JP2015063794A - Retaining wall and method for constructing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earth-retaining wall requiring no use of a hollow box-shaped member and in which a size of a soldier beam can be easily changed according to earth pressure acting on the earth-retaining wall and a vertical dimension can be highly constructed even when an erection accuracy of the soldier beam is not high, and to provide a method for constructing the same.SOLUTION: A retaining wall includes: a soldier beam (such as H-steel 1) erected on the soil; a plate-like panel (lightweight panel 2) arranged adjacent to the soldier beam; fixing metal fittings (3 to 5) for fixing the plate-like panel to the soldier beam; a mold form (6) having a U-shaped cross-section and arranged so as to surround the fixing metal fittings (3 to 5) and the soldier beam (over a region corresponding to the vertical dimension of the plate-like panel); and solidifying material (infilling concrete 7) filled inside the mold form (6).

Description

  The present invention relates to a mountain retaining wall and a parent pile panel wall construction method for constructing such a retaining wall.

The parent pile panel wall construction method is a construction method for building a retaining wall for mountain retaining in road widening construction and disaster recovery construction. When constructing this method, the parent pile (H-shaped steel or steel pipe) is built in the ground, and the concrete panel (parent pile panel) is inserted into the parent pile for installation, and the hollow part inside the parent pile panel is filled with mortar. To do.
In order to improve the construction efficiency of the parent pile panel wall work, a technique that uses a hollow box-type block having a special shape as the parent pile panel has been conventionally proposed (see, for example, Patent Documents 1 to 3). ).

Such a block is useful, but has a problem of large dimensions (for example, 2 m in width and 1 m in height) and a large weight (for example, about 1.6 t).
In order to insert such a hollow box-type block into the main pile, it is indispensable to use a large heavy machine. In a narrow construction site where a large heavy machine cannot enter, the above-described conventional techniques (Patent Documents 1 to 3) are used. The construction used is impossible.

Moreover, in the prior art (patent documents 1-patent document 3) which uses the hollow box type block mentioned above as a parent pile panel, the size of the inner space of the said block is decided. For this reason, the size of the parent pile into which the block can be inserted is also determined.
However, when the earth pressure acting on the retaining wall (mountain retaining wall) is large and a larger parent pile should be used, the block prepared in advance cannot be inserted into the parent pile and must be replaced. There are cases where it is not possible. Therefore, in the above-described conventional technology, it is difficult to change the size of the parent pile corresponding to the earth pressure acting on the retaining wall.

  Furthermore, in the prior art (Patent Literature 1 to Patent Literature 3) using the hollow box-type block as the parent pile panel, it is difficult to stack the blocks in many stages unless the accuracy of the construction of the parent pile is high. It is. Therefore, it was difficult to create a retaining wall having a large vertical dimension.

Japanese Patent No. 2918420 Japanese Patent No. 2918421 Japanese Patent No. 2928903

  The present invention has been proposed in view of the above-mentioned problems of the prior art, and it is not necessary to use a hollow box type member, and the size of the parent pile corresponding to the earth pressure acting on the retaining wall of the mountain retaining type The purpose is to provide a retaining wall of a retaining type that can be easily changed, and can be constructed with a high vertical dimension even if the accuracy of the construction of the main pile is not high, and a method of constructing it. Yes.

The retaining wall (mounting retaining wall 100) of the present invention is
A parent pile built in the ground (eg H steel 1),
A plate-like panel (lightweight panel 2) arranged adjacent to the main pile;
Fixing brackets for fixing the plate-like panel to the main pile (angle material 3, plate 4, bolt 5: The angle material 3 and plate 4 are basically made of metal, but it is made of a material other than metal such as resin or FRP. Can also be configured)
A frame (6) having a U-shaped cross section disposed so as to surround the fixing bracket (3 to 5) and the main pile (a region corresponding to the vertical dimension of the plate-like panel);
It has the solidified material (filled concrete 7) filled in the mold (6).

The construction method (parent pile panel wall construction method) of the present invention for constructing such retaining walls (mountain retaining walls)
A process of building a parent pile (for example, H steel 1) on the ground (B in FIG. 5);
A step of placing a plate-like panel (lightweight panel 2) adjacent to the main pile (1) built in the ground (C in FIG. 5);
A step (D in FIG. 5) of fixing the plate-like panel (2) to the parent pile (1) (a part thereof) by the fixing metal fittings (3 to 5);
A step of placing the formwork (6) so as to surround the fixing bracket (3-5) and the main pile (1) (area corresponding to the vertical dimension of the plate-like panel) (E in FIG. 5);
It has the process (F of FIG. 5) which fills a solidification material (filled concrete 7) in a formwork (6).

In the practice of the present invention, both the type (6) that remains after the solidifying material (7) is solidified and the type that is removed after the solidifying material (7) is solidified can be used.
Moreover, it is preferable that a plate-shaped panel (lightweight panel 2) is the shape bent so that it might have the hollow which accommodates a parent pile (for example, H steel 1).

In carrying out the present invention, the plate-like panel (2) is preferably made of reinforced concrete. This is because when the plate-like panel (2) is made of a metal plate, there is a problem of anticorrosion and the cost is increased. However, in the present invention, it is possible to use a metal plate as the plate-like panel (2).
Further, the plate-like panel (2) used in the present invention can be constituted by a plate-like member made of fiber reinforced plastic (FRP) or a plate-like member made of ultra-high strength fiber reinforced concrete (UFC). Furthermore, instead of a reinforced concrete reinforcing bar, a fiber-reinforced plastic (FRP) rod-shaped member may be used.

The retaining wall of the present invention (mounting retaining wall 100B)
It has a main pile (for example, H steel 1) built in the ground, a plate-like panel (lightweight panel 2B) arranged adjacent to the main pile (1), and a plate-like panel fixing member (6B) And
The plate-like panel fixing member (6B) has a U-shaped cross section, and the U-shaped hollow portion surrounds the parent pile (1) (a part thereof),
The plate-like panel (2B) is provided with an opening (internal thread 26B) for fastening the plate-like panel fixing member (6B).
The plate-like panel fixing member (6B) has a panel fixing portion (61) for fixing to the plate-like panel (2B).
The opening (26B) of the plate-like panel (2B) and the panel fixing portion (61) of the plate-like panel fixing member (6B) are fastened by the fastening member (B),
The space inside the plate-like panel fixing member (6B) is filled with a solidifying material (filled concrete 7).

The construction method (parent pile panel wall construction method) of the present invention for constructing the retaining wall (mounting retaining wall 100B) is as follows:
The process of building a parent pile (for example, H steel 1) on the ground (G),
Placing a plate-like panel (lightweight panel 2B) adjacent to the parent pile (1) built in the ground (G);
A step of aligning the panel fixing portion (61) of the plate-shaped panel fixing member (6B) having a U-shaped cross section created in advance with the opening (26B) of the plate-shaped panel (2B);
Fastening the opening (26B) of the plate-like panel (2B) and the panel fixing portion (61) of the plate-like panel fixing member (6B) with the fastening member (B);
It has the process of filling the space inside a plate-shaped panel fixing member (6B) with a solidification material (filled concrete).

According to this invention which comprises the structure mentioned above, a plate-shaped panel (lightweight panel 2) is arrange | positioned adjacent to the main pile (for example, H steel 1) built in the ground (G), and fixing bracket (3 To 5), the plate-like panel (2) is fixed to the parent pile (1), the formwork (6) is arranged so as to surround the fixing bracket (3-5), and the formwork (6) The retaining wall (mounting retaining wall) having a desired height is constructed by repeatedly filling the inside with the solidified material (filled concrete 7).
And the retaining wall of the present invention does not use a hollow box-type block, and uses a relatively lightweight plate-like panel (2) and a fixing metal fitting (3-5) to create a retaining wall (solidified material ( 7) is filled only in a limited area (area corresponding to the vertical dimension of the plate-like panel of the parent pile 1) surrounded by the formwork (6). Therefore, it is possible to create a retaining wall using a small crane only.
And since it can be constructed using only a small crane, it is possible to create a retaining wall even in a narrow construction site where large heavy machinery cannot enter.

Moreover, in the prior art using a hollow box type block, since the size of the inner space of the hollow box type block is determined, the size of the usable parent pile is also determined. Therefore, at sites where a large pile with large earth pressure is required and a large size is required, unless the entire hollow box block is replaced with a large size, a retaining wall using a large pile with the large size is not used. I couldn't build it.
On the other hand, according to the present invention, it is possible to freely change the size of the main pile (1) by changing the length of the fixture (angle member 3, plate 4, bolt 5). Therefore, it is possible to easily change the size of the parent pile corresponding to the earth pressure.

Furthermore, in the construction method using the hollow box type block of the prior art, if the accuracy of the construction of the main pile is not high, the blocks cannot be stacked in many stages, and it is difficult to create a high retaining wall. is there.
On the other hand, according to this invention, even if the parent pile (1) is inclined, the formwork (6) can be installed using the fixing brackets (3 to 5), and the retaining wall of the mountain type can be created. . That is, it is possible to easily construct a retaining wall having a desired vertical dimension even if the embedding accuracy of the main pile (1) is not high.
Moreover, even if the erection accuracy of the parent pile (1) is not high and the parent pile (1) is not erected at an appropriate position, by adjusting the fixing brackets (3-5) as appropriate, The panel (2) can be fixed to the parent pile (1) while being arranged at an appropriate position. And if a formwork (6) is installed and it fills with the solidification material (7), the retaining wall 100 of a retaining type can be created.

Here, in the prior art using a hollow box type block, when an external force acts from the front side (side where the retaining wall is visible) and the block is damaged, the entire block must be replaced. And the work which replaces a hollow box type block requires a great deal of labor and cost.
On the other hand, in the present invention, even if the plate-like panel (2) is damaged due to an external force acting from the front side, it is not necessary to replace all the components, and only the damaged plate-like panel (2) is replaced. good. And the operation | work which replace | exchanges only the damaged plate-shaped panel (2) is much easier compared with replacing | exchanging the whole hollow box type block based on a prior art.

In the present invention, by filling the formwork (6) with concrete (filled concrete 7), corrosion of the parent pile (1) and the fixing brackets (3 to 5) can be prevented.
In addition, if the fixing metal fittings (3, 4) have a strength sufficient to withstand the placing pressure of the raw concrete by filling the filling concrete (7), the plate-like panel (2) may be damaged. Even if a large earth pressure acts, the fixing brackets (3, 4) are not deformed.
In other words, even if the fixing metal fittings (3, 4) have only a strength enough to bend and deform if there is no filling concrete (7), the filling concrete (7) is filled. If so, it will not be deformed even if a large earth pressure acting on the plate-like panel (2) is damaged. Therefore, the strength of the fixing brackets (3, 4) may be higher than the strength that can withstand the placing pressure of the filling concrete (7), and the fixing brackets (3, 4) may be small and light. However, the bolt-shaped fixing bracket (bolt 5) needs to be strong enough to withstand a large earth pressure that may damage the plate-like panel (2).

In the conventional wall construction technology using a hollow box block, the back of the retaining wall is filled with soil before the concrete filled in the space inside the hollow box block (so-called “clearance”) is solidified. Then, the hollow box block is displaced to the front side due to the earth pressure of the filled soil.
On the other hand, in the present invention, the plate-like panel is fixed to the parent pile (1) by the fixing metal fittings (3 to 5), so if it is within the strength range of the fixing metal fittings (3 to 5), Even if the back side is filled with soil, the plate-like panel (2) does not shift to the front side. Therefore, even before the solidified concrete (7) is solidified, the back side of the retaining wall can be filled with soil (if it is within the strength range of the fixing brackets 3 to 5). ) Can save time to solidify and work can progress.

In the present invention, if a plate-like member (27) is provided on the upper edge of the back side of the plate-like panel (2), the plate-like member (27) is used as a guide and the upper plate on the lower plate-like panel (2). The plate-like panel (2) can be accurately stacked.
As a result, it is possible to accurately stack the plate panels in the vertical direction.

1 is a perspective view showing a first embodiment of the present invention. It is a section top view showing a 1st embodiment. It is a front view of the plate-shaped panel in 1st Embodiment. It is a top view of the plate-shaped panel of FIG. It is process drawing which shows the construction procedure of 1st Embodiment. It is explanatory drawing explaining the effect | action of the filling concrete in 1st Embodiment. It is explanatory drawing which shows the case where there is no filling concrete in 1st Embodiment. It is a cross-sectional top view which shows 2nd Embodiment of this invention. It is a cross-sectional top view which shows 3rd Embodiment of this invention. It is a cross-sectional top view which shows 4th Embodiment of this invention. It is a section top view showing a 5th embodiment of the present invention. It is a section top view showing a 6th embodiment of the present invention. It is a section top view showing a 7th embodiment of the present invention. It is a section top view showing an 8th embodiment of the present invention. It is a front view which shows 9th Embodiment of this invention. It is a top view of the plate-shaped panel used in 9th Embodiment of FIG. It is explanatory drawing which shows 10th Embodiment of this invention. It is a side view which shows 11th Embodiment of this invention. It is explanatory drawing (plan view) of 11th Embodiment of FIG. It is a side view which shows the modification of 11th Embodiment. It is explanatory drawing (plan view) of the modification of FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
First, a first embodiment will be described with reference to FIGS.
In FIG. 1, the retaining wall according to the present invention is indicated generally by the reference numeral 100.
1 and 2, a retaining wall 100 includes a main pile (H steel) 1 built in the ground G, a plate-like panel (lightweight panel) 2, and a fixture (an angle member 3, a plate 4, a bolt 5). ), A nut N2, a mold 6, and a filling concrete 7 (solidified material: FIG. 1) filled in the mold 6. In FIG. 2, a state before the form 6 is attached and the filling concrete 7 is filled is shown.
Although not shown, in the fixture, the angle member 3 and the plate 4 are basically made of metal, but can be made of a material other than metal such as resin or FRP.

In the illustrated embodiment, the bolt 5 is not provided with a bolt head, and a member in which a male screw is formed over the entire length, that is, a so-called “bar screw” is used.
In FIG. 1, the area on the right side of the plate-like panel 2 is an area in which embankment is performed after the retaining wall is completed (so-called “back side” area).

In the illustrated embodiment, the parent pile 1 is H steel. As shown in FIG. 2, the parent pile 1 is located at the approximate center of the mold 6 (in the left-right direction in FIG. 2).
1 and 2, the angle member 3 is provided on the back side of the main pile 1 (H steel) (the region side where embankment is performed after the retaining wall is completed), and bolts 5 penetrate through both ends thereof. . A nut N2 screwed to the bolt 5 is provided adjacent to the angle member 3, and the angle member 3 is fixed in a state of contacting the back side of the parent pile 1 (H steel) by rotating the nut N2. I can do it.

As shown in FIGS. 1 and 2, the plate 4 is disposed in a region between the main pile 1 (H steel) and the plate-like panel (lightweight panel) 2. And it is comprised so that adjustment of the position of the plate 4 according to the relative position of the main pile 1 (H steel) and the plate-shaped panel (lightweight panel) 2 is possible.
In FIG. 2, the plate 4 arranged in the gap between the parent pile (H steel) 1 has bolts 5 passing through both ends thereof, and a nut N1 that is screwed into the bolt 5 is adjacent to the plate 4. Is provided. If the nut N1 is rotated, the relative positions of the plate-like panel 2 and the main pile (H steel) 1 in the front and back direction (vertical direction in FIG. 2) can be adjusted. Therefore, even if the embedding accuracy of the main pile (H steel) 1 is low and the relative positions in the front and back directions of the plate-like panel 2 and the main pile (H steel) 1 are not uniform, the plate 4 is used as the parent pile (H steel). It can arrange | position in the state contacted to 1 front side (plate-like panel 2 side).

In the illustrated embodiment, the angle member 3 having an L-shaped cross section is used, but a flat plate member or other cross-sectional member may be used.
Moreover, if it can arrange | position between the parent pile 1 (H steel) and the plate-shaped panel 2 (lightweight panel), the plate 4 can also be used as the angle material of the cross-section L-shape, or another cross-sectional member.

In FIG. 1, the plate-like panel 2 shown in a state of being stacked in two layers is a concrete panel, and details of the plate-like panel 2 are shown in FIGS. 3 and 4.
Here, it is also possible to use a metal plate as the plate-like panel. In addition, when the plate-shaped panel 2 is made of metal, it is disadvantageous to the concrete panel in terms of corrosion resistance and cost.
Further, a plate member of fiber reinforced plastic (FRP) can be used for the plate-like panel, or a composite member combining concrete and fiber reinforced plastic (FRP) can be used.

3 and 4, the plate-like panel 2 has a cross-sectional shape (see FIG. 3) including a central thick portion 21, flange portions 22 at both ends, a central thick portion 21, and flange portions 22 at both ends. An inclined portion 23 to be connected is provided.
In FIG. 4, a white arrow F indicates a side (back side) where the embankment is filled after the retaining wall is completed.

In FIG. 3, trapezoidal protrusions 24 are formed at the upper edge portion of the plate-like panel 2 and at two locations near the central thick portion 21, the inclined portion 23, and the connecting portion.
On the other hand, in the lower edge portion of the plate-like panel 2 and at positions (two locations) below the trapezoidal protrusion 24 in the vertical direction, concave portions 25 complementary to the protrusion 24 are formed.
When stacking a plurality of plate-like panels 2 in the vertical direction, the upper and lower plate-like panels 2 are accurately placed by fitting the recesses 25 of the upper plate-like panel 2 into the protrusions 24 of the lower plate-like panel 2. Can be stacked.

An insert 26 in which two pairs of female screws (L1, L2) having different pitches are formed on the surface on the back side (the side where the embankment is filled) of the central thick portion 21 of the plate-like panel 2 is formed on the plate-like panel 2. It is embedded in two upper and lower stages so as to open on the back side surface.
Although not clearly shown in the drawing, the insert 26 (for example, a steel insert) is formed with a female screw.
The female thread of the insert 26 with the pitch L1 is screwed with the bolt 5. The female thread of the insert 26 having the pitch L2 is screwed with a bolt (not shown) that fixes the mold 6.

In the present specification, the angle member 3, the plate 4, and the bolt 5 may be collectively referred to as “fixing bracket”. Further, as described above, the angle member 3 is not limited to the L-shaped cross section, and the plate 4 is not limited to the flat plate member. Further, there is a case where the plate 4 is omitted from the fixture.
In the illustrated embodiment, the bolt 5 is a so-called “bar screw”, but a bolt provided with a bolt head can also be applied.

As shown in FIGS. 1 and 2, the bolt 5 penetrates the angle member 3 and the plate 4, and the tip of the bolt 5 is screwed with a female screw of an insert 26 embedded in the plate-like panel 2.
As shown in FIG. 2, the plate-like panel 2 is fixed to the parent pile (H steel) 1 by screwing the nut N2 into the bolt 5 and tightening with a proper torque. Although not shown, when the bolt 5 having a bolt head is used, the nut N2 is not necessary.

The mold 6 has a U-shaped cross section. As the mold 6, a precast ready-made product can be used, but a sheet metal product or other commercially available products may be used. Alternatively, the mold 6 may be made of metal or resin.
Here, as the formwork 6, both a type to be buried and a type to be removed when the concrete is solidified can be used.
When there are a plurality of sizes of the parent pile (H steel) 1, the formwork 6, the angle member 3, and the bolt 5 may be selected based on the size of the parent pile (H steel) 1.

With reference to FIG. 5, the procedure of the retaining wall construction by 1st Embodiment is demonstrated.
As shown in step A of FIG. 5, first, a hole H for embedding the parent pile (H steel) 1 in the ground G is drilled by the excavator M. Here, prior to drilling the hole H, a foundation (concrete) BC may be placed.
In the step B of FIG. 5, the parent pile (H steel) 1 is built into the hole H that has been drilled.
In the process of FIG. 5C, in the main pile (H steel) 1 built in the drilled hole H, the plate-like panel 2 is arranged on the front side (side not filled with embankment: the left side of C in FIG. 5). Here, a gap exists between the plate-like panel 2 and the parent pile (H steel) 1. However, in actual construction, there are cases where the gap between the parent pile 1 and the plate-like panel 2 is extremely small, or cases where the parent pile 1 and the plate-like panel 2 are in contact.

5D, the plate-like panel 2 is fixed to the parent pile (H steel) 1 using the angle member 3, the plate 4, the bolt 5, and the nut N2. Here, the plate 4 is arrange | positioned in the clearance gap between the plate-shaped panel 2 and the parent pile (H steel) 1, and the angle material 3 is arrange | positioned at the back side (side where a banking is filled) of the parent pile 1. FIG.
In the process of E of FIG. 5, the part 6 in which the plate-like panel 2 is fixed to the parent pile 1 is covered with the angle member 3, the plate 4, the bolt 5, and the nut N <b> 2 by the mold 6 having a U-shaped cross section. At that time, the mold 6 is fixed to the plate-like panel 2 by arranging so that the open side of the cross-section of the mold 6 is in contact with the plate-like panel 2.
In the process F of FIG. 5, filling concrete (solidified material: for example, ready concrete) 7 is poured into the mold 6 fixed to the plate-like panel 2, and the upper surface of the filling concrete 7 coincides with the upper edge of the mold 6. Fill until

In the process of G of FIG. 5, in the plate-like panel 2, the parent pile (H steel) 1, and the formwork 6 in which the filling concrete 7 is solidified and integrated, a plate-like shape having the same shape on the upper side of the plate-like panel 2. Stack the panels 2 together.
As described above with reference to FIGS. 3 and 4, the protrusions 24 of the lower plate-like panel 2 fit into the recesses 25 of the upper plate-like panel 2, so that the plate-like panels 2 are stacked one above the other. When it becomes stable.

Hereinafter, the process from D in FIG. 5 to the process in F in FIG. 5 are repeated, and the plate-like panels 2 are stacked up to the planned number of stages. Then, when the filling concrete 7 is solidified and the plate-like panel 2 and the parent pile 1 stacked up to a predetermined number of stages are integrated, the process proceeds to a process indicated by H in FIG.
In the process of H of FIG. 5, the embankment 300 is filled in a region between the back side of the retaining wall 100 (right side in FIG. 5H: the back side of the retaining wall 100) and the slope 200. Then, cap concrete (not shown) is placed.

FIG. 6 shows a state in which the inside concrete 7 is filled in the mold 6. In FIG. 6, the angle member 3, the plate 4, the bolt 5, and the nuts N1 and N2 are indicated by solid lines. 6 shows a state in which the formwork 6 remains. However, when the formwork 6 is removed after the filling concrete 7 is solidified, and after the filling concrete 7 is solidified, the formwork 6 remains. There are both cases to do.
FIG. 7 shows the parent pile (H steel) 1, the angle member 3, the plate 4, the bolt 5, and the nuts N1 and N2 when it is assumed that the filling concrete 7 is not filled. In the case shown in FIG. 7 (when the filling concrete 7 is not filled), an excessive force is applied to the bolt 5 due to the earth pressure of the embankment filled on the back side of the plate-like panel 2 acting. The angle member 3 and the plate 4 are bent (bent) and the bolt 5 is also deformed.
Therefore, the angle member 3, the plate 4, and the bolt 5 must be increased in size and weight by increasing the second moment of section to such an extent that such deformation does not occur.

On the other hand, in the case shown in FIG. 6 (in the case where the filling concrete 7 is filled: the first embodiment), the main pile (H steel) 1, the angle member 3, the plate 4, the bolt 5, the nuts N1, N2 Is solidified by solidifying the filling concrete 7. Therefore, if the filling concrete 7 in FIG. 6 is filled, the solidified filling concrete 7 is deformed (curved) even if an excessive pressure is applied to the angle member 3, the plate 4, and the bolt 5 due to earth pressure. , The angle member 3, the plate 4, and the bolt 5 are not deformed.
Therefore, the angle member 3, the plate 4, and the bolt 5 do not need to have strength as a structural material, and it is not necessary to increase the secondary moment, size, and weight to the extent that deformation does not occur even when earth pressure acts. . About the angle material 3 and the plate 4, it should just have the intensity | strength which can be equal to the casting pressure of the filling concrete 7. FIG. However, the bolt 5 needs to be strong enough to withstand a large earth pressure that can damage the plate-like panel 2.

In other words, according to the illustrated first embodiment, by integrating the main pile (H steel) 1, the angle material 3, the plate 4, the bolt 5, the nuts N <b> 1 and N <b> 2 with the filling concrete 7, the angle material 3. It is no longer necessary to increase the dimensions, weight, and moment of inertia of the plate 4 and bolt 5, and the size can be reduced. This has been confirmed by experiments by the inventors.
Further, by filling the filling concrete 7, the angle member 3, the plate 4, the bolt 5, and the nuts N <b> 1 and N <b> 2 do not touch the outside air, and the corrosion prevention performance is improved.

  According to 1st Embodiment which comprises the structure mentioned above, the plate-shaped panel 2 is arrange | positioned adjacent to the main pile H steel 1 built in the ground G, the angle material 3, the plate 4, the bolt 5, and nut N1. , N2 is used to fix the plate-like panel 2 to the parent pile 1, and the formwork 6 is arranged so as to surround the angle member 3, the plate 4, the bolt 5, and the nuts N1 and N2. The retaining wall 100 (mounting retaining wall) having a desired height is constructed by repeatedly filling the inside-filled concrete 7 into the wall.

The retaining wall 100 of the first embodiment does not require the use of a hollow box-type block, and is a relatively lightweight plate-like panel (light-weight panel) 2, an angle member 3 that is a fixing bracket, a plate 4, and a bolt 5. The retaining wall 100 can be formed using the nuts N1 and N2 and the form 6. Then, the filling concrete 7 is filled only in a limited area (a space inside the mold 6) surrounded by the mold 6.
Here, since it is not necessary to use a hollow box-type block, in the first embodiment, it is possible to create a retaining wall of a retaining type using only a small crane. Therefore, it is possible to create a retaining wall even in a narrow construction site where large heavy machinery cannot enter.

Moreover, in the prior art using a hollow box type block, since the size of the inner space of the hollow box type block is determined, the size of the usable parent pile is also determined. For this reason, at sites where a large pile with a large earth pressure is required to be used, anchors can be used together, but the dimensions are large unless the entire hollow box block is replaced with a large one. The retaining wall using the parent pile could not be constructed.
On the other hand, according to the illustrated first embodiment, the size of the main pile 1 can be freely changed by changing the lengths of the angle member 3, the plate 4, and the bolt 5. Therefore, the size of the parent pile 1 can be easily changed corresponding to the earth pressure.

Furthermore, in the construction method using the hollow box type block of the prior art, if the accuracy of the construction of the main pile is not high, the blocks cannot be stacked in many stages, and it is difficult to create a high retaining wall. there were.
On the other hand, according to the first embodiment shown in the figure, the plate-like panel 2 is attached using the angle member 3, the plate 4, the bolt 5, and the nuts N <b> 1 and N <b> 2 even if the erection accuracy of the main pile 1 is not high. Fixing to the main pile 1 and installing the form 6 can create a retaining wall 100 of a retaining type. Then, by appropriately adjusting the angle member 3, the plate 4, the bolt 5, and the nuts N <b> 1 and N <b> 2, the plate-like panel 2 can be fixed to the parent pile 1 while being arranged at an appropriate position. And if the formwork 6 is installed and the filling concrete 7 is filled, the retaining wall 100 of a mountain retaining type can be created. In other words, even if the erected position of the main pile 1 is inaccurate, the plate-like panel 2 is arranged at an accurate position, and the retaining wall 100 (having a desired vertical dimension) is constructed at an appropriate position. I can do it.

In the prior art using a hollow box type block, when an external force is applied from the front side (the side where the observer can see the retaining wall) and the block is damaged, the entire block must be replaced. And the work which replaces a hollow box type block requires a great deal of labor and cost.
On the other hand, in the illustrated first embodiment, even if an external force acts from the front side and the plate-like panel 2 is damaged, it is not necessary to replace all the components, and only the damaged plate-like panel 2 is replaced. It ’s fine. And since the work of exchanging only the damaged plate-like panel 2 is work with the angle member 3, the bolt 5, and the nuts N1, N2, compared with exchanging the entire hollow box block according to the prior art, It is much easier.

In the first embodiment shown in the figure, by filling the formwork 6 with the filling concrete 7, corrosion of the main pile 1, the angle member 3, the plate 4, the bolt 5, and the nuts N <b> 1 and N <b> 2 can be prevented.
In addition, by filling the filling concrete 7, it is not necessary to increase the size, weight, and sectional moment of the angle member 3, the plate 4, the bolt 5, and the nuts N 1 and N 2. If the angle member 3 and the plate 4 are strong enough to withstand the driving pressure of the raw concrete, the angle member 3 and the plate 4 are not deformed even if a large earth pressure acts on the plate-like panel 2. However, the bolt 5 needs to be strong enough to withstand a large earth pressure that can damage the plate-like panel 2.

  In other words, even if the angle material 3 and the plate 4 have only a strength enough to bend and deform if there is no intermediate filling concrete 7, if the intermediate filling concrete 7 is filled, the angle material 3 and the plate 4 are large. Does not deform even when earth pressure acts. Therefore, the angle member 3 and the plate 4 that are the fixing brackets are not required to have a strength as a structural member, and need not be stronger than a strength that can withstand the placing pressure of the filling concrete 7. The angle member 3 and the plate 4 that do not require great strength can be small and light. However, the bolt 5 needs to be strong enough to withstand a large earth pressure that can damage the plate-like panel 2.

In the conventional wall construction technology using a hollow box block, the back of the retaining wall is filled with soil before the concrete filled in the space inside the hollow box block (so-called “clearance”) is solidified. Then, the hollow box block is displaced to the front side due to the earth pressure of the filled soil.
On the other hand, in the illustrated first embodiment, the plate-like panel 2 is fixed to the main pile 1 by the angle member 3, the plate 4, the bolt 5, and the nuts N <b> 1 and N <b> 2. If it is within the strength range of the nuts N1 and N2, the plate-like panel 2 will not be displaced to the front side even if the back side of the retaining wall is filled with soil.
Therefore, even before the solidified concrete 7 is solidified, the back of the retaining wall 100 can be filled with the embankment within the range of the strength of the angle member 3, the plate 4, the bolt 5, the nuts N1, N2, It is possible to save time for solidifying concrete 7 to solidify and to proceed with the work.

Next, a second embodiment of the present invention will be described with reference to FIG. 8. In the first embodiment, as shown in FIG. 2, for example, the plate 4 includes a parent pile 1 (H steel) and a plate-like panel (lightweight). Panel) 2 is arranged in the area between. However, in FIG. 8, there is a case where the plate 4 cannot be disposed in the region indicated by the interval δ because the interval δ between the lower flange 1D of the main pile 1 (H steel) and the plate-like panel 2 is too narrow. .
In the second embodiment of FIG. 8, the plate 4 (not shown in FIG. 8) is divided into members 41 and 42. And the said members 41 and 42 are being fixed to the front side (plate-like panel 2 side) of the upper side flange 1U of the H steel 1 by the nut N1, respectively. In other words, the upper flange 1U of the H steel 1 is disposed so as to be sandwiched between the angle member 3 and the members 41 and 42.
Here, the reason why the plate 4 is divided into the members 41 and 42 is to prevent interference with the central portion (web) 1C of the H steel 1.

Here, FIG. 8 shows a state before the filling of the filling concrete 7 although the mold 6 is attached as in FIG.
According to the second embodiment of FIG. 8, the plate 4 is made of the H steel 1 and the plate panel 2 as shown in FIG. 2 because the interval δ between the lower flange 1 </ b> D and the plate panel 2 is too small. It is possible to deal with the case where it is not possible to place them in between.
Other configurations and operational effects in the second embodiment of FIG. 8 are the same as those of the first embodiment described with reference to FIGS.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 9 also shows a state before the mold 6 is attached and the filling concrete 7 is filled.
In the second embodiment of FIG. 8, members 41 and 42 corresponding to the plate 4 are arranged on the front side (the plate-like panel 2 side) of the upper flange 1U of the H steel 1. On the other hand, in 3rd Embodiment of FIG. 9, the members 41 and 42 are arrange | positioned at the front side (plate-shaped panel 2 side) of the lower flange 1D of H steel 1. FIG.
The third embodiment shown in FIG. 9 is similar to the second embodiment shown in FIG. 8 because the distance between the lower flange 1D and the plate-like panel 2 (dimension δ in FIG. 8) is too small. A case where the plate 4 cannot be disposed between the H steel 1 and the plate-like panel 2 can be dealt with.
Other configurations and operational effects in the third embodiment of FIG. 9 are the same as those of the second embodiment of FIG.

Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 10 also shows a state before the form 6 is attached but before the filling concrete 7 is filled.
In the fourth embodiment shown in FIG. 10, the member corresponding to the angle member 3 (not shown in FIG. 10) is composed of divided members 31, 32, and each of the members 31, 32 is made of H steel by a nut N2. 1 is fixed to the back side of the upper flange 1U (banking side: upper side in FIG. 10: side away from the plate-like panel 2).
Other configurations and operational effects in the fourth embodiment of FIG. 10 are the same as those of the embodiments shown in FIGS.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 11 also shows a state before the filling 6 is attached but the formwork 6 is attached.
In the fifth embodiment shown in FIG. 11, the member corresponding to the angle member 3 (not shown in FIG. 10) is composed of divided members 31 and 32, and the member corresponding to the plate 4 is a divided member. 41, 42.
The members 31 and 32 are fixed to the back side of the lower flange 1D of the H steel 1 by nuts N2 (upper side in FIG. 11: the side separated from the plate-like panel 2), and the members 41 and 42 are respectively fixed by nuts N1. H steel 1 is fixed to the front side (lower side: plate-like panel 2 side in FIG. 11) of the lower flange 1D.
Since the members 31 and 32 corresponding to the angle member 3 are divided, they do not interfere with the central portion 1C of the H steel 1.
Other configurations and operational effects in the fifth embodiment of FIG. 11 are the same as those of the embodiments of FIGS.

A sixth embodiment of the present invention will be described with reference to FIG. FIG. 12 also shows a state before the form 6 is attached but before the filling concrete 7 is filled.
1 to 11, the plate 4 or divided members 41 and 42 are provided on the plate-like panel 2 side of the H steel 1, the upper flange 1U, and the lower flange 1D.
On the other hand, in the sixth embodiment of FIG. 12, members corresponding to the plate 4 or the divided members 41 and 42 are omitted. For example, the sixth embodiment can be applied when the distance between the lower flange 1D of the H steel 1 and the plate-like panel 2 is small.
Other configurations and operational effects in the sixth embodiment of FIG. 12 are the same as those of the embodiments of FIGS.

A seventh embodiment of the present invention will be described with reference to FIG. FIG. 13 also shows the state before the filling 6 is attached but the formwork 6 is attached.
In the seventh embodiment of FIG. 13, as in the fifth embodiment shown in FIG. 11, the member corresponding to the angle member 3 (not shown in FIG. 13) is composed of divided members 31 and 32, Members corresponding to the plate 4 (not shown in FIG. 13) are constituted by members 41 and 42.
The member members 31 and 32 corresponding to the angle members are fixed with nuts N2 on the back side of the upper flange 1U (the upper side in FIG. 13: the side separated from the plate-like panel 2), and the members 41 and 42 corresponding to the plates are It is fixed to the front side of the lower flange 1D (the lower side of FIG. 13: the plate-like panel 2 side) with a nut N1.
Other configurations and operational effects in the seventh embodiment of FIG. 13 are the same as those of the embodiments of FIGS.

An eighth embodiment of the present invention will be described with reference to FIG. FIG. 14 also shows a state before the filling 6 is attached but the formwork 6 is attached.
In the first to seventh embodiments shown in FIGS. 1 to 13, the angle member 3, the members 31 and 32, the plate 4, and the members 41 and 42 are used as the fixtures. In the eighth embodiment shown in FIG. U-shaped members 51 to 54 are used.
In FIG. 14, members 51 and 52 having a U-shaped cross section are fixed by fixing members (not shown) such as bolts so as to sandwich both ends of the upper flange 1U of the H steel 1. The U-shaped members 53 and 54 are fixed by fixing members (not shown) such as bolts so as to sandwich both ends of the lower flange 1D.
The U-shaped members 51 to 54 are attached to the bolts 5 by members (not shown) such as nuts.
Other configurations and operational effects in the eighth embodiment of FIG. 14 are the same as those of the first to seventh embodiments of FIGS.

Next, a ninth embodiment of the present invention will be described with reference to FIGS.
The ninth embodiment of FIGS. 15 and 16 differs from the first to eighth embodiments of FIGS. 1 to 14 in the shape of the plate-like panel 2A.
In the plate-like panel 2A shown in FIGS. 15 and 16, a plate-like member 27 (for example, metal) is provided on the upper edge of the back side of the plate-like panel 2A so that the plate-like panels 2A can be accurately stacked in the vertical direction. Is provided. Using the plate member 27 as a guide member, the upper plate panel 2A can be accurately stacked on the lower plate panel 2A.
The entire plate-like member 27 is formed in an L shape, and a portion corresponding to the short side of the L shape is embedded in the vicinity of the upper edge of the flange portion 22 of the plate-like panel 2A.

In the ninth embodiment shown in FIGS. 15 and 16, a bolt hole 27h is formed in a portion (exposed portion) corresponding to the long side of the plate-like member 27 in the plate-like panel 2A.
An insert 28 having an internal thread is embedded in the lower edge side of the plate-like panel 2A. The insert 28 is provided at a position aligned with the bolt hole 27h of the lower plate panel 2A when the two plate panels 2A are stacked one above the other. When two plate-like panels 2A are stacked one above the other, if the bolt holes 27h of the lower plate-like panel 2A and the inserts 28 of the upper plate-like panel 2A are fastened by bolts (not shown), the upper and lower The plate-like panels 2A are securely joined, and the stacking operation of the plate-like panels 2A is performed safely, quickly and reliably.

Other configurations and operational effects in the ninth embodiment of FIGS. 15 and 16 are the same as those of the embodiments of FIGS.
And it is possible to apply 9th Embodiment of FIG. 15, FIG. 16 to each embodiment of FIGS.

Next, a tenth embodiment will be described with reference to FIG.
In FIG. 17, the entire retaining wall is indicated by reference numeral 100B. In the retaining wall 100B of FIG. 17, a member 6B having a U-shaped cross section is used instead of the mold 6 and the fixtures (3-5, N1, N2) in FIGS. This member 6B is a product (precast product) created in advance, and the plate-like panel 2B is fixed to the main pile 1 by a precast member 6B having a U-shaped cross section.

In FIG. 17, two pairs of metal brackets 61 (four in total) are provided along the opening edge 6Be on both edges 6Be on the opening side of the U-shaped precast member 6B.
Bolt holes 61h are formed in the bracket 61, and the positions of the bolt holes 61h are set so as to be aligned with the four inserts 26B of the plate-like panel 2B when the precast member 6B is fixed to the plate-like panel 2B. Has been.
In the construction work of the retaining wall 100B, the U-shaped member 6B, which is a precast product, is disposed so as to surround the main pile 1 on the site, and is attached to the plate-like panel 2B with a fastening member such as a bolt B, for example. By attaching, work time can be shortened.

  Other configurations and operational effects in the tenth embodiment of FIG. 17 are the same as those of the embodiments of FIGS.

Next, an eleventh embodiment will be described with reference to FIGS.
18 and 19, the retaining wall is entirely indicated by reference numeral 100C. The retaining wall 100C is additionally equipped with a tension member corresponding to the tension supporting member of the anchor with respect to the retaining wall 100 of FIGS.

18 and 19, the retaining wall 100 </ b> C includes a plurality of connection members 8, a plurality of tension members 9, a clevis 10, and a pile 11.
In FIG. 18, the pile 11 is embedded on the slope 200 side so that the head 11 </ b> A is exposed on the ground surface side of the slope 200. As shown in FIG. 18, the pile 11 may be embedded perpendicularly to the slope 200 (pile 11-1), or may be embedded in a state inclined with respect to the vertical direction of the slope 200. Good (pile 11-2).
18 and 19, a bolt (tension bolt) 9 constitutes a tension member corresponding to the tension support member of the anchor. The tension bolt 9 is connected to the bolt 5. The bolt 5 is the same as the bolt 5 shown in FIGS. The bolt 5 and the tension bolt 9 may be formed with male screws having the same specifications.

The connection between the bolt 5 and the tension bolt 9 and the connection between the tension bolts 9 are performed by the connection member 8, and the connection member 8 is configured in a cylindrical shape in which female screws are formed at both ends.
In FIG. 18, two or more tension bolts 9 are used between the bolt 5 and the pile 11 (or clevis 10), but instead of the two or more tension bolts 9, male screws are formed at both ends. It is also possible to use a tension rod of books. Or you may use the wire rope which has the connecting terminal in which the external thread was formed in the both ends.

In FIG. 18, the connecting member 8 at the right end is fixed to the clevis 10. A connection plate member 11 </ b> B is fixed to the end surface of the pile 11 on the ground surface side.
The clevis 10 and the connecting plate member 11B are rotatably connected by a clevis pin 11P.
The plate-like panel 2 connected to the pile 11 embedded in the slope 200 by the plurality of connection members 8 and the plurality of tension bolts 9 is the plate-like panel 2 at the uppermost end of the retaining wall 100C, but below it. The plate-like panel 2 may be connected to the pile 11 via the connection member 8 and the tension bolt 9.

In the eleventh embodiment, the plate-like panel 2 is connected to the pile 11 embedded in the slope 200 via the connecting member 8 and the tension bolt 9, so that the rear side of the retaining wall 100C (the retaining wall 100C of FIG. Even if the earth pressure by the embankment 300 filled in the area between the right side (rear side of the retaining wall 100C) and the slope 200 acts on the retaining wall 100C, the connecting member 8, the tension bolt 9, and the pile 11 are the same as the anchor. Plays an important role and bears the earth pressure. Therefore, the resistance against earth pressure in the retaining wall 100C increases.
Other configurations and operational effects of the eleventh embodiment shown in FIGS. 18 and 19 are the same as those of the embodiments shown in FIGS.
The eleventh embodiment shown in FIGS. 18 and 19 can be applied to each embodiment shown in FIGS.

Next, a modification of the eleventh embodiment will be described with reference to FIGS. 20 and FIG. 21, the entire retaining wall is indicated by reference numeral 100D.
In the retaining wall 100C shown in FIGS. 18 and 19, the pile 11 embedded in the slope is used, whereas in the retaining wall 100D in FIGS. 20 and 21, the L-shaped block 12 embedded in the embankment 300 is provided. Used.

20 and 21, the L-shaped block 12 embedded in the embankment 300 has a shape obtained by inverting the “L” character. In FIG. 20, the L-shaped vertex 12 t is arranged so as to contact the slope 200. ing.
The tension bolt 9 at the right end passes through a bolt hole (not shown) formed in the L-shaped block 12, and is screwed with the nut N 3 on the right side of the L-shaped block 12. It is connected.

The earth pressure by the embankment 300 filled in the region between the back side of the retaining wall 100D (the right side of the retaining wall 100D in FIG. 20: the back side of the retaining wall 100D) and the slope 200 acts on the retaining wall 100D, and the soil Even if a tensile force due to pressure (a force for pulling the L-shaped block 12 to the left in FIG. 20) acts on the L-shaped block 12, the L-shaped block 12 is embedded in the embankment 300. The resistance force by acts on the L-shaped block 12. Therefore, in order to move the L-shaped block 12 to the retaining wall 100D side (left side in FIG. 20), a tensile force greater than the resistance force by the embankment 300 is required. Therefore, the strength against earth pressure in the retaining wall 100D is improved.
Other configurations and operational effects of the modification of the eleventh embodiment shown in FIGS. 20 and 21 are the same as those of the eleventh embodiment shown in FIGS. 18 and 19.
And the modification of FIG. 20, FIG. 21 is applicable to embodiment of FIGS.

  It should be noted that the illustrated embodiment is merely an example, and is not a description to limit the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Parent pile 2 ... Plate-shaped panel 3 ... Angle material 4 ... Plate 5 ... Bolt 6 ... Formwork 7 ... Solidification material / filled concrete 8 ... Connection Member 9 ... Tension bolt 10 ... Clevis 11 ... Pile 12 ... L-shaped block

Claims (4)

  The main pile built in the ground, the plate-like panel arranged adjacent to the parent pile, the fixing bracket for fixing the plate-like panel to the parent pile, and the arrangement to surround the fixing bracket and the parent pile A retaining wall comprising a mold having a U-shaped cross section and a solidifying material filled in the mold. It has a main pile built in the ground, a plate-like panel arranged adjacent to the parent pile, and a plate-like panel fixing member with a U-shaped cross section,
The plate-shaped panel fixing member has a U-shaped cross section, and the U-shaped hollow portion surrounds the parent pile.
The plate-like panel is provided with an opening for fastening the plate-like panel fixing member,
The plate-like panel fixing member has a panel fixing portion for fixing to the plate-like panel,
The opening of the plate-like panel and the panel fixing portion of the plate-like panel fixing member are fastened by a fastening member,
A retaining wall, wherein a solidifying material is filled in a space inside a plate-like panel fixing member. The process of building a parent pile on the ground,
A step of arranging a plate-like panel adjacent to the parent pile built in the ground;
A step of fixing the plate-like panel to the parent pile by the fixing bracket;
Arranging the formwork so as to surround the fixing bracket and the parent pile;
A method for constructing a retaining wall, comprising a step of filling a solid form with a solidifying material. The process of building a parent pile on the ground,
A step of arranging a plate-like panel adjacent to the parent pile built in the ground;
A step of aligning the panel fixing portion of the plate-shaped panel fixing member having a U-shaped cross-section created in advance with the opening of the plate-shaped panel;
Fastening the opening of the plate-like panel and the panel fixing portion of the plate-like panel fixing member with a fastening member;
A method for constructing a retaining wall, comprising a step of filling a space inside a plate-like panel fixing member with a solidifying material.

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