JP4563104B2 - Tensile member mounting structure of retaining wall on reinforced earth wall - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension member mounting structure for a retaining wall surface in a reinforced soil wall, and particularly to a tension member mounting structure for a retaining wall surface in a reinforced soil wall that can prevent deformation of the wall material due to settlement of embankment. It is.

  For the reinforced soil wall constructed using embankment with wall material, frame material or sandbag is used as the wall material, and the other end side of the tensile member having one end connected to the wall material is separated from the wall material. Some are constructed by spreading in the direction, putting the embankment on the back side of the wall material and rolling it, and embedding a tensile member in the embankment.

Conventionally, in the structure of a reinforced earth wall, a belt-like member is fixed in a substantially horizontal direction to a slope portion of a wall member made of a net-like member having a slope portion and a bottom portion bent at a predetermined angle. Are connected by a brace member, one end side of the tensile member is connected to the flange formed on the bottom surface portion of the wall surface material, and then the embankment is rolled on the upper surface of the bottom surface portion of the wall surface material and the breath member is embedded in the embankment Then, a first soil layer is formed, and a second and subsequent soil layers are sequentially formed on top of the first soil layer to construct a reinforced soil wall.
Japanese Patent No. 3210745

  By the way, conventionally, in the attachment structure of the tensile member on the reinforced earth wall, as shown in Patent Document 1, one end side of the tensile member is connected to the flange portion formed on the bottom surface portion of the wall surface material, and this tensile member is connected. The other end of the member is extended in a direction away from the wall material and embedded in the embankment.

  However, in this tension member mounting structure, when the embankment of the reinforced earth wall sinks, the force from the tension member that sinks with the embankment directly acts on the wall surface material through the buttock. There was an inconvenience of deforming the wall material.

  In the present invention, one end side of the tensile member is attached to the back side of the wall surface material forming the retaining wall surface by an attachment mechanism, and the other end side of the tensile member is extended in a direction away from the wall surface material. In the tension member mounting structure of the retaining wall surface in the reinforced soil wall in which embankment is thrown into the back side of the wall material and the tensile member is embedded, the wall material is oriented in the lateral direction and is flush A plurality of side wires arranged in parallel so as not to overlap each other on both sides of a plurality of horizontal wires arranged in parallel and fixed in a three-layer welded wire mesh shape, and the mounting mechanism Is an engagement made of a single wire in which a plurality of engagement curved portions that are slidably engaged with the one-side vertical wire positioned on the front surface side of the three-layer wall material are formed between the straight portions. A wire and a single wire rod are wound into an oval shape, and a plurality of mounting bends are placed on one side in the longitudinal direction. A fitting that is formed in parallel at an interval and a plurality of connecting curved portions formed in parallel at a predetermined interval on the other side in the major axis direction, and a plurality of connecting curved portions that are arranged in parallel at a predetermined interval of the fitting are inserted. A connecting member made of a single wire, and a mounting bent portion of the mounting member constituting the mounting mechanism is projected from the back side to the front side of the wall surface material, and the engaging tool is projected to the protruding mounting curved portion. And the engagement curved portion is engaged with the one-side vertical wire positioned on the front side of the wall material of the three-layer structure, and the attachment curved portion is engaged with the linear portion, and protrudes to the back side of the wall surface material. One end side of the tensile member is locked to the connecting bent portion, and the tensile member is attached by inserting the connecting tool into the connecting bent portion where the one end side of the tensile member is locked. To do.

The tensile member mounting structure according to the present invention has an engagement curved portion that is a straight line as an attachment mechanism for attaching a tensile member to a wall material formed in a three-layer welded wire mesh shape by welding horizontal wires and side-standing wires. An engagement tool formed between the parts, a mounting curved part, a mounting tool that forms a coupling curved part, and a coupling tool are provided, and the mounting curved part of the mounting tool constituting the mounting mechanism protrudes from the back side to the front side of the wall surface material. The engaging tool is inserted into the protruding mounting curved portion, the engaging curved portion is engaged with the one-side vertical wire located on the front side of the wall surface material, and the mounting curved portion is engaged with the linear portion, One end side of the tensile member is locked to the connecting curved portion protruding to the back side of the wall surface material, and the connecting member is inserted into the connecting curved portion where the one end side of the tensile member is locked and the tensile member is attached. .
As a result, when the embankment of the reinforcing earth wall sinks, the tension member mounting structure is engaged when the force of the tension member that sinks with the embankment acts on the engaging tool of the fixture via the connector. Since the joint slides downward along the one-side vertical wire positioned on the front side of the wall material, the force to act on the wall material can be released. It is possible to avoid a force exceeding the design from acting on the material, prevent deformation of the wall surface material, and simplify the connecting operation of the tensile members.

The present invention provides a three-layer welded wire mesh in order to prevent a force beyond the design from acting on the wall surface material due to the settlement of the embankment of the reinforcing earth wall in the tension member mounting structure of the retaining wall surface in the reinforcing earth wall This is realized by slidably providing the engagement tool of the attachment mechanism along the one-side vertical wire positioned on the front side of the wall surface material formed in the shape.
Embodiments of the present invention will be described below with reference to the drawings.

  1 to 9 show an embodiment of the present invention. In FIG. 9, 2 is the ground, 4 is the foundation, 6 is the support material, 8 is the wall material, 10 is the retaining wall surface, 12 is the attachment mechanism, 14 is the tensile member, 16 is the anchor, 18 is the vegetation sheet, 20 is Embankment 22 is a reinforced earth wall.

  When constructing the reinforced earth wall 22, the wall surface material 8 supported by the support material 6 on the foundation 4 of the ground 2 is sequentially joined upward to form the retaining wall surface 10, and this retaining wall surface 10 is formed. One end side of the tensile member 14 is attached to the back side of the wall member 8 to be attached by the attachment mechanism 12, and the other end side of the tensile member 14 is extended in a direction away from the wall member 8, and is grounded by the anchor 16. Secure to. A plurality of soil layers L 1, L 2, L 3... Are sequentially formed by spreading a vegetation sheet 18 on the back side of the wall material 8, inserting and compressing the embankment 20, and embedding the tensile member 14 in the embankment 20. To construct the reinforced earth wall 22.

  As shown in FIG. 3, the mounting structure of the tensile member 14 of the retaining wall surface 10 on the reinforcing earth wall 22 is formed by forming the wall surface material 8 in a lattice-shaped welded wire mesh shape. The wall surface material 8 is fixed to a plurality of lateral wire members 26 and 28 which are oriented in the vertical direction and are arranged in parallel so as not to overlap each other on both sides of the plurality of horizontal wire materials 24 which are oriented in the horizontal direction and arranged in the same plane. And it forms and provides in the shape of the welded wire mesh of the 3 layer structure which formed the space 30 between the horizontal wire 24 and each side vertical wire 26 * 28. As shown in FIG. 8, each side vertical wire member 26, 28 is provided with each side vertical wire member engaging portion 26a, 28a formed at the upper end and each side vertical wire member engaging portion 26b, 28b formed at the lower end. Provided.

  As shown in FIGS. 4 and 5, the tensile member 14 is made of a flexible plate-like material such as polyolefin resin, and is formed by arranging a plurality of long holes 32 in a plurality of rows and stages. A plurality of long band portions 34 are formed between the widths of the long holes 32 adjacent to each other in the direction, and a plurality of short band portions 36 are provided between the lengths of the long holes 32 adjacent to each other in the step direction. It is formed and provided.

  The attachment mechanism 12 is for connecting the tensile member 14 to the back side of the wall surface material 8, and is provided with an engagement tool 38, a fixture 40, and a connection tool 42 as shown in FIG.

  As shown in FIG. 7, the engaging tool 38 includes a plurality of engaging curved portions 44 that are slidably engaged with the one-side vertical wire member 26 located on the front surface side of the wall material 8 having a three-layer structure. It consists of one wire formed between 46. As shown in FIG. 6, the fixture 40 is formed by winding a single wire rod into an oval shape and forming a plurality of mounting bend portions 48 in parallel at predetermined intervals on one side of the oval shape in the major axis direction. In addition, a plurality of connecting curved portions 50 are formed in parallel at a predetermined interval on the other side in the major axis direction, and a straight portion 52 connecting the mounting curved portion 48 and the connecting curved portion 50 is formed on both sides of the ellipse in the minor axis direction. Provided. As shown in FIG. 5, the connecting tool 42 is made of a single wire inserted through a plurality of connecting curved portions 50 arranged in parallel at a predetermined interval of the fixture 40.

  As shown in FIG. 3, the attachment structure of the tensile member 14 is such that the attachment bent portion 48 of the fixture 40 constituting the attachment mechanism 12 protrudes from the back side to the front side of the wall surface material 8, and the protruding attachment bent portion is provided. 48, the engagement tool 38 is inserted, and the engagement curved portion 44 is slidably engaged with the one-side vertical wire member 26 located on the front side of the wall material 8 having the three-layer structure, and is attached to the linear portion 46. 48 is engaged. As shown in FIG. 4, the long band portion 34 on one end side of the tensile member 14 is bent and the long hole 32 is inserted into the connecting curved portion 50 of the fixture 40 protruding to the back side of the wall material 8. 1 and FIG. 2, the attachment mechanism 12 is attached to the back side of the wall surface material 8 by inserting the connecting tool 42 into the connecting bent portion 50 in which one end side of the tensile member 14 is locked. The tensile member 14 is attached by

  Thereby, when the embankment 20 of the reinforced earth wall 22 sinks, the attachment structure 38 of this attachment member 14 of the attachment mechanism 12 which connected the tension member 14 which sinks with this embankment 20 is one. It becomes possible to slide downward along the side vertical line material 26, and the force to act on the wall surface material 8 can be released.

  Next, the operation of this embodiment will be described.

  When constructing the reinforced earth wall 22, as shown in FIG. 9, the wall surface material 8 is supported by the support material 6 on the foundation 4 recessed in the ground 2 and arranged side by side in the horizontal direction. The embankment 20 is thrown into the intermediate portion of the wall material 8 that has been formed and installed in the vertical direction, and is buried.

  As shown in FIG. 3, the wall surface material 8 installed on the foundation 4 is provided with a mounting bent portion 48 of the fixture 40 in the space 30 between the horizontal wire material 24 and the vertical wire materials 26 and 28 from the back side of the wall material 8. Inserted and protruded to the front surface side, the engaging tool 38 is inserted through the protruding mounting curved portion 48, and the engaging curved portion 44 is positioned on the front side of the wall material 8 having a three-layer structure. 26 is slidably engaged, and the mounting curved portion 48 is engaged with the straight portion 46.

  As shown in FIG. 4, the long band portion 34 on one end side of the tensile member 14 is bent and the long hole 32 is inserted into the connecting curved portion 50 of the fixture 40 protruding to the back side of the wall material 8. 1 and FIG. 2, the attachment mechanism 12 is attached to the back side of the wall surface material 8 by inserting the connecting tool 42 into the connecting bent portion 50 in which one end side of the tensile member 14 is locked. The one end side of the tensile member 14 is attached by this. The other end side of the tensile member 14 is expanded in a direction away from the wall surface material 8 and fixed to the ground 2 by the anchor 16.

  The upper wall material 8 is engaged with the lowermost wall material 8 positioned below. That is, as shown in FIG. 8, the lower wall material 8 and the upper wall material are formed by connecting the vertical wire engaging portions 26a and 28a at the upper ends of the vertical wall materials 26 and 28 of the lower wall material 8 to the upper wall surface. While engaging with the horizontal wire 24 at the lower part of the material 8, the side vertical wire engaging parts 26 b and 28 b at the lower ends of the respective side vertical wires 26 and 28 of the upper wall material 8 are used as the horizontal wire 24 at the upper part of the lower wall material 8. The retaining wall surface 10 is formed by engagement.

  A vegetation sheet 18 is laid out on the back side of the lower wall material 8 and the upper wall material 8, and the embankment 20 is thrown into the vertical intermediate portion of the upper wall material 8 to roll the tensile member 14. By embedding in 20, the first soil layer L1 is constructed.

  Next, one end side of the tensile member 14 is attached to the back side of the wall surface material 8 forming the retaining wall surface 10 of the first soil layer L1 by the attachment mechanism 12, and the other end side of the tensile member 14 is provided. It extends in the direction away from the wall material 8 and is fixed to the ground 2 by the anchor 16, the vegetation sheet 18 is installed on the back side of the wall material 8, the embankment 20 is charged and rolled, and the tensile member 14 is placed in the embankment 20. The second soil layer L2 is constructed by burying in the soil.

  After that, by constructing the third soil layer L3 on the second soil layer L2, and further constructing up to the uppermost soil layer Ln, a plurality of soil layers L1, L2, L3. Thus, the reinforced earth wall 22 is constructed.

  In the reinforcing earth wall 22 of this embodiment, as shown in FIG. 8, one end side of the support member 54 is attached to the back side of the horizontal wire 24 of the wall surface material 8 forming the retaining wall surface 10, and this support is provided. The other end side of the member 54 extends obliquely downward away from the wall surface material 8 and is fixed to the ground 2 by the anchor 16.

  In the mounting structure of the tensile member 14 on the reinforcing earth wall 10, when the embankment 20 of the reinforcing earth wall 10 sinks, the force of the tensile member 14 that sinks together with the embankment 20 is connected via the connecting tool 42. When acting on the 40 engaging tools 38, the engaging bent portion 44 of the engaging tool 38 slides downward along the one-side vertical wire 26 positioned on the front side of the wall surface material 8 as indicated by the arrow M in FIG. Therefore, the force that acts on the wall surface material 8 can be released.

  For this reason, the attachment structure of this tensile member 14 can avoid that the force beyond a design acts on the wall surface material 8 by the sinking of the embankment 20 of the reinforcement earth wall 10, and prevents the deformation of the wall surface material 8. In addition, the connecting work of the tensile member 14 can be simplified.

  In addition, the fixture 40 is formed with a plurality of attachment curved portions 48 arranged in parallel at a predetermined interval on one side in the major axis direction of one wire wound in an oval shape, and a plurality of connecting curves on the other side in the major axis direction. Since the portions 50 are formed in parallel at predetermined intervals, the manufacture can be facilitated, and the configuration can be simplified and the cost can be reduced.

  The present invention is not limited to the above-described embodiments, and various application modifications can be made. For example, in the attachment structure of the tensile member 14 shown in FIG. 10, a bent portion 56 that is bent back is connected to a straight portion 52 that connects the attachment bent portion 48 and the connecting bent portion 50 of the attachment 40 constituting the attachment mechanism 12. It is formed and provided.

  When the embankment 20 of the reinforcing earth wall 10 sinks, the attachment structure of the tension member 14 is attached when the force of the tension member 14 that sinks with the embankment 20 acts on the attachment 40 via the connector 42. Since the bent portion 56 formed in the straight portion 52 that connects the bent portion 48 and the connecting bent portion 50 is extended, the force that acts on the wall surface material 8 through the engaging tool 38 can be released.

  For this reason, the attachment structure of this tensile member 14 can avoid that the force beyond a design acts on the wall surface material 8 by the sinking of the embankment 20 of the reinforcement earth wall 10, and prevents the deformation of the wall surface material 8. In addition, the connecting work of the tensile member 14 can be simplified.

  The tension member mounting structure of the retaining wall surface in the reinforced soil wall according to the present invention is a three-layer welded wire mesh shape in order to prevent the force beyond the design from acting on the wall material due to the settlement of the embankment of the reinforced soil wall. The mounting mechanism is slidably provided along the one side vertical wire located on the front side of the wall material formed on the wall material. The combination can be applied not only to wall materials but also to the connection of other objects.

It is a principal part top view of the state which connected the tensile member to the wall surface material which shows an Example with an attachment mechanism. It is a principal part side view of the state which connected the tensile member to the wall surface material with the attachment mechanism. It is a partially-omission perspective view of the state which engaged the fixture with the wall surface material with the engaging tool. It is a partially-omission perspective view of the state which connected the tension member to the fixture with the connector. It is the top view which decomposed | disassembled when attaching a tensile member to a wall surface material with an attachment mechanism. (A) is a side view of the fixture, and (B) is a plan view of the fixture. It is a top view of an engaging tool. It is an expanded sectional view showing details of a reinforced earth wall. It is sectional drawing of a reinforced earth wall. It is a principal part top view of the state which connected the tensile member to the wall surface material which shows a modification with an attachment mechanism.

Explanation of symbols

2 Ground 8 Wall Material 10 Retaining Wall Wall 12 Mounting Mechanism 14 Tensile Member 20 Filling 22 Reinforced Earth Wall 24 Horizontal Wire 26 One Side Vertical Wire 28 Other Side Vertical Wire 30 Space 32 Long Hole 34 Long Band 36 Short Band 38 Compounding tool 40 Mounting tool 42 Connecting tool 44 Engagement curve part 46 Straight line part 48 Mounting curve part 50 Connection curve part 52 Straight line part

Claims (1)

  One end side of the tensile member is attached to the back side of the wall surface material forming the retaining wall surface by an attachment mechanism, and the other end side of the tensile member is extended in a direction away from the wall surface material. In the tension member mounting structure of the retaining wall surface in the reinforced soil wall in which embankment is thrown into the back side of the material and the tensile member is embedded, the wall surface material is oriented in the lateral direction and arranged in parallel in the same plane A plurality of side wires arranged in parallel so as not to overlap each other in the vertical direction are fixed to both sides of the plurality of horizontal wires, and formed into a three-layer welded wire mesh shape. An engagement tool made of a single wire formed by forming a plurality of engagement curved portions between the straight portions, each of which is slidably engaged with a one-side vertical wire positioned on the front side of the wall material of the layer structure; A wire rod is wound into an oval shape, and a plurality of mounting curved portions are arranged in parallel at a predetermined interval on one side in the major axis direction. And a fixture that is formed in parallel with a predetermined interval on the other side in the major axis direction, and one wire rod that is inserted through the plurality of connected bent portions that are arranged in parallel at a predetermined interval of the fixture. And a fitting curved portion of the fixture constituting the mounting mechanism is projected from the back side to the front side of the wall surface material, and the engaging tool is inserted through the projected mounting curved portion. A connecting curve projecting to the back side of the wall surface material by engaging the engagement curve portion with the one side vertical wire positioned on the front side of the wall material of the three-layer structure and engaging the mounting curve portion with the linear portion. A reinforcing earth wall in which one end side of the tensile member is locked to a portion, and the tensile member is attached by inserting the connecting member into a connecting curved portion where the one end side of the tensile member is locked The tension member mounting structure of the retaining wall surface in FIG.

Images