JP2004116183A - Connecting tool for lamination of foamed resin blocks, and connection and lamination method for foamed resin blocks using the connecting tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting tool capable of efficiently integrally connecting laminated foamed blocks, in a civil engineering construction method using a laminated product of foamed resin block as civil engineering material, and being prevented from loosening or dropping out from the foamed resin blocks after the connecting integration. <P>SOLUTION: This connecting tool for lamination of foamed resin blocks comprises a horizontal head part 12 and insert parts 13a and 13b extended vertically from both ends of the head part 12. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a civil engineering method (hereinafter, referred to as an embankment method) in which foamed resin blocks (hereinafter, referred to as foamed blocks) are juxtaposed and laminated as civil engineering materials. The present invention relates to a connecting tool used and a method for connecting and laminating foam blocks using the connecting tool.
[0002]
[Prior art]
In recent years, the above embankment method has been used for civil engineering works such as road and land development, and a laminate of large foam blocks is used as an embankment material or backfill material.
The foam block is made of expanded polystyrene, polyurethane, or the like, and as a standard block, a square block having a length of 2 m, a width of 1 m, and a thickness of 10 to 50 cm, for example, is frequently used.
[0003]
For example, in a road embankment as shown in FIG. 8, a leveling layer 3 is formed of sand or the like on an excavation surface 2 of a foundation ground 1, and a plurality of foam blocks 4 are juxtaposed in a staggered manner on the upper surface of the leveling layer 3. While stacking, the foam blocks 4 are connected by the connecting plates 5 and 6.
[0004]
The connecting plates 5 and 6 are made of galvanized iron plates. The connecting plate 5 has a plurality of claws 7 protruding on both peripheral edges as shown in FIG. 9 and is applied between the layers of the foam block 4 as shown in FIG. The connecting plate 6 has a plurality of claws 7 protruding from one peripheral surface as shown in FIG. 11, and is applied to the uppermost surface or side surface of the foam block 4 as shown in FIG.
[0005]
When the installation of the foam block 4 is completed, the control floor slab 8 is cast on the top end, and then the earth covering 9 is applied to the slope of the foam embankment to complete the road embankment.
[0006]
On the other hand, there has been proposed a method of connecting and integrating a foam block in which a rod-shaped connecting tool is pierced into a lower layer from above the stacked foam blocks to connect the upper and lower foam blocks to each other (for example, Patent Document 1, 2).
[0007]
[Patent Document 1]
Japanese Patent Publication No. 7-56141 (FIGS. 1 to 7)
[Patent Document 2]
JP-A-2000-220145 (FIGS. 1 to 16)
[0008]
[Problems to be solved by the invention]
However, in the conventional method of connecting the foam blocks 4 by the connecting plates 5 and 6, (1) the opposite foam blocks 4 must be connected every two layers, and three or more layers cannot be connected at once. (2) The angle of the nail is likely to change when an object hits the nail 7, so it is often necessary to correct it before use, and it is inevitable that vigorous workability will decrease. 7 has a height of about 25 mm, so that it easily escapes during work, for example, due to vibration or the like, and easily escapes when vibration is applied vertically or horizontally due to an earthquake or the like even after connection, and the connection force is weak. (4) There is a problem that the nail 7 is stuck to the worker's foot during the work, and (5) the life of the connecting plates 5 and 6 is short due to rust or the like.
[0009]
On the other hand, the method of connecting the foam blocks of the upper and lower layers by piercing the rod-shaped connecting tool generally solves the problem of the connecting plate, but (1) the workability is poor because one by one is inserted. (2) There is a risk of loosening or falling off when vibrations are applied vertically or horizontally after connection. (3) The above problem is solved when a retaining projection is provided on the shaft ( (See FIGS. 10 and 11 of Patent Document 2) Even if it is necessary to pull out for some reason after piercing one end, it is extremely difficult to pull out. (4) Since one shaft portion is formed, the adjacent foam block is used. Cannot be integrated in the lateral direction, and even if a connecting tool having both ends formed in a hook shape on the head (see FIGS. 6, 8, and 11 of Patent Document 2), a short hook shape is used. Only the surface layer of the foam block is connected and integrated by the part Because it is not only, the integrally connected force is very weak and insufficient.
[0010]
An object of the present invention is to improve the conventional connecting plates 5 and 6 and the bar-shaped connecting tool to eliminate the above-mentioned problems.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the present invention is a connection for laminating a foamed resin block, comprising: a horizontal head portion; and insertion portions extending vertically from both ends of the head portion. The contents are included.
[0012]
A second aspect of the present invention is the foamed resin block according to the first aspect, wherein the insertion portion is bent inward within a range of 5 to 25 degrees from a line vertically lowered from both ends of the horizontal head. Includes a connector for lamination.
[0013]
According to a third aspect of the present invention, there is provided the connector for laminating a foamed resin block according to the first or second aspect, wherein the vicinity of the tip of the insertion portion is bent rightward or leftward in a range of 5 to 25 degrees in side view. Content.
[0014]
According to a fourth aspect of the present invention, there is provided the connecting member for laminating a foamed resin block according to any one of the first to third aspects, wherein a recess is provided near the center of the head.
[0015]
According to a fifth aspect of the present invention, the two insertion portions of the connecting tool according to any one of the first to fourth aspects are connected to a plurality of foamed resin blocks that are juxtaposed and stacked in parallel. A method for connecting and laminating a foamed resin block is characterized in that it is connected and integrated vertically and horizontally while being inserted into a bridge via a head.
[0016]
[Action]
Since the connecting tool according to claim 1 of the present invention includes a head and an insertion portion extending vertically from both ends thereof, the connecting tool is formed into a multi-layer foam block in which one connecting tool is juxtaposed and stacked in a staggered manner. When inserted, it is equivalent to inserting two conventional rod-shaped connecting tools, so that the connecting and integrating can be performed twice as efficiently. Further, since the two insertion portions are connected by the head, even if a force that causes the two insertion portions to escape due to vibration or the like is applied, the two connection portions are absorbed and alleviated by the head that connects the two, and the connection tool is connected. Sag and escape are suppressed. In addition, since adjacent foam blocks can be connected and integrated in a bridge structure, they are extremely strongly connected and integrated.
[0017]
In the connecting tool according to the second aspect of the present invention, since the insertion portion is bent inward by 5 to 25 degrees, when inserting this into the foam block, it is inserted into the foam block while being slightly bent outward or inward. It is. Therefore, in the foam block, since the insertion portion tries to contract or expand in order to return to the original state, a force acts to pinch the foam block inside or press the outside at both insertion portions, so that vibration etc. Even if it is added, loosening and escape are less likely to occur.
[0018]
According to the third aspect of the present invention, since the distal end portion of the insertion portion is bent rightward or leftward by 5 to 25 degrees in a side view, it acts so as to resist the upward pulling force, Even if vibration or the like is applied, loosening or escape hardly occurs.
[0019]
In the connecting tool according to the fourth aspect of the present invention, since the recess is provided near the center of the horizontal head, the recess bites into the foam block, and loosening and escape are further unlikely to occur.
[0020]
According to a fifth aspect of the present invention, there is provided a method for stacking and connecting, wherein both insertion portions of the connecting tool are inserted into an adjacent foamed resin block and connected and integrated via a head of the connecting tool in a bridging manner. Even if it is not likely to be loosened or deformed, a laminated structure of a foamed block that is stable over a long period of time can be obtained.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
The connecting tool of the present invention is characterized by comprising a horizontal head and insertion parts vertically extending from both ends of the head. The size of the connector is not particularly limited, and may be appropriately determined in consideration of the size of the foam block, workability, etc., but preferably the head is about 50 to 150 mm, more preferably about 80 to 120 mm, and the insertion part is It is preferably about 600 to 2500 mm, more preferably about 650 to 1200 mm. The material is preferably a hard steel wire (JIS G 3506 SWRH 72A), and a wire having a wire diameter of about 3 to 7 mm is preferable.
[0022]
The angle at which the insertion portion is bent inward is preferably in the range of 5 to 25 degrees. If it is less than 5 degrees, the effect of bending inward, that is, the effect of preventing loosening and escape, is not sufficient. On the other hand, if it is more than 25 degrees, it is difficult to insert the connector into the foam block, which is not preferable.
[0023]
Further, the angle at which the vicinity of the tip of the insertion portion is bent rightward or leftward in a side view is preferably in the range of 5 to 25 degrees. If the angle is less than 5 degrees, the effect of bending to the right or left, that is, the effect of preventing loosening and escape, is not sufficient. On the other hand, if the angle is greater than 25 degrees, it becomes difficult to insert the connector into the foam block, which is not preferable. The vicinity of the tip to be bent may be appropriately determined according to the length of the insertion portion, but is preferably about 30 to 80 mm, more preferably about 40 to 70 mm from the tip.
[0024]
At least one depression near the center of the horizontal head is provided, and a plurality of depressions may be provided as necessary. The dents cut into the surface of the foam block, and have the effect of preventing loosening and lifting of the coupling tool.
It is desirable that the tip of the insertion portion be sharpened in order to facilitate insertion of the foam block.
[0025]
The foam block in the present invention is made of a polystyrene resin, a polyurethane resin, or the like, and may be a recycled product thereof. The size is not particularly limited, and may be appropriately determined in consideration of the construction site, workability, and the like. As described above, for example, the standard size is typically 2 m long × 1 m wide × 1 to 50 cm wide, A through hole may be provided to reduce the weight or accommodate the remaining soil.
[0026]
In order to connect and laminate the foam blocks using the connecting tool of the present invention, both the insertion portions of the connecting tool of the present invention are connected to the foam block of a plurality of layers juxtaposed and stacked in a staggered manner. Vertically and horizontally connected and integrated while inserting the head to bridge. Of course, if necessary, even if it is used in a part that is not adjacent to the foam block, not only a laminated body that is difficult to escape for the above-described reason can be obtained, but also one insertion corresponds to two insertions of the conventional rod-shaped connecting tool. And is extremely efficient. Further, needless to say, it may be used in combination with a conventional rod-shaped connecting tool if necessary. The connector of the present invention can be efficiently inserted into the foam block by abutting an iron plate or the like to the upper part of the head so as not to bend, and hitting the iron plate with a hammer.
[0027]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, it goes without saying that the present invention is not limited to these embodiments.
[0028]
Example 1
As shown in FIG. 1, the connecting tool 11 of the present embodiment is made of a hard steel wire having a wire diameter of 4 mmφ (JISG 3506 SWRH 72A), and has a horizontal head 12 (length 100 mm) and a vertical direction from both ends. And insertion portions 13a and 13b (length: 650 mm) extending from the bottom. The tips of the insertion portions 13a and 13b are pointed.
[0029]
Example 2
As shown in FIG. 2, the connecting device 11 of the present embodiment is different from the connecting device of the first embodiment in that the insertion portions 13 a and 13 b are 15 degrees lower than the lines vertically lowered from both ends of the head (in the figure, α) It is the same as Example 1 except that it is bent inward.
[0030]
Examples 3 and 4
As shown in FIG. 3, the connector 11 of the present embodiment is different from the connector shown in the first or second embodiment in the vicinity of the distal end (100 mm from the distal end) of the insertion portion 13 a (13 b is not shown). (Not shown) is the same as Example 1 or 2 except that it is bent to the left by 15 degrees (β in the figure) in side view.
[0031]
Example 5
As shown in FIG. 4, the coupler 11 of the present embodiment is the same as the coupler of the first embodiment except that a recess 12a is provided near the center of the horizontal head 12 in the coupler of the first embodiment. It is.
[0032]
Example 6
As shown in FIG. 5, the coupler 11 of the present embodiment is the same as the coupler of the second embodiment except that a recess 12a is provided near the center of the horizontal head 12 in the coupler of the second embodiment. It is.
[0033]
Examples 7 and 8
As shown in FIG. 6, the coupler 11 of the present embodiment is the same as the coupler of the fifth or sixth embodiment except that a recess 12a is provided near the center of the horizontal head 12. Or the same as 6.
[0034]
Example 9
In order to construct a road embankment as shown in FIG. 7, for example, using the connecting tool 11 of the second embodiment (FIG. 2), first, a leveling layer 17 is formed on the excavated surface 16 of the foundation ground 15 with sand or the like. Then, foam blocks 18a, 18b, and 18c are juxtaposed and stacked on the upper surface of the leveling layer 17, and a plurality of layers are juxtaposed and stacked in a staggered manner while inserting the connector 11 into the adjacent foam blocks 18a, 18b, and 18c, respectively.
[0035]
In this case, the insertion portions 13a, 13b of the connecting tool 11 are inserted into the adjacent foam blocks 18a, 18b, 18c, respectively, and are connected vertically and horizontally while being integrated via the head 12 of the connecting tool 11 so as to bridge. . In the present embodiment, the lowermost foam block 18a is fixed by the insertion portion of the connector 11 penetrating through the leveling layer 17 and the excavation surface 16 and being inserted into the ground.
[0036]
When the connection and integration of the foam blocks 18a, 18b, and 18c are completed, the control floor panel 19 is cast on the top end of the foam block 18c, and then the earth covering 20 is constructed on the slope of the foam embankment to complete the road embankment. .
[0037]
【The invention's effect】
As described above, the foam block connecting device according to the present invention has a high work efficiency, and is not easily loosened or escaped even when vibration is applied or in the case of an earthquake or the like. A connected laminate is obtained. Thus, the connecting tool of the present invention and the embankment method using the same are extremely useful for various civil works such as road and land development, park and garden embankment, and landslide embankment.
[Brief description of the drawings]
FIG. 1 is a front view showing a connector according to a first embodiment of the present invention.
FIG. 2 is a front view showing a connector according to a second embodiment of the present invention.
FIG. 3 is a side view showing a connector according to Embodiments 3 and 4 of the present invention.
FIG. 4 is a front view showing a connector according to a fifth embodiment of the present invention.
FIG. 5 is a front view showing a connector according to a sixth embodiment of the present invention.
FIG. 6 is a cross-sectional view taken along the center of a depression showing a coupling tool according to Examples 5 and 6 of the present invention.
FIG. 7 is a schematic view showing a method of connecting and laminating a foam block using the connecting tool of the present invention and an embankment method.
FIG. 8 is a schematic view showing a conventional method of connecting and laminating a foam block using a connecting plate and an embankment method.
FIG. 9 is a perspective view showing an example of a conventional connecting plate.
FIG. 10 is an explanatory view showing a use state of the connecting plate of FIG. 9;
FIG. 11 is a perspective view showing another example of a conventional connecting plate.
FIG. 12 is an explanatory view showing a use state of the connecting plate of FIG. 11;
[Explanation of symbols]
1, 15 Foundation ground 2, 16 Excavation surface 3, 17 Leveling layer 4, 18a, 18b, 18c Foam synthetic resin block (foam block)
5, 6 Connecting plate 7 Claw 8, 19 Control floor plate 9, 20 Covering earth 11 Connecting tool 12 Head 12a Depression 13a, 13b Inserting portions 14a, 14b Near the tip of the inserting portion

Claims (5)

A connector for laminating a foamed resin block, comprising: a horizontal head portion; and an insertion portion extending vertically from both ends of the head portion. 2. The connector for laminating a foamed resin block according to claim 1, wherein the insertion portion is bent inward within a range of 5 to 25 degrees from a line vertically lowered from both ends of the horizontal head. The connecting part for laminating a foamed resin block according to claim 1 or 2, wherein the vicinity of the tip of the insertion portion is bent in the right or left direction within a range of 5 to 25 degrees in a side view. The connector for laminating a foamed resin block according to any one of claims 1 to 3, wherein a recess is provided near the center of the head. The two insertion portions of the connecting tool according to any one of claims 1 to 4 are bridged through a head portion to a plurality of foamed resin blocks that are juxtaposed and laminated in a staggered manner. A method of connecting and laminating a foamed resin block, wherein the foamed resin block is vertically integrated and horizontally integrated while being inserted.

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