JP2004150136A - Protective member for structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective part rich in cushioning properties by securing the adequate thickness of the protective part, and to obtain adequate strength without expending a large number of man-hours and great cost on work for embedding a reinforcing member. <P>SOLUTION: This protective member 1, which is mounted on the surface of the structure, prevents damage to the structure and the abrasion of the structure. The protective member 1 is composed of an elastic protective part 2 and a mounting member 4 for mounting the protective part 2 on the structure. The protective part 2 is molded by adding a binder to a plurality of fragments 2a of vulcanized rubber, and the reinforcing members 3, which are embedded at least in some of the fragments 2a of the vulcanized rubber, are partially protruded at least from some of the reinforcing member-embedded fragments 2a of the vulcanized rubber. Furthermore, the mounting member 4 has a part 4a to be mounted on the structure, which is partially embedded in the protective part 2 and protruded from the protective part 2. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a protection member for a structure. More specifically, the present invention relates to an improvement in the structure of a protection member mounted on a surface of a sabo dam, a pier, a revetment wall, and other various concrete structures to prevent damage and wear of the structures.
[0002]
[Prior art]
Conventionally, in order to prevent concrete structures such as sabo dams and bridge piers from being damaged or worn by collisions with rocks and the like, a plate-like protection member made of an elastic material such as rubber or synthetic resin is provided on the surface thereof. It is attached (for example, see Patent Document 1). This protection member is a plate-shaped elastic member provided with means for attaching to a mating member, and a reinforcing member is embedded in the elastic member as necessary.
[0003]
[Patent Document 1]
JP-A-11-324189
[Problems to be solved by the invention]
However, the conventional protection member has the following problems. That is,
(1) In the case of rubber, it is difficult to vulcanize a thick material evenly, and it takes a long time for vulcanization, so it is difficult to secure a sufficient thickness as a protective member, and a sufficient protective effect is obtained. I can't get it. For this reason, post-processing such as laminating a plurality of molded products is required to increase the wall thickness, which leads to an increase in man-hours and costs.
{Circle around (2)} Since rubber or synthetic resin is densely formed, it has poor cushioning properties against impact and is easily damaged.
{Circle around (3)} When an attempt is made to embed a reinforcing member at the time of molding an elastic member, the mold structure and the like become complicated, and the number of steps and costs increase. In addition, it is difficult to spread the reinforcing member to every corner of the elastic member, and a weakened portion is formed in a part of the protective member, and that part is easily damaged by a collision.
[0005]
Therefore, the present invention provides a protective member for a structure that can secure a sufficient thickness, is rich in cushioning properties, does not require man-hours and costs for embedding a reinforcing member, and can obtain sufficient strength of the protective member. With the goal.
[0006]
[Means for Solving the Problems]
In order to achieve this object, an invention according to claim 1 is a protective member mounted on a surface of a structure to prevent damage or wear of the structure, wherein the protective member includes an elastic protective portion and an elastic protective portion. The protective part is formed by adding a binder to a plurality of pieces of vulcanized rubber, and at least a part of the plurality of pieces of vulcanized rubber. A reinforcing member is embedded, a part of the reinforcing member protrudes from at least a part of the vulcanized rubber fragments in which the reinforcing member is embedded, and a part of the mounting member is protected. It is characterized in that it has a mounting part to a structure buried in the part and protruding from the protection part.
[0007]
The crushed pieces of vulcanized rubber composed of a plurality of small pieces are joined together by a binder to form a protection part of the protection member. In this case, since vulcanized rubber is used, vulcanization is not required. Therefore, the thickness of the protection portion can be arbitrarily set, and a sufficient thickness can be secured.
[0008]
In addition, since a structure in which a plurality of fragments are connected is formed, a minute gap is formed between the fragments after the formation of the protective portion. Thereby, the protection member has a high cushioning property.
[0009]
Further, since the crushed pieces containing the reinforcing member are used in at least a part of the crushed pieces, the reinforcing members are scattered throughout the protection portion after the molding. Therefore, a protective member having high strength can be obtained without requiring any special means for embedding the reinforcing member. In addition, since the mounting member embedded in the protection portion reinforces the strength of the protection member, the durability of the protection member is further improved. Further, the durability of the protection member is further improved by the complicatedly entanglement of the reinforcing member projecting from the crushed piece with another crushed piece, another reinforcing member, a binder, and a mounting member.
[0010]
According to a second aspect of the present invention, in the protective member for a structure according to the first aspect, the porosity of the protective portion is 5% to 30%. If the porosity is higher than 30%, the porosity becomes too large, the hardness decreases, and the durability decreases. On the other hand, if it is less than 5%, voids are eliminated or extremely reduced, so that cushioning properties cannot be obtained, and a strong press pressure must be applied at the time of molding, which increases the cost of equipment and the like. On the other hand, by setting the porosity of the protective portion to 5% to 30%, an appropriate minute void can be easily obtained.
[0011]
According to a third aspect of the present invention, in the structure protection member according to the first or second aspect, the mounting member is bent in the protection portion. In this case, the mounting member and the protection portion are more firmly fixed.
[0012]
Further, in the invention according to claim 4, the crushed pieces are obtained by crushing the tire with the reinforcing member. For example, in a tire for automobiles or the like, a skeleton layer is formed by a circumferential carcass portion, and a vulcanized rubber layer is further formed on an outer peripheral side thereof. The carcass portion is formed by, for example, weaving a yarn such as a steel cord or nylon into a cord, and then covering the yarn with rubber. Therefore, by crushing a tire having such a structure, a crushed piece made of vulcanized rubber containing a carcass portion serving as a reinforcing member at least in part thereof can be obtained.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings.
[0014]
1 to 6 show one embodiment of the present invention. The protection member 1 of the structure 5 of the present invention includes a protection portion 2 having elasticity and a mounting member 4 for mounting the protection portion 2 to the structure 5. The protection part 2 is formed by adding a binder to a plurality of pieces of vulcanized rubber 2a (see FIG. 4), and a reinforcing member 3 is embedded in at least a part of the plurality of pieces of vulcanized rubber. A part of the reinforcing member 3 protrudes from at least a part of the crushed pieces 2a of the vulcanized rubber crushed pieces in which the reinforcing member 3 is embedded. The mounting member 4 is made of, for example, metal, and has a mounting part 4 a partially embedded in the protection part 2 and protruding from the protection part 2.
[0015]
As the vulcanized rubber fragment 2a, a fragment obtained by grinding a waste tire 6 (see FIG. 5) of, for example, an automobile is used. Of course, a newly prepared vulcanized rubber piece can be used as the material of the protective member 1. However, when the waste tire 6 is used, crushed pieces of the material can be obtained by crushing the collected waste tire 6. It is preferable in terms of resource reuse and cost reduction. The rubber material in this case is not particularly limited, and natural rubber, isoprene rubber, styrene butadiene rubber, butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, ethylene propylene rubber, urethane rubber, silicone rubber, fluorine rubber, etc. are used. In addition, a blend of these rubber materials can be used. The size of the crushed pieces 2a is not particularly limited, but as a specific example, it is preferable that the size of the portion excluding the protruding portion of the reinforcing member 3 is mainly 10 mm square or more, and the size of the business card (for example, It is more preferable that the size of the postcard is about 90 mm in length and about 55 mm in width (vertical rectangle) to about the size of a postcard (148 mm in length, 100 mm in width) or slightly larger. If the fragment 2a is too small, the reinforcing effect is small, and if it is too large, a molding problem occurs, which is not preferable. The thickness of the fragment 2a is about 5 to 30 mm.
[0016]
The reinforcing member 3 is a member embedded in the protective member 1 to reinforce the protective member 1. The reinforcing member 3 is preferably a metal wire such as a wire, but may be a base cloth or the like. In the present embodiment utilizing the waste tire 6, the rubber layer 8 including the carcass portion 7 is obtained by crushing the rubber layer 8 together with the carcass portion 7. Generally, since the carcass part 7 is formed by coating a steel cord or a nylon thread with rubber (see FIG. 5), the steel cord or the like in the rubber crushed piece 2a functions as the reinforcing member 3 as it is. Therefore, it is not necessary to add any member for reinforcing the strength of the fragment itself to the fragment 2a obtained by grinding the waste tire 6 as in the present embodiment. In FIG. 4, reference numeral 9 denotes a belt, and reference numeral 10 denotes a rim of a wheel to which the tire 6 is attached.
[0017]
Further, in at least a part of the plurality of crushed pieces 2a, the reinforcing member 3 is provided so as to protrude from the crushed pieces 2a. The reinforcing member 3 protruding in this manner is complicatedly entangled with other debris, another reinforcing member 3, a binder, or the mounting member 4, thereby improving the durability of the protective member 1. In the present embodiment in which the waste tire 6 is pulverized to obtain a plurality of fragments, a fragment 2a in which the reinforcing member 3 protrudes in at least a part of the plurality of fragments can be obtained. It is not necessary that the reinforcing member (that is, the steel cord or the like) 3 is embedded in all the fragments, and it is not necessary that the reinforcing member 3 protrude from all the fragments in which the reinforcing member 3 is embedded. In other words, some debris does not need to contain the reinforcing member 3, and some debris does not have to protrude the reinforcing member 3.
[0018]
The binder is used as an adhesive means for joining the crushed pieces 2a to each other. If the binder can firmly bond the crushed pieces 2a to each other and can release the molded protective member 1 from the mold, the type of the binder is used. Is not particularly limited. For example, a urethane resin or the like can be used as such a binder.
[0019]
The attachment member 4 is a member for attaching the protection member 1 to the structure 5, and is provided on the protection member 1 so that a part of the attachment member 4 projects from the protection part 2. The protruding portion serves as an attachment portion 4a that is fixed to the structure 5 (see FIGS. 1 to 3). For example, in the present embodiment, the mounting member 4 is configured by mounting the reinforcing bar, which is bent at two locations so as to have a U-shape, to the protection unit 2 with both ends protruding. In this case, the two attachment portions 4a are connected by one reinforcing bar, and the connection portion is embedded in the protection portion 2, so that a high reinforcing effect on the protection member 1 is obtained. In addition, since the connecting portion of the reinforcing member 3 or the other mounting member 4 is entangled with this connecting portion, the impact resistance of the protective member 1 is further enhanced. Here, a reinforcing bar is used as the mounting member 4, but the present invention is not particularly limited to this, and for example, a pipe or the like can be used. As a material of the mounting member 4, a metal such as iron, a resin such as FRP, wood, or the like can be used.
[0020]
Here, the porosity of the protection part 2 in the protection member 1, that is, the ratio of the gap occupying the protection part 2 is preferably 5% to 30%. If the porosity is higher than 30%, the porosity becomes too large to lower the hardness and durability, while if it is less than 5%, the porosity disappears or becomes extremely small, so that the cushioning property cannot be obtained and the molding is also performed. Although it is necessary to apply a strong press pressure, in the present embodiment, the porosity of the protective portion 2 is set to 5% to 30% to obtain an appropriate cushioning property and prevent molding from becoming difficult.
[0021]
As a specific example of the production method, first, 100 parts by weight of a crushed piece 2a of a tire 6 containing a steel cord (carcass portion 7) is prepared as a crushed rubber piece, and a urethane resin (for example, Mitsui Takeda Chemical Co., Ltd.) is used as a binder. 5 parts by weight of a product name “Takenate F-187” manufactured by the company) are prepared, and both are mixed. Subsequently, after the reinforcing bar serving as the mounting member 4 is placed on the lower mold of the press molding die, the mixture is filled in the lower mold. At this time, the filling rate of the mixture is, for example, 90%. Thereafter, the upper mold is placed on the lower mold and press-molded. After molding, the binder is cured by heating with the mold closed. Then, after heating, the mold is removed to obtain the protective member 1. The size of the protective member 1 after molding is set to an appropriate size (for example, about 600 mm × 1200 mm) as a member to be mounted on the surface of the structure 5 (see FIG. 3).
[0022]
The protection member 1 of the present embodiment is used, for example, as a frame material of the structure 5. That is, for example, when a sabo dam as shown in FIG. 6 is constructed, first, the protective member 1 is framed so as to form an outer wall of the dam, and then concrete is poured into the frame. When the concrete is solidified, the protection member 1 that makes the mounting portion 4a protrude into the concrete is fixed to the surface of the concrete. As a result, the protection member 1 is mounted on the surface of the structure (the sabo dam in this example) 5, and a protection film or a protection film for preventing the structure 5 from being damaged or worn by the impact of rocks or the like. Functions as a protective wall.
[0023]
The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, a substantially rectangular parallelepiped is exemplified as the protection member 1 (see FIG. 3), but this is merely an example of the shape, and is appropriately formed according to the type, size, shape, and the like of the structure 5. Can be changed. Further, the size (about 600 mm × 1200 mm) of the protection member 1 shown in the above-described embodiment is merely an example, and can be appropriately changed according to the size of the structure 5 and the like.
[0024]
【The invention's effect】
As is apparent from the above description, according to the structure protection member of the first aspect, since the protection member is formed by connecting the crushed pieces of the vulcanized rubber, the vulcanizing operation for the protection member is unnecessary. Therefore, the protection portion can be formed to have an arbitrary thickness, and a sufficient thickness can be secured. Further, since a sufficient thickness can be secured without performing processing such as bonding a plurality of molded products, man-hours and costs can be reduced.
[0025]
In addition, the protective member according to the present invention has high cushioning properties because a minute gap is formed between the pieces by connecting the plurality of pieces. Therefore, the protective member itself is not easily damaged, and is suitable as a protective wall or a protective film for preventing various concrete structures such as a sabo dam, a pier, and a seawall from being damaged or worn.
[0026]
Furthermore, since the reinforcing member is scattered throughout the protection portion by using a reinforcing member containing at least a portion of the crushed pieces, a high-strength protective member can be provided without requiring any special means for embedding the reinforcing member. Can be obtained. Therefore, the cost can be reduced accordingly. Moreover, the mounting member embedded in the protection portion reinforces the strength of the protection member, so that the durability is further improved. In addition, the durability of the protection member is further improved because the reinforcing member protruding from the crushed piece is complicatedly entangled with another crushed piece, another reinforcing member, a binder, and a mounting member.
[0027]
According to the protective member for a structure according to the second aspect, by setting the porosity of the protective portion to 5% to 30%, an appropriate minute void can be realized, and a protective member having excellent cushioning properties can be formed. In this case, it is possible to solve the problem that the hardness and durability of the protective member are reduced, or the problem that the cushioning property cannot be obtained and a strong press pressure must be applied even during molding, resulting in an increase in cost.
[0028]
According to the structure protecting member of the third aspect, the mounting member is bent in the protection portion, so that the mounting member and the protection portion can be more firmly fixed.
[0029]
Further, according to the structure protecting member of the fourth aspect, it is possible to obtain a rubber crushed piece by crushing a tire containing a reinforcing member without newly manufacturing the tire. In addition, since the carcass part contained in the tire in advance can be used as it is as a reinforcing member, the strength of the protective member can be ensured. Further, it is preferable to use a waste tire as the tire with a reinforcing member in terms of resource reuse and cost reduction.
[Brief description of the drawings]
FIG. 1 is a side view showing an example of a protective member of a structure according to the present invention.
FIG. 2 is a front view of a protection member.
FIG. 3 is a perspective view of a protection member.
FIG. 4 is a diagram showing an example of a fragment.
FIG. 5 is a diagram showing a structural example of an automobile tire.
FIG. 6 is a view showing an example of a sabo dam having a protective member according to the present invention mounted on a surface thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Protective member (of structure) 2 Protective part 2a Debris 3 Reinforcement member 4 Mounting member 4a Mounting part 5 Sabo dam (structure)
6 tires

Claims (4)

In a protection member mounted on the surface of a structure to prevent damage or wear of the structure, the protection member includes an elastic protection portion and a mounting member for mounting the protection portion to the structure. The protective portion is formed by adding a binder to a plurality of pieces of vulcanized rubber, and a reinforcing member is embedded in at least a part of the plurality of pieces of the vulcanized rubber. A part of the reinforcing member protrudes from at least a part of the embedded vulcanized rubber fragments, and the mounting member has a part embedded in the protective part and a part from the protective part. A structure protection member having a projecting attachment portion to the structure. The structural member according to claim 1, wherein the porosity of the protective portion is 5% to 30%. The structure according to claim 1, wherein the attachment member is bent in the protection portion. The structural member according to any one of claims 1 to 3, wherein the crushed pieces are obtained by crushing a tire containing a reinforcing member.

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