JP6445572B2 - Construction, reinforcement, widening, and raising methods for embankments for passing vehicles - Google Patents

Description

The present invention is the construction of a vehicle pass for embankment passing thereover such as road embankments and rail embankments vehicles, reinforced, widening relates bulk upper up how.

Vehicles such as cars repeatedly act as traffic loads on road embankments, and vehicles such as trains and linear motor cars repeatedly act as traffic loads on railway embankments.
Thus, in vehicle embankments such as road embankments and railway embankments, depending on the traffic load that acts repeatedly, depending on the composition of the embankment material, horizontal deformation such as subsidence due to consolidation etc., horizontal direction such as protrusion Deformation occurs.
Therefore, in the past, air mortar, ultrafast hard mortar using ultrafast cement, or the like has been used as a banking material when constructing, reinforcing, widening, and raising a bankpass for vehicle passing.

JP2013-2168A JP-A-5-112940 Japanese Patent No. 3241339

However, when the width and overall length of the vehicle-passing embankment are increased, the amount of embankment material to be used is large when constructing, reinforcing, widening, and raising the height, and the cost is inevitably increased.
On the other hand, sedimentary sediments such as tsunami sediments and dredged soil dredged with sediment deposited on the bottom of harbors, rivers, canals, etc., are currently disposed of with money. If this sedimentary earth and sand can be used as the embankment material, it will be extremely advantageous in suppressing an increase in the cost of construction, reinforcement, widening and raising of the embankment road.
The present inventors have already obtained patents for a method for producing embankment material using the bottom mud of a pond, a method for repairing and reinforcing a dam body of a pond, and a crusher (Patent Document 3).

The inventors of the present invention are intensively researching day by day regarding the treatment of tsunami sediments and the treatment of dredged soil dredged with sediment deposited on the bottom of bays, rivers, canals and the like.
First, the solidification material is mixed with sedimentary earth and sand such as tsunami sedimentary soil and dredged soil, and when the predetermined strength is developed before the solidification material is completely solidified, the solidification material is crushed to the rolling pressure. Secondly, when the embankment layer is made from sedimentary sediment reflecting the two points of solidifying the solidified material by curing after rolling, this embankment layer is a traffic load that acts repeatedly. Attention has been paid to the fact that it has deformation characteristics and strength characteristics that can sufficiently withstand.
The present invention was devised by paying attention to the deformation characteristics and strength characteristics of the embankment layer made of sedimentary earth and sand, and its purpose is to sufficiently withstand traffic loads that repeatedly act using sedimentary earth and sand. construction of vehicle passage for embankment to be, reinforcement, widening, is to provide a bulk on up how.

In order to achieve the above-described object, the present invention is a method for constructing a vehicle-passing embankment, wherein the vehicle-passing embankment is formed by stacking a plurality of crushed and compacted soil layers, and the crushed and compacted soil layer is formed. A step of adding a solidifying material to the sedimentary soil excluding non-soil and stirring and mixing, and initial solidified soil exhibiting a predetermined strength before curing and solidifying the sedimentated sediment that has been agitated and mixed. A step of obtaining an embankment material by pulverizing the initial solidified soil to a predetermined particle size or less, a step of squeezing out the embankment material, spreading and rolling, and a step of rolling the solidified material. In the curing step for completely solidifying the embankment material, the embedding material of the crushing and compacting soil layer provided on the crushing and compacting soil layer is provided while performing the curing step after the step of rolling. Spread and spread on the embankment material that is undergoing the curing process. A step of rolling and a curing step of completely solidifying the embankment material with the solidification material after the step of rolling, and a curing step of the embankment material that constitutes the plurality of crushing and rolling soil layers in this way It is characterized in that the crushed and compacted soil layer is continuously constructed by dripping.
The present invention also relates to a method for constructing a vehicle-passing embankment, in which a solidifying material is added to the accumulated sediment excluding non-soil, stirred and mixed, and then crushed to a predetermined particle size or less after solidification. The road body part construction step of obtaining a road body part by stacking a plurality of improved soil layers constructed by rolling out and spreading and rolling this embankment material, and covering the slopes on both sides of the road body part And a step of providing a lower reinforcing layer and an upper reinforcing layer that covers the top end of the road body portion and the top end of the lower reinforcing layer, the lower reinforcing layer and the upper reinforcing layer being divided into a crushed and compacted soil layer. The crushing and rolling soil layer is composed of a step of adding a solidification material to the sedimentation soil excluding non-soil and stirring and mixing, and curing the sedimentation soil that has been agitated and mixed completely. A step of obtaining an initial solidified soil exhibiting a predetermined strength before solidifying, and the initial solidified soil to a predetermined particle size or less When providing by the step of crushing to obtain the embankment material, the step of squeezing and spreading and rolling the embankment material, and the curing step of completely solidifying the embankment material by the solidifying material after the step of rolling, While performing the curing process after the rolling process, the embankment material of the crushed and compacted soil layer provided thereon is crushed and spread on the embankment material performing the curing process. The step of leveling and rolling, and the curing step of completely solidifying the embankment material with the solidification material after the step of compacting, curing the embankment material that constitutes the plurality of crushing and rolling soil layers in this way It is characterized by continuously constructing the crushed and compacted soil layer by dripping the process.
The present invention is also a method for reinforcing a vehicle-passing embankment, comprising a lower reinforcing layer that covers slopes on both sides of the vehicle-passing embankment, a top end of the vehicle-passing embankment, and a top end of the lower reinforcing layer. An upper reinforcing layer is provided, and the lower reinforcing layer and the upper reinforcing layer are formed by stacking a plurality of crushed / crushed earth layers, and the crushed / crushed earth layers are deposited sediment excluding non-soil. Adding a solidifying material to the mixture and stirring and mixing; curing the stirred sediment and obtaining an initial solidified soil that exhibits a predetermined strength before fully solidifying; and preliminarily setting the initial solidified soil A step of obtaining a banking material by pulverizing to a particle size equal to or less than a particle size, a step of squeezing and leveling and rolling the banking material, and a curing for completely solidifying the banking material by the solidifying material after the step of rolling The curing step is performed after the rolling step. And crushing and spreading the embankment material of the crushed and compacted earth layer provided thereon on the embankment material performing the curing process, and the rolling After the process, a curing process for completely solidifying the embankment material with the solidification material is performed, and the curing process of the embankment material constituting the plurality of crushing and rolling compaction layers is thus drastically performed. It is characterized in that the crust layer is constructed continuously.
Further, the present invention is a method for widening a vehicle-passing embankment, wherein a widening layer is provided to cover the slopes on both sides of the vehicle-passing embankment, and the widening layer is formed by stacking a plurality of crushed and compacted soil layers. A step of adding a solidifying material to the sedimentation soil excluding non-soil and stirring and mixing, and curing and stirring the sedimentation soil that has been agitated and mixed. A step of obtaining an initial solidified soil exhibiting the strength of the step, a step of obtaining an embankment material by pulverizing the initial solidified soil to a predetermined particle size or less, a step of squeezing and spreading and rolling the embankment material, and The crushing / rolling pressure provided on the crushing step after the step of rolling, during the curing step after the step of rolling, when providing the curing step for completely solidifying the embankment material with the solidification material after the step of rolling. The embankment in which the embankment material of the soil layer is subjected to the curing process A plurality of the crushed and compacted soil layers are thus obtained by performing a step of squeezing and spreading and squeezing on the surface, and a curing step of completely solidifying the embankment material by the solidifying material after the step of rolling. It is characterized in that the crushing / rolling soil layer is continuously constructed by draping the curing process of the embankment material constituting the material.
Further, the present invention is a method for raising a vehicle-passing embankment, the lower raising layer covering the slopes on both sides of the vehicle-passing embankment, the top of the vehicle-passing embankment, and the top of the lower raising layer An upper raised layer is provided to cover the lower raised layer and the upper raised layer, and a plurality of crushed / crushed soil layers are stacked, and the crushed / crushed soil layer is deposited on sedimentary soil excluding non-soil. Adding a solidifying material and stirring and mixing; curing the stirred and mixed sedimentary earth to obtain an initial solidified soil exhibiting a predetermined strength before fully solidifying; and A step of obtaining a banking material by pulverizing to a particle size or less, a step of squeezing and spreading the banking material, and a step of curing to completely solidify the banking material by the solidifying material after the step of rolling And providing the nutrient after the step of rolling. During the process, the embankment material of the crushing and rolling soil layer provided thereon is crushed on the embankment material that is performing the curing process, and leveled and rolled, and After the step of rolling, a curing step of completely solidifying the embankment material with the solidifying material is performed, and the crushing and curing step of the embankment material constituting the plurality of crushing and compacting soil layers is hung up and the crushing is performed. -The feature is that the compacted soil layer is constructed continuously.

Construction of vehicle passage for embankment of the invention, reinforcement, widening, bulk on up how uses a plurality of grinding-rolling圧土layer stacked. And first, a crushing / crushing earth layer mixes a solidification material with sedimentary earth and sand, and when a predetermined intensity | strength expresses before a solidification material solidifies completely, it will carry out to a rolling pressure. Second, it is made from sedimentary earth and sand, reflecting the two points of solidifying the solidified material by curing after rolling.
Therefore, the crushed and compacted soil layer made of sedimentary earth and sand has deformation characteristics and strength characteristics that can sufficiently withstand repeated traffic loads, and vertical deformation such as subsidence due to consolidation, etc. Thus, it is possible to suppress the horizontal deformation such as the construction of a bank passing embankment that is excellent in durability, reinforcement, widening, and raising the structure.

It is sectional drawing which shows the construction structure of the embankment for vehicle passage of 1st Embodiment. (A), (B), (C) is explanatory drawing of the construction method of the embankment for vehicle passage of 1st Embodiment. It is sectional drawing which shows the reinforcement structure of the embankment for vehicle passage of 2nd Embodiment. (A), (B), (C) is explanatory drawing of the reinforcement method of the embankment for vehicle passing of 2nd Embodiment. It is sectional drawing which shows the widening structure of the embankment for vehicle passage of 3rd Embodiment. (A), (B), (C) is explanatory drawing of the widening method of the embankment for vehicle passage of 3rd Embodiment. It is sectional drawing which shows the raising structure of the embankment for vehicle passage of 4th Embodiment. (A), (B), (C) is explanatory drawing of the raising method of the embankment for vehicle passage of 4th Embodiment. It is sectional drawing which shows the construction structure of the banking embankment of 5th Embodiment. (A), (B), (C) is explanatory drawing of the construction method of the embankment for vehicle passing of 5th Embodiment. It is a diagram which shows the deviation stress-strain curve of the road embankment which consists of hardened concrete, general soil, and crushed and compacted soil. It is a diagram which shows the relationship of the shear strength-restraint pressure of the road embankment which consists of general soil and crushed and compacted soil.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, a first embodiment will be described with reference to FIGS.
In the first embodiment, a construction structure of a vehicle-passing embankment will be described together with a construction method.
In the first embodiment, the vehicle passing embankment constructed according to the present invention is a road embankment 10A.

As shown in FIG. 1 and FIG. 2 (C), the road embankment 10A is configured by stacking a plurality of crushed and compacted soil layers 12A.
In the crushed / rolled soil layer 12A, an initial solidified soil that has developed a predetermined strength before the solidified material is added to the sedimentary soil excluding non-soil, stirred, mixed, cured and completely solidified is less than a predetermined particle size. It is made into the embankment material by crushing, and this embedding material is crushed and spread, and it is compacted, and after being compacted, it is completely solidified.
That is, firstly, the solidified material is mixed with the sediment, and when the predetermined strength is developed before the solidified material is completely solidified, it is crushed and rolled up, and secondly, the pressed material is rolled. The crushed and compacted soil layer 12A is composed of sedimentary earth and sand, reflecting two points of solidifying the solidified material by curing later.
As sedimentary sediment, tsunami sedimentary soil or dredged soil filled with sediment deposited on the bottom of ports, rivers, and canals is used.

When providing the crushed / rolled earth layer 12A, a disposal site is provided in the vicinity of the road embankment 10A constructed in the present embodiment.
Tsunami deposits and dredged soil are transported to a disposal site by a dump truck.
In the case of dredged soil, since dredged soil has a very high water content, it can also be pumped from a dredger to a disposal site via a pump and a pipe.
In addition, in the case of dredged soil, since the water content is very large, natural drying is first performed at the disposal site. Depending on the season, natural drying lasts for a few days to a week.
Tsunami deposits and dredged soils contain large amounts of concrete lumps, rubber products, glass products, plastic products, metal products, debris such as columns and beams.
Therefore, non-earth materials such as concrete lumps, rubber products, glass products, plastic products, metal products, pillars and beams, etc. are removed from the tsunami deposits and dredged soil by construction machines at the disposal site.

To remove non-earth by construction machine, first use a rake dozer for the first non-earth which is concrete lumps and tires, plastic products, metal products, pillars and beams, desks, chairs etc. Remove. As a result, the first treated soil (first sedimentary sediment) is obtained.
Next, by a backhoe that is a construction machine having a mesh with a mesh of 20 to 30 cm in a bucket, a concrete lump and tire, a plastic product, a metal product, a pillar and a beam having a size exceeding 20 to 30 cm from the first treated soil, A second treated soil (second sedimentary sediment) from which the second non-soil, which is a debris such as a desk or chair, has been removed is obtained.

Next, the second treated soil is transported to a plurality of solidification pits by a transport vehicle and stored in each solidification pit.
Here, the solidification pit is, for example, a hole excavated by a construction machine such as a backhoe.
The second treated soil stored in the solidified pit is mixed with the solidified material by a stirrer / mixer and cured to become initial solidified soil.
At this time, the addition amount of the solidifying material or the addition amount of water mixed in accordance with the properties of the second treated soil is adjusted. Here, various conventionally known materials such as cement can be used as the solidifying material.
Moreover, when sedimentary sediment is dredged soil, a fluorine elution reducing agent is added with a solidification material. The reason for using a fluorine elution reducing agent is, for example, that in Tokyo, the embankment in the sea is 15 mg / liter, whereas in the land embankment, it is very severe, 0.8 mg / liter. As the fluorine elution reducing agent, a commercially available product “F Cretos” manufactured by Chiyoda Ude Co., Ltd. is used.
The second treated soil becomes an initial solidified soil that has reached a predetermined strength in a state before the cement is completely solidified after a predetermined curing period.
The initial solidified soil is excavated and crushed by an excavator / crusher, and is used as an embankment material having a particle size of a predetermined value or less.
Here, the excavator / crusher is, for example, a backhoe equipped with a skeleton bucket, and the particle size is managed by setting the mesh of the skeleton bucket.
Here, the predetermined value of “the particle size is equal to or smaller than the predetermined value” is 20 to 30 cm from the viewpoint of efficiently performing the embankment work.

The embankment material is a material in which the initial solidified soil is simply crushed to a particle size of a predetermined value or less, and the properties of the initial solidified soil possessed by the initial solidified soil, that is, the state before the cement is completely solidified. It has the properties that have reached the strength of.
Then, the embankment material is loaded on a dump truck, transported to a leveled place where the road embankment 10A is constructed, and the road embankment 10A is constructed over the entire length of the road embankment 10A to be constructed or for each predetermined section. Is immediately unwound by a dump truck over the entire length of the predetermined section, spread by a backhoe, and rolled by a vibrating roller.
That is, if the second treated soil becomes the initial solidified soil, the excavation / crushing to rolling compaction are immediately performed, and the embankment material having a predetermined strength in a state before the cement is completely solidified is obtained. Compressed.
Then, as shown in FIG. 2 (A), the first crushed and compacted soil layer 12A-1 that forms the lowermost layer of the road embankment 10A is formed by curing and solidifying the cement completely.
In this case, if a plurality of solidification pits are provided, the step of storing the second treatment soil in the solidification treatment pit, the step of mixing the second treatment soil and the solidification material by a stirring mixer, and the solidification treatment pit The process of curing inside and the process of excavating / disintegrating by excavating / pulverizing machine and transporting to the transport vehicle are performed in parallel, which is advantageous in obtaining a large amount of embankment material in a short period of time.

Next, the embankment material is unwound from the dump truck on the first crushed and compacted soil layer 12A-1, spread by a backhoe, rolled by a vibrating roller, and cured, as shown in FIG. 2 (B). As shown, a second crushing / crushing earth layer 12A-2 that covers the first crushing / crushing earth layer 12A-1 is formed. As shown in FIGS. 1 and 2C, the road embankment 10A is formed by stacking a plurality of the crushed and compacted soil layers 12A-1, 12A-2,.
In addition, after the compaction, the crushed and compacted soil layer 12A is completed by curing and cement is completely solidified, and then unwinding and spreading the embankment material of the crushed and compacted soil layer 12A formed thereon. The rolling material may be rolled and cured by a vibrating roller, but while rolling and curing the embankment material, the embankment material of the crushing / rolling soil layer 12A provided thereon is unrolled and spread by the vibrating roller. It may be rolled and cured, and the construction period can be shortened by continuously building the crushed / crushed soil layer 12A by extending the curing period of the embankment material constituting the crushed / crushed soil layer 12A. This is advantageous for achieving the above.

And as shown in FIG. 1, the pavement layer 14 is provided in the upper surface of the crushing / pressing earth layer 12A-n located in the uppermost layer stacked as needed.
The pavement layer 14 is provided with a conventionally known structure such as concrete pavement or asphalt pavement.

In the road embankment 10A of the present embodiment, the embankment material made of the initial solidified soil in a state of reaching a predetermined strength before the cement is completely solidified is rolled, and after the rolling, the cement is completely solidified. A plurality of formed crushed and compacted soil layers 12A are stacked.
That is, in the present embodiment, a cement-type solidifying material is added to and mixed with the sedimentary soil excluding non-earth, and then, once completely solidified, it is crushed once and rolled to construct a dense embankment.
Therefore, it has a microscopically non-uniform composition in which large blocks and fine blocks are mixed in the embankment, and deformation or cracks are difficult to concentrate, resulting in macroscopically uniform deformation.
Also, after adding and mixing cement-based solidification material, before solidification is complete, it is once crushed and rolled to build a solid embankment, so that the whole embankment is integrated and the strength increases again after rolling Have
Therefore, the road embankment 10A composed of the crushed / rolled soil layer 12A has deformation characteristics and strength characteristics that can sufficiently withstand repeated traffic loads, and is deformed in the vertical direction such as subsidence due to consolidation or the like. It is possible to suppress horizontal deformation.
Accordingly, it is possible to suppress vertical deformation such as subsidence due to consolidation and the like, and horizontal deformation such as protrusion, and it is possible to construct a road embankment 10A having excellent durability.
Also, the road embankment 10A is constructed by using the sediment embankment that has no use and is difficult to dispose, such as tsunami sediment and dredged soil deposited on the bottom of ports, rivers, and canals. This is advantageous in reducing the cost.

Next, the property of the road embankment 10A composed of the crushed and compacted soil layer 12A will be examined.
FIG. 11 shows a road embankment composed of a conventional improved soil layer (not formed in the step of crushing and rolling after adding and mixing a solidifying material), a road embankment composed of a general soil layer, and the crushing of the present invention. -It is a diagram which shows the deviation stress-strain curve of 10 A of road embankments which consist of the rolling compaction layer 12A. In FIG. 11, the horizontal axis indicates strain, and the vertical axis indicates deviation stress.
As shown by the curve A, the road embankment made of the conventional improved soil layer has a high strength, but compared with the road embankment made of the ordinary soil layer shown by the curve B, the peak strength is reduced with a very small deformation. After the peak intensity, the deformability is inferior, for example, the intensity is suddenly reduced.
On the other hand, the road embankment 10A composed of the crushed and compacted soil layer 12A shown by the curve C has the same deformability as the road embankment composed of a general soil layer, but is more than the road embankment composed of a general soil layer. It can be seen that it exhibits great strength.
This is because the road embankment 10A composed of the crushed and compacted soil layer 12A is produced by crushing the initial solidified soil to a predetermined particle size or less in addition to the embankment material being solidified by the solidified material. Because it is composed by rolling out and filling and rolling and rolling and rolling the material, a mixture of various particle sizes with different particle sizes ranging from large particles with a particle size of about 20-30 cm to small particles with a particle size are mixed. It depends on what you are doing.
Since the strength increases as the particle size increases and the strength decreases as the particle size decreases, the road embankment 10 </ b> A is formed by mixing a portion having a high strength and a portion having a low strength. .
Therefore, when the traffic load is repeatedly applied to the road embankment 10A composed of the crushed / rolled soil layer 12A, cracks are generated in the portions having a low strength, but the cracks are stopped in the portions having a high strength. The strength of the entire road embankment 10A is ensured, and the deformability of the entire road embankment 10A is also ensured.

FIG. 12 is a diagram showing the relationship between the shear strength and restraint pressure of a road embankment composed of a soil layer and a road embankment 10A composed of a crushed / crushed soil layer 12A. In FIG. 12, the horizontal axis indicates the restraint pressure, and the vertical axis indicates the shear strength.
As shown by the straight line D, the road embankment composed of soil layers has zero shear strength when the constraint force is zero, and the shear strength increases as the constraint force increases.
On the other hand, as shown by the straight line E, the road embankment 10A composed of the crushed and compacted soil layer 12A is consolidated by the solidifying material, and therefore the road embankment composed of the soil layer even if the binding force is zero. It has a shear strength greater than 10A.
Therefore, even if the road embankment 10A composed of the crushed and rolled soil layer 12A is used as it is as an embankment road without providing concrete pavement or asphalt pavement, it resists the traffic load that acts repeatedly with high shear strength. This is advantageous in obtaining an embankment road with excellent durability.

  In the above-described embodiment, the case where the vehicle-passing embankment is the road embankment 10A has been described. That is, when the vehicle-passing embankment is a track embankment, the road embankment 10A is a point where the track is laid via sleepers on the upper surface of the most crushing / rolling soil layer 12A that is stacked. Unlike the above embodiment, the other points are the same as those of the above embodiment.

Next, a second embodiment will be described with reference to FIGS.
In the second embodiment, a reinforcing structure for a vehicle passing embankment will be described together with a reinforcing method.
In the second embodiment, the vehicle passing embankment reinforced by the present invention is the road embankment 50A.
In this case, as shown in FIG. 3, a reinforcing layer 16 is provided to cover the top edge of the existing road embankment 50A and the slopes on both sides.
The reinforcing layer 16 includes a lower reinforcing layer 16A that covers the slopes on both sides of the existing road embankment 50A, and an upper reinforcing layer 16B that covers the top edge of the existing road embankment 50A and the top edge of the lower reinforcing layer 16A.
The lower reinforcing layer 16A and the upper reinforcing layer 16B are configured by stacking a plurality of crushed and compacted soil layers 12B and 12C.
More specifically, as shown in FIGS. 4A to 4C, the lower reinforcing layer 16 </ b> A is a first crushing and rolling soil that forms the lowest layer on the ground following the slope of the slope on both sides. The layer 12B-1 is formed, and the second crushed and compacted soil layer 12B-2 is formed thereon, and thus the crushed and compacted soil layers 12B-1, 12B-2, ... 12B-n Are stacked up to the vicinity of the top edge of the existing road embankment 50A.
The width of the reinforcing layer 16 is 2 to 4 m or more so that the backhoe and the vibration roller can work easily.
The upper reinforcing layer 16B is a first crushing / rolling layer that forms the lowest layer so as to cover the top edge of the existing road embankment 50A and the cresting / rolling earth layer 12B stacked on the slopes on both sides. The crushing layer 12C-1 is formed, and the second crushing / crushing earth layer 12C-2 is formed on the crushing / crushing earth layer 12C. Thus, the road embankment 10B in which the existing road embankment 50 is reinforced is constructed.

As in the first embodiment, each of the crushed and compacted soil layers 12B and 12C is a step of adding a solidifying material to the accumulated sediment excluding non-soil and stirring and mixing, and curing the mixed sediment A step of obtaining an initial solidified soil exhibiting a predetermined strength before the solidified material is completely solidified, a step of obtaining an embankment material by pulverizing the initial solidified soil to a predetermined particle size or less, It is provided by a step of spreading and rolling and a step of curing until the embankment material is completely solidified by the solidified material after the step of rolling and rolling.
That is, firstly, the solidified material is mixed with the sediment, and when the predetermined strength is developed before the solidified material is completely solidified, it is crushed and rolled up, and secondly, the pressed material is rolled. The crushed and compacted soil layers 12B and 12C are formed from sedimentary earth and sand, reflecting two points of solidifying the solidified material by curing later.
In addition, after the compaction and curing, the cement is completely solidified to complete the crushed and compacted soil layer, and then unwind and spread the embankment material of the crushed and compacted soil layer to be formed on it. It may be rolled and cured by rollers, but while rolling and curing the embankment material, the embankment material of the crushing and rolling soil layer provided on it is unrolled and laid, and rolled by a vibrating roller and cured. In order to shorten the construction period, it is possible to continuously build up the crushing / crushing soil layer in such a way that the curing period of the embankment material constituting the crushing / crushing soil layer is hung up. It will be advantageous.
And the pavement layer 14 is provided as needed on the upper surface of the crushing / rolling compaction layer 12C-2 located at the uppermost position.
According to the road embankment 10B reinforced in the present embodiment, the vertical direction such as subsidence due to the consolidation of the road embankment, etc., due to the properties of the crushed and compacted soil layers 12B and 12C, as in the first embodiment. This is advantageous in improving durability by suppressing horizontal deformation such as deformation and protrusion.
In addition, since the road embankment 50A is reinforced using sedimentary earth and sand, it is advantageous in reducing the cost of reinforcing the road embankment 50A.
In the above-described embodiment, the case where the vehicle passing embankment to be reinforced is the road embankment 50A has been described. However, the present invention is similarly applied to the case where the vehicle passing embankment is a track embankment, and similar effects can be obtained. Is done. That is, when the vehicle passing embankment is a track embankment, the road embankment 10A has a point where a track or the like is laid through sleepers on the upper surface of the crushing / rolling soil layer 12C positioned at the top. Unlike the case, the other points are the same as in the above embodiment.

Next, a third embodiment will be described with reference to FIGS.
In the third embodiment, a widening structure of a vehicle passing embankment will be described together with a widening method.
In the third embodiment, the vehicle passing embankment widened by the present invention is the road embankment 50B.
In this case, the widening layer 18 which covers the slopes on both sides of the existing road embankment 50B is provided.
As shown in FIG. 6, the widened layer 18 is formed by stacking a plurality of crushed and compacted soil layers 12D.
More specifically, as shown in FIG. 6 (A), the first crushed and compacted soil layer 12D-1 forming the lowermost layer is formed on the ground following the slope of the slopes on both sides. As shown to (B), 2nd crushing / crushing earth layer 12D-2 is formed on it, and as shown to FIG. 6 (C), crushing / crushing earth layer 12D-1 is formed in this way. , 12D-2,... 12D-n are stacked up to the top of the existing road embankment 50B to form the widened layer 18, and the existing road embankment 50B becomes the widened road embankment 10C.
And the upper surface of the crushing / crushing soil layer 12D-n positioned at the highest level or the upper surface of the crushing / crushing pressure layer 12D-n positioned at the top of the top of the existing road embankment 50A. And a pavement layer 14 is provided as necessary.

As in the first embodiment, each of the crushed / rolled soil layers 12D includes a step of adding a solidification material to the sedimentary soil excluding non-soil and stirring and mixing, and curing and solidifying the sedimentary soil that has been stirred and mixed. A step of obtaining an initial solidified soil exhibiting a predetermined strength before the material is completely solidified, a step of obtaining an embankment material by pulverizing the initial solidified soil to a predetermined particle size or less, It is provided by a step of rolling and a step of curing until the embankment material is completely solidified by the solidifying material after the step of rolling.
That is, firstly, the solidified material is mixed with the sediment, and when the predetermined strength is developed before the solidified material is completely solidified, it is crushed and rolled up, and secondly, the pressed material is rolled. The crushed and compacted soil layer 12D is composed of sedimentary earth and sand, reflecting two points of solidifying the solidified material by curing later.
In addition, it is advantageous in shortening the construction period if the crushing / crushing soil layer 12D is carried out with the process of curing and the crushing / crushing soil layer 12D is continuously constructed. This is the same as the previous embodiment.
According to the road embankment 10C widened according to the present embodiment, as in the first embodiment, vertical deformation such as subsidence due to consolidation of the road embankment, etc., due to the properties of the crushed and compacted soil layer 12D, This is advantageous in improving durability by suppressing horizontal deformation such as protrusion.
Moreover, since the road embankment 50B is widened using sedimentary sand, it is advantageous in reducing the cost of widening the road embankment 50B.
In the above-described embodiment, the case where the vehicle passing embankment to be widened is a road embankment, but the present invention is similarly applied to the case where the vehicle passing embankment is a track embankment, and similar effects are produced. The

Next, a fourth embodiment will be described with reference to FIGS.
4th Embodiment demonstrates the raising structure of the embankment for vehicle passage with the raising method.
In the fourth embodiment, the vehicle passing embankment raised by the present invention is a road embankment 50C.
In this case, as shown in FIG. 7, the raising layer 20 which covers the top end of the existing road embankment 50C and the slopes on both sides is provided.
In the present embodiment, the raised layer 20 includes a lower raised layer 20A that covers the slopes on both sides at a height to the top of the existing road embankment 50C, and an existing road embankment 50C that is narrower than the lower raised layer 20A. And an upper raised layer 20B provided on the lower raised layer 20A.
As shown in FIG. 8, the lower raised layer 20A is formed by stacking a plurality of crushed / crushed soil layers 12E, and the upper raised layer 20B is formed by stacking a plurality of crushed / crushed soil layers 12F.
More specifically, as shown in FIG. 8 (A), the first crushing / rolling soil layer 12E-1 forming the lowest layer is formed on the ground following the slope of the slope on both sides, and FIG. As shown to (B), the 2nd crushing / crushing earth layer 12E-2 is formed on it, and as shown to FIG. 8 (C), crushing / crushing earth layer 12E-1 is formed in this way. , 12E-2,... 12E-n are stacked up to the top of the existing embankment road 50C to form the lower raised layer 20A.
Then, on the existing road embankment 50C and the lower raised layer 20A, a first crushing / rolled earth layer 12F-1 forming the lowest layer is formed with a width narrower than that of the lower raised layer 20A on both sides. The second crushing / crushing soil layer 12F-2 is formed in this manner, and the crushing / crushing soil layers 12F-1, 12F-2,... The road embankment 10D is formed and the existing road embankment 50C is raised.
And the pavement layer 14 is provided in the upper surface of the crushing / rolling compaction layer 12F located in the uppermost layer as needed.

As in the first embodiment, each of the crushed and compacted soil layers 12E and 12F is a step of adding a solidifying material to the accumulated sediment excluding non-soil and stirring and mixing, and curing the mixed sediment A step of obtaining an initial solidified soil exhibiting a predetermined strength before the solidified material is completely solidified, a step of obtaining an embankment material by pulverizing the initial solidified soil to a predetermined particle size or less, It is provided by a step of spreading and rolling and a step of curing until the embankment material is completely solidified by the solidified material after the step of rolling and rolling.
That is, firstly, the solidified material is mixed with the sediment, and when the predetermined strength is developed before the solidified material is completely solidified, it is crushed and rolled up, and secondly, the pressed material is rolled. The crushed and compacted soil layers 12E and 12F are formed from the sedimentary earth and sand, reflecting two points of solidifying the solidified material by curing later.
In addition, it is advantageous in shortening the construction period if the crushing / crushing soil layers 12E, 12F are carried out with the process of curing and the crushing / crushing soil layers 12E, 12F are continuously constructed. This is the same as in the above embodiment.
According to the road embankment 10D raised in the present embodiment, as in the first embodiment, the vertical direction such as subsidence due to the consolidation of the road embankment, etc., due to the properties of the crushed and compacted soil layers 12E and 12F. This is advantageous in improving durability by suppressing horizontal deformation such as deformation and protrusion.
In addition, since the road embankment 50C is raised using the accumulated earth and sand, it is advantageous in reducing the cost of raising the road embankment 50C.
In the above-described embodiment, the case where the vehicle passing embankment is a road embankment has been described. However, the present invention is similarly applied to the case where the vehicle passing embankment is a track embankment, and similar effects are achieved.

Finally, a fifth embodiment will be described with reference to FIGS.
The fifth embodiment is a modification of the first embodiment, and the construction structure of the vehicle passing embankment according to the fifth embodiment will be described together with the construction method.
In the fifth embodiment, the vehicle passing embankment constructed according to the present invention is the road embankment 10E.
The road embankment 10 </ b> E includes a road body portion 30 and a reinforcing layer (road floor portion) 32 that covers the road body portion 30. That is, in the fifth embodiment, the road embankment 10E as a whole is not constructed with a crushed and compacted soil layer, but the road portion 30 that is the central portion is constructed with an improved soil layer, and the reinforcing layer 32 around it. Is constructed by crushing and rolling soil layers 12G and 12H.

As shown in FIG. 10 (A), the road body portion 30 is configured by stacking a plurality of improved soil layers 34.
The improved soil layer 34 is obtained by adding a solidifying material to the sedimentation soil excluding non-soil, stirring and mixing, and crushing to a predetermined particle size (for example, 40 cm) or less from the viewpoint of transportation and spreading after solidification. It is considered as a fill material.
Then, the embankment material is loaded on a dump truck, transported to a leveled place where the road embankment 10E is constructed, and the road embankment 10E is constructed over the entire length of the road embankment 10E to be constructed or for each predetermined section. Is unwound by a dump truck over the entire length of the predetermined section, spread by a backhoe, and rolled by a vibrating roller.
As shown in FIG. 10 (A), the first improved soil layer 34-1 forming the lowermost layer of the road body 30 is constructed in this way, and the second improved soil layer 34-2. ..., the n-th improved soil layer 34-n is constructed to constitute the road body portion 30.
Here, the sedimentary earth and sand excluding non-soil is the same as in the first embodiment, and the first non-soil is removed from the sedimentary earth and sand to form the first treated soil (first sedimentary earth and sand). Next, the second treated soil (second deposited soil) obtained by removing the second non-soil from the first treated soil.

The embankment material used for the improved soil layer 34 is fluid and solidifies to a level that keeps the plastic state (it can be transported and compacted in the same way as ordinary soil) when transporting with a dump truck is difficult. The material is solidified and improved and then crushed after solidification.
The embankment material used for the improved soil layer 34 is intended to be able to be transported and compacted, so the solidified material is mixed with the aim of a strength of the cone penetration index qc = 500 kN / m2.
In this case, there is no need for an upper limit or uniformity of strength, and it is sufficient to add a solidifying material to the second treated soil in the solidifying pit of the first embodiment and mix by a backhoe. After mixing, there is no problem even if left for a long time.
Therefore, the embankment material used for the improved soil layer 34, that is, the embankment material used for the road body portion 30, is a raw material (second treated soil and cement-based solidification material) as compared with the embankment material used for the crushed / rolled soil layer. Is the same, but the quality is quite uneven, and improved soil with low required specifications is sufficient, and it can be easily obtained at low cost compared with the embankment material used for the crushing and rolling soil layer.
In addition, the construction of the road body portion 30, that is, the process of stacking a plurality of improved soil layers 34 can be easily performed without being restricted in time as compared with the step of constructing a crushing / rolling soil layer. Can be constructed at a low cost.

Next, a reinforcing layer 32 that covers the road body 30 is provided.
The reinforcing layer 32 includes a lower reinforcing layer 32A that covers the slopes on both sides of the road body portion 30, and an upper reinforcing layer 32B that covers the top end of the road body portion 30 and the top end of the lower reinforcing layer 32A.
As shown in FIGS. 10B to 10C, the lower reinforcing layer 32A and the upper reinforcing layer 32B are configured by stacking a plurality of crushed and compacted soil layers 12G and 12H.
That is, the lower reinforcing layer 32A is formed with the first crushing / rolling soil layer 12G-1 forming the lowermost layer on the ground following the slopes of the slopes on both sides of the road body portion 30, and the first reinforcing layer 32G-1 is formed thereon. 2 crushing / crushing earth layers 12G-2 are formed, and a plurality of crushing / crushing earth layers 12G-1, 12G-2,... It is done.
Further, the upper reinforcing layer 32B forms a lowermost layer so as to cover the top end of the road body portion 30 and the top ends of the crushed and compacted soil layers 32B stacked on the slopes on both sides of the road body portion 30. A first crushing / crushing earth layer 12H-1 is formed, and a second crushing / crushing earth layer 12H-2 and a third crushing / crushing earth layer 12H-3 are sequentially formed thereon. In this way, a plurality of the crushed and compacted soil layers 12H are stacked so as to have an appropriate thickness, whereby the road embankment 10E is constructed.
And the pavement layer 14 is provided in the upper surface of the 3rd crushing / rolling compacted soil layer 12H-3 located in the uppermost layer as needed.

As in the first embodiment, each of the crushed and compacted soil layers 12G and 12H is a process of adding a solidifying material to the accumulated sediment excluding non-soil and stirring and mixing, and curing the mixed sediment A step of obtaining an initial solidified soil exhibiting a predetermined strength before the solidified material is completely solidified, a step of obtaining an embankment material by pulverizing the initial solidified soil to a predetermined particle size or less, It is provided by a step of spreading and rolling and a step of curing until the embankment material is completely solidified by the solidified material after the step of rolling and rolling.
That is, firstly, the solidified material is mixed with the sediment, and when the predetermined strength is developed before the solidified material is completely solidified, it is crushed and rolled up, and secondly, the pressed material is rolled. The crushed and compacted soil layers 12G and 12H are formed from sedimentary earth and sand, reflecting two points of solidifying the solidified material by curing later.
In addition, it is advantageous in shortening the construction period if the crushing / crushing soil layers 12G, 12H are carried out with the process of curing and the crushing / crushing soil layers 12G, 12H are continuously constructed. This is the same as in the above embodiment.
According to the road embankment 10E of the present embodiment, as in the first embodiment, vertical deformation such as subsidence due to consolidation of road embankment, etc., due to the properties of the crushed and compacted soil layers 12G and 12H, This is advantageous in improving durability by suppressing horizontal deformation such as sticking out.
Moreover, since the road embankment 10E is constructed using sedimentary earth and sand, it is advantageous for reducing the cost of the road embankment E.
In addition, instead of constructing the entire road embankment E with the crushing / crushing soil layers 12G and 12H, the road body 30 which is the central portion is constructed with the improved soil layer 34. In order to reduce the cost of road embankment E, it is possible to use improved soil that is considerably non-uniform in quality compared to the embankment material used for 12G and 12H, and that requires low specifications. It will be advantageous.
In the above-described embodiment, the case where the vehicle passing embankment is a road embankment has been described. However, the present invention is similarly applied to the case where the vehicle passing embankment is a track embankment, and similar effects are achieved.

10A, 10B, 10C, 10D, 10E ... Road embankment 12A, 12B, 12C, 12D, 12E, 12F, 12G, 12H ... Crushed and compacted soil layer 14 ... Pavement layer 16, 32 ... Reinforcement layer 16A, 32A: Lower reinforcement layer 16B, 32B ... Upper reinforcement layer 18 ... Widening layer 20 ... Raised layer 20A ... Lower raised layer 20B ... Upper raised layer 50A, 50B, 50C ... Existing road embankment

Claims (5)

A method for constructing a vehicle passing embankment,
The vehicle passing embankment is configured by stacking a plurality of crushed and compacted soil layers,
A step of adding a solidifying material to the sedimentary soil excluding non-soil and stirring and mixing the crushed and compacted soil layer, and a predetermined strength before curing and stirring the sedimented sediment A step of obtaining an initial solidified soil that has developed, a step of pulverizing the initial solidified soil to a predetermined particle size or less to obtain a embankment material, a step of squeezing the embankment material, spreading and rolling, and the rolling When providing by the curing step of completely solidifying the embankment material with the solidification material after the pressing step ,
While performing the curing process after the rolling process, the embankment material of the crushed and compacted soil layer provided thereon is crushed and spread on the embankment material performing the curing process. The step of leveling and rolling, and the curing step of completely solidifying the embankment material with the solidification material after the step of compacting, curing the embankment material that constitutes the plurality of crushing and rolling soil layers in this way The crushed and compacted soil layer was continuously constructed through the process.
The construction method of the embankment for vehicle passage characterized by the above-mentioned. A method for constructing a vehicle passing embankment,
By adding a solidifying material to the sedimentary sediment excluding non-soil, stirring and mixing, crushing to a predetermined particle size or less after solidification to make a banking material, squeezing and spreading the banking material, rolling A road body part construction step for obtaining a road body part by stacking a plurality of constructed improved soil layers,
Providing a lower reinforcing layer covering the slopes on both sides of the road body portion, and an upper reinforcing layer covering the top end of the road body portion and the top end of the lower reinforcing layer,
The lower reinforcing layer and the upper reinforcing layer are constituted by stacking a plurality of crushed and compacted soil layers,
A step of adding a solidifying material to the sedimentary soil excluding non-soil and stirring and mixing the crushed and compacted soil layer, and a predetermined strength before curing and stirring the sedimented sediment A step of obtaining an initial solidified soil that has developed, a step of pulverizing the initial solidified soil to a predetermined particle size or less to obtain a embankment material, a step of squeezing the embankment material, spreading and rolling, and the rolling When providing by the curing step of completely solidifying the embankment material with the solidification material after the pressing step ,
While performing the curing process after the rolling process, the embankment material of the crushed and compacted soil layer provided thereon is crushed and spread on the embankment material performing the curing process. The step of leveling and rolling, and the curing step of completely solidifying the embankment material with the solidification material after the step of compacting, curing the embankment material that constitutes the plurality of crushing and rolling soil layers in this way The crushed and compacted soil layer was continuously constructed through the process.
The construction method of the embankment for vehicle passage characterized by the above-mentioned. A method for reinforcing a vehicle passing embankment,
A lower reinforcing layer covering the slopes on both sides of the vehicle-passing embankment, and an upper reinforcing layer covering the top edge of the vehicle-passing embankment and the top edge of the lower reinforcing layer,
The lower reinforcing layer and the upper reinforcing layer are constituted by stacking a plurality of crushed and compacted soil layers,
A step of adding a solidifying material to the sedimentary soil excluding non-soil and stirring and mixing the crushed and compacted soil layer, and a predetermined strength before curing and stirring the sedimented sediment A step of obtaining an initial solidified soil that has developed, a step of pulverizing the initial solidified soil to a predetermined particle size or less to obtain a embankment material, a step of squeezing the embankment material, spreading and rolling, and the rolling When providing by the curing step of completely solidifying the embankment material with the solidification material after the pressing step ,
While performing the curing process after the rolling process, the embankment material of the crushed and compacted soil layer provided thereon is crushed and spread on the embankment material performing the curing process. The step of leveling and rolling, and the curing step of completely solidifying the embankment material with the solidification material after the step of compacting, curing the embankment material that constitutes the plurality of crushing and rolling soil layers in this way The crushed and compacted soil layer was continuously constructed through the process.
A method of reinforcing a bank passing embankment characterized by the above. A method for widening the embankment for passing vehicles,
A widening layer is provided to cover the slopes on both sides of the vehicle passing embankment,
The widening layer is formed by stacking a plurality of crushed and compacted soil layers,
A step of adding a solidifying material to the sedimentary soil excluding non-soil and stirring and mixing the crushed and compacted soil layer, and a predetermined strength before curing and stirring the sedimented sediment A step of obtaining an initial solidified soil that has developed, a step of pulverizing the initial solidified soil to a predetermined particle size or less to obtain a embankment material, a step of squeezing the embankment material, spreading and rolling, and the rolling When providing by the curing step of completely solidifying the embankment material with the solidification material after the pressing step ,
While performing the curing process after the rolling process, the embankment material of the crushed and compacted soil layer provided thereon is crushed and spread on the embankment material performing the curing process. The step of leveling and rolling, and the curing step of completely solidifying the embankment material with the solidification material after the step of compacting, curing the embankment material that constitutes the plurality of crushing and rolling soil layers in this way The crushed and compacted soil layer was continuously constructed through the process.
A method for widening the embankment for passing a vehicle. A method for raising the embankment for passing vehicles,
A lower raised layer covering the slopes on both sides of the vehicle passing embankment, and an upper raised layer covering the top edge of the vehicle passing embankment and the top edge of the lower raising layer,
The lower raised layer and the upper raised layer are constructed by stacking a plurality of crushed and compacted soil layers,
A step of adding a solidifying material to the sedimentary soil excluding non-soil and stirring and mixing the crushed and compacted soil layer, and a predetermined strength before curing and stirring the sedimented sediment A step of obtaining an initial solidified soil that has developed, a step of pulverizing the initial solidified soil to a predetermined particle size or less to obtain a embankment material, a step of squeezing the embankment material, spreading and rolling, and the rolling When providing by the curing step of completely solidifying the embankment material with the solidification material after the pressing step ,
While performing the curing process after the rolling process, the embankment material of the crushed and compacted soil layer provided thereon is crushed and spread on the embankment material performing the curing process. The step of leveling and rolling, and the curing step of completely solidifying the embankment material with the solidification material after the step of compacting, curing the embankment material that constitutes the plurality of crushing and rolling soil layers in this way The crushed and compacted soil layer was continuously constructed through the process.
The raising method of the embankment for vehicle passage characterized by the above-mentioned.

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