KR19980076415A - Geo-Anchor Pile and Construction Method - Google Patents

Abstract

The present invention relates to an underground anchor pile embedded in the ground and a construction method thereof; In order to use the deformed steel bar used in the construction of the structure as a buried steel bar, and to allow the end of the buried steel bar to directly reach the end of the ground directly, so that it can play a structural role as a support pile as well as a friction pile. ; The construction of the technology to the outer circumferential surface in a predetermined shape at regular intervals so that the reinforcing ribs 11 are integrally protruding reinforcing bar 10, and the outer side of the embedded iron bar 10 to be coupled to both sides It consists of a pair of fixing hardware (20) having a semi-cylindrical inner cross-sectional shape, and fixing nuts (30) for fixing the fixing hardware (20) to the buried steel bars, in the construction site Each member is assembled to make an underground anchor pile, and the pile hole p is formed to a predetermined depth, and then the underground anchor pile having the grout hose h mounted on its side is inserted into the pile hole p. And, by injecting grout into the pile hole p through the grout hose h, and completing the method of fixing the pressure plate b after the injected grout has cured; It is to increase the stability and frictional support of rock and soil during the construction of various structures.

Description

Geo-Anchor Pile and Construction Method

1A is a front view of an embedded bar according to the present invention.

1B is a cross-sectional view taken along the line I-I of FIG. 1A.

Figure 2A is a perspective view of the fixing fixture according to the present invention.

2B is an inner front view of the fixing fixture of FIG. 2A;

Figure 2C is a plan view of the fixing fixture of Figure 2A.

Figure 2D is a cross-sectional excerpt of the combined state of the embedded bar and the fixing steel according to the present invention.

3A is a perspective view of a fixing nut according to the present invention.

Figure 3B is a longitudinal sectional view of the fixing nut of Figure 3A.

Figure 4 is a cross-sectional view illustrating a state in which two buried iron bar is connected in accordance with the present invention.

Figure 5 is an exploded perspective view of an example in which the secondary fixing hardware according to the present invention is coupled to the buried iron bar.

Figure 6 is an exploded perspective view of an example of the lower cap coupled to the buried iron bar according to the present invention.

7A to 7E is an exemplary view of a method for constructing underground anchor piles according to the present invention.

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

10: buried steel bar 11: reinforcing rib 12: side groove

20: fixing hardware 21: rib groove 22: fixing protrusion

23: Fixing screw part 24: Extruded 30: Fixing nut

33: Female thread groove 40: Adjustment adjustment hardware 41: Mounting hole

42: protrusion hardware 43: protrusion screw 50: lower cap

55: groove d: deformed steel h: grout hose

p: file hole b: pressure plate

[Industrial use]

The present invention provides an underground anchor pile and a method of construction for efficiently increasing the buried depth or friction support of buried steel bars buried in the ground economically and easily to increase the restraint or pile bearing capacity against rock and soil collapse It is about.

[Private Technology]

Various kinds of underground anchor pile methods have been known and used in the related art for the stability of rock and soil and for increasing frictional support during construction of various structures.

These conventional underground anchor pile methods have been known and used by such names as Soil railing method, Rock Bolt method, NATM method, Earth anchor method, Rock Anchor method. These conventional methods have their own effects on the stability of the rock and soil unstable during construction of various structures, or increase in frictional support.

[Problems with Prior Art]

However, in the conventional methods, first, since the use of the special buried steel bars specially manufactured to implement the methods, there was a defect that the manufacturing cost of the buried steel bars increases, and the overall construction cost thereby; Second, since the buried depth is determined according to the length limit of the buried steel bar, the end part cannot be supported until the solid ground end, so it can only play a role as a friction pile but cannot expect a role as a support pile.

[Purpose of invention]

An object of the present invention is to provide an underground anchor pile and its construction method that can reduce the cost required for the separate production of embedded steel bars by using the deformed steel bar widely used in the construction of the structure as a buried steel bar. .

Another object of the present invention is to provide a underground anchor pile and its construction method so that the buried steel bar can be used freely and subsequently so that the end portion directly touches the end of the ground so as to serve not only as a friction pile, but also a structural role as a support pile. To provide.

[Configuration of Invention]

Hereinafter, the technical configuration of the present invention in detail.

The underground anchor pile of the present invention includes a buried iron bar 10 having a shape of a deformed reinforcing bar in which the reinforcing ribs 11 are integrally protruded at predetermined intervals in a predetermined shape on its outer circumferential surface; A pair of fixing steels 20 having a semi-cylindrical inner cross-sectional shape so as to be coupled to both sides from the outer surface of the embedded iron bar 10; It consists of fixing nuts (30) for fixing the fixing steel 20 to the buried iron bars. The fixing steel 20 has rib grooves 21 in which the reinforcing ribs 11 are accommodated, and fixing screws 23 are formed at upper and lower ends thereof, and fixing nuts 30 are formed on the inner surface thereof. ) Have a technical configuration in which an internal thread groove 33 screwed with the fixing screw portion 23 is formed on an inner surface thereof.

The underground anchor pile of the present invention constituted as described above has the advantage that, firstly, since the use of a deformed steel bar widely distributed in the market as the embedded steel bar 10, there is no additional cost for the production of the embedded steel bar, and second, the semi-cylindrical shape. Since the pair of fixing steels 20 having an inner cross-sectional shape of the fixing steels 20 are fixed as the fixing nuts 30 and fixed to the outer surface of the embedded steel bar 10, the installer may fix the fixing steel at any position of the embedded steel bar 10. 20) has the advantage that can be freely installed, and third, by using the deformed reinforcement bars using the fixing hardware 20 and the fixing nut 30 can be easily used to increase the overall length of the buried steel bar (10) at the construction site Has an advantage.

Hereinafter, the present invention will be described in more detail with reference to the following examples.

Embodiments of the present invention shown in Figures 1A to 6 also has a buried steel bar 10 having a shape of a deformed reinforcing bar in which the reinforcing ribs 11 are integrally protruded at regular intervals in a predetermined shape on the outer peripheral surface thereof, and the buried A pair of fixing steels 20 having a semi-cylindrical inner cross-sectional shape so as to be coupled to both sides from the outer surface of the iron bar 10, and fixing nuts 30 for fixing the fixing steel 20 to the buried iron bars Consisting of; The fixing steel 20 has rib grooves 21 in which the reinforcing ribs 11 are accommodated, and fixing screws 23 are formed at upper and lower ends thereof, and fixing nuts 30 are formed on the inner surface thereof. ) Is to implement the basic technical concept of the present invention in that it includes a technical configuration having a female screw groove 33 screwed to the fixing screw portion 23 on its inner surface.

In the present embodiment, the buried iron bar 10, as shown in Figure 1A, 1B, side grooves 12 are formed in the longitudinal direction on both sides of the outer surface, reinforcing ribs 11 in the circumferential direction at regular intervals It has a protruding shape.

The pair of fixing fixtures 20 has an internal shape in which an inner surface thereof is unevenly coupled to the reinforcing rib 11 of the buried iron rod 10, as shown in FIGS. 2A, 2B, 2C, and 2D. Fixing protrusions 22 that are unevenly coupled to the side recesses 12 of the buried iron bar 10 are integrally formed. In addition, fixing screws 23 are formed on the outer surface of the upper end and the lower end.

The embedded steel bar shown above is just one example, and the shape of the embedded steel bar of the present invention is not limited to the above example. That is, the buried steel bar 10 in the present invention may be used for the deformed reinforcing bars having a variety of different shapes in the market. What is important is that the inner surface of the fixing hardware 20 has a shape that is unevenly coupled with the outer surface of the reinforcing rib 11 of the deformed steel bar to be used as a buried iron bar.

Protruding humps 24 are integrally formed on the outer surface of the fixing hardware 20 as shown in FIG. 2A. The protrusion hump 24 serves to increase the anchorage support force in the ground after the anchor anchor pile of the present invention is fixed in the ground. As shown in FIG. 2C, the protrusion hump 24 in the present embodiment has a plurality of protrusions protruded at predetermined intervals in the longitudinal direction of the buried steel bar, while allowing the grout hose to be easily attached between the outer surfaces thereof. This is to increase the support capacity of the settlement.

The fixing nut 30 has an internal cross section which is screwed to the fixing screw 23 as shown in Figs. 3A and 3B. The fixing nut 30 is screwed to the fixing screw portion 23 formed on the outer surface of the upper end and the lower end of the fixing hardware 20, thereby fixing the fixing hardware 20 to the outer surface of the embedded steel rod (10). Perform.

If you want to use the interconnection between the buried steel bars long, as shown in Figure 4, one of the buried steel bar and the other part of the buried steel bar covering the fixing steel 20, one fixing nut 30 is one In the embedded steel bar 10, the other fixing nut 30 can be firmly connected to the two embedded steel bars by fixing to the other embedded steel bar.

Meanwhile, as shown in FIG. 5, the inner surface of the buried iron bar 10 has an inner cross-sectional shape that is unevenly coupled with the outer surface of the buried iron bar 10, and the outer surface of the buried iron bar 10 includes a pair of protruding screw parts 43. Auxiliary fixing hardware (40) consisting of attachment holes (41) and a protruding hardware (42) screwed to the protruding screw portion (43) of the attachment holes (41) is attached and fixed, further fixing the supporting force of the buried steel bar It may also play a role in improving.

In addition, as shown in Figure 6, the lower end of the buried iron bar 10, the lower end has a pointed shape, the groove portion 55 is formed in the upper center portion is fixed to the lower cap 50 to be fitted to the embedded iron bar It is desirable to be. The lower cap 50 serves to help the end of the buried iron bar is directly contacted and supported by the ground.

The underground anchor pile thus constructed is used in the following manner, as shown in Figs. 7A to 7E.

First, to build the underground anchor pile of the present invention by assembling the deformed bars (d) and other parts at the construction site;

Secondly, through the boring process, the pile hole p is formed to a predetermined depth;

Thirdly, the underground anchor pile of the present invention having the grout hose h mounted on its side is inserted into the pile hole p by the required depth;

Fourth, grout is injected into the pile hole p through the grout hose h;

Fifth, after the injected grout is cured, the pressure plate (b) is fixed to complete the construction of the underground anchor pile.

[Effects of the Invention]

The underground anchor pile of the present invention constructed and constructed as described above does not require any extra cost for the production of the embedded steel bar, and the installer can freely install the fixing steel at any position of the embedded steel bar, and constructs the entire length of the embedded steel bar. It is very useful to easily stretch and use in the field.

Claims (7)

A semi-cylindrical inner cross-section so that the reinforcing ribs 11 have a shape of a deformed reinforcing bar in which the reinforcing ribs 11 are integrally protruded at predetermined intervals in a predetermined shape on the outer circumferential surface, and are coupled to both sides from the outer surface of the buried iron bar 10. A pair of fixing steels 20 having a shape and fixing nuts 30 for fixing the fixing steels 20 to the buried steel bars; The fixing steel 20 has rib grooves 21 in which the reinforcing ribs 11 are accommodated, and fixing screws 23 are formed at upper and lower ends thereof, and fixing nuts 30 are formed on the inner surface thereof. ) The underground anchor pile, characterized in that the female screw groove 33 is screwed to the fixing screw portion 23 is formed on the inner surface. According to claim 1, The buried iron bar 10 is an underground anchor pile, characterized in that the side grooves 12 are formed in the longitudinal direction on the outer side of the outer surface, the reinforcing ribs 11 protrude at regular intervals in the circumferential direction . According to claim 1, wherein the pair of fixing steel (20) has an inner shape of the inner surface is unevenly coupled to the reinforcing ribs 11 of the embedded steel bar 10, side grooves of the embedded steel bar (10) 12. An underground anchor pile, characterized in that the fixing projections 22 which are unevenly coupled to 12 are formed integrally. The underground anchor pile of claim 1, wherein a plurality of protruding humps (24) are integrally formed on the outer surface of the fixing hardware (20) at predetermined intervals in the longitudinal direction. According to claim 1, wherein the outer surface of the buried iron bar 10 has an inner cross-sectional shape that is coupled to the outer surface of the buried iron bar 10, the outer surface is a pair of attachment holes in which the protruding screw portion 43 is formed (41) and the auxiliary anchoring hardware (40) consisting of a fixing fixture (42) screwed to the protruding screw portion (43) of the attachment holes (41), characterized in that the anchor anchor pile. The lower end of the buried iron bar 10 has a pointed shape, the lower end portion 50 is formed in the upper center portion is formed in the groove portion 44 is characterized in that the lower cap 50 is fitted to the embedded iron bar is fixed. Underground anchor file. At the construction site, the underground anchor piles are fabricated by assembling the deformed bars (d) and other parts, and through the boring process, the pile holes (p) are formed to a predetermined depth, and the grout hose (h) is mounted on the side. The underground anchor pile is inserted into the pile hole p to the required depth, and the grout is injected into the pile hole p through the grout hose h. After the injected grout is cured, the pressure plate b Construction method of underground anchor pile, characterized in that the construction by fixing).