JP2011256663A - Signpost connecting foundation construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a signpost connecting foundation construction method executable in a small space, with generation of very little surplus soil, by an extremely simple work, in a short period, and at low cost.SOLUTION: In constructing a foundation B for connecting a signpost thereon, a vertical hole 10 is constructed by excavating ground G by an excavation device 8. Then, in the vertical hole 10, cement blended soil 12 is produced by mixing an excavated soil and water containing cement. Next, an anchor pile 1, which has tabular pull-out prevention bodies 4, 4.. attached on an outer surface of a pile body 2 in a radial pattern along an axial direction, is placed in the cement blended soil 12. Lastly, the cement blended soil 12 is solidified while keeping the anchor pile 1 in place.

Description

  The present invention relates to a method for creating a foundation (foundation for connecting signs) that is formed on the ground in order to erect signs such as road signs on the roadside or the like of a road.

  As a general method for standing a road sign or the like on the side of a road, as disclosed in Patent Document 1, a ground foundation such as a substantially rectangular parallelepiped is formed by excavating the ground, and an upper surface of the foundation. In addition, a method is known in which an anchor bolt is stood up and the foundation is sufficiently cured, and then a base at the base end of a pole such as a road sign is screwed to the anchor bolt of the foundation with a double nut or the like.

JP 2001-73329 A

  However, in the conventional road sign standing method described above, after excavating the ground into a rectangular parallelepiped shape, etc., a concrete is struck to create a foundation, and a pedestal for connecting with a road sign pole must be built in the foundation. Therefore, there is a problem that a long construction period is required and a lot of residual soil is generated by excavation of the ground.

  The object of the present invention is to solve the problems of the conventional road sign standing method, and to connect signs at a low cost within a short time by a very easy operation without generating almost any residual soil in a small space. It is an object of the present invention to provide a method for constructing a foundation for linking signs, which can create a foundation for use.

  Among the present inventions, the invention described in claim 1 is a construction method for creating a foundation in the ground for connection with a pillar of signs such as street lamps and road signs, and the vertical hole is excavated in the ground. In the vertical hole, the excavated current soil and cement-containing water are mixed to produce a cement-mixed soil. The cement-mixed soil has a flat plate shape from the outer periphery of the long cylindrical pile body. After the anchor pile formed by projecting the pull-out preventing body radially along the axial direction is set up, the cement mixed soil is solidified together with the anchor pile. The signs referred to in the present invention are not limited to street lights, curve mirrors, and road signs, but also include soundproof walls and safety fences. In the creation method according to the present invention, a drilling machine, an excavator such as an auger, a columnar improvement machine, or the like can be suitably used for drilling a vertical hole. In some cases, drilling of a vertical hole by an operator's hand is also possible. Is possible.

  The invention described in claim 2 is the invention described in claim 1, wherein the anchor pile is fixed to the upper end of the pile body so that the substrate forms a certain angle with respect to the axial direction. It is characterized by this.

  According to the method for constructing a foundation for connecting signs according to claim 1, after excavating a vertical hole, the present soil and cement-containing water are mixed in the vertical hole to produce cement mixed soil, and then the cement mixing is performed. In a short hole filled with soil, the anchor pile that can be connected to the signs is set up (set down), and the foundation for connecting the signs is built in a short time at a low cost. be able to. Also, the anchor pile pull-out prevention body set up in the ground increases the surface friction with the ground, so that the anchor pile can be firmly fixed in the cement-mixed soil, so it is connected to the anchor pile. When the signs are subjected to a strong wind or an impact, the situation where the anchor pile is pulled out of the ground or the situation where the anchor pile rotates can be prevented with high accuracy.

  According to the method for constructing a foundation for connecting signs according to claim 2, since the base end of a pole such as a road sign can be screwed using the substrate fixed to the upper end of the anchor pile, it is shorter. Road signs and the like can be easily set up in time. In addition, it is possible to install the substrate so that the substrate faces in the desired direction by using gravity simply by setting the anchor pile in the vertical hole filled with cement-mixed soil (for example, the substrate is oriented in the axial direction). When anchor piles fixed so as to be orthogonal to each other are used, it is possible to install the piles so that the substrate faces in the horizontal direction by simply standing the anchor piles in the vertical holes. In addition, by rotating the substrate around the main axis of the anchor pile while the cement-mixed soil in the vertical hole is not solidified, fine adjustment is made so that the standing road signs and the like are oriented in the correct direction and at the correct angle. Therefore, it is possible to construct a foundation for linking labels very easily in a very short time.

It is a front view of an anchor pile. It is a top view of an anchor pile. It is a perspective view of an anchor pile. It is explanatory drawing which shows the creation method of the foundation | substrate for signs connection. It is explanatory drawing which shows the creation method of the foundation | substrate for signs connection. It is explanatory drawing which shows the state which erected signs using the foundation for signs connection. It is explanatory drawing which shows the example of a change of an anchor pile. It is explanatory drawing which shows the example of a change of the creation method of the foundation | substrate for signs connection.

[Structure of anchor pile]
Hereinafter, a method for creating a foundation for connecting signs according to the present invention will be described in detail with reference to the drawings. 1 to 3 show an anchor pile used in the method for constructing a foundation for connecting signs according to the present invention. The anchor pile 1 includes a substrate 3 and pull-out prevention bodies 4, 4. It is formed by adhering (welding).

  The pile body 2 is formed in a columnar shape having an outer diameter of 114.3 mm and a length (height) of 3,000 mm, using steel having a thickness of 4.5 mm. The substrate 3 is formed in a square shape of length × width = 600 mm × 600 mm by cutting a steel plate having a thickness of 12.0 mm. A circular pile insertion hole 5 having a diameter of 115.0 mm is formed in the center, and bolt insertion holes 6, 6... Are formed at the four corners, respectively. On the other hand, each drawing prevention body 4,... Is formed in a rectangular shape of length × width = 192 mm × 400 mm by cutting a steel plate having a thickness of 6.0 mm.

  And the board | substrate 3 is welded so that it may orthogonally cross with the axial direction of the pile main body 2 at the upper end of the pile main body 2, and the extraction prevention bodies 4,4. However, it is welded so that the plate surface direction is the same as the axial direction of the pile body 2. And the drawing-out prevention bodies 4, 4... Project radially from the outer periphery of the pile body 2. It should be noted that the pull-out prevention bodies 4, 4... Are adjacent to each other at an angle of 90 °. Moreover, the length from the lower end of each extraction prevention body 4,4 .. to the lower end of the pile main body 2 is adjusted so that it may be set to about 300 mm. In addition, the anchor pile 1 has the pile body 2 fixed to the center of the square substrate 3 as described above, and the pull-out prevention bodies 4, 4. The center of gravity is located on the axis of the pile main body 2 because it is provided at equal intervals in the direction of the movement.

[How to create a foundation for connecting signs]
An example of a method for constructing a sign connecting base using the anchor pile 1 will be described with reference to FIGS. 4 and 5. When the anchor pile 1 is installed in the ground G, the excavating machine 7 and a plant vehicle (not shown) are carried into the construction site, and the lot 9 with the excavating device (auger) 8 attached to the tip is attached to the excavating machine 7. Attach and set the excavator 8 at a position where a foundation for connecting signs is desired.

Then, the excavator 8 attached to the lot 9 is pushed to the surface of the ground G, and cement slurry supplied by the plant car (mixture of cement and water; addition amount of cement solidifying material = 150 kg / m ³ , cement The ground G is excavated by rotating the lot 9 while jetting the weight ratio of water with respect to water = 100% from the cutting edge of the excavator 8, and has a predetermined size (for example, a diameter of about 500 mmφ and a depth of about 3,000 mm). ) Vertical vertical holes 10 are formed. In addition, since the ground 9 excavates the ground G in the state of being guided to the leader 11, the lot 9 is formed with the vertical hole 10 which is accurately oriented in the vertical direction. By excavating the vertical hole 10 in such a manner, the inside of the vertical hole 10 is filled with cement mixed soil (before solidification) 12 formed by uniformly mixing cement slurry and soil (see FIG. 4). . Then, after excavating the vertical hole 10 to a predetermined depth, the excavator 8 is pulled up from the cement-mixed soil 12.

  As described above, after excavating the vertical hole 10, the tip end side of the anchor pile 1 is thrust into the approximate center of the unsolidified cement mixed soil 12 inside, and the anchor pile 1 is pushed vertically to a sufficient depth (standing). Included). As such, when the anchor pile 1 is stood up, the portion of the substrate 3 at the periphery is positioned above the periphery of the vertical hole 10. The anchor pile 1 standing in the vertical hole 10 is inserted in advance into the bolt insertion holes 6, 6... Of the board 3 by bolts 13, 13. .. Are fixed to the substrate 3 (see FIG. 5).

  After raising the anchor pile 1 until the tip reaches the bottom of the vertical hole 10, the cement mixed soil 12 is cured and solidified over a sufficient time, and the anchor pile 1 is fixed by the solidified cement mixed soil 12. Complete the creation of the foundation B for linking signs.

  FIG. 6 shows an example of standing signs using the formed foundation B for connecting signs. Fixed to the substrate 3 in a state where the substrate 3 of the anchor pile 1 in the foundation B formed in the ground G and the back surface of the base 21 provided at the base end of the pole P of the signs I are in contact with each other. The signs I can be erected by screwing the base plate 3 and the base 21 using the bolts 13, 13... And the nuts 14, 14.

[Effects of methods for creating foundations for linking signs]
In the above-described method for constructing the foundation for connecting signs, the ground G is excavated by the excavator 8 to form the vertical hole 10, and the excavated current soil and the cement-containing water are kneaded in the vertical hole 10 to mix the cement mixed soil. 12, the anchor pile 1 that can be connected to the signs I is set up in the cement-mixed soil 12, and then the cement-mixed soil is solidified together with the anchor pile 1, so that the foundation B for connecting the signs is obtained. It is to be created. Therefore, according to this creation method, the cement mixed soil 12 is generated in the vertical hole 10 simultaneously with the excavation of the vertical hole 10 and then the anchor pile 1 is set up in the vertical hole 10. It is possible to build the base B for labeling at a low cost within the time. Further, the pull-out prevention bodies 4, 4... Of the anchor pile 1 standing in the ground G can increase the friction with the ground G and can firmly fix the anchor pile 1 in the cement-mixed soil 12. Therefore, according to the above-described creation method, when the signs I connected to the anchor pile 1 are subjected to a strong wind or an impact, the situation where the anchor pile 1 is pulled out of the ground G, or the anchor pile The situation where 1 rotates can be prevented with high accuracy.

  Moreover, since the anchor pile 1 is fixed to the upper end of the pile main body 2 so that the substrate 3 is orthogonal to the axial direction, the above-described method for creating the foundation for connecting signs is according to this creation method. Since the base end of the pole P of the signs I can be screwed using the substrate 3 of the anchor pile 1, the signs I can be easily erected within a shorter time. Further, the anchor pile 1 is vertically set in the vertical hole 10 filled with the cement-mixed soil 12, so that the substrate 3 is formed at a predetermined angle (that is, 90 ° with respect to the vertical direction). In addition to the fact that the cement mixture soil 12 in the vertical hole 10 is not solidified, the substrate 3 is rotated around the main axis of the anchor pile 1 so that the signs I are erected. Since the fine adjustment can be made so as to face the correct direction, the foundation B can be formed very easily within a very short time.

[Examples of changes to the method of building foundations for connecting signs]
In addition, the structure of the method for constructing the foundation for connecting signs according to the present invention is not limited to the aspect of the above embodiment, and the material, shape, and structure of the anchor pile to be used, the method of excavating the vertical hole, etc. The configuration can be appropriately changed as necessary without departing from the spirit of the present invention.

  For example, the method for constructing the foundation for connecting signs according to the present invention is not limited to the method of setting (fixing) the anchor pile to the bottom of the excavated vertical hole as in the above embodiment, but to the middle of the excavated vertical hole. However, it is also possible to change to a method in which the anchor pile is not stood up (not settled). Further, the method for constructing the foundation for connecting signs according to the present invention is not limited to a method using an anchor pile having a large substrate that can be suspended on the periphery of the vertical hole as in the above embodiment, and the length of the longest portion It is also possible to change to a method using an anchor pile having a small substrate smaller than the diameter of the vertical hole.

  FIG. 7 shows an anchor pile having a small substrate that can be used even in a construction method in which the anchor pile is not settled. Two anchors are inserted at the base end of the pile body 2 of the anchor pile 1 ′. The holes 15 are formed so as to face each other in the diameter direction. And the sinking prevention arms (a steel pipe, a steel pillar, rod-shaped timber, etc.) 16 are inserted in those insertion holes 15 and 15, and have penetrated the pipe main body 2. When the anchor pile 1 ′ is used to construct a foundation for connecting signs, as shown in FIG. 8, when the anchor pile 1 ′ is erected in the cement-mixed soil 12 in the excavated vertical hole 10, it is prevented from sinking. Both ends of the arm 16 are positioned at the periphery of the vertical hole 10. As described above, the phenomenon that the anchor pile 1 ′ falls to the bottom of the vertical hole 10 is avoided by suspending both ends of the sinking prevention arm 16 around the peripheral edge of the vertical hole 10. It becomes possible not to stand up. In addition, when employ | adopting this method, after the cement mixing soil 12 in the vertical hole 10 solidifies, it is preferable to fill so that the board | substrate 3 and the surface of the ground G may become the same surface.

  In addition, the anchor pile used in the method for constructing the foundation for connecting signs according to the present invention is not limited to the pipe body having a circular cross section as in the above embodiment, and the pipe body is a cylinder having an oval cross section. It is also possible to change the body or the tube body to a hollow polygonal columnar body (for example, a hollow quadrangular columnar body).

  Further, the anchor pile is not limited to the one in which the four pullout prevention bodies are provided radially on the outer periphery of the pipe body as in the above embodiment, and the two pullout prevention bodies are provided symmetrically on the outer circumference of the pipe body. It is also possible to change it to one that has three or five or more pull-out prevention bodies provided radially on the outer periphery of the pipe body.

  In addition, the anchor pile is not limited to one having a pull-out prevention body formed by cutting a steel plate into a rectangular shape or the like and welded to the outer periphery of the pipe body as in the above embodiment, but is changed to one having another shape. It is also possible. For example, a pile main body in which two plates (iron plates, etc.) provided with slits are assembled perpendicularly to form a pull-out prevention member, and the pull-out prevention member is provided with four slits at equal intervals along the axial direction. In addition, concentrically incorporated (inserted into the slit of the pile body), the side part of the anti-extraction member protruding radially from the outside of the pile body functions as an anti-extraction body, and two slits along the axial direction. A rectangular plate (steel plate, etc.) is incorporated in the pile body provided symmetrically (inserted into the slit of the pile body), and the side of the plate that protrudes radially from the opposite position outside the pile body functions as a pull-out prevention body It is possible to change to something to be made.

  Furthermore, the anchor piles are not limited to those made of steel as a whole (pile main body, pull-out prevention body, substrate) as in the above embodiment, but can also be changed to parts made of cast iron or cast steel. It is. Moreover, it is also possible to apply rust prevention coating etc. to the whole or a part.

  In addition, the anchor pile is not limited to the one provided with a substrate at the base end of the pile body as in the above embodiment, and the substrate is used when the foundation to be constructed is used for standing signs without a pedestal. It is also possible to omit the configuration. Further, the anchor pile is not limited to the one in which the substrate is fixed to the pile main body before standing up to the ground as in the above embodiment, and the substrate is fixed to the pile main body after the setting up to the ground is completed. It is also possible to weld (weld).

  In addition, the anchor pile substrate is not limited to the one having a square outer shape as in the above embodiment, and can be changed to one having various outer shapes in accordance with the shape of the pedestal of the signs. is there. Further, the anchor pile substrate is not limited to the one in which the pile insertion hole is drilled as in the above embodiment, and is welded to the pile body in a state where the tip of the pile body is inserted into the pile insertion hole. It is also possible to change the back surface to one that is welded to the upper edge of the pile body or the upper edge of each plate.

  Furthermore, the anchor pile is not limited to the anchor pile which can be erected by screwing the peripheral edge of the substrate and the pedestal pedestal as in the above embodiment. It is also possible to change to those provided with a means for fixing.

  As described above, the method for constructing the foundation for connecting signs according to the present invention has excellent effects as described above. Therefore, it is preferably used as a foundation construction method for use in erecting various kinds of signs. Can do.

1, 1 '·· Anchor pile 2 ·· Pile body 3 ·· Substrate 4 ·· Pull-out prevention body 8 ·· Drilling device (auger)
10 .... Vertical hole 12 .... Cement mixed soil B ... Basic G ... Ground I ... Signs

Claims (2)

A construction method for creating a foundation in the ground for connection with a pillar of signs such as street lights and road signs,
The ground is excavated to form a vertical hole, and in that vertical hole, the excavated current soil and cement-containing water are mixed to produce a cement-mixed soil.
It is characterized by solidifying the cement-mixed soil together with the anchor pile after setting up the anchor pile made by projecting the flat pull-out prevention body radially along the axial direction from the outer periphery of the long cylindrical pile body To create a foundation for connecting signs.   2. The method for constructing a foundation for connecting signs according to claim 1, wherein the anchor pile is fixed to the upper end of the pile body so that the substrate forms a certain angle with respect to the axial direction.

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