JP4263035B2 - Lightweight embankment structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lightweight embankment structure including a embankment constructed by stacking a plurality of layers formed by laying a plurality of foamed synthetic resin blocks, and more specifically, has high compression rigidity and good dismantling workability. It relates to a lightweight lightweight embankment structure.
[0002]
[Prior art]
Conventionally, embankment using a foamed synthetic resin block has been widely used for embankment on soft ground or sloped land, embankment in mountain building of a garden, and embedding and backfilling of underground structures.
[0003]
The embankment using such a foamed synthetic resin block generally has a low compression rigidity and is likely to be distorted. For example, a structure such as a railway is subjected to a large wheel load due to running of the train, and the rail of the railway. Since the allowable deformation amount is extremely small, its use has been discouraged.
[0004]
Therefore, Patent Document 1 discloses a structure for roads, railways, and the like that does not impair the lightness and workability, which are the characteristics of embankment using a foamed synthetic resin block, and has high compression rigidity and little deformation. The construction method of the lightweight embankment structure which can be used is also proposed.
[0005]
Specifically, the method for constructing a lightweight embankment structure using the foamed synthetic resin block is to form a hole penetrating from the front surface to the back surface of the foamed synthetic resin block so that the hole communicates in the vertical direction. The foamed synthetic resin blocks are stacked, concrete, mortar and the like are placed in the holes communicating in the vertical direction, and a pile body with high compression rigidity is built inside the embankment made of a laminate of foamed synthetic resin blocks. (See FIGS. 4 and 5 of Patent Document 1).
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 3-87417
[0007]
[Problems to be solved by the invention]
However, in the technique described in Patent Document 1, when disassembling the structure constructed by the construction method, it exists in a state of penetrating the plate surface of the foamed synthetic resin block on which the pile bodies are laminated. Therefore, unless the foamed synthetic resin block is destroyed, it cannot be removed from the pile body, and its dismantling workability is very poor.
[0008]
In addition, because many foamed synthetic resin blocks that are laminated are destroyed, crushed pieces are scattered around, and a large volume of waste is generated, which is also a problem from the viewpoint of environmental and resource conservation. It was what had.
[0009]
Therefore, an object of the present invention is to provide a lightweight embankment structure having high compression rigidity, good dismantling workability, and capable of reusing a foamed synthetic resin block after dismantling.
[0010]
[Means for Solving the Problems]
  In order to achieve the above-described object, the lightweight embankment structure of the present invention is a lightweight embankment structure including a embankment constructed by stacking a plurality of layers formed by laying a plurality of foamed synthetic resin blocks, and at least the embankment A part of the foamed synthetic resin block is composed of a composite block body in which a pile-shaped member having high compression rigidity is disposed in a non-adhered state in a recess formed from the front surface to the back surface formed on the side surface and / or corner portion. TheAnd the space shape of the hole formed when the concave portions formed in the foamed synthetic resin block are laid out so as to face each other has an inverted frustoconical shape portion, and the pile-shaped member has the space shape of the hole It has a corresponding inverted truncated cone shape partIt is characterized by that. In addition, the non-adhesion state here is the case where the said recessed part and the said pile-shaped member are non-adhesive states, and although it has adhere | attached, the said pile-shaped member is destroyed without destroying the said foaming synthetic resin block. The case where the adhesive state is weak enough to be peeled from the concave portion is also included.
[0011]
According to this lightweight embankment structure according to the present invention, at least a part of the embankment constructed by stacking foamed synthetic resin blocks is composed of a composite block body in which pile-shaped members having high compression rigidity are arranged. Therefore, since the embankment of the portion composed of the composite block body has high compression rigidity and a small amount of deformation, a portion that receives a strong compressive load or a portion that is likely to be distorted is composed of the composite block body. By this, the lightweight embankment structure which can be used conveniently also for structures, such as a road and a railroad, can be provided.
[0012]
  Further, according to the lightweight embankment structure according to the present invention, the pile-shaped member for increasing the compression rigidity is disposed in a non-adhered state in the concave portions formed in the side surface and / or the corner portion of the foamed synthetic resin block. Therefore, at the time of dismantling, it can be easily removed from the pile-shaped member without destroying the foamed synthetic resin block, so that the dismantling workability is good and the reused foamed synthetic resin block after dismantling Is also possible.
  Furthermore, according to the lightweight embankment structure according to the present invention, the space shape of the hole formed when the foamed synthetic resin blocks are laid out so that the respective concave portions face each other has an inverted truncated cone shape portion, Since the pile-shaped member has an inverted frustoconical shape corresponding to the space shape of the hole, a part of the load applied to the pile-shaped member can be borne by the foamed synthetic resin block, and the pile-shaped member of the load It is possible to prevent the foamed synthetic resin block from rising due to the resistance of the pile-shaped member even when buoyancy occurs in the foamed synthetic resin block due to the influence of groundwater or spring water. The stability of the embankment structure can be increased.
[0013]
Here, in the present invention, at least a part of the embankment is composed of a multilayer composite block body in which a plurality of layers of the composite block body are stacked in the vertical direction, and the multilayer composite block body is a pile shape of a lower composite block body. The member and the pile-shaped member of the upper composite block body may be arranged continuously in the vertical direction.
The lightweight embankment structure including the embankment having such a structure can efficiently receive the compressive load acting in the vertical direction by the pile-shaped members arranged in the vertical direction, and the lightweight embankment structure with higher compression rigidity. Can provide things.
[0014]
The foamed synthetic resin block for constructing the embankment has a rectangular parallelepiped shape in which each of the front surface and the back surface has a rectangular shape with a dimensional ratio of the long side to the short side of approximately 2 to 1, and the foamed synthetic resin having the rectangular parallelepiped shape. A concave portion extending from the front surface to the back surface may be formed at the four corners of the block, and a concave portion extending from the front surface to the back surface may be formed at the center of the opposite long side surfaces of the foamed synthetic resin block. In the same manner as described above, the foamed synthetic resin block is formed in a rectangular parallelepiped shape in which each of the front surface and the back surface is a rectangular shape having a dimensional ratio of the long side to the short side of approximately 2 to 1, and A concave portion extending from the front surface to the back surface is formed at the center of the short side surface facing to each other, and each of the foamed synthetic resin blocks is separated from the corners of the opposing long side surface by a quarter of the long side dimension. Also on position It may have a structure in which a recess extending from the front surface to the back surface. In the case of a foamed synthetic resin block having the structure as described above, when a bank is constructed by stacking a plurality of layers formed by laying a plurality of foamed synthetic resin blocks, a hole in which all the recesses easily penetrate vertically The foamed synthetic resin blocks can be stacked so as to form.
[0015]
Further, in the present invention, the foamed synthetic resin block may be made of foamed polystyrene. In this case, a lightweight bank including a bank having excellent lightness, water resistance, durability, and economy. A structure can be provided.
[0016]
Further, in the present invention, the pile-like member that is connected to the multilayer composite block body in the vertical direction may be configured by stacking a plurality of short pile-shaped members in the vertical direction. Moreover, the construction workability and dismantling workability of the embankment can be further improved.
In the above case, it is preferable to form engaging portions for preventing displacement when the short pile-shaped members are stacked in the vertical direction on the upper and lower surfaces of the short pile-shaped member.
[0017]
  Moreover, in the said invention, when the lower side of the said short and long pile-shaped member shall be formed in a taper, since the insertion operation to the recessed part of a foamed synthetic resin block becomes easy, it is preferable..
[0018]
Moreover, in the said invention, the said pile-shaped member is good also as a pile-shaped member made from a precast concrete, and in this case, the lightweight banking structure containing a bank with high compression rigidity can be constructed | assembled cheaply and very easily. it can.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the lightweight embankment structure according to the present invention will be described in detail with reference to the drawings.
[0020]
As shown in FIG. 1 or FIG. 2, the foamed synthetic resin block 1 used in the present invention is made of, for example, a foamed synthetic resin having a rectangular front surface 1a and back surface having a long-side to short-side dimension ratio of about 2: 1. 1b, it is shape | molded by the rectangular parallelepiped shape provided with two long side surface 1c, 1c which opposes, and two short side surface 1d, 1d which opposes each other.
In addition, the "substantially" said by "the above-mentioned dimension ratio of the long side and the short side is about 2 to 1" means that a hole penetrating in the vertical direction is formed when the foamed synthetic resin blocks are stacked in order to construct the embankment, If the pile-shaped member can be arranged without hindrance in the hole, it means that some error is acceptable, but when “substantially” is shown as a numerical value, the long side is divided by the short side. The value when the third decimal place of the value is rounded off is preferably 1.95 to 2.04, more preferably 1.96 to 2.03, and 1.97 to 2.02. More preferably, it is most preferably 1.98 to 2.01.
[0021]
Examples of the foamed synthetic resin used for molding the foamed synthetic resin block 1 include foamed polystyrene-based resins such as foamed polystyrene, foamed polyolefin-based resins such as foamed polyethylene and foamed polypropylene, foamed polyvinyl chloride, foamed phenolic resin, and foam. Various materials such as polyamide and foamed polyurethane can be used. Among them, it is preferable to use foamed polystyrene from the viewpoints of properties such as lightness, water resistance, durability and cost.
When using polystyrene foam, 10-35kg / m³Preferably having an apparent density of 15 to 25 kg / m³Those having an apparent density of 2 are more preferable. In addition, as the molding method, various molding methods such as in-mold molding and extrusion molding can be adopted, but it is usually preferable to use the in-mold molding method.
[0022]
The foamed synthetic resin block 1 shown in FIG. 1 has quarter-arc-shaped concave portions 2a extending from the front surface 1a to the back surface 1b at the four corners 1e, 1e, 1e, 1e, respectively, A half-arc-shaped recess 2b extending from the front surface 1a to the back surface 1b is also formed at the center of each of the side surfaces 1c and 1c.
[0023]
The foamed synthetic resin block 1 shown in FIG. 2 has a half-arc-shaped recess 2b from the front surface 1a to the back surface 1b at the center of the opposing short side surfaces 1d and 1d. A half-arc-shaped concave portion extending from the front surface 1a to the back surface 1b at a position separated from the corners 1e, 1e, 1e, 1e of the long side surface 1c, 1c by a quarter of the long side dimension L. 2b is formed.
[0024]
The rectangular solid foamed synthetic resin block 1 has a long side dimension of about 1000 to 3000 mm, a short side dimension of about 500 to 1500 mm, and a thickness dimension of about 100 to 1000 mm. The diameter of the concave portions 2a and 2b having the above-mentioned quarter arc shape or half arc shape formed in the foamed synthetic resin block 1 is suitably about 100 to 300 mm. It is preferable that the size of the foamed synthetic resin block 1 is appropriately determined within the above range in consideration of the convenience and efficiency of the lamination work of the foamed synthetic resin block 1 and the molding processability. Moreover, it is preferable that the diameter of the recessed parts 2a and 2b is also suitably determined within the said range according to the compression rigidity requested | required, the kind of pile-shaped member used, etc.
[0025]
As a preferable example, a foamed synthetic resin block 1 having a long side dimension of 2000 mm, a short side dimension of 1000 mm, and a thickness dimension of 500 mm is suitable. Examples of preferable diameters of the recesses 2a and 2b include 200 mm, but are not limited to these dimensions.
Moreover, if the formation position of the said recessed part 2a, 2b formed in the foaming synthetic resin block 1 is also the side surface and / or corner part of the foaming synthetic resin block 1, it will not be limited to said position at all, and recessed part 2a, 2b The number, the shape, and the like are not limited to those described above.
[0026]
In the case of constructing a lightweight embankment structure A used for railways using the foamed synthetic resin block 1, first, as shown in FIG. 3, for example, the ground G is first excavated to a predetermined depth, and the structure is then excavated there. The bottom slab concrete 3 is constructed for the purpose of uniformly transmitting the load to the ground G. The rigidity of the bottom slab concrete 3 is determined in consideration of the strength of the ground G and the load of the entire structure A to be constructed.
[0027]
Subsequently, the foamed synthetic resin block 1 is laminated in a plurality of layers on the bottom slab concrete 3. An example of this laminating method will be described below by taking as an example a case where the foamed synthetic resin block 1 shown in FIG. 1 is used.
[0028]
First, as shown by the solid line in FIG. 4, the plurality of foamed synthetic resin blocks 1 are arranged in one row with their long sides aligned with the vertical direction of FIG. A thing is laid in the horizontal direction in a plurality of rows in a close contact state to form a first layer. In this case, in two adjacent rows of the first layer, the foamed synthetic resin blocks 1 are laid so as to be shifted from each other by a half of the long side dimension. Thereby, the concave portions 2a and 2b formed in the other foamed synthetic resin block 1 adjacent to the concave portions 2a and 2b having the above-mentioned quarter arc shape or half arc shape formed in the foamed synthetic resin block 1. And a circular hole 4 is formed between the foamed synthetic resin blocks 1 and 1 as shown.
[0029]
Next, as indicated by the dotted line on the first layer, each foamed synthetic resin block 1 of the second layer has the long side direction orthogonal to the long side direction of the first layer to the left and right direction of FIG. Also in the second layer, two adjacent rows of the foamed synthetic resin blocks 1 are laid in close contact with each other with a shift of one half of the long side dimension. Thereby, the circular hole 4 formed between the adjacent foamed synthetic resin blocks 1 and 1 of the second layer communicates with the circular hole 4 between the foamed synthetic resin blocks 1 and 1 of the first layer. In the state, two layers of the foamed synthetic resin block 1 are laminated.
[0030]
Hereinafter, each odd layer above the third layer may be laid so as to vertically overlap each foamed synthetic resin block 1 of the first layer with the long side direction as the vertical direction in FIG. 4. Each even number layer or more may be laid so as to overlap vertically with each foamed synthetic resin block 1 of the second layer, with the long side direction as the left-right direction in FIG.
In addition, on the position where the laminated height of the foamed synthetic resin block 1 does not exceed 3 m, for example, 4-6 layers of foamed synthetic resin blocks 1 are stacked, and as shown in FIG. It is preferable to do.
[0031]
The embankment S with the foamed synthetic resin block 1 laminated as described above has a circular hole 4 formed in each layer in the vertical direction, and has a hole 4 penetrating the embankment S in the vertical direction. At the same time, the joints of the two layers of the foamed synthetic resin block 1 adjacent to each other in the upper and lower sides are not aligned, the strength of the embankment S as a whole is high, and the positional deviation of the foamed synthetic resin block 1 in the left and right direction is caused by vibration and the like. It will be difficult.
[0032]
When the rectangular parallelepiped foamed synthetic resin block 1 having the rectangular front surface 1a and back surface 1b having a dimensional ratio of the long side to the short side of approximately 2 to 1 is laminated as described above, the foamed synthetic resin A square-shaped space having the short side of the block 1 as one side is generated. In this case, the foamed synthetic resin block 1 having a rectangular parallelepiped shape may be cut into a half size in the longitudinal direction. Depending on the size of the embankment, a foamed synthetic resin block of another shape may be required particularly at the end of the embankment. In that case, the foamed synthetic resin block 1 or another foamed synthetic resin block is used. It may be cut into a corresponding shape and used, or a foamed synthetic resin block having a corresponding shape may be formed and prepared.
[0033]
When laminating the foamed synthetic resin block 1 on the bottom slab concrete 3 as described above, a pile-shaped member having high compression rigidity is formed in the circular hole 4 formed between the laminated foamed synthetic resin blocks 1 and 1. 6 is arranged in an unbonded state, and a composite block body M composed of the foamed synthetic resin block 1 and the pile-like member 6 is constructed on the bottom slab concrete 3 as shown in FIG.
[0034]
As an example of the method of constructing the composite block body M composed of the foamed synthetic resin block 1 and the pile-shaped member 6, the short precast concrete pile-shaped member 6 shown in FIG. A case will be described below as an example.
[0035]
The pile-shaped member 6 made of precast concrete shown in FIG. 5 has a diameter φ slightly smaller (several mm to several tens mm) than the diameter of the circular hole 4 formed between the foamed synthetic resin blocks 1 and 1. And the height H is 0.3 to 1.7 times the thickness dimension of the foamed synthetic resin block 1, preferably 0.4 to 1.6 times, more preferably 0.5 times or / and 1.5 times. 1 times the combination. And, on the upper surface of this precast concrete pile-shaped member 6, a convex portion 7 is formed as one engaging portion that prevents positional displacement when the pile-shaped member 6 is stacked upward, and on the lower surface, A concave portion 8 is formed as the other engaging portion into which the convex portion 7 formed on the lower pile-shaped member 6 is inserted. The precast concrete pile-shaped member 6 may be hollow or solid.
[0036]
A plurality of precast concrete pile-shaped members 6 having the above-mentioned shape and dimensions are prepared in advance, and the pile-shaped members 6 are disposed in the holes 4 formed together with the foamed synthetic resin blocks 1 and arranged in order. The next foamed synthetic resin block 1 is stacked on the resin block 1 and the next piled member 6 is repeatedly stacked on the piled member 6, and a composite block body made of the foamed synthetic resin block 1 and the piled member 6 ( A multilayer composite block body) M is constructed on the bottom slab concrete 3.
[0037]
When such a construction method of the composite block body (multilayer composite block body) M is adopted, the workability is excellent, and the pile-like member 6 existing around when the foamed synthetic resin block 1 is laid serves as a connector. As a result, the foamed synthetic resin block 1 is difficult to be displaced, and a metal fitting called a gibber for fixing the foamed synthetic resin blocks 1 used in the related art can be reduced or eliminated.
[0038]
In the case of the construction method as described above, the short precast concrete pile-like member 6 in particular is a pile-like member 6A (and / or 1) having a height of 0.5 times the thickness of the foamed synthetic resin block 1. It is most preferable to use a combination of a pile-like member 6C) having a height dimension of 5 times and a pile-like member 6B having a height dimension that is one time the thickness dimension of the foamed synthetic resin block 1. A construction method of the composite block body (multilayer composite block body) M will be described with reference to FIG.
[0039]
As shown in FIG. 6, the first layer of the foamed synthetic resin block 1 is laid on the bottom slab concrete 3, and the thickness of the foamed synthetic resin block 1 is formed in the hole 4 formed between the laid foamed synthetic resin blocks 1 and 1. First, a pile-shaped member 6A having a height of 0.5 times the size is first inserted, and a pile-shaped member 6B having a height that is one time the thickness of the foamed synthetic resin block 1 is stacked thereon (or inserted) (or Although not shown, a pile-like member 6C having a height 1.5 times the thickness of the foamed synthetic resin block 1 is inserted in place of the pile-like members 6A and 6B.
[0040]
Subsequently, the foamed synthetic resin block 1 of the second layer is stacked on the foamed synthetic resin block 1 of the first layer. In that case, the said pile-shaped member 6B (or pile-shaped member 6C) which protrudes from the upper surface of the foamed synthetic resin block 1 of a 1st layer fulfill | performs the effect | action as a positioning and a connection tool, The lamination workability | operativity will become favorable. .
[0041]
After the second layer of the foamed synthetic resin block 1 is laminated, the piled member 6B is inserted into the hole 4 in a state of being further stacked on the piled member 6B, and then the third layer of the foamed synthetic resin block 1 is inserted. And the insertion of the pile-like member 6B into the hole 4 are repeated, and the fourth layer of the foamed synthetic resin block 1 is laminated.
[0042]
In the hole 4 formed between the foamed synthetic resin blocks 1 and 1 of the fourth layer, a pile-shaped member 6A having a height of 0.5 times the thickness of the foamed synthetic resin block 1 is inserted as shown. The upper surface of the fourth layer of the foamed synthetic resin block 1 and the upper end of the pile-shaped member 6 are flush with each other.
[0043]
Subsequently, the intermediate floor slab concrete 5 is constructed above the foamed synthetic resin block 1 of the fourth layer which is flush. It is preferable that the intermediate floor slab concrete 5 is appropriately disposed at a position where the laminated height of the foamed synthetic resin block 1 does not exceed 3 m for the purpose of load distribution, uneven leveling and the like.
[0044]
A composite block body is formed on the intermediate floor slab concrete 4 in the same manner as the lamination of the foamed synthetic resin block 1 on the bottom slab concrete 3 and the insertion of the pile-like members 6A and 6B into the holes 4 to be formed. (Multilayer composite block body) M is constructed.
[0045]
The short precast concrete pile-shaped member 6 described above is preferable because it has high compression rigidity and can be manufactured economically, but is preferably a pile-shaped member made of a steel pipe, a pile-shaped member made of a resin pipe, or a resin-made pile member. A pile-shaped member or the like may be used, and when a pile-shaped member made of a steel pipe or a pile-shaped member made of a resin pipe is used, the inside of the pipe may be filled with concrete, mortar, or the like.
[0046]
Moreover, the upper and lower parts shown in FIG. 5 are changed to the columnar pile-shaped member 6 having the same outer diameter, and as shown in FIGS. 7 (a) and (b), the pile-shaped member whose lower side is tapered is formed. 6D can also be used. In this case, the pile-like member 6D can be smoothly inserted into the hole 4 formed between the foamed synthetic resin blocks 1 and 1, and a more composite block body (multilayer composite block body) The construction work of M can be made easy.
[0047]
Further, as shown in FIGS. 8 (a) and 8 (b), the hole 4 formed between the foamed synthetic resin blocks 1 and 1 is a hole 4A whose space shape has an inverted frustoconical portion, and the above pile When the shaped member 6 is a pile-shaped member 6E having an inverted frustoconical shape corresponding to the space shape of the hole 4A, the shape of the pile to the hole 4A formed between the foamed synthetic resin blocks 1 and 1 is similar to the above. The member 6E can be easily inserted, and a portion of the load applied to the pile-like member 6E can be borne by the foamed synthetic resin block 1, thereby preventing the load from being concentrated on the pile-like member 6E. In addition, even when buoyancy occurs in the foamed synthetic resin block 1 due to the influence of groundwater or spring water, the weight of the pile-like member 6E becomes resistance, and the foamed synthetic resin block 1 can be prevented from rising. Moreover, the stability of the lightweight embankment structure A can also be improved.
[0048]
In addition to the method of constructing the composite block body (multilayer composite block body) M composed of the foamed synthetic resin block 1 and the pile-shaped member 6 using the short pile-like members 6 of various shapes described above, for example, foamed synthetic resin After building a bank S composed of only the foamed synthetic resin block 1 by first laminating a plurality of blocks 1 (for example, four layers), the block 1 is elongated as a pile-shaped member 6 in a hole 4 penetrating the bank S in the vertical direction. A precast concrete pile-shaped member, a pile-shaped member made of steel pipe, a pile-shaped member made of resin pipe, or a resin-made pile-shaped member is used, and the long pile-shaped member 6 is inserted into the hole 4 from above. By doing so, you may construct | assemble the composite block body (multilayer composite block body) M which consists of the foaming synthetic resin block 1 and the pile-shaped member 6. FIG.
Further, after the bag-shaped release sheet is disposed in the hole 4 (including the hole 4A having the inverted truncated cone shape portion shown in FIG. 8) penetrating the embankment S in the vertical direction, the mold is released in the hole 4 After applying the agent, the pile-shaped member 6 is disposed in the hole 4 in a non-adhering state by placing concrete, mortar, or the like in the hole 4, and the composite composed of the foamed synthetic resin block 1 and the pile-shaped member 6. A block body (multilayer composite block body) M may be constructed.
[0049]
Subsequently, on both sides and the uppermost layer of the composite block body M constructed as described above, as shown in FIG. 3, walls are provided for the purpose of protecting the foamed synthetic resin block 1, distributing the load, and leveling the ground. The slab concrete 9 and the floor slab concrete 10 are constructed, and the gravel 11, the sleepers 12 and the rails 13 are laid on the floor slab concrete 10 by a normal railway track construction method, and the rails 14 are provided for use in the railway. The lightweight embankment structure A which can be completed is completed.
[0050]
The lightweight embankment structure A used for the railway constructed as described above is a pile-shaped member having a high compression rigidity for most of dynamic vertical loads such as a large wheel load caused by running of the train via the floor slab concrete 10. 6 can be shared, and the structure has a high compression rigidity and a small amount of deformation, and is basically composed of the embankment in which the foamed synthetic resin blocks 1 are laminated. It becomes a lightweight embankment structure with ease.
[0051]
Moreover, in order to share most of the load to the pile-shaped member 6 as described above, the foamed synthetic resin block 1 is not required to be as strong as the difference, and the use of the low-density (highly foamed) foamed synthetic resin block 1, Moreover, the use of the foamed synthetic resin block 1 using recycled raw materials is also possible, and a lightweight embankment structure A that can be economically used for railways can be constructed.
[0052]
Furthermore, in the structure A constructed as described above, the pile-like member 6 for increasing the compression rigidity is a recess 2a formed on the side surfaces 1c, 1d and / or the corner 1e of the foamed synthetic resin block 1. , 2b in a non-adhered state, the structure A can be easily detached from the pile-like member 6 without breaking the foamed synthetic resin block 1 when dismantling the structure A. In addition to being good, the disassembled foamed synthetic resin block 1 can be reused.
[0053]
Although the embodiment of the lightweight embankment structure according to the present invention has been described above, the present invention is not limited to the embodiment described above, and the technical idea of the present invention, that is, the compression rigidity of the embankment is increased. For the purpose of ensuring the ease of dismantling work, the pile-shaped member is disposed in a non-adhered state in a concave portion formed in the side surface and / or corner of the foamed synthetic resin block. Various modifications and changes are possible.
[0054]
For example, in the said embodiment, although the whole area of the embankment S was demonstrated about the lightweight embankment structure A which comprised the composite block body (multilayer composite block body) M of the foamed synthetic resin block 1 and the pile-shaped member 6, FIG. As shown in FIGS. 9 to 18, a part of the embankment may be composed of a composite block body of foamed synthetic resin blocks and pile-shaped members (the hatched portion in the figure).
[0055]
9 shows at least one layer including the lowest layer of the void in the widened embankment structure of the sloped land using the foamed synthetic resin block 101 as the fill material in the space between the front wall slab concrete 102 and the back sloped land 103 (FIG. 9). In the example of FIG. 9, the foamed synthetic resin block used for the lowermost layer and the layer immediately above it is shown as a composite block body (multilayer composite block body) 101a with a pile-shaped member, and FIG. FIG. 11 shows a foamed synthetic resin block used immediately after the back as a composite block body (multilayer composite block body) 101b with a pile-shaped member, and FIG. 11 shows the foamed synthetic resin block used for the uppermost layer as a pile-shaped member. A composite block body 101c is shown. Further, FIG. 12 shows that at least one layer including the lowermost layer (in the example of FIG. 12, the lowermost layer and the layer immediately above it) and the portion immediately after the back of the front wall slab concrete 102 are multilayer composite block bodies 101a and 101b. FIG. 13 shows a structure in which at least one layer including the lowermost layer (in the example of FIG. 13, the lowermost layer and the layer immediately above it) and the uppermost layer are formed as a multilayer composite block body 101a and a composite block body 101c. FIG. 14 shows the front wall slab concrete 102 immediately after the back and the uppermost layer as a multilayer composite block body 101b and a composite block body 101c, and FIG. 15 shows at least one layer including the lowermost layer (FIG. 15). In the example, the lowermost layer and the layer immediately above it), immediately after the rear surface of the front wall slab concrete 102 and the uppermost layer are the multilayer composite blocks 101a, 101b, It shows what was multiplexer block body 101c.
[0056]
FIG. 16 shows a foamed synthetic resin used immediately after the back of the wall slab concrete 104, 104 in a self-standing wall embankment structure using the foamed synthetic resin block 101 as a banking material in a space between the wall slab concrete 104, 104. The block is a composite block body (multi-layer composite block body) 101d, 101d with a pile-shaped member, and FIG. 17 is a composite block body 101e with a pile-shaped member, which is a foamed synthetic resin block used for the uppermost layer. Indicates. FIG. 18 shows a composite block body 101d, 101d, 101e immediately after the back surface of the wall slab concrete 104, 104 and the uppermost layer.
9 to 18, 105 is bottom slab concrete, 106 is intermediate floor slab concrete, 107 is floor slab concrete, and 108 is a road pavement formed on the floor slab concrete 107.
[0057]
【The invention's effect】
According to the lightweight embankment structure according to the present invention described above, at least a part of the embankment constructed by stacking the foamed synthetic resin blocks is composed of a composite block body in which pile-shaped members having high compression rigidity are arranged. Therefore, since the embankment of the portion composed of the composite block body has high compression rigidity and a small amount of deformation, a portion that receives a strong compressive load or a portion that is likely to be distorted or the like is included in the composite block body. By comprising, the lightweight banking structure which can be used conveniently also for structures, such as a road and a railroad, can be provided.
[0058]
  Further, according to the lightweight embankment structure according to the present invention, the pile-like member for increasing the compression rigidity is disposed in a non-adhered state in the concave portions formed in the side surface and / or the corner portion of the foamed synthetic resin block. Therefore, at the time of dismantling, the foamed synthetic resin block can be easily removed from the pile-shaped member without destroying the foamed synthetic resin block, and the dismantling workability is good. There is an effect that can be reused.
  Furthermore, according to the lightweight embankment structure according to the present invention, the space shape of the hole formed when the foamed synthetic resin blocks are laid out so that the respective concave portions face each other has an inverted truncated cone shape portion, Since the pile-shaped member has an inverted frustoconical shape corresponding to the space shape of the hole, a part of the load applied to the pile-shaped member can be borne by the foamed synthetic resin block, and the pile-shaped member of the load In addition to the effect of preventing the concentration of the foamed synthetic resin block, the pile-shaped member becomes a resistance and prevents the foamed synthetic resin block from rising even when buoyancy occurs in the foamed synthetic resin block due to the influence of groundwater or spring water. It is possible to increase the stability of the lightweight embankment structure.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a foamed synthetic resin block used for construction of a lightweight embankment structure according to the present invention.
FIG. 2 is a perspective view showing another example of a foamed synthetic resin block used for construction of a lightweight embankment structure according to the present invention.
FIG. 3 is a perspective view showing an embodiment of a lightweight embankment structure according to the present invention.
4 is a plan view showing an example of a state in which the foamed synthetic resin blocks in FIG. 1 are laminated. FIG.
FIG. 5 is a perspective view showing an example of a pile-shaped member used for construction of a lightweight embankment structure according to the present invention.
6 is a longitudinal sectional view showing an example of a method for constructing a composite block body using the foamed synthetic resin block of FIG. 1 and the pile-shaped member of FIG.
FIG. 7 is a conceptual longitudinal sectional view showing a method for constructing a composite block body using a tapered pile-shaped member, wherein (a) shows a pile-shaped member formed entirely tapered; When used, (b) shows the case where a pile-shaped member in which only the lower part is formed to be tapered is used.
FIG. 8 shows a case where the space shape of the hole formed between the foamed synthetic resin blocks has an inverted truncated cone shape portion, and the pile-shaped member has an inverted truncated cone shape portion corresponding to the space shape of the hole. It is a conceptual longitudinal cross-sectional view at the time of constructing | assembling a composite block body, Comprising: (a) shows the case where the whole is an inverted truncated cone shape, (b) shows the case where only the lower part is an inverted truncated cone shape, respectively.
FIG. 9 is a longitudinal sectional view schematically showing another embodiment of a lightweight embankment structure according to the present invention.
FIG. 10 is a longitudinal sectional view schematically showing still another embodiment of the lightweight banking structure according to the present invention.
FIG. 11 is a longitudinal sectional view schematically showing still another embodiment of the lightweight embankment structure according to the present invention.
FIG. 12 is a longitudinal sectional view schematically showing still another embodiment of the lightweight embankment structure according to the present invention.
FIG. 13 is a longitudinal sectional view schematically showing still another embodiment of the lightweight embankment structure according to the present invention.
FIG. 14 is a longitudinal sectional view schematically showing still another embodiment of the lightweight embankment structure according to the present invention.
FIG. 15 is a longitudinal sectional view schematically showing still another embodiment of a lightweight embankment structure according to the present invention.
FIG. 16 is a longitudinal sectional view schematically showing still another embodiment of the lightweight embankment structure according to the present invention.
FIG. 17 is a longitudinal sectional view schematically showing still another embodiment of the lightweight banking structure according to the present invention.
FIG. 18 is a longitudinal sectional view schematically showing still another embodiment of the lightweight embankment structure according to the present invention.
[Explanation of symbols]
1 Foamed synthetic resin block
1a Surface
1b Back side
1c Long side
1d Short side surface
2 recess
2a 1/4 arc-shaped recess
2b 1/2 arc-shaped recess
3 Bottom slab concrete
4 holes
4A Hole with inverted frustoconical shape
5 Intermediate floor slab concrete
6 Pile-shaped members
6A Pile-shaped member with a height of 0.5 times the thickness of the foamed synthetic resin block
6B Pile-shaped member with a height of 1 times the thickness of the foamed synthetic resin block
6C Pile-shaped member with a height 1.5 times the thickness of the foamed synthetic resin block
6D Tapered pile-shaped member
6E Pile-shaped member with inverted frustoconical shape
7 Convex part (engagement part) formed in pile-shaped member
8 Concave part (engagement part) formed in pile-shaped member
9 Wall concrete
10 Floor slab concrete
11 Gravel
12 sleepers
13 rails
14 Handrail
S bank
M composite block (multilayer composite block)
A Lightweight embankment structure
101 Foamed synthetic resin block
101a, 101b, 101c, 101d, 101e Composite block body (Multilayer composite block body)
102 Front wall slab concrete
103 Back slope
104 Wall concrete
105 Bottom slab concrete
106 Intermediate floor slab concrete
107 floor slab concrete
108 Road pavement

Claims (9)

In a light-weight embankment structure including embankment constructed by stacking a plurality of layers formed by laying a plurality of foamed synthetic resin blocks, at least a part of the embankment is on the side surface and / or corner of the foamed synthetic resin block. It is composed of a composite block body in which a pile-shaped member having high compression rigidity is disposed in a non-adhered state in a recess extending from the front surface to the back surface so that the recesses formed in the foamed synthetic resin block face each other. The space shape of the holes formed when laying on each other has an inverted frustoconical shape portion, and the pile-like member has an inverted frustoconical shape portion corresponding to the space shape of the holes, A lightweight embankment structure.   At least a part of the embankment is composed of a multilayer composite block body in which a plurality of layers of the composite block body are stacked in the vertical direction. The lightweight embankment structure according to claim 1, wherein the pile-shaped members are arranged continuously in a vertical direction. 3. The lightweight embankment structure according to claim 2, wherein the pile-like members that are connected to the multilayer composite block body in the vertical direction are formed by stacking a plurality of short pile-shaped members in the vertical direction. . The lightweight pile structure according to any one of claims 1 to 3, wherein the pile-shaped member is a precast concrete pile-shaped member. The lightweight embankment structure is a widened embankment structure of an inclined land using a foamed synthetic resin block as a embankment material in a space between a front wall and a back sloping ground, and the foamed synthetic resin used for at least one layer including the lowermost layer of the structure The lightweight embankment structure according to any one of claims 1 to 4, wherein the block is the composite block body. The lightweight embankment structure is a widened embankment structure of an inclined land using a foamed synthetic resin block as a embankment material in a space between a front wall and a back sloping ground, and the foamed synthetic resin block used immediately after the back of the front wall of the structure The lightweight embankment structure according to any one of claims 1 to 4, wherein the composite block body is used. The lightweight embankment structure is a widened embankment structure of a sloping land using a foamed synthetic resin block as a embankment material in a space between a front wall and a back sloping ground, and the foamed synthetic resin used for at least one layer including the uppermost layer of the structure The lightweight embankment structure according to any one of claims 1 to 4, wherein the block is the composite block body. The lightweight embankment structure is a self-standing wall embankment structure using a foamed synthetic resin block as a embankment material in the space between the walls, and the foamed synthetic resin block used immediately after the back of the wall of the structure is combined with the composite The lightweight embankment structure according to any one of claims 1 to 4, wherein the lightweight embankment structure is a block body. The lightweight embankment structure is a self-standing wall embankment structure using a foamed synthetic resin block as a embedding material in a space between walls, and the foamed synthetic resin block used for at least one layer including the uppermost layer of the structure The lightweight embankment structure according to any one of claims 1 to 4, wherein the lightweight embankment structure is a composite block body.

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