JP2000038766A - Concrete product and jointing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the damages to jointed part of concrete products. SOLUTION: The joint surface of joint hardware 10 for both or one of concrete products 1 jointed to each other is kept projected over the joint edges of the concrete products 1 and the joint edges of the concrete products 1 are thereby kept free from close contact with each other in a jointed state. As a result, the joint edges are almost free from contact with each other even when more or less irregularities exist on the joint edges, and excessive stress concentration does not take place, thereby preventing the damages to a jointed part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a gutter block,
The present invention relates to a concrete product to be constructed by jointing a plurality of things such as culvert blocks and manhole blocks, and a joint method therefor.

[0002]

2. Description of the Related Art Concrete products such as gutter blocks are blocks having a length of several tens of centimeters to several meters, and a large number of such blocks are joined to form long gutters. For example, a joint fitting 10 shown in FIG. 4 is implanted in a joint end face of this type of concrete product, and a bolt hole formed in a joint surface of both joint fittings arranged in opposing contact at the time of joint. And a nut is screwed into the bolt to be joined and integrated. At this time, the joint end surface of the concrete product and the joint surface of the joint fitting are flush with each other, and therefore, in the joined state, the joint end surfaces of both concrete products are completely adhered.

[0003]

As described above, in the conventional joint of concrete products, the joint end faces of both concrete products are completely adhered. By the way, the surface of a concrete product is not a completely smooth flat surface, but some irregularities always exist. In addition, irregularities may be caused by adhesion of dust such as sand particles. If the joint end surface has such irregularities, if it is brought into close contact with joining means such as bolts, the compressive stress will concentrate on the convex part, causing the problem that concrete will be chipped or cracked and the joint end surface of the concrete product will be damaged. . In addition, there is a problem that the joint part of the concrete product is bent or displaced due to an earthquake or uneven settlement, which also damages the joint part. The present invention has been made to prevent such joint parts of concrete products from being damaged.

According to the present invention, in a concrete product to be constructed by jointing a plurality of pieces, a joint surface of a joint fitting planted on a joint end surface of the concrete product is made to protrude beyond a joint end surface of the concrete product. Product.

[0005] In addition, the present invention provides a plurality of joints that are planted at the joint end surfaces of concrete products, the joint end surfaces of the concrete products to be jointed are opposed to each other, and the joints are joined and integrated by joining means such as bolts. In the method of joining concrete products, the joint surface of the joint fitting of one or both of the concrete products is made to protrude beyond the joint end surface of the concrete product. A joint method for a concrete product, characterized in that the end faces are not brought into close contact with each other.

[0006] Since the joint surface of the joint fitting protrudes from the joint end face of the concrete product, when the concrete products are joined, the joint end surfaces of both concrete products do not adhere to each other, and a gap corresponding to the projecting joint surface of the joint fitting is formed. Is generated. Therefore, even if there are some irregularities on the joint end surfaces, the joint end surfaces hardly come into contact with each other, so that excessive concentrated stress does not occur and the joint portion is not damaged. Also,
Even if the joint part of the concrete product is bent or displaced due to an earthquake or uneven settlement, the joint part is made of metal and the joint part can be slightly deformed by its elasticity. Less likely to receive.

In the present invention, since a gap is formed between the concrete products to be joined, a horizontal joint filled with an elastic body is provided above the joint end face of the concrete product so that the joint portion of the concrete product after the construction is formed. It is possible to prevent dust and the like from entering the gap.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments. FIG. 1 is a front view of the gutter block 1 of the embodiment, FIG. 2 is a side view of the gutter block 1,
3 is a side view of a joint portion of the side groove block 1, FIG. 4 is a perspective view of the joint fitting 10, FIG. 5 is a front view of the retaining wall block 20 of the embodiment, and FIG. 6 is a joint portion of the retaining wall block 20. FIG.

As shown in FIGS. 1 and 2, the gutter block 1 has a substantially cylindrical shape and has a water flow hole 4 formed therein. Both ends are joint end faces 2, and a long side groove is formed by joining and constructing a large number of blocks. Two joint fittings 10 are planted on the joint end faces 2 at both ends, respectively. The joint fitting 10 (the right side in FIG. 2) on one end face has a joint face 11
Project from the joint end face 2 by t, and the joint face 11 of the joint fitting 10 (the left side in FIG. 2) on the other end face is flush with the joint end face 2. Further, a joint 3 is formed at an upper portion of one end face of the joint (the right side in FIG. 2), and a joint material 7 (FIG. 3) made of butyl rubber having high elasticity is attached to the joint. An annular joint 5 is formed around the flowing water hole 4, and a joint material (not shown) rich in elasticity is also attached to the annular joint 5. The material of the joint material is not limited to butyl rubber, and any material having a high elasticity may be used. In addition, it may be attached not only to the joint with an adhesive but also to the joint by fitting or the like, or may be attached by so-called driving.

As shown in FIG. 4, the joint fitting 10 implanted in the side groove block 1 is a U-shaped joint in which a horizontal plate member is integrally connected rearward above and below a vertical plate member. The surface of the plate member is a joining surface 11, and a bolt hole 12 is provided near the center thereof. An anchor portion 13 is provided behind the horizontal plate member, and this portion is completely embedded in the concrete so that the joint fitting 10 does not come out of the block 1. As shown in FIG. 3, the inside of the U-shaped portion of the implanted joint fitting 10 is a notch 6 in which concrete is cut out, and can be joined by bolts and nuts.

The gutter block 1 is jointed as shown in FIG. That is, the joint end faces 2 of the two blocks 1 to be jointed are arranged to face each other, the two joint fittings 10 are brought into facing contact with each other, and the bolt 14 serving as the connecting means is connected to the bolt hole 12 of the both joint fittings 10.
And tighten it with the nut 15. Since the joint surface 11 of the joint fitting 10 on the one joint end surface 2 protrudes by t from the joint end surface 2 and the joint surface 11 of the joint fitting 10 on the other joint end surface 2 is the same as the joint end surface 2, the joint A gap of t occurs in the portion. The joint material 7 attached to the joint 3 is deformed by being pressed by the joint end face of the joint block 1 and closes the upper gap, so that dust and the like do not enter this gap.

In the above embodiment, only one of the joint fittings implanted on the joint end face is projected from the joint end face by t, but the joint fittings on both end faces can be projected by t. . In this case, the gap at the joint of the concrete product is 2t.

The joint fitting 10 shown in the above embodiment is
Although it is the most common, it is of course possible to use other joint fittings, and the joining means is not limited to bolts and nuts.

The appropriate width of the gap in the concrete product joint formed by projecting the joint fitting from the joint end surface varies depending on the size of the concrete product, the construction place, etc., but is 1 to 10 m.
The m position is appropriate.

[0015]

According to the present invention, even if there are some irregularities in the joint end faces of the concrete product, the joint end faces hardly come into contact with each other, so that excessive concentrated stress does not occur and the joint portion is damaged. There is no. Even if the joint of a concrete product bends due to an earthquake or uneven settlement, the joint can be slightly deformed due to its elasticity because the metal fittings are made of metal. Less likely to receive. When a horizontal joint filled with an elastic body is provided above the joint end surface of the concrete product,
After the construction, dust and the like do not enter the gap of the joint part of the concrete product.

[Brief description of the drawings]

FIG. 1 is a front view of a gutter block 1 according to an embodiment.

FIG. 2 is a side view of the side groove block 1. FIG.

FIG. 3 is a side view of a joint portion of the side groove block 1. FIG.

4 is a perspective view of the joint fitting 10. FIG.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 gutter block 2 joint end face 3 joint 4 running water hole 5 annular joint 6 notch 7 joint material 10 joint fitting 11 joint surface 12 bolt hole 13 anchor portion 14 bolt 15 nut

Claims (3)

[Claims] 1. A concrete product to be constructed by joining a plurality of joints, wherein a joint surface of a joint fitting planted on a joint end surface of the concrete product is made to protrude beyond a joint end surface of the concrete product. 2. The concrete product of claim 1, wherein
A concrete product having a horizontal joint filled with an elastic joint material at an upper part of a joint end face of the concrete product. 3. A plurality of concrete products are formed by implanting joint fittings on the joint end surfaces of the concrete product, making the joint end surfaces of the concrete products to be joined face each other, and joining and integrating the joint fittings with joining means such as bolts. In the method of joining concrete products, the joint surface of the joint fitting of one or both concrete products is made to protrude beyond the joint end surface of the concrete product, and the joint end surfaces of both concrete products are in close contact with each other in the jointed state Method for joining concrete products characterized by not being done