JP3295060B2 - Connection structure between wall material and reinforcement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of filling an embankment material on the back side of each wall material stacked in a plurality of stages, and embedding a reinforcing material connected to the back surface of the wall material in the embankment material. The present invention relates to a connection structure between a wall material and a reinforcing material in a reinforced soil retaining wall as described above.

[0002]

2. Description of the Related Art A conventional connection structure between a wall material and a reinforcing material is as follows.
(1) JP-A-7-90865, (2) Tokiko 8-
No. 6325, (3) Japanese Patent Publication No. 6-96856,
And (4) Japanese Unexamined Utility Model Publication No. 3-79345 is known.

[0003] In the prior art (1), a reinforcing bar is continuously inserted vertically into a wall material to be stacked, and one end of the reinforcing material embedded in an embankment material piled up behind the wall material is attached to the reinforcing bar. It is configured to be directly connected. And this connection part is hardened with mortar. Conventional technology (2)
Has a sliding-type reinforcing member connecting member attached to the back of the wall material, and one end of the reinforcing member is connected to the connecting member so as to be able to slide up and down and swing right and left. ing. Further, the prior art (3) describes an example in which an expanded metal having a predetermined planar shape is used as a reinforcing material. Further, the prior art (4) shows a connection structure using a connection body provided with a mechanism for absorbing each of a rotational displacement and a vertical displacement of a wall material and a reinforcing material facing each other.

[0004]

In these conventional techniques (1) to (3), one end of each reinforcing material embedded in the embankment material is fixed to the back surface of the wall material. Since it is configured to be directly connected to the connecting member, even if this connecting portion has a degree of freedom in the vertical and horizontal directions as shown in the prior arts (2) and (3). The operation of connecting the end of the reinforcing member, which is a relatively large and rigid member, to a connecting member fixed to the wall material and having no degree of freedom has been troublesome. Further, in the prior art (4), the connecting body for connecting the wall material and the reinforcing material has respective absorbing mechanisms for the relative rotational displacement and vertical displacement of the wall material and the reinforcing material. Since the rotation of the body in the vertical and horizontal directions is performed about the center of each rotation axis, each rotation is performed about the fixed axis, and the wall material Although there is a degree of freedom in the rotation direction in the vertical and horizontal directions, the connection of this rotation connection part is cramped, and the connection work of this is troublesome. is there.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and makes it possible to extremely easily connect a connecting member fixed to the back surface of a wall material to a reinforcing member embedded in an embankment material. It is an object of the present invention to provide a connection structure between a wall material and a reinforcing material so that the reinforcing material does not break even if a change such as consolidation settlement occurs in the material.

[0006]

In order to achieve the above-mentioned object, a connecting structure for a wall material and a reinforcing agent according to the present invention is provided so that both ends are integrally buried in a rear portion of the wall material and provided in a vertical direction. A connecting rod and a U-shaped rod in which a bar is formed in a U-shape, while being slidable in the longitudinal direction of the U-shaped rod,
A connecting member for connecting the connecting member so as to engage in the pull-out direction, and a bracket provided on the connecting member, and a bracket provided on one end of the reinforcing material embedded in the embankment material to be filled into the back side of the wall material; And connecting the connecting rod to the connecting bracket by passing the connecting rod through the inside of the U-shaped rod of the connecting bracket, and connecting the bracket of the reinforcing member to the bracket of the connecting bracket. It is configured to be connected.

A connecting structure for a wall material and a reinforcing material according to another aspect of the present invention includes a connecting rod having both ends buried integrally in a back portion of the wall material and provided in a vertical direction, and a plate material formed into a U shape. A shaft member is rotatably connected to a tip end of the U-shaped plate which is opposed to the tip end of the U-shaped plate, and a connection fitting having a bracket provided on the shaft member and a back surface of the wall material are filled. And a bracket provided at one end of a reinforcing material to be embedded in the embankment to be connected. The connecting rod is connected to the connecting rod by passing the connecting rod through the inside of the U-shaped plate of the connecting metal. Are connected.

[0008]

[Operation] The connection fitting is connected to the connection rod of the wall material with extremely large degrees of freedom in all directions, such as the vertical and horizontal directions and the front and rear directions. Therefore, the work of connecting the reinforcing material to the wall material through the connection fitting can be easily performed. In addition, the reinforcing material is deformed in accordance with the consolidation settlement of the embankment material, thereby preventing breakage.

[0009]

Embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a concrete block which is an example of a wall material. The concrete block 1 includes a wall portion 2 having a forwardly inclined shape and a back surface of the wall portion 2.
And two leg portions 3, 3 protruding at positions spaced apart in the lateral direction. The projections 4 are provided on the upper surfaces of the leg portions 3, and the concave portions 5 corresponding to the projections 4 are provided on the lower surfaces. The concrete blocks 1 are stacked in a staggered or flat-stacked shape, and the lower concrete The recess 5 of the upper concrete block 1 engages with the projection 4 of the block 1.

Each leg portion 3, 3 of the concrete block 1
Is provided with a connecting rod 6 having both ends embedded in a concrete block 1 in the vertical direction. The connecting rod 6 is configured to protrude from the end surfaces of the leg portions 3 and 3 in a U-shape as shown in FIG. 1, or as shown in FIG.
A concave portion 7 is provided in the concave portion 7.

Reference numeral 8 denotes a reinforcing material buried in the embankment material, and the reinforcing material 8 is in the form of a sheet having a lattice structure made of plastic. A supporting rod 9 having a length extending over the entire width of the reinforcing member 8 is connected to one end of the reinforcing member 8 by means of, for example, being wound around the connecting rod. The brackets 10, 10 are provided at substantially the same intervals as the intervals of. As shown in FIG. 4, the reinforcing member 8 is connected to connecting rods 6, 6 provided on the leg portions 3, 3 of the concrete block 1 by connecting metal fittings 11.

As long as the reinforcing member 8 is in the form of a sheet, it may be in the form of a net, a perforated plate, or the like. The constituent material may be any of a metal material and a plastic material. The width of the reinforcing member 8 is substantially the same as the width of the concrete block 1.

FIG. 5 is an enlarged view of the connecting metal fitting 11, and a U-shaped rod 12 having a U-shaped rod material.
And a connecting member 13 connected to the tips of the two rod portions of the U-shaped rod 12. Bracket 14 provided on connecting member 13 and bracket 1 of reinforcing material 8
Numerals 0 are connected by passing bolts 15 through holes provided in the respective holes and fixing them.

The connection between the U-shaped rod 12 and the connecting member 13 is performed by connecting the rod portion of the U-shaped rod 12 through the connecting member 13 and fixing a flange member 1 such as a nut fixed to the tip of the connecting member.
This is achieved by engaging in the pull-out direction at 2a. Therefore, the U-shaped rod 12 and the connecting member 13 are movably connected in the length direction of the rod portion. The connection between the connecting fitting 11 and the connecting rod 6 on the concrete block 1 side is performed by passing the connecting rod 6 inside the U-shaped rod 12 of the connecting fitting 11. As a result, the connecting fitting 11 is connected to the connecting rod 6 on the concrete block 1 side so as to be freely slidable up and down, as well as freely over the range of the U-shaped space of the connecting rod 12.

FIG. 6 shows a connecting fitting 11 'of a different embodiment, in which a connecting member 13' having a bracket 14 'at the tip of a U-shaped plate 12' made of a plate material is rotatable vertically. It is connected to. Even with this connection fitting 11 ', an extremely large but free connection can be made in all directions in addition to the vertical slide with respect to the connection rod 6.

Next, a method for constructing a reinforced soil retaining wall using the connection structure having the above-described configuration will be described with reference to FIG.

First, a foundation 16 is formed in the ground, a first-stage concrete block 1 is stacked on the foundation 16, and an embankment material 17 is filled on the back side thereof. At the same time, the reinforcing member 8 is connected to the connecting rod 6 of the concrete block 1 via connecting metal fittings 11 and 11 ′.
Is buried in the embankment material 17. Hereinafter, the concrete blocks 1 are sequentially stacked, and the filling of the embankment material 17 and the connection of the reinforcing material 8 are performed for each step.

The connection of the reinforcing member 8 to each concrete block 1 during the stacking operation is performed by the connection fitting 1.
In the case where the posture of the reinforcing material 8 is not regular, for example, when the sliding members 11 and 11 'are freely slid in the vertical direction and the front-rear direction with respect to the connecting rod 6 of the concrete block 1 and freely rotated in all directions, for example, Even if the reinforcing member 8 is inclined with respect to the horizontal direction or the height with respect to the concrete block 1 is not constant depending on the filling state of the embankment material 17, the connecting members 11 and 11 'can be easily connected.

After the above construction, when the embankment material 17 filled on the back side of the wall material 1 is settled or the ground changes, the reinforcing material 8 connected to each wall material 1 also changes accordingly. Depending on the degree of freedom of the connection fittings 11 and 11 ′ connecting the reinforcing member 8 to the wall member 1 with respect to the wall member 1,
The reinforcing member 8 is freely followed in accordance with the change of the embankment material 17, and the breakage thereof due to the ground change is prevented.

It is needless to say that the shape of the wall material 1 shown in the above embodiment is not particularly limited to the shape shown here. In the case where the connecting rod 6 formed in a U-shape as shown in FIG. 1 is used, the shape of other portions is not particularly limited as long as the back surface is flat.

[0021]

According to the present invention, the connecting metal fitting for connecting the reinforcing material to the back surface of the wall material is vertically attached to the wall material.
The connection can be made with extremely large degrees of freedom in all directions, that is, the left-right direction and the front-back direction. Therefore, the work of connecting the reinforcing material to the wall material via the connection fitting can be easily performed.

Also, even if the embankment material filled on the back side of the wall material changes due to consolidation settlement or the like after the construction, the reinforcing material deforms at the connection portion with the wall material and follows the change of the embankment material. This can prevent breakage of the reinforcing material due to changes in the embankment material.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a back surface of a concrete block serving as a wall material.

FIG. 2 is a perspective view showing another example of a back surface of a concrete block serving as a wall material.

FIG. 3 is a partially broken plan view showing an example of a reinforcing member.

FIG. 4 is a side view showing a connection state between a concrete block and a reinforcing material.

FIG. 5 is a perspective view showing an example of a connector.

FIG. 6 is a perspective view showing another example of the connector.

FIG. 7 is an explanatory view showing a stacked state of concrete blocks.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Concrete block, 2 ... Wall surface part, 3 ... Leg part, 4 ... Protrusion, 5,7 ... Recess, 6 ... Connecting rod, 8 ... Reinforcement material, 9 ... Support rod, 10, 14 ... Bracket, 1
1, 11 '... connecting bracket, 12 ... U-shaped rod, 12' ... U
Character board, 13, 13 '... connecting member, 15 ... bolt, 16 ...
Foundation, 17 ... embankment material.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ryuji Ito 1-8-1, Minami 1-Jo Nishi, Chuo-ku, Sapporo, Hokkaido Inside Kyowa Concrete Industries Co., Ltd. (72) Inventor Mutsuhiko Naraoka Minami 1-Jo Nishi, Chuo-ku, Sapporo, Hokkaido 1-8-8 Kyowa Concrete Industry Co., Ltd. (56) References JP-A-8-32674 (JP, A) JP-A-7-90865 (JP, A) JP-A-4-26235 (JP, U) Kaihei 3-79345 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02D 17/18 E02D 29/02

Claims (2)

(57) [Claims] 1. A longitudinally extending connecting rod having both ends buried integrally with a back portion of a wall material, and a U-shaped rod formed by forming a rod material into a U-shape, and sliding in a longitudinal direction of the U-shaped rod. A connecting member which connects the connecting member so as to be freely engaged with the connecting member and which is provided with a bracket on the connecting member; and one end of a reinforcing material embedded in the embankment material to be filled into the back side of the wall material. A wall member, wherein the connecting rod is connected to the connecting member by passing the connecting rod through the inside of the U-shaped rod of the connecting member, and the bracket of the reinforcing member is connected to the bracket of the connecting member. Connection structure with the reinforcement. 2. A connecting rod having both ends integrally buried in a rear portion of a wall material and provided in a vertical direction, and a front end portion of a U-shaped plate in which the plate material is formed in a U-shape. A shaft member is rotatably connected to the tip, and
The shaft member is provided with a connecting bracket provided with a bracket, and a bracket provided at one end of a reinforcing material embedded in the embankment material filling the back side of the wall material, and the connecting rod is passed through the inside of the U-shaped plate of the connecting metal member. A connecting structure for connecting a wall member and a reinforcing member, wherein the connecting rod is connected to the connecting member by a connecting means, and a bracket of the reinforcing member is connected to a bracket of the connecting member.