KR100796528B1 - Multipurpose nailing anchor - Google Patents

Abstract

A multipurpose nailing anchor is provided to increase the pullout resistance of a nail and the shear resistance of the ground by a nail by locating a nail to the center of a perforated hole, and to have a space adjusting function and a nail fixing function for locating a nail to the center of a perforated hole using a space adjustment support. A multipurpose nailing anchor used for a nailing method for slope stabilization includes a space adjustment support(30) inserted to a nail(20) having a male thread at the outer circumferential surface to make the nail located in the center of a perforated hole of the ground without eccentricity and equipped with a nut coupled with each nail, a ring having the inside diameter enough to move smoothly, a fixing member attached to the side where the nut and the ring face each other to hinge on one end of an arm member whose another end is hinged on the other end of another arm member to be folded or unfolded correspondingly to the inside diameter of the perforated hole, and a ring attachment nut formed on the side of the ring to couple a full thread bolt(40) to be parallel to the longitudinal direction of the nail, so that many space adjustment supports are unified to be folded or unfolded simultaneously.

Description

Multipurpose Nailing Anchor {MULTIPURPOSE NAILING ANCHOR}

1 is an exploded perspective view of a multi-purpose nailing anchor in accordance with the present invention.

2 is a combined perspective view of the multi-purpose nailing anchor in accordance with the present invention.

FIG. 3 is an enlarged perspective view of the spacing adjuster shown in FIG. 1. FIG.

Figure 4 is an installation process after insertion into the drilling hole of the multi-purpose nailing anchor in accordance with the present invention.

5 is an exploded perspective view showing another embodiment of the multi-purpose nailing anchor according to the present invention.

6 is a perspective view of the combination of FIG.

FIG. 7 is an enlarged perspective view of the spacing adjuster shown in FIG. 5; FIG.

Explanation of symbols on the main parts of the drawings

10: nailing anchor 20: nail

30: spacing support 31: nut

32: ring 33: holding member

34: arm member 35: ring attachment nut

36: upper ring 37: lower ring

38: Bolt 39: Fixing bolt insertion hole

40: computer bolt 41,42: computer bolt insertion hole

50: pressure nut 60: stopper

70: grouting 80: front panel

90: shotcrete

The present invention relates to a multi-purpose nailing anchor, and more particularly, by placing the nail in the center of the drilling hole to sufficiently increase the pull resistance of the nail and the shear resistance of the ground by the nail, to a separate fixing device at the nail tip The present invention relates to a versatile nailing anchor having a spacing adjustment function that combines a spacing adjustment function for positioning a nail in the center of a drilling hole and a nail fixing function.

In general, as a countermeasure to prevent the occurrence of slope destruction, it can be divided into two methods, a safety factor maintenance method and a safety factor increase method. That is, the former method, which is a passive countermeasure that protects slopes from direct factors that cause slope failure by preventing the slope's safety factor from decreasing due to the influence of water such as rainfall and snow, etc. The latter is an active measure to increase the resistance and improve the potential vulnerability of slope destruction.

The nailing ball, which is one of the methods of increasing the safety factor, is a method for drilling the required depth in the horizontally downward direction from the cut surface, inserting reinforcing bars, filling with cement grouting, and integrating reinforced ground to resist working earth pressure. In detail, first of all, survey the surrounding underground facilities, buildings, etc., and then select the drilling equipment suitable for the design conditions, and drill the nail, but place the nail in the center of the drilling hole, and after the nail is inserted, the drilling hole is completely filled. Inject grouting, which acts as a medium for transferring force between the surrounding ground and the nail.After the curing period of the grouting, the plate and the wire mesh, which are the front plates, are bonded to reinforce the surface and join the nailing head and the front shotcrete wall. It will be installed and shotcrete will be placed on the surface.

However, in the nailing method as described above, the nail is not located in the center with respect to the entire length of the drilled hole, but is embedded in the drilled hole in a state biased downward, so that the shear resistance of the ground applied in the design cannot be obtained. There is a problem inevitably reduce the pull resistance of the nail, which can be said to be a measure of stability.

In order to solve this problem, the existing nailing method uses a spacer which is deformed to fit the boring diameter or welded by reinforcing steel bars so that the nail is located at the center of the drilling hole when the nail is inserted. A separate fixing device was attached to fix the center of the hole at the end of the hole, and the method of placing the nail in the center was used. However, since the spacer corresponding to the diameter of the hole is already attached since the insertion of the nail, the diameter of the hole is If this is not maintained, the spacer may be deformed or the nail may be difficult to insert. Even if the nail is fixed to the end of the hole, it is not easy to prevent the occurrence of eccentricity due to the sag of the nail. This may result in a space where cement grouting is not filled.

On the other hand, Patent Application No. 2007-49262 filed by the applicant of the present application is derived from the recognition of the problem of the conventional nail, the present application adds another embodiment to the present invention.

The present invention has been made to solve the above problems, an object of the present invention is to place the nail in the center of the drilling hole to sufficiently increase the pull resistance of the nail and the shear resistance of the ground by the nail, The present invention provides a versatile nailing anchor having a spacing adjustment function that combines a spacing adjustment function and a nail fixing function to position the nail in the center of a hole, rather than a simple fixation by a separate fixing device.

Another object of the present invention, even if the diameter of the drilling hole is not maintained perfectly uniformly in the longitudinal direction is possible to insert in the state in which the gap adjustment support is deployed, the additional stop of the unevenness of the inner surface of the drilling hole is simple and easy to use construction To provide a nailing anchor.

In order to achieve the above object, the present invention is a fixed number of fixed on the opposite side of the nut and the ring at both ends so that the nail is located in the center in the drill hole in the male thread is formed on the outer periphery A member is attached and hinged to one end of the arm member, and the other end of the arm member is hinged to the other end of the other arm member so that a predetermined number of interval-adjustable supports that can be folded or unfolded correspond to the inner diameter of the drilling hole are fitted. As a basic feature of the technical construction, a coupling bolt is formed on the ring side of the spacer to be parallel to the lengthwise direction of the nail so that the spacer is integrated with a computer bolt to be folded or unfolded at the same time. do.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention configured as described above are as follows.

1 is an exploded perspective view of a multi-purpose nailing anchor according to the present invention, Figure 2 is a perspective view of a combined nailing anchor of the multi-purpose nailing anchor according to the present invention, Figure 3 is an enlarged perspective view of the spacing adjuster shown in FIG.

As shown in Figures 1 to 3, when looking at the structure of the present invention multi-purpose nailing anchor, a male thread of a predetermined length on the outer periphery of the nail 20, which is inserted into the drilling hole to finally bear the resistance of the nail structure It is formed, the nail 20 is preferably using a deformed reinforcing steel or steel pipe or polymer resin.

The nail 20 is fitted with a predetermined number of interval adjusting support 30 which serves to position the nail 20 in the ground without having an eccentricity in the ground drilling hole, both ends of the interval adjustment support 30 Each of the nut 31 and the nail 20 to be screwed with the nail 20 and the ring 32 having an inner diameter that is smooth enough to move during the fitting is provided, respectively, the nut 31 and A fixed number of fixing members 33 are attached and fixed to one side of the ring 32 facing each other, hinged to one end of the arm member 34, and the other end of the arm member 34 is connected to the other end of the other arm member 34. It is hinged and can be folded or unfolded to correspond to the inner diameter of the drilled hole.

On the other hand, a predetermined number of ring attachment nuts 35 are formed on the side of the ring 32 of the spacing adjustment support 30, which is a computer bolt having a predetermined length in consideration of the depth of the drilling hole in the ring attachment nut 35. 40 is coupled to be parallel to the longitudinal direction of the nail 20, the plurality of spacing adjuster 30 is to be integrated to be folded or unfolded at the same time.

Here, the gap adjusting support 30 also serves to fix the nail 20 by supporting the inner circumferential surface of the drilling hole, so that the material is preferably made of steel in order to have sufficient strength as a supporting member, and the threaded rod 40 Instead, it is possible to use a rod-shaped mechanism that can be joined to the ring 32, but since the computer bolt 40 and the nut 35 are standardized and produced as a construction and civil engineering material, the use of the nailing anchor 10 of the present invention is used. It is preferable for easy fabrication. When the connection between the threaded bolts 40 is required, the ends are welded to each other or a connecting nut (not shown) is used, and the ring attachment nut 35 is also welded to the ring 32 when welding. It is preferable to.

In addition, the engagement direction of the spacing adjustment support 30 to the nail 20 is coupled to the nut 31 of the spacing adjustment support 30 so that the nut 31 of the spacing adjustment support 30 can be located in the inner side of the drilling hole, the ring of the rearmost spacing adjustment support 30. 32 should be exposed near the inlet of the drill hole, and a stopper 60 may be provided at the end of the nail 20 to be the limit reaching position of the nut 31.

In addition, Figure 5 is an exploded perspective view showing another embodiment of the multi-purpose nailing anchor according to the present invention, Figure 6 is a combined perspective view of Figure 5, Figure 7 is an enlarged perspective view of the spacing adjuster shown in Figure 5, As shown, the ring 32 and the ring attachment nut 35 are integrally formed at both ends of the interval adjusting support 30, and the computer bolts 40 having a predetermined length in consideration of the depth of the drilling hole are provided on the left and right sides. Upper and lower rings 36, which are formed with computerized bolt insertion holes 41 and 42, which are coupled to be parallel to the longitudinal direction of the nail 20 so that a plurality of spacing adjusting supports 30 can be integrated and folded or unfolded at the same time. , 37 is provided, the lower ring 37 has a fixed bolt insertion hole 39 is inserted into the side for inserting a bolt 38 for fixing the spacer 30 to the nail 20, On the opposite side of the upper and lower rings (36, 37) In the same manner as in the previous embodiment, a certain number of fixing members 33 are attached and fixed and hinged to one end of the arm member 34, and the other end of the arm member 34 is hinged to the other end of the other arm member 34. The folding and unfolding can be made to correspond to the inner diameter of the drilled hole.

The inner bolt insertion holes 42 of the upper and lower rings 36 and 37 and the lower ring 37 correspond to the diameters of the nail 20 and the threaded bolt 40 while the inner diameter is smooth enough to move during fitting. It should have, and the computerized bolt insertion hole 41 of the upper ring 36 is fixed by screwed or welded with the computerized bolt (40).

The number of the interval adjusting support 30 should be determined in consideration of the length of the nail 20 is inserted into the drilling hole while the nail 20 is located in the center of the drilling hole without sagging in the ground drilling hole.

Referring to the operation through the installation process of the present invention multi-purpose nailing anchor 10 as follows.

Figure 4 is an installation process after insertion into the drilling hole of the multi-use nailing anchor according to the present invention, as shown in the first, carefully perforated not to be severely disturbed flow or ground of the surrounding facilities, as shown above 30 is inserted into the nail 20 is coupled to the plurality of computer bolts 40, the rearmost interval adjustment support 30 coupled to the nail 20 can be exposed near the inlet of the perforation hole of the ground Should be

On the other hand, the arm member 34 of the gap adjusting support 30 should be deployed at the time of insertion so that the nail 20 can be easily inserted into the drilling hole, and corrosion of the nail steel may affect the stability of the structure in the future. If there is concern, corrosion thickness should be taken into account when designing or designing coated or rust-treated steel.

Next, the pressure nut 50 is additionally screwed into the nail 20 so as to be in close contact with the ring 32 or the upper ring 36 of the rearmost spacer support 30 at the entrance of the punching hole. Rotating the pressurizing nut 50, the threaded rod 40 fixed to the ring 32 or the upper ring 36 is pressed by the ring 32 or the upper ring 36 of the rearmost rearward adjusting support 30. As the ring 32 or the upper ring 36 of the other interval adjustment support 30, which is integrated by the front, is pushed in at the same time, the arm members 34 of the plurality of interval adjustment support 30 are folded.

Here, since the nut 31 or the lower ring 37 of each of the plurality of spacing adjusters 30 is screwed to the nail 20 or fixed by tightening of the bolt 38, a female thread line is formed during pressing. Only the upper ring 36, which is not secured by the ring 32 or the bolt 38, which is not provided, can be moved forward, and the arm member 34 of each of the spacers 30 is folded by the same length so that the nail 20 ) Will not only be located in the center of the drilling hole but also serves as a support member for fixing the nail 20.

Next, grout the cement milk to the inside of the drilled hole without pressure, and if the casing is installed to maintain the drilled hole, the casing should be removed while preventing the hollow wall from collapse before the grouting 70 is completely hardened.

The grouting 70 should be completely filled inside the drilling hole, and should be carried out several times depending on the tendency of the grouting material to penetrate the surrounding ground, and at least two injection hoses (not shown) should be installed. The end of the hose should be positioned at the bottom of the drilled hole, and another hose should be placed at the position of about 3/4 of the length of the drilled hole at the entrance of the drilled hole. This takes at least a week so that no tension or impact is applied to the nail 20 within this period.

Next, for fixing the nail 20 to the wall of shotcrete 90 and fixing the ground, the plate, which is the front plate 80, is fixed by bolting to the nail 20 head, and the nail front plate 80 And the front shotcrete 90 is placed on the site using a wire mesh (not shown) to reinforce the surface, and then shotcrete 90 on the front.

While specific preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and a person skilled in the art to which the present invention pertains has the technical gist of the present invention. Various changes can be made without departing.

As described above, the present invention, the multi-purpose nailing anchor is to place the nail in the center of the drilling hole to sufficiently increase the pull resistance of the nail and the shear resistance of the ground by the nail, simply by a separate fixing device at the tip of the nail The spacing support, not fixed, serves as a spacing adjustment function to position the nail in the center of the drilling hole and the fixing function of the nail. Even if the diameter of the hole is not perfectly uniform in the longitudinal direction, the spacing support is developed and combined. It is possible to insert in, so the additional stop of the unevenness of the inner surface of the drilling hole is not necessary, the construction is simple and easy effect.

Claims (4)

In the nailing anchor used in the nailing method of the slope stabilization method, A fixed number of fixings are provided on the opposite side of the nut 31 and the ring 32 at both ends so that the nail 20 is located at the center in the drill hole in the nail 20 having the male thread formed on the outer circumference. The member 33 is attached and hinged to one end of the arm member 34 and the other end of the arm member 34 is hinged to the other end of the other arm member 34 so that it can be folded or developed to correspond to the inner diameter of the drilled hole. The spacing adjustment support 30 is fitted in a certain number, and coupled to the ring attachment nut 35 formed on the ring 32 side of the spacing support 30 to be parallel to the longitudinal direction of the nail (20) to the The spacing adjustment support 30 is integrally coupled to the computerized bolt 40 to allow folding and unfolding at the same time, the predetermined number of spacing adjustment support 30 and the computerized bolt 40 are integrally coupled to the nail ( Close to the ring 32 of the rearmost spacing support 30 of 20). Versatile nailing anchor, characterized in that the pressing nut 50 is coupled to. delete The method of claim 1, Multi-purpose nailing anchor, characterized in that the end of the nail 20 is further configured with a stopper (60) which is the limit reaching position of the nut (31) of the spacing adjustment support (30). In the nailing anchor used in the nailing method of the slope stabilization method, Inserting a fixing bolt into which a bolt 38 for fixing to the nail 20 is inserted in order to position the nail 20 at the center in the drilling hole on the nail 20 having a male thread formed on the outer circumference. A predetermined number of fixing members 33 are attached to one side of the lower ring 37 and the upper ring 36 in which the ball 39 is formed at the side thereof and is hinged to one end of the arm member 34. The other end of the member 34 is hinged and coupled to the other end of the other arm member 34, the interval adjustment support 30, which can be folded or unfolded to correspond to the inner diameter of the drilling hole is fitted a certain number of fitting, the spacing adjustment support 30 The spacing adjustment support 30 is integrally coupled to the threaded screw insertion holes 41 and 42 formed on the left and right sides of the upper and lower rings 36 and 37 so as to be parallel to the lengthwise direction of the nail 20. Computing bolt 40 is coupled to enable deployment, the predetermined number of The pressurizing nut 50 is coupled so that the gap adjusting support 30 and the computer bolt 40 are integrally coupled to the upper ring 36 of the rearmost gap adjusting support 30 of the nail 20. A versatile nailing anchor.

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