JP6070048B2 - End structure of elastic pavement and its construction method - Google Patents

Description

  The present invention relates to an end structure of an elastic pavement and a construction method thereof, and more specifically, an end structure of an elastic pavement that can make peeling of the end of the elastic pavement less likely to occur with a simple configuration and the structure thereof. It relates to the construction method.

  Conventionally, an elastic pavement in which a hard aggregate, an elastic aggregate, and the like and a resin binder are mixed at a predetermined ratio is known. An elastic pavement formed by laying this elastic pavement material is excellent in performance of absorbing and attenuating impact and noise during traveling due to its elastic force and a structure having a gap.

  However, the end portion of such an elastic pavement warps on the upper surface side due to the curing shrinkage of the contained resin and the difference in the expansion amount due to the difference in the exposure temperature between the upper surface exposed as the road surface and the lower surface in contact with the base. It is easy to generate. For this reason, problems such as curling and peeling at the end of the elastic pavement are likely to occur over time.

  With respect to this problem, for example, in Patent Document 1, a pavement material in which a reinforcing material with an exposed end is inserted is laid in a concave portion provided on a paved road, and an exposed portion of the reinforcing material is further laid in the concave portion. By integrating with the pavement, the warping of the end of the elastic pavement is suppressed.

  However, in such an end structure of the elastic pavement, since the reinforcing material is only embedded in the pavement and the elastic pavement, the vertical movement of the reinforcing material cannot be sufficiently restricted. Moreover, delamination may occur between the reinforcing material and the elastic pavement. Therefore, there is room for improvement as a measure for preventing peeling at the end.

JP 2005-282068 A

  The objective of this invention is providing the edge part structure of the elastic pavement which can make it hard to produce peeling of the edge part of an elastic pavement with a simple structure, and its construction method.

The end structure of the elastic pavement according to the present invention for achieving the above object is to prevent warping at the end adjacent to the pavement of the elastic pavement laid on the base adjacent to the pavement. In the end structure of the elastic pavement in which the reinforcing material is embedded, the reinforcing material has a higher elastic coefficient than the elastic pavement, has a through-hole penetrating vertically, and is fixed to the base by a fixing member. Te, the adhesive strength between the said stiffener elastic pavement material constituting the elastic pavement into the through hole is filled is embedded in the elastic pavement, the reinforcing material and the elastic pavement material is said elastic pavement material The adhesive strength is higher than that of the substrate.

The elastic pavement construction method of the present invention includes an elastic pavement in which a reinforcing material for preventing warpage is embedded in an end adjacent to the pavement, and the elastic pavement is laid on a base adjacent to the pavement. In the body construction method, the elastic pavement having a higher elastic coefficient than the elastic pavement and having the through-hole penetrating vertically is fixed to the base by a fixing member, and then the elastic pavement is configured in the through-hole. Filling the elastic pavement material, embedding the reinforcing material in the elastic pavement, and bonding the elastic pavement material and the reinforcing material with higher adhesive strength than the elastic pavement material and the base. It is characterized by.

In another construction method of the elastic pavement according to the present invention, a reinforcing material for preventing warpage is embedded in an end adjacent to the pavement, and the elastic pavement is laid on the base adjacent to the pavement. In the construction method of the elastic pavement, after laying the elastic pavement material constituting the elastic pavement on the base with a predetermined thickness, the elastic coefficient is higher than that of the elastic pavement, and through holes that penetrate vertically The reinforcing material is placed on the laid elastic pavement having a predetermined thickness and fixed to the base by a fixing member, and then the elastic pavement is laid on the reinforcing material at a predetermined thickness. Then, the through hole is filled and the reinforcing material is embedded in an elastic pavement, and the elastic pavement and the reinforcing material are bonded to each other with higher adhesive strength than the elastic pavement and the base. It is characterized by that.

According to another embodiment of the present invention, an elastic pavement is constructed by embedding a reinforcing material for preventing warpage at an end adjacent to the pavement, and laying an elastic pavement on the base adjacent to the pavement. In the method of constructing the elastic pavement, a concave member is formed in the base in advance, and the reinforcing member having a through-hole penetrating vertically is installed in the concave portion with a higher elastic coefficient than the elastic pavement. Then, the elastic pavement material constituting the elastic pavement is filled in the through hole, the reinforcing material is embedded in the elastic pavement, and the elastic pavement material and the reinforcing material are Adhesive strength is made higher than that of the elastic pavement and the base to bond them.

In the end structure of the elastic pavement according to the present invention, since the reinforcing material having a higher elastic coefficient than the elastic pavement is fixed to the base, the vertical movement of the reinforcing material is sufficiently restricted. Since this reinforcing material has a through hole, the adhesion area between the reinforcing material and the elastic pavement increases. Since the adhesive strength between the elastic pavement and the reinforcing material is higher than the adhesive strength between the elastic pavement and the base, the end portion of the elastic pavement and the reinforcing material are firmly integrated. Therefore, while having the simple configuration as described above, it is possible to more effectively prevent the elastic pavement from peeling off as compared with the conventional case.

  It is also possible to make the reinforcing material into a plate shape and install the elastic pavement into the space between the reinforcing material and the base. As a result, the elastic pavement comes into contact with both sides of the reinforcing material, and the bonding area between the reinforcing material and the elastic pavement becomes larger. Therefore, the end portion of the elastic pavement and the reinforcing material are more firmly integrated, which is more advantageous for preventing the elastic pavement from peeling off.

  The through holes may be hexagonal, and the reinforcing material may have a honeycomb structure in which the hexagons are closely connected. Thereby, the adhesion area of a reinforcement and an elastic pavement can be enlarged further, and the edge part of an elastic pavement and a reinforcement can be integrated more firmly. Further, by adopting a honeycomb structure, it is possible to improve the durability and weight of the reinforcing material.

  At this time, a reinforcing material having a honeycomb structure can be placed in a recess formed on the base. Thereby, the thickness of the elastic pavement above the reinforcing material is made equal to the thickness of the portion of the elastic pavement where the reinforcing material is not embedded, and the portion where the reinforcing material is embedded and the portion where the reinforcing material is not embedded In between, the elastic force and durability of the elastic pavement can be homogenized. Therefore, it can suppress that the edge part of an elastic pavement deteriorates locally.

  The fixing member can be provided only on one side of the reinforcing material. Thereby, the operation | work which fixes a reinforcing material can be simplified and workability can be improved.

  At this time, one side of the reinforcing material can be brought into contact with the pavement and a fixing member can be provided on the other side. This increases the degree of freedom of the shape of the reinforcing material at the end of the elastic pavement, which is likely to be the starting point of the peeling of the elastic pavement. It becomes possible to increase the adhesive strength with the pavement.

  Fixing members can also be provided on two opposing sides of the reinforcing material. As a result, the effect of restricting the vertical movement of the reinforcing material by fixing the reinforcing material firmly to the base is further improved.

In the construction method of the elastic pavement according to the present invention, since the reinforcing material having a higher elastic coefficient than the elastic pavement is fixed to the base, the vertical movement of the reinforcing material can be sufficiently restricted. By filling the through-hole provided in the reinforcing material with the elastic pavement material, it is possible to sufficiently secure the bonding area between the reinforcing material and the elastic pavement. And since the elastic pavement and the reinforcing material are bonded with higher adhesive strength than the elastic pavement and the base, the end of the elastic pavement and the reinforcing material can be firmly integrated. . Therefore, although it is a simple construction method as described above, it is possible to more effectively prevent peeling of the elastic pavement constructed as compared with the conventional construction method.

  According to another elastic pavement construction method of the present invention, the elastic pavement is placed on the elastic pavement having a predetermined thickness after the elastic pavement is laid with a predetermined thickness. The body can be bonded not only to the upper surface of the reinforcement but also to the lower surface. Therefore, the adhesion area can be increased and the end portion of the elastic pavement and the reinforcing material can be integrated more firmly. Therefore, although it is a simple construction method as described above, it is possible to more effectively prevent peeling of the elastic pavement constructed as compared with the conventional one.

  According to still another method of constructing an elastic pavement of the present invention, a recess is formed in advance in a base, and a reinforcing material is installed in the recess, and then a through hole is filled with the elastic pavement constituting the elastic pavement. Since this reinforcing material is embedded in the elastic pavement, the thickness of the elastic pavement above the reinforcing material is made equal to the thickness of the portion of the elastic pavement where the reinforcing material is not embedded, and the reinforcing material is embedded. The elastic force and durability of the elastic pavement can be homogenized between the part and the part where the reinforcing material is not embedded. Therefore, it can suppress that the edge part of an elastic pavement deteriorates locally.

It is a perspective view which illustrates 1st Embodiment of the edge part structure of the elastic pavement of this invention. It is a top view which shows the modification of a reinforcing material. It is a perspective view which illustrates 2nd Embodiment of the edge part structure of the elastic pavement of this invention. It is a perspective view which illustrates 3rd Embodiment of the edge part structure of the elastic pavement of this invention. It is process explanatory drawing which illustrates the 1st construction method of the elastic pavement of this invention. It is process explanatory drawing which illustrates the 2nd construction method of the elastic pavement of this invention. It is process explanatory drawing which illustrates the 3rd construction method of the elastic pavement of this invention.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

  In the first embodiment of the end structure of the elastic pavement of the present invention illustrated in FIG. 1, the elastic pavement 1 is laid on the base 3 adjacent to the pavement 2. The elastic pavement 1 and the pavement 2 are connected at their end portions 1 a and 2 a, and a reinforcing material 4 for preventing warpage is embedded in the end portion of the elastic pavement 1.

  The elastic pavement 1 is made of, for example, an elastic pavement 1A configured by solidifying a hard aggregate and an elastic aggregate with a resin binder. As these hard aggregates, elastic aggregates, and resin binders, commonly used materials can be used. The pavement 2 is a general one such as an asphalt pavement in which hard aggregates are consolidated with asphalt.

  The reinforcing material 4 is composed of a plate-like material having a higher elastic coefficient than the elastic pavement 1. The adhesive strength between the reinforcing material 4 and the elastic pavement 1 is higher than the adhesive strength between the elastic pavement 1 and the base 3. The adhesive strength between the reinforcing material 4 and the elastic pavement 1 can be controlled by the material and surface treatment of the reinforcing material 4 and the material of the elastic pavement 1 (such as the type of adhesive component). In the first embodiment, the reinforcing material 4 includes a main body portion 6 provided with through holes 5 penetrating vertically, and a fixing portion 8 fixed to the base 3 by a fixing member 7 and integrally connected to the main body portion 6. And have. In the reinforcing member 4, the fixing portion 8 is fixed in contact with the base 3, while the main body 6 is installed at an interval from the base 3. And between the main-body part 6 and the base | substrate 3 and the inside of the through-hole provided in the main-body part 6, the elastic paving material 1A which comprises the elastic paving body 1 is filled, and the upper surface of the main-body part 6 is elastic paving material 1A. Covered.

  Thus, since the reinforcing material 4 is embedded in the elastic pavement 1 and the reinforcing material 4 having a relatively high elastic coefficient is fixed to the base 3 by the fixing member 7, the vertical movement of the reinforcing material 4 is sufficiently restricted. . Moreover, since the elastic pavement 1 and the reinforcing material 4 are in contact with the inner wall of the through hole 5 in addition to the upper surface and the lower surface of the reinforcing material 4, the bonding area can be increased. Therefore, the elastic pavement 1 and the reinforcing material 4 can be more firmly integrated by the excellent adhesive strength between the elastic pavement 1 and the reinforcing material 4 and the wide bonding area. Therefore, although it is a simple structure, peeling of the edge part 1a of the elastic pavement 1 can be prevented more effectively than in the past.

  As the reinforcing material 4, for example, a material that is smaller in temperature dependency than the elastic pavement 1 and that does not easily expand / contract due to heat or soften is used. In a material having a greater degree of change due to temperature than the elastic pavement 1, peeling between the reinforcing material 4 and the elastic pavement 1 is likely to occur due to a change in exposure temperature, and warping of the end of the elastic pavement 1 is caused. Not suitable for suppression. Specifically, the material used as the reinforcing material 4 is a metal such as steel, a hard resin, or the like. The thickness of the reinforcing material 4 (main body part 5) is, for example, about 0.5 mm to 5 mm.

  The reinforcing material 4 is provided in the range of 30 cm to 100 cm from the boundary surface between the elastic pavement 1 and the pavement 2, for example. This is because peeling of the end 1a of the elastic pavement 1 is likely to occur in this range.

  Although at least one through hole 5 may be provided, a plurality of through holes 5 illustrated in FIGS. 2A to 2C may be densely arranged from the viewpoint of increasing the bonding area. The shape of the through hole 5 may be various shapes such as a polygon (triangle, square, hexagon, etc.) as illustrated in FIGS. 2B to 2C in addition to the circle illustrated in FIG. I can do it.

The dimension of the through hole 5 is, for example, 2.5 mm or more of the average particle diameter of the aggregate of the elastic paving material 1A. Thereby, the elastic pavement material 1 </ b> A can be uniformly filled in the through holes 5. If the diameter of the through hole 5 is less than 2.5 times the average particle size of the aggregate of the elastic pavement 1A, the aggregate of the elastic pavement 1A is clogged into the through hole 5 and sufficiently fills the elastic pavement 1A. It becomes difficult to do. When the shape of the through hole 5 is a polygon, for example, the distance between two opposing sides forming the through hole 5 is set to 2.5 times or more of the average particle diameter of the aggregate of the elastic pavement 1A.

  As the fixing member 7, an anchor can be used as illustrated in FIG. In the first embodiment, a bolt hole is provided in the fixing portion 8 of the reinforcing member 4, and the reinforcing member 4 is fixed to the base 3 through an anchor through the bolt hole. Thereby, it can be firmly fixed with a simple structure.

  For example, the fixing portion 8 provided with the fixing member 7 is provided only on one side of the outer edge of the main body portion 6 of the reinforcing member 4. Thereby, the operation | work which fixes the reinforcing material 4 can be simplified and workability can be improved. In particular, in the first embodiment, the fixing portion 8 is provided on one side facing the one side of the reinforcing material 4 that contacts the pavement 2. Thereby, the freedom degree of the shape of the reinforcement material 4 in the outermost edge part of the elastic pavement 1 which is easy to become the starting point of peeling of the elastic pavement 1 increases. For example, the reinforcing material 4 can be installed on the upper side of the elastic pavement 1 with a gap from the base 3 or the through-hole 5 can be provided to secure the bonding area. Therefore, the adhesive strength between the reinforcing material 4 and the elastic pavement 1 can be increased even at the end of the elastic pavement 1, which is more advantageous for preventing the elastic pavement 1 from being peeled off.

  The end structure of the elastic pavement 1 of the present invention is not limited to the first embodiment, and can be, for example, the second and third embodiments described below. Note that configurations not particularly mentioned in the description of the second and third embodiments are the same as those in the first embodiment. The various arrangements described in the first embodiment can be similarly performed in the second and third embodiments.

  In the second embodiment illustrated in FIG. 3, the fixing member 7 is provided on two opposing sides of the reinforcing material 4. In 2nd Embodiment, the fixing | fixed part 8 is provided in two sides parallel to the longitudinal direction of the elastic pavement 1 of the reinforcement material 4, and the end surface of the main-body part 6 installed upwards and spaced apart from the base | substrate 3 is paved. It comes in contact with the body 2. Thereby, the reinforcing material 4 is firmly fixed by the base 3, and the effect of restricting the vertical movement of the reinforcing material 4 is further improved. Further, since the main body portion 6 installed at a distance from the base 3 is in contact with the pavement 2, it is elastic in most of the endmost portion of the elastic pavement 1 that is likely to be a starting point of peeling of the elastic pavement 1. The pavement 1 adheres to both surfaces (upper surface and lower surface) of the reinforcing material 4 and the inner peripheral surface of the through hole 5, so that high adhesive strength can be obtained. Therefore, it is advantageous to prevent peeling of the end 1a of the elastic pavement 1.

  In 3rd Embodiment illustrated in FIG. 4, the main-body part 6 in which the through-hole 5 of the reinforcement material 4 is provided does not have plate shape, but has the shape which becomes convex at the lower surface side. Further, a recess 9 is formed in the base 3, and a protruding portion is fitted on the lower surface side of the reinforcing material 4. Thereby, since the through-hole 5 is extended in the depth direction, the adhesion area can be further increased. Therefore, the adhesion area between the inner peripheral surface of the through hole 5 and the elastic pavement 1 is increased, and the adhesion strength can be further increased.

  In particular, in the third embodiment illustrated in FIG. 4, the through hole 5 has a hexagonal column shape, and the main body portion 6 of the reinforcing member 4 has a honeycomb structure in which the hexagonal columns are connected in a close-packed manner. Therefore, the adhesion area can be further increased, which is advantageous for preventing the end 1a of the elastic pavement 1 from being peeled off. By adopting such a honeycomb structure, the strength of the reinforcing material 4 with respect to the vertical load is greatly improved, which greatly contributes to improving the durability of the reinforcing material 4. Along with this, the material can be thinned, so that the weight of the reinforcing material 4 can be reduced.

  Next, the construction method of the present invention for laying the elastic pavement 1 adjacent to the pavement 2 will be described with reference to FIGS.

  First, as illustrated in FIG. 5A, the reinforcing material 4 is placed on a portion corresponding to the end portion of the elastic pavement 1 adjacent to the pavement 2 and fixed to the base 3 by the fixing member 7. Next, as illustrated in FIG. 5B, the through hole 5 is filled with the elastic pavement material 1A. Next, as shown in FIG. 5C, the elastic pavement material 1 </ b> A is spread on the upper surface of the reinforcing material 4 to embed the reinforcing material 4 in the elastic pavement 1.

  Thereby, the reinforcing material 4 can be fixed to the base 3 and the vertical movement of the reinforcing material 4 can be sufficiently restricted. Since the elastic pavement material 1A is filled in the through hole 5 provided in the reinforcing material 4, a sufficient bonding area between the reinforcing material 4 and the elastic pavement 1 can be secured, and the end of the elastic pavement 1 can be secured. The portion and the reinforcing material 4 can be firmly integrated. Therefore, although it is a simple construction method, peeling of the end 1a of the elastic pavement 1 can be more effectively prevented as compared with the conventional method. This construction method is applied, for example, when forming the end structures of the first and second embodiments described above.

  As another aspect of the present invention, there is another construction method illustrated in FIGS.

  First, as illustrated in FIG. 6A, the elastic paving material 1 </ b> A is laid on the base 3 with a predetermined thickness. The predetermined thickness is a thickness that fills the gap between the base 3 and the main body 6 that is installed above the base 3 of the reinforcing material 4 to be placed with a space therebetween. Then, as illustrated in FIG. 6B, the reinforcing material 5 is placed on the laid elastic pavement material 1 </ b> A having a predetermined thickness, and is fixed to the base 3 by the fixing member 7. Next, as illustrated in FIG. 6C, the elastic paving material 1 </ b> A is laid on the reinforcing material 4 with a predetermined thickness to fill the through holes 5, and the elastic paving material 1 </ b> A is provided on the upper surface of the reinforcing material 4. The reinforcing material 4 is embedded in the elastic pavement 1 by laying down.

  In this construction method, the elastic pavement material 1A can be easily filled evenly in the gap between the main body 6 of the reinforcing material 4 and the base 3, so that the elastic pavement 1 and the reinforcing material 4 can be more reliably bonded. . Therefore, it is advantageous for preventing peeling of the end 1a of the elastic pavement 1. This construction method is applied, for example, when forming the end structures of the first and second embodiments described above.

  As this invention, there also exists the construction method illustrated to Fig.7 (a)-(d).

  First, as illustrated in FIG. 7A, the recess 9 is formed in the base 3 in advance. Next, as illustrated in FIG. 7B, the reinforcing material 4 is installed in the recess 9 and fixed to the base 3 by the fixing member 7. Next, as illustrated in FIG. 7C, the through hole 5 is filled with the elastic pavement material 1A. Next, as illustrated in FIG. 7D, the elastic pavement material 1 </ b> A is spread on the upper surface of the reinforcing material 4 to embed the reinforcing material 4 in the elastic pavement 1.

  In this construction method, the thickness of the elastic pavement 1 above the reinforcing material 4 is made equal to the thickness of the portion of the elastic pavement 1 where the reinforcing material 4 is not embedded, and the portion in which the reinforcing material 4 is embedded and the reinforcing material It is possible to homogenize the elastic force and durability of the elastic pavement 1 with a portion where the 4 is not embedded. Therefore, it can suppress that the edge part of the elastic pavement 1 deteriorates locally. This construction method is applied, for example, when forming the end structure of the third embodiment described above.

DESCRIPTION OF SYMBOLS 1 Elastic pavement 1A Elastic pavement material 1a End part 2 Pavement 2a End part 3 Base 4 Reinforcement material 5 Through-hole 6 Main part 7 Fixing member 8 Fixing part 9 Recessed part

Claims (10)

In the end structure of the elastic pavement in which a reinforcing material for preventing warpage is embedded in an end adjacent to the pavement of the elastic pavement laid on the base adjacent to the pavement,
The reinforcing material has an elastic coefficient higher than that of the elastic pavement, has a through-hole penetrating vertically, is fixed to the base by a fixing member, and constitutes the elastic pavement in the through-hole. And the reinforcing material is embedded in an elastic pavement, and the adhesive strength between the elastic paving material and the reinforcing material is higher than the adhesive strength between the elastic paving material and the base. Body end structure.   2. The elastic pavement according to claim 1, wherein the reinforcing material is plate-shaped, is installed above the base with a space, and the elastic pavement is filled in a space between the reinforcing material and the base. End structure.   The end structure of the elastic pavement according to claim 1, wherein the through hole has a hexagonal shape, and the reinforcing member has a honeycomb structure in which the hexagonal shape is closely connected.   The end structure of the elastic pavement according to claim 3, wherein the reinforcing material having the honeycomb structure is installed in a recess formed in the base.   The end structure of the elastic pavement according to any one of claims 1 to 4, wherein the fixing member is provided only on one side of the reinforcing material.   6. The end structure of an elastic pavement according to claim 5, wherein one side of the reinforcing material is in contact with the pavement and the fixing member is provided on the other side.   The end structure of the elastic pavement according to any one of claims 1 to 4, wherein the fixing member is provided on two opposite sides of the reinforcing material. In the construction method of the elastic pavement in which a reinforcing material for preventing warpage is embedded in the end adjacent to the pavement, and the elastic pavement is laid on the base adjacent to the pavement,
After the elastic member having a higher elastic coefficient than the elastic pavement and having a through-hole penetrating vertically is fixed to the base by a fixing member, the through-hole is filled with the elastic pavement constituting the elastic pavement. The reinforcing material is embedded in an elastic pavement, and the elastic pavement and the reinforcing material are bonded to each other with higher adhesive strength than the elastic pavement and the base. Body construction method. In the construction method of the elastic pavement in which a reinforcing material for preventing warpage is embedded in the end adjacent to the pavement, and the elastic pavement is laid on the base adjacent to the pavement,
After laying an elastic pavement material constituting the elastic pavement on the base with a predetermined thickness, the reinforcing material having a higher elastic coefficient than the elastic pavement and having a through-hole penetrating vertically is laid. The elastic pavement is placed on the elastic pavement having a predetermined thickness and fixed to the base by a fixing member, and then the elastic pavement is laid on the reinforcing material to a predetermined thickness to fill the through hole. An elastic pavement characterized in that the reinforcing material is embedded in an elastic pavement, and the elastic pavement and the reinforcing material are bonded to each other with higher adhesive strength than the elastic pavement and the base. Construction method. In the construction method of the elastic pavement in which a reinforcing material for preventing warpage is embedded in the end adjacent to the pavement, and the elastic pavement is laid on the base adjacent to the pavement,
A concave portion is formed in the base in advance, the elastic coefficient is higher than that of the elastic pavement in the concave portion, the reinforcing material having a through-hole penetrating vertically is installed and fixed to the base by a fixing member, and then The through hole is filled with an elastic pavement material constituting the elastic pavement, the reinforcing material is embedded in the elastic pavement, and the elastic pavement and the reinforcing material are combined with the elastic pavement and the base. A method for constructing an elastic pavement characterized in that the adhesive strength is also increased.

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