KR101494132B1 - Self reliance type sheathing structure - Google Patents

Abstract

The present invention relates to a self-supported earth retaining structure capable of supporting an upper end of an H-pile and a construction method thereof, wherein the upper end of the H-pile is supported by a steel wire to improve constructability, and to perform re-tensioning work any time for the steel wire when the H-pile is displaced. The self-supported earth retaining structure includes: H-piles (10) driven at regular intervals along a boundary region of an excavation area; a concrete block (20) provided on the outside of an upper end of the H-pile (10); a coupling seat (30) made of metal placed on an upper portion of the concrete block (20) of which one side is fastened to the H-pile (10) by a bolt (11); steel wires (40) inserted in anchor holes (41) formed on the outside of the H-pile (10) at a given angle and fixated by a grout material of which an upper portion penetrates the coupling seat (30) and the concrete block (20); a headcorn (50) installed to the upper portion of the coupling seat (30) to fixate the upper end of the steel wire (40); and a steel wire protection cap (60) to prevent the steel wire (40) penetrating the headcorn (5) from being exposed outwardly.

Description

{SELF RELIANCE TYPE SHEATHING STRUCTURE}

The present invention relates to a self-supporting type earth retaining structure, and more particularly, to provide a stable and efficient support for a thumb pile when performing a thumb pile retention method.

Generally, the thumb pile retention method is a kind of retention type retention method, and it is adopted by a method of inserting a pile of a thumb (H-Pile) at regular intervals or inserting it after perforation, and moving the soil- This is a method of forming a wall by sandwiching it between piles, such as a pile pile method, a sheet pile method, a SCW, and a CIP.

FIG. 1 is a schematic view showing the construction of a retaining structure according to a thumb pile erosion preventing method in a conventional retaining method.

A plurality of thumb piles (H beams) 1 vertically installed so as to face each other with their mutual grooves facing each other, and a dust plate 100 for preventing the dust mites 2 inserted in the grooves from being collapsed forward .

As the current plate 100, a wood plate or a steel plate having a predetermined size is generally used, and a structure in which a wall is formed by laminating it and a wedge is installed to fix the laminated plate is used.

However, in such a conventional artificial pile cladding method, since the H beam can not resist the earth pressure of the rear soil when performing the tricky trench construction, a large number of support materials (Strut, Earth Anchor, Raker Etc.). This method is not only economical, but also makes it difficult to secure a work space. Especially, when there are obstacles in the vicinity, it is difficult to construct and structurally inefficient.

As a conventional technique for solving such problems, Japanese Patent Laid-Open No. 2009-91460 has proposed a technique that can sufficiently resist the earth pressure of the rear soil through the two-row thumb pile retention method.

However, in the above-mentioned prior art, there has been a problem that the construction cost increase and the period of time are increased due to the construction of the thumb pile in two rows, and there is no proper countermeasure for the deformation of the thumb pile due to the over-

The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a self-supporting type earth retaining structure structure and a construction method in which a top end portion of a thumb pile is supported, have.

To achieve the above object, according to the present invention, there is provided an earth retaining structure comprising: a thumb pile inserted at a predetermined interval along a boundary of a terraced section; A concrete block formed at an upper outer side of the thumb pile; A connecting base of a metal material which is seated on an upper portion of the concrete block and one side of which is fastened by a thumb pile and a bolt; A steel wire inserted into an anchor hole formed at an outer peripheral side of the thumb pile and fixed by a grout material, the upper end of the steel pile being installed to penetrate through a connecting block and a concrete block; A head cone installed at an upper portion of the connection pedestal for fixing the upper end of the steel wire; And a steel wire protecting cap for preventing external exposure of the steel wire passing through the head cone.

Also, the earth retaining method of the present invention includes: a thumb pile installing step in which a thumb pile is inserted at regular intervals along a boundary portion of a terraced section; A block trenching step of forming a trench groove for pouring a concrete block outside the thumb pile; A steel wire installation step of installing a steel wire in a slant form at a predetermined angle on the ter- minator groove forming part; A concrete block installing step of placing a concrete block on the block terrace to form a concrete block; A steel pipe protecting tube installed in the concrete block to protect the steel pipe; A connection pedestal seating step in which a metal pedestal for connection with the thumb pile is seated on the concrete block; A tensioning step of tensioning the upper end of the steel wire exposed to the upper portion of the connection pedestal; A head cone fixing step of fixing a head cone to an upper portion of the connecting pedestal in order to fix the upper end of the tensioned steel wire; And a step of installing a steel wire protecting cap for covering the head cone with a steel wire protecting cap to prevent external exposure of the head cone and the steel wire.

The self-supporting earth retaining structure according to the present invention is not provided with an earth anchor at the stop of the pile as in the prior art, and provides the upper support structure of the thumb pile, thereby improving the economical efficiency and the workability. At the time of displacement of the earth retaining pile, It is possible to prevent the occurrence of collapse by re-tensioning.

In addition, it can be installed in work environments that can not be constructed by existing methods such as sewage anchor due to surrounding obstacles such as sewage pipes, various manholes, and close underground structures, and it is possible to reduce the air of earthworks and to reduce the construction expenses such as earth anchor and strut, Which is an advantage of the present invention.

FIG. 1 is a view showing a conventional installation of a retaining structure.
FIG. 2 is a sectional view of an earth retaining structure according to a first embodiment of the present invention. FIG.
3 is an enlarged view of part A of Fig.
Fig. 4 is a plane structural view taken along the line A of Fig. 2; Fig.
5 is an enlarged view of a portion B in Fig.
6 is a flow chart of a construction procedure of an earth retaining structure of the present invention.
7 to 14 are views showing the earth retaining construction process of the first embodiment of the present invention.
FIG. 15 is a plan view of the earth retaining structure in the first embodiment of the present invention. FIG.
16 is a sectional view of the earth retaining structure according to the second embodiment of the present invention.
17 is a planar structural view of a second embodiment of the present invention.
18 is a cross-sectional view of the earth retaining structure according to the third embodiment of the present invention.
Fig. 19 is a planar structural view according to the third embodiment of the present invention; Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the construction of the self-supporting type earth retaining structure according to the first embodiment of the present invention will be described with reference to FIG. 2 to FIG.

That is, as shown in the figure, a concrete block 20 is installed outside the upper end of the thumb pile 10 for supporting the upper end of the thumb pile 10 inserted at regular intervals along the boundary portion of the terrestrial zone, 20 is fastened by a thumb pile 10 and a bolt 11 at one side thereof and a connecting seat 30 made of a metal having a through hole (not shown) A steel wire inserted into the anchor hole 41 formed at an angle of inclination outside the thumb pile 10 and fixed by the grout material passes through the connecting block 30 and the concrete block 20 do.

A head cone 50 is provided above the connection pedestal 30 in order to fix the upper end of the steel wire 40 with the wedge 52 and the steel wire 40 passing through the head cone 50 is exposed It can be confirmed that the steel wire protecting cap 60 is installed at the upper end.

In the present embodiment, the thumb pile 10 has a cross-sectional structure of an H beam shape, and a reinforcing plate 13 of a " C "shape is formed on both sides of the upper end where the connection is made with the connecting pedestal 30, And a cushioning rubber plate 14 for preventing direct contact between the thumb pile 10 and the reinforcing plate 13 is inserted in a portion where the bolt 12 is engaged, A reinforcing steel plate 15 for dispersing the bolt fastening force is formed on the outside surface of the thumb pile 10. [ By mounting the reinforcing plate 13 and the reinforcing steel plate 15 in this way, it is possible to prevent deformation of the upper end portion of the thumb pile 10 to which the tensile force of the steel wire 40 is applied.

A steel wire protecting tube 70 for protecting the steel wire 40 is embedded in the concrete block 20 and a stiffener 80 for reinforcing the tensile supporting force of the connecting seat 30 is provided in the connecting seat 30. [ Is formed on the inner wall surface of the through-hole.

The head cone 50 is formed with an inclined surface 51 having a predetermined angle on the upper surface and a pressure plate 90 for pressurizing the connecting pedestal 30 is formed below the head cone 50.

The construction of the self-supporting earth retaining structure of the thumb pile upper support type according to the present invention will be described with reference to the flowchart of FIG. 6 and the process diagram of FIG. 7 to FIG.

<Installation of the stiff pile> (ST 1)

First, a thumb-pile installation step is performed in which a H-beam-shaped thumb pile 10 is inserted at regular intervals along the boundary of the ter- minator zone as shown in Fig.

That is, at this time, the perforation is vertically performed using a perforator, and then the thumb pile 10 is inserted into the perforated area.

&Lt; Blocking > (ST 2)

Thereafter, a block grooving step for forming a grooving groove 21 for pouring a concrete block as shown in FIG. 8 is performed outside the upper end of the thumb pile 10.

<Steel wire installation> (ST 3)

9, the steel wire 40 is inserted into the anchor hole 41, and the steel wire 40 is inserted into the anchor hole 41, The installation of the steel wire is carried out.

In this case, the upper end of the steel wire 40 and the grooving groove 21 are exposed at this time. After the steel wire 40 is inserted, the grouting hose 42 is inserted into the anchor hole 41, So that the steel wire 40 can be fixed.

<Concrete block construction> (ST 4)

10, the concrete block 20 is installed on the ter- mator grooves 21 when the concrete line is fixed by the above process. In order to protect the steel line 40 during the concrete pouring, It is preferable that the steel pipe protecting pipe 70 is installed so as to surround the steel wire 40 exposed in the groove 21, and then the concrete is poured.

<Seat of the connecting base> (ST 5)

When the construction of the concrete block 20 is completed as described above, the metal pedestal 30 for connection to the thumb pile 10 is seated on the concrete block 20 as shown in FIG.

That is, at this time, it is possible to connect and fix the top of the thumb pile 10 by using the fastening bolts 11 after seating the connecting base 30 in a rectangular shape.

<River cactus> (ST 6)

Then, the upper end of the steel wire 40 exposed above the connection pedestal 30 is tensioned using a tensioner.

<Installation of head cone> (ST 7)

12, the head cone 50 is fixed to the upper portion of the connection pedestal 30 in order to fix the upper end of the tensile steel wire 40. As shown in FIG.

Particularly, the head cone 50 at this time has an asymmetric shape in which the upper surface forms an inclined surface 51 so as to form a vertical surface to the progress direction of the steel wire 40, and the steel wire 40 is fixed by the wedge 52 Thereby preventing the steel wire 40 from loosening.

<Installation of steel protection cap> (ST 8)

The steel wire protecting cap 60 is placed on the head cone 50 to prevent the head cone 50 and the steel wire 40 from being exposed to the outside. Thereby achieving a state of being supported.

Thereafter, as shown in FIGS. 13 and 14, after the wale band 100 is installed in the trenching process, an additional trenching operation is performed and a soil plate 200 is installed between the thumb piles 10 to complete the self- It can be seen that.

Since the earth anchor is not installed at the stop of the pile as in the conventional art, the self-supporting earth retaining facility of the present invention improves the economical efficiency and the workability, and the re-tensioning operation of the steel wire 40 at any time when the earth retaining pile 10 is displaced It is possible to prevent the occurrence of a collapse accident.

In addition, it shows the advantage of saving the earthworks air and reducing the construction cost due to the unused support materials such as earth anchor and strut.

16 and 17 show a self-supporting type earth retaining structure construction according to a second embodiment of the present invention. In the present embodiment, the thumb piles 10 are continuously connected to each other along the boundary of the ter- And a band material 100 for supporting between the thumb piles 10 and the connecting pedestals 30 is welded and fixed between the thumb piles 10 and the connecting pedestals 30.

That is, the band material 100 is joined by the metal connecting base 30 and the fastening bolt 11 ', and the band material 100 and the thumb pile 10 are welded and fixed, So that the self-supporting support can be achieved.

In addition, in the construction method for this purpose, a stiffener 10 for connecting the thumb piles 10 installed at regular intervals after the connection pedestal seating step ST 5 and for fixing the connecting pedestal 30 and the thumb pile 10 100 is installed on the upper side of the concrete block 20 is preferably added.

In addition, since the sheet pile 10 is used as the thumb pile 10, it is unnecessary to provide a separate soil plate.

18 and 19 show a self-supporting type earth retaining structure construction according to a third embodiment of the present invention. In the present embodiment, the thumb piles 10 are formed of H-shaped steel for CIP (Cast In Pile) .

That is, at this time, the vertical piercing is continuously performed along the boundary of the terraced area, the thumb piles 10 are inserted at regular intervals, and the reinforcing bar 10a for CIP is installed at the perforation between the thumb piles 10 do.

The stiffener 100 is welded between the thumb pile 10 and the connecting pedestal 30 so as to support the thumb pile 10. The thumb pile 10 and the strip The connecting material 110 for connection between the first and second fabrics 100 may be additionally provided.

Therefore, the thumb pile can be constructed in the form of various embodiments as described above, and the upper end portion of the thumb pile 10 is supported by the steel wire 40 to provide a self-supporting structure, thereby improving the economical efficiency and workability Can be achieved.

Further, when the displacement of the earth retaining thumb pile is generated, the steel wire protecting cap 60 and the head cone 50 are removed at any time, and the steel wire 40 can be re-tensioned, thereby preventing the collapse accident from occurring.

10: thumb pile 11, 11 ', 12: fastening bolt
13: reinforcing plate 14: buffering rubber plate
15: Reinforced steel plate 20: Concrete block
30: connecting base 40: steel wire
50: head cone 51: inclined surface
52: wedge 60: steel wire protecting cap
70: Steel wire protection pipe 80: Stiffener
90: Platen 100: Strip material
200: Bunting plate

Claims (8)

Shaped reinforcing plate 13 is symmetrically connected to the bolts 12 on both sides of the upper end portion of the bolt 12, 12), a cushioning rubber plate 14 for preventing direct contact between the reinforcing plates 13 is inserted, and a reinforcing steel plate 15 for dispersing the bolt fastening force is formed on the outer side surface of the bolt- (10);
A concrete block 20 formed on the upper outside of the thumb pile 10;
A connection base 30 made of metal and formed on the upper part of the concrete block 20 and having one side thereof fastened by the thumb pile 10 and the bolt 11 and having a through hole penetrating up and down;
The upper part of the pile 10 is inserted through the anchor holes 41 formed at an angle to the outer side of the thumb pile 10 and is fixed by the grout material while the upper part is installed through the concrete block 30 and the concrete block 20 A steel wire 40;
A head cone (50) installed on the connection pedestal (30) to fix the upper end of the steel wire (40);
A steel wire protecting cap 60 for preventing external exposure of the steel wire 40 penetrating the head cone 50;
A steel wire protecting tube 70 embedded in the concrete block 20 to protect the steel wire 40;
A stiffener (80) configured to reinforce the tensile support force of the connecting pedestal (30) on the inner wall surface of the through hole of the connecting pedestal (30);
Wherein the uppermost pile upper end supporting type self-supporting type earth retaining structure is formed of a pile structure. delete A thumb pile (10) in the form of a sheet file which is continuously connected to a boundary portion of a terra cotta zone;
A concrete block 20 formed on the upper outside of the thumb pile 10;
A belt material 100 which is seated on an upper side of the concrete block 20 and is welded to the thumb pile 10;
A connection base 30 made of a metal material and configured to be seated on the other side of the upper portion of the concrete block 20 and connected to the band material 100 by a bolt 11 '
The upper part of the upper part of the pile 10 is inserted into an anchor hole formed at an angle to the outer side of the thumb pile 10 and fixed by a grout material. )and;
A head cone (50) installed on the connection pedestal (30) to fix the upper end of the steel wire (40);
A steel wire protecting cap 60 for preventing external exposure of the steel wire 40 penetrating the head cone 50;
A steel wire protecting tube 70 embedded in the concrete block 20 to protect the steel wire 40;
A stiffener (80) configured to reinforce the tensile support force of the connecting pedestal (30) on the inner wall surface of the through hole of the connecting pedestal (30);
Wherein the uppermost pile upper end supporting type self-supporting type earth retaining structure is formed of a pile structure. (10) in the form of an H-shaped steel which is installed at a predetermined interval along the boundary of the ter- minator zone;
A concrete block 20 formed on the upper outside of the thumb pile 10;
A belt material 100 which is seated on one side of the concrete block 20 and connected to the thumb pile 10 by a connecting member;
A connection base 30 made of a metal material and configured to be seated on the other side of the upper portion of the concrete block 20 and connected to the band material 100 by a bolt 11 '
The upper part of the upper part of the pile 10 is inserted into an anchor hole formed at an angle to the outer side of the thumb pile 10 and fixed by a grout material. )and;
A head cone (50) installed on the connection pedestal (30) to fix the upper end of the steel wire (40);
A steel wire protecting cap 60 for preventing external exposure of the steel wire 40 penetrating the head cone 50;
A steel wire protecting tube 70 embedded in the concrete block 20 to protect the steel wire 40;
A stiffener (80) configured to reinforce the tensile support force of the connecting pedestal (30) on the inner wall surface of the through hole of the connecting pedestal (30);
Wherein the uppermost pile upper end supporting type self-supporting type earth retaining structure is formed of a pile structure. delete The method of claim 1, 3, or 4,
Wherein the head cone (50) forms an inclined surface (51) at an upper surface and a pressure plate (90) for pressurizing the connecting pedestal (30) is formed below the head cone (50) Support type self - supporting type earth retaining facility. delete delete

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