JPH06299565A - Method for constructing wall and retaining wall - Google Patents

Abstract

PURPOSE:To decrease the amount of surplus soil of excavation to simplify construction and set a retaining wall in a narrow area by embedding a pile with a box nut in a vertical hole excavated at predetermined intervals and fixing a PC wall member on the pile by means of a bolt. CONSTITUTION:Vertical holes 9 are excavated at predetermined intervals and a cylindrical pile 1 including therein a box nut 4 is embedded into the hole 9 in such a manner that the upper end of the pile comes to a level with the surface of the ground. Next, a PC wall member 14 having a bolt through-hole 18 is placed on the pile 1 and a bolt 20 is threaded into the box nut 4 to fix the PC wall member 14. And a continuous footing extending the entire length of the wall is not needed and the amount of removed soil which is excavated is decreased and the wall can be easily fixed. It follows that a retaining wall can be installed even in a narrow area at low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a fence or retaining wall, and more particularly to a method of easily constructing a fence or retaining wall even in a narrow space.

[0002]

2. Description of the Related Art Conventionally, construction methods for constructing walls and retaining walls are
Build a cloth foundation on the ground over the entire length of the fence and retaining wall,
The wall material is installed and fixed on this cloth foundation.

[0003]

By the way, in the above-mentioned conventional construction method, since the amount of excavated soil is large due to the construction of the cloth foundation, it is difficult to treat the remaining soil, and the construction of the cloth foundation and the cloth foundation are performed. It takes time and effort to fix the wall material to the wall, which lengthens the construction period and raises the construction cost.

Further, a wide working space is required for constructing the cloth foundation and fixing the wall material, and there is a problem that construction cannot be performed in a narrow place.

Therefore, an object of the present invention is to provide a method of constructing a fence or retaining wall, which requires less residual soil treatment, can shorten the construction period and cost, and can be constructed in a narrow place without trouble.

[0006]

In order to solve the above problems, a first aspect of the present invention excavates vertical holes in the ground and buries piles in each vertical hole so that the upper ends of the vertical holes face the ground. The PC wall material is installed on the pile, and the PC wall material and the pile are fastened with bolts.

In the second aspect of the invention, vertical holes are excavated on the ground at a predetermined interval, and a pile suspended so that the position can be vertically adjusted by a suspending jig is inserted into the vertical hole and suspended. A structure in which the hanging jig is grounded and the pile top is leveled, then the pile is embedded in the vertical hole, the PC wall material is installed on the pile after removing the hanging jig, and the PC wall material and the pile are fastened with bolts. Is adopted.

According to the third aspect of the invention, vertical holes are excavated in the ground, and the piles are buried in the vertical holes so that their upper ends face the ground.
Wires are arranged in parallel in the upper part of the pile, and the PC wall material is hung on this wire via the pulley and chain block.
This is a structure in which the PC wall material is moved along a wire to a predetermined pile, and the PC wall material is lowered onto the pile and fastened to the pile with bolts.

[0009]

[Operation] A vertical hole is excavated in the ground, and a pile is inserted or built in the vertical hole, the periphery of the pile is embedded and fixed to the ground, and then the PC wall material is transported and installed on the pile. If the pile and the PC wall material are fastened with bolts, a fence or retaining wall can be constructed.
The PC wall material can be supported by the falling friction of the pile and the bearing capacity.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 (A) and 1 (B) show a cylindrical pile 1 buried in a vertical hole excavated in the ground, in which a through hole 3 is provided at the center of a circular end plate 2 fixed to the upper end surface. A cap nut 4 is fixed to the through hole 3 on the lower surface of the plate 2, and a nut 6 is welded to the lower surfaces of circular holes 5 provided on both sides of the through hole 3 for level adjustment. Bolt 7 is nut 6
The head of the bolt 7 is housed in the circular hole 5, and the bolt 7 can be vertically adjusted by turning with a tool.

The pile 1 may be an existing pile such as a concrete pile or a PC pile, or may be a cast-in-place pile which is constructed by using a form, and the vertical length and diameter of the pile 1 are a fence or a retainer to be constructed. It may be set according to the conditions of the wall, for example, a diameter of 30
Generally, the length is 0 mm and the length is about 1000 mm. The end plate 2 is fixed to the reinforcing bar 8 of the pile 1 by welding or the like.

2 (A) and 2 (B) are suspension jigs 10 used for incorporating the existing piles 1 into the vertical holes 9 excavated in the ground.
And the base jacks 12 are provided at both ends of the suspension rod 11 using the channel material.
A plurality of hanging bolts 13 for setting are attached in the middle of, and the central portion of the hanging rod 11 is hung by a heavy machine such as a crane.

The above-mentioned hanging bolt 13 for setting penetrates the hanging rod 11 by pivoting so that the position can be adjusted up and down, and the male screw at the lower end is screwed into the cap nut 4 of the pile 1 to suspend it. The pile 1 is hung below the hanging rod 11 so that the pile 1 can be adjusted up and down.

3 (A) to 3 (C) show a PC wall material 14 installed and fixed on the pile 1, and the lower base portion 15 and the upright portion 1 are shown.
6 is formed in an L shape, and at the positions of both ends of the lower base portion 15, a recessed step portion 17 on the upper surface side and a through hole 18 penetrating from the recessed step portion 17 to the lower surface are provided. Recessed step 1
By screwing the fastening bolt 20 penetrating the through hole 18 from the washer 19 housed in the 7 into the cap nut 4 of the pile 1,
It is fastened and fixed on the pile 1.

The lower base portion 15 is provided with a grout material injection passage 21 which opens at the upper surface and communicates with the inside of the through hole 18, so that the periphery of the fastening bolt 20 can be covered with a grout material 22 such as mortar. It has become.

FIG. 4 shows that after the pile 1 is buried in the vertical hole 9,
The means for carrying the C wall material 14 on the pile 1 is shown, and the temporary column 23 is erected by screwing into the cap nut 4 on the piled-up piles near both ends of the piles 1 in parallel after burying. A wire 24 is stretched between the upper ends of both temporary columns 23, and both ends of the wire 24 are fixed to the buried pile 1 or a fixed object as appropriate so as to take a reaction force. The PC wall material 14 is suspended via the chain block 26.

The PC wall material 14 suspended on the wire 24 is
By moving it along the wire 24, it can be exposed to the desired pile 1, and the heavy PC wall material 14 can be easily transported even in a narrow space.

Next, a concrete construction method of the fence and the retaining wall will be described. First, the vertical hole 9 is excavated in the ground where the wall or retaining wall is to be constructed.

The vertical holes 9 are excavated to have a diameter and depth slightly larger than the pile 1, and are arranged in the above-mentioned construction direction in accordance with the intervals of the through holes 18 of the PC wall material 14.

Next, as shown in FIG. 2A, a plurality of piles 1 are attached to the hanging jig 11 with hanging bolts 13 for setting,
The hanging jig 11 is hoisted by a crane, and the pile 1 is lowered while facing the vertical hole 9, and the pile 1 is inserted into the vertical hole 9 while being suspended, and the jack base 12 is grounded. In this state, the setting suspension bolt 13 is rotated to level the upper end of the pile 1 so that the upper end of the pile 1 reaches a predetermined height and faces the ground.

As shown in FIG. 2A, the vertical hole 9 is inserted after the pile 1 is inserted.
After the sand 27 is driven into the lower part of the inside, concrete 28 is placed in the outer periphery of the pile 1 and the space of the vertical hole 9 to fix the pile 1 to the ground.

After the concrete 28 hardens, the hanging jig 11 is removed, and the PC wall material 14 is carried on the pile 1 and placed so that the through hole 18 of the lower base portion 15 is located on the cap nut 4.

At this time, if necessary, level adjustment is performed by the bolt 7 so that the PC wall material 14 becomes horizontal.

When the PC wall material 14 is transferred onto the pile 1, as shown in FIG. 4, if a wire 24 is used and it is hung and carried using a pulley 25 and a chain block 26, a heavy machine will not enter. It can be easily transported even in a narrow space.

When the PC wall material 14 is placed on the pile 1, as shown in FIG.
As shown in (C), the fastening bolt 20 inserted into the washer 19 is inserted into the through hole 18 and screwed into the cap nut 4 of the pile 1 to fix the PC wall material 14 to the pile 1.

After that, the grout material 22 is injected from the injection path 21 into the through hole 18, and the through hole 18 and the recessed step portion 17 are filled with the grout material 22, so that the fastening bolt 20 and the washer 19 are fixed. Cover to prevent rust.

As described above, the PC wall material 14 is sequentially mounted on the pile 1.
By arranging and fixing them, a fence or retaining wall of the required length can be constructed, and a fence or retaining wall with stable strength can be obtained by the overturning friction and the bearing capacity of the pile 1 buried in the ground. Become.

[0029]

As described above, according to the present invention, since it has the above-mentioned structure, the following effects can be obtained.

(I) Since the piles are embedded at a predetermined interval and the PC wall material is fixed on the piles, a fence or a retaining wall can be easily constructed and can be easily constructed even in a narrow place. (II) Since the vertical holes are excavated and lined up, the amount of excavated soil is small,
Remaining soil treatment becomes easy. (III) It is possible to construct fences and retaining walls with excellent strength by the overturning friction and the bearing capacity of piles buried in the ground. (IV) Since the PC wall material is fastened to the pile with bolts, the PC wall material can be easily set, and the construction period and cost can be reduced. (V) Since the PC wall material is hung on a wire and transferred, a heavy PC wall material can be easily transported even in a narrow place.

[Brief description of drawings]

1A is a vertical cross-sectional view of a pile, and FIG. 1B is a plan view of the same.

FIG. 2 (A) is a vertical sectional front view showing a pile hanging jig;
(B) The vertical side view which expanded the same as the above.

FIG. 3 (A) is a vertical cross-sectional view showing fixing of a PC wall material and a pile,
FIG. 3B is a plan view of the same as above, and FIG.

FIG. 4 is an explanatory diagram showing the suspended transportation of PC wall material.

[Explanation of symbols]

 1 Pile 2 End plate 4 Cap nut 7 Level adjustment bolt 9 Vertical hole 10 Hanging jig 13 Set hanging bolt 14 PC wall material 18 Through hole 20 Fastening bolt 24 Wire 25 Pulley 26 Chain block

Claims (7)

[Claims] 1. A vertical hole is drilled in the ground, a pile is buried in each vertical hole so that the upper end of the vertical hole faces the ground, a PC wall material is installed on the pile, and the PC wall material and the pile are bolted. Construction method for fences and retaining walls characterized by fastening. 2. The method for constructing a fence or retaining wall according to claim 1, wherein an existing concrete pile or a PC pile is used as the pile buried in the vertical hole. 3. The fence according to claim 1, wherein the pile to be buried in the vertical hole is a cast-in-place pile to be built in the vertical hole.
Retaining wall construction method. 4. A vertical hole is excavated on the ground at a predetermined interval, and a pile is hung so that the vertical position of the vertical jig can be adjusted by a hanging jig, and the hanging jig is grounded. The fence is characterized in that the pile is buried in the vertical hole after leveling the upper end of the pile, the PC wall material is installed on the pile after removing the hanging jig, and the PC wall material and the pile are fastened with bolts. ， Retaining wall construction method. 5. A vertical hole is excavated in the ground, a pile is buried in each vertical hole so that the upper end of the vertical hole faces the ground, and a wire is stretched and arranged in parallel in the upper part of the pile. And a PC wall material is hung via a chain block, the PC wall material is moved along a wire to a predetermined pile, and the PC wall material is lowered onto the pile and fastened to the pile with bolts. Fence,
Retaining wall construction method. 6. The level adjusting bolt is mounted on the pile in advance, and the level of the PC wall material is adjusted with the bolt when the PC wall material is installed. How to build walls and retaining walls. 7. A cap nut is fixed to the upper part of the pile, and P
The bolt inserted through the through hole of the C wall material is fastened to the cap nut to fix the pile and the PC wall material, and the bolt fastening portion is covered with the grout material. How to build walls and retaining walls.