire 5 at an upper end thereof, (10) is formed as a nut groove (17), and the lower portion has a plurality of vertically cut portions around the center, and is formed to extend from the nut groove (17).

The lower end of the fixed anchor 4 is provided with an extending projection 18 which extends in the outward direction of the cutout portion and into which the cutout portion is located to expand the lower portion of the fixed anchor 4.

11, the enlarged projection 18 of the fixed anchor 4 is moved in the outward direction as the enlarged projection 18 enters the lower portion of the anchor rod 9. As a result, So as to be firmly fixed to the fixing groove 8 in such a manner as to be closely fitted thereto.

12, the opening and closing bolts 19 are fastened to the nut grooves constituting the threaded portion 10 to seal the outside of the anchor rod 9 from the outside, It is desirable to prevent the nut groove from being damaged by corrosion.

When it is desired to connect the lifting wire 5, the opening and closing bolts 19 are detached from the nut groove, and the fixing anchor is screwed, and then the fixing anchor 4 is fastened And the lifting wire 5 is connected to the hole 3 to perform a lifting operation.

As described above, in the lifting assistance device 1 according to the present embodiment, the anchor rod 9 is fixedly inserted into the fixing groove 8, and the lower portion thereof is unfolded outward, Since the lower portion of the anchor rod 9 has a larger diameter than the diameter of the inlet of the fixing groove 8 as it goes into the inner depth of the fixing groove 8, Is fixed through the chemical adhesive (9).

Therefore, when the concrete structure 2 made of heavy material is lifted, the anchor rod 9 is prevented from being separated by an applied load.

Thus, the lifting work of the concrete structure 2 can be performed more safely.

As described above, the lifting assistance device of the marine concrete structure according to the present embodiment can easily and reliably perform the lifting operation because the anchor rod to which the lifting wire is connected is not easily separated from the concrete structure.

It will be apparent to those skilled in the art that various modifications and equivalent arrangements may be made therein without departing from the scope of the present invention as defined by the appended claims and their equivalents. . Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: Lifting assistance device 2: Concrete structure
3: fastening hole 4: fixed anchor
5: lifting wire 6: crane device
7: Marine Facilities 8: Fixing Holes
9: anchor rod 10: threaded portion
11: Support 12: Cutting groove
13: anchor pipe 14: guide rod
15: Cutter blade 16: Chemical adhesive
17: nut groove 18: extension projection
19: Opening and closing bolts

Claims (4)

Claims 1. A lifting assistance device for a marine concrete structure comprising an anchor rod inserted into a fixing groove formed in a marine concrete structure, comprising:
The above-
A funnel shape whose diameter gradually increases as it enters the interior from the inlet;
In the above-described anchor rod,
Wherein an extension part having a threaded part for threading a fixed anchor having a fastening hole for fastening the lifting wire to the upper end thereof and an enlarged diameter extending from the upper end to the lower end is formed.
The method of claim 1, further comprising:
The above-
A support having a fixed anchor screwed on a top thereof and vertically arranged inside the fixing groove; And an anchor pipe enclosing the outer circumferential surface of the strut, inserted into the fixing groove, and formed with a cut-out groove in the lower portion to relax the shrinkage.
3. The method of claim 2,
In the above-mentioned support,
And at least one inclined surface whose diameter increases from the upper part to the lower part between the upper part and the lower part so that the diameter of the lower part of the lower part is larger than that of the upper part.
The method of claim 1, further comprising:
In the fixing groove,
A CHEMICAL adhesive is applied;
In the above-described anchor rod,
A nut groove having a fastening hole for fastening a lifting wire on an upper end thereof and threadedly fastening the fastening anchor provided with a screw protrusion on an outer circumferential surface thereof and having a plurality of vertical cut- ;
At the lower end of the fixed anchor,
And an extension protrusion that extends toward the cut-out portion and expands a portion in which the cut-out portion is positioned to extend outward so that the lower portion of the fixation groove is expanded.
KR1020140042060A 2014-04-08 2014-04-08 A assist device for refloating of concreat structure in the sea KR20150116738A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017131257A1 (en) * 2016-01-27 2017-08-03 김중호 Lifting fastener
CN110359937A (en) * 2019-06-27 2019-10-22 湖南科技大学 A kind of roofbolt recovering device and recovery method of sound combination driving
KR102424505B1 (en) * 2022-04-19 2022-07-25 유한회사 신아개발 A Lifting auxiliary device for offshore concrete structure
KR102604243B1 (en) * 2022-10-25 2023-11-21 주식회사 항도엔지니어링 Anchor type lifting unit and concrete block lifting method using the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017131257A1 (en) * 2016-01-27 2017-08-03 김중호 Lifting fastener
CN108698803A (en) * 2016-01-27 2018-10-23 金仲镐 Promotion fastener
US20190031473A1 (en) * 2016-01-27 2019-01-31 Choong Ho Kim Lifting fastener
CN110359937A (en) * 2019-06-27 2019-10-22 湖南科技大学 A kind of roofbolt recovering device and recovery method of sound combination driving
CN110359937B (en) * 2019-06-27 2024-01-23 湖南科技大学 Anchor rod recovery device driven by dynamic and static combination and recovery method
KR102424505B1 (en) * 2022-04-19 2022-07-25 유한회사 신아개발 A Lifting auxiliary device for offshore concrete structure
KR102604243B1 (en) * 2022-10-25 2023-11-21 주식회사 항도엔지니어링 Anchor type lifting unit and concrete block lifting method using the same

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