JP2002242164A - Civil engineering structure such as sediment control weir and levee or the like using steel sheet pile and thinning member or the like and construction method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a civil engineering structure and a construction method by using steel sheet piles at upstream side and thinning members or the like at downstream side as exterior wall members respectively and concrete is filled up inside the space between the exterior walls. SOLUTION: An end portion of a joint member is connected to a foundation beam determining the bottom position of the steel sheet pile, a bottom end of the steel sheet pile is inserted to the inside a channel of a foundation beam, and the steel sheet pile is supported by struts from the inner side. A waling member is jointed to the steel sheet pile, and anchors are attached to the waling members. Column members having channels are arranged on the foundation ground, a supporting plate for the column member is connected by the end of a tie member and connected to the foundation beam. Both ends of the thinning members or the like are inserted to the channel portion of the column member and piled up. An anchor member is attached to an anchor hooking plate, and concrete is poured to the inner side of the exterior wall members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering structure, such as a sabo dam, which is constructed by using a steel sheet pile on the upstream side and a thinned material on the downstream side as an outer wall material and filling the inside thereof with concrete. Belongs to the technical field of construction methods.

[0002]

2. Description of the Related Art Conventionally, an outer wall material on the upstream side is made of steel sheet piles, and an outer wall material on the downstream side is made of thinned wood or the like. There are no civil structures. However, as the structure of civil engineering structures such as sabo dams using steel sheet piles, for example,

(I) Civil structures such as sabo dams in which steel sheet piles are used as outer wall materials on the upstream and downstream sides and concrete is cast inside the piles (Japanese Patent Publication No. 4-33921,
JP-A-7-3750).

(II) Civil structures, such as sabo dams, in which a steel sheet is used as an outer wall material on the upstream and downstream sides and concrete is cast inside the material (Japanese Patent Publication No. 61-3929, Japanese Utility Model Application No. 60-160). No. 40530).

(III) Steel sheet piles are assembled in a zigzag pattern and used as outer wall materials on the upstream and downstream sides, and concrete is cast on the inside thereof.
No. 2727, Japanese Patent Publication No. 4-44464). Etc. belong to the public domain.

[0006] In any of the above civil structures (I) to (III), a steel sheet pile or the like is constructed directly on the foundation ground to complete an outer wall material, or a framework such as a foundation frame is constructed on the foundation ground. A construction method has been adopted in which a steel sheet pile or the like is joined to the frame to complete an outer wall material, and concrete is cast inside the outer wall material to complete a civil engineering structure.

[0007]

When the steel sheet pile is constructed directly on the foundation ground as in the above-mentioned prior art, the arrangement of the first-stage steel sheet pile, the inclination angle of the steel sheet pile, etc. are constructed as designed. It is difficult. That is, it is difficult to accurately shape the outer wall material (make and hold the shape as a concrete formwork).

Further, in order to complete the casting of the concrete at a stretch, the opposing outer wall materials are connected to each other by a connecting member such as a tie rod so as to withstand the concrete driving pressure, and the outer wall materials are deformed (so-called deformation). It is necessary to have a strong configuration that prevents

[0009] Therefore, a framework such as a foundation frame is constructed on the foundation ground, and a steel sheet pile is joined to the framework to complete the outer wall material. However, in this case, the number of members increases and the cost increases. Bulky. In addition, as the number of members increases, the assembling work becomes complicated.

Therefore, an object of the present invention is to make it possible to easily form the outer wall material (especially, the first step) with a small number of members and a small number of man-hours, and to reduce costs and improve work efficiency. Moreover, it is an object of the present invention to provide a civil engineering structure such as a sabo dam using a steel sheet pile and a thinned wood material having a high scenic nature in harmony with nature and a construction method thereof.

[0011]

As means for solving the above-mentioned prior art, a civil engineering structure such as a sabo dam using steel sheet pile and thinned wood according to the first aspect of the present invention is provided on the upstream side. The outer wall material is made of steel sheet pile, the outer wall material on the downstream side is made of thinned wood, etc., and the both outer wall materials are used as concrete formwork, and concrete is poured into the inside thereof, such as a sabo dam and the like. In a civil engineering structure, a foundation beam for determining a lower end position of an outer wall material on an upstream side is disposed as an upwardly-facing groove-shaped section material on a foundation ground, and the foundation beam includes the same foundation beam and a downstream column described below. One end of a tie connecting the support plate of the material is joined, the lower end of the steel sheet pile is inserted into the groove of the foundation beam, and the steel sheet pile is supported by the support material from the inside. The steel sheet piles are supported by horizontal pillars. The anchoring material is attached to the protruding material, and a supporting plate connected to the foundation beam by the connecting material is provided at a lower end portion, and a plurality of anchor hooking plates are spaced apart upward. Are provided at intervals on the foundation ground, and the other end of the joining material is joined to the support plate and connected to the upstream foundation beam. Both ends of the thinning material, which is the outer wall material on the downstream side,
It is inserted into the groove of the adjacent column material, is stacked substantially horizontally up to the vicinity of the upper end of the column material, and the buckling material is joined to the anchor hooking plate of the column material, and the anchor hooking plate or the buckling material is joined. Characterized in that an anchor material is attached to at least one of them, and concrete is cast inside the both outer wall materials.

According to a second aspect of the invention, in the civil engineering structure such as a sabo dam using the steel sheet pile and the thinned wood according to the first aspect of the invention, the concrete aggregate is a crusher run. And

According to a third aspect of the present invention, there is provided a method for constructing a civil engineering structure such as a sabo dam using a steel sheet pile and a thinned material, etc., wherein an upstream outer wall material is constituted by a steel sheet pile, and a downstream outer wall material. Is a method of constructing a civil engineering structure such as a sabo dam by using both outer wall materials as a concrete formwork, casting concrete inside the outer wall material, etc. A foundation beam for determining the lower end position is arranged on the foundation ground as an upward channel-shaped cross-section member, and one end of a linking material connecting the foundation beam and a support plate of a downstream column member described below to the foundation beam. Joining the lower portion of the steel sheet pile into the groove of the foundation beam, supporting the steel sheet pile with a column supported from the inside by a support material, and horizontally bending the steel sheet pile in a horizontal direction. Joining, and supporting to connect to the foundation beam by the connecting member Rates provided at the lower end, provided with a plurality of anchors hooking plate spaced upwardly, H
A column member having a groove portion such as a shape steel is arranged on the foundation ground at an interval, and the other end of the connecting member is joined to the support plate and connected to the upstream foundation beam; Inserting both ends of the thinning material or the like as the outer wall material into the groove of the adjacent pillar material, stacking the steel sheet pile near the upper end portion of the upstream short sheet pile, and joining the protruding material to the anchor hooking plate Step and inside of both outer wall materials, concrete is poured to a height at which each outer wall material is self-supporting, the upper part of the poured concrete is rolled with a vibrating roller or the like, and the upstream side bellows material, and downstream Attach the anchor material to at least one of the side anchor hooking plate or the bulging material, cure the cast concrete until the strength develops, and the construction of the outer wall material, concrete placement and compaction, And Ann Mounting of chromatography material, and a step of performing curing of the concrete, characterized in that it consists of a step repeated until the height of the civil engineering structures.

In the construction method of civil engineering structure such as a sabo dam using steel sheet pile and thinned wood according to the invention as set forth in claim 4, the outer wall material on the upstream side has a module length and a half module length. The outer wall material on the downstream side is made of thinned wood, etc., and the outer wall materials are used as concrete formwork, and concrete is poured into the inside thereof and civil engineering structures such as sabo dams are constructed. A foundation beam that determines the lower end position of the outer wall material on the upstream side is disposed as an upward groove-shaped cross section on the foundation ground, and the foundation beam and the downstream column described below are arranged on the foundation beam. Joining one end of a tie connecting the support plate of the material, and on the foundation beam,
At intervals in the longitudinal direction, the columns are erected at a constant inward inclination angle, and each column is supported by a support material from the inside, and the module length and approximately 1 / The first-stage steel sheet pile processed into a length of 2 modules is joined in a staggered arrangement, and the lower end of each is inserted into the groove of the foundation beam, so that the seams of the steel sheet piles are staggered in the vertical direction. And a step of attaching an uprighting material near the foundation beam of the first-stage short steel sheet pile, and a support plate connected to the foundation beam by the connecting material is provided at a lower end, and an anchor hooking plate is provided on the upstream side. The first column material having a groove portion, such as an H-shaped steel, which is provided at a height substantially equal to that of the steel sheet pile of the above and is processed into a module length, is arranged at intervals on the foundation ground, and the support plate is provided with Joining the other end of the lumber and connecting it to the upstream foundation beam, and inserting both ends of the thinning material, etc., which is the outer wall material on the downstream side, into the grooves of the adjacent pillars, respectively, Stacking substantially horizontally up to a height substantially equal to the height of the first-stage low steel sheet pile, attaching the buckling material to the anchor hooking plate provided near the height, and the first-stage short steel sheet pile on the upstream side The first-stage concrete is poured to the vicinity of the upper end of the concrete, and the upper part of the poured concrete is rolled with a vibrating roller or the like, and the anchor material is horizontally attached to at least one of the anchor hooking plate and the belly material. Placing the concrete on the top of the cast concrete, curing the concrete until the concrete develops its strength, and joining the steel sheet pile of the module length above the first short steel sheet pile on the upstream side. And said At the stage of bolting the second-stage uplifting material to the middle of the sheet pile, and thinning materials etc., which are outer wall materials on the downstream side, are stacked substantially horizontally to a height almost equal to the tall steel sheet pile on the upstream side, Attach the buckling material to the anchor hooking plate provided near the height, and place the second stage concrete near the upper end of the first stage tall steel sheet pile on the upstream side and roll it. Anchor material is attached horizontally to the downstream anchor hooking plate and the upstream second-stage flared material provided at a height substantially equal to the tall steel sheet pile, and then to the top of the cast concrete. Laying the concrete until the concrete develops its strength, and then joining the steel sheet pile, which is the outer wall material on the upstream side, to stand up, attach the uprighting material, add the pillar material on the downstream side, and thin the tree. Stacking of materials, etc., and provocation Repeating the steps of attaching the stiffener, casting and rolling concrete, attaching the anchor material and curing the cast concrete to the height of the civil engineering structure.

According to a fifth aspect of the present invention, in the method for constructing a civil engineering structure such as a sabo dam using the steel sheet pile and the thinned wood according to the third or fourth aspect of the present invention, the concrete aggregate is crusher run. It is characterized by being.

According to a sixth aspect of the present invention, there is provided a method of constructing a civil engineering structure such as a sabo dam using the steel sheet pile and the thinned wood according to any one of the third to fifth aspects. It is characterized by providing a bank material on the top.

[0017]

Embodiments and Examples of the Invention First, claims 4 to
6 shows an embodiment of a construction method of a civil engineering structure such as a sabo dam using steel sheet pile and thinned wood according to the invention described in FIG.
This will be described with reference to FIG.

In this construction method, as shown in FIGS. 1 to 3, the upstream outer wall material 3 is constituted by a steel sheet pile 5 processed into a module length and approximately 1/2 module length, and a downstream outer wall material is formed. The lumber 3 is composed of the thinned lumber 6 and is constructed at regular intervals, and the outer wall materials 3 and 3 are used as concrete forms,
The concrete 4 is cast inside the dam, and the sabo dam 1 is constructed.

First, FIG. 4 shows a state where the first step of constructing the sabo dam 1 is completed.

In the upstream foundation ground 2, a foundation beam 7 that defines the lower end position of the upstream outer wall material 3 is placed on the foundation ground 2, which has been previously solidified by earthwork, and has an upward groove-shaped section material. And one end of a connecting member 11 for connecting the foundation beam 7 and a support plate 9 of a downstream column member 8 described later is joined to the foundation beam 7. A plurality of the connecting members 11 are connected in the direction of the shaft member, and maintain the upstream base beam 7 and the support plate 9 of the downstream column member 8 at a constant interval.

More specifically, the outer wall material 3 on the upstream side
As shown in FIGS. 1 and 2 and the like, a known steel sheet pile having joint portions at both ends so that adjacent steel sheet piles can be joined to each other is used. It is used after being processed into two module lengths, so that each seam alternately changes in height, so-called staggered staggered arrangement. Therefore, the adjacent steel sheet piles 5, 5 can be easily and tightly joined to each other, so that the steel sheet piles 5,... Therefore, work efficiency can be improved, which contributes to cost reduction.

As shown in FIG. 5, a plurality of the foundation beams 7 for determining the lower end positions of the first-stage steel sheet piles 5 are joined to the bolts 12 according to the length of the outer wall material 3 (the length of the bank). The foundation beam 7 is arranged on the foundation ground 2 by being long connected to the plate 13. A connecting member 11 is arranged at a predetermined interval (about 2 m) in the longitudinal direction of the foundation beam 7, and one end thereof is bolted to the foundation beam 7.

On the foundation beam 7, an interval (2
m), and the support column 14 is tilted at a constant inclination angle (approximately 1.
4 rad), and each strut 14 has its base end connected to the connecting material 11.
It is supported from the inside by the support material 15 which is bolted to the side. The column 14 is made of angle steel having a height of about 1 m. As shown in FIGS. 2 and 9, the lower end of the column 14 is provided at the joint 7 between the foundation beam 7 and the connecting member 11.
The support member 15 is bolted to the vicinity of the upper end with the support member 15 so as to be supported at a constant inward inclination angle.

Using the support 14 as a guide, on the outside thereof,
As shown in FIGS. 5 and 9, the first-stage steel sheet piles 5 and 5 ′ processed into the above-described module length and approximately モ ジ ュ ー ル module length are joined in a staggered arrangement, and each lower end is connected to the foundation beam. 7, the first-stage steel sheet piles 5 and 5 'are erected as outer wall materials. Therefore,
The lower end position and the inclination angle of the first-stage steel sheet piles 5 and 5 'can be easily determined, and the work efficiency can be improved and the cost can be reduced.

Next, as shown in FIGS. 5 and 10, a common flaring material 16 is arranged near the foundation beam on the inner surface of the first-stage steel sheet piles 5 and 5 '. The steel sheet pile (in this embodiment, the short steel sheet pile 5 ′) which is in contact with 16 is connected to the belly material 16 with the bolt 12. In this case, the tall steel sheet pile 5 which does not hit the belly material 16
Are sandwiched between the inner side surface and the belly material 16 so as to sandwich the column 14, so that the steel sheet piles 5 do not fall outward due to the concrete pressure when the concrete 4 is cast.

On the other hand, as shown in FIGS. 3 and 4, a support plate 9 which is connected to the foundation beam 7 by the connecting member 11 is provided at a lower end of the downstream foundation ground 2 and an anchor hooking plate 10 is provided. The height H is substantially equal to the height of the steel sheet pile on the upstream side, that is, in the present embodiment, is provided at the intermediate portion and the upper end portion, and is processed to a length substantially equal to the module length of the steel sheet pile 5 on the upstream side (for example, about 1 m). First-stage column members 8 having grooves 8a such as shaped steel are arranged on the foundation ground 2 at intervals. The support plate 9 is composed of a vertical portion and a horizontal portion, and the anchor hooking plate 10 is also composed of a vertical portion and a horizontal portion.
A hole for inserting the hook portion 7 is provided. The other end of the connecting member 11 is bolted to the horizontal portion of the support plate 9 and connected to the upstream foundation beam 7.

The two ends of the thinned wood 6 are connected to each other as shown in FIGS.
As shown in (A), the groove portions 8a of the adjacent column members 8, 8,
8a, and stacked substantially horizontally to a height substantially equal to the height of the first-stage short steel sheet pile 5 'on the upstream side, and FIG.
As shown in (B), the first-stage bulging material 16 is joined to the position near the height, that is, the horizontal portion of the anchor hooking plate 10 provided at the intermediate portion of the column member 8 with the bolt 12. Therefore, the wall can be formed by stacking the thinned materials 6 approximately horizontally by simply inserting the both ends of the thinned materials 6 into the grooves 8a, 8a of the adjacent pillars 8, 8, respectively. Easy to shape. Moreover, the thinned wood 6
Can be easily determined, and the construction work is simple. Therefore, work efficiency can be improved, which contributes to cost reduction.

After that, the first-stage concrete 4 is poured to the vicinity of the upper end of the first-stage short steel sheet pile 5 ′ on the upstream side, and the upper portion of the concrete 4 is compacted by a vibrating roller or the like. . Before the concrete 4 develops strength, the hook portion of the anchor member 17 is inserted into the hole of the vertical portion of the anchor hooking plate 10, and the anchor member 17 is placed (or laid down) on the top end of the concrete 4. Install in a substantially horizontal direction. Then, the first concrete 4 is cured until the concrete 4 exhibits the strength, and the first step of constructing the sabo dam 1 is completed.

In the first step, in the outer wall material 3 on the upstream side, the foundation beam 7 connected to the support plate 9 on the downstream side by the linking material 11 and the column 1 supported by the support material 15 are provided.
Each of the steel sheet piles 5 and 5 'serves to support the steel sheet piles 5 and 5', and furthermore, the rigidity of the steel sheet piles 5 and 5 'itself, and the joining strength between the adjacent steel sheet piles 5 and 5'. However, it exhibits the strength to withstand the concrete pressure when the concrete 4 is cast.

On the other hand, in the downstream outer wall member 3, the support plate 9 connected to the upstream foundation beam 7 by the linking member 11 and the belly raising member 16 form the column member 8 into which the thinning material 6 is inserted.
In addition, the rigidity of the pillar 8 and the thinned wood 6 themselves exerts a strength to withstand the concrete pressure when the concrete 4 is cast.

Therefore, there is no need to reinforce the upstream and downstream outer wall members 3, 3 by connecting them with connecting members such as tie rods. A crusher run is used as the aggregate of the concrete 4 (the invention according to claim 5). The crusher run is crushed stone for roads used for roadbed materials of roads and the like. Specifically, crushed stone that is used as it is without sieving after crushing with a crusher,
It is available at low cost anywhere in the country. Therefore, material procurement can be easily performed, and cost reduction and work efficiency can be improved.

FIG. 7 shows a state in which the second step of constructing the sabo dam 1 has been completed.

As shown in FIG. 8, on the upstream outer wall material 3, a steel sheet pile 5 having a module length is joined and erected above the shortest steel sheet pile 5 'at the first stage on the upstream side. 5
Is joined to the second-stage belly-raising material 16 with the bolts 12. In this case, the support 14 is sandwiched between the inner surface of the first-stage tall steel sheet pile 5 and the belly-raising member 16.

As the outer wall material 3 on the downstream side, the thinned wood 6 is set to a height almost equal to the height of the tall steel sheet pile 5 on the upstream side, that is, almost horizontally to the vicinity of the upper end of the column material 8 on the first stage. Thinned wood 6
Are stacked (see FIG. 7). In the case of the present embodiment, the support plate 9 of the second-stage pillar 8 is joined to a position near the height, that is, the anchor hooking plate 10 provided at the upper end of the pillar 8. The buckling material is not provided on the anchor hooking plate 10.

Thereafter, the second-stage concrete 4 is cast near the upper end of the tall steel sheet pile 5 at the first stage on the upstream side, and the above-described striking is performed by a vibrating roller or the like in substantially the same manner as in the first step. The concrete 4 is compacted. Before the concrete 4 develops the strength, the hook portion of the anchor member 17 is inserted into the hole of the anchor hooking plate 10 on the downstream side and the hole previously formed in the second-stage belly-raising member 16 on the upstream side, The anchor member 17 is attached to the top end of the concrete 4 (or laid down) in a substantially horizontal direction. The second step of curing the second-stage concrete 4 until the concrete 4 develops strength and constructing the sabo dam 1 is completed.

In the second step, the strength and rigidity of each member in which the first-stage concrete 4 has already developed and integrated, and the anchor material embedded and integrated in the second-stage concrete 4 17, the rigidity of the second-stage steel sheet pile 5 itself on the upstream side, the joining strength between the adjacent steel sheet piles 5, 5, and the rigidity of the column material 8 and the thinned material 6 itself on the downstream side It has sufficient strength to withstand the casting pressure and has no problem.

FIG. 11 shows a state in which the third step of constructing the sabo dam 1 has been completed.

In the upstream outer wall material 3, although not shown, a steel sheet pile 5 having a module length is joined and erected above the tall steel sheet pile 5 in the first stage, and the steel sheet pile 5 in the second stage is set up. Is joined with the third-stage belly-raising material 16 and the bolt 12.

In the outer wall material 3 on the downstream side, a second column member 8 is added above the first column member 8. In this case, the second-stage upset member 16 is installed on the support plate 9 provided at the lower end of the second-stage column member 8. Specifically, FIG.
As shown in (A) and (B), the horizontal part of the anchor hooking plate 10, the horizontal part of the support plate 9, and the belly material 16 are joined by a common bolt 12.

Then, the thinned wood 6 is stacked substantially horizontally to a height almost equal to the height of the second-stage steel sheet pile 5, and the height of the second-stage short steel sheet pile 5 is almost equal to that of the second-stage short steel sheet pile 5. The third-stage belly-raising member 16 is joined to the horizontal portion of the anchor hooking plate 10 provided at the intermediate portion of the column member 8 with the bolt 12.

Thereafter, the third-stage concrete 4 is poured to the vicinity of the upper end of the second-stage short steel sheet pile 5 on the upstream side, and substantially the same as in the second step. Rolling, mounting of the anchor member 17 and curing of the cast concrete 4 are performed, and the third step of constructing the sabo dam 1 is completed.

In the third step, as in the second step, a strength sufficient to withstand the casting pressure of the concrete 4 is exhibited, and there is no problem.

Hereinafter, the steel sheet piles 5 on the upstream side are joined and erected,
Attach the bulging material 16 and the column material 8 on the downstream side.
Are added, the thinning material 6 is piled up, and
The steps of installing the concrete 4, casting and rolling the concrete 4, attaching the anchor material 17, and curing the cast concrete 4 are repeated up to the height of the sabo dam 1.

Accordingly, there is no need to perform a work for securing a large rigidity and strength to the formwork structure in order to prevent the deformation of the outer wall material 3 as in the prior art, the number of members can be reduced, the assembling work is easy, and the work is easy. Efficiency can be improved. Also,
The cost can be reduced by reducing the number of members.

Moreover, the concrete 4 which has been cast in the previous process and has developed strength can be used as a scaffold, and the column 8 in the next process, the thinning material 6 can be stacked, the steel sheet pile 5 can be assembled, and so on. Since it is not necessary to separately construct a scaffold inside and outside the outer wall material 3, this contributes to facilitation of the assembling work.

As the outer wall material 3 on the downstream side, a thinning material 6
By using, it can be in harmony with nature and enhance the landscape.

Finally, as shown enlarged in FIG.
At the top of the steel sheet pile 5 which has reached the predetermined height, an embankment material 18 is provided.
To complete the sabo dam 1 (the invention according to claim 6). Therefore, it is possible to prevent running water or earth and sand flowing over the sabo dam 1 from directly colliding with and damaging the top of the outer wall material 3.

Sabo dam 1 constructed as described above
Is constructed not only by the column member 8 and the steel sheet pile 5 having the module length but also by the construction method according to the third aspect of the present invention. That is, a foundation beam 7 for determining the lower end position of the outer wall material 3 on the upstream side is arranged as an upward groove-shaped section material on the foundation ground 2, and the foundation beam 7 and the downstream column material described later are provided on the foundation beam 7. One end of the connecting member 11 connecting the supporting plate 9 to the supporting plate 9 is joined, and the lower end of the steel sheet pile 5 is inserted into the groove 7a of the foundation beam 7. The steel sheet pile 5 is supported by a support 14 supported by a support member 15 from the inside, and a horizontal bent member 16 is joined to the steel sheet pile 5.

A column having a groove 8a made of H-shaped steel, provided with a support plate 9 connected to the foundation beam 7 at the lower end by the connecting member 11, and provided with a plurality of anchor hooking plates 10 spaced apart upward. The members 8 are arranged at intervals on the foundation ground 2, and the other end of the tether 11 is joined to the support plate 9 and connected to the upstream foundation beam 7. Both ends of the thinned wood 6 are inserted into the grooves 8a of the adjacent column members 8 and stacked up to near the upper end of the short steel sheet pile 5 on the upstream side.
Then, the belly material 16 is joined to the anchor hooking plate 10.

Thereafter, the inside of both outer wall members 3, 3 is
Concrete 4 is cast to a height at which each of the outer wall materials 3 is self-supporting, and the upper portion of the cast concrete 4 is rolled by a vibrating roller or the like, and the upstream flaring material 16 and the downstream anchor catching plate are provided. Anchor material 17 is attached to at least one of 10 or belly material 16 and the cast concrete 4 is cured until the strength is developed.

Hereinafter, the construction of the outer wall members 3 and 3, the placing and compaction of the concrete 4, the attachment of the anchor members 17,
By repeating the step of curing the concrete 4 up to the height of the sabo dam 1, the sabo dam 1 as described in claim 1 can be constructed. The crusher run is also used for the aggregate of the concrete 4 of the sabo dam 1 (the invention according to claim 2).

In the above embodiment, the thinning material 6 and the steel sheet pile 5 are used as the outer wall material 3, but the invention is not limited to this. That is, the outer wall material 3 on the downstream side may be a long material like the thinned wood 6 and may be a steel member. In addition, the present invention can be similarly applied to a rectangular steel member. Furthermore, the outer wall material 3 on the upstream side
Can also be implemented with lightweight steel sheet piles or liner plates.

Further, in the above embodiment, the civil engineering structure is used as a sabo dam, but it can be suitably implemented as an earth retaining wall.

Further, in the above embodiment, the module length of the column member 8 is made substantially equal to the module length of the steel sheet pile 5, but this is not restrictive. That is, the module length of the pillar 8 is freely determined. In that case, according to the height of the column member 8, the steel sheet pile 5 on the upstream side is joined and erected, and
6, the steps of stacking the thinned wood 6 and attaching the belly raising material 16, casting the concrete 4 and rolling, attaching the anchor material 17, and curing the cast concrete 4. After the repetition, the second step is performed to construct the sabo dam 1 up to near the upper end of the first column 8. Further, the process shifts to a third step of adding the column member 8 at the next stage. Therefore, the column member 8 is made to be approximately 略 of the steel sheet pile 5.
When the module length is configured as a continuous length as one unit, consistency with the length of the steel sheet pile 5 on the upstream side is obtained, which contributes to facilitation of construction work.

[0055]

[Effects of the present invention] The civil engineering structure such as a sabo dam using the steel sheet pile and the thinned wood according to the inventions according to the first to sixth aspects and the construction method thereof have a plurality of heights at which the outer wall material can stand on its own. Since concrete is cast in different times, connecting members such as tie rods and frameworks are not required, and sabo dams can be constructed with fewer members and fewer man-hours, which can reduce costs and improve work efficiency. It is.

Further, in the outer wall material on the upstream side, a foundation beam is arranged at the lower end of the outer wall material (particularly, the first-stage steel sheet pile), and the steel sheet pile is supported by the columns supported by the support material. The lower end position and the inclination angle of the material can be easily determined.

On the other hand, in the outer wall material on the downstream side, the lower end position and the inclination angle of the outer wall material can be easily determined only by inserting both ends of the outer wall material, that is, the thinned material, into the groove of the pillar material. Therefore, the outer wall material on the upstream side and the downstream side can be easily standardized.

Further, by using a thinned wood or the like as the outer wall material on the downstream side, it is possible to enhance the landscape in harmony with nature.

[Brief description of the drawings]

FIG. 1 is an elevational view showing a sabo dam using a steel sheet pile, a thinned material and the like according to the present invention.

FIG. 2 is a perspective view showing a structure of an outer wall material on an upstream side.

FIG. 3 is a front view of the sabo dam viewed from the downstream side.

FIG. 4 is an elevation view showing a state where a first step of a construction method of a civil engineering structure such as a sabo dam using steel sheet pile and thinned wood has been completed.

FIG. 5: joining of the first-stage steel sheet piles, attachment of the material for raising the belly,
It is the front view which showed the process of placing concrete and attaching an anchor material.

FIG. 6A is an enlarged plan view showing the vicinity of an anchor hooking plate. B is an enlarged front view showing the vicinity of the anchor hooking plate.

FIG. 7 is an elevational view showing a state in which a second step of a construction method of a civil engineering structure such as a sabo dam using steel sheet pile and thinned wood has been completed.

FIG. 8 shows the joining of the second-stage steel sheet pile, the attachment of the belly-raising material,
It is the front view which showed the process of placing concrete and attaching an anchor material.

FIG. 9 is a sectional view taken along the line AA of FIG. 8;

FIG. 10 is a sectional view taken along the line BB of FIG. 8;

FIG. 11 is an elevation view showing a state in which a third step of a construction method of a civil engineering structure such as a sabo dam using steel sheet pile and thinned wood has been completed.

FIG. 12A is an enlarged plan view showing the vicinity of a joint between a support plate and an anchor hooking plate. B
FIG. 4 is an enlarged front view showing the vicinity of a joint between a support plate and an anchor hooking plate.

FIG. 13 is an enlarged view showing the top of the steel sheet pile on the upstream side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sabo dam 2 Foundation ground 3 Exterior wall material 4 Concrete 5 Steel sheet pile 6 Thinned material 7 Foundation beam 7a Groove 8 Column material 8a Groove 9 Support plate 10 Anchor hooking plate 11 Connecting material 14 Prop 15 Support material 16 Flap material 17 Anchor material 18 Embankment material

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kengo Hori 3-2-405 Takino, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Inventor Hiroyuki Handa 3-28 Shofudai, Higashimatsuyama-shi, Saitama

Claims (6)

[Claims] An outer wall material on the upstream side is made of steel sheet pile, an outer wall material on the downstream side is made of thinned wood or the like, and both outer wall materials are used as a concrete formwork, and concrete is poured into the inside thereof. And a foundation beam that determines the lower end position of the outer wall material on the upstream side is arranged as an upward grooved section material on the foundation ground, and the foundation beam includes One end of a connecting member that connects the beam and a support plate of a downstream column member described later is joined, and a lower end of a steel sheet pile is inserted into a groove of the foundation beam, and the steel sheet pile is A supporting member supported by a support material from the inside, a horizontal flared material is joined to the steel sheet pile, and an anchor material is attached to the flared material, and a foundation beam is provided by the connecting material. A support plate connected to the lower end is provided. A column member having grooves, such as H-section steel, provided with a plurality of anchor hooking plates spaced apart upward is arranged on the foundation ground at intervals, and the other end of the linking material is provided on the support plate. Part is joined and connected to the upstream foundation beam, and both ends of the thinning material, etc., which are the outer wall material on the downstream side, are inserted into the groove of the adjacent column material, and almost horizontally until near the upper end of the column material Stacked, the belly material is joined to the anchor hooking plate of the column material,
An anchor material is attached to at least one of the anchor hooking plate and the bulging material, and concrete is cast inside the both outer wall materials. Civil engineering structures such as sabo dams used. 2. The civil engineering structure such as a sabo dam using the steel sheet pile and the thinned wood according to claim 1, wherein the concrete aggregate is a crusher run. 3. The outer wall material on the upstream side is made of steel sheet pile, the outer wall material on the downstream side is made of thinned wood or the like, and both outer wall materials are used as a concrete formwork, and concrete is poured into the inside thereof. A method of constructing a civil engineering structure such as a sabo dam by arranging a foundation beam that determines the lower end position of the outer wall material on the upstream side as a groove-shaped cross section material facing upward on the foundation ground, and Joining one end of a linking material connecting a beam and a support plate of a downstream column member described below, and inserting a lower end of a steel sheet pile into a groove of the foundation beam; A supporting plate supported by a support material from above, and joining a horizontal flared material to the steel sheet pile, and a support plate connected to a foundation beam by the connecting material is provided at a lower end portion, and an interval is provided upward. H-shaped steel, etc. with multiple anchor hooking plates The column member having a groove, spaced placed on foundation ground, to the support plate,
Joining the other end of the joining material and connecting it to the upstream foundation beam; inserting both ends of the thinning material, which is the outer wall material on the downstream side, into the groove of the adjacent column material, Stacking up to the vicinity of the upper end of the low steel sheet pile, joining the buckling material to the anchor hooking plate, and placing concrete inside the both outer wall materials to a height at which each outer wall material is self-supporting, The upper part of the cast concrete is rolled with a vibrating roller or the like, and an anchor material is attached to at least one of the upstream flaring material and the downstream anchor hooking plate or the flaring material, and the poured concrete has strength. Curing until the manifestation of, and constructing the outer wall material, placing and compacting concrete, and attaching anchor material, and curing the concrete, the process of curing the concrete up to the height of the civil engineering structure A method for constructing civil engineering structures such as sabo dams using steel sheet piles and thinned wood, etc., comprising repeating the steps. 4. The outer wall material on the upstream side has a module length of about 1
A steel sheet pile processed to a length of / 2 module, the outer wall material on the downstream side is made of thinned wood, etc., and both outer wall materials are used as concrete formwork, and concrete is poured into the inside thereof to make a sabo dam. A method of constructing a civil engineering structure such as the above, wherein a foundation beam that determines the lower end position of the outer wall material on the upstream side is arranged on the foundation ground as a groove-shaped cross-section facing upward, and the foundation beam is referred to as the foundation beam later. Joining one end of a tie connecting the support plate of the downstream pillar to the base beam, at intervals in the longitudinal direction on the foundation beam, the pillar at a constant inward inclination angle Standing, supporting each pillar with a support material from the inside, and alternately disposing the first-stage steel sheet pile processed into the above module length and approximately モ ジ ュ ー ル module length on the outside using the pillar as a guide. Joined to each under Forming the seam of each steel sheet pile in a staggered arrangement with a step difference in the vertical direction by inserting the steel sheet pile into the groove of the foundation beam, and attaching a flared material near the foundation beam of the first-stage short steel sheet pile. A support plate connected to the foundation beam by the connecting member is provided at a lower end portion, and an anchor hooking plate is provided at substantially the same height as the steel sheet pile on the upstream side, and is processed into a module length.
A step of arranging first-stage column members having grooves, such as mold steel, on the foundation ground with a space therebetween, joining the other end of the linking material to the support plate, and connecting to the upstream-side foundation beam. Inserting both ends of the thinning material, etc., which is the outer wall material on the downstream side, into the grooves of the adjacent column members, respectively, and stacking them substantially horizontally to a height almost equal to the height of the first-stage short steel sheet pile on the upstream side, Attaching the buckling material to the anchor hooking plate provided in the vicinity of the sea, and placing the first-stage concrete near the upper end of the first-stage short steel sheet pile on the upstream side, and placing the concrete The upper part of the concrete is rolled with a vibrating roller or the like, and the anchor material is horizontally attached to at least one of the anchor hooking plate or the belly material and placed on the top of the cast concrete, and cured until the concrete develops strength. And joining the steel sheet pile of the module length above the shortest steel sheet pile of the first stage on the upstream side, and bolting the second-stage flared material to the center of the steel sheet pile. The thinning material or the like, which is the outer wall material on the downstream side, is stacked substantially horizontally to a height substantially equal to the height of the tall steel sheet pile of the first stage on the upstream side. Attachment stage, The second stage concrete is cast to near the upper end of the first stage tall steel sheet pile on the upstream side and compacted, and the downstream side provided at a height substantially equal to the tall steel sheet pile Anchor hooking plate and an anchor material is horizontally attached to the second-stage uplifting material on the upstream side and placed on the top of the cast concrete, and the concrete is cured until it develops strength. Steel sheet pile as the outer wall material on the upstream side Joining and standing, attaching the bulging material, adding the pillar material on the downstream side, stacking thinning materials, installing the bulging material, casting concrete, rolling and installing the anchor material And a step of curing the cast concrete to the height of the civil engineering structure, the method comprising the steps of: constructing a civil engineering structure such as a sabo dam using steel sheet pile and thinned wood. 5. The construction method of a civil engineering structure such as a sabo dam using a steel sheet pile and a thinned wood material according to claim 3, wherein the concrete aggregate is a crusher run. 6. A sabo dam using a steel sheet pile and a thinned wood material according to any one of claims 3 to 5, wherein a bank crown material is provided on the top of the steel sheet pile on the upstream side. Construction method of civil engineering structure.