KR100575107B1 - construction of soil nailing for build up revetment - Google Patents

Abstract

The present invention relates to a nail nailing, the front wall forming the outer side, the side wall is formed symmetrically at a predetermined inclination angle from both ends of the front wall to the rear side, and the end of each side wall is supported by a fixing pin A partition wall forming a soil filling hole filled with earth and sand, a support wall extending to the rear of the partition wall, and a rear wall connecting the ends of the support wall and forming a soil filling hole filled with earth and sand, Retaining wall blocks each having a pair of insertion grooves formed on the upper surface, and a pair of cast steel bars are provided with a width corresponding to the insertion grooves so as to be inserted into the pair of insertion grooves. The reinforcement is provided with a reinforcing bar, and a pair of reinforcing bar fixing hole into which the other end of the reinforcing material is inserted, and a rectangular shape in which the nail is inserted and fixed at one end in the center part. It is characterized in that the connecting plate is formed with a nail fixing hole, the reinforcing bar fixing the main reinforcing bars inserted into the reinforcing bar fixing hole is provided.

Accordingly, by improving the coupling structure between the nail inserted into the ground and the deformed steel fastened to the nail, there is an effect that can smoothly eliminate the stress concentration generated in the joint portion, the reinforcement of the reinforcement is mounted on the retaining wall block and retaining wall block By improving the coupling structure there is an effect that can be prevented in advance to dismantle the fastening of the reinforcement and the retaining wall block by increasing the earth pressure.

Description

Construction of Soil-Nailing for Retaining Retaining Walls {construction of soil nailing for build up revetment}             

1 is a perspective view showing a fastening structure of a soil-nailing for retaining wall support according to the present invention.

Figure 2 is an exploded perspective view showing the retaining wall which is the main part of the fastening structure of the soil-nailing for retaining wall support according to the present invention.

Figure 3 is an exploded perspective view showing the connection state of the sole of the main part of the fastening structure of the soil-nailing for supporting the retaining wall according to the present invention.

Figure 4 is an exploded perspective view showing a connection state of the reinforcing plate which is the main part of the fastening structure of the soil-nailing for retaining wall support according to the present invention.

Figure 5 is a side cross-sectional view showing a nail connection state of the fastening structure of the soil-nailing for retaining wall support according to the present invention.

Figure 6 is a cross-sectional view showing a connecting rebar connection state of the fastening structure of the soil-nailing for retaining wall support according to the present invention.

Figure 7 is a side cross-sectional view showing the ground constructed by the fastening structure of the soil-nailing for retaining wall support according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: retaining wall block 13a: insertion groove

20: reinforcing material 21: cast iron

22: reinforcing bar 23: connecting bar

30: rebar connector 32: pressurization

34: coupling rod 40: reinforcing bar fixture

42: fixed pressure part 44: fixing nut

50: connection plate 60: nail

The present invention relates to a nail nailing, and more particularly, by improving the coupling structure of the nail is fixed in the inserted state inclined at a predetermined angle with respect to the ground, and the reinforcing material connected to the nail mounted on the retaining wall, The present invention relates to a fastening structure of a soil-nailing for retaining wall support, which can solve stress concentration applied to a connecting portion of a reinforcing material and can easily connect the retaining wall to the reinforcing material.

In general, in the case of constructing the structure on the basement or slope of the building, the stabilization work is performed to stabilize the slopes and vertically excavated slopes, such a conventional shovel construction, such as thumb pile, cross-stack pile, sheet pile (sheet pile) This method uses a large punching equipment, but the noise and vibration associated with installing piles are a problem, and the props narrow the construction space, making it difficult to transport gultotosa. Earth anchor method is easy to excavate, but construction takes a long time, and because the length of anchor is very long, temporary structures are often formed outside the site.

Accordingly, in recent years, the Soil Nailing method has been developed and widely used. This Soil Nailing method is a rebar as a reinforcing material and a rebar as a reinforcing material during excavation of slopes or buildings underground as described above. Excavation work can be carried out with low noise and low vibration because it uses relatively light weight equipment by reinforcing the excavation slope with only the front plate (shotcrete or concrete facing). As the depth of drilling is very short, it is a very advantageous construction method for urban construction such as minimizing the occurrence of disputes due to the invasion of borders of adjacent lands.

As described above, by reinforcing the soil using reinforcement (deformed reinforcing bar) to withstand tensile and shear forces on the cut slope, the reinforcing ingot forms a united block to function as a gravity retaining wall as a soil wall. Soil nailing method to keep the cut slope stable, it is possible to build a high stability retaining wall by forming a structure using the ground itself reinforced with nail.

In addition, since it is possible to construct with a small machine, it is effective in a narrow place or rugged terrain, and the construction method is simple, and there is little noise and vibration at work, so it is possible to construct near the residential area and also to control the movement of the surrounding ground such as earthquake. In the construction with high resistance, it is safe and it is possible to set slope slope according to the type of soil, and it is safe and widen the land use area, improve land use and preserve the surrounding environment.

However, the nail insertion of the soil nailing method is usually inserted at an inclination of about 15 ° or more with respect to the ground, and the deformed steel has a form in which earth pressure acts in the horizontal direction with respect to the ground. Intensive stress acts on the joints of the nail and the deformed steel, or there is a problem that can cause the collapse of the soil due to the joint breakage.

In addition, since the end portion of the deformed steel mounted on the retaining wall is simply installed in a state of being hung on a specific portion of the retaining wall, there is a problem in that the bent portion is damaged as the earth pressure increases, leading to the collapse of the retaining wall.

The present invention has been made in order to solve the above problems, by improving the coupling structure of the nail is inserted into the ground and the fixed steel fastened to the nail can solve the stress concentration occurring in the joint smoothly, the retaining wall The purpose of the present invention is to provide a fastening structure of soil-nailing for retaining wall support, which can prevent the disengagement of the retaining wall from the deformed steel by increasing the earth pressure by improving the coupling structure of the deformed steel to be connected.

Sole-nailing fastening structure for retaining wall support according to the present invention for achieving the above object, the front wall and the side wall formed symmetrically with a predetermined inclination angle from both ends of the front wall to the rear side and And a partition wall connecting the ends of each side wall to form a soil filling hole which is supported by the fixing pin and filled with earth and sand, a support wall extending to the rear of the partition wall, and an end of the support wall, A retaining wall block formed of a rear wall to form a filled soil filling hole, and having a pair of insertion grooves formed on upper surfaces of the partition wall and the rear wall, and an area corresponding to the insertion groove to be inserted into the pair of insertion grooves; Reinforcement and a pair of the main reinforcing bar is provided, the reinforcing bar is provided to connect the pair of the main reinforcing bar and at the same time the reinforcing bar is mounted on the partition wall, the beam A pair of reinforcing bar fixing holes into which the other end of the ash is inserted is formed, a connecting plate having a rectangular nail fixing hole in which a nail is inserted and fixed at one end in a central portion thereof, and a reinforcing bar fixing the main reinforcing bar inserted into the reinforcing steel fixing hole. Characterized in that the fixture is provided.

In addition, an inclined surface is formed such that one side is in contact with one surface of the connecting plate, the other side is perpendicular to the insertion angle of the nail, and an inclined washer is formed in which an inclined hole into which the nail is inserted is formed, and the connecting plate and the It is preferable that a nail fixture for fixing the nail penetrating the inclined washer is provided.

In addition, the nail fixture is a semi-circular metal material is formed on the inner circumferential surface is formed with a fixed jaw is inserted into the projection formed on the outer circumferential surface of the nail, a pair of nail pressing portion formed with a male screw portion on the outer circumferential surface, the nail screwed to the male screw portion It is preferable that it consists of a fixed nut.

In addition, the reinforcing bar is formed of a semi-circular metal material is formed on the inner circumferential surface of the projection projection formed on the outer peripheral surface of the main reinforcement, a pair of fixed pressing portion formed with a male screw portion on the outer circumferential surface, and fixed to the screw threaded portion It is preferably composed of a nut.

In addition, a connecting reinforcing bar is provided between the connecting plate and the main reinforcing bar, a fixing jaw is formed in the end of each reinforcing bar is formed in the inner peripheral surface of the projections formed on the outer peripheral surface of each reinforcement with a semi-circular metal material, the male thread is formed on the outer peripheral surface It is preferable that a pair of pressing portions are provided and connected by coupling rods having female threads corresponding to the male threads on both sides.

Hereinafter, with reference to the accompanying drawings will be described in detail the fastening structure of the soil-nailing for retaining wall support according to the present invention.

In the description of the present invention, terms defined are defined in consideration of functions in the present invention, which may vary according to the intention or custom of a person skilled in the art, and thus, limit the technical components of the present invention. It should not be understood as.

1 is a perspective view showing the fastening structure of the soil-nailing for retaining wall support according to the present invention, Figure 2 is an exploded perspective view showing a retaining wall which is a main part of the fastening structure of the soil-nailing for retaining wall support according to the invention 3 is an exploded perspective view showing a connection state of a sole which is a main part of a fastening structure of a soil-nailing for retaining wall support according to the present invention, and FIG. 4 is a fastening structure of a soil-nailing for retaining wall support according to the present invention. Figure 5 is an exploded perspective view showing a connection state of the reinforcement plate is a main part of, Figure 5 is a side cross-sectional view showing a nail connection state of the fastening structure of the soil-nailing for retaining wall support according to the present invention, Figure 6 is a retaining wall according to the present invention This is a cross-sectional view showing the connection rebar connection state of the fastening structure of the soil-nailing for supporting.

As shown, the fastening structure of the soil-nailing for retaining wall support according to the present invention includes a plurality of retaining wall blocks 10 for supporting soil and a nail 60 inserted into and fixed to an inclined surface D of a base plate. And, one side is fixed to the retaining wall block 10, the other side is provided with a steel strip (20) provided to be adjacent to the end of the nail (60), provided between the nail 60 and the reinforcing material 20 nail (60) ) And a connecting plate 50 capable of maintaining the angle at which the nail 60 and the reinforcing material 20 are installed at the same time as being connected to the reinforcing material 20 is provided.

The retaining wall block 10 includes a front wall 11 forming an outer side of the retaining wall block 10 to be stacked, a side wall 12 symmetrically formed at a predetermined inclination angle from both ends of the front wall 11 to the rear side, and The partition 13 which connects the edge part of each side wall 12, and forms the earth-filling hole 17 by which earth and sand are filled, the support wall 14 extended to the rear of the partition 13, and the support wall 14 The rear wall 15 is formed by connecting the ends of the to form a soil filling hole (17 ') is filled with the soil therebetween.

Here, insertion grooves 13a through which the main reinforcing bars 21 of the reinforcing material 20 are inserted and mounted are formed at both sides of the upper surface of the partition wall 13 and the rear wall 15, and the lower surface of the support wall 14 is disposed at the lower side of the support wall 14. An anchor 16 protruding to be supported by the retaining wall block body is formed.

Each of the components of the retaining wall block 10 is integrally formed of a porous concrete material having a predetermined strength to give a vegetation base.

The reinforcing material 20 is a pair of reinforcing bars 21 spaced at predetermined intervals, and a plurality of reinforcing bars 22 welded to each of the main reinforcing bars 21 between the main reinforcing bars 21 to connect the pair of main reinforcing bars 21. ) And one end is connected to the other end of the main reinforcing bar 21 by the reinforcing bar connector 30, and the other end is provided with a connecting reinforcing bar 23 coupled to the connecting plate 50.

Here, one end of the pair of the main reinforcing bar 21 is interposed in the insertion groove (13a) formed in the retaining block 10, the reinforcing bar 22 welded to the end of the main reinforcing bar 21 is mounted on the partition wall (13) It is provided to support the retaining wall block 10.

In addition, the reinforcing bar connector 30 is provided to connect the main reinforcing bar 21 and the connecting reinforcing bar 23 and at the same time to adjust the tensile force of the main reinforcing bar 21, each main reinforcing bar 21 and each connecting reinforcing bar 23 A pair of pressing portions 32 are respectively coupled to the ends of the) and a pair of pressing rods 34 are screwed to both sides is provided.

Here, the pressing portion 32 is formed of a semicircular metal material, and a fixing jaw 32b into which protrusions formed on the outer circumferential surface of each of the reinforcing bars 21 and 23 is formed on the inner circumferential surface thereof, and the outer circumferential surface is formed on the inner circumferential surface of the coupling rod 34. A male screw portion 32a corresponding to the formed female screw portion 34a is formed, and is seated in a form surrounding each end of the main reinforcing bar 21 and the connecting reinforcing bar 23 and screwed to the coupling rod 34.

In addition, the outer circumferential surface of the coupling rod 34 is a flat surface that is fastened by fixing tools (not shown) on both sides of the outer circumferential surface to fix the coupling rod 34 when the pressing portion 32 is coupled to the coupling rod 34. 34b is formed.

And, the other end of the connecting reinforcing bar 23 is provided with a reinforcing bar 40 to be inserted and fixed in the reinforcing bar fixing hole 54 formed in the connecting plate 50 to be described later, the reinforcing bar 40 is connected to the reinforcing bar ( 23 is provided with a fixed pressurizing portion 42 fixedly seated at the other end and a fixing nut 44 screwed to the outer surface of the fixed pressurizing portion 42.

Here, the fixed pressing portion 42 is formed of a semi-circular metal material, the fixing jaw (42b) is formed on the inner circumferential surface of the projection reinforcement is inserted into the outer circumferential surface of the connecting reinforcement 23, the female thread formed of the fixing nut 44 on the outer circumferential surface A male thread portion 42A corresponding to 44a is formed, and is seated in a form surrounding each end of the connecting reinforcement 23 and screwed to the fixing nut 44.

The connecting plate 50 has a long nail-shaped nail fixing groove 52 extending in the vertical direction so that one end of the nail 60 is inserted in the center portion, and the reinforcing material 20 is formed at both sides of the nail fixing hole 52. The connecting reinforcing bar 23 of the reinforcing bar fixing hole 54 is formed.

The nail 60 is provided with a nail 60 used in a conventional nail method, one surface such that the nail 60 is fixed to the outer end of the nail 60 by forming a predetermined inclination angle with respect to the connecting plate 50. The inclination washer 62 formed with the inclined surface 64 at a perceptual angle with respect to the installation angle of the nail 60 is provided, the inclination washer 62 is a variety of inclination so that the nail 60 can be replaced according to the inclination that is inserted into the ground It is provided, the inclined hole 63 is formed in which the outer end of the nail 60 is inserted in a direction that is perceptual to the inclined surface (64).

Then, the nail 60 penetrating the inclined washer 62 is fixed by the nail fixture 66, the nail fixture 66 is a pair of nail pressing portion 67 is fixed to the end of the nail 60 ) And a nail fixing nut 68 screwed to the outer surface of the nail presser 67.

Here, the nail fixing pressure part 67 is formed of a semi-circular metal material, the nail fixing jaw 67b into which protrusions formed on the outer circumferential surface of the nail 60 are inserted, and the nail fixing nut 68 is formed on the outer circumferential surface. A male screw portion 67a corresponding to the female screw portion 68a is formed to be seated in a form surrounding the end of the nail 60 and screwed to the nail fixing nut 68.

In addition, as shown in FIG. 6, when the connecting bar 23 is inclined at a predetermined angle with respect to the connecting plate 50 between the connecting plate 50 and each of the reinforcing bar connectors 30, the connecting bar 30 Inclined surface 64 'perpendicular to the installation angle of the reinforcing bar connector 30 is formed to closely contact the connecting plate 50, and the inclined hole 63 into which the connecting bar 23 is inserted with respect to the inclined surface 64'. An inclination washer 62 'in which') is formed may be provided.

Hereinafter, the installation state according to the fastening structure of the soil-nailing for retaining wall support as described above will be described with reference to the accompanying drawings.

Figure 7 is a side cross-sectional view showing the ground constructed by the fastening structure of the soil-nailing for retaining wall support according to the present invention.

As shown in the drawing, the main reinforcing bar 21 of the reinforcing material 20 is inserted into the insertion groove 15a of the retaining wall block 10, and the reinforcing bar 22 welded and fixed to one end of the main reinforcing bar 21 is retained wall. The state of being mounted on the partition wall 13 of the block 10 is maintained.

Then, the other end of the main reinforcing bar 21 of the reinforcing material 20 and one end of the connecting reinforcing bar 23 is coupled by the reinforcing bar connector 30, the connecting reinforcing bar 23 is a reinforcing bar fixing hole (of the connecting plate 50) 54) is fixed by the reinforcing bar 40

In addition, the nail 60 is poured in a state in which it is inserted into the base plate D with a predetermined inclination, and the outer end of the nail 60 is inserted into the nail fixing hole 52 formed in the connecting plate 50 to be inclined washer 62. And the nail fixture 66 are fixed to the connecting plate 50.

Here, a pair of pressure ports 32 screwed to both sides of the coupling rod 34 is rotated by rotating the coupling rod 34 connecting the main reinforcing bar 21 and the connecting reinforcing bar 23 While being transferred inward, the tensile force applied to the cast iron 21 can be adjusted.

In addition, the nail fixture 66 fixing the nail 60 to the connecting plate 50 and the connecting plate 50 is always in close contact with the nail fixture 66 against the connecting plate 50 by the inclined washer 62. The state can be maintained and the stress concentration generated in the connecting plate 50 can be eliminated.

Although described in detail with respect to preferred embodiments of the present invention as described above, those of ordinary skill in the art, without departing from the spirit and scope of the invention as defined in the appended claims Various modifications may be made to the invention. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.

As described above, the fastening structure of the soil-nailing for retaining wall support according to the present invention improves the coupling structure of the nail inserted into the ground and the fixed steel fastened to the nail, thereby smoothing the stress concentration occurring at the joint. There is an effect that can be eliminated, it is possible to prevent the fastening of the reinforcement and the retaining wall block disassembly by increasing the earth pressure by improving the coupling structure of the retaining wall block and the reinforcement is mounted on the retaining wall block.

Claims (5)

An earthwork filling work that is supported by the fixing pins while being connected by the fixing pins by connecting the front wall forming an outer side, a side wall symmetrically formed at a predetermined inclination angle from both ends of the front wall to the rear side, and end portions of the respective side walls. A partition wall forming a wall, a support wall extending to the rear of the partition wall, and a rear wall connecting end portions of the support wall to form earth and sand filling holes filled with earth and sand, respectively, on an upper surface of the partition wall and the rear wall, respectively. A retaining wall block in which a pair of insertion grooves are formed; A reinforcing member provided with a pair of main reinforcement bars having a width corresponding to the insertion grooves so as to be inserted into the pair of insertion grooves, and connecting the pair of main reinforcing bars and a reinforcing bar mounted on the partition wall at one end thereof; A pair of reinforcing bar fixing holes into which the other end of the reinforcing material is inserted, and a connecting plate having a rectangular nail fixing hole in which a nail is inserted into and fixed to one end of the central portion; Soil-nailing fastening structure for the retaining wall support, characterized in that the reinforcing bar fixture for fixing the main reinforcing bars inserted into the reinforcing bar fixing hole is provided. The method of claim 1, An inclined surface is formed such that one side is in contact with one surface of the connecting plate, and the other side is perpendicular to the insertion angle of the nail, and an inclined washer having an inclined hole into which the nail is inserted is provided at the center, and the connecting plate and the inclined washer. Soil-nailing fastening structure for retaining wall support, characterized in that the nail fixture is provided for fixing the nail penetrated through. The method of claim 2, wherein the nail fixture, A semi-circular metal material is formed on the inner circumferential surface is formed with a fixed jaw is inserted into the projection formed on the outer circumferential surface of the nail, a pair of nail pressing portion formed with a male screw portion on the outer circumferential surface, Soil-nailing fastening structure for retaining wall support, characterized in that consisting of a nail fixing nut screwed to the male screw. The method of claim 1, wherein the reinforcing bar fixture, A semi-circular metal material is formed on the inner circumferential surface of the fixing jaw is inserted into the projection formed on the outer circumferential surface of the main reinforcing bar, a pair of fixed pressure portion formed with a male screw portion on the outer circumferential surface, Soil-nailing fastening structure for the retaining wall support, characterized in that consisting of a fixing nut screwed to the male screw. The method of claim 1, A pair of reinforcing bars is provided between the connecting plate and the main reinforcing bar, and a fixing jaw is formed at the end of each reinforcing bar with a projection formed on the outer circumferential surface of each reinforcing bar on the inner circumferential surface of a semicircular metal material, and a male screw part is formed on the outer circumferential surface. Soil-nailing fastening structure for the retaining wall support, characterized in that the pressing portion is provided, is connected by a coupling rod that is formed on both sides of the female screw portion corresponding to the male screw portion.

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