JP2018044337A - Embankment reinforcement structure and embankment reinforcement method - Google Patents

Abstract

An embankment reinforcing structure and an embankment reinforcing method capable of suppressing flow of a portion supporting the embankment and at the same time reinforcing the slope of the embankment without increasing the cross-sectional performance of the retaining wall. The earth retaining wall 5 is a reinforcing structure of the embankment 3 that reinforces the embankment 3 on the ground surface, and is embedded in the ground and reaches the fixed layer M of the portion of the ground 2 that supports the embankment 3; The earth retaining wall 5 and the reinforcing material 6 are connected to each other. The reinforcing material 6 is embedded in the embankment 3 and has a fixing mechanism that is fixed in the embankment 3 and reinforces the slope of the embankment 3. [Selection] Figure 1

Description

  The present invention relates to an embankment reinforcement structure and an embankment reinforcement method.

  Conventionally, for example, as shown in Patent Document 1 below, in order to improve the permeation resistance and seismic resistance of existing river dikes, it is buried in the ground as a reinforcement structure for embankment that reinforces embankment on the ground surface, The structure provided with the earth retaining wall which suppresses the flow of the part which supports embankment among the ground is known.

Japanese Patent No. 5729754

  However, the conventional embankment reinforcement structure has a problem that it is difficult to reliably suppress the flow of the portion of the ground that supports the embankment unless the retaining wall is given an excessively large cross-sectional performance. .

  The present invention has been made in view of the above-mentioned circumstances, and without excessively increasing the cross-sectional performance of the retaining wall, the flow of the portion supporting the embankment of the ground is surely suppressed and at the same time the slope of the embankment is controlled. It aims at providing the reinforcement structure of the embankment which can be reinforced, and the reinforcement method of an embankment.

  In order to solve the above problems, the embankment reinforcing structure according to the present invention is a embankment reinforcing structure that reinforces the embankment on the ground surface, and is embedded in the ground, of the portion of the ground that supports the embankment. A retaining wall that reaches the fixed layer, and a reinforcing material that is embedded in the embankment and has a fixing mechanism that is fixed in the embankment, and reinforces the slope of the embankment, wherein the retaining wall and the reinforcing material are Are connected to each other.

  Further, the embankment reinforcing method according to the present invention is a embankment reinforcing method that reinforces embankment on the ground surface, and the earth retaining wall reaching the fixed layer of the portion supporting the embankment in the ground is buried in the ground. A retaining wall embedding step, a reinforcing material having a fixing mechanism fixed in the embankment and reinforcing a slope of the embankment, a reinforcing material embedding step of embedding in the embankment, the retaining wall and the reinforcing material A connection step of connecting each other.

  According to these inventions, since the reinforcing material embedded in the embankment has the fixing mechanism fixed in the embankment, the reinforcing material is fixed in the embankment by this fixing mechanism. And if the retaining wall is connected to the reinforcing material fixed in the embankment, if the retaining wall is only buried in the ground to reach the fixed layer, the force that suppresses the flow of the part of the ground that supports the embankment It can also be obtained from a reinforcing material. Therefore, the flow of the portion of the ground that supports the embankment can be reliably suppressed without making the cross-sectional performance of the retaining wall excessive.

Further, in the embankment reinforcement structure according to the present invention, the earth retaining wall is embedded in the ground with its upper end projecting above the ground surface and facing the slope of the embankment, The upper end portion of the earth retaining wall and the one end portion of the reinforcing material may be connected to each other with the one end portion protruding from the slope of the embankment.
In the embankment reinforcement method according to the present invention, the retaining wall embedding step includes embedding the retaining wall in the ground with its upper end projecting on the ground surface and facing the slope of the embankment. In the reinforcing material embedding step, the reinforcing material is embedded in the embankment with one end portion protruding from the slope of the embankment, and the connecting step includes the upper end portion of the earth retaining wall and the reinforcement. One end of the material may be connected to each other.
In these cases, it is possible to easily connect the retaining wall and the reinforcing material.

Moreover, in the reinforcement structure of the embankment which concerns on this invention, the said retaining wall and the said reinforcing material may be mutually connected via the slope protection member arrange | positioned at the lower end part of the slope of the said embankment.
Further, in the embankment reinforcing method according to the present invention, the connecting step connects the earth retaining wall and the reinforcing material to each other via a slope protection member disposed at a lower end portion of the slope of the embankment. Also good.

In these cases, since the slope protection member is arranged at the lower end of the slope of the embankment, the slope protection member is suppressed and embankment can be suppressed and occurrence of arc slip and in-slope slip can be suppressed. . In addition, since the retaining wall and the reinforcing material are connected to each other via the slope protection member, it is possible to reliably connect both the retaining wall and the reinforcing material without accurately determining the relative positions of the retaining wall and the reinforcing material. it can.
Moreover, the upper end of the retaining wall protrudes on the ground surface, and the slope protection member is disposed on the opposite side of the embankment with respect to the retaining wall, and the upper end of the retaining wall is located on the opposite side of the embankment by the slope protection member. When supported, it becomes possible to suppress the upper end portion of the retaining wall from being pushed and displaced toward the opposite side of the embankment due to, for example, collapse of the slope of the embankment, The retaining wall can reliably suppress the flow of the portion of the ground that supports the embankment.

In the embankment reinforcing structure according to the present invention, the reinforcing material may be tubular, and the fixing mechanism may be a blade member formed on an outer peripheral surface embedded in the embankment of the reinforcing material.
In this case, the reinforcing member blade member can increase the resistance to the pulling-out load of the reinforcing material from the embankment, and the reinforcing material can be fixed in the embankment with a simple configuration.

Further, in the embankment reinforcing structure according to the present invention, the reinforcing material has a tubular shape, and the fixing mechanism passes through the drainage hole penetrating the reinforcing material in the radial direction and the hollow portion of the reinforcing material, and enters the embankment. It may be a drainage channel that discharges the moisture to the outside.
In this case, moisture in the embankment is discharged through the drainage channel, and the amount of moisture in the embankment can be reduced, so that the embankment can be hardened and not easily collapsed, and a reinforcing material can be fixed in the embankment. Can do.

Moreover, in the reinforcement structure of the embankment which concerns on this invention, the said reinforcing material may be embed | buried in the said embankment so that it may become horizontal or an upward slope rather than horizontal toward the said embankment.
In this case, since the moisture in the embankment flows out of the embankment through the drainage path of the reinforcing material by its own weight, the moisture in the embankment can be efficiently discharged.

  According to the inventions according to claims 1 and 7 of the present application, the flow of the portion supporting the embankment of the ground is surely suppressed and the slope of the embankment is reinforced at the same time without making the cross-sectional performance of the retaining wall excessive. be able to.

It is a cross-sectional schematic diagram which shows the reinforcement structure of the embankment which concerns on 1st Embodiment of this invention. It is a top view which shows an example of the connection state of the earth retaining wall and reinforcement material in the reinforcement structure of the embankment shown in FIG. It is a modification of the embankment reinforcement structure shown in FIG. It is a cross-sectional schematic diagram of the embankment reinforcement structure which concerns on 2nd Embodiment of this invention. It is a modification of the embankment reinforcement structure shown in FIG. It is another modification of the embankment reinforcement structure shown in FIG.

(First embodiment)
Hereinafter, the embankment reinforcement method and the embankment reinforcement structure 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
In addition, in the following description, the embankment of the river 10 is shown as the embankment 3 on the ground surface of the ground 2, and the structure and method which reinforce this embankment 3 are demonstrated. Here, the river 10 side with respect to the embankment 3 in FIG. 1 is defined as the river front side, the opposite side is defined as the river back side, and the direction extending along the river 10 is defined as the depth direction of the embankment 3.

  The embankment reinforcing structure 1 according to the present embodiment is buried in the ground, and the earth retaining wall 5 reaching the fixed layer M of the portion of the ground 2 that supports the embankment 3 and the embankment 3 are buried in the embankment 3. And a reinforcing member 6 that has a fixing mechanism fixed to the embankment and reinforces the slope of the embankment, and the earth retaining wall 5 and the reinforcing member 6 are connected to each other. Here, the portion of the ground 2 that supports the embankment 3 is a portion of the ground 2 that is located below and on the side of the embankment 3, and the embankment 3 sinks due to the weight of the embankment and faces sideways. It refers to the part that is restrained from flowing.

The earth retaining wall 5 is embedded in the ground with its upper end 5a protruding above the ground surface and facing the slope 4 of the embankment 3. In the present embodiment, the earth retaining wall 5 is a steel sheet pile having an uneven cross section along the horizontal direction. A plurality of earth retaining walls 5 are driven into the lower end portion 4 a of the slope 4 of the embankment 3 along the depth direction of the embankment 3. The steel sheet pile extends in the vertical direction.
The lower end portion of the earth retaining wall 5 reaches the fixed layer M where substantially no flow occurs. In general, the fixed layer M is relatively fluidized such that, for example, during an earthquake, the liquefied ground cannot withstand the embankment weight and sinks toward the liquefaction surface S0 and moves toward the side. It is located below the liquefied layer L where it is easy. Compared with the liquefied layer L, the fixed layer M is less likely to fluidize as described above.
Moreover, the penetration depth D of the retaining wall 5 into the fixed layer M is preferably equal to or greater than the depth of the liquefied layer L and equal to or greater than 3 m.

  The reinforcing member 6 is embedded in the embankment 3 so that the one end portion 6c protrudes from the slope 4 of the embankment 3 so that the reinforcing material 6 is horizontal or uphill than the horizontal, and the earth retaining wall 5 The upper end portion 5a and the one end portion 6c of the reinforcing member 6 are connected to each other. In the illustrated example, the reinforcing material 6 is positioned such that the other end portion 6 d embedded in the embankment 3 is positioned higher than the one end portion 6 c protruding from the slope 4 of the embankment 3. It is buried in the embankment 3. In addition, it is desirable that the penetration depth of the reinforcing material 6 into the embankment 3 is not less than half of the embankment height and not less than 2 m.

  The reinforcing material 6 has a tubular shape, for example, a steel pipe pile. On the outer peripheral surface of the other end portion 6d of the reinforcing member 6, a blade member 6a extending in a spiral shape around its central axis is projected. The blade member 6a is welded to the reinforcing member 6, for example. The blade member 6 a serves as a fixing mechanism for the reinforcing material 6. That is, the blade member 6a is firmly engaged with the embankment 3 due to the shape protruding radially outward from the outer peripheral surface of the reinforcing material 6, and increases the resistance force against the pulling load of the reinforcing material 6 from the embankment 3. . Thereby, the reinforcing material 6 is firmly fixed in the embankment 3.

  The reinforcing member 6 is formed with a drain hole 6b penetrating in the radial direction. A plurality of drain holes 6b are formed in the reinforcing member 6 at intervals in the central axis direction. For this reason, the water | moisture content in the embankment 3 can be made to flow in into the hollow part of the reinforcing material 6 through the several drain hole 6b, and can be discharged | emitted from the one end part 6c of the reinforcing material 6. FIG. That is, a drainage channel is formed by the drainage hole 6 b of the reinforcing member 6 and the hollow portion. This drainage channel is a fixing mechanism for the reinforcing member 6. By draining the water in the embankment 3 by this drainage channel, the amount of water in the embankment 3 is reduced, and the infiltrating surface S1 in the embankment 3 is lowered, so that the inside of the embankment 3 from the river 10 and the infiltrated water due to rainfall. The shear strength is prevented from being lowered, and the embankment 3 is hardened so as not to collapse.

Next, the manufacturing method of the embankment reinforcement structure 1 configured as described above, that is, the embankment reinforcement method will be described. The embankment reinforcement method in the present embodiment includes a retaining wall embedding step of embedding the retaining wall 5 in the ground, a reinforcing material embedding step of embedding the reinforcing material 6 in the embankment 3, and the retaining wall 5 and the reinforcing material 6. A connecting step of connecting.
In the retaining wall embedding step, the retaining wall 5 is embedded in the ground with its upper end 5 a protruding on the ground surface and facing the slope 4 of the embankment 3.

In the reinforcing material embedding step, the reinforcing material 6 is embedded in the embankment 3 with one end 6 c protruding from the slope 4 of the embankment 3. In this step, the reinforcing material 6 is caused to enter the embankment 3 while rotating around the central axis while the central axis is inclined in the horizontal direction or slightly upward with respect to the horizontal direction.
Here, since the reinforcing member 6 is provided with the blade member 6a, by rotating the reinforcing member 6 around the central axis, the reinforcing member 6 is sent to the riverside while the soil of the embankment 3 is sent out by the blade member 6a. It can enter into the embankment 3. Further, after the reinforcing material 6 is embedded in the embankment 3, the blade member 6 a exerts a large resistance against the pulling load from the embankment 3 to the reinforcing material 6.

In the connecting step, the upper end portion 5a of the earth retaining wall 5 and the one end portion 6c of the reinforcing member 6 are connected to each other. In the present embodiment, one reinforcing member 6 is connected to one earth retaining wall 5 by welding.
The connection method may be, for example, by bolting or fixing with concrete, or a plurality of reinforcing members 6 may be connected to one earth retaining wall 5.
In addition, as shown in FIG. 2, when embedding a plurality of retaining walls 5 and a reinforcing material 6, the plurality of retaining walls 5 are intermittently embedded along the depth direction of the embankment 3, and these retaining walls A plurality of reinforcing materials 6 may be connected to 5, and some of the reinforcing materials 6 may not be connected to the retaining wall 5. In such a case, it is desirable that the pitch dimension L between the retaining walls 5 adjacent in the depth direction is within three times the width dimension B of the retaining wall 5 in the depth direction.

  As described above, according to the embankment reinforcement method and embankment reinforcement structure 1 of the present embodiment, the reinforcing material 6 embedded in the embankment 3 has a fixing mechanism that is fixed in the embankment 3. Therefore, the reinforcing material 6 is fixed in the embankment 3 by this fixing mechanism. Then, when the retaining wall 5 is connected to the reinforcing material 6 fixed in the embankment 3, the force that suppresses the flow of the portion of the ground that supports the embankment 3 is buried so as to reach the fixed layer M. It can be obtained not only from the retaining wall 5 but also from the reinforcing material 6. Therefore, the flow of the portion of the ground 2 that supports the embankment 3 can be reliably suppressed without making the cross-sectional performance of the retaining wall 5 excessive.

Moreover, the earth retaining wall 5 and the reinforcing material 6 are connected by mutually connecting the upper end part 5a of the retaining wall 5 protruding on the ground surface and the one end part 6c of the reinforcing material 6 protruding from the slope 4 of the embankment 3. Connection processes for connecting each other can be easily performed.
Moreover, in this embodiment, the steel sheet pile method using the steel sheet pile is employ | adopted as a retaining wall embedding process. For this reason, for example, unlike the drain method in which the soil at the lower end 4a of the slope 4 is temporarily excavated and removed, and a drain material having a high shear strength is provided in this portion, the lower end 4a is temporarily excavated and removed. As a result, the embankment 3 does not have a weak portion, and the construction period does not require a long time.

Further, since the fixing mechanism of the reinforcing material 6 is the blade member 6a formed on the outer peripheral surface embedded in the embankment 3 of the reinforcing material 6, the reinforcing material 6 is pulled out from the embankment 3 by the blade member 6a. The resistance force against the load can be increased, and the reinforcing material 6 can be fixed in the embankment 3 with a simple configuration.
Moreover, by embedding the reinforcing material 6 in the embankment 3, the periphery of the slope 4 on the river back side of the embankment 3 can be reinforced, and an in-slope slip surface S <b> 2 formed near the slope 4 on the river back side. It is possible to prevent shallow collapse (slip in the slope) of the embankment 3 that occurs from the starting point.

  Further, the fixing mechanism of the reinforcing member 6 is a drainage channel that discharges moisture in the embankment 3 to the outside through the drain hole 6b that penetrates the reinforcing member 6 in the radial direction and the hollow portion of the reinforcing member 6. Since the moisture in 3 is discharged by the drainage channel and the amount of moisture in the embankment 3 can be reduced, the embankment 3 can be hardened and hard to collapse, and the reinforcing material 6 can be fixed in the embankment 3. it can.

Further, since the reinforcing material 6 is embedded in the embankment 3 so as to be horizontal or upwardly inclined toward the embankment 3, the water in the embankment 3 drains the reinforcing material 6 by its own weight. Since it flows out to the exterior of the embankment 3 through a path | route, the water | moisture content in the embankment 3 can be discharged | emitted efficiently.
Further, since the reinforcing material 6 has entered the inside of the embankment 3, the arc slip surface S <b> 3 that is the starting point of the deep collapse (arc sliding) of the embankment 3 is brought into the region on the river surface side where the reinforcing material 6 has not entered. Can be moved back up. Furthermore, since the earth retaining wall 5 is buried in the ground so as to reach the fixed layer M, occurrence of arc slip can be suppressed.

  Moreover, as a modification of the embankment reinforcement structure 1, as shown in FIG. 3, the embankment wall 5 and the reinforcing material 6 are connected to each other via a drainage basin 20 embedded in the lower end portion 4 a of the slope 4. The reinforcing structure 21 may be used. By setting it as such a structure, since the reinforcement material 6 can be arrange | positioned below further, when the reinforcement material 6 has a drainage channel, the infiltrating surface S1 in the embankment 3 is set to a low position. Can be reduced.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG.
In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

As shown in FIG. 4, in the embankment reinforcing structure 11 in the present embodiment, the earth retaining wall 5 and the reinforcing material 6 are provided via a slope protection member 7 disposed on the lower end portion 4 a of the slope 4 of the embankment 3. Are connected to each other.
In the present embodiment, as the slope protection member 7, a futon basket including a rectangular parallelepiped bag member formed of a metal wire and crushed stone packed in the bag member is employed. This futon is a porous body with a gap that allows moisture to pass through while suppressing the outflow of soil on the slope 4, and is arranged while flexibly deforming according to the shape of the place. It has a function of promoting the drainage of water around the spot.

A plurality of slope protection members 7 are arranged on the lower end portion 4a of the embankment 3 so as to form a multistage shape in the vertical direction. Moreover, the slope protection member 7 is arranged in multiple numbers so that it may continue continuously along the depth direction.
One end portion 6 c of the reinforcing member 6 protrudes further to the back of the river than the slope protection member 7. The slope protecting member 7 sandwiches the reinforcing material 6 in the depth direction. Here, a fixing flange 6 e welded to one end portion 6 c of the reinforcing member 6 is fixed to an end portion on the river back side of the slope protection member 7. Further, the slope protection member 7 is supported by coming into contact with the upper end portion 5 a of the earth retaining wall 5 from the opposite side of the embankment 3.
Thereby, as above-mentioned, the earth retaining wall 5 and the reinforcing material 6 are mutually connected via the slope protection member 7 arrange | positioned at the lower end part 4a of the slope 4 of the embankment 3. As shown in FIG.

And in the embankment reinforcement method in this embodiment, the earth retaining wall 5 and the reinforcing material 6 are mutually connected through the slope protection member 7 arrange | positioned at the lower end part 4a of the embankment 3 as a connection process. After passing through the retaining wall embedding step and the reinforcing material embedding step, the slope protection member 7 is arranged at the lower end portion 4 a of the embankment 3, and the earth retaining wall 5 and the reinforcement member 6 are connected to each other via the slope protection member 7.
In addition, as a connection process, after arrange | positioning the slope protection member 7 in the lower end part 4a previously, you may perform a retaining wall embedding process and a reinforcing material embedding process.

As described above, according to the embankment reinforcement method and embankment reinforcement structure 11 of the present embodiment, the slope protection member 7 is disposed at the lower end portion 4a of the slope 4 of the embankment 3, and thus the slope. The protective member 7 serves as a suppressed embankment, and it is possible to suppress the occurrence of arc slip and in-slope slip. In addition, since the retaining wall 5 and the reinforcing material 6 are connected to each other via the slope protection member 7, the relative positions of the retaining wall 5 and the reinforcing material 6 can be reliably determined without accurately determining the relative positions of the retaining wall 5 and the reinforcing material 6. Can be connected to.
Further, the upper end portion 5a of the retaining wall 5 protrudes on the ground surface, the slope protection member 7 is disposed on the opposite side of the embankment 3 with respect to the retaining wall 5, and the upper end portion 5a of the retaining wall 5 is slope protected. Since the member 7 is supported from the opposite side of the embankment 3, the upper end portion 5 a of the retaining wall 5 is pushed toward the opposite side of the embankment 3 due to, for example, collapse of the slope 4 of the embankment 3. It becomes possible to suppress displacement, and the retaining wall 5 can reliably suppress the flow of the portion of the ground that supports the embankment 3.

  As a modification of the embankment reinforcement structure 11, as shown in FIG. 5, a embankment reinforcement structure 31 employing a concrete block as the slope protection member 8 may be used. Thus, the slope protection member 8 can be easily constructed by using the concrete block as the slope protection member 8. Further, the one end portion 6 c of the reinforcing member 6 may be disposed inside the slope protection member 8 using porous concrete having water permeability.

  Further, as another modified example of the embankment reinforcement structure 11, as shown in FIG. 6, a slope work constructed from the lower end portion 4 a of the slope 4 to the whole area in the height direction is adopted as the slope protection member 9. The embankment reinforcement structure 41 may be used. In this way, by using the slope work as the slope protection member 9, a plurality of reinforcing materials 6 are embedded in the embankment 3 in the height direction, and each reinforcement material 6 is connected to the slope protection member 9. Can do.

  The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the said embodiment, it shows about the structure by which the upper end part 5a of the earth retaining wall 5 protruded on the ground surface and the one end part 6c of the reinforcing material 6 protruded from the slope 4 of the embankment 3 are mutually connected. However, it is not limited to such a mode. One or both of the earth retaining wall 5 and the reinforcing member 6 may be connected to each other in a portion embedded in the ground or embankment. Moreover, after connecting a part of the earth retaining wall 5 protruded on the ground surface and a part of the reinforcing material 6 protruded from the embankment 3 to each other, a mode in which the soil is filled up may be used.

Moreover, in the said embodiment, although the steel sheet pile as the retaining wall 5 was shown about the structure which was driven in the perpendicular direction in the ground of the lower end part 4a, it is not restricted to such an aspect, As a retaining wall, a steel pipe sheet pile, You may use a main pile horizontal sheet pile, an underground continuous wall, or a deterrent pile. Further, the place where the retaining wall 5 is driven may be a place away from the lower end 4a, and the direction in which the retaining wall 5 is driven is not limited to the vertical direction but may be a direction inclined with respect to the vertical direction. Good.
Furthermore, the material of the retaining wall 5 is not limited to steel, and may be a wall material such as concrete material, resin material, or frozen soil.

  Moreover, in the said embodiment, although it showed about the structure using the steel pipe pile provided with the blade member 6a as a fixing mechanism, and the fixing flange 6e as the reinforcing material 6, the reinforcing material 6 does not include the blade member 6a, The fixing flange may be a separate structure, and the reinforcing material 6 may be a material other than steel. Further, the embedding of the reinforcing material 6 may be performed not on an inclined surface such as the slope 4 of the embankment 3 but on a vertical wall surface.

Moreover, in the said embodiment, although the reinforcement material 6 showed about the structure which has a drainage channel as a fixing mechanism, the reinforcement material 6 does not need to have a drainage channel.
That is, the fixing mechanism may have another configuration instead of the blade member 6a and the drainage channel. For example, the structure etc. which fix the reinforcing material 6 in the embankment 3 by the pile material etc. which are drilled from the outer surface of the embankment 3 toward the reinforcing material 6 embed | buried in the embankment 3 are mentioned.

  Moreover, in 2nd Embodiment, the structure using the futon which is provided with the bag member which makes | forms the rectangular parallelepiped shape formed with the metal wire as the slope protection member 7, and the crushed stone packed in the inside of this bag member Although shown about, it is not restricted to such an aspect. That is, instead of a cuboid-shaped futon, a cylindrical daruma cocoon or a deformed gabion may be used, the bag member may be a bamboo material or a resin material, and the crushed stone may be a soil mass or a cement mass. . Further, the slope protecting member may be porous and non-permeable, for example, having a structure in which the lower end portion 4a is filled with cement.

  Moreover, about the positional relationship of the earth retaining wall 5, the reinforcing material 6, and the slope protection member 7 in the lower end part 4a of the embankment 3, it is not restricted to the aspect shown in 2nd Embodiment. That is, the slope protection member 7 may be arranged so that the retaining wall 5 is sandwiched by the slope protection member 7 from the river front side and the river back side. Further, the reinforcing material 6 is passed through the inside of the futon bag member which is the slope protection member 7 and then the crushed stone is thrown into the bag member so that the reinforcement material 6 is fixed to the slope protection member 7. Also good.

  Moreover, in the said embodiment, although the aspect performed with respect to the embankment 3 as the embankment of the river 10 was shown as the embankment reinforcement method and embankment reinforcement structure, it is not restricted to such an aspect. That is, the embankment may be an embankment provided on a lake shore, a reservoir, or the like, or may be an embankment without a waterside, such as a highway construction site. In such a case, the reinforcing material 6 Is provided for the purpose of discharging the seepage water due to rainfall on the embankment.

Moreover, in the said embodiment, although shown about the aspect which performs a retaining wall embedding process ahead of a reinforcing material embedding process, it is not restricted to such an aspect, After performing a reinforcing material embedding process first, You may perform a process.
In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Reinforcement structure 2 Ground 3 Filling 4 Slope 5 Retaining wall 5a Upper end 6 Reinforcing material 6a Blade member 6b Drain hole 6c One end 7 Slope protecting member 8 Slope protecting member 9 Slope protecting member

Claims (9)

Reinforcement structure of the embankment that reinforces the embankment on the surface,
A retaining wall that is buried in the ground and reaches the fixed layer of the portion of the ground that supports the embankment;
A reinforcing material embedded in the embankment and having a fixing mechanism fixed in the embankment to reinforce the slope of the embankment,
The earth retaining wall and the reinforcing material are connected to each other, wherein the embankment wall and the reinforcing material are connected to each other. The retaining wall is embedded in the ground with its upper end projecting above the ground surface and facing the slope of the embankment,
The reinforcing material is embedded in the embankment in a state where one end thereof protrudes from the slope of the embankment,
The reinforcing structure for embankment according to claim 1, wherein an upper end portion of the earth retaining wall and one end portion of the reinforcing material are connected to each other.   The embankment reinforcement according to claim 1 or 2, wherein the earth retaining wall and the reinforcing material are connected to each other via a slope protection member disposed at a lower end portion of the slope of the bank. Construction. The reinforcing material is tubular,
The embankment reinforcement structure according to any one of claims 1 to 3, wherein the fixing mechanism is a blade member formed on an outer peripheral surface embedded in the embankment of the reinforcement material. The reinforcing material is tubular,
The fixing mechanism is a drainage channel that discharges moisture in the embankment to the outside through a drainage hole penetrating the reinforcing member in a radial direction and a hollow portion of the reinforcing member. 5. The embankment reinforcement structure according to any one of 4 above.   The reinforcing structure for embankment according to claim 5, wherein the reinforcing material is embedded in the embankment so as to become horizontal or an upward slope from the horizontal toward the embankment. A method of reinforcing a fill that reinforces a fill on the surface,
A soil retaining wall burying step of burying a soil retaining wall reaching the fixed layer of the portion supporting the embankment in the ground,
A reinforcing material embedding step for embedding in the embankment a reinforcing material having a fixing mechanism fixed in the embankment and reinforcing the slope of the embankment;
And a connecting step of connecting the earth retaining wall and the reinforcing material to each other. The retaining wall embedding step embeds the retaining wall in the ground with its upper end protruding on the ground surface and facing the slope of the embankment,
In the reinforcing material embedding step, the reinforcing material is embedded in the embankment in a state where one end portion thereof protrudes from the slope of the embankment,
The method for reinforcing embankment according to claim 7, wherein in the connecting step, an upper end portion of the earth retaining wall and one end portion of the reinforcing material are connected to each other.   The said connection process connects the said earth retaining wall and the said reinforcing material mutually through the slope protection member arrange | positioned at the lower end part of the slope of the said embankment, The Claim 7 or 8 characterized by the above-mentioned. Filling method for embankment.

Images