KR20170099273A - Joints Appartus of The Concrete Piles and Steel Pipe - Google Patents

Abstract

The present invention discloses a concrete pile and pipe joint.
A plurality of ring-shaped joint blocks fastened to the opposite ends of the files used for strengthening the ground by bolts and provided for coupling the files in an upright state; And a forcible fitting unit that allows the coupling blocks to be tightly and integrally joined together by forcibly engaging the fitting projections and the fitting holes provided in the opposed relation, Without sacrificing work time and effort, which allows workers to easily combine file associations.

Description

Technical Field [0001] The present invention relates to a concrete pile and a pipe joint,

The present invention relates to a method of connecting at least two concrete file and steel pipe file (hereinafter referred to as "file") to be deeply built into soft ground for soft ground reinforcement in foundation work of civil engineering or building construction To a concrete pile and a steel pipe jointing apparatus to be used. In particular, the present invention relates to a concrete pile and steel pipe jointing device having a joint structure improved in workability so that at least two files deeply embedded in a soft ground can be easily connected without consuming a large amount of time and time.

In general, it is well known that pile works, that is, pile works and foundation work are carried out for reinforcing the ground when civil works or building works are done in the ground. In the case of concrete files, steel pipes ) File, it is widely used for foundation construction to build a building mainly because it has a low resistance to a vertical load and a low manufacturing cost.

And concrete piles have different depth of penetration according to the ground conditions. In case of soft ground, more than two files are connected to each other to have a greater compressive strength on the soft ground. Examples of jointing devices for connecting these concrete files are disclosed in the following patent documents.

Patent Document 1 refers to a joint apparatus for a concrete pile which is connected to two or more soft grounds deeply at the time of foundation work of a civil engineer or a construction work, and a joint portion of the concrete pile is formed at the center of the pile, And the outer diameter is the same as the outer diameter of the upper concrete pile and the through hole is drilled at a position corresponding to the PC nut of the upper concrete pile and a hollow portion having the same inner diameter as the hollow inner diameter of the lower concrete pile is formed at the center portion, A joint device comprising a lower circular plate which is the same as the outer diameter of a concrete pile and in which a through hole is drilled at a position corresponding to a PC nut of a lower concrete pile and a connecting vertical member integrally connected between the upper circular plate and the lower circular plate , And connects between the edge of the upper original plate and the edge of the lower original plate, An annular ring formed with a through hole at intervals in the circumferential direction, at least one portion of which is cut in the vertical direction, and a connecting vertical member having a bolt hole formed in the connecting vertical member at a portion corresponding to the through hole of the annular ring, It is confirmed that the bolt is made of a bolt which penetrates the through hole of the annular ring and is fastened to the bolt hole of the center pipe,

Patent Document 2 proposes to strengthen the strength of the joint portion connecting the lower file and the upper file deeply buried in the ground at the time of foundation work of the ground so as not to cause breakage or deformation in a concrete pile or a jointing apparatus, The present invention relates to a detachment / attaching device for a concrete pile which can be conveniently used at a construction site by improving the structure of a concrete pile. The apparatus for detachment and attachment of a concrete pile includes an upper plate having a plurality of peanut holes, a cap formed at a lower portion thereof, And a plurality of reinforcement plates formed between the upper and lower discs to constitute an upper file which is connected to the upper and lower discs, And the upper and lower files are coupled to each other. It can be seen that it is disclosed that the wool (PC steel bar) of the upper file is fixedly coupled to the peanut hole of the original plate,

Patent Document 3 discloses a structure in which an upper plate having a fastening hole to be fastened with a fastening bolt and a tip end of an upper concrete pile, a lower plate having fastening holes to be fastened with upper ends of the lower concrete pile and fastening bolts, By providing a jointing device for a concrete pile made up of two or more connecting blocks including a vertical plate for connecting, it is possible to secure not only the working time but also the hermeticity by improving the structure of the outer ring which is fixed around the outer peripheral surface of the coupling device, It is possible to confirm that the impact generated at the time of impact is dispersed efficiently, and the impact resistance is high, and at the same time, the production is easy and the productivity is increased.

However, in the concrete file joining apparatus described in the above-mentioned patent documents, when two files, which are divided into an upper part and a lower part, are integrally connected, an upper concrete file, which is a heavy object, is supported by using a heavy equipment such as a crane over a lower- , The bolts of the joint block connected to the upper concrete file are aligned with the PC nuts installed in the lower concrete file and the bolts are fastened one by one to the bolts through the matching bolts. .

This leads to deterioration of workability, which consumes a large amount of manpower and time for linking of files. In addition, there is also a problem of raising civil works and building costs due to an increase in work cost when an expert is input to improve the work.

In addition, the connection block provided in the file connection of the prior art is structurally divided into upper and lower spaces (a space that can be fastened with bolts) in order to secure a work space for minimum bolt fastening in connecting the connection block and files It is necessary to form the upper and lower frames.

Because of this structure, after the connecting block is integrally connected to the upper and lower files, it is necessary to bind and fix the periphery of the connecting block as a separate outer ring (belt) in consideration of the strength of the empty space formed in the upper and lower plates It is also complicated to work.

In the case of manufacturing a plurality of divided bodies in order to improve the transportation, storage and assembling of the connecting blocks as in the case of Patent Document 3, the prior art must be connected to each other with bolts There is a problem that workability is lost during assembly work.

Therefore, in connecting the files used for reinforcing soft grounds integrally to the upper and lower parts, there is a desperate need for a file joining device that makes it possible to connect the files together more easily and conveniently without performing the fastening bolt operation by the workers have.

KR Domestic Registration No. 10-0835778, KR Domestic Registration No. 10-1056655, KR Domestic Registration No. 10-1207092.

The present invention has been developed in order to overcome the problems of the prior art described above and to provide various additional advantages, and it is an object of the present invention to provide an apparatus and a method for connecting a file, The present invention is also directed to a concrete pile and steel pipe jointing device which is easy to connect and easy to work with.

It is another object of the present invention to provide a concrete pile and a steel pipe jointing device in which a separate joint ring is not used and a product itself has a simple structure.

It is another object of the present invention to provide a concrete file and steel pipe jointing device which has a joint structure formed between split blocks formed of a divided body so as to have convenience and workability to easily engage anyone.

The above object is achieved by a concrete pile and steel pipe pile joint provided according to the present invention.

According to an aspect of the present invention, there is provided a concrete file and steel pipe jointing device comprising: a plurality of ring-shaped joint blocks fastened to opposite ends of files used for soil strengthening to bolt the files in an upright state; And forcible fitting means for tightly and integrally joining the joint blocks by forcibly engaging the fitting projections and the fitting holes which are projected from the opposing faces of the joint blocks at predetermined intervals along the circumference and protruding from each other, .

In one embodiment, the tip ends of the fitting protrusions are formed as a plurality of divided bodies so as to have a conical shape so that they can be easily inserted along the corresponding conical surfaces provided in the opening portions of the fitting holes, and each of the fitting protrusions and the fitting holes And a locking protrusion protruding from the locking protrusions of the fitting holes to protrude from the fitting protrusions of the fitting holes is formed at the center of each of the fitting holes. .

In another embodiment, the joint blocks are provided with reinforcing annular walls having concentric circles and are divided into at least three or more block pieces, and opposite end portions of the divided block pieces are fitted with fitting fitting projections and fitting grooves .

In another embodiment, the coupling blocks are provided with reinforcing annular walls having concentric circles to form a U-shaped structure with one side open in cross section.

In another embodiment, the fitting protrusions and the fitting holes are detachably coupled from the coupling blocks.

In still another embodiment, the fastening bolts are provided with fastening bolts for preventing reverse rotation at the bottom surface of the fastening bolt.

According to the present invention, the upper and lower connection of the files provided for the reinforcement work of the soft ground can be constituted by a fitting-coupling type without bolt fastening, so that even an unskilled person can easily connect.

In addition, the present invention achieves a simple structure of a jointing device which does not require the use of a separate joint ring, and also provides an effect that it can be manufactured and supplied at a low price.

In addition, the joint blocks formed by the divided bodies are formed in an interlocking manner to provide an effect that anyone can easily fit them together.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a joint apparatus of a concrete file and a steel pipe file according to the present invention,
Fig. 2 is a sectional view showing a coupled state along the II line direction of Fig. 1,
FIG. 3 is an exploded perspective view showing only a joint apparatus of a concrete file and a steel pipe file according to the present invention in FIG. 1,
FIG. 4 is a perspective view showing the appearance of the coupled state of FIG. 3,
FIG. 5 is a perspective view showing only a part of a concrete block A of a concrete file and a steel pipe file in FIG. 3,
6 is a cross-sectional view taken along line II-II in Fig. 5,
FIG. 7 is a perspective view showing the inside of a concrete file and a part of a joint pipe of a steel pipe file separated from each other only in FIG.
8 is a cross-sectional view taken along line III-III in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a concrete file and a steel pipe joint according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a joint device of a concrete file and a steel pipe file according to the present invention, and FIG. 2 is a cross-sectional view showing a coupled state along the line I-I of FIG.

As shown in the drawings, when at least a plurality of files 10a and 10b are used in a file used for soil strengthening, the joint device 100 of the concrete file and the steel pipe file according to the present invention is constructed such that the files 10a The coupling device 100 is coupled to the opposite ends of the files 10a and 10b so as to be securely fixed with the anti-reverse rotation bolts 150 so that the files 10a and 10b And a plurality of ring-shaped joint blocks 110 and 120 for coupling the upper and lower ring-shaped joints 110 and 120, respectively. The ring-shaped joint blocks 110 and 120 are made of a metal material so as to maintain strength and are formed to have the same diameter as the files 10a and 10b to be connected so that even after connection, To form a connecting surface.

The ring-shaped joint blocks 110 and 120 are formed with fitting protrusions 130 and fitting holes 140 protruding from the opposite surfaces of the ring-shaped joint blocks 110 and 120 at predetermined intervals along the circumferential direction of the joint blocks 110 and 120 A fitting member 160 of a forced fit type is provided.

Therefore, forcible coupling between the fitting protrusions 130 of the coupling blocks 110 and 120 and the fitting holes 140 positioned opposite to the fitting protrusions 130 of the coupling blocks 110 and 120 can be achieved by previously mounting the bolts 150 on the files 10a and 10b, The plurality of files 10a and 10b may be integrally joined together as shown in FIG. 2 so that the plurality of files 10a and 10b are separately formed as in the conventional arts (refer to Patent Documents 1 to 3) There is an advantage in that it can be easily connected without troublesome and complicated bolt fastening operation.

That is, when the upper joint blocks 110 are brought into contact with the lower joint block 120, the load applied from the upper file 10a is transferred through the lower joint blocks 110 10b. Therefore, the upper joint blocks 110 can be easily coupled to the joint block 120 coupled to the lower joint pile 10b without a large resistance, and the joint blocks 110 and 120, As shown in Fig. 2, to form a tightly coupled state.

The tight coupling of the coupling blocks 110 and 120 positioned above and below, as indicated by the illustration of FIG. 2, is the same as the coupling blocks provided in the file connection of the prior arts (see Patent References 1 to 3) In order to secure a work space for bolt fastening, it is necessary to form upper and lower plates with an interval (a space that can be fastened by bolt insertion) to the upper and lower parts, (Belt) that binds the circumference of the connecting block in consideration of weakening the strength of the hollow space formed in the upper and lower plates, and the bonding operation of the outer ring is also advantageous There is an advantage of being unnecessary.

FIG. 3 is an exploded perspective view showing only a joint device of a concrete file and a steel pipe file according to the present invention in FIG. 1, and FIG. 4 is a perspective view showing an appearance of the jointed state of FIG.

As shown in the drawing, the present embodiment shows a detailed three-dimensional structure of the ring-shaped joint blocks 110 and 120. The ring-shaped joint blocks 110 and 120 are arranged in the opposite end faces of the files 10a and 10b The ring-shaped joint blocks 110 and 120 fixed by the bolts 150 (see FIGS. 1 and 2) are provided with reinforcing annular walls 112a and 112b (122a and 122b) concentric with the hollow base Shaped structure of which one side is opened when viewed in cross section.

In addition, although the ring-shaped joint blocks 110 and 120 constructed as described above can be configured in one integrated form, at least three or more joint block pieces 110 and 120 are required for space utilization and convenience in operation and transportation, (114a, 114b, 114c) (124a, 124b, 124c).

In addition, in order to make directional and easy coupling to the opposite ends of the separated and configured joint block pieces 114a, 114b and 114c (124a, 124b and 124c), the fitting fitting protrusions 116 and 126 and the fitting grooves 118 and 128 ) Were installed. The fitting structure of the joint block parts 114a, 114b, and 114c (124a, 124b, and 124c) can be improved in workability as compared with the structure in which the joint blocks separately configured in the conventional patent document 3 can be fastened with a bolt There is a much more advantageous advantage to being improved.

A bolt fastening hole 152 for fastening the anti-reverse rotation bolt 152 is provided around the bolt fastening hole 152. The bolt fastening hole 152 is provided around the bolt fastening hole 152 for preventing reverse rotation There is no risk or danger that the bolt 150 is easily loosened due to an external impact or other mechanical factors after the bolt 150 is fastened.

Although the embodiment has been described by way of example in which the joint blocks 110 and 120 are divided into three parts, it can be understood from the above embodiment that the joint blocks 110 and 120 can be separated more than necessary.

FIG. 5 is a perspective view showing only a part of a concrete block A of a concrete file and a steel pipe file in FIG. 3, and FIG. 6 is a cross-sectional view taken along the II- FIG. 8 is a cross-sectional view taken along the line III-III of FIG. 7. FIG. 8 is a perspective view of the concrete file and a part of a joint pipe of a steel pipe file. FIG.

As shown in the drawing, the present embodiment is characterized in that the fitting portions 160 (see FIGS. 1 and 3), which function to easily couple the joint blocks 110 and 120 without separating them mutually, will be.

The fitting unit 160 includes fitting protrusions 130 protruding from the opposite surfaces of the coupling blocks 110 and 120 at predetermined intervals along the circumferential direction of the coupling blocks 110 and 120, (See FIGS. 1 and 3), the coupling of the coupling blocks 110 and 120 can be easily combined even by an unskilled person.

5 and 6, among the fitting protrusions 130 and the fitting holes 140 constituting the fitting unit 160, the fitting protrusions 130 Is divided into a plurality of divided bodies 131 having elasticity so that the distal end thereof forms a conical shape 132 and is coupled to the inside of the insertion holes 140 of the joint blocks 120 positioned on the other side The insertion protrusions 130 can be inserted smoothly without a large resistance even if a large load is not applied due to the load applied from the weight of the integrally coupled pile 10a, The split bodies 131 are returned to their original positions after passing through the fitting holes 140 and are separated from the split bodies 131 The engagement protrusion 134 formed on the entire circumference of the insertion hole 140 corresponds to the opening edge of the insertion hole 140 So that the fastening protrusion 144 is formed integrally with the locking protrusion 144, thereby preventing the fastening.

The detailed structure of the insertion holes 140 provided for the engagement of the fitting protrusions 130 will be described with reference to FIGS. 7 and 8. FIG.

The inner circumferential surface of the opening 141 of the fitting hole 140 is formed with a conical surface 142 which is provided in a radially outward direction in correspondence with the concave surface 132 of the fitting protrusions 130, 130 can be smoothly inserted into the insertion holes 140 without any major trouble at all times and can be smoothly inserted into the insertion holes 140 immediately below the conical surface 142 of the opening 141 of the insertion holes 140 The engagement protrusions 144 corresponding to the inclined protrusions 134 of the fitting protrusions 130 inserted through the opening 141 and completely inserted into the fitting holes 140 are formed in the fitting holes 140 The insertion protrusions 130 are prevented from being detached from the insertion holes 140.

A pressing protrusion 146 having a pointed end is formed at each center of the fitting holes 140 so as not to interfere with insertion of the fitting protrusions 130. 8, when the insertion protrusions 130 are inserted into the insertion holes 140, the pressing protrusions 146 are divided into a plurality of divided protrusions 131 The engaging protrusions 134 of the engaging projections 130 engage with the engaging holes 140 of the engaging protrusions 130. As a result, So that it is in a state of being in tight contact with the latching jaw 144 of the latching member 144. [

The fitting protrusions 130 and the fitting holes 140 described above may be damaged when the coupling blocks 110 and 120 are damaged due to mutual collision or external impact during transportation or storage, The threaded portions 135 and 145 are provided so as to be separated from the body of the joint blocks 110 and 120 to replace or replace only the joints 140 with a new one.

In the above embodiment, the joint device 100 according to the present invention is applied to a concrete file. However, it can be seen from the above embodiment that the joint device 100 according to the present invention can be applied to a steel pipe file. You will understand.

The present invention can combine the files used for strengthening soft grounds vertically without joining separate bolts, thereby reducing the work time and labor saving the operator to easily combine the files. .

While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

10a, 10b: File
100: Joints of concrete files and steel pipe files
110: ring shaped joint block
114a, 114b and 114c:
116:
118: Fitting groove
120: Ring-shaped joint block
124a, 124b, and 124c:
126:
128: Fitting groove
150: Anti-reverse bolt
160:
130:
140: insert ball
146: pressing projection

Claims (6)

A plurality of ring-shaped joint blocks fastened to the opposite ends of the files used for strengthening the ground by bolts and provided for coupling the files in an upright state; And
And a forcible fitting unit for tightly and integrally joining the joint blocks by forcibly engaging the fitting protrusions and the fitting holes which are protruded to be opposed to each other at regular intervals along the circumference from the opposite faces of the joint blocks Concrete files and steel pipe joints. The method according to claim 1,
Each of the tip ends of the fitting protrusions is constituted by a plurality of divided bodies so as to have a conical shape so as to be easily inserted along the corresponding conical surface provided in the opening of the fitting holes, and each of the fitting protrusions and the fitting holes And a pressing protrusion protruding from the engaging jaw portion of the fitting protrusions so as to come into close contact with the engaging jaw portions of the fitting holes protrudes from the center of each of the fitting holes. Device. 3. The method of claim 2,
Wherein the joint blocks are provided with reinforcing annular walls having concentric circles and are divided into at least three or more block pieces, and the opposite end portions of the divided block pieces are provided with fitting fitting projections and fitting grooves which are mutually fitted with each other. And steel pipe joints. The method of claim 3,
Wherein the joint blocks are provided with reinforcing annular walls having concentric circles to form a U-shaped structure with one side open when viewed in cross section. 5. The method of any one of claims 1 to 4,
Wherein the fitting protrusions and the fitting holes are detachably coupled to the coupling blocks. 6. The method of claim 5,
Wherein the fastening bolts are provided with hooks for preventing reverse rotation on the bottom surface of the fastening bolt.

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