JP4293126B2 - Foamed resin block with planar material for embankment and lightweight embankment structure using the same - Google Patents

Description

  The present invention relates to a foamed resin block with a planar shape for embankment and a lightweight embankment structure using the same.

  As a lightweight embankment method for widening roads constructed on sloping ground or building retaining walls on sloping ground, the ground is formed by shaving the slope of the mountain, and the foundation is formed on the flat part at the bottom of the ground. In addition, the pillars made of H-shaped steel, etc. are erected at appropriate intervals on the foundation, and the outer wall material for imparting weather resistance is fixed to the outer surface side of the pillar, and between the outer wall material and the mountain-side inclined surface A lightweight embankment method in which foam resin blocks are stacked on top of each other is becoming widespread in place of embankment with soil (see, for example, Patent Document 1).

  However, in the light-weight embankment structure, it is necessary to use a large heavy machine, a large construction yard may be required for the construction of the pillars for the foundation and the construction of the outer wall material for the pillars. There are problems such as the need to block roads over the road, the need for mounting brackets to attach the outer wall material to the column, the number of parts increases, and the mounting work of the outer wall material becomes complicated there were.

  Therefore, in order to solve such a problem, a foamed resin block with a wall material attached to one side of the foamed resin block and a foamed resin block not attached with a wall material are used. A lightweight embankment structure is also proposed in which a foam resin block with a wall material is placed outside the material side, and a foam resin block without a wall material attached to the inner side of the embankment is constructed by stacking (for example, (See Patent Documents 2 and 3.)

  However, even in such a lightweight embankment method, the foamed resin block undergoes compression creep deformation due to secular change due to running of a large vehicle, etc., whereas the wall material hardly undergoes compression deformation, so that the overload is applied to the wall material. On the other hand, there is a problem that the wall material is broken and the wall material is broken, or the wall material falls off due to shear fracture of a fixture for fixing the wall material to the foamed resin block. Therefore, in order to solve these problems, considering the compression creep deformation of the foam resin block, the vertical size of the wall material is smaller than the vertical size on one side of the foam resin block to which the wall material is attached. There has also been proposed a configuration in which a gap that allows compression creep deformation of the foamed resin block is formed on both upper and lower sides of the wall material (see, for example, Patent Document 4).

  On the other hand, as a mounting structure of the wall material to the foamed resin block, for example, as described in Patent Document 2, a support member extending in the vertical direction with a space in the left-right direction is provided on the wall material mounting surface in the foamed resin block. The support member is made into a foamed resin block so that it does not fall forward by forming it in an embedded shape by insert molding etc. over the entire height of the block and forming the support member into a trapezoidal cross section that widens as it goes to the rear side A fixing member in which the wall member is fixed to the supporting member with screws or the like, or a supporting member having a downwardly concave shape extending in the left-right direction at the upper part of the mounting surface of the foamed resin block as described in Patent Document 3 Is provided in a buried shape, and the upper part of the wall material is fixed to the support member with a screw or the like, or as described in Patent Document 4, a claw is placed between the upper and lower foamed resin blocks. The engaged thereby supporting material is fixed, which is fixed to the wall member to the support member, and the like have been proposed.

JP 2004-162507 A Japanese Patent Laid-Open No. 11-140877 JP-A-11-140875 Japanese Patent Laid-Open No. 10-168909

This inventor discovered that there exist the following subjects as a subject in the case of constructing | assembling a lightweight embankment structure using the foamed resin block with a wall material as described in patent documents 2-4.
(1) In order to shorten the work period by minimizing the work at the site, the wall material should be fixed to the foamed resin block in advance at the factory or so that it can be easily constructed even when constructed at the site.
(2) Even if the foamed resin block undergoes compressive creep deformation, the wall material is configured so that a compressive load does not act on the wall material and damage to the wall material can be prevented.
(3) Even if the foamed resin block is subjected to compression creep deformation, the fixing member for fixing the wall material to the foamed resin block is sheared and broken, so that the wall material is not peeled off.
(4) Even if the middle portion in the height direction of the foamed resin block swells due to compression creep deformation, the lower end portion of the wall material is configured not to jump upward.

  However, in the inventions described in Patent Documents 2 and 3, the wall material can be fixed to the foamed resin block at a factory or the like, and can be easily fixed with a screw screw or the like even in the case of construction in the field. Since it is provided over the entire length of the block and the wall material is arranged on the entire surface of one side of the foam resin block, the overload is concentrated on the wall material and the support member due to the compression creep deformation of the foam resin block. Thus, there is a problem that the wall material and the support member are damaged or fallen off. Further, in the invention described in Patent Document 3, since the upper part of the wall material is only fixed to the support member embedded in the foamed resin block, when the middle part in the height direction of the foamed resin block swells, the wall material There is also a problem that the lower end of the projection protrudes outward.

  In addition, in the invention described in Patent Document 4, construction at a factory or the like is difficult, and after fixing the support material so as to protrude rearward on the back surface side of the wall material, lift the wall material with the support material, Because it is necessary to sequentially set the support material on the upper side of the foam resin block while adjusting the wall material to an appropriate position, it is necessary to align the wall material with the foam resin block in an unstable posture There is a problem that the construction work of the wall material at the site becomes complicated.

  An object of the present invention is to provide a foamed resin block with a planar material for embankment, which can be easily constructed, and can effectively prevent the breakage and peeling of the planar material and the protrusion of the lower end portion outward. It is to provide a light weight embankment structure.

The foamed resin block with a planar material according to the present invention is a foamed resin block with a planar material for embankment in which a planar material as a base of the outer wall or the outer wall is attached to a side surface of the foamed resin block, In the state where the foamed resin blocks with the planar material for embankment are piled up, at least the gap between the upper and lower planar materials to allow for the compression creep deformation of the foamed resin block is formed. Fixing having a fixing part set and arranged on the mounting surface of the planar material in the foamed resin block, and an anchor part embedded in the foaming resin block and restricting the movement of the fixing part in the out-of-plane direction of the mounting surface The fixing portion is provided on the foamed resin block with the fixing portion positioned at at least three locations of the upper portion and the lower portion of the mounting surface, and the planar material is fixed to the fixing portion of the fixing device with a stopper. Install the planar member to the mounting surface of the foamed resin block, thereby absorbing the compressive creep deformation of the foamed resin block gap between the planar member, attempts to act on the stop by the compression creep deformation of the foamed resin block The shear load is absorbed by deformation of the fixture or the foamed resin block .

  In this foamed resin block with a planar material, the planar material can be fixed in advance by fastening fasteners such as screw screws, nails, bolts and nuts to the fixing part of the fixture attached to the foamed resin block. It is possible to fix the surface material on the mounting surface of the foamed resin block and transport it to the site to build up, or transport the foamed resin block and the surface material to the site, and provide a good foothold on the site. A sheet material can be fixed on one side of the foamed resin block and then stacked. Further, the fixture can be retrofitted to the molded foamed resin block at the factory or on-site, or can be set in a mold and integrally formed with the foamed resin block at the time of molding the foamed resin block at the factory. The anchor portion of the fixing device can be of any configuration as long as it can regulate the movement of the mounting surface of the foamed resin block in the out-of-plane direction, that is, the direction in which the planar material is pulled out. When retrofitting a fixture, it is preferable that the anchor portion is sharpened in order to improve the assembling property to the foamed resin block.

  Further, in this foamed resin block with a planar material, a gap is formed between at least the upper and lower planar materials to allow compression creep deformation of the foamed resin block. Since the top load does not act at all or hardly acts on the shaped material, it is possible to effectively prevent the planar material from being damaged by the loaded load. In addition, since the planar material is fixed to the mounting surface of the foamed resin block in at least three places, the upper two places and the lower one place, the middle part in the height direction of the foamed resin block bulges outward due to the overload. Even when trying to do so, it is possible to effectively prevent the problem that the side edges of the planar material protrude outward.

  Here, a connecting portion for connecting the fixing portion and the anchor portion is provided on the fixing tool, and the connecting portion is arranged along any one of the four side surfaces adjacent to the mounting surface of the foamed resin block. The fixing tool can be fixed to the foamed resin block. Such a fixture can be fixed to the foamed resin block such that the connecting portion is disposed along either the left or right side surface or the upper or lower surface of the foamed resin block. Moreover, although it can also be integrally provided in the foamed resin block by insert molding or the like, it is suitable for retrofitting the foamed resin block molded in advance at a factory or construction site. When a fixing tool is retrofitted to the foamed resin block, it is preferable to form the anchor part in a sharp shape that can be inserted into the foamed resin block in order to improve the assembly of the anchor part to the foamed resin block.

  In addition, when the fixing device is integrally provided by insert molding or the like at the time of molding the foamed resin block, a connecting portion that connects the fixing portion and the anchor portion is provided on the fixing device, and the anchor portion and the connecting portion are foamed resin. It can be provided embedded in the block. In this case, even if the upper fixture of the foamed resin block arranged on the lower side and the lower fixture of the foamed resin block arranged on the upper side are arranged at positions where they overlap in the vertical direction, Since the foamed resin block disposed between the fixtures can be compressed and deformed, it is possible to prevent a large shearing load from acting on the stopper when the foamed resin block is subjected to compressive creep deformation due to an overload.

Furthermore, when the fixing tool is insert-molded with respect to the foamed resin block, if the projected area of the anchor portion and the connecting portion with respect to the upper surface or the lower surface of the foamed resin block increases, the shear load acting on the stopper accordingly increases accordingly. Therefore, it is preferable that the projected area of the anchor portion and the connecting portion with respect to the upper surface or the lower surface of the foamed resin block is set to ²⁰ to 100 cm ² . When a fixing tool is retrofitted to the foamed resin block, a plate-like member that can be easily deformed along with the compressive creep deformation of the foamed resin block is used as the fixing tool. It is preferable to configure so that the load does not act on the planar material as much as possible.

  The size of the fixing device in the left-right direction and the mounting position with respect to the foamed resin block are set to a size and mounting position where the fixing device of the foamed resin block adjacent to the upper and lower sides does not overlap in the state where the foamed resin blocks with planar materials are stacked. It is also preferable. That is, the foamed resin block is greatly compressed and deformed by the loading load as compared with the planar material, but the fixture is fixed to the planar material at the fixing portion and is embedded in the foamed resin block at the anchor portion. When the foamed resin block undergoes compression creep deformation, a large shearing load acts on the stopper between the foamed resin block and the planar material. In particular, when the fixtures of the foamed resin blocks adjacent in the vertical direction are arranged so as to overlap each other, the fixtures are stretched and the shearing force acting on the stopper increases. In the present invention, the upper and lower adjacent foam resin block fixtures are arranged so as not to overlap, the lower foam resin block fixture faces the upper foam resin block, and the upper foam resin block fixture is fixed. Since the tool is made to face the lower foamed resin block and the upper load acting on both fixing tools can be absorbed by the compression deformation of the foamed resin block, the shearing force acting on the stopper can be reduced, It is possible to effectively prevent breakage of the stopper and the fixture due to the shear load.

  As the planar material, as long as it is made of a hard plate-like member, any material can be adopted, and a metal plate, a synthetic resin plate, a hydraulic binder, etc. can be adopted. However, when a cement-based hardener with a specific gravity of 1.6 or less is adopted, it becomes possible to configure the planar material to be lightweight, improve the handleability of the planar material on site, and reduce the work load, Transportation costs can be reduced, and construction costs can be reduced because no heavy machinery is required. Moreover, it becomes possible to employ a thick surface material such as a rock pattern having excellent design properties, and the degree of design freedom can be improved.

  When a joint material is disposed between the planar materials, the joint material disposed between the adjacent planar materials is disposed on at least one side end surface of the planar material by installing a foamed resin block with the planar material. It is preferable to form a groove or a tapered surface for accommodating and holding so as not to protrude outward later.

  The lightweight embankment structure according to the present invention uses the foamed resin block with a planar material and the foamed resin block having no planar material, and the foamed material with the planar material faces outward on the outer surface of the embankment. A resin block, a foam resin block without a sheet material on the inner side of the embankment, and a stack of anti-lateral misalignment fittings with claws protruding at the top and bottom of the foam resin block are stacked and stacked. Is.

  In this lightweight embankment structure, the same effect as the foamed resin block with the planar material is obtained. In addition, as a foamed resin block arranged on the outer surface side of the lightweight embankment structure, a foamed resin block with a planar material is adopted, so there is no need to construct a support made of H-shaped steel etc. using heavy equipment etc. The planar material can be used as the outer wall as it is, and even when the planar material is used as the base material for the outer wall, the surface bracket can be used without embedding the pillars, etc. The outer wall can be easily fixed to the material.

  Here, it is preferable that the foamed resin blocks with planar materials are stacked and constructed so that the fixture does not come into contact. By stacking in this way, the foaming resin block with the planar material configured so that the fixing device of the foam resin block adjacent to the upper and lower sides does not overlap is set with a small shearing force acting on the stopper, and foaming is performed. It is possible to effectively prevent breakage of a stopper, a fixture or a planar material due to compression creep deformation of the resin block.

  According to the foamed resin block with a planar material according to the present invention, the planar material can be fixed in advance to the mounting surface of the foamed resin block at a factory or the like, and the planar material is attached to the mounting surface of the foamed resin block in the field. Can be fixed. Moreover, even when attaching a planar material to the foamed resin block at the site, it is easy to fix the planar material to the foamed resin block using fasteners such as screw screws, nails, bolts and nuts on a well-grounded ground. Since it is possible, the workability can be greatly improved. Further, even if the foamed resin block is subjected to compression creep deformation, the surface load is not applied at all or hardly applied to the surface material, so that damage to the surface material due to the load can be effectively prevented. Furthermore, since the planar material is fixed to the mounting surface of the foamed resin block in at least three locations of the upper two locations and the lower one location, even if the middle portion in the height direction of the foamed resin block is about to bulge outward, the surface It is possible to effectively prevent a problem that the side edge of the shaped material protrudes outward.

  Here, a connecting portion for connecting the fixing portion and the anchor portion is provided on the fixing tool, and the connecting portion is arranged along any one of the four side surfaces adjacent to the mounting surface of the foamed resin block. Fixing the fixing tool to the foamed resin block is suitable for attaching the fixing tool to a pre-molded foamed resin block. Moreover, when the anchor portion is formed in a sharp shape that can be inserted into the foamed resin block, the assembling property of the anchor portion to the foamed resin block can be improved.

  In addition, when the connecting part for connecting the fixing part and the anchor part is provided in the fixing tool, and the anchor part and the connecting part are provided in the embedded shape in the foamed resin block, the fixing tool on the upper side of the foamed resin block disposed on the lower side And the foamed resin block is compressed and deformed between the upper and lower fixtures even when the upper fixture and the lower fixture placed on the upper side are overlapped in the vertical direction. At the time of deformation, it is possible to prevent a large shearing load from acting on the stopper, and it is possible to effectively prevent damage to the stopper and the fixing tool due to the shearing load.

When the projected area of the anchor portion and the connecting portion with respect to the upper surface or the lower surface of the foamed resin block is set to ²⁰ to 100 cm ² , the strength and rigidity of the anchor portion and the connecting portion are sufficiently set while setting a small shear load acting on the stopper. It can be secured.

  When the size of the fixing device in the left-right direction and the mounting position with respect to the foamed resin block are set to a size and mounting position in which the foamed resin blocks adjacent to the top and bottom do not overlap in a state where the foamed resin blocks with planar materials are stacked. Further, the shearing force acting on the stopper can be further reduced to effectively prevent damage to the stopper, the fixing tool, and the planar material.

  As the planar material, when using a cement-based hardened material having a specific gravity of 1.6 or less, it becomes possible to configure the planar material to be lightweight, improving the handling of the planar material on site, The work load can be reduced, the transportation cost can be reduced, and the construction cost can be reduced because no heavy machinery is required. Moreover, it becomes possible to employ a thick surface material such as a rock pattern having excellent design properties, and the degree of design freedom can be improved.

  A groove or taper for accommodating and holding a joint material disposed between adjacent planar materials on the at least one side end surface of the planar material so as not to protrude outward after installation of the foamed resin block with the planar material. When the surface is formed, it is possible to effectively prevent the joint material from falling off and to prevent appearance deterioration due to the joint material protruding outward.

  According to the lightweight embankment structure according to the present invention, the same effect as the foamed resin block with a planar material can be obtained. In addition, as the foamed resin block disposed on the outer surface side, a foamed resin block with a planar material is adopted, so there is no need to construct a column made of H-shaped steel or the like using a heavy machine or the like. It can be used as an outer wall as it is, and even when using a planar material as a base material for the outer wall, the mounting bracket of the outer wall is embedded in the planar material in advance, so that it can be applied to the planar material without constructing pillars etc. The outer wall can be easily fixed. Moreover, since the horizontal misalignment prevention metal fitting with the claws projecting up and down is interposed at least between the upper and lower sides of the foamed resin block, it is possible to prevent the lightweight embankment structure from being damaged due to the lateral misalignment of the foamed resin block.

  Here, if the foamed resin block with a planar material is built up so as not to contact the fixing tool, the shearing force acting on the stopper is set as small as possible, and the stopper or fixing by compression creep deformation of the foamed resin block is set. It is possible to effectively prevent the breakage of tools and sheet materials.

  Embodiments of the present invention will be described below with reference to the drawings. The lightweight embankment structure of this embodiment is relatively small, such as building residential land for sloping land and flood damage countermeasures, widening for effective use of parking lots and land, because it does not require heavy machinery and can work with small turns. However, it can also be applied to widening roads and retaining walls.

  As shown in FIGS. 1 and 2, this lightweight embankment structure 1 is constructed on a support ground 3 formed by cutting an inclined surface 2 of a mountain, and is constructed on a flat portion 4 at the lower end of the support ground 3. Foamed resin stacked in multiple stages on the inclined surface 6 of the supporting ground 3 and the upper side of the base material 5 so that the base material 5 and the outer side of the valley side become a vertical plane passing near the end of the valley side of the base material 5 Block 7, sheet material 9 as an outer wall material attached to attachment surface 8 located on the outer surface side of foamed resin block 7 disposed on the valley side, and sheet material 9 as attachment surface 8 of foamed resin block 7 A fixing resin 10 and a stopper 11 for fixing, a joint material 28 (see FIG. 5) mounted between adjacent planar materials 9, and at least the upper and lower foamed resin blocks 7 are disposed, and the foamed resin block 7 to prevent lateral misalignment, and the uppermost foamed resin block 7 Concrete slab 13 which was constructed on the upper side, and a roadbed 14 was constructed in Tanigawa portion on the concrete slab 13, the asphalt pavement 15 was constructed in the upper surface substantially flush with the roadbed 14. A drainage material 16 is provided between the inclined surface 6 of the supporting ground 3 and the foamed resin block 7 so that rain water and the like that have entered between the foamed resin block 7 and the inclined surface 6 can be smoothly drained to the base material 5 side. It is configured.

  The size of the foamed resin block 7 can be arbitrarily set, but as shown in FIG. 3A, for example, a rectangular parallelepiped foamed resin block 7 having a length of 2 m, a width of 1 m, and a height of 0.5 m is used as a basic size. As shown in FIG. 1, the foamed resin block 7 is cut into a desired length as it is, and the foamed resin blocks 7 arranged vertically are moved in the front-rear direction and the left-right direction toward the inclined surface 6 of the support ground 3. It is constructed by shifting the position and stacking them in a staggered pattern. The foamed resin block 7 having such a size can be suitably employed because, for example, the weight per piece is 12 kg to 30 kg, and is easy to carry and excellent in workability of the lightweight embankment structure 1. As the material of the foamed resin block 7, a foam made of a synthetic resin such as polystyrene, polyurethane, or polyvinyl chloride can be used.

  The lateral misalignment prevention metal fitting 12 has a well-known structure in which claw portions 12a are formed so as to protrude on both upper and lower surfaces of a metal plate. The foam resin block is arranged adjacent to the upper and lower portions by biting the claw portions 12a into the foamed resin block 7. By interposing between the foamed resin blocks 7 arranged adjacent to each other between the left and right sides, the lateral displacement of the foamed resin blocks 7 to be stacked is prevented. Although this lateral displacement prevention metal fitting 12 is interposed at least between the foamed resin blocks 7 arranged adjacently in the vertical direction, it is interposed between the foamed resin blocks 7 disposed adjacently in the front-rear direction and the lateral direction to further enhance the lateral displacement. It can also be configured to prevent this. Moreover, it is also possible to integrate the foam resin blocks 7 arranged adjacent to each other with an adhesive instead of the lateral displacement prevention metal fitting 12 or in combination with the lateral displacement prevention metal fitting 12.

  As the planar material 9, a metal plate, a synthetic resin plate, a hydraulic binder, or the like can be adopted. However, in consideration of the use as an outer wall material, the specific gravity is 1.6 which is excellent in environmental resistance and portability. What consists of the following cementitious hardeners can be employ | adopted suitably.

  The planar material 9 is set so that at least the size in the height direction is slightly smaller than the size in the height direction of the mounting surface 8 of the planar material 9 in the foamed resin block 7, and between the planar materials 9 arranged vertically. The gap 20 is formed in the gap. Specifically, the size in the height direction of the planar material 9 is made 2 to 10% smaller than the size in the height direction of the foamed resin block 7, and the height of the foamed resin block 7 is increased between the upper and lower planar materials 9. A gap 20 having a size of 2 to 10% of the size in the vertical direction is formed, and even after compression creep deformation, the adjacent planar material 9 does not contact, or even if contacted, it is configured so that a large overload does not act. Yes. Further, the mounting position in the height direction of the planar material 9 with respect to the mounting surface 8 may be set in the middle of the mounting surface 8 in the height direction so that the gap 20 is allocated on both the upper and lower sides of the planar material 9. The upper edge or the lower edge of the sheet material 9 should be set at the same height as the upper edge or the lower edge of the mounting surface 8 so that the gap 20 is formed below or above the sheet material 9. Is also possible. In any case, the gap 20 that allows the compression creep deformation of the foamed resin block 7 is formed between the planar members 9 arranged above and below.

  The size in the left-right direction of the planar material 9 may be set to be the same as the size in the left-right direction of the foamed resin block 7, but is, for example, about 0.5 cm to 2.5 cm than the size in the left-right direction of the foamed resin block 7. By setting it small, a joint 30 extending in the vertical direction is formed between the planar members 9 adjacent to the left and right, and the joint material 29 can be loaded. The thickness of the planar material 9 can be arbitrarily set, but if it is too large, the portability of the planar material 9 is lowered, and if it is too small, sufficient strength and rigidity cannot be obtained, so it is set to 5 mm to 50 mm. It is preferable.

  Further, as shown in FIG. 5, the strip material 28 is formed on the four side end surfaces of the planar material 9, and the joint material 29 is loaded into the strip groove 28, thereby preventing the joint material 29 from falling off. As shown in FIG. 5, the groove 28 can be a groove with the foamed resin block 7 side opened, or a middle portion of the side end face of the planar material 9 so that the foamed resin block 7 side does not open. It is also possible to form it. Moreover, it replaces with the groove | channel 28, the taper surface which inclines toward the center part side of the foamed resin block 7 is formed in the side end surface of the planar material 9, and the planar material 9 arrange | positioned up and down to the back side. The joint may be formed so that the width becomes wider as it goes, and the joint material may be held between the tapered surfaces. The groove 28 and the tapered surface are preferably formed over the entire circumference of the planar material 9, but those provided on at least one side end surface are also within the scope of the present invention. The joint material 29 can be previously attached to the planar material 9 in a factory or the like, or can be loaded between adjacent planar materials 9 at a construction site.

  In this embodiment, the outer wall of the lightweight embankment structure 1 is configured by the planar material 9, but it is also possible to arrange the outer wall material outside the planar material 9 and use the planar material 9 as a base material for the outer wall material. In this case, a mounting bracket for fixing the outer wall material to the planar material 9 can be integrally provided. In the present embodiment, the planar material is fixed to the surface surrounded by the side edges of the foamed resin block 7 in the lateral direction (left-right direction) and the height direction, but the longitudinal direction (front-rear direction) and the height direction side are fixed. It is also possible to fix to the surface surrounded by the edge, and it is also possible to fix to the surface surrounded by the side edges in the horizontal direction and the vertical direction. Moreover, it is also possible to attach to the two surfaces of a corner or a ceiling surface. Furthermore, when fixing the planar material 9 to the surface surrounded by the side edges in the vertical direction and the height direction, as shown in FIG. 3 (b), a dummy joint is sandwiched between the substantially central portions in the longitudinal direction. It is also possible to attach the two planar members 9 with eight fixtures 10.

  As shown in FIGS. 2 to 6, the fixture 10 is a metal plate such as a stainless steel plate bent in a U-shaped cross section, and is fixed along the mounting surface 8 (front surface) of the foamed resin block 7. Part 21, connecting part 22 arranged along the upper surface or lower surface of foamed resin block 7, and anchor part 23 embedded in foamed resin block 7, and fixing part 21 is mounting surface 8 of foamed resin block 7. Four foamed resin blocks 7 are provided at the front part of one foamed resin block 7 so as to be arranged at two places on the left and right and two places on the left and right at the bottom. However, the fixture 10 is configured to be easily deformed with the compression creep deformation of the foamed resin block 7 so that the load due to the compression creep deformation of the foamed resin block 7 does not act on the planar material 9 as much as possible. If it is, what consists of arbitrary raw materials can be employ | adopted, and it can also be comprised with the injection molding goods which consist of synthetic resin materials other than a metal plate. In addition, at least three fixing tools 10 are provided such that the fixing portions 21 are located at at least three locations, ie, two upper portions and one lower portion of the mounting surface 8. Then, by fixing the planar material 9 to the mounting surface 8 of the foamed resin block 7 in at least three locations, the upper two locations and the lower one location, the height of the mounting surface 8 of the foamed resin block 7 due to the overload is increased. Even when the portion is about to bulge outward, it is possible to hold the planar material 9 stably in a substantially vertical plane by pressing it with the planar material 9.

  Further, in this embodiment, the connecting portion 22 is disposed along the upper surface or the lower surface of the foamed resin block 7, but the fixture 10 is disposed along the left surface or the right surface of the foamed resin block 7. It is also possible to fix to the block 7. However, in this case, a gap corresponding to the plate thickness of the connecting portion 22 is formed between the foamed resin blocks 7 arranged adjacent to each other on the left and right. It is preferable to form a hollow portion that is one step lower than the above-mentioned portion so that the foamed resin blocks 7 that are adjacently arranged on the left and right sides can be in close contact.

  A pair of left and right insertion holes 24 are formed in the upper and lower portions of the planar material 9 so as to correspond to the substantially central portions of the four fixing portions 21, respectively. The planar material 9 is attached to the mounting surface 8 of the foamed resin block 7. When the sheet material 9 is fixed to the mounting surface 8 of the foamed resin block 7, the sheet material 9 is set so as to be overlapped, and the stoppers 11 made of screw screws are inserted into the four insertion holes 24. The tool 11 is screwed to the fixing portion 21 of the fixing tool 10. However, it is also possible to fix the planar material 9 to the mounting surface 8 of the foamed resin block 7 by fixing a nut 11 to the fixing portion 21 by welding and fastening a stopper 11 made of a bolt member to the nut. A bolt head is welded and fixed to the portion 21 so that the bolt main body protrudes outward, and a nut member is screwed into the bolt main body to fix the planar member 9 to the mounting surface 8 of the foamed resin block 7. It is also possible.

  The fixing device 10 can be retrofitted to the foamed resin block 7 manufactured in advance at a factory or construction site, and is set in a mold when the foamed resin block 7 is molded, and integrated with the foamed resin block 7. It is also possible to insert-mold. In the case of insert molding, not only the anchor part 23 but also the connecting part 22 can be provided embedded in the foamed resin block 7.

  The anchor portion 23 is for restricting the movement of the fixture 10 toward the front side (outside of the mounting surface 8). In this embodiment, considering that the fixture 10 is retrofitted to the foamed resin block 7, Although formed substantially parallel to the fixing portion 21 arranged along the mounting surface 8, when the fixing tool 10 is insert-molded in the foamed resin block 7, the tip end side of the anchor portion 23 approaches the fixing portion 21. Further, the anchor part 23 may be disposed in an inclined manner, or a rib may be formed between the anchor part 23 and the connecting part 22 to improve the retaining performance of the fixture 10. In addition, when the fixture 10 is retrofitted, in order to improve the assembling property of the anchor portion 23 to the foamed resin block 7, as shown in FIG. In the case of insert molding, the shape of the anchor portion 23 can be arbitrarily set as long as it can prevent the fixture 10 from coming off.

  As shown in FIG. 2, the fixture 10 is a lower fixture for fixing the planar material 9 to the upper foamed resin block 7 in a state where the foamed resin blocks 7 adjacent in the vertical direction are arranged in a staggered manner. 10 and the upper fixture 10 for fixing the planar material 9 to the lower foamed resin block 7 are arranged so as not to contact the top and bottom, and when the foamed resin block 7 is subjected to compressive creep deformation due to an overload, It is prevented that the connection part 22 of the upper and lower fixtures 10 contacts and a big shearing load acts on the stopper 11. In addition, the connecting portions 22 of the upper and lower fixtures 10 are prevented from coming into contact with each other, and sufficient strength and rigidity can be ensured. Further, since the position is slightly shifted with a screw stopper, the area can be easily operated and sheared. The width in the left-right direction of the fixture 10 is set to 50 mm to 200 mm so as not to apply too much load. Moreover, the attachment position of the left-right direction of the fixing tool 10 arrange | positioned at the upper and lower sides of the foamed resin block 7 may be set the same, and may be set so that it may differ. When setting differently, even if the foamed resin blocks 7 are stacked vertically in the vertical direction, the fixtures 10 of the upper and lower foamed resin blocks 7 can be configured not to contact each other.

  Next, the construction method of the lightweight embankment 1 will be described. First, as shown in FIG. 1, the support ground 3 is constructed by cutting the slope 2 of the mountain, and the base material 5 is applied to the flat surface at the lower end of the support ground 3. Install.

  Next, as shown in FIGS. 1 and 2, the foamed resin block 7 to which the planar material 9 is fixed is disposed so that the outer surface of the planar material 9 is substantially vertical along the vicinity of the end of the support ground 3 on the valley side. As shown, the foamed resin block 7 without the sheet-like material 9 attached to the set height is sequentially stacked in a staggered manner in the left-right direction and the front-rear direction with the lateral displacement prevention metal fitting 12 interposed. With the prevention metal fittings 12 interposed, they are sequentially stacked in a staggered manner in the left-right direction and the front-rear direction to the set height. The planar material 9 may be fixed to the foamed resin block 7 at the site, or may be fixed in advance to the foamed resin block 7 at a factory or the like and transported to the site.

  In this way, after the foamed resin blocks 7 are stacked, the joint material 29 is loaded between the adjacent planar materials 9, and the concrete floor slab 13 manufactured at a factory or the like is laid on the upper surface of the uppermost foamed resin block 7. Then, the roadbed 14 and the asphalt pavement 15 are constructed thereon to construct the lightweight embankment structure 1. However, the concrete floor slab 13 can also be constructed by assembling a mold on the upper side of the uppermost foamed resin block 7 and placing concrete there.

  In addition, as shown in FIG. 7, the fitting parts 25 and 26 which can be fitted so that it may overlap on front and back are formed in the upper edge part and lower edge part of the planar material 9, and the lower edge in the upper planar material 9 is formed. A gap 20 that allows compression creep deformation of the foamed resin block 7 can also be formed between the fitting portion 25 and the fitting portion 26 at the upper edge portion of the lower planar material 9. Further, as shown by phantom lines in FIG. 7, as the foamed resin block 7 to which the planar material 9 is attached, the attachment surface 8 is configured by an arc surface that is depressed toward the substantially central portion side in the height direction, In the state where the foamed resin block 7 undergoes compression creep deformation and the middle portion of the mounting surface 8 bulges outward, the mounting surface 8 is configured to be in a substantially vertical direction, and bending stress acts on the planar material 9. It can also be configured not to. Furthermore, as shown in FIG. 7, a recessed portion 27 that is one step lower is formed in the foamed resin block 7 so as to correspond to the connecting portion 22 of the fixture 10, and the connecting portion 22 of the fixture 10 is formed along the bottom surface of the recessed portion 27. It is also possible to configure so that a gap is formed between the fixtures 10 arranged on the upper and lower foamed resin blocks 7 in a state where the foamed resin block 7 is subjected to compression creep deformation. In this case, even when the lower fixture 10 of the upper foamed resin block 7 and the upper fixture 10 of the lower foamed resin block 7 are arranged so as to overlap each other, the fixtures 10 are It is possible to prevent the stopper 11 from being broken by preventing contact. However, a recess is formed in the adjacent foam resin block 7 in correspondence with the mating fixture 10 so that the fixture 10 does not contact the adjacent foam resin block 7 so that a shearing force acts on the stopper 11. May be prevented.

  Since the second embodiment is configured in the same manner as in the first embodiment except that the configurations of the fixture 40 and the stopper 41 in the first embodiment are changed, the same members as those in the first embodiment have the same reference numerals. The detailed description is omitted.

  As shown in FIG. 8, the light weight embankment structure 1 </ b> A is similar to the light weight embankment structure 1 of the first embodiment. The foamed resin block 7 </ b> A to which the planar material 9 is fixed and the foamed resin block without the planar material 9. 7 are built up on the base material 5 constructed on the flat portion 4 on the support ground 3 and the inclined surface 2 of the support ground 3. However, the foamed resin block 7A in Example 2 is the foamed resin block with the planar material in that the fixture 40 is embedded in advance when the foamed resin block 7A is molded, as will be described later. 7 is different in configuration.

  As shown in FIGS. 9 to 11, a pair of right and left fixtures 40 are embedded in the upper and lower portions of the mounting surface 8 of the planar material 9 in the foamed resin block 7A to which the planar material 9 is fixed. The planar member 9 is fixed to the mounting surface 8 of the foamed resin block 7A by a stopper 41 made of a bolt fastened to the fixing member 40. Thus, in order to embed the fixture 40 in the foamed resin block 7A, when molding the foamed resin block 7A, the fixture 40 is set at the set position of the mold, and the fixture 40 is insert-molded. It will be. However, the assembly of the planar material 9 with respect to the foamed resin block 7A may be performed at a factory or the like, or may be performed on site.

  As shown in FIGS. 10 to 12, the fixture 40 is formed by forming an anchor portion 43 projecting outward at the base end portion of the rod-shaped member 42, and the stopper 41 is screwed to the front portion of the rod-shaped member 42. A fixing portion 45 in which a possible screw hole (female screw) 34 is formed is provided, and a connecting portion 46 that connects the fixing portion 45 and the anchor portion 43 is formed at the rear portion of the rod-like member 42.

  The fixture 40 can be manufactured by forming a screw hole 44 by machining in a molded product manufactured by casting or forging using a metal material, or a square plate-like shape at the base end of a metal pipe member. These members can be welded, and a screw hole 44 can be formed by machining in the front portion of the pipe member. The anchor portion 43 does not necessarily have to be formed in a rectangular plate shape such as a rectangle or a square. The anchor portion 43 can be projected to the outside of the rod-like member 42 to prevent the fixing tool 40 from coming off from the foamed resin block 7A, and can also be a bolt. Any shape can be adopted as long as it does not rotate together when the tool 41 is fastened. Moreover, when forming in disk shape, it is preferable to provide the rib etc. for co-rotation prevention. Furthermore, the fixing portion 45 and the connecting portion 46 do not necessarily have to be formed in a rod shape having a circular cross section, and may be configured in a rod shape having a polygonal cross section.

  A pair of left and right insertion holes 24 are formed in the upper and lower portions of the sheet material 9 so as to correspond to the substantially central portion of the fixing portion 45, respectively, and when the sheet material 9 is fixed to the mounting surface 8 of the foamed resin block 7A. In this case, the planar material 9 is set so as to overlap with the appropriate position of the mounting surface 8 of the foamed resin block 7A, and the stoppers 41 made of bolts are inserted into the four insertion holes 24, and the stoppers 41 are fixed. 40 screw holes 44 are fastened. However, instead of the screw hole 44 in the fixing portion 45, a male screw is provided in a protruding shape at the tip of the rod-like member 42 of the fixture 40, and the mounting surface of the foamed resin block 7A is inserted so that the male screw passes through the insertion hole 24. The planar material 9 may be fixed to the mounting surface 8 of the foamed resin block 7A by setting the planar material 9 to 8 and screwing the nut member into the male screw.

Similarly to the fixture 10 of the first embodiment, the fixture 40 is for fixing the planar material 9 to the upper foamed resin block 7A in a state where the foamed resin blocks 7A adjacent in the vertical direction are arranged in a staggered manner. The lower fixture 40 and the upper fixture 40 for fixing the planar material 9 to the lower foamed resin block 7A are provided so as not to be arranged up and down, and the foamed resin block 7A is compressed and creeped by an overload. When deformed, the compressive deformation of the foamed resin block 7A of the fixture 40 is promoted, and the shear load acting on the stopper 11 can be reduced. Further, the projected areas of the connecting portion 46 and the anchor portion 43 of the fixing device 40 on the upper surface or the lower surface of the foamed resin block 7 promote the compressive deformation of the portions of the foamed resin block 7A on the upper and lower sides of the connecting portion 46 and the anchor portion 43. In order to reduce the shear stress acting on the stopper 11, it is preferably set to ²⁰ to 100 cm ² . However, the mounting positions in the left-right direction of the fixtures 40 arranged above and below the foamed resin block 7A may be set to be the same or different.

Longitudinal sectional view of a lightweight embankment structure according to Example 1 Front view of main parts of the lightweight embankment structure (A) is a perspective view of a foamed resin block with a planar material, (b) is a perspective view of a foamed resin block with a planar material of another configuration. Front view of foamed resin block with planar material V-V line cross-sectional view of FIG. Perspective view of fixture FIG. 5 equivalent view of a foamed resin block with a planar material of another configuration Longitudinal sectional view of lightweight embankment structure according to Example 2 Front view of foamed resin block with planar material Fig. 5 equivalent diagram of foamed resin block with planar material Longitudinal section of foamed resin block with sheet material near the fixture Perspective view of fixture

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lightweight embankment structure 2 Inclined surface 3 Support ground 4 Flat part 5 Base material 6 Inclined surface 7 Foamed resin block 8 Mounting surface 9 Planar material 10 Fixing tool 11 Stopper 12 Lateral misalignment prevention metal fitting 12a Claw part 13 Concrete floor slab 14 Roadbed DESCRIPTION OF SYMBOLS 15 Asphalt pavement 16 Drainage material 20 Crevice 21 Fixing part 22 Connection part 23 Anchor part 23a Claw part 24 Insertion hole 25 Fitting part 26 Fitting part 27 Recessed part 28 Groove 29 Joint material 30 Joint 1A Lightweight embankment structure 7A Foamed resin block 40 Fixing tool 41 Stopping tool 42 Bar-shaped member 43 Anchor part 44 Screw hole 45 Fixing part 46 Connecting part

Claims (10)

A foamed resin block with a planar material for embankment in which a planar material that is the base of the outer wall or outer wall is attached to the side surface of the foamed resin block,
In the state where the foamed resin block and the planar material have the same outer size, the foamed resin block with the planar material for embankment is stacked, and at least a gap allowing the compression creep deformation of the foamed resin block is formed between the upper and lower planar materials. Set the size to
A fixing device having a fixing portion disposed on the mounting surface of the planar material in the foamed resin block, and an anchor portion embedded in the foaming resin block and restricting movement of the fixing portion in the out-of-plane direction of the mounting surface, The fixing part is provided in the foamed resin block by positioning it in at least three places of the upper part and the lower part of the attachment surface, respectively,
Fixed with the planar member to stop the fixing portion of the fixture Attach the planar member to the mounting surface of the foamed resin block,
The compressive creep deformation of the foamed resin block is absorbed in the gaps between the planar materials, and the shear load that tends to act on the stopper by the compressive creep deformation of the foamed resin block is caused by the deformation of the fixing tool or the foamed resin block. Absorb,
A foamed resin block with a planar material for embankment, characterized by that.   The fixture is provided with a connecting portion for connecting the fixing portion and the anchor portion, and the connecting portion is disposed along any one of the four side surfaces adjacent to the mounting surface of the foamed resin block. The foamed resin block with a planar material for embankment according to claim 1, wherein is fixed to the foamed resin block.   The foamed resin block with a planar material for embankment according to claim 2, wherein the anchor portion is formed in a sharp shape that can be inserted into the foamed resin block.   The foamed resin block with a planar material for embankment according to claim 1, wherein a connecting part for connecting the fixing part and the anchor part is provided in the fixture, and the anchor part and the connecting part are provided in an embedded shape in the foamed resin block. The foamed resin block with a planar material for embankment according to claim 4, wherein a projected area of the anchor portion and the connecting portion with respect to the upper surface or the lower surface of the foamed resin block is set to ²⁰ to 100 cm2.   The left and right size of the fixture and the mounting position with respect to the foamed resin block were set to a size and mounting position at which the foamed resin block adjacent to the upper and lower sides did not overlap in the state where the foamed resin blocks with the planar material were stacked. The foamed resin block with a planar material for embankment according to any one of claims 1 to 5.   The foamed resin block with a planar material for embankment according to any one of claims 1 to 6, wherein the planar material is a cement-based hardener having a specific gravity of 1.6 or less.   A groove for accommodating and holding a joint material disposed between adjacent planar materials on the side end surface of the planar material so as not to protrude outward after installation of the foamed resin block with the planar material, or The foamed resin block with a planar material for embankment according to any one of claims 1 to 7, wherein a tapered surface is formed.   A foamed resin block with a planar material according to any one of claims 1 to 8 and a foamed resin block having no planar material, the planar material facing outward on the outer surface of the lightweight embankment. A foamed resin block with shaped material, a foamed resin block without a planar material on the inside of the lightweight embankment, and a lateral displacement prevention metal fitting with protruding nails up and down are interposed at least between the top and bottom of the foamed resin block. A lightweight embankment structure that is built up and built. The lightweight embankment structure of Claim 9 constructed by stacking the foamed resin block with a planar material so that the said fixture might not contact.

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