JP6492240B2 - Connection structure, connection structure and connection method - Google Patents

Description

  The present invention relates to a connecting structure, a connecting structure, and a connecting method for connecting various connected bodies such as a covering block used in a harbor / fishing port, a seawall block used in a river, and a concrete pipe.

  In harbors and rivers, in order to prevent erosion of coasts, riverbanks, work pieces, etc. due to waves or water currents, maintenance is carried out to cover them with concrete blocks. However, in the case of the Great East Japan Earthquake, the tsunami locally moved the covering block covering the rubble mound, which is the foundation of the breakwater, and the exposed portion was scoured, causing the breakwater to collapse, There were many disasters where the covering blocks were scattered and the exposed parts were scoured, resulting in bank breaks. Also, in recent years, due to the heavy rain accompanying global warming, there are increasing disasters where rivers are flooded and the dike slope cover blocks are moved, or the slope is scraped and destroyed by overflow.

  In order to mitigate such disasters, the blocks are connected to each other instead of the conventional method that relies on the frictional resistance of the individual blocks against the action of waves and water flow, and the local movement of the blocks causes the destruction of the entire structure. It is important not to lead to.

  Japanese Patent Laid-Open No. 2002-146749 proposes an invention relating to a connecting block capable of connecting each block with a wire rope and a block connecting body for slope protection, as covering the slope and the like so far. (Patent Document 1).

JP 2002-146749 A

  However, in the conventional method including the invention described in Patent Document 1, the individual side surfaces are brought into close contact with each through hole of each adjacent block through a wire rope and connected. Special skills that require a great deal of labor and time are required, and recently there has been a shortage of engineers.

  The present invention has been made to solve such problems, and provides a connection structure, a connection structure, and a connection method capable of easily and firmly connecting the connected objects. It is aimed.

  The connection structure according to the present invention is a connection structure in which connected bodies are connected to each other by a connecting bracket in order to solve the problem of firmly connecting the connected bodies to each other. A connecting arm that spans between the gaps provided near the adjacent ends of the connecting body, a pair of hanging arms that are suspended from both ends of the connecting arm and inserted into each of the gaps, and A pair of locking pieces projecting laterally from the respective lower end portions of the hanging arm and locked in the gap, and each of the pair of gaps connected by the connecting metal fittings A vertical hole for insertion into which the stop piece and the hanging arm can be inserted, and the vertical hole that is communicated in the same direction from each of the vertical holes for insertion and has a width smaller than the protruding width of the locking piece. Slide arm A slide vertical hole that is movable, and is formed along a lower end of the slide vertical hole and communicates with the slide vertical hole and the insertion vertical hole. And a locking lateral hole formed so as to be capable of locking the locking piece.

  Further, as one aspect of the present invention, in order to solve the problem of fastening the locking piece to the terminal end side of the locking horizontal hole, the sliding direction of the hanging arm out of the bottom surface of the locking horizontal hole The end portion along the line may be formed at a position below the start end portion.

  Furthermore, as one aspect of the present invention, the connection fitting may be coated with a resin material in order to solve the problem of preventing corrosion of the connection fitting and improving the frictional force with the gap.

  Further, as one aspect of the present invention, in order to solve the problem of preventing the sliding movement of the connection fitting inserted into the gap, the suspended arm is slid in the terminal direction of the sliding vertical hole The stopper may be inserted into the insertion vertical hole to prevent the connecting fitting from returning to the starting end direction.

  The connection structure according to the present invention is configured by connecting a plurality of connected bodies by the connection structure in order to solve the problem of firmly connecting the connected bodies.

  In order to solve the problem of firmly connecting the connected bodies, the connecting method according to the present invention includes a connected body arranging step of arranging a plurality of the connected bodies side by side, and the connected bodies adjacent to each other. A connection fitting insertion step of inserting the locking piece of the connection fitting and the hanging arm into each insertion vertical hole, and the hanging arm of the connection fitting along the sliding vertical hole and the locking horizontal hole. And a coupling fitting locking step for slidingly locking the locking piece.

  According to the present invention, the connected bodies can be easily and firmly connected to each other.

It is a partial cross section perspective view showing one embodiment of the connection structure concerning the present invention. It is a top view which shows an example of the connection structure using the connection structure of this embodiment. It is a side view which shows the use condition of the connection structure using the connection structure of this embodiment. It is a partial cross section front view which shows the consolidation block in a breakwater as other embodiment of the connection structure which concerns on this invention. FIG. 5 is a plan view showing a root block shown in FIG. 4. It is a perspective view which shows the connection metal fitting in this embodiment. It is a perspective view which shows other embodiment of the connection structure which concerns on this invention. It is a perspective view which shows other embodiment of the coupling metal fitting in this embodiment. It is a top view which shows other embodiment of the connection structure using the connection structure which concerns on this invention. It is a longitudinal cross-sectional front view which shows the horizontal hole for latching which has only the level | step difference which makes a termination | terminus part one step lower than a start end part as other embodiment of the connection structure which concerns on this invention. It is a longitudinal cross-section front view which shows the horizontal hole for latching which has only a downward inclination toward the terminal part from the start end part as other embodiment of the connection structure which concerns on this invention. It is a perspective view which shows the stopper member in this embodiment. It is a flowchart which shows the connection construction method of this embodiment. The top view and longitudinal section which show (a) to-be-connected body arrangement | positioning step in the connection construction method of this embodiment, (b) Connecting metal fitting insertion step, (c) Connecting metal fitting locking step, and (d) Stopper member insertion step FIG. It is a top view which shows the state which connected the to-be-connected bodies arrange | positioned shifted | deviated in the connection structure of this embodiment.

  Hereinafter, an embodiment of a connecting structure, a connecting structure, and a connecting method according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the connection structure 1 of the present embodiment is a structure formed by connecting a body to be connected 2 with a connection fitting 3. Further, as shown in FIG. 2, the connecting structure 10 is configured by connecting a plurality of connected bodies 2 by the connecting structure 1. Here, the to-be-connected body 2 means the whole thing connected continuously. In this embodiment, as shown in FIG. 2 and FIG. 3, as a connected body 2, a covering block formed in a substantially square plate shape covering a foundation rubble 7 that serves as a foundation of a breakwater (caisson) 6 in a harbor / fishing port However, the present invention is not limited to this, and other shapes such as a rectangular shape and a hexagonal shape (not shown) may be used. Moreover, as the to-be-connected body 2, in addition to the covering block used in a harbor and a fishing port, when installing a seawall block used in a river or a breakwater (caisson) 6 as shown in FIGS. Examples thereof include a root hardening block 8 to be arranged, a concrete pipe used for drainage (not shown), and the like.

  The connection structure 1 is mainly composed of a connection fitting 3 for connecting the connected bodies 2 to each other and each gap 4 provided in the vicinity of the adjacent end portions of the connected bodies 2. Moreover, in this embodiment, the stopper member 5 which prevents the movement to the return direction of the connected metal fitting 3 is provided. Hereinafter, each configuration will be described in detail.

  The connecting fitting 3 is provided to connect the two to be connected in the gap 4 between the connected bodies 2, and as shown in FIG. 6, a connecting arm 31, a pair of hanging arms 32, 32, and a pair of It has the locking pieces 33,33.

  The connecting arm 31 is a rod-like member that is spanned between the gaps 4 provided in the vicinity of adjacent ends of the connected body 2 and is formed of a rod having a substantially circular cross section in the present embodiment. However, the cross section may be substantially polygonal. The length of the connecting arm 31 has a length that matches the interval between the gaps 4 of the adjacent connected bodies 2.

  The hanging arm 32 is for being inserted into the gap 4 and is suspended from both ends of the connecting arm 31. In the present embodiment, the hanging arm 32 is extended substantially downward at a right angle to the connecting arm 31. ing. Similarly to the connection arm 31, the hanging arm 32 is a bar having a substantially circular cross section, and is formed by extending from both ends of the connection arm 31 and bending downward. The drooping arm 32 is not limited to one formed by bending a bar, but is formed separately from the connecting arm 31 and fixed to both ends of the connecting arm 31 by welding or the like. The connecting arm 31 and the locking piece 33 may be integrally formed by casting or the like.

  The locking piece 33 is formed to protrude laterally from the lower end portion of the hanging arm 32 in order to lock the connecting fitting 3 in the gap 4. The locking piece 33 in the present embodiment is composed of a bar that protrudes outward from the diameter of the hanging arm 32. In the present embodiment, the locking piece 33 projects in a direction orthogonal to the connection arm 31 in plan view, and is configured in a substantially T shape that is upside down with the hanging arm 32.

  The extending direction of the locking piece 33 is not limited to the side perpendicular to the connecting arm 31, and as shown in FIG. 7, according to the shape of the gap 4, It may be projected parallel to the axial direction. Further, the shape of the locking piece 33 is not limited to a rod-like shape, and may be a spherical shape larger than the diameter of the hanging arm 32 as shown in FIG. 8, or may be appropriately selected from other shapes.

  In addition, the connection fitting 3 in this embodiment is covered with a resin material in order to prevent corrosion and improve the frictional resistance with the gap 4. In the present embodiment, polyethylene (PE) resin, polyvinyl chloride (PVC), fluororesin, etc. used as a coating material for submarine cables are coated. In addition, the resin material which coat | covers the connection metal fitting 3 is not specifically limited, You may select suitably from rubber | gum, silicon, etc. which have waterproofness. For the purpose of preventing corrosion, the connecting fitting 3 may be formed of a material having high corrosion resistance such as stainless steel or aluminum. For the purpose of preventing damage due to corrosion, the connecting fitting 3 is made of a resin material or the like. The thickness may be increased without covering with. Further, for the purpose of improving the frictional resistance, fine irregularities may be formed on the surface of the connection fitting 3.

  Next, the gap 4 in the connection structure 1 will be described. The gap 4 is a hole for connecting the body 2 to be connected by the connecting fitting 3, and as shown in FIG. 1, an insertion vertical hole 41, a sliding vertical hole 42, and a locking horizontal hole 43. Consists of In the method for forming the gap 4, the box 2 having the shape of the gap 4 is arranged together with the connected body 2 when the connected body 2 is manufactured.

  The insertion vertical hole 41 is a hole for inserting the locking piece 33 and the hanging arm 32 of the connection fitting 3, and in the present embodiment, the upper part thereof has a substantially rectangular shape along the edge of the connected body 2. It is open. The insertion vertical hole 41 has an upper opening larger than the locking piece 33 to the extent that the locking piece 33 is loosely fitted to facilitate insertion of the locking piece 33 from the opening. Yes. Further, the inner side surface of the insertion vertical hole 41 is narrowly inclined from the opening toward the bottom surface in order to guide the inserted locking piece 33 to the center position of the bottom surface.

  Next, the sliding vertical hole 42 is a hole for sliding the lateral arm 32 inserted in the insertion vertical hole 41 in the lateral direction, and communicates laterally from the bottom surface of the insertion vertical hole 41. It is formed to be. In the present embodiment, the insertion vertical hole 41 communicates in a substantially vertical direction, and an upper portion thereof is opened together with the insertion vertical hole 41 so as to be substantially T-shaped in plan view. The width of the sliding vertical hole 42 is smaller than the overhanging width of the locking piece 33 in order to lock the locking piece 33 so that the locking piece 33 does not come off.

  Further, the slide vertical holes 42 in the gaps 4 of the adjacent coupled bodies 2 adjacent to each other are slidable in the same direction in the pair of hanging arms 32, 32, so that the insertion vertical holes 41 are directed in the same direction. It is communicated. In the present embodiment, as shown in FIG. 1, the sliding vertical hole 42 of one gap 4 is communicated from the end side of the connected body 2 toward the center direction, and the sliding vertical hole 42 of the other gap 4 is connected. The hole 42 communicates from the center side of the coupled body 2 toward the end side.

  Note that the direction of the slide vertical hole 42 communicating from the insertion vertical hole 41 is not limited to the direction along the line connecting the end side and the center direction. For example, as shown in FIG. It may be a direction along the side, and may be appropriately selected in consideration of ease of manufacture. Moreover, in this embodiment, in each to-be-connected body 2, as shown in FIG. 2, the vertical slide holes 42 near the opposite end sides are in the same direction (leftward or leftward in FIG. 2) from the vertical insertion hole 41. However, the present invention is not limited to this, and may be formed in the opposite direction as shown in FIGS. 5 and 9 in order to increase the coupling force.

  The locking horizontal hole 43 is a hole for locking the locking piece 33 slid and moved below the sliding vertical hole 42, and the insertion vertical hole 41 extends along the lower end of the sliding vertical hole 42. The sliding vertical hole 42 communicates in the same direction as the communicating direction from the bottom. The width of the locking lateral hole 43 is larger than the protruding width of the locking piece 33 so that the locking piece 33 can slide.

  In addition, the locking horizontal hole 43 keeps the locking piece 33 slid in the terminal direction at the terminal position by the weight of the connection fitting 3. The terminal part along the sliding direction of the hanging arm 32 is formed at a position below the starting end part. In the present embodiment, as shown in FIGS. 1 and 14, the bottom surface of the locking horizontal hole 43 is formed so as to be inclined downward from the start end portion toward the end portion, and the end portion is further lowered by one step. Has a step.

  In addition, the bottom surface of the locking horizontal hole 43 is not limited to a step having a step with an inclination, and for example, as shown in FIG. 10, has only a step that makes the end portion one step lower than the starting end portion. The end portion may be formed at a position lower than the start end portion. As shown in FIG. 11, the end portion is formed at a position lower than the start end portion by having only a downward slope. Also good.

  The stopper member 5 is for preventing the connecting metal fitting 3 from sliding in the return direction. The stopper member 5 is inserted into one insertion vertical hole 41 in a state where the hanging arm 32 is slid into the sliding vertical hole 42. It is formed in the shape to be. As shown in FIGS. 1 and 12, the stopper member 5 in the present embodiment is formed in a substantially T shape in plan view so that it can be inserted along the insertion vertical hole 41 and the slide vertical hole 42. And has a height approximately equal to the depth of the insertion vertical hole 41.

  Next, the operation of each component in the connection structure 1 and the connection structure 10 according to this embodiment will be described together with the connection method according to this embodiment.

  First, as shown to FIG. 13 and FIG. 14 (a), the some to-be-connected body 2 is arrange | positioned side by side (to-be-connected body arrangement | positioning step). At this time, as shown in FIG. 2, the respective connected bodies 2 are arranged side by side so that the slide vertical holes 42 of the adjacent gaps 4 face in the same direction through the respective end sides. At this time, in the case where it is arranged on an inclined part such as a slope, in order to make it easy to use the weight of the connecting fitting 3 as will be described later, each slide vertical hole 42 is arranged in the downward direction of the inclined part. It is good to do so.

  Next, as shown in FIG. 13 and FIG. 14 (b), the locking piece 33 and the hanging arm 32 of the connection fitting 3 are inserted into the insertion vertical holes 41 of the connected bodies 2 adjacent to each other (insertion of the connection fitting). Step). Since the connecting arm 31 is formed according to the distance between the adjacent gaps 4, the locking piece 33 and the hanging arm 32 can be inserted into each insertion vertical hole 41.

  Further, since the insertion vertical hole 41 has a large upper opening, the locking piece 33 formed wide can be easily inserted. In addition, as shown in FIG. 15, even when the gaps 4 are arranged so as to be displaced due to unevenness of the installation surface on which the coupled body 2 is installed or due to problems in construction accuracy, the opening is formed large. The locking piece 33 can be inserted by tilting the connecting fitting 3. Then, the locking piece 33 inserted in such a loosely fitted state is guided by the inner side surface of the insertion vertical hole 41 inclined inward, and is arranged at substantially the center of the lower end portion.

  Next, as shown in FIGS. 13 and 14 (c), after inserting the locking piece 33 and the hanging arm 32 into each insertion vertical hole 41, along the sliding vertical hole 42 and the locking horizontal hole 43. Then, the hanging arm 32 and the locking piece 33 are slid and locked (connection fitting locking step). The hanging arm 32 slides along substantially the center of the sliding vertical hole 42, and the locking piece 33 provided at the lower end portion of the hanging arm 32 is similarly moved along the sliding vertical hole 42. Slide in the hole 43. At this time, since the bottom surface of the locking horizontal hole 43 in this embodiment is inclined downward toward the terminal end, it can be easily slid using the weight of the connection fitting 3. When the sliding vertical hole 42 is arranged in the downward direction of the inclined portion, the sliding vertical hole 42 is inserted by inserting the connecting metal fitting 3 into the insertion vertical hole 41, depending on the weight of the connecting metal 3. Slide along 42.

  The connection fitting 3 after being slid to the terminal end side remains on the terminal end side due to its weight and frictional force with the gap 4. In this embodiment, since the connection fitting 3 is covered with a resin material, the frictional force with the gap 4 is strong. In addition, since the end portion is formed at a position lower than the start end portion by an inclination and a step, even if the connecting metal fitting 3 is pushed back by an external force such as a water flow force or a wave force, it slides to the start end side. There is almost no. Further, when the sliding vertical hole 42 is arranged in the downward direction of the inclined portion, the weight of the connecting metal fitting 3 is further firmly held by the inclination of the inclined portion because the weight of the connection fitting 3 is on the terminal end side.

  Finally, as shown in FIG. 13 and FIG. 14 (d), the stopper member 5 is inserted into the insertion vertical hole 41 (stopper member insertion step). In this embodiment, as shown in FIG. 1 and FIG. 14 (d), among the insertion vertical holes 41 connected by the connection fitting 3, one of the insertion vertical holes 41 whose top is open and the slide The substantially T-shaped stopper member 5 is inserted into the vertical hole 42. Thereby, even if the connection fitting 3 receives external forces such as waves and water flow, the stopper member 5 is prevented from coming into contact with the connection fitting 3 and sliding in the return direction.

According to the present embodiment as described above, the following effects can be obtained.
1. Since the to-be-connected body 2 is connected by being locked by the locking piece 33 of the connection fitting 3, even if it receives external force due to waves, water flow or the like, it is extremely difficult to come off and can be firmly connected.
2. Since the gap 4 is formed in a vertical hole shape, the connecting fitting 3 is likely to stay in the gap 4 due to its own weight.
3. The locking piece 33 is slid to the terminal end side of the locking horizontal hole 43 and must be slid in the opposite direction to release the locking state. Since the end portion is disposed below the start end portion and the surface of the connecting metal fitting 3 is covered with the resin material, the frictional force with each hole is increased, so that the locking piece 33 can be easily formed. Does not slide in the return direction, so that the locked state can be held firmly.
4). Since the stopper member 5 is inserted into the insertion vertical hole 41 in a state where the hanging arm 32 is slid to the terminal end of the sliding vertical hole 42, the sliding movement returning in the reverse direction can be completely prevented.
5. Even if the gaps 4 are displaced due to the unevenness of the installation surface on which the coupled body 2 is installed and the problem of construction accuracy during the construction, the opening of the gap 4 is formed so that the locking piece 33 can be loosely fitted. Therefore, the connected bodies 2 can be connected without problems.
6). Even if the position of the coupled body 2 is slightly shifted due to a heavy rain or earthquake after construction, the earth and sand will not be exposed because the inner earth and sand will not be exposed, and the levee will be prevented from breaking. Can do.

  The connection structure, the connection structure, and the connection method according to the present invention are not limited to the above-described embodiment, and can be changed as appropriate. For example, the stopper member insertion step is an optional step.For example, when the end portion is formed with a step that is one step lower than the start end portion and is difficult to move in the return direction, the connecting method is used with the connecting bracket locking step. It may be terminated. In addition, earth and sand may flow into the insertion vertical hole 41 and may act as a stopper. In such a case, the connection method may be terminated with a connection fitting locking step.

  Moreover, although the connection structure 1 in this embodiment is provided one place with respect to each edge, it is not limited to this, As shown in FIG. 5, with respect to the connection structure 10 required. You may provide in two or more places in consideration of intensity | strength etc.

DESCRIPTION OF SYMBOLS 1 Connection structure 2 To-be-connected body 3 Connection metal fittings 4 Space | gap 5 Stopper member 6 Breakwater (caisson)
7 Foundation rubble 8 Root block 10 Connection structure 31 Connection arm 32 Suspension arm 33 Locking piece 41 Vertical hole for insertion 42 Vertical hole for slide 43 Horizontal hole for locking

Claims (6)

It is a connection structure formed by connecting to-be-connected bodies with a connection metal fitting,
The connecting bracket is
A connecting arm that spans between the gaps provided in the vicinity of the adjacent ends of the connected body;
A pair of suspending arms that are suspended from both ends of the connecting arm and inserted into each of the gaps;
While having a pair of locking pieces projecting laterally from each lower end of the hanging arm and locked in the gap,
Each of the pair of gaps connected by the connecting bracket is
An insertion vertical hole into which the locking piece and the hanging arm can be inserted; and
The vertical holes for insertion in the gaps of the connected bodies adjacent to each other are communicated in the same direction and are formed to be narrower than the protruding width of the locking piece, and the hanging arm is slid. A vertical hole for sliding,
The locking piece is formed along the lower end of the sliding vertical hole, communicates with the sliding vertical hole and the insertion vertical hole, and has a width larger than the protruding width of the locking piece. The connecting structure having a locking lateral hole that can be locked.   The connection structure according to claim 1, wherein a terminal portion of the bottom surface of the locking lateral hole along the sliding direction of the hanging arm is formed at a position lower than a starting end portion.   The connection structure according to claim 1 or 2, wherein the connection fitting is covered with a resin material.   A stopper member that is inserted into the insertion vertical hole in a state in which the hanging arm is slid in the terminal direction of the sliding vertical hole and prevents the connecting metal fitting from returning to the starting end direction. Item 4. The connection structure according to any one of Items 3 to 4.   A connection structure in which a plurality of connected bodies are connected by the connection structure according to claim 1. A connecting method using the connecting structure according to any one of claims 1 to 4,
A to-be-connected body arranging step for arranging a plurality of the to-be-connected bodies side by side;
A connection fitting insertion step of inserting the locking piece of the connection fitting and the hanging arm into each insertion vertical hole of the connected body adjacent to each other;
A connecting fitting locking step of sliding and locking the hanging arm and the locking piece of the connecting fitting along the sliding vertical hole and the locking horizontal hole.

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