JP2000290955A - Caisson mat and method for attaching anchor member thereto - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the man-hour and period of construction work by allowing even one worker to easily attach anchor members from one side while caisson mats are positioned or piled up. SOLUTION: This caisson mat 1 in the form of a rubber plate connected to the bottom face of a concrete caisson has through holes bored in a plurality of appropriate portions of the rubber-plate-shaped caisson mat 1. Cell flocking pins comprising a hollow guide 2 and at least one pair of opposite pins 3 penetrating the wall thickness of the hollow guide 2 are installed in the through holes. Holes 4 or grooves provided near the end of an anchor member 7 inserted in the hollow guide 2 can fit over the pins 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caisson mat connected to the bottom of a concrete caisson and a method of attaching an anchor member to the caisson mat.
The caisson constructed for gravity type revetment is a rectangular body made of concrete, and a caisson mat, mainly a rubber plate, is attached to the bottom surface.

[0002]

2. Description of the Related Art Conventionally, a caisson mat has been attached to the bottom of a caisson constructed for gravity type revetment in order to stabilize a harbor structure and prevent disasters such as wave force and earthquake. Such a caisson mat is a mat-like rubber plate that increases the sliding resistance between the stone mound and a disaster such as a wave force or an earthquake and stabilizes the structure. The concrete caisson 5 to which the rubber plate-shaped caisson mat 1 is attached is installed on a waste stone mound 6 as shown in FIG. When constructing the quay, concrete caisson 5 is installed in a row in a row as shown in FIG.

[0003] In recent years, since the caisson mat is a rubber plate having elasticity and toughness, it has become possible to set the friction coefficient between the caisson and the waste stone mound to 0.75 or more, and the structure becomes stable and safe. The sex has been enhanced. In addition, the size of the caisson can be reduced, leading to cost savings.

FIG. 7 shows such a rubber plate caisson mat.
As shown in the figure, a number of anchor members 7 are mounted, and the anchor members 7 fix the caisson mat 1 to the concrete caisson poured thereon. Various methods of attaching the anchor member 7 to the caisson mat 1 have been proposed so far, and all of them have been provided with through holes in the caisson mat as shown in FIG. 8 and attached using bolts and nuts.

For example, in a caisson rubber disclosed in Japanese Utility Model Laid-Open Publication No. 3-2044, as shown in FIG. 8, a flat and large-diameter bolt head 10 and a head cover 11 enclosing the same have a rubber plate-like mat 12. In this method, the anchor member is screwed into the threaded portion 15 of the bolt, which is fixed through the nut 14 in close contact with the counterbore 13 and protrudes from the surface of the caisson mat. Similarly, as a method in which a through hole is formed in a caisson mat and an anchor member is attached using bolts and nuts, for example, Japanese Utility Model Application Laid-Open No.
No. 741, Japanese Utility Model Application Laid-Open No. 5-22635, Japanese Patent Laid-Open No. 7-710.
No. 41 is known.

[0006]

The method of attaching an anchor member to a rubber plate-like caisson mat, which has been conventionally proposed and employed, has been described above. And a method of attaching an anchor member using bolts and nuts or the like. In many cases, such an operation is performed on site, and in this case, it is not easy to perform the operation alone. Therefore, the workability of caisson installation has been reduced. Further, in the method of attaching the anchor member using the bolt and the nut, there is a case where the nut is loosened after the attachment.

Accordingly, an object of the present invention is to make it possible for one person to easily attach an anchor member from one side while a caisson mat is arranged or stacked, thereby achieving a reduction in the number of construction steps and a reduction in the construction period. It is an object of the present invention to provide a caisson mat and a method of attaching an anchor member to the caisson mat.

[0008]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have made intensive studies with particular emphasis on making it possible for one person to easily attach an anchor member to a caisson mat. The inventors have found that the above objects can be achieved by the following, and have completed the present invention.

That is, the caisson mat of the present invention is a rubber plate-shaped caisson mat connected to the bottom surface of a concrete caisson, and through holes are formed at a plurality of appropriate places on the rubber plate-shaped caisson mat. In the caisson mat, a self-locking pin including a hollow guide and at least one set of pins facing through the thickness of the hollow guide is installed in the through hole, and near a tip of an anchor member inserted into the hollow guide. And the pin can be fitted with the hole provided in the hole.

Another caisson mat of the present invention is a rubber caisson mat connected to the bottom surface of a concrete caisson, and through holes are formed at a plurality of appropriate positions on the rubber caisson mat. In the caisson mat, a self-locking pin composed of a hollow guide and at least one set of pins that face each other through the thickness of the hollow guide is installed in the through hole, and the anchor member inserted into the hollow guide is The pin may be fitted with the groove provided near the distal end.

[0011] The present invention also relates to a method for attaching an anchor member to the caisson mat. In the method for attaching an anchor member to the caisson mat, the anchor member having a hole or a groove near a tip is inserted into a hollow guide. The pin is fitted with the hole or groove.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. A caisson mat according to a preferred embodiment of the present invention will be described with reference to the drawings.

First, a self-locking pin that can be suitably used in the present invention will be described. As shown in FIG. 1, the self-locking pin includes a hollow guide 2 and at least one set of pins 3 (one set in the illustrated example) facing through the thickness of the hollow guide. The set of pins 3 is in contact with each other in the hollow guide 2, and is configured to be expanded by inserting the anchor member 7. In the present invention, such a self-locking pin is applied to a through hole formed in a caisson mat, and a part to be locked is an embedded anchor member. Although the conventional anchor member has a thread groove as described above, in the present invention, since the self-locking pin is provided in the through hole of the caisson mat, it is not necessary to cut the thread groove in the anchor member.

In the present invention, if the self-locking pin is provided with at least one set of pins, a stable attachment state of the anchor member can be obtained. in this case,
Preferably, two sets of pins are provided, one set each in two directions orthogonal to each other (not shown).

A method of attaching the embedded anchor member 7 to the caisson mat 1 provided with the self-locking pin shown in FIG. 1 will be described with reference to FIGS. As shown in FIGS. 2A and 2B, the anchor member 7 is inserted into the hollow guide 2, but the set of pins 3 is in contact with each other until the pin 3 contacts the anchor member 7.

When the anchor member 7 is further depressed, the pin 3 is pushed right and left against the rubber of the caisson mat 1 as shown in FIG. When the hole 4 provided near the distal end of the anchor member 7 reaches the position of the pin 3, the pins 3 spread to the left and right face the inside of the hollow guide 2 by the elastic force of the caisson mat rubber and come into contact with each other again. (D in FIG. 2). When the hole 4 of the anchor member 7 and the pin 3 are fitted in this way, it is difficult to pull out the anchor member 7 upward, and it is possible to maintain good connection between the caisson mat and the concrete caisson.

The anchor member 7 embedded in the caisson mat 1 has an L-shaped portion embedded in concrete,
It is preferable that the tip of the portion to be driven into the self-locking pin has a tapered tip in order to facilitate insertion. The material is not particularly limited, such as steel or resin. The hole 4 does not need to be a through hole as shown in FIG. 3, but may be a groove that can be fitted with the pin 3.

In the present invention, since the anchor member 7 can be fixed to the rubber plate-shaped caisson mat 1 simply by pushing in or hitting it with a hammer as described above, it can be easily carried out by one person alone. . That is, as compared with the conventional mounting method using bolts and nuts which cannot be easily performed by one person, the working efficiency is further increased, and the construction cost is reduced.

As shown in FIG. 4, after the embedded anchor member is erected, the caisson mat is laid at a designated place, a formwork is assembled thereon according to a conventional method, and concrete is poured into the formwork. A concrete caisson is formed by consolidation.

The number of through holes of the caisson mat and the shape, material and size of the embedded anchor member in the present invention may be appropriately selected according to the dimensions and shape of the caisson to be joined.

The size and thickness of the rubber plate-shaped caisson mat according to the present invention are also appropriately selected according to the size and shape of the caisson to be constructed, and are not particularly limited. 1000mm, width 2000m
m and a thickness of about 30 mm are common.

[0022]

As described above, in the caisson mat of the present invention, in the state where the caisson mat is arranged or stacked with a simple member, the embedded anchor member is attached to the caisson mat from one side. Can be carried out easily by one person, thereby improving the working efficiency and reducing the construction cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred example of a self-locking pin according to the present invention.

FIG. 2 is an explanatory view showing a method of attaching an anchor member to a caisson mat of the present invention.

FIG. 3 is a partial sectional view showing a distal end portion of the anchor member according to the present invention.

FIG. 4 is a perspective view of the caisson mat during mounting of the embedded anchor member.

FIG. 5 is a perspective view showing a state in which a concrete caisson to which a rubber plate-shaped caisson mat is attached is installed on a waste stone mound.

FIG. 6 is a perspective view showing a state in which concrete caissons are arranged in a row on a discard mound.

FIG. 7 is a perspective view of a caisson mat after attaching a conventional anchor member.

FIG. 8 is an explanatory view showing a method of attaching an anchor member to a caisson mat of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Caisson mat 2 Hollow guide 3 Pin 4 Hole 5 Concrete caisson 6 Discard stone mound 7 Anchor member 10 Bolt head 11 Head cover 12 Rubber plate-like mat 13 Counterbore 14 Nut 15 Threaded part

Claims (6)

[Claims] 1. A rubber caisson mat connected to a bottom surface of a concrete caisson, wherein the rubber plate caisson mat is provided with through holes at a plurality of appropriate positions. A self-locking pin comprising a hollow guide and at least one set of pins facing each other through the thickness of the hollow guide, and a hole provided near the tip of an anchor member inserted into the hollow guide; A caisson mat characterized by being able to fit with a pin. 2. A caisson mat in the form of a rubber plate connected to the bottom surface of a concrete caisson, wherein the rubber plate-shaped caisson mat is provided with through holes at a plurality of appropriate places. A self-locking pin comprising a hollow guide and at least one set of pins that face each other through the thickness of the hollow guide, and a groove provided near the tip of an anchor member inserted into the hollow guide; A caisson mat characterized by being able to fit with a pin. 3. The caisson mat according to claim 1, wherein the self-locking pin comprises the hollow guide and two sets of pins that face each other through the thickness of the hollow guide. 4. The caisson mat according to claim 3, wherein said two sets of pins are provided in said self-locking pin, one set each in two directions orthogonal to each other. 5. The caisson mat according to claim 1, wherein a tip of said anchor member is formed in a tapered shape. 6. The method for attaching an anchor member to a caisson mat according to any one of claims 1 to 5, wherein the anchor member provided with a hole or a groove near a distal end is inserted into a hollow guide. Alternatively, a method of attaching an anchor member to a caisson mat, wherein a groove and a pin are fitted.