JP4680676B2 - Three-dimensional intersection construction method using backfilling material and construction material of fluidized soil - Google Patents

Description

The present invention relates to a three-dimensional intersection construction method using a backfill material and a construction material for fluidized soil .

  Conventionally, the construction of an intersection approach portion of a road generally includes a method of building a bridge so as to straddle one road (overbridge) or a method of forming an underground passage by digging one road in a tunnel form. In the method of hanging a bridge, the height of a predetermined bridge girder is secured and the vehicle is closed and construction is performed. On the other hand, in the method of digging one road in a tunnel form, excavation is currently being carried out using various methods.

  In addition to the construction methods described above, when searching for documents, the following construction methods have been invented and filed.

  Reference 1 is Japanese Patent Application Laid-Open No. 2001-207401 “Method for constructing a three-dimensional intersection”, in which light-weight embankment materials are stacked in both crossing directions of a three-dimensional intersection, a floor slab is constructed on the light-weight embedding material, and After placing piles, replacing the floor slab, removing the lightweight embankment material, excavating the underground part that opened the information along one of the two crossing directions, then on the underground part Remove the slopes other than the intersection of the built slabs.

  Reference 2 is Japanese Patent Laid-Open No. 2001-248101 “Construction of a three-dimensional intersection block and a three-dimensional intersection”, and a floor that inclines in accordance with the slope of the road surface of the planned three-dimensional intersection and a frame that gives a predetermined height to the floor A method for constructing a three-dimensional intersection using a three-dimensional intersection block and a three-dimensional intersection block, which is configured by a movement assisting section provided on the base section and the pedestal section.

  Document 3 is Japanese Patent Application Laid-Open No. 2004-257184 “Structure of solid road intersection and construction method thereof”, and a retaining wall is provided so as to construct an outer wall in consideration of the landscape by projecting to the vicinity of both ends of the intersecting road, Provided is a structure of a three-dimensional intersection of a road and a construction method thereof as a banking road in which one intersecting road is formed of a semi-underground box and the other road is formed to straddle the box.

JP 2001-207401 A

JP 2001-248101 A JP2004-257184A

  As for each of the above methods, in the case of a method of building a bridge on the road, the vehicle must be closed and the construction must be performed, which causes long-term traffic congestion. On the other hand, the method of digging one of the roads in a tunnel form increases the economic burden and leads to a longer construction period.

  Reference 1 can shorten the approach length of the structure, shorten the construction period, and save the construction cost. However, the steps such as floor slab installation, pile driving, removal of lightweight embankment material, excavation, etc. As a result, the lightweight construction material may have a large gap and water may enter, and the components of the lightweight construction material may be eluted, leaving doubts about durability. However, there are problems such as inability to effectively use excavated soil.

  Reference 2 can move and construct a three-dimensional intersection structure easily and quickly, but it is suitable for a small-scale three-dimensional intersection because it combines three-dimensional intersection structures to create a three-dimensional intersection, but it is not suitable for a large three-dimensional intersection. However, since the structures are separately combined, there are problems such as questions about strength and consistency.

  Although Reference 3 can provide a construction of a three-dimensional intersection on a road with a relatively small scale of excavation and its construction method, the construction section can be shortened, but the strength of the retaining wall remains unclear. There are problems such as making the process complicated by making a body.

  The present invention is based on the above circumstances, and the fluidized soil is self-supporting, can be constructed with strong three-dimensional intersection, and can create fluidized soil from construction generated soil. Construction method with features such as effective use of construction soil, speeding up construction, shortening construction period, high safety and resistance to natural disasters such as earthquakes Is to provide.

  The present invention enables effective use of construction generated soil, shortens the construction period, enables construction in consideration of the environment, and uses a fluidized treated soil that is self-supporting, thus providing high safety. It is intended that construction of a three-dimensional intersection will be possible.

Claim 1 is a problem in terms of safety, which is the characteristic of the poorly permeable layer and does not decrease the strength of infiltration of groundwater and does not drop the strength of rainwater and does not stagnate with the ground. It is a three-dimensional intersection construction method using backfilling material and construction material of fluidized treated soil that does not have any, in order to install a first step of excavating and flooring the ground and a box that secures the space of the crossing point A second step of installing the base material for the box, a third step of installing the box, a fourth step of installing the base material, and a wall material on the top of the base material, A fifth step of backfilling the periphery of the material with a backfill material of fluidized soil , making this backfill approximately the same height as the ground, and further installing a wall material on top of the foundation material a sixth step, using the construction material of the fluidized treated soil between the wall member A seventh step of applying Te secured, the eighth step of repeating the sixth step and the seventh step, after the formation of the predetermined height, by the upper or the box construction material of the fluidized treated soil This is a three-dimensional intersection construction method that uses a backfill material and construction material for fluidized soil to construct a road surface in the created space.

  In addition to the features of the invention of the first aspect, the present invention intends that the use of a reinforcing material enables construction of a stronger three-dimensional intersection.

Claim 2 is a problem in terms of safety, which is the characteristic of the poorly permeable layer and does not decrease the strength of infiltration of groundwater and does not decrease the strength of inhaling rainwater and does not stagnate with the ground. It is a three-dimensional intersection construction method using backfilling material and construction material of fluidized treated soil that does not have any, in order to install a first step of excavating and flooring the ground and a box that secures the space of the crossing point A second step of installing the base material for the box, a third step of installing the box, a fourth step of installing the base material, and a wall material on the top of the base material, A fifth step of backfilling the periphery of the material with a backfill material of fluidized soil , making this backfill approximately the same height as the ground, and further installing a wall material on top of the foundation material a sixth step, using the construction material of the fluidized treated soil between the wall member It repeated a seventh step of applying Te, and eighth step of placing the reinforcement at predetermined intervals in the construction material of the fluidized treated soil, and said sixth step and the seventh step and the eighth step After the formation of the ninth step and the predetermined height, a fluidized soil backfill material and a construction material for constructing a road surface in an upper portion of the fluidized soil construction material or a space secured by the box It is the three-dimensional intersection construction method used.

  The present invention intends to provide a smooth traffic network by constructing various three-dimensional intersections, to enable comfortable living, and the like.

Claim 3 is a three-dimensional intersection construction method using the backfilling material and construction material of fluidized soil according to claim 1 or claim 2, wherein the road surface is a paved road, a railroad, a sidewalk, a cycling road . This is a three-dimensional intersection construction method that uses the backfill material and construction material of the fluidized soil to be constructed.

Claim 1 is a problem in terms of safety, which is the characteristic of the poorly permeable layer and does not decrease the strength of infiltration of groundwater and does not drop the strength of rainwater and does not stagnate with the ground. It is a three-dimensional intersection construction method using backfilling material and construction material of fluidized treated soil that does not have any, in order to install a first step of excavating and flooring the ground and a box that secures the space of the crossing point The second process of installing the foundation material for the box, the third process of installing the box, the fourth process of installing the foundation material, and installing the wall material on the upper part of the foundation material, The fifth step of backfilling using the backfill material of fluidized soil , and backfilling approximately the same height as the ground, and the sixth step of installing the wall material on the upper part of the base material, and the wall surface a seventh step of construction using construction materials of fluidizing treated soil during the wood, the Step and the eighth step of repeating the seventh step, after the formation of predetermined height, to construct a road surface in a space secured by the upper or box construction material fluidization treated soil, fluidizing treated soil This is a three-dimensional intersection construction method using backfill material and construction material.

Therefore, according to the present invention, the construction generated soil can be effectively used, the construction period can be shortened, the construction in consideration of the environment is possible, and the use of the fluidized treated soil having the self-supporting property enables safety. It is possible to construct a high-level three-dimensional intersection.

Claim 2 is a problem in terms of safety, which is the characteristic of the poorly permeable layer and does not decrease the strength of infiltration of groundwater and does not decrease the strength of inhaling rainwater and does not stagnate with the ground. It is a three-dimensional intersection construction method using backfilling material and construction material of fluidized treated soil that does not have any, in order to install a first step of excavating and flooring the ground and a box that secures the space of the crossing point The second process of installing the foundation material for the box, the third process of installing the box, the fourth process of installing the foundation material, and installing the wall material on the upper part of the foundation material, The fifth step of backfilling using the backfill material of fluidized soil , and backfilling approximately the same height as the ground, and the sixth step of installing the wall material on the upper part of the base material, and the wall surface a seventh step of construction using construction materials of fluidizing treated soil between wood, flow A eighth step of placing the reinforcement at predetermined intervals in the construction material of treated soil, and the sixth step and the seventh step and ninth step of repeating the eighth step, forming a predetermined height after building a road surface in a space secured by the upper or box construction material fluidization treated soil, a crossing construction method using the backfill material and construction material fluidized treated soil.

  Therefore, in addition to the features of the invention of the first aspect, the present invention has effects such as enabling the construction of higher-strength three-dimensional intersections and preventing shear fracture by using a reinforcing material.

Claim 3 is a three-dimensional intersection construction method using the backfilling material and construction material of fluidized soil according to claim 1 or claim 2, wherein paved roads, tracks, sidewalks, and cycling roads are constructed on the road surface. It is a three-dimensional intersection construction method using the backfilling material and construction material of fluidized soil .

  Therefore, there are effects such as smooth traffic network maintenance and comfortable living by configuring various three-dimensional intersections.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a view showing a state where a ground G is excavated or floored in order to install a base material 2 for installing a box 1 such as a box culvert and a wall surface material 3. Excavation and flooring of the ground G are performed by backhoes, small machines, or manual construction, and then the shape of the ground G is adjusted. By adjusting the shape of the ground G, it is possible to prevent soil change, erosion, and the like due to rainfall during construction or natural disasters, and stable installation of the base material 2 becomes possible.

  Next, the base material 10 for boxes for installing the box 1 which secures the space of a crossing location is installed. The box base material 10 is installed on the ground G, and the box 1 is installed thereon (see FIG. 2). The box base material 10 is installed at a location that becomes the foundation of the box 1. The box base material 10 is made of concrete, a secondary concrete product, a steel material, and the like, and is installed by human power and concrete placement. It is desirable to excavate the ground G or shape the floor evenly before installing the box base material 10. As described above, the box 1 is installed to secure a crossing point (lower side) of the three-dimensional intersection, and includes a box type, an arch type, a retaining wall, and the like. Box 1 is made of concrete, concrete secondary products, steel, and other materials that are cast on-site, and is constructed using machinery necessary to construct concrete structures such as cranes and formwork. Although the box 1 can be used as a paved road as shown in FIG. 12, it can also be used for applications such as railways, sidewalks such as parks, and cycling roads.

  Next, the base material 2 is installed on top of the box base material 10 (see FIG. 3). The base material 2 is installed to support the wall surface material 3, and the base material 2 is installed by human power and concrete placement using concrete, secondary concrete products, steel materials, and the like. 9 and 10, the box 1 may be installed directly on the ground G instead of on the base material 2. In this case, it is desirable to excavate the ground G or shape the floor evenly before the foundation material 2 is installed. In addition, although it installs without attaching an anchor member normally to the base material 10 for boxes and the base material 2, it may also install and install an anchor member. In addition, FIG. 10 is an example which installed the base material 2 in the state of FIG.

After the installation of the base material 2, the wall surface material 3 is installed on the base material 2 (see FIG. 4). The wall material 3 is not particularly limited as long as it is made of concrete, a secondary concrete product, steel, wood, or the like. At the time of installation, depending on the material, it is installed using a machine that lifts human power and heavy objects. After installing the wall material 3 on the base material 2 and backfilling the periphery of the base material 2 and the box 1, the wall material is used to construct the fluidized soil construction material 41 described later between the wall materials 3. Reference numeral 3 denotes a structure capable of withstanding a lateral pressure, and any shape and material can be used as long as it can withstand the lateral pressure, and is not particularly limited. Incidentally, by placing the wall material 3, (it will be described later fluidizing treated soil) construction material fluidized treated soil enhanced 41 drying effect of preventing cracking of the construction material 41 in the fluidizing treated soil by rapid drying Prevention, strength reduction, and the like can be prevented. Moreover, it is also possible to provide a closing member on the wall surface material 3 so that the construction material 41 of the fluidized soil is not leaked from the wall surface material 3 to the outside. The box base material 10 shown in FIG. 2 and FIG. 3 is omitted from illustration because it disappears when it is backfilled in the backfill material 4 of the fluidized soil after FIG.

After the wall surface material 3 is installed, the periphery of the base material 2 and the box 1 is backfilled with the backfill material 4 of the fluidized soil . The backfilling material 4 of the fluidized soil is backfilled until it becomes substantially the same height as the ground G. In this case, by covering the base material 2 and the wall surface material 3 with the backfill material 4 of the fluidized soil , the strength surface can be stabilized and a strong ground can be secured.

Backfill 4 and construction material 41 used this time is the fluidized treated soil is not particularly limited as long as it has suitability as a return member 4 and construction material 41 fills the fluidizing treated soil. In this embodiment, a description will be given of a case where fluidized soil is used as the backfill material 4 and the construction material 41. Since the fluidized soil is a poorly permeable layer, moisture such as groundwater does not infiltrate from the ground, and rainwater or the like does not decrease in strength. Further, there is no problem with safety because there is no water stagnating with the ground.

After the backfill material 4 of the fluidized soil is backfilled to substantially the same height as the ground G, the fluidized soil construction material 41 is constructed between the wall surface materials 3 (see FIG. 5). In this case, for example, human work or fluidizing treated soil truck, pouring concrete pump vehicle machinery, the construction material 41 in the fluidizing treated soil is turned by a machine to inject construction material 41 in the fluidizing treated soil .

By using fluidized soil as construction material 41 , it is possible to use the soil generated locally (locally generated soil) as fluidized soil as it is, effectively using the locally generated soil, shortening the construction period, Cost reduction and environmental considerations are also possible. The fluidized soil is a mixture of locally generated soil with water, cement, etc., and has high fluidity and adhesiveness and high strength. Due to its high fluidity, it can be placed even in complicated and narrow construction sites, and it can be constructed without gaps. Subsidence of the ground after construction and fluctuation of the ground are very small. Further, the strength can be changed by changing the addition amount of the solidifying material and the ratio of the solidifying material, water and soil. In addition, when many organic substances etc. exist in soil at the time of backfilling, the kind of solidification material may be changed and strength may be changed. Since it is easy to control the solidification strength, re-construction after construction is possible, and it is suitable as the construction material 41 for fluidized soil .

In addition, when fluidized soil is used as backfill material 4 in ground with a high groundwater level, fluidized soil is highly sticky and is particularly resistant to liquefaction phenomena that occur during natural disasters such as earthquakes, and is a danger of liquefaction. Is significantly reduced. Due to this adhesive force, it is possible to prevent the occurrence of cavitation inside the road surface due to the erosion of underground seepage water, compared to the backfill material 4 of other fluidized soil . Moreover, since the solidification strength can be easily controlled as described above, it is possible to provide the construction material 41 of the fluidized soil with higher strength by using it together with the reinforcing material 5 described later. Moreover, by constructing the fluidized soil , a self-supporting structure can be formed only with the fluidized soil construction material 41, and since it is a self-supporting structure, the load on the wall surface material 3 is reduced, and the wall surface material 3 is The thickness can be reduced, and the simple installation and transportation of the wall surface material 3 and the simplification of the manufacturing process can be achieved. Since the blending can be facilitated, the homogenized production of fluidized soil, fluidity, adhesiveness, and strength can be freely controlled, and there is no need to change the blending method or change the processing method later. High practicality.

After the construction of the fluidized soil 41, the reinforcing material 5 is installed as required (see FIG. 6). The fluidized soil construction material 41 is laminated at a certain height, and then the reinforcing material 5 is installed. The reinforcing material 5 can be made of a steel material such as a rebar or a round steel, a lattice mesh, a geotextile or the like. For example, in the case of steel materials such as reinforcing bars and round steel, the steel material is placed after the backfill material 4 of the fluidized soil is dried, or the steel material is buried before the construction material 41 of the fluidized soil is dried. A method is conceivable. In the case of a grid-like mesh, geotextile, or the like, an installation method in which the reinforcing material 5 such as a grid-like mesh or geotextile configured in a planar shape is laid after the construction material 41 of the fluidized soil is dried may be considered.

By installing the reinforcing material 5, settlement, fluctuation, and destruction of the embankment constructed by the fluidized soil construction material 41 are suppressed. In particular, a large shear failure may occur inside the construction material due to a large earthquake or a load of water pressure due to infiltration of groundwater, rainwater, etc. In that case, the construction material 41 of the fluidized soil may collapse. After the collapse, it will not return. Therefore, by placing the reinforcing member 5, the prevention of shear failure of the construction material 41 in the fluidizing treated soil (shear reinforcement) it is possible, using the construction material 41 in a more integrated stable fluidized treated soil structure You can build things. In addition, the length of the reinforcing material 5 such as a steel material such as a reinforcing bar or a round steel, a lattice-like mesh, or a geotextile can be changed depending on the construction situation, and is not particularly limited. In addition, by connecting the reinforcing material 5 and the wall surface material 3, a more solid three-dimensional intersection can be performed.

After the construction material 41 of the fluidized soil is constructed and the reinforcing material 5 is installed as necessary, the wall material 3 is installed again. As shown in FIG. 7, by constructing the wall material 3 in the height direction, the fluidized soil construction material 41 can be supported by the wall material 3 when the fluidized soil construction material 41 is laminated. it can. After the construction of the wall surface material 3 in the height direction, the construction material 41 of the fluidized soil is input again.

After the wall material 3, the reinforcing material 5, and the fluidized soil construction material 41 are constructed to a predetermined height, the top end is finished with a cover soil in accordance with the actual application (see FIG. 8). For example, FIG.11 and FIG.12 is an example at the time of constructing the three-dimensional intersection of a road. The upper part of the construction material 41 of the fluidized soil is shaped, and the fence 7 is installed on the shaped fluidized soil construction material 41. By fixing the fence 7 to the wall surface material 3, a stronger installation can be achieved. Subsequently, the roadbed 6 is constructed, and each layer is formed in the order of the roadbed 61 and the surface layer 62 on the constructed roadbed 6 and the like, and the paved road at the upper part of the three-dimensional intersection is completed. Paved roads include expressways, general national roads, general roads, agricultural roads, streets, and the like. The roadbed 6, the roadbed 61, and the surface layer 62 are not particularly limited as long as they are materials that can construct paved roads, railways, sidewalks such as parks, cycling roads, and the like.

Next, the case where a railway (track) is constructed will be described. Since it is the same as the above until construction material 41 of fluidization processing soil is constructed, it is omitted. And the surface used as a foundation is shape | molded, the roadbed 6 is constructed, the roadbed 61 and the surface layer 62 are constructed, and a track is constructed.

  Similarly, for a sidewalk such as a park and a cycling road, the base surface is shaped, the roadbed 6 is constructed, a roadbed 61 and a surface layer 62 are constructed, and a sidewalk such as a park and a cycling road are constructed.

Then, the construction method of the backfilling material and construction materials (mountain sand, locally generated soil, crushed stone, etc.) that do not have the solidification performance of the fluidized soil will be described.

When it can be solidified with the passage of time as in the case of fluidized soil , since the earth pressure is not applied to the wall surface material 3 after solidification, it is not necessary to support the wall surface material 3 in the lateral direction. However, when backfilling or construction is performed using backfilling materials and construction materials (mountain sand, locally generated soil, crushed stone, etc.) that do not have solidification performance other than fluidized soil , the wall material is not solidified. 3 is always subjected to earth pressure, and the wall surface material 3 may collapse. In order to prevent the collapse, it is necessary to increase the thickness of the wall surface material 3 to increase the strength of the wall surface material 3 and to support the wall surface material 3 in the lateral direction.

  In this case, an anchor member is driven into the base material 2 to strengthen the ground contact with the ground G, and after the wall surface material 3 is laminated, a support member or the like is installed in order to support the wall surface material laterally. Can be considered.

Moreover, it is also possible to install as a wall material 3 what has a self-supporting property and a heavy feeling, such as H steel, a steel pipe, and a steel sheet pile, without installing the base material 2. If the soil condition is good (such as a hard ground), it is possible to use only the wall material 3 having a sense of independence and weight such as H steel, steel pipe, steel sheet pile, etc. without using the base material 2. In this case, it can be easily constructed, leading to a shortened construction period. In addition, if it is a soft ground, the base material 2 will be needed as mentioned above. When using the wall material 3 having a self-supporting and heavy feeling such as H steel, steel pipe, steel sheet pile, etc. without installing the base material 2, first excavating and shaping the ground G in the same manner as described above, Install the wall material 3 such as the steel pipe and steel sheet pile, and the side sheet pile. Then, the backfill material 4 and construction material 41 in the fluidizing treated soil fluidized treated soil was placed, performs installation of the reinforcing member 5 as necessary. The method of constructing paved roads, railroads, sidewalks such as parks, and cycling roads is the same as above.

It is a figure showing an example of the state which excavated the ground in this invention. It is the figure showing an example which installed the box foundation material and the box in this invention. It is a figure showing an example which installed the base material in this invention. It is the figure showing an example which installed the wall material in this invention and backfilled the backfill material of fluidization processing soil . It is a figure showing an example which laminated the construction material of fluidization processing soil in the present invention. It is a figure showing an example which installed the reinforcing material in this invention. It is the figure showing an example of the state which repeated FIG. 5, FIG. 6 to predetermined height in this invention. It is a figure showing an example of the state which built the solid intersection in the present invention. It is a figure showing an example which installed the box in the ground directly in this invention. It is the figure showing another example which installed the base material in this invention. It is a figure showing the actual usage example of the state which constructed | assembled the three-dimensional intersection in this invention. It is the figure showing the other other usage example of the state which constructed | assembled the three-dimensional intersection in this invention.

1 Box 10 Base material for box 2 Base material 3 Wall material 4 Backfill material of fluidized soil 41 Construction material of fluidized soil 5 Reinforcement material 6 Road floor 61 Roadbed 62 Surface layer 7 Fence C Car G Ground

Claims (3)

Fluidization treatment that does not cause a problem in terms of safety without infiltrating the moisture of groundwater, which is a characteristic of a poorly permeable layer, and does not decrease the strength of inhaling rainwater and does not stagnate with the ground It is a three-dimensional intersection construction method using soil backfill material and construction material,
The first process of excavating and flooring the ground,
A second step of installing a box base material for installing a box that secures the space of the crossing point;
A third step of installing the box;
A fourth step of installing the base material;
A fifth step of installing a wall surface material on top of the base material, backfilling the periphery of the base material with a backfill material of fluidized soil , and making this backfill approximately the same height as the ground ; ,
Furthermore, a sixth step of installing a wall material on top of the foundation material,
A seventh step of using a fluidized soil construction material between the wall materials;
An eighth step of repeating the sixth step and the seventh step;
After formation of the predetermined height, to construct a road surface in a space secured by the upper or the box construction material of the fluidized treated soil, overpass construction method using the backfill material and construction material of the fluidizing treated soil . Fluidization treatment that does not cause a problem in terms of safety without infiltrating the moisture of groundwater, which is a characteristic of a poorly permeable layer, and does not decrease the strength of inhaling rainwater and does not stagnate with the ground It is a three-dimensional intersection construction method using soil backfill material and construction material,
The first process of excavating and flooring the ground,
A second step of installing a box base material for installing a box that secures the space of the crossing point;
A third step of installing the box;
A fourth step of installing the base material;
A fifth step of installing a wall surface material on top of the base material, backfilling the periphery of the base material with a backfill material of fluidized soil , and making this backfill approximately the same height as the ground ; ,
Furthermore, a sixth step of installing a wall material on top of the foundation material,
A seventh step of using a fluidized soil construction material between the wall materials;
An eighth step of installing reinforcing materials at regular intervals on the construction material of the fluidized soil ;
A ninth step of repeating the sixth step, the seventh step and the eighth step;
After formation of the predetermined height, to construct a road surface in a space secured by the upper or the box construction material of the fluidized treated soil, overpass construction method using the backfill material and construction material of the fluidizing treated soil . In the three-dimensional intersection construction method using the backfilling material and construction material of fluidized soil according to claim 1 or claim 2,
A three-dimensional intersection construction method using a backfill material and a construction material of fluidized soil for constructing paved roads, tracks, sidewalks, and cycling roads on the road surface.

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