JP6989908B2 - Reinforcing material connection structure and connection method - Google Patents

Description

The present invention relates to a connecting structure and a connecting method of the reinforcing material used in the ground reinforcement soil method.

Rockbolt method is known as a ground reinforcement soil method used for measures against slope collapse. The rock bolt work inserts a reinforcing material such as a rock bolt or a deformed steel bar into the ground, and applies a passive tensile force due to the deformation of the ground to the reinforcing material, thereby deforming the ground and slipping the soil mass. It is a construction method that suppresses. Further, Patent Document 1 discloses a construction method for further stabilizing a slope by connecting the heads of adjacent reinforcing members with a wire.

Unlike the ground anchor work in which the anchor body is used as the fixing part, such a lock bolt work is a method in which the entire slope is used as the fixing part, so that the tension of the wire connecting the heads of the adjacent reinforcing materials is increased. Insufficient or stretched wires can reduce the stability of slopes.

Japanese Unexamined Patent Publication No. 2014-177835

Therefore, the present invention has been made in view of the above circumstances, and has been made as an object to provide a connecting structure and a connecting method of a reinforcing material having improved stability of a slope.

In order to solve the above problems, the connecting structure of the reinforcing material according to the present invention is a connecting structure of the reinforcing materials arranged on the slope, and is a flat plate-like structure for connecting the heads of the adjacent reinforcing materials to each other. It has a connecting rod, and the connecting rod is divided into a connecting rod attached to one reinforcing material, a connecting rod attached to the other reinforcing material, and a connecting rod connecting both reinforcing materials. The connecting rod attached to the material is provided with a reinforcing material insertion hole formed at the center in the length direction and a bolt insertion hole formed at both ends in the length direction, and connects both of the reinforcing materials. Long holes extending along the length direction are provided at both ends of the rod, and the bolt is inserted into the bolt insertion hole on one end side of the connecting rod attached to the one reinforcing material, and the tip of the bolt is inserted. Is inserted into the elongated hole on one end side of the connecting rod connecting the reinforcing material, and by tightening the nut attached to the tip of the bolt, one end side of the connecting rod attached to the one reinforcing material and the said. One end side of the connecting rod connecting the reinforcing material is fixed, the bolt is inserted into the bolt insertion hole on the one end side of the connecting rod attached to the other reinforcing material, and the tip end portion of the bolt connects the reinforcing material. By inserting a nut inserted into the elongated hole on the other end side of the connecting rod and tightening the nut attached to the tip of the bolt, the connection between one end side of the connecting rod attached to the other reinforcing material and the reinforcing material is connected. It is characterized in that the other end side of the rod is fixed .

Further, the method of connecting the reinforcing materials according to the present invention is a method of connecting the reinforcing materials arranged on the slope, and when connecting the heads of the adjacent reinforcing materials with each other by a flat plate-shaped connecting rod , the above -mentioned method. The connecting rod is divided into a flat plate-shaped connecting rod to be attached to one reinforcing material, a flat plate-shaped connecting rod to be attached to the other reinforcing material, and a flat plate-shaped connecting rod to connect both reinforcing materials. The connecting rod to be attached to the material is provided with a reinforcing material insertion hole formed at the center in the length direction and a bolt insertion hole formed at both ends in the length direction, and both ends of the connecting rod connecting both of the reinforcing materials are provided. , A long hole extending along the length direction is provided, a bolt is inserted into the bolt insertion hole on one end side of the connecting rod attached to the one reinforcing material, and the tip of the bolt is connected to connect the reinforcing material. By inserting it into the elongated hole on one end side of the rod and tightening the nut attached to the tip of the bolt, one end side of the connecting rod attached to the one reinforcing material and one end side of the connecting rod connecting the reinforcing material. A bolt is inserted into the bolt insertion hole on one end side of the connecting rod attached to the other reinforcing material, and the tip of the bolt is attached to the other end side of the connecting rod connecting the reinforcing material. By inserting it through the elongated hole and tightening the nut attached to the tip of the bolt, one end side of the connecting rod attached to the other reinforcing material and the other end side of the connecting rod connecting the reinforcing material are fixed. It is characterized by including steps .

According to the present invention, the stability of slopes can be improved.

It is a conceptual diagram of the connection structure of the reinforcing material which concerns on 1st Embodiment. It is a figure which shows the cross section of X1-X1 in FIG. It is explanatory drawing of the connection structure of the reinforcing material which concerns on 1st Embodiment, and is the figure which shows the connection structure between the lock bolts which are vertically adjacent. It is a figure which shows the connection structure between the flat bar attached to the lock bolt which is vertically adjacent. It is an arrow view of X2-X2 in FIG. It is a top view of the flat bar attached to the lock bolt used in 1st Embodiment. It is a top view of the flat bar connecting the flat bars of FIG. It is explanatory drawing of the connection structure of the reinforcing material which concerns on 1st Embodiment, and is the figure which shows the connection structure between rock bolts adjacent to each other sideways. It is a figure which shows the connection structure between the flat bars attached to the lock bolt adjacent to the side. 9 is an arrow view of X3-X3 in FIG. 9. It is a conceptual diagram of the connection structure of the reinforcing material which concerns on 2nd Embodiment. It is explanatory drawing of the connection structure of the reinforcing material which concerns on 2nd Embodiment. It is a conceptual diagram of the connection structure of the reinforcing material which concerns on other embodiment. It is explanatory drawing of another Example (flat bar non-grounded type).

(First Embodiment)
The first embodiment of the present invention will be described with reference to the attached figure.
FIG. 1 is a conceptual diagram of a connecting structure (hereinafter referred to as “connecting structure”) of the reinforcing material according to the first embodiment. In the connecting structure of the first embodiment, a lock bolt is used as a reinforcing material. Here, for convenience of explanation, a plurality of lock bolts arranged on the slope 2 are collectively referred to as a lock bolt 3, and each lock bolt is referred to as a numerical alphabet as necessary, for example, "3A". Is given. Further, the vertical and horizontal directions in FIG. 1 are referred to as vertical and horizontal directions as they are.

The lock bolt 3 is constructed on the slope 2 by the lock bolt work. As shown in FIG. 1, the lock bolt 3 extends vertically along the slope 2 and has a plurality of vertical borders G1 (first border ) arranged at regular intervals D1 in the left-right direction. ) And the intersection of a plurality of horizontal frame lines G2 (second frame lines) extending in the left-right direction along the slope 2 and arranged at regular intervals D2 in the vertical direction (hereinafter, "bolt insertion position"). It is placed in). In the first embodiment, the interval D1 of the vertical frame line G1 and the interval D2 of the horizontal frame line G2 are set to be equal (D1 = D2).

The lock bolt 3 is driven perpendicular to the slope 2 and is fixed to the ground 1 (ground) via the injection material 4 as shown in FIG. As a result, a passive tensile force due to the deformation of the ground is applied to the lock bolt 3. In the first embodiment, cement milk is used as the injection material 4, but it is not intended to be limited to this.

At the bolt insertion position, a pressure receiving plate 5 having a ground plane 5A (see FIG. 2) is arranged. The pressure receiving plate 5 has a base portion 6 and four extending portions 7 extending laterally (up / down / left / right direction) from the base portion 6. As shown in FIG. 2, a shaft hole 8 through which the head portion of the lock bolt 3 (the tip portion protruding from the slope 2) is inserted is formed in the center of the base portion 6 of the pressure receiving plate 5. A recess 9 for accommodating a lock nut 18 mounted on the head of the lock bolt 3 is formed on the upper surface 5B of the pressure receiving plate 5. The pressure receiving plate 5 is pressed against the slope 2 by the axial force generated in the lock bolt 3 by tightening the lock nut 18. As the material of the pressure receiving plate 5 in the first embodiment, a carbon steel material for machine structure such as SS400 is used, but cast iron, concrete, synthetic resin, fiber reinforced plastic and the like can be appropriately used.

The heads of adjacent lock bolts 3 are connected to each other by using a flat bar (flat plate-shaped connecting rod). Here, for convenience of explanation, the flat bar attached to the head of the lock bolt 3 is collectively referred to as a flat bar 11, and each flat bar is referred to as a numerical alphabet as necessary, for example, "11A". Is given. Further, the flat bar 11 and the flat bar 10 described later are made of SS400 flat steel specified by JISG3101, but are not intended to be limited to carbon steel materials for machine structure, for example, carbon fiber reinforced. Fiber reinforced plastic (FRP) such as plastic (CFRP) can be appropriately used.

Here, for convenience of explanation, the lock bolts 3 located on the same vertical frame line G1 and adjacent to each other are referred to as lock bolts 3A and 3B, and the connecting structure of the lock bolts 3A and 3B will be described. As shown in FIG. 3, the heads of the lock bolts 3A and 3B are connected to each other by the flat bars 11A, 11B and 10. The total length L1 (see FIG. 1) of the flat bar 11A is set longer than the width W1 of one side of the pressure receiving plate 5 (see FIG. 1) and shorter than the vertical (vertical) frame center spacing D2 (see FIG. 1). ..

As shown in FIG. 6, a lock bolt insertion hole 12A that penetrates the flat bar 11A in the plate thickness direction is formed at the center of the flat bar 11A in the length direction. The inner diameter of the lock bolt insertion hole 12A is determined so that the lock bolt 3 is fitted with a predetermined fit. A pair of bolt insertion holes 13A and 13A arranged at predetermined intervals are provided symmetrically at both ends of the flat bar 11A in the length direction with the lock bolt insertion holes 12A as the center of symmetry. The flat bar 11A is attached to the lock bolt 3A by inserting the head of the lock bolt 3A into the lock bolt insertion hole 12A.

The bolt insertion holes 13A and 13A on one end side of the flat bar 11A, the bolt insertion holes 13A and 13A on the other end side, and the lock bolt insertion holes 12A are arranged on the same straight line. Further, the flat bar 11B in the first embodiment has the same shape as the flat bar 11A. Therefore, a detailed description of the flat bar 11B will be omitted for the purpose of simplifying the description of the specification.

As shown in FIG. 3, the flat bar 10 is interposed between the flat bar 11A attached to the head of the lock bolt 3A and the flat bar 11B attached to the head of the lock bolt 3B. In other words, between the heads of the lock bolts 3A and 3B, the flat bar 11A attached to the head of the lock bolt 3A and the flat bar 11B attached to the head of the lock bolt 3B are provided by the flat bar 10. It is connected by connecting. One end of the flat bar 10 is superposed on the upper surface of one end side (lower side in FIG. 3) of the flat bar 11A, and the other end side is superposed on the upper surface of one end side (upper side in FIG. 3) of the flat bar 11B.

At both ends of the flat bar 10, that is, the portions overlapped with the flat bars 11A and 11B, elongated holes 14A and 14B extending along the length direction of the flat bar 10 (direction along the vertical frame line G1) (FIG. 7) is provided. The tips of the bolts 15A and 15A (see FIG. 4) inserted into the bolt insertion holes 13A and 13A on the one end side of the flat bar 11A are inserted into the elongated holes 14A on one end side of the flat bar 10. Nuts 16A and 16A (see FIG. 5) are attached to the tips of the bolts 15A and 15A. On the other hand, the tips of the bolts 15B and 15B (see FIG. 4) inserted into the bolt insertion holes 13B and 13B on one end side of the flat bar 11B are inserted into the elongated holes 14B on the other end side of the flat bar 10. To. Nuts 16B and 16B (see FIG. 5) are attached to the tips of the bolts 15B and 15B.

The heads of the lock bolts 3A and 3B are connected to each other by tightening the nuts attached to the bolts 15A and 15A and the nuts attached to the bolts 15B and 15B. The total length (length of the oval) of each of the elongated holes 14A and 14B of the flat bar 10 is determined based on the assumed distance between the centers of the frames D2. Further, in the first embodiment, two bolts 15 are inserted through one elongated hole 14, but the bolt insertion hole 13 and the elongated hole 14 are made to correspond one-to-one (the elongated hole 14 is divided into two). Can be configured in.

Here, for convenience of explanation, the lock bolts 3 located on the same horizontal frame line G2 and adjacent to each other are referred to as "lock bolts 3A, 3C", and the connecting structure of the lock bolts 3A, 3C will be described. As shown in FIG. 8, the heads of the lock bolts 3A and 3C are connected to each other by flat bars 21A, 21C and 20. In the first embodiment, the flat bars 21A and 21C have the same shape as the flat bars 11A and 11B described above. In other words, the flat bars 11A, 11B, 21A, and 21C have different reference numerals for convenience of explanation, but are the same parts. Similarly, in the first embodiment, the flat bar 20 is the same component as the flat bar 10 described above. Therefore, for the purpose of simplifying the description of the specification, detailed description of the flat bars 21A, 21C, 20 will be omitted.

Referring to FIG. 1, the flat bar 21A is mounted on the head of the lock bolt 3A to which the vertical flat bar 11A is mounted and is arranged so as to extend along the horizontal frame line G2. That is, the flat bar 11A and the flat bar 21A are arranged in a cross shape, and the lock bolt 3A is inserted into the lock bolt insertion holes 12A and 12B at the intersection. On the other hand, the flat bar 21C is attached to the head of the lock bolt 3C to which the vertical flat bar 11C is attached, and is arranged so as to extend along the horizontal frame line G2. That is, the flat bar 11C and the flat bar 21C are arranged in a cross shape, and the lock bolt 3C is inserted into the lock bolt insertion holes 22A and 22C at the intersection. As shown in FIG. 8, between the heads of the lock bolts 3A and 3C, a flat bar 21A mounted on the head of the lock bolt 3A and a flat bar 21C mounted on the head of the lock bolt 3C are inserted. , Connected by connecting with a flat bar 20.

Next, a method of connecting the reinforcing material according to the first embodiment will be described. A lock bolt 3 is previously placed at each bolt insertion position defined on the slope 2.
First, a method of connecting the lock bolts 3 arranged on the same vertical frame line G1 will be described. First, mainly referring to FIG. 3, the lock bolt insertion hole 12A of the flat bar 11A is inserted through the head of the lock bolt 3A, and the flat bar 11A is attached to the lock bolt 3A. Similarly, the lock bolt insertion hole 12B of the flat bar 11B is inserted through the head of the lock bolt 3B, and the flat bar 11B is attached to the lock bolt 3B.

Next, the one end side of the flat bar 10 is overlapped on the upper surface of the one end side of the flat bar 11A, and the other end side of the flat bar 10 is overlapped on the upper surface of the one end side of the flat bar 11B. In this state, mainly referring to FIGS. 4 and 5, the bolts 15A and 15A are inserted into the bolt insertion holes 13A and 13A (see FIG. 6) on one end side of the flat bar 11A, and the tips of the bolts 15A and 15A are inserted. A portion is inserted into a long hole 14A on one end side of the flat bar 10, and nuts 16A and 16A are attached to the tip portions of the bolts 15A and 15A. Similarly, the bolts 15B and 15B are inserted into the bolt insertion holes 13B and 13B (see FIG. 6) on one end side of the flat bar 11B, and the tip ends of the bolts 15B and 15B are elongated holes on the other end side of the flat bar 10. It is inserted through 14B, and nuts 16B and 16B are attached to the tips of the bolts 15B and 15B.

In this state, by tightening the nuts 16A, 16A, 16B, 16B, the heads of the lock bolt 3A and the lock bolt 3B are connected via the flat bars 11A, 11B, 10. Subsequently, the heads of the lock bolts 3 arranged on the same vertical frame line G1 are sequentially connected in the same manner.

Next, a method of connecting the lock bolts 3 arranged on the same horizontal frame line G2 will be described. First, mainly referring to FIG. 8, the lock bolt insertion hole 22A of the flat bar 21A is inserted into the head of the lock bolt 3A to which the flat bar 11A is mounted, and the flat bar 21A is mounted on the lock bolt 3A. Similarly, the lock bolt insertion hole 22C of the flat bar 21C is inserted into the head of the lock bolt 3C to which the flat bar 11C is mounted, and the flat bar 21C is mounted on the lock bolt 3C.

Next, the one end side of the flat bar 20 is overlapped on the upper surface of the one end side of the flat bar 21A, and the other end side of the flat bar 20 is overlapped on the upper surface of the one end side of the flat bar 21C. In this state, mainly referring to FIGS. 9 and 10, the bolts 25A and 25A are inserted into the bolt insertion holes 23A and 23A (see FIG. 6) on one end side of the flat bar 21A, and the tips of the bolts 25A and 25A are inserted. A portion is inserted into a long hole 24A on one end side of the flat bar 20, and nuts 26A and 26A are attached to the tip portions of the bolts 25A and 25A. Similarly, the bolts 25C and 25C are inserted into the bolt insertion holes 23C and 23C (see FIG. 6) on one end side of the flat bar 21C, and the tip ends of the bolts 25C and 25C are elongated holes on the other end side of the flat bar 20. It is inserted through 24C, and nuts 26C and 26C are attached to the tips of the bolts 25C and 25C.

In this state, by tightening the nuts 26A, 26A, 26C, 26C, the heads of the lock bolt 3A and the lock bolt 3C are connected via the flat bars 21A, 21C, 20. Subsequently, the heads of the lock bolts 3 arranged on the same horizontal frame line G2 are sequentially connected in the same manner. By connecting the heads of the adjacent lock bolts 3 in this way, a grid-like legal frame is formed as a whole. Finally, after arranging the pressure receiving plate 5 at each bolt insertion position, the lock nut 18 is attached to the head of each lock bolt 3 and the lock nut 18 is tightened with a predetermined torque.

In the first embodiment, the following effects are obtained.
According to the first embodiment, since the heads of adjacent lock bolts (reinforcing materials) are connected to each other by a flat bar (flat plate-shaped connecting rod), the tensile force acting on some of the lock bolts is increased. It can be distributed over the entire lock bolt via the flat bar.
In this way, the passive tensile force associated with the deformation of the ground is received (beared) by all the lock bolts connected by the flat bar, so it is possible to suppress the deformation of the ground and the slip of the soil mass. The stability of slopes can be improved.
Further, in the first embodiment, since the flat steel of SS400 (see "JIS3101" for the mechanical properties) is used as the flat bar (connecting rod), the conventional technique of connecting the heads of the adjacent lock bolts with a wire is used. As described above, the extension of the wire does not concentrate the tensile force on some of the lock bolts, and the deformation of the ground and the slip of the soil mass can be more reliably suppressed.
Further, in the first embodiment, the flat bar for connecting the adjacent lock bolts arranged on the same frame line is a flat bar mounted on one lock bolt and a flat bar mounted on the other lock bolt. And the flat bar (connecting flat bar) that connects both flat bars, and the bolt insertion hole on the connecting flat bar side is a long hole that extends in the connecting direction (flat bar length direction). , The error in the distance between adjacent lock bolts can be absorbed by the elongated hole.

(Second Embodiment)
The second embodiment of the present invention will be described mainly focusing on the differences from the first embodiment.
The same or corresponding parts as those in the first embodiment are represented by the same designation and the same reference numerals. Further, the vertical and horizontal directions in FIG. 11 are referred to as vertical and horizontal directions as they are.

In the first embodiment described above, the flat bar 11A (21A) attached to the head of the lock bolt 3A and the flat bar 11B (21C) attached to the head of the lock bolt 3B (3C) are the flat bar 10. By being connected by (20), the heads of the adjacent lock bolts 3A and 3B (3C) are connected to each other. That is, in the first embodiment, the flat bar connecting rods for connecting the heads of the adjacent lock bolts 3A and 3B (3C) are the flat bar 11A (21A), the flat bar 11B (21C), and the flat bar 10. It is divided into (20) and configured.

On the other hand, in the second embodiment, a series of lock bolts 3 (reinforcing materials) adjacent to each other on a straight line are connected by a single flat bar 41, 51 (connecting rod), that is, the same vertical frame line. A plurality of lock bolts 3 (4 in the second embodiment) arranged on G1 are connected by a single flat bar 41 having no joint, and are arranged on the same horizontal frame line G2. A plurality of (three in the second embodiment) lock bolts 3 are connected by a single seamless flat bar 51.

As shown in FIG. 12, the flat bar 41 has a plurality of lock bolt insertion holes (only one is shown in FIG. 12) corresponding to each lock bolt 3 arranged on the same vertical frame line G1. 42 is formed. Each lock bolt insertion hole 42 is formed by an elongated hole extending along the length direction (direction along the vertical frame line G1) of the flat bar 41. On the other hand, the flat bar 51 is formed with a plurality of lock bolt insertion holes 52 (only one is shown in FIG. 12) corresponding to each lock bolt 3 arranged on the same horizontal frame line G2. Each lock bolt insertion hole 52 is formed by an elongated hole extending along the length direction of the flat bar 51 (direction along the horizontal frame line G2).

Then, when connecting the heads of the lock bolts 3 placed at the lock bolt insertion positions on the slope 2, first, the heads of the lock bolts 3 arranged on the same vertical frame line G1 are connected to each other. The corresponding lock bolt insertion hole 42 of the flat bar 41 is inserted. Next, the corresponding lock bolt insertion hole 52 of the flat bar 51 is inserted into the head of each lock bolt 3 arranged on the same horizontal frame line G2. As a result, a series of lock bolts 3 (reinforcing materials) adjacent to each other on a straight line are connected by a single flat bar 41, 51 (connecting rod).

Here, since the lock bolt insertion holes 42 and 52 of the flat bars 41 and 51 are elongated holes, between the lock bolt 3 inserted through the lock bolt insertion holes 42 and 52 and the lock bolt insertion holes 42 and 52. A gap is formed. In order to disperse the tensile force acting on some lock bolts to the entire lock bolt 3 via the flat bars 41, 51, the gap is filled, in other words, the lock bolt 3 and the lock bolt insertion holes 42, 52. It is necessary to eliminate the play with (long hole). In order to eliminate the play, a means such as inserting a jig into the gap or filling the gap with a filler can be appropriately selected.

Then, after arranging the pressure receiving plate 5 at each bolt insertion position, the lock nut 18 (see FIG. 2) is attached to the head of each lock bolt 3 and the lock nut 18 is tightened with a predetermined torque.
According to the second embodiment, it has the same effect as that of the first embodiment described above.
In the first and second embodiments, a flat bar (flat steel) is used for the connecting rod, but it is not intended to limit the connecting rod to the flat bar, and the connecting rod is, for example, carbon fiber reinforced. A flat plate made of fiber reinforced plastic (FRP) or the like containing plastic (CFRP) can be used.

The above-mentioned first and second embodiments can be configured as follows.
In the first and second embodiments, when the lock bolts 3 (reinforcing materials) are arranged in a grid pattern on the slope 2, in other words, the bolt insertion positions are a plurality of vertical frame lines G1 and a plurality of horizontal frames. The case of the intersection with the frame line G2 has been described, but as shown in FIG. 13, when the lock bolts 3 are arranged in a staggered manner on the slope 2, in other words, the bolt insertion positions are diagonally to the right of a plurality of bolts. The connecting structure of the first and second embodiments can also be applied when the diagonal line S1 extending downward and the plurality of diagonal lines S2 extending diagonally upward to the right are the intersections. Note that FIG. 13 shows an embodiment in which the lock bolts 3 arranged in a staggered pattern on the slope 2 are connected by applying the connection structure of the second embodiment.

Further, in the first and second embodiments, the flat bar (flat plate-shaped connecting rod) is grounded to the slope 2, but as shown in FIG. 14, the flat bar 31 is grounded from the slope 2. It can be a non-grounded type that floats. In the embodiment shown in FIG. 14, after inserting the lock bolt insertion hole 32 of the flat bar 31 into the portion of the head of the existing lock bolt 3 (reinforcing material) protruding from the lock nut 18, the head of the lock bolt 3 is inserted. A nut 33 is attached to the portion, and the flat bar 31 is sandwiched between a pair of nuts 18 and 33 attached to the head of the lock bolt 3. As a result, the flat bar 31 can be retrofitted to the existing lock bolt 3 provided with the pressure receiving plate 5, and the stability of the slope where the lock bolt 3 is already installed can be further improved.

1 Ground, 2 Slope, 3 Lock bolt (reinforcing material), 10, 11, 20, 21 Flat bar (connecting rod)

Claims (5)

It is a connecting structure of reinforcing materials placed on the slope.
It has a flat plate-shaped connecting rod that connects the heads of adjacent reinforcing materials to each other.
The connecting rod is divided into a connecting rod attached to one reinforcing material, a connecting rod attached to the other reinforcing material, and a connecting rod connecting both reinforcing materials.
The connecting rod attached to the reinforcing material is provided with a reinforcing material insertion hole formed at the center in the length direction and a bolt insertion hole formed at both ends in the length direction.
At both ends of the connecting rod connecting both of the reinforcing members, elongated holes extending in the length direction are provided.
A bolt is inserted into the bolt insertion hole on one end side of the connecting rod attached to the one reinforcing material, and the tip end portion of the bolt is inserted into the elongated hole on one end side of the connecting rod connecting the reinforcing material. By tightening the nut attached to the tip of the bolt, one end side of the connecting rod attached to the one reinforcing material and one end side of the connecting rod connecting the reinforcing material are fixed.
A bolt is inserted into the bolt insertion hole on one end side of the connecting rod mounted on the other reinforcing material, and the tip end portion of the bolt is inserted into the elongated hole on the other end side of the connecting rod connecting the reinforcing material. By tightening the nut attached to the tip of the bolt, one end side of the connecting rod attached to the other reinforcing material and the other end side of the connecting rod connecting the reinforcing material are fixed . Reinforcing material connection structure. It is a connecting structure of reinforcing materials placed on the slope.
It has a flat plate-shaped connecting rod that connects the heads of a series of adjacent reinforcing members on the same frame line.
The connecting rod is provided with a plurality of bolt insertion holes corresponding to the heads of the reinforcing materials arranged on the same frame line.
Each bolt insertion hole is formed by an elongated hole extending along the length direction of the connecting rod.
Each bolt insertion hole of the connecting rod is inserted into the head of each reinforcing material arranged on the first frame line.
Each bolt insertion hole of the connecting rod is inserted into the head of each reinforcing material arranged on the second frame line intersecting with the first frame line.
A connecting structure of reinforcing materials, characterized in that a series of adjacent reinforcing materials on the same frame line are connected by a single connecting rod by tightening a nut attached to the head of each reinforcing material . The connecting structure of the reinforcing material according to claim 1 or 2 , wherein the flat plate-shaped connecting rod is a flat bar. It is a method of connecting reinforcing materials placed on the slope.
When connecting the heads of adjacent reinforcing materials with a flat plate-shaped connecting rod ,
The connecting rod is divided into a flat plate-shaped connecting rod to be attached to one reinforcing material, a flat plate-shaped connecting rod to be attached to the other reinforcing material, and a flat plate-shaped connecting rod connecting both reinforcing materials.
The connecting rod to be attached to the reinforcing material is provided with a reinforcing material insertion hole formed at the center in the length direction and a bolt insertion hole formed at both ends in the length direction.
An elongated hole extending in the length direction is provided at both ends of the connecting rod connecting both of the reinforcing members.
A bolt is inserted into the bolt insertion hole on one end side of the connecting rod attached to the one reinforcing material, and the tip end portion of the bolt is inserted into the elongated hole on one end side of the connecting rod connecting the reinforcing material. A step of fixing one end side of the connecting rod attached to the one reinforcing material and one end side of the connecting rod connecting the reinforcing material by tightening the nut attached to the tip of the bolt.
A bolt is inserted into the bolt insertion hole on one end side of the connecting rod attached to the other reinforcing material, and the tip end portion of the bolt is inserted into the elongated hole on the other end side of the connecting rod connecting the reinforcing material. It includes a step of fixing one end side of a connecting rod attached to the other reinforcing material and the other end side of the connecting rod connecting the reinforcing material by tightening a nut attached to the tip of the bolt. A characteristic method of connecting reinforcing materials. It is a method of connecting reinforcing materials placed on the slope.
When connecting the heads of a series of adjacent reinforcing members on the same frame line with a flat plate-shaped connecting rod,
The connecting rod is provided with a plurality of bolt insertion holes corresponding to the heads of the reinforcing materials arranged on the same frame line.
Each bolt insertion hole is formed by an elongated hole extending along the length direction of the connecting rod.
Insert each bolt insertion hole of the connecting rod into the head of each reinforcing material arranged on the first frame line, and insert it.
Each bolt insertion hole of the connecting rod is inserted into the head of each reinforcing material arranged on the second frame line intersecting with the first frame line.
A method for connecting a reinforcing material, which comprises tightening a nut attached to the head of the reinforcing material to connect a series of adjacent reinforcing materials on the same frame line with a single connecting rod.

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