KR20050014367A - Sheet type earth retaining plate and fixing method therefor - Google Patents

Abstract

PURPOSE: A sheet-type retaining plate and a fixing method thereof are provided to prevent collapse of earth and sand by fixing both ends of a lightweight material having excellent tensile strength to H-beams and to facilitate carriage and installation. CONSTITUTION: In a sheet-type retaining plate(10), the ends of the retaining plate are fixed to two H-beams for excavation and tensile strength is achieved and thus collapse of earth and sand is prevented correspondently to earth pressure. The sheet-type retaining plate has a nonwoven fabric(11) facing earth and sand; a mesh(12) of a grid-patterned shape opposed to the nonwoven fabric; and plural iron pieces(13) sandwiched between the nonwoven fabric and the mesh in the longitudinal direction. The nonwoven fabric, the mesh, and the iron pieces are integrally formed. The iron pieces have strength for fixing both ends of the retaining plate to the H-beams. The sheet-type retaining plate is formed in a roll type and is cut to be used in length required.

Description

Sheet type earth retaining plate and fixing method therefor}

The present invention relates to a sheet-like earth plate and a fixing method thereof to prevent the soil wall from falling down, such as tunnel construction, trench construction or rock fracture protection facility construction, and more specifically, by binding both ends of the sheet-like earth plate to the H-beam A sheet-like earth plate and a method of fixing the same, which correspond to earth pressure using only the tensile strength of the earth plate.

In general, the H-beam (1) is grounded at regular intervals on the ground, as shown in Figure 1 to prevent the collapse or leakage of soil at the edge of the ground excavation during construction of underground construction of the building, or incision during civil engineering After fixing to a predetermined depth in, the earthen board construction in the form of sandwiching the earth plate (2) between the H-beam (1) is made, generally the earth plate (2) is made of wood or bent iron plate have.

Accordingly, after the H-beam 1 is put on the ground, the earth and sand are excavated to a predetermined depth, and the earth plate 2 is sandwiched between the H-beams 1 so that the surrounding soil is not introduced into the construction site. Will not.

At this time, the earth plate 2 should have a flexural strength (compressive strength) that can support the earth pressure acting on the underground incision surface. If the bending strength is insufficient compared with the earth pressure, shear failure (break) of the earth plate 2 occurs. This leaves the flange of the H-beam 1 and leads to the collapse of the soil.

Therefore, in order to achieve the purpose of the earth block, the earth plate 2 must have a bending strength that can correspond to earth pressure, that is, compressive strength and tensile strength at the same time, and the H-beam 1 supports such earth plate 2 not to be pushed backward. It serves as a support.

However, the flexural strength of the earth plate 2 has the property of increasing as the thickness of the material increases and the specific gravity or density of the material increases, so that the earth plate when the earth plate 2 is applied to the earthquake construction in which earth pressure is largely applied. There was a disadvantage in that the volume or weight of (2) must be large.

This is a problem that ultimately lowers the work efficiency because it is inconvenient when transporting or constructing the earth plate 2, and also reduces the external dimension of the earth plate 2 in order to facilitate the workability and transport and installation of the earth plate (2). As a result, many joints are generated, which makes the waterproof design inherently difficult.

In the conventional earth plate, both ends of a bent steel plate, etc., for reinforcing a square material having a constant flexural strength are inserted into the flange of the H-beam, thereby adopting a method corresponding to earth pressure, and thus, it is impossible to effectively respond to earth pressure. .

In the present invention, in the case of fishing line or steel wire composed of polymer resin, the bending strength is slight enough to be impossible to measure, but the pulling force (tensile strength) exhibits a considerable force as compared to the strength that resists bending. However, these materials are only available when both ends are fixed to achieve tensile strength.

The present invention has been conceived in this respect, the basic purpose of the present invention is to prevent the collapse of soil by fixing both ends of the material of lightweight yet excellent tensile strength to the H-beam, lightweight, easy to transport and install the sheet type To provide a soil plate.

Another object of the present invention is to provide an earth plate fixing method for coping with earth pressure using only the tensile strength of the earth plate by firmly fixing both ends of the sheet-like earth plate to the H-beam.

1 is a schematic perspective view showing the earth plate installation structure according to the prior art;

2 is a cross-sectional view of the earth plate installation structure cut along the line A-A in FIG.

3 is a perspective view showing the earth plate of the preferred embodiment according to the present invention:

4 is a sectional view taken along the line IV-IV- in FIG. 3;

5A and 5B are sectional views showing another embodiment of the earth plate according to the present invention;

6A and 6B are cross-sectional views illustrating a method of fixing the earth plate according to the present invention to an H-beam for a thumb pile using a C-clamp;

7 is a cross-sectional view of another embodiment showing a method of fixing the earth plate according to the present invention to an H-beam for a thumb pile using a C-clamp;

8A and 8B are cross-sectional views of another embodiment showing a method of securing the earth plate to an H-beam for a thumb pile using a C-clamp and wedges;

FIG. 9 is a cross-sectional view of another embodiment showing a method of securing a earth plate to an H-beam for a thumb pile using bolts and nuts. FIG.

10 is a cross-sectional view of another embodiment showing a method of securing a earth plate to an H-beam for a thumb pile using a jaw clamp;

11 and 12 are sectional views showing another embodiment of fixing the earth plate to the H-beam for the thumb pile;

Figure 13 is a sectional view showing an operating state of the means for preventing sagging of the sheet-like earth plate according to the present invention;

Fig. 14 is a sectional view showing a state in which the sheet-like earth plate according to the present invention is fixed to a strip.

FIG. 15 is a sectional view taken along the line XV-XV in FIG.

* Description of the symbols for the main parts of the drawings *

1: H-beam 1a: H-beam flange

10: sheet type earth plate 11: nonwoven fabric

12: mesh 13: iron strip

20,30: C-clamp 40: Wire

50: nettle 60: clamp

70: jaw clamp 80,90: vise clamp

100: strip material 110: reinforcing plate

120: support means

The sheet-like earth plate according to the present invention for achieving the above object, by fixing both ends to the two excavating H-beams to express tensile strength to prevent the fall of earth and sand in response to earth pressure Features of the jacket.

The earth plate used in the present invention, unlike the conventional earth plate, which requires both compressive and tensile strength at the same time, uses only the tensile strength corresponding to the stretching force of the material. Since it can be used as a core material, the weight is relatively light, which makes it possible to reduce manufacturing costs and improve work efficiency. The core substrate is preferably an expanded metal, a perforated steel sheet, a steel with a space formed such as a welded wire mesh, and a glass fiber mesh, and the core substrate may be used alone or in a stacked manner.

In addition, the center base is a space is formed is expected to leak out of the earth and sand as a means for preventing it using a non-woven fabric or coating plastic resin, the tensile reinforcing material of the glass fiber is iron piece or carbon fiber rod, aramid fiber rod, glass It is preferable to use a tensile reinforcing material such as a fiber rod.

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

Figure 3 shows a sheet-like earth plate 10 used in the present invention, the present invention is a tunnel construction, a trench construction or rock fracture protection facilities construction, such as to prevent the falling of the earth wall of both ends of the sheet-shaped earth plate H By binding to the beam 1 (see Fig. 1), only the tensile strength of the earth plate 10 is used to cope with earth pressure.

As shown in Figs. 3 and 4, the sheet-like earth plate 10 according to the present invention includes a nonwoven fabric 11 facing the earth and sand, a lattice-shaped mesh 12 and an earth plate facing the nonwoven fabric 11 ( 10) is required as a roll having integral strength of a plurality of iron pieces 13 sandwiched in the longitudinal direction between the nonwoven fabric 11 and the mesh 12 and having strength for fixing both ends of the H-beam 1 to each other. It can be cut and used for length.

As shown in FIG. 4, the sheet-like earth plate 10 is made of a nonwoven fabric 11 and a steel wire 12 to prevent the fine soil from flowing down, and any component of glass fiber, aramid fiber, and carbon fiber as shown in FIG. 5A. It is provided with a mesh 14 in the form of a grid pattern or made of a resin layer 15 laminated at a predetermined height on the upper and lower surfaces of the mesh 14, as shown in Figure 5b can be used to cut the required length as a roll form Of course.

6A and 6B show a method of fixing the sheet-like earth plate 10 according to the present invention to the H-beam 1, which is a C-clamp on the flange 1a of the excavating H-beam 1. By providing 20, the sheet-like earth plate 10 can be fixed. In other words, the C-clamps 20 are respectively inserted into the flanges 1a of the excavating H-beam 1, and both ends of the sheet-like earth plate 10 are inserted through the fasteners 21, and the fasteners 21 are Insert the tightening screw rod 22 at the end of the sheet and rotate the screw rod 22 so that the C-clamp 20 is retracted toward the center of the H-beam 1 as shown in FIG. 6B. The earth plate 10 will be in a tense state.

Therefore, both ends of the sheet-like earth plate 10 are fixed to the H-beam 1 in a tensioned state so that it is possible to cope with earth pressure using only the tensile strength of the sheet-like earth plate 10.

Fig. 7 shows another embodiment of the C-clamp 20 shown in Figs. 6A and 6B. The C-clamp 120 has a flow prevention for preventing flow between the H-beams 1. Since the portion 24 is formed, there is a sense of stability than the C-clamp 20 shown in Figs. 6A and 6B.

8A and 8B show another method of fixing both ends of the sheet-like earth plate 10, which inserts the C-clamp 30 into the flange 1a of the excavating H-beam 1, respectively. However, the wires 40 are respectively fixed to both ends of the adjacent sheet-like earth plate 10, and the wires 40 are penetrated through the C-clamp 30 to use the wedges 50 as shown in FIG. 8B. The tension of the sheet-like earth plate 10 is adjusted. Therefore, the wire 40 is bent through the hole (not shown) at the end of the C-clamp 30, so that the sheet-like earth plate 10 can maintain the tension state without the sagging of the wire 40. will be.

Fig. 9 shows another method of fixing both ends of the sheet-like earth plate 10 used in the present invention, and the fixing device used in this method is provided by the flange 1a of the excavating H-beam 1. The sheet-like earth plate 10 is fixed to the pressing members 62 and 63 which press the inner and outer sides by the nut 61, and the screw rod 64 formed integrally with the pressing member 62, and tightened as a nut 65. The clamp 60 is configured to adjust the tensile force of the sheet-like earth plate 10.

Therefore, by tightening the nut 61, the pressing members 62 and 63 are fixed to the H-beam 1, and the sheet-like earth plate 10 as shown in FIG.

Fig. 10 shows another method of fixing the sheet-like earth plate 10 to the H-beam 1, in which the sheet-like earth plate 10 is mounted outside the flange 1a of the excavating H-beam 1. The both ends of the flange 1a are fixed to the H-beam 1 using the jaw clamp 70 to correspond to earth pressure using only the tensile strength of the sheet-like earth plate 10. Here, the jaw clamp 70 is to adjust the jaw angle of the jaw clamp by rotating the screw rod (71).

Meanwhile, FIG. 11 shows another method of fixing both ends of the sheet-like earth plate 10, which uses the vise-shaped clamp 80 to externally open the flange 1a of the H-beam 1 for excavation. The sheet-like earth plate 10 is to be wrapped, the movable member 82 is slid by the screw rod 83 with respect to the main body 81 so that the vise-shaped clamp 80 is fixed to both ends of the flange (1a) The sheet-like earth plate 10 was fixed to the H-beam 1 to cope with earth pressure using only the tensile strength of the sheet-like earth plate 10.

In addition, as shown in FIG. 12, both ends of the flange 1a may be fixed to the H-beam 1 using a vise-shaped clamp 90, which is fixed to the outer side of the clamp 90. 91 can be formed to tighten the sheet-like earth plate 10 as a nut 92 so as to cope with earth pressure using only the tensile strength of the sheet-like earth plate 10. In FIG. 12, the same reference numerals as in FIG. Detailed description thereof will be omitted.

FIG. 13 shows sag preventing means 100 for preventing sagging of the sheet-like earth plate 10 having both ends fixed to an excavating H-beam 1, and the sag preventing means 100 is a sheet type. Even if the earth plate 10 is fixed to the H-beam 1 as shown in FIGS. 3 to 12, the sheet-like earth plate 10 may be stretched to prevent the earth plate 10 from functioning. As shown in FIG. 3, the crimp portions 101 are inserted by inserting the crimp portions 101 of the deflection prevention means 100 into the holes (not shown) of the sheet-like earth plate 10 shown in FIG. ) Is contracted in the direction of the arrow to tension the sheet-like earth plate (10).

14 and 15 show another embodiment for fixing the sheet-like earth plate 10 according to the present invention, which is a strip material 100 in the transverse direction on the front surface of the excavating H-beam 1 shown in FIG. ) To prevent the fall of earth and sand.

In other words, the sheet-like earth plate 10 is placed on the inner flange 100a of the strip member 100, and the reinforcement plate 110 is placed on the sheet-like earth plate 10 at the place where the excavation H-beam 1 is located. , Inserting the support means 120 between the reinforcing plate 11 and the outer flange (100b) of the strip member 100, the sheet-like earth plate 10 is fixed in a state in contact with the inner surface of the strip member 100, here In the support means 120 is preferably a fastener made of a rotatable bolt as shown in Figure 14, of course, a common wedge may be used.

As described above, the earth plate of the present invention uses only the tensile strength corresponding to the stretching force of the material, unlike the conventional earth plate which requires the compressive strength and the tensile strength of the material at the same time, so that the steel plate of the mesh structure having a smaller cross-sectional area than the steel plate In addition, glass fiber mesh can be used as the core material of earthen board, which makes it possible to reduce the manufacturing cost of consumable materials, and the weight is relatively light, thus improving the work efficiency during transportation and construction.

In addition, by securing the watertightness to the earth wall can be prevented the outflow of soil due to leakage.

Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited thereto, and many modifications and variations may be made without departing from the scope of the following claims.

For example, the fixing device used in the present invention may have various shapes in addition to those shown.

Claims (14)

A sheet-like earth plate, characterized in that both ends are fixed to two excavating H-beams (1) to express tensile strength to prevent the soil from falling down in response to soil pressure. According to claim 1, wherein the sheet-like earth plate 10 is a nonwoven fabric 11 facing the earth and sand, the grid-like mesh 12 and the opposite ends of the earth plate 10 facing the nonwoven fabric 11 A plurality of iron pieces 13 sandwiched between the nonwoven fabric 11 and the mesh 12 in their longitudinal direction, having a strength for fixing to the H-beam 1, are cut in the form of a roll as necessary to form a roll. A sheet-like earth plate, which can be used. According to claim 1, wherein the sheet-like earth plate 10 is a grid-like mesh made of any one of steel wire, glass fiber, aramid fiber and carbon fiber; Sheet-shaped earth plate, characterized in that consisting of a resin layer laminated on the upper and lower surfaces of the mesh to a certain height can be cut by the required length in the form of a roll. A method of fixing a sheet-like earth plate by fixing both ends of the sheet-like earth plate 10 to two excavating H-beams 1 to express tensile strength to prevent the soil from falling down in response to earth pressure. The method of claim 4, wherein both ends of the sheet-like earth plate 10 are fixed. Both ends of the sheet-like earth plate are inserted and installed in the flange 1a of the excavating H-beam 1, respectively, using C-clamps 20 having both ends of adjacent sheet-like earth plate 10 fixed thereto. A method of fixing a sheet-like earth plate by fixing to the H-beam (1) to correspond to the earth pressure using only the tensile strength of the sheet-like earth plate (10). 6. The method of claim 5, wherein the C-clamp (20) further comprises a flow preventing portion (24) for preventing flow between the H-beams. The method of claim 4, wherein both ends of the sheet-like earth plate 10 are fixed. Inserted into the flange (1a) of the excavating H-beam (1), respectively, the wire 40 is fixed to both ends of the adjacent sheet-like earth plate 10 so that the wedges through the C-clamp (30) A method of fixing a sheet-like earth plate, characterized in that the neck (50) to adjust the tension of the sheet-like earth plate (10). The method of claim 4, wherein both ends of the sheet-like earth plate 10 are fixed. Press members 62 and 63 which press the inner and outer sides of the flange 1a of the excavating H-beam 1 by the nut 61, and a screw rod 64 integrally formed with the press member 62. The sheet-like earth plate fixing method characterized in that it consists of a clamp (60) for fixing the sheet-like earth plate (10) and tightened as a nut (65) to adjust the tensile force of the sheet-like earth plate (10). The method of claim 4, wherein both ends of the sheet-like earth plate 10 are fixed. The sheet-like earth plate 10 surrounds the outside of the flange 1a of the excavating H-beam 1, and both ends of the flange 1a are attached to the H-beam 1 using a jaw clamp 70. Fixing the sheet-type earth plate, characterized in that to respond to the earth pressure using only the tensile strength of the sheet-like earth plate (10). The method of claim 4, wherein both ends of the sheet-like earth plate 10 are fixed. The sheet-like earth plate 10 is wrapped around the outside of the flange (1a) of the excavation H-beam (1), but the sheet-like earth plate (10) by fixing the vise-shaped clamp 80 to both ends of the flange (1a) A method of fixing a sheet-shaped earth plate, characterized in that to respond to the earth pressure using only the tensile strength of). The method of claim 4, wherein both ends of the sheet-like earth plate 10 are fixed. Fixing both ends of the flange (1a) to the H-beam (1) using a vise-shaped clamp (90); The fixing bolt 91 is formed on the outside of the clamp 90 to tighten the sheet-like earth plate 10 as the nut 92 so as to correspond to earth pressure using only the tensile strength of the sheet-like earth plate 10. Earth plate fixing method. The sheet-like earth plate according to any one of claims 4 to 11, wherein the sag preventing means 100 for preventing sagging of the sheet-like earth plate 10 whose both ends are fixed to the excavating H-beam 1 is provided. Fixed to (10) is a sheet-like earth plate fixing method characterized in that to improve the tensile force of the sheet-like earth plate (10). In the excavation H-beam (1) is inserted in the vertical direction, the sheet-like earth plate fixing method to prevent the fall of earth and sand by installing a band member 100 in the horizontal direction on the front of the H-beam (1) In: Placing the sheet-like earth plate (10) on the inner flange (100a) of the strip member (100); Placing a reinforcing plate (110) on the sheet-like earth plate (10) where the drilling H-beam (1) is located; By inserting the support means 120 between the reinforcing plate 11 and the outer flange (100b) of the strip member 100 is characterized in that the sheet-like earth plate 10 is fixed in contact with the inner surface of the strip member 100 Fixing sheet earth plate. The method of claim 12, wherein the support means 120 is a sheet-like earth plate fixing method characterized in that the fixture or wedge made of a rotatable bolt.