JPH1075849A - Sand guard bench and retaining wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sand guard bench having functions to collect and drain water in strata with simple construction and execution. SOLUTION: A plurality of retaining walls having the same specification are erected at proper intervals vertically in multiple parallel stages and subjected to the sand guard execution in the rear surface of the retaining wall 11, so that water-proof earth and sand layers 51 are stepwise formed on a water-proof sheet 41 to provide a sand guard bench. Also, a plurality of drain ports 12 are formed in the lower part of the retaining wall in the longitudinal direction, and a drain pipe 21 is inserted in one of drain ports 12. The drain pipe 21 on the respective stages are connected to each other, and water collecting pipes are inserted in all other drain ports 12 with respect to the retaining walls 11 of the respective stages. These water collecting pipes are connected through a communicating pipe to the drain pipe. All drain pipes, water collecting pipes and communicating pipes are embedded in the earth and sand layer 51, while the height of the earth and sand layers 51 on the respective stages are approximately equalized to the upper end of the retaining wall 11 on the same stage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining bench and a retaining wall for installing the same.

[0002]

2. Description of the Related Art

In general, it is desired to provide multi-stage seats on flat ground, sloping ground and the like in the vicinity of an athletic field and the like. However, in the related art, there are problems that the structure of the seats is complicated, that the construction takes a long time, and that the construction cost is high.

[0003] Accordingly, an object of the present invention is to provide an earth retaining bench which can be used as a multi-stage seat, has a function of collecting and draining water in the stratum, and has a simple structure and construction. It is to provide a low-cost retaining wall.

[0004]

The retaining bench according to the first invention (claim 1) has a plurality of retaining walls erected on the ground in parallel at appropriate intervals from each other, and the rear surface of these retaining walls is arranged on the rear surface of these retaining walls. A soil retaining bench formed by forming earth and sand layers in steps by performing earth retaining, and a plurality of drain holes are formed in a longitudinal direction below a retaining wall of each step, and one of the drain holes is formed. A drain pipe is inserted to connect the drain pipes of each stage to each other, and a water collecting pipe is inserted into at least one of the other drain ports in the retaining wall of each step, and the drain pipe of the same stage is drained through the communication pipe. Connected to the pipes, buried the drainage pipes, water collection pipes and communication pipes of each step in the soil layer, and made the height of the soil layer of each step almost the same as the upper end of the retaining wall of the same step It is characterized by.

In the present invention, the water collecting pipe and the communication pipe in the first invention can be omitted by disposing a drain pipe having a structure also serving as a water collecting pipe. In this case, it is preferable that this drain pipe is inserted through all the plurality of drain ports of the retaining wall.

In other words, the earth retaining bench according to the second aspect of the present invention has a plurality of retaining walls erected in parallel on the ground at appropriate intervals with respect to each other, and the earth retaining layer is formed on the rear surface of these retaining walls to form the earth and sand layer. An earth retaining bench formed in a step shape, wherein a plurality of drain ports are formed in a longitudinal direction below a retaining wall of each step, and a drain pipe having a slit-shaped water collecting hole formed in an appropriate place is drained. It is inserted into at least one of the mouths, connects the corresponding drainage pipes of each stage to each other, surrounds the drainage hole forming part of the drainage pipe with a crushed stone layer or a rubble stone layer, and fills the periphery with a soil layer. By doing so, all the drain pipes are buried in the earth and sand layer, and the height of the earth and sand layer in each step is made substantially the same as the upper end of the retaining wall in the same step.

The earth and sand layer is preferably formed on a waterproof sheet laid on the ground. Further, it is desirable that the retaining wall is placed on a base made of a crushed stone layer or a split chestnut layer, and staples made of a corrosion-resistant metal are driven into the base, thereby fixing the lower end of the retaining wall to the base. A concrete base plate can be laid on the earth and sand layer to serve as a base.

[0008] As the retaining wall of the first invention and the second invention,
It is preferable to use the following. That is, this retaining wall is formed of a plate-shaped member made of a hard and corrosion-resistant material, and a plurality of plate-shaped stays are provided on the front side in the vertical direction and at appropriate intervals in the longitudinal direction of the retaining wall, and the retaining wall is provided. On the rear side to be performed, it is possible to form a compartment by providing a plurality of plate-like stays extending from the substantially upper end portion to the substantially lower end portion of the retaining wall at appropriate intervals in the longitudinal direction of the retaining wall. desirable. In the case of using the retaining wall having such a structure, it is preferable that in the earth retaining bench according to the first invention, the compartment is filled with crushed stone or split chestnut. In the soil retaining bench according to the second invention, it is desirable that the compartment be filled with earth and sand.

In the retaining wall having the above-described structure, bolt-through holes are formed in the plate-like stays at both ends on the front side, and the ends of the two retaining walls are abutted to connect the bolt-through holes. , Insert a bolt into this communication hole and fix it with a nut.
It is preferable that the retaining walls are connected to each other to form a long object, and the long retaining wall enables a large-sized seat to be constructed.

The retaining wall according to the first and second inventions preferably has the following structure. That is, the retaining wall of the present invention (claim 9) is a retaining wall type retaining wall for constituting the earth retaining bench, and is formed by integrally molding hard plastic, and a drain port is provided at a lower portion of the retaining wall. A plurality of plate-shaped stays are formed in the longitudinal direction, and a plurality of plate-shaped stays are
Provided at appropriate intervals in the longitudinal direction of the retaining wall, a plurality of plate-like stays extending from the substantially upper end to the substantially lower end of the retaining wall are provided on the rear side where the retaining wall is provided, and the longitudinal direction of the retaining wall is provided. It is characterized in that the compartments are formed by providing them at appropriate intervals in the direction. In this retaining wall, bolt-through holes are formed in plate-like stays at both ends on the front side, and when the ends of a plurality of retaining walls are abutted against each other, the bolt-through holes are connected to each other. preferable. This allows
The long retaining wall can be configured.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. Example 1 FIG. 1 is a schematic cross-sectional view of an earth retaining bench, and FIG. 2 is a plan view thereof and is an explanatory diagram of piping of a water collecting pipe, a communication pipe, and a drain pipe. 3 is a partially enlarged view of FIG. 2, FIG. 4 is a sectional view taken along line AA of FIG. 3, and FIG. 5 is a sectional view taken along line BB of FIG. FIG. 6 is an explanatory view of the construction procedure of the drain pipe, FIG. 7 is a front view of the retaining wall (showing the front side), FIG. 8 is a rear view of the retaining wall (showing the rear side), FIG. 9 is a plan view of the retaining wall, FIG. 10 is a right side view of FIG. FIG. 11 is a front view showing a connecting portion between the retaining walls. FIG. 12 shows FIG.
FIG. 2 is a rear view of FIG. 1 and is an explanatory view showing a retaining wall fixing point on the split chestnut layer. FIGS. 13A and 13B show double fold washers for connecting retaining walls to each other. FIG. 13A is a plan view, FIG. 13B is a front view, and FIG. 13C is a right side view of FIG. FIG. 14 is a plan view of the retaining wall after the cover plate is attached, and FIG.
It is a C line sectional view.

As shown in FIGS. 1 and 2, a retaining bench of this embodiment includes a plurality of retaining walls 11 shown in FIGS.
The upper and lower tiers are erected in parallel with the upper and lower tiers at appropriate intervals, and the earth and sand layer 51 is formed in a stair-like form by performing earth retaining work on the rear surface of the retaining wall 11. It is. The retaining wall 11 is a member for a retaining wall and also serves as a seat. The retaining wall height of each step (the height of the retaining wall upper end portion with respect to the ground of the retaining bench) is: Adults can sit comfortably on the retaining wall and place their feet on the ground. As shown in FIGS. 1 and 4, the earth and sand layer 51 is formed on a waterproof sheet 41 laid on the ground 10 (before construction of a retaining bench). In addition,
The details of the construction of the embankment will be described later. As the waterproof sheet 41, a sheet made of polyvinylidene chloride can be adopted.

As shown in FIGS. 4 and 12, the retaining wall 11 is placed on a base 42 made of a crushed stone layer or a split chestnut layer, and then a staple 46 (U-shaped clasp) made of a corrosion-resistant metal is used as a base. By being driven into the base 42, the lower end of the retaining wall 11 is fixed to the base 42. In FIG. 3, 45
Is a through hole into which the staple 46 is inserted. The retaining wall 11 is a retaining wall type retaining wall, and is formed by integrally molding a hard plastic such as a polyolefin resin or a hard polyvinyl chloride resin. That is, in this retaining wall 11,
A plurality of drainage ports 12 are formed in the lower part along the longitudinal direction of the retaining wall, and a plurality of plate-like stays 13 are vertically arranged on the front side,
And, provided at appropriate intervals in the longitudinal direction of the retaining wall, a plurality of plate-like stays 14 extending from the substantially upper end to the substantially lower end of the retaining wall are provided on the rear side where the retaining wall is provided. The compartments 15 are formed by providing them at appropriate intervals in the longitudinal direction.

As shown in FIG. 7, in the retaining wall 11, plate-like stays 13 at both ends on the front side have bolt through holes 13 formed therein.
a, the ends of the two retaining walls are abutted against each other to allow the bolt through holes 13a to communicate with each other, as shown in FIG.
By inserting a bolt 43 into this communication hole and fixing it with a nut 44, a long object is obtained in which the retaining walls are connected to each other. 14 and 15 are provided at the upper end of the long retaining wall.
, A cover plate 11a is provided.

In the soil retaining bench, a plurality of drain ports 12 (four in this embodiment) are formed below the retaining wall 11 of each step in the longitudinal direction, and one of the drain ports 12 is provided with a drain pipe 2.
1 to connect the drain pipes 21 of each stage to each other. In the retaining wall 11 of each step, water collecting pipes 22 are inserted into all of the remaining drain ports 12, and these water collecting pipes 22 are connected to the drain pipes 21 of the corresponding steps via communication pipes 23. 2
1. The water collecting pipe 22 and the communication pipe 23 are buried in the earth and sand layer 51, and the height of the earth and sand layer 51 in each step is formed substantially the same as the upper end of the retaining wall in the same step. Drain pipe 2
1. The water collecting pipe 22 and the communication pipe 23 are made of, for example, hard polyvinyl chloride. Also, as shown in FIG.
Is filled with crushed stone or split chestnut.

Next, an example of a procedure for constructing a lawn-finished earth retaining bench on a relatively soft ground, for example, a flat ground with weeds will be described. (1) First, determine the position of the retaining wall to be erected in multiple steps. (2) Lay a waterproof plastic sheet on flat ground. (3) For the retaining walls of the second and higher levels, a sediment layer and a split chestnut layer are formed on the retaining wall installation position of each step, and the height of the split chestnut layer upper surface is set to a predetermined value. . In this case, the height of the upper surface of the split chestnut layer in the subsequent stage is set higher than the adjacent preceding stage by a predetermined value. At the first retaining wall installation position, a hole having an appropriate depth is dug in the ground, and the split chestnut layer is filled and formed there.

(4) As shown in FIGS. 4 and 12, a long retaining wall formed by connecting retaining walls is vertically erected by staples 46 on the split chestnut layer of each step. FIG.
As shown in FIGS. 4 and 15, a cover plate 11a is provided at the upper end of the long retaining wall. In this case, as shown in FIG. 11, the ends of the plurality of retaining walls, that is, the plate-like stays 13 at both ends on the front side are abutted against each other, and the double folded washer 1 shown in FIG.
6 on the two plate-like stays, and plate-like stays 13, 1
After the bolts 43 are inserted into the communication holes formed by connecting the three bolt insertion holes 13a with each other, the retaining walls are connected to each other by fixing with the nuts 44 to form a long retaining wall. In FIG. 13, reference numeral 16a denotes a bolt insertion hole.

(5) A drain pipe 21, a communication pipe 23 and a water collecting pipe 22 are provided for the retaining wall of each step as described above, and all the drain pipes are connected as shown in FIG. In this case, the length of the communication pipe 23 is made substantially equal to the length of the retaining wall, and the connection of the communication pipes is performed by the socket 24. As shown in FIGS. 3 and 4, the connection between the water collecting pipe 22 and the communication pipe 23 is performed by a socket 23 a provided on the communication pipe 23.
The connection between the communication pipe 23 and the drain pipe 21 is performed using socket portions 23b and 23c provided on the communication pipe 23. As shown in FIG. 6, the drain pipes 21 at each stage are composed of a horizontal pipe 21a inserted into the drain port 12 and a vertical pipe 21b. The horizontal pipe 21a has a rectangular cross section corresponding to the drain port 12, and the vertical pipe 21b has a circular pipe. For connecting the horizontal pipe 21a and the vertical pipe 21b, a downward elbow 21c and an upward elbow 21d are used.
e.

The number, arrangement pitch, and diameter of the drainage pipes 21 after connection in the retaining bench, the number, arrangement pitch, and diameter of the water collection pipes 22 provided on one retaining wall, the diameter of the communication pipe 23, and the like. Is determined in consideration of the amount of rainfall on the retaining bench, the required amount of drainage, etc. Further, the drainage pipe 21, the water collection pipe 22, and the communication pipe 23 may be formed as inclined pipes to improve the drainage function.

(6) Embankment is performed on the rear side of the retaining wall of each step. At this time, as shown in FIG. 8, all the compartments 15 are filled with split chestnut (or crushed stone). Thus, the weight of the split chestnut is applied to the retaining wall, so that the retaining wall can be fixed more stably. Next, after compaction is performed to obtain the configuration shown in FIG. 1, grass is ground on the ground.

Next, the operation of the above-described retaining bench will be described. The retaining wall 11 of each step can be used as a bench, and the audience can sit on the upper end (the cover plate 11a) of the retaining wall 11. The ground (surface of the earth and sand layer 51) of each step becomes a passage. In FIGS. 1 and 2, the water in each layer of sediment formed by the penetration of rainwater or the like is drained from the drain port 12
From the drain pipe 2 through the communication pipe 23.
1 and discharged outside the retaining bench. in this case,
Since the waterproof sheet 41 is laid, the water in the earth and sand layer hardly permeates to a lower layer than the waterproof sheet 41.

Embodiment 2 FIG. 16 is a schematic sectional view of a soil retaining bench, and FIG. 17 is a plan view of the same, showing a piping procedure of a drain pipe. FIG.
FIG. 8 is a sectional view taken along line DD of FIG. 17 and shows the procedure for embedding a drainage pipe in the split chestnut layer.

In the second embodiment, the drainage pipe 31 having a structure also serving as a water collection pipe is provided in place of the drainage pipe 21 in the first embodiment, so that the water collection pipe 22 and the communication pipe 23 are omitted. is there. That is, as shown in FIG. 16 to FIG. 18, a plurality of retaining walls 11 are erected in parallel on the ground 10 at appropriate intervals with each other, and earth retaining works are performed on the rear surface of the retaining walls 11 to thereby perform the earth and sand layer. A retaining bench formed by forming steps 51 in a stepped shape, wherein a drain port 12 is formed below the retaining wall 11.
Are formed along the longitudinal direction thereof, and drain pipes 31 having slit-shaped water collecting holes 32 formed in appropriate places are inserted through all of the drain ports 12 to connect the corresponding drain pipes of each stage to each other. The drainage holes 31 of each drainage pipe 31 are surrounded by a rubble stone layer 52, and the rubble stone layer 52 is filled with a sediment layer 51 to bury all the drainage pipes 31 in the soil layer 51. The height of the earth and sand layer 51 in each step is substantially the same as the upper end of the retaining wall 11 in the same step.

In FIGS. 16 to 18, the water in the sediment layer of each stage flows into the drainage pipe 31 directly from the water collecting hole 32 and is discharged out of the soil retaining bench. In this case, the waterproof sheet 41
The water in the earth and sand layer is
It hardly penetrates the lower layer. In addition, in this soil retaining bench, by filling all the compartments 15 of the retaining wall 11 with earth and sand, the weight of the earth and sand can be applied to the retaining wall, so that the retaining wall can be more stably fixed.

[0025]

As is apparent from the above description, according to the present invention, it can be used as a multi-stage seat and has a function of collecting and draining water in the stratum. There is an effect that the earth retaining bench and the retaining wall for installing the same can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view illustrating a structure of an earth retaining bench according to Embodiment 1 of the present invention.

FIG. 2 is a plan view of FIG. 1 and is an explanatory view of piping of a water collecting pipe, a communication pipe, and a drain pipe.

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is an explanatory view of a construction procedure of a drain pipe in FIG. 1;

FIG. 7 is a front view of the retaining wall in FIG. 1 (showing the front side).

8 is a rear view of the retaining wall of FIG. 7 (rear side is shown).

FIG. 9 is a plan view of the retaining wall of FIG. 7;

FIG. 10 is a right side view of FIG. 7;

FIG. 11 is a front view showing a connecting portion between the retaining walls.

FIG. 12 is a rear view of FIG. 11 and is an explanatory view showing a procedure for fixing the retaining wall on the split chestnut layer.

13 (a) is a plan view, FIG. 13 (b) is a front view, and FIG. 13 (c) is a right side view of FIG. 13 (b), showing double folded washers for connecting retaining walls.

FIG. 14 is a plan view of the retaining wall after the cover plate is attached.

FIG. 15 is a sectional view taken along line CC of FIG. 14;

FIG. 16 is a schematic sectional view showing a structure of a retaining bench according to Embodiment 2 of the present invention.

FIG. 17 is a plan view of FIG. 16, showing a piping procedure of a drain pipe.

FIG. 18 is a sectional view taken along line DD of FIG. 17 and shows a point of embedding a drainage pipe in the split chestnut layer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Ground 11 (Witch wall type) Retaining wall 11a Cover plate 12 Drain port 13,14 Plate stay 13a Bolt insertion hole 15 Compartment room 16 Double folded washer 16a Bolt insertion hole 21 Drain pipe 21a Horizontal pipe 21b Vertical pipe 21c Downward elbow 21d upward elbow 21d socket 22 water collecting pipe 23 communication pipe 23a to 23c socket part 24 socket 31 drain pipe 32 water collecting hole 41 waterproof sheet 42 base 43 bolt 44 nut 45 through hole 46 staple 51 earth and sand layer 52 split chestnut layer

Claims (10)

[Claims] An earth retaining bench having a plurality of retaining walls erected in parallel on the ground at appropriate intervals with an appropriate interval therebetween, and the earth retaining layer is formed on the rear surface of the retaining wall to form a stepped earth and sand layer. A plurality of drain ports are formed in the longitudinal direction below the retaining wall of each step, and a drain pipe is inserted into one of the drain ports to connect the drain pipes of each step to each other. A water collecting pipe is inserted into at least one of the other drainage ports in the retaining wall, and the water collecting pipe is connected to the same-stage drainage pipe through a communication pipe, and the drainage pipe of each stage is
An earth retaining bench wherein a water collecting pipe and a communication pipe are buried in a sediment layer, and the height of the sediment layer in each step is substantially the same as the upper end of a retaining wall in the same step. 2. A retaining bench formed by arranging a plurality of retaining walls in parallel on the ground at appropriate intervals with respect to each other, and constructing a retaining layer on the rear surface of the retaining wall to form a stepped soil layer. A plurality of drainage ports are formed in the lower part of the retaining wall of each step in the longitudinal direction, and a drainage pipe having a slit-shaped water collecting hole in an appropriate place is inserted through at least one of the drainage ports, The drainage pipes of each stage are connected to each other, the drainage hole forming part of the drainage pipe is surrounded by a crushed stone layer or a rubble stone layer, and all the drainage pipes are filled with earth and sand by surrounding the layer with a sediment layer. An earth retaining bench buried in a layer, wherein the height of the earth and sand layer of each step is substantially the same as the upper end of the retaining wall of the same step. 3. The retaining bench according to claim 1, wherein the earth and sand layer is formed on a waterproof sheet laid on the ground. 4. The lower end of the retaining wall is fixed to the base by placing the retaining wall on a base made of a crushed stone layer or a split chestnut layer and driving staples made of a corrosion-resistant metal into the base. The retaining bench according to claim 1 or 2, wherein: 5. The retaining wall is composed of a plate-like member made of a hard and corrosion-resistant material, and a plurality of plate-like stays are provided on the front side at appropriate intervals in the vertical direction and in the longitudinal direction of the retaining wall, A compartment is formed on the rear side of the retaining wall by providing a plurality of plate-like stays extending from the upper end to the lower end of the retaining wall at appropriate intervals in the longitudinal direction of the retaining wall. The earth retaining bench according to claim 1 or 2, characterized in that: 6. A bolt-shaped through hole is formed in a plate-like stay at both ends on the front side of the retaining wall, and ends of the plurality of retaining walls are abutted to communicate with each other. The retaining bench according to claim 5, wherein a bolt is inserted through the fixing wall, the nut is fixed, and the retaining walls are connected to each other to form a long object. 7. The retaining bench according to claim 1, wherein the compartment of the retaining wall is filled with crushed stone or split chestnut. 8. The retaining bench according to claim 2, wherein the compartment of the retaining wall is filled with earth and sand. 9. A retaining wall-type retaining wall for constituting the retaining bench according to claim 1 or 2, wherein a rigid plastic is integrally molded, and a drain port is formed at a lower portion of the retaining wall in a longitudinal direction of the retaining wall. A plurality of plate-shaped stays on the front side in the vertical direction, and provided at appropriate intervals in the longitudinal direction of the retaining wall, and on the rear side where earth retaining is performed, from substantially the upper end of the retaining wall. A retaining wall, wherein a compartment is formed by providing a plurality of plate-like stays extending substantially at the lower end and at appropriate intervals in the longitudinal direction of the retaining wall. 10. A bolt penetrating hole is formed in a plate-like stay at both ends on the front side, and the bolt penetrating holes communicate with each other when the ends of two retaining walls abut against each other. The retaining wall according to claim 9, wherein: