JPH073750A - Dam - Google Patents

Abstract

PURPOSE:To enhance the efficiency of work and to reduce the dangers of a working environment under bad conditions of construction work and to reconstruct an existing terrain to configuration and size that match various other geographical and geological conditions. CONSTITUTION:Each ground pile 17-31 is integrated with each deep foundation pile 1-15 and is formed by a structure comprising formwork and reinforced concrete, as in the case of the deep foundation piles 1-15. Each beam 32-49 is composed in roughly the same manner as the deep foundation pipes 1-15 and the ground piles 17-31, and has a structure capable of withstanding any external force. The ground piles 17-31 are connected together by the beams 32-49 whereby excellent load resistance against any external force is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to dams, and particularly to sediment-related disasters such as debris flows, which are likely to occur in mountainous areas with many steep terrain, or in the edge of a hilly area with many complex terrain.
The present invention relates to a dam suitable for protecting a village from flood damage caused by concentrated heavy rain, flood damage of small and medium rivers, and the like.

[0002]

2. Description of the Related Art This type of dam is generally a relatively small-scale structure, unlike a large-scale dam provided for high-power hydroelectric power generation and irrigation projects over a wide area. In other words, the dam is capable of carrying out large-scale sediment movements that induce sediment-related disasters, while preserving existing terrain as much as possible, in mountainous areas such as steep and complicated terrain, which are upstream areas of rivers. It is provided to suppress. When installing the dam, as described above, it is generally not necessary to perform a large-scale construction work on the existing topography. Therefore, the road leading to the construction site is unsuitable as a road used to carry in various materials, the construction site is particularly steep, or the terrain is complicated and complicated, or Even if there are various adverse conditions when the construction is implemented, such as the fact that the construction site and the area around it are soft ground, the above dam will be constructed under these adverse conditions. Therefore, there is a problem that not only the work efficiency is lowered in various work processes, but also the worker must work in an extremely dangerous work environment.

Therefore, in view of such circumstances, a proposal regarding the above-mentioned dam has been conventionally made, and the dam according to the proposal has been put to practical use.

The dam according to the above-mentioned proposal is mainly composed of a steel connecting frame installed at the site and cobbles, crushed stones, etc. filled as filling materials in the accommodation space defined by the steel connecting frame. It consists of In the above structure, the steel connecting frame is composed of a frame (frame) and a beam made of a flexible rectangular steel pipe, a grating and other small members, and the steel connecting frame is manufactured in a factory or the like. After that, it has a complete prefabricated structure that can be assembled into a predetermined shape by the above-mentioned members carried into the site.

[0005]

By the way, in the conventional dam having the above-mentioned structure, it is possible to improve the work efficiency under the above-mentioned bad conditions and reduce the risk of the work environment.

[0006] However, the dam having the above structure is not subjected to foundation work such as concrete pouring and pile driving, and is filled with a material such as an external force due to earth pressure due to debris flow or soft ground. It has a structure (so-called gravity type) that can withstand the weight of the dam, which is mainly the weight of. However, since the steel connecting frame itself does not have much weight, the scale of the dam itself must be increased in order to make the dam a heavy structure.

[0007] In this way, if the size of the dam must be increased to a certain extent or more, when the site topography is complicated, the existing topography is preserved while the existing topography and other geographical and geological features are maintained. It will be very difficult to construct a dam with a shape and size that meets various conditions.

Therefore, the present invention has been made in consideration of the above circumstances, and an object thereof is to improve the work efficiency in various work processes for constructing a dam, and reduce the risk of the work environment. The purpose of the present invention is to provide a dam with a structure that can be constructed and that can be constructed in a shape and size suitable for existing geographical features and other geographical and geological conditions.

[0009]

To achieve the above object, the present invention provides a plurality of foundation piles formed to fill a plurality of holes excavated from the ground toward the ground at predetermined intervals, A plurality of ground piles that are integrally formed with each of these foundation piles and project from the respective foundation piles to the ground respectively, and in the area where each of these ground piles is projected, A plurality of beams formed to define a plurality of accommodation space portions together with each of the above-mentioned piles by connecting the above-mentioned piles, and a filling material filled in the plurality of accommodation space portions, Each foundation pile, each ground pile and each beam is made up of a formwork made by assembling multiple steel deep foundation construction materials and reinforced concrete formed in the internal space defined by this formwork. And a structure having Ri, wherein during filling materials were the crushed stone produced upon providing the respective structures, Kuriishi, or a structure is excavated soil.

[0010]

In the above structure, the plurality of ground piles are integrally formed with the plurality of foundation piles that are buried in the ground, and each foundation pile is projected above the ground. Similar to the foundation pile of, the formwork constructed by assembling the steel deep foundation construction material, and the structure made of reinforced concrete formed in the internal space defined by the formwork, Therefore, it is extremely solid as compared with a structure simply installed on the ground, and has excellent load resistance against external force, for example, earth pressure caused by debris flow or the like, or water pressure caused by running water. That is, each ground pile is different from the structure according to the related art, and not only its own weight but also the structure itself can sufficiently withstand an external force.

As described above, in order to realize a structure which is further excellent in load bearing mechanically by using each ground pile having a structure which is very rigid and has excellent load bearing ability alone, the present invention is ,
It was decided to connect the above ground piles with a plurality of beams having the same structure as the above ground piles. With the above structure,
For example, even if earth pressure such as debris flow or water pressure of running water is applied as an external force, it is possible to sufficiently withstand this external force.

In the present invention, in addition to the above-mentioned structure, further, in each of a plurality of accommodation spaces defined by each of the above-mentioned ground piles and each of the above-mentioned beams, foundation structures, ground piles, beams and other structures are provided. Since crushed stones, crushed stones, or leftover soil generated when installing is filled as a filling material, not only does it have a structure that is mechanically excellent in load bearing, but the self-weight used conventionally By making it heavy, it has become possible to realize a dam that also has the characteristics of a system that withstands external forces (so-called gravity dam).

[0013] In addition, since the steel deep foundation method materials such as foundation piles, ground piles, and beam formwork are generally stipulated in size and weight that are easy to carry, a dam is installed in the carrying work itself. There are almost no restrictions on geographical conditions such as the topography of the place, and the risk of work can be reduced. By using the deep foundation construction method, a plurality of steel deep foundation construction materials that are easy to carry are assembled along the inner wall surface of each hole to form a formwork, and the reinforced concrete is placed in the internal space defined by the formwork. Each foundation pile can be formed by forming a structure consisting of. Regarding the formation process of each ground pile and each beam, there is a slight difference in the formwork forming work (especially in the case of the ground pile, the formwork is not formed in the ground), but it is different from the above-mentioned formation process of the foundation pile. It is almost the same. For each beam, like the ground pile,
It is also possible to install a foundation structure in the ground and start up from this foundation structure. Moreover, since it is not necessary to use a large-scale structure such as a so-called gravity type, it is possible to design a structure that matches the topography of the site and the strength of the ground.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway side view showing the structure of a dam according to an embodiment of the present invention. As shown in FIG. 1, the weir according to one embodiment of the present invention includes a plurality of foundation piles, namely, deep foundation piles 1, 3, 5, 7, 9, 9, 11, 13, 15, and
Multiple ground piles 17, 19, 21, 23, 25, 27, 2
9, 31 and a plurality of beams 32, 33, 35, 37, 39,
41, 43, 45, 47, 49, a plurality of accommodation space parts defined by the plurality of above-mentioned ground piles 17-31 and a plurality of beams 32-49 (reference numerals 50, 5 in FIGS. 2 and 3).
1, 53) and a large amount of crushed stone (or rubble) 55 filled as a filling material. Note that, in FIG. 1, for convenience of illustration, the plurality of deep foundation piles described above,
Of the plurality of ground piles and the plurality of beams, only the deep foundation piles associated with reference numerals 1 and 3, the ground piles associated with reference numerals 17 and 19 and the beam associated with reference numeral 32 are shown.

The above structure will be described in more detail below. That is, each of the above-mentioned deep foundation piles 1 to 15 is provided in a plurality of holes such as 57 and 59, which are excavated from the ground 65 at a predetermined interval toward the ground substantially vertically, and are generally used. Formwork 1a to 15a formed by assembling a large amount of steel deep foundation work material 68 used in the deep foundation work method, which is one of the construction methods in various civil engineering works, and the internal space defined by these formworks 1a to 15a. It is a structure provided with the structure (it shows in FIG. 2 and the code | symbol 1b-15b) which consists of formed reinforced concrete. In each of the molds 1a to 15a, a large amount of steel deep foundation material 68 is formed by the deep foundation method (in this embodiment, at least eight holes such as 57 and 59 are drilled). ) Is assembled and formed along the inner peripheral surface. In this embodiment, as is clear with reference to FIG. 2 which is a plan view of the dam according to the present embodiment, since each of the plurality of holes has a circular cross section, It is assembled in a cylindrical shape.

Examples of the above-mentioned steel deep foundation method material 68 include a liner plate, an angle deep foundation ring, a steel segment, and a corrugated pipe.
When forming the formwork 1a to 15a of the deep foundation pile according to the present embodiment, for example, a liner plate curved with a predetermined curvature with a weight of about 20 to 30 kg per sheet is adopted. The liner plate is used as a material particularly suitable for a foundation pile installed in a mountain area. In addition, the structures 1b to 1 in the respective molds 1a to 15a.
5b is a plurality of reinforcing bars arranged in the internal space defined by the molds 1a to 15a, and the molds 1a.
˜15a and the concrete material filled in the voids between the plurality of rebars arranged (the reference numeral 68 indicates one steel for convenience of illustration). I decided to attach it only to the deep foundation method material).

The above ground piles 17 to 31 are integrally formed with the above-mentioned deep foundation piles 1 to 15 respectively, and after the formation process of each of these deep foundation piles 1 to 15 is completed, the respective deep foundation piles are formed. The piles 1 to 15 were projected on the ground,
It has the same structure as each of the deep foundation piles 1 to 15 described above.
That is, each of the above-mentioned ground piles 17 to 31 is made of formwork 17a to 31a formed by assembling a large amount of steel deep foundation construction material 68, and reinforced concrete formed in the internal space defined by the formwork 17a to 31a. Structure (Fig. 2, reference numeral 17b)
31b). Each of the molds 17a to 31a is formed in a cylindrical shape, as is clear from FIG. 2 and the contents described above. Also, regarding each of the structures 17b to 31b,
Since 31a is formed in a cylindrical shape, it is formed in a cylindrical shape. The same liner plate as in the deep foundation piles 1 to 15 is used for the steel deep foundation method material 68 described above.

Form frames 17a-3 of the above-mentioned each ground pile 17-31
A large number of drain holes 63 are opened on the side surface of the la 1a as shown in the drawing, and hot dip galvanizing is applied to prevent rust. (Note that the reference numeral 63 is attached to only one drain hole for the sake of illustration). Further, as shown by the reference numeral 67, the joint portion between the side surface portion of each of the above-mentioned ground piles 17 to 31 and the ground surface 65 is finished with a concrete material. Further, as indicated by reference numeral 51, the top end of each of the above-mentioned ground piles 17 to 31 is top-finished with a concrete material having a predetermined thickness. As will be described in detail later, the top end finishing with this concrete material is also applied to the upper portions of the beams 32 to 49 in the same manner as in the above ground piles 17 to 31 (note that reference numeral 68 indicates Is attached to only one steel deep foundation method material for the sake of illustration).

The beams 32 to 49 are respectively mounted on the ground piles 17 to 17.
In the area where 31 is projected, a plurality of accommodation space parts 50, 51, as shown in FIG. It is formed to define 53. That is, each of the beams 32 to 49 is composed of a mold 32a to 49a formed by assembling a large amount of steel deep foundation construction material 68, and a reinforced concrete formed in an internal space defined by the mold 32a to 49a. Structure (Fig. 2, symbol 3)
2b to 49b)). Each of the molds 32a to 49a is formed in a shape as shown in FIG. 2 as viewed from above, and in this embodiment, it is used to form each of the molds 32a to 49a. The straight steel material of the liner plate is used for the steel deep foundation construction material 68 to be formed. Each steel deep foundation construction material 68
The weight of the linear member of the liner plate is also set to about 20 to 30 kg. Since each of the structures 32b to 49b is also formed in the internal space defined by each of the molds 32a to 49a, the shape viewed from above is similar to that of each of the molds 32a to 49a in FIG. It will be formed in the manner as shown.

Form frames 32a-49a of the respective beams 32-49.
As shown in the figure, a large number of water drain holes 63 are opened in the side surface of the sheet, and hot-dip galvanizing is applied to prevent rusting.
It was decided to attach it only to the drainage hole of each piece. ) In addition, each of the above beams 3
The joints between the side surfaces 2 to 49 and the ground 65 are also finished by the concrete material as indicated by the reference numeral 67 (note that the reference numeral 67 corresponds to the beams 32 to 49). Is not given because the drawing is congested). Further, the reference numeral 51 is also provided on the upper portion of each of the beams 32-49.
As shown in, the top end is finished with a concrete material having a predetermined thickness. The top end finishing with this concrete material is performed in the same manner as in the above-mentioned each ground pile 17 to 31 (note that, for the reference numeral 68, only one steel deep foundation method material is shown for convenience of illustration. Decided to attach).

Each deep foundation pile 1 formed in the above-mentioned manner
~ 15, each ground pile 17-31, each beam 32-49,
By each ground pile 17-31 and each beam 32-49, FIG.
As shown in, a plurality of accommodating space portions 50, 51, 53 having a substantially rectangular shape are defined.

Each accommodation space 5 defined in this way
0, 51, 53, each of the deep foundation piles 1 to 15, each of the above ground piles 17 to 31, and each of the beams 32 to 49 generated crushed stones, rubble stones, or residual soil (in the present embodiment, Crushed stone or crushed stone) is filled as a filling material as indicated by reference numeral 55.

The dam according to this embodiment is assembled in the manner as shown in FIG. 3 through the various steps as described above. In addition, in FIG. 3, FIG.
The same components as those shown in are denoted by the same reference numerals.

In the above structure, each ground pile 17 to 3
1 is each deep foundation pile 1-1 which is buried in the ground
5 integrated with each deep foundation pile 1 to 15 to the ground 65
It is made to project on each of the deep foundation piles 1 to 15
Form 17a to 31a formed by assembling a plurality of steel deep foundation construction materials 68 in the same manner as described above, and structures 17b to 31b made of reinforced concrete formed in the internal space defined by these form 17a to 31a, It is constituted by a structure having. Therefore, it is much more rigid than a conventional structure of this type, which is simply installed on the ground, and has a withstand load against external pressure, for example, earth pressure caused by debris flow or water pressure caused by running water. It has excellent properties. That is, each of the ground piles 17 to 31 does not have its own weight, but the structure itself can sufficiently withstand an external force.

As described above, in order to realize a structure which is further excellent in load bearing in terms of dynamics, by using the above ground piles 17 to 31 each having a structure which is very solid and excellent in load bearing alone,
In this embodiment, the ground piles 17-31 are connected by a plurality of beams 32-49 having the same structure as the ground piles 17-31. With the above structure, even if the earth pressure such as debris flow or the water pressure of running water is applied as an external force,
It can withstand this external force sufficiently. That is, since it is not a mere gravity type structure, it can sufficiently withstand an external force without increasing the size of the structure to a certain extent.

In the dam according to the present embodiment, in addition to the above structure, each of the above ground piles 17 to 31 and each of the beams 3 is further added.
Each of the accommodation space portions 50, 5 defined by 2 to 49
1,53, including deep foundation piles 1-15, ground piles 17-3
Since crushed stones, crushed stones and the like generated when providing each structure such as 1, beams 32 to 49 are filled as the filling material 55, the structure is not only mechanically excellent in load bearing capacity. , It also has the features of a dam called a gravity type that can withstand external forces by making its own weight heavy.

In addition to the deep foundation piles 1 to 15, the ground pile 17
~ 31, steel deep foundation construction material 68 to be the formwork of beams 32-49
Is usually a size and weight (20-30K
Since the standard is set in g), the transportation work itself,
There are almost no restrictions on geographical conditions such as the topography of the location where the dam is installed.
Also, even under adverse conditions such as complex or steep terrain at the site, or soft ground, unlike the gravity-type dam, it is not necessary to make the scale larger than a certain extent, so existing terrain Each ground pile 17-31 while conserving
The shape and size of the dam can be adapted to the existing topography and other geographical and geological conditions such as the shape and the length of the root. The degree of danger can be reduced in various work processes. Further, in the dam according to the present embodiment, the rainwater and the like that have penetrated into the dam are shown in FIGS. 1 to 3 via a draining mechanism (not shown) formed from the filled filling material 55 to each structure. The water is drained to the outside through the drain holes 63 shown.

The contents described above relate to a dam according to an embodiment of the present invention, and the present invention is not limited to the above contents.

For example, as for each of the beams 32 to 49, substantially the same as in the case of each of the ground piles 17 to 31, it is assumed that each of the beams 32 to 49 is integrally formed with a foundation structure such as a deep foundation pile and is erected from these foundation structures. If it is raised, a structure that is mechanically superior in load resistance can be obtained. Further, in the present embodiment, as shown in FIG. 1, the holes 57, 59, etc. for forming the deep foundation pile 1-15 are to be excavated so as to be substantially perpendicular to the ground 65. The angle formed by each hole with respect to the ground 65 can be set to the most suitable angle according to the situation at the site. Also regarding the accommodation space portions 50 to 53 defined by the ground piles 17 to 31 and the beams 32 to 49,
As shown in FIG. 2, the shape is not necessarily limited to a rectangular shape, and a square shape as shown in FIG.
The layout patterns of the ground piles and the beams, which can be formed in the shapes shown in FIGS. 4, 6, and 7, respectively, do not necessarily have to be so-called “flush”. The arrangement pattern shown in can be used. Furthermore, the shape of each beam viewed from above can also be set as shown in FIGS. The steel deep foundation construction material 68 is not limited to the liner plate, either.

4 to 7, reference numerals 71a to 71a.
Reference numeral 71d indicates a ground pile, and reference numerals 73a to 73d indicate beams.

[0032]

As described above, according to the present invention,
A plurality of deep foundation piles are used in a structure having a formwork formed by assembling a plurality of steel deep foundation construction materials and a structure made of reinforced concrete formed in the internal space defined by the formwork. , Multiple ground piles and multiple beams,
In addition, since it was decided to fill the crushed stones, rubble stones, residual soil, etc., which were generated when the above-mentioned structures were provided, into the plurality of accommodation space parts defined by the plurality of ground piles and the plurality of beams as the filling material, It is possible to improve the work efficiency in various work processes for building a building, reduce the risk of the work environment, and match existing terrain with other geographical and geological conditions. It is possible to provide a dam with a configuration that can be constructed in shape and size.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing the structure of a dam according to an embodiment of the present invention.

FIG. 2 is a plan view showing a dam having the configuration shown in FIG.

FIG. 3 is a perspective view showing a structure of a dam according to an embodiment of the present invention.

FIG. 4 is a plan view showing a modified example according to the present invention.

FIG. 5 is a plan view showing another modified example according to the present invention.

FIG. 6 is a plan view showing still another modified example according to the present invention.

FIG. 7 is a plan view showing still another modified example according to the present invention.

[Explanation of symbols]

1,3,5,7,9,11,13,15 Deep foundation pile 1a, 3a, 5a, 7a, 9a, 11a, 13a, 15
a Formwork for deep foundation piles 1b, 3b, 5b, 7b, 9b, 11b, 13b, 15
b Structures made of reinforced concrete 17, 19, 21, 23, 25, 27, 29, 31 Ground piles 17a, 19a, 21a, 23a, 25a, 27a, 2
9a, 31a Formwork for piles on the ground 17b, 19b, 21b, 23b, 25b, 27b, 2
9b, 31b Structure made of reinforced concrete 32, 33, 35, 37, 39, 41, 43, 45, 4
7,49 Beams 32a, 33a, 35a, 37a, 39a, 41a, 4
3a, 45a, 47a, 49a Beam form 32b, 33b, 35b, 37b, 39b, 41b, 4
3b, 45b, 47b, 49b Structures made of reinforced concrete 50, 51, 53 Storage space 55 Filling material 57, 59 Holes 65 Ground

Claims (2)

[Claims] 1. A plurality of foundation piles formed to fill a plurality of holes excavated from the ground toward the ground at a predetermined interval, and a foundation pile of each of these foundation piles, which is integrally formed with each of these foundation piles. A plurality of ground piles projecting from the piles to the ground respectively, and a plurality of ground piles are connected together by connecting the respective ground piles in the area where each of these ground piles is projected. A plurality of beams formed to define the accommodation space portion, and a filling material filled in the plurality of accommodation space portions, wherein each of the foundation piles, each of the ground piles, and each of the beams is Is also a structure having a formwork formed by assembling a plurality of steel deep foundation construction materials, and a structure made of reinforced concrete formed in the internal space defined by the formwork, The material is used when the above-mentioned structures are provided. A dam that is characterized by crushed stones, crushed stones, or leftover soil. 2. The dam according to claim 1, wherein the ground pile and the beam are provided with a plurality of drainage holes, and the top of the ground pile and the beam is made of concrete of a predetermined thickness at the top end. Finishing is applied to the side surface of the formwork that defines the ground piles and beams, and a galvanized finish is applied to the side surfaces of the formwork that defines the ground piles and beams. The dam is characterized in that the joint between the side surface and the ground is finished with concrete material.