JP2002317443A - Connection structure for reinforcing body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure allowing easy connection of reinforcing bodies to be embedded in soil for reinforcing a slope. SOLUTION: The connection structure comprises anchor portions 18 formed into a lattice with vertical bars 20 extending along a direction A of the operation of soil pressure and lateral bars 21 to be fixed across the vertical bars and adapted to be embedded in soil, anchor bodies 14 formed into a lattice with vertical bars 25 extending along the direction A and lateral bars 26 to be fixed across the vertical bars and adapted to be embedded in the soil in the state of being partially overlapped with the anchor portions in the direction A, connection members 30 formed in an approximately U-shape with its bottoms extending to the direction A, having a plurality of locking portions 31 spaced from each other in the direction of extension of the lateral bars and connection portions 32 for connecting the locking portions at their opening ends, the locking portions being inserted through the anchor portions and the anchor bodies, and locking members 15 inserted through the locking portions of the connection members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure of a reinforcing member buried in the ground to prevent a slope from collapsing and to form a stable slope, and more particularly, to a reinforcing member. The present invention relates to a connecting member to be connected.

[0002]

2. Description of the Related Art For example, in the embankment construction method performed when a river embankment is laid or a road or a railway is laid, in order to prevent a slope from collapsing and form a stable slope, a retaining body is used. Provided. The earth retaining body has a plurality of substantially L
The vertical streaks in the shape of a letter are fixed to each other by a plurality of horizontal streaks and are formed in a lattice shape, and in the soil retaining wall provided along the slope where the earth pressure acts, and in the soil bent and embanked from below the retaining wall It is formed in a substantially L-shape by an anchor portion to be buried. Such a retaining body receives the earth pressure acting on the slope by the retaining wall and locks the slope, and the displacement of the retaining wall is prevented by the frictional resistance that the anchor portion receives from the surrounding soil and the collapse of the slope. Preventing.

In order to prevent the slope from collapsing,
For example, depending on the height of the embankment, local environment, etc., a large earth pressure may act on the slope,
In order to reliably receive this large earth pressure, it is necessary to increase the length of the anchor portion of the earth retaining body, that is, the anchor length. However, the length of the anchor portion of the earth retaining body is limited for transportation reasons and the like. Therefore, the grid-shaped anchor body formed separately from the earth retaining body is fixed by bolts and nuts. The anchor is connected to the anchor part of the earth retaining body using a tool to increase the overall anchor length.

FIG. 14 is a perspective view showing a connection structure 1 of a resin net for civil engineering work disclosed in Japanese Utility Model Publication No. 6-29210. In the connection structure 1, the two resin nets 3, 4 are connected by using an elliptical spiral connection member 2 without using bolts and nuts to connect the two resin nets 3, 4 as reinforcements. Specifically, one resin net 3
The mesh 3a opening in a rectangular shape and the mesh 4a opening in a rectangular shape of the other resin net 4 are aligned, and the two resin nets 3 and 4 are superimposed. The connecting member 2 is inserted through the meshes 3a and 4a from the other, and the rigid connecting rod 5 is inserted into the connecting member 2 protruding to the other side of the overlapping portion of the resin nets 3 and 4, thereby forming the two resin nets 3 and 4. Concatenate.

[0005]

In such prior art, since the earth retaining body and the anchor body are connected by using bolts and nuts, a detailed operation is required for the connecting work. In particular, when constructing a river embankment as described above, or when laying a road or railroad, the slopes must be reinforced over a wide area, requiring a great deal of work, and this increases the construction time. I will.

In the connection structure 1 for a resin net for civil engineering disclosed in Japanese Utility Model Publication No. 6-29210, the connection member 2
Is inferior in stability when placed on the ground because it has an elliptical spiral shape, and when connecting the resin nets 3 and 4, it is necessary to fix the connecting member 2 so that it does not roll. Requires personnel and equipment, resulting in poor work efficiency.

Since the connecting member 2 has an elliptical spiral shape,
The connecting member 2 is a first resin net 3 extending in the longitudinal direction.
The resin nets 3 and 4 are inserted through the resin nets 3 and 4 at an angle with respect to the direction C1, and a force in the first direction C1 acts on one of the resin nets 3 so that the resin nets 3 and 4 move along the first direction C1. When the connecting members 2 are to be separated from each other, not only a bending force but also a tensile force in the axial direction of the wire of the connecting member 2 and a torsional force around the axis act. The connecting member 2 made of a wire is very vulnerable to such a combined force, and in order to withstand such a force, the outer diameter of the wire must be increased. When the diameter is increased, the connecting member 2 becomes large, and the dimensions of the meshes 3a, 4a of the resin nets 3, 4 must also be increased in accordance with the connecting member 2.

The connecting member 2 is connected to the meshes 3a, 4a along the diagonal lines of the meshes 3a, 4a in which the wires are opened in a rectangular shape.
Therefore, it is necessary to increase the dimension of the meshes 3a, 4a in the second direction C2, which is a direction perpendicular to the first direction C1 (sometimes referred to as "the direction in which the connecting rigid bar 5 is inserted"), to some extent. Therefore, for example, the second of the meshes 3a and 4a
When the dimension in the direction C2 is substantially the same as the dimension of the outer diameter of the wire of the connecting member 2, the connecting member 2 is
4 cannot be inserted.

Since the connecting member 2 has a spiral elliptical shape,
In the state where the dimension of the connecting member 2 in the second direction C1 is larger than the outer diameter of the connecting rigid bar 5 inserted into the connecting member 2 and the connecting rigid bar 5 is inserted through the connecting member 2,
The connecting rigid bar 5 is displaced in the first direction C1, and the resin nets 3 and 4 cannot be connected stably. Further, a force in the first direction C1 acts on one of the resin nets 3,
When the resin nets 3 and 4 are to be separated from each other along the first direction C1, the connecting member 2 is compressed in the first direction C1 and a direction perpendicular to the first direction C1 and the second direction C2, That is, the resin nets 3 and 4 are deformed so as to extend in the stacking direction C3, and the connecting rigid bar 5 inserted into the connecting member 2 can be displaced in the stacking direction C3. As a result, the resin nets 3 and 4 cannot be maintained in a stable connected state.

[0010] Accordingly, an object of the present invention is to provide a connecting structure that can be easily connected to a reinforcing member buried in the soil and used for reinforcing a slope.

[0011]

SUMMARY OF THE INVENTION According to the present invention, a vertical member extending in a direction in which earth pressure acts and a horizontal member fixed to cross the vertical member are formed in a lattice shape to receive the earth pressure. A first reinforcing member connected to the retaining wall and buried in the soil,
A vertical member extending in the direction in which the earth pressure acts and a horizontal member fixed to cross the vertical member are formed in a lattice shape, and partially formed with the first reinforcing body in the direction in which the earth pressure acts. A second reinforcing member that is superimposed and buried in the soil, and a plurality of locking members whose bottoms are formed in a substantially U-shape extending in a direction in which the earth pressure acts and are provided at intervals in a direction in which the horizontal member extends. And a connecting portion for connecting each locking portion on the open end side,
A connecting structure for a reinforcing body, comprising: a connecting member provided by inserting each locking portion through the first and second reinforcing members; and a locking member inserted into each locking portion of the connecting member. is there.

According to the present invention, the first reinforcing member formed in a lattice shape by the vertical member and the horizontal member, for example, locks the slope of the embankment and connects to the retaining wall which receives the earth pressure acting on the slope. Buried in the ground, directly or indirectly connected. When the first reinforcing member attempts to displace with respect to the surrounding earth and sand, it receives frictional resistance from the surrounding earth and sand. First
Since the reinforcing body is connected to the earth retaining wall, the first reinforcing body tends to displace integrally with the earth retaining body when the earth retaining wall is to be displaced by receiving the earth pressure. At this time, the frictional resistance applied to the first reinforcing body acts to prevent the retaining wall from being displaced. In the soil in which the first reinforcing member is embedded, a second reinforcing member formed in a lattice shape by the vertical members and the horizontal members is partially overlapped with the first reinforcing member and embedded. This second reinforcing body also receives frictional force from surrounding earth and sand, similarly to the first reinforcing body.

[0013] A plurality of locking portions provided at intervals in the direction in which the respective lateral members of the connecting member extend, the first and second reinforcements from one side of the overlapping portion of the portion where the first and second reinforcements overlap. And a substantially U-shaped bottom portion of each locking portion protrudes to the other side in the stacking direction from the other of the first and second reinforcing members in the stacking direction, and the first and second reinforcing members.
The vertical member of the reinforcing member on one side in the polymerization direction of the reinforcing member abuts on each connecting portion of the connecting member. Since the locking member is inserted in the direction intersecting with each vertical member between the bottom of each protruding locking portion and the vertical member of the reinforcing member on the other side in the stacking direction, the first and second reinforcing members are provided. The first and second reinforcing members are sandwiched between the connecting portion of the connecting member and the locking member so that the first and second reinforcing members are prevented from being relatively displaced in the overlapping direction with respect to the connecting member. Are locked to each other.

Further, the horizontal member of the first reinforcing member abuts the locking portion of the connecting member from the upstream side in the direction in which the earth pressure acts, and the horizontal member of the second reinforcing member presses the locking portion of the connecting member. The horizontal members of the first and second reinforcements abut the locking portion of the connecting member in contact with the downstream side in the acting direction, and displacement of the connecting member along the direction in which earth pressure acts is prevented. .

Accordingly, when the earth retaining wall is subjected to earth pressure and the first reinforcing body tries to be displaced with the earth pressure, the first and second reinforcing bodies are prevented from separating from each other.
Can be linked. Therefore, as described above, the second
The frictional resistance force applied to the reinforcing body acts to prevent the retaining wall from being displaced. In this manner, by connecting the second reinforcing member to the first reinforcing member, a large frictional resistance is applied to the retaining wall, and the slope can be reliably prevented from collapsing.

The first and second reinforcing members are connected by inserting the respective locking portions of the connecting member through the first and second reinforcing members, and connecting the first and second reinforcing members to the vertical portions of the reinforcing members on the other side in the overlapping direction with the locking portions. The first and second reinforcing members can be easily connected by a simple operation without using a fastening member such as a bolt and a nut only by inserting a locking member between the members. Therefore, it is possible to reduce labor on site and shorten construction time. Especially if you need to reinforce the slope over a wide area, such as when building a river embankment or laying a road or railroad,
Construction time can be greatly reduced.

The bottoms of the plurality of locking portions of the connecting member extend in the direction in which the earth pressure acts, and are provided at intervals in the direction in which the horizontal members of the first and second reinforcing members extend. In order to combat the problem, the connecting member can be easily attached to the first and second reinforcing members even if the interval in the extending direction of the horizontal member is reduced by increasing the number of vertical members of the first and second reinforcing members. Can be inserted.

Further, since the bottom of the engaging portion of the connecting member is substantially U-shaped, the connecting member is held when the horizontal members of the first and second reinforcing members sandwich the engaging portion of the connecting member. Since the locking member inserted into the locking portion is clamped by the locking portion of the connecting member, the connecting member can be stably held.

[0019]

FIG. 1 is a sectional view showing a part of an earth retaining structure 10 in which a connecting structure according to an embodiment of the present invention is implemented. FIG. 2 shows the connecting member 30 and the locking member 1.
Earthing body 13 and anchor body 14 connected by 5
FIG. The earth retaining structure 10 is a structure for preventing a slope of an embankment from being collapsed when, for example, constructing a river embankment or laying a road or a railway, and forming a stable slope 11. In addition, a single-layer soil retaining structure 12 is stacked on a field board (not shown). Each single-layer soil retaining structure 12 includes a soil retaining body 13, an anchor body 14, a connecting member 30, a locking member 15, and a back soil 16.

The retaining body 13 includes a retaining wall 17 which is disposed substantially vertically, and an anchor portion 1 which is a first reinforcing member which is connected to a lower end of the retaining wall 17 and is bent substantially vertically and extends substantially horizontally.
8 to form an L-shape. The anchor body 14 serving as the second reinforcing body is provided on the anchor portion 18 of the earth retaining body 13 in a partially overlapping state, and extends substantially horizontally. The connecting member 30 and the locking member 15 are provided in relation to the anchor portion 18 of the earth retaining body 13 and the anchor body 14, and connect the anchor body 14 to the anchor portion 18 of the earth retaining body 13. The back soil 16 is made of, for example, sandy soil, and is buried behind the retaining wall 17 of each retaining body 13 (the right side in FIG. 1) and accommodated. In the state where the single-layer soil retaining structures 12 are stacked, the back soil 16 has a vertical relationship through the grid-like anchor portions 18 and the anchor bodies 14. The anchor portion 18 and the anchor body 14 extend in a direction perpendicular to the retaining wall 17.

In such a state that the single-layer soil retaining structures 12 are stacked, the anchor portion 18 and the anchor body 14 of the soil retaining member 13 which are mutually locked via the locking members 15 are embanked as the back soil 16. The earth retaining wall 17 of the earth retaining body 13 is buried in the soil thus soiled, and locks the slope of the soil 16 behind. The soil retaining structure 10 thus configured is a soil that acts in a first direction A, which is a direction in which the slope is pushed forward by the weight of the back soil 16 or the like (hereinafter, may be referred to as a direction in which earth pressure acts). The pressure is received by the retaining wall 17 of the retaining body 13 and the anchor portion 1 of the retaining body 13 connected to the retaining wall 17.
8 and anchor body 14 connected to anchor portion 18
However, due to the frictional resistance received from the back soil 16, the displacement of the retaining wall 17 in the first direction A is prevented against the earth pressure, and the slope of the back soil 16 is prevented from collapsing. A stable slope 11 can be formed. Here, the earth pressure includes, in addition to the weight of the back soil 16, the water pressure due to groundwater, the pressure due to the load on structures such as roads, railways, and buildings provided on the earth retaining structure 10. In this embodiment, the first direction A is a direction substantially perpendicular to the slope, and by providing the anchor portion 18 and the anchor body 14 along the first direction A, it is possible to efficiently withstand the earth pressure. Can be.

In such an earth retaining structure 10, the earth pressure acting to collapse the slope depends on the properties of the back soil 16,
It depends on the presence or absence of a structure on the earth retaining structure 10, the level of groundwater, and the like. In order to prevent the displacement of the retaining wall 17, the frictional resistance received by the anchor portion 18 and the anchor body 14 is
The length buried in the soil 16 behind the so-called anchor length L1. When the earth pressure acting on the slope is large, the anchor portion 18 and the anchor body 14 of the earth retaining body 13 buried in the back soil 16 resist the earth pressure in order to prevent the earth retaining wall 17 from being displaced forward. Therefore, it is necessary to obtain a large frictional resistance force, and for this purpose, it is necessary to increase the anchor length L1. However, the length L2 of the anchor portion 18 and the length L3 of the anchor body 14 of the earth retaining body 13 are limited in order to enable or facilitate the loading into the site and the construction at the site.

More specifically, a stable slope 11 using only the earth retaining body 13 without using the anchor body 14.
When the earth pressure structure acting on the slope is large when constructing the earth retaining structure 10 capable of forming the ground, it is necessary and sufficient to prevent the earth wall 17 from being displaced forward against the earth pressure. In order to receive a sufficient frictional resistance from the back soil 16, it is necessary to increase the length L2 of the anchor portion 18. However, the length L2 of the anchor portion 18 is limited due to the above-described problems in loading and construction. In order to solve such a problem at the same time, the length L2
Is selected to a length that allows carrying-in and construction, and an anchor body 14 separate from the earth retaining body 13 is connected to the anchor portion 18 to increase the anchor length L1. This anchor part 18
In order to facilitate the connection between the anchor portion 14 and the anchor body 14, the connection structure according to the present invention using the locking member 15 is implemented, and the anchor portion 18 and the anchor body 14 are connected.

The earth retaining body 13 includes a plurality of vertical bars 20 which are vertical members provided at intervals from each other, and a plurality of horizontal bars which are intersecting each vertical bar 20 and provided at intervals from each other. The horizontal streak 21 is fixed by, for example, welding, and is formed in a lattice shape. The vertical streak 20 has an L-shape having a horizontal portion 22 extending along the first direction A, and a rising portion 23 connected to an end of the horizontal portion 22 on the downstream side in the first direction A and rising upward. The horizontal streaks 21 extend in a second direction B which is a direction substantially perpendicular to the first direction A in which the earth pressure acts (hereinafter, also referred to as a direction in which the horizontal streaks extend). The vertical streaks 20 have, for example, nominal diameters of φ6, φ7.5,
A φ9 reinforcing bar is used, and 12 reinforcing bars are provided every 150 mm. For example, a reinforcing bar having a nominal diameter of φ6 or φ7.5 is used for the horizontal bar 21, and 225 for the horizontal portion of the vertical bar 20.
Thirty-one lines are provided above the vertical stripes 20 for every mm, and two lines are provided for the rising portions 23 of the vertical stripes 20 on the upstream side in the first direction A of the vertical lines 20 every 225 mm.

The horizontal portion 22 of the vertical stripe 20 and the horizontal portion 22
The horizontal streak 21 fixed to the anchor portion 18 forms a grid-like anchor portion 18, and the horizontal portion 22 and the rising portion 23 are
The reinforcing bars of the book, that is, the vertical bars 20 are bent to be integrally formed, so that the retaining wall 17 and the anchor portion 18 are integrally connected. The retaining body 13 configured as described above has, for example, a length L of the anchor portion 18.
2 is selected to 6975 mm, and the height H1 of the retaining wall 17 is 4
The width W1 is selected to be 50 mm, and the width W1 is selected to be 1000 mm.

The anchor body 14 includes a plurality of vertical bars 25, which are vertical members provided at intervals from each other, and a plurality of horizontal members, which cross each vertical bar 25 and are provided at intervals from each other. The horizontal streak 26 is fixed by, for example, welding,
It is formed in a lattice shape. The vertical streaks 25 extend along the first direction A, and the horizontal streaks 26 extend substantially perpendicular to the first direction A. The vertical streaks 25 have, for example, a nominal diameter of φ6, φ7.
5, 12 reinforcing bars are used, and 12 reinforcing bars are provided every 150 mm. The horizontal streak 26 has, for example, a nominal diameter of φ6, φ7.
Five reinforcing bars are used, and N bars are provided below the vertical bars 25 every 225 mm. The number N of the horizontal streaks 26 is determined based on the length (L2-ΔL) that must be added to the length L2 of the anchor portion 18 of the retaining body 13 in order to obtain the anchor length L1 required to support the earth pressure. Can be selected as appropriate. Here, ΔL is the anchor portion 18 of the earth retaining body 13.
Is the so-called wrap length in the first direction A when the anchor body 14 and the anchor body 14 are combined, and is, for example, about 300 mm. For example, the length L3 of the anchor body 14 configured as described above is selected to be, for example, 1025 to 6025 mm according to the earth pressure for the above-described reason.

FIG. 3 is a perspective view showing the connecting member 30.
FIG. 4 is a plan view showing the connecting member 30, FIG. 5 is a side view showing the connecting member 30, and FIG. 6 is a cross-sectional view showing the locking portion 31A as viewed from a section line S6-S6 in FIG. FIG. 7 is a cross-sectional view showing the locking portion 31B as viewed from a section line S7-S7 in FIG.

The connecting member 30 has a substantially U-shaped bottom 33 extending in the first direction A.
8 and a plurality of locking portions 31 provided at intervals in the direction in which the horizontal streaks 21 and 26 of the anchor body 14 extend, and a connecting portion 32 that connects each locking portion 31 with an open end 34.

As shown in FIGS. 4 to 7, the engaging portions 31A and 31B of the connecting member 30 are arranged such that the adjacent engaging portions 31A and 31B open one of the engaging portions 31A and 31B. The end 34a is connected via the connecting portion 32. The adjacent locking portions 31B and 31C are each
1B and 31C at the other open end 34b.
2 are connected. As described above, when the locking portion 31B and one adjacent locking portion 31A of the locking portion 31B are connected via the connecting portion 32 at one open end 34a of each of the locking portions 31A and 31B. Are the locking portion 31B and the locking portion 31
B and the other locking portion 31C adjacent to B
B and 31C are connected via the connecting portion 32 at the other open end 34a. Further, when the locking portion 31B and one adjacent locking portion 31A of the locking portion 31B are connected via the connecting portion 32 at the other open end 34a of each of the locking portions 31A and 31B, The stopping portion 31B and the other locking portion 31C adjacent to the locking portion 31B are connected via the connecting portion 32 at one open end 34a of each of the locking portions 31B and 31C. As shown in the plan view of FIG. 4, the connecting member 30 is formed to be substantially S-shaped when projected on an imaginary plane parallel to the installation surface.

As shown in FIG. 1 to FIG.
Are connected to the anchor body 1 from above the connecting portion 32 of the connecting member 30.
4 and the horizontal streak 26a of the anchor body 14 is arranged to contact from the downstream side in the first direction A of the locking portion 31 of the connecting member 30. In addition, earth retaining body 1
The third anchor portion 18 overlaps the anchor body 14 from above the anchor body 14 such that the horizontal streaks 21a of the anchor portion 18 abut on the upstream side in the first direction A of the locking portion 31 of the connecting member 30. The locking portion 31 of the connecting member 30 and the anchor portion 1 that protrude above the anchor portion 18 of the earth retaining body 13
8, the locking member 15 is inserted in a direction intersecting each of the longitudinal stripes 20 and 25, that is, in the second direction B.

As described above, the retaining body 13 and the anchor body 1
4 when the earth pressure acts on the earth retaining wall 17 of the earth retaining body 13, the earth retaining body 13 and the anchor 1
4 tries to displace integrally. By embedding the anchor portion 18 and the anchor body 14 of the earth retaining body 13 in the back soil 16, when the earth retaining wall 17 of the earth retaining body 13 receives earth pressure, the surrounding earth and sand is formed by the anchor portion 18 and the anchor body 14. And the frictional resistance can be applied to prevent the retaining wall 17 from being displaced. By connecting the anchor body 14 to the soil body 13 in this manner, not only the anchor portion 18 of the soil body 13 but also the anchor body 14 receives a frictional resistance force from the back soil 16 and a large frictional resistance force. The large frictional resistance is applied to the retaining wall 17 to reliably prevent the slope from collapsing and to stably reduce the slope 1
1 can be formed.

As shown in FIGS. 1 to 7, the anchor portion 18 of the earthing body 13 and the anchor body 14 of the earthing body 13 overlap with each other from the upper side of the anchor body 14, as shown in FIGS. Alternatively, the anchor body 14 may be polymerized from above the anchor portion 18 of the earth retaining body 13.

FIGS. 8 to 11 are plan views showing steps of an operation for connecting the earth retaining body 13 and the anchor body 14 via the connecting member 30 and the locking member 15, and FIG. FIG. 9 is a plan view showing a second step of the connection operation, FIG. 10 is a plan view showing a third step of the connection operation, and FIG. 11 is a plan view showing the fourth step of the connection operation. FIG. FIG. 12 is a plan view showing a fourth step of the connection operation as viewed from the installation surface side. 8 to 12,
In the anchor portion 18 of the earth retaining body 13, the interval between the vertical streaks 20 is sufficiently larger than the interval between the locking portions 31 of the connecting member 30. In the anchor body 14, the vertical streaks 25 and the horizontal streaks 26 are made of synthetic resin, and the interval between the vertical streaks 25 is slightly larger than the width of the locking portion 31 of the connecting member 30 in the second direction B.

In the first step shown in FIG. 8, the connecting member 30 is set on the installation surface with the open end 34 of the locking portion 31 and the connecting portion 32 with the bottom 33 of the locking portion 31 facing upward. And extend in the second direction B. At this time, since the connecting portions 32 of the connecting member 30 are parallel to each other and are installed in parallel with the installation surface, the connecting member 30 is connected to the installation surface by the open end 34 of the locking portion 31 and the connecting portion 32. Can be installed stably. Subsequently, in a second step shown in FIG. 9, the horizontal streak 21 a of the anchor portion 18 of the earth retaining body 13 is provided.
Are arranged on the upstream side in the first direction A of the connecting member 30, and the vertical stripes 20 of the anchor portion 18 are brought into contact with the respective connecting portions 32 of the connecting member 30, so that the anchor portion 18 of the earth retaining body 13 is connected to the connecting member 30. It is arranged above. Subsequently, in a third step shown in FIG. 10, the horizontal streak 26 a of the anchor body 14 is arranged on the downstream side of the connecting member 30 in the first direction A, and the anchor body 14 is superimposed on the anchor portion 18 of the earth retaining body 13. I do.

Finally, in the fourth step shown in FIG. 11, a long locking member is provided between the bottom 33 of the locking portion 31 projecting above the anchor body 14 and the vertical streak 25 of the anchor body 14. 15 is inserted in the direction intersecting with each of the vertical stripes 20 and 25, that is, in the second direction B. The locking member 15 is, for example, a φ9 reinforcing bar, and one longitudinal end 15a thereof is bent. Thus, one end 1 in the longitudinal direction of the locking member 15
5a, the locking member 15 is moved in the axial direction, that is, in the second direction B during and after construction.
Undesired displacement can be prevented. After the insertion of the locking member 15, the retaining body 13 is pulled to the downstream side in the first direction A and the anchor body 14 is pulled to the upstream side in the first direction A, so that the retaining portion 31 of the connecting member 30 is The horizontal bar 21a of the anchor portion 18 of the body 13 is pressed against the upstream side in the first direction A, and the horizontal bar 26a of the anchor body 14 is pressed against the downstream side in the first direction A. It is pinched in the direction A.

The connection between the earth retaining body 13 and the anchor body 14, more specifically, the connection between the anchor portion 18 of the earth retaining body 13 and the anchor body 14, is performed by connecting the locking part 31 of the connecting member 30 to the anchor part 18 and the anchor part 18. It is only necessary to insert the anchor member 14 into the anchor member 14 and insert the locking member 15 into the locking portion 31, and the earth retaining member 13 and the anchor member 14 can be easily connected by a simple operation and an easy operation. . Therefore, it is possible to reduce labor on site and shorten construction time. Especially if you need to reinforce the slope over a wide area, such as when building a river embankment or laying a road or railroad,
Construction time can be greatly reduced.

The earth retaining body 13 and the anchor body 14 are connected via the connecting member 30 and are buried in the buried soil as the back soil 16, and the slope of the back soil 16 is pushed out to the earth retaining body 13, that is, When the earth pressure in the first direction A is applied, the horizontal streaks 21 a of the anchor portion 18 of the earth retaining body 13 are pressed against the locking portions 31 of the connecting member 30 from the upstream side in the first direction A, and the first direction A Since the horizontal streak 26a of the anchor body 14 is pressed from the downstream side of A, a force acts on the open ends 34a, 34b of the locking portion 31 in a direction in which the open ends 34a, 34b approach each other. The locking portion 31 of the connecting member 30 has a U-shaped bottom 33 extending in the first direction A, and the open ends 34a and 34b of the locking portion 31 are separated from each other. Even if a force acts on the locking portion 31 in a direction in which the open ends 34a and 34b approach each other, the portion through which the locking member 15 is inserted is the anchor portion 1.
Without spreading in the direction of polymerization of 8 and anchor body 14,
Since the inserted locking member 15 is sandwiched by the locking portion 31 of the connecting member 30, the locking member 15 can be stably held, whereby the locking member 15 comes off, and Disconnection with the body 14 can be prevented. At this time, the connecting member 30
Is provided so that the bottom portion 33 of the locking portion 31 extends in the first direction A.
Since each of the open ends 34a and 34b is only a bending force in a direction in which the open ends 34a and 34b approach each other, it is possible to withstand a large earth pressure as compared with a conventional elliptical spiral connection member.

As shown in FIGS. 8 to 12, two grid-like reinforcing members having different vertical streaks, such as a reinforcing bar grid and an anchor made of synthetic resin, are connected to the connecting member 30 and the locking member. The connection can be easily made via the member 15. Further, the interval between the vertical bars may be slightly larger than the width of the locking portion 31 of the connecting member 30 in the second direction B. In order to resist the earth pressure, the anchor portions 18 of the earth retaining body 13 and the vertical bars 20 of the anchor body 14 are required. , 25, the number of vertical streaks 2
Even if the distance between 0 and 25 becomes small, it is possible to easily connect via the connecting member 30.

FIG. 13 is a view showing a process of forming the connecting member 30. As shown in FIG. 13A, the connecting member 30 is, for example, a mild steel wire rod 4 having a nominal diameter of φ4 to 5 mm.
Consists of zero. The mild steel wire rod 40 is bent into a substantially S-shape as shown in FIG. The connecting member 30 as shown in FIG. 13C is formed by bending the U-shaped member so that the central portion 44 protrudes from both ends 42 and 43 in the width direction of the substantially S-shaped member 41. I do.
Thereby, the connecting member 30 can be easily formed only by bending the mild steel wire rod 40.

The above-described embodiment is an example of the present invention, and the material, dimensions, and the like can be changed as appropriate.
As 6, deformed reinforcing bars may be used, and as the transverse bars 21, 26 and the locking member 15, lightweight and highly synthetic materials such as a rectangular cylinder whose cross section perpendicular to the axis is formed by a manufacturing method are used. Alternatively, the strength of the retaining structure 10 may be improved. Further, a plurality of anchor bodies may be connected, whereby the anchor length L1
Can be further lengthened.

Further, in the present embodiment, the anchor portions 18 and the anchor members 14 of the earth retaining body 13 have the longitudinal bars 20, 25 and the horizontal bars 21, 26 called a reinforcing bar grid which are the reinforcing bar anchor portions and the anchor body. A grid-like anchor portion and an anchor body made of resin may be used. Further, the combination of the anchor portion 18 and the anchor body 14 of the earth retaining body 13 may be a combination of reinforcing bars, a pair of synthetic resin anchors, or a combination of a reinforcing grid and a synthetic resin anchor.

In the connecting member 30 of the present embodiment, the bottom portion 33 of the locking portion 31 is formed in a substantially U-shape, but the bottom portion 33 is not limited to the substantially U-shape. The shape may be bent at a right angle. Further, in the connecting member 30 of the present embodiment, as shown in FIGS. 4 to 7, the adjacent locking portions 31A and 31B are connected to the connecting portion 32 at one open end 34a of each of the locking portions 31A and 31B. The locking portions 31B and 31C that are connected via the connecting portion 32 are connected via the connecting portion 32 at the other open end 34b of each of the locking portions 31B and 31C.
May be connected via the connecting portion 32 at each open end 34a, 34b of each locking portion 31. Further, the connecting portion 32 of the connecting member 30 may be a plate-shaped member.

[0043]

According to the first aspect of the present invention, the first reinforcing member formed in a lattice shape by the vertical member and the horizontal member is:
For example, it is directly or indirectly connected to a retaining wall that receives the earth pressure acting on the slope by locking the slope of the embankment,
It is buried in the soil. When the first reinforcing member attempts to displace with respect to the surrounding earth and sand, it receives frictional resistance from the surrounding earth and sand. Since the first reinforcing member is connected to the earth retaining wall, the first reinforcing member tends to be displaced integrally with the earth retaining member when the earth retaining wall is displaced by receiving the earth pressure. At this time, the frictional resistance applied to the first reinforcing body acts to prevent the retaining wall from being displaced. In the soil in which the first reinforcing member is embedded, a second reinforcing member formed in a lattice shape by the vertical members and the horizontal members is partially overlapped with the first reinforcing member and embedded. This second reinforcing body also receives frictional force from surrounding earth and sand, similarly to the first reinforcing body.

A plurality of locking portions provided at intervals in the direction in which the horizontal members of the connecting member extend extend from the first and second reinforcing members from one side of the overlapping portion of the first and second reinforcing members in the overlapping direction. And a substantially U-shaped bottom portion of each locking portion protrudes to the other side in the stacking direction from the other of the first and second reinforcing members in the stacking direction, and the first and second reinforcing members.
The vertical member of the reinforcing member on one side in the polymerization direction of the reinforcing member abuts on each connecting portion of the connecting member. Since the locking member is inserted in the direction intersecting with each vertical member between the bottom of each protruding locking portion and the vertical member of the reinforcing member on the other side in the stacking direction, the first and second reinforcing members are provided. The first and second reinforcing members are sandwiched between the connecting portion of the connecting member and the locking member so that the first and second reinforcing members are prevented from being relatively displaced in the overlapping direction with respect to the connecting member. Are locked to each other.

Further, the horizontal member of the first reinforcing member abuts the locking portion of the connecting member from the upstream side in the direction in which the earth pressure acts, and the horizontal member of the second reinforcing member applies the ground pressure to the locking portion of the connecting member. The horizontal members of the first and second reinforcements abut the locking portion of the connecting member in contact with the downstream side in the acting direction, and displacement of the connecting member along the direction in which earth pressure acts is prevented. .

Accordingly, when the earth retaining wall is subjected to earth pressure and the first reinforcing body is about to be displaced with the earth pressure, the first and second reinforcing bodies are prevented from separating from each other.
Can be linked. Therefore, as described above, the second
The frictional resistance force applied to the reinforcing body acts to prevent the retaining wall from being displaced. In this manner, by connecting the second reinforcing member to the first reinforcing member, a large frictional resistance is applied to the retaining wall, and the slope can be reliably prevented from collapsing.

The first and second reinforcing members are connected by inserting the locking portions of the connecting member through the first and second reinforcing members, and connecting the locking portions with the reinforcing members on the other side in the overlapping direction in the overlapping direction. The first and second reinforcing members can be easily connected by a simple operation without using a fastening member such as a bolt and a nut only by inserting a locking member between the members. Therefore, it is possible to reduce labor on site and shorten construction time. Especially if you need to reinforce the slope over a wide area, such as when building a river embankment or laying a road or railroad,
Construction time can be greatly reduced.

The bottoms of the plurality of locking portions of the connecting member extend in the direction in which the earth pressure acts and are provided at intervals in the direction in which the horizontal members of the first and second reinforcements extend. In order to combat the problem, the connecting member can be easily attached to the first and second reinforcing members even if the interval in the extending direction of the horizontal member is reduced by increasing the number of vertical members of the first and second reinforcing members. Can be inserted.

Further, since the bottom of the engaging portion of the connecting member is substantially U-shaped, the connecting member may be in a state where the horizontal members of the first and second reinforcing members sandwich the engaging portion of the connecting member. Since the locking member inserted into the locking portion is clamped by the locking portion of the connecting member, the connecting member can be stably held.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a part of an earth retaining structure 10 in which a connecting structure according to an embodiment of the present invention is implemented.

FIG. 2 is a simplified perspective view showing an earth retaining body 13 and an anchor body 14 connected by a connecting member 30 and a locking member 15.

FIG. 3 is a perspective view showing a connecting member 30.

FIG. 4 is a plan view showing a connecting member 30.

FIG. 5 is a side view showing the connecting member 30.

FIG. 6 is a cross-sectional view showing the locking portion 31A as viewed from a section line S6-S6 in FIG.

FIG. 7 is a cross-sectional view showing the locking portion 31B as viewed from a section line S7-S7 in FIG.

FIG. 8 is a plan view showing a first step of the connection operation.

FIG. 9 is a plan view showing a second step of the connection operation.

FIG. 10 is a plan view showing a third step of the connection operation.

FIG. 11 is a plan view showing a fourth step of the connection operation.

FIG. 12 is a plan view showing a fourth step of the connection operation as viewed from the installation surface side.

FIG. 13 is a view showing a step of forming a connecting member 30;

FIG. 14 is a perspective view showing a connection structure 1 of a resin net for civil engineering work disclosed in Japanese Utility Model Publication No. 6-29210.

[Explanation of symbols]

 Reference Signs List 14 anchor body 15 locking member 18 anchor portion 20, 25 vertical streak 21, 26 horizontal streak 30 connecting member 31 locking portion 32 connecting portion 33 bottom 34 open end

 ──────────────────────────────────────────────────続 き Continued on front page F-term (reference) 2D044 CA04

Claims (1)

[Claims] 1. A ground member which is formed in a lattice shape by a vertical member extending along a direction in which earth pressure acts and a horizontal member fixed to intersect with the vertical member and which is connected to an earth retaining wall receiving the earth pressure. A first reinforcing member buried in the vertical direction, a vertical member extending in a direction in which the earth pressure acts, and a horizontal member fixed across the vertical member in a lattice shape, and the earth pressure acts thereon. A second reinforcement buried in the soil by being partially overlapped with the first reinforcement in the direction, and a bottom portion is formed in a substantially U-shape extending in a direction in which earth pressure acts, in a direction in which the horizontal member extends. A connection having a plurality of locking portions provided at intervals and a connecting portion connecting the locking portions on the open end side, wherein the connecting portions are provided by passing the locking portions through the first and second reinforcements. A connection structure for a reinforcing body, comprising: a member; and a locking member inserted into each locking portion of the connection member. Build.