JP4887038B2 - Side groove connection structure - Google Patents

Description

  The present invention relates to a connecting structure for a gutter installed at an end of a road.

2. Description of the Related Art Conventionally, a side groove formed by connecting a large number of portal side groove main bodies is known (see Patent Document 1).
Japanese Patent Laid-Open No. 9-78677

Usually, the side grooves are connected to a substantially U-shaped concrete block (corresponding to a gate-type side groove main body) by abutting the end surfaces where the concave grooves are formed. The mortar is filled with the procedure.
<Mortar filling procedure>
Wet the joints with water.
Put a handful of mortar into the joint.
Stick firmly with a stick to harden the mortar.
When it is hardened, remove the stick and put the mortar into the joint again.
Stick firmly with a stick to harden the mortar.
After tamping to the top, flatten the top surface with a finishing iron.

For this reason, it has the following problems.
If the mortar is not surely filled in the joint, a gap is formed, and rainwater and the like flowing through the ditches flow out to the outside. In addition, crops will be adversely affected if rainwater, etc. from the gutter canal flows into fields or fields.
When the mortar filled in the joints changes over time, a gap is formed, and rainwater and the like flowing through the ditches flow out to the outside.
When the mortar filled in the joint is cut off due to vibration or earthquake caused by the vehicle, a gap is formed, and rainwater flowing through the ditches channel flows out to the outside.
Filling the joint with mortar surely takes time and skill.
Curing time is required until the mortar filled in the joint is hardened.
In case of rain, construction is difficult because mortar flows out.
Since the required amount of mortar to be filled is unknown, it is necessary to prepare extra, and the mortar is often left and wasted.

  A first object of the present invention is to provide a side groove connection structure that is easy to construct and excellent in water blocking. A second object of the present invention is to provide a side groove connection structure that is strong against external force (vibration from a vehicle or earthquake) and can be easily repaired.

(About claim 1)
The connection structure of the side grooves is formed by arranging a plurality of concrete blocks having a substantially U-shaped cross section along the side groove water channel on the upper surface of the bottom invert by abutting the end surfaces formed with indented grooves. . The bottom invert is laid on the bottom of the side channel with a concave cross section.

Since the concrete block is installed on the upper surface of the bottom invert by abutting the end surfaces where the concave grooves are formed, a joint portion is formed by a pair of opposing concave grooves.
A rubber rod with a shaft hole having a shaft hole is inserted into the joint. In addition, if a rigid rod is inserted into the shaft hole of the rubber rod and inserted into the joint, it is easy to insert. Further, the tip of the shaft hole of the rubber rod may be open or closed.
Next, a long rigid rod larger in diameter than the shaft hole of the rubber rod is press-fitted into the shaft hole. When a rigid rod is inserted into the shaft hole, the long rigid rod is inserted into the shaft hole after being removed.
By pressing the long rigid rod into the shaft hole, the diameter of the rubber rod is increased, so that the concrete blocks can be connected in a watertight manner.

Since it is only necessary to insert a rubber rod with a shaft hole into the joint and press-fit a long rigid rod into the shaft hole, the construction is easy and has the following advantages.
Does not require skill.
Construction can be done in a short time.
Because it is not filled with mortar, no curing time is required.
Insensitive to the weather.

Since the rubber rod is inserted into the joint portion in a diameter-enlarged state, no gap is formed, and the water stoppage of the connection portion is excellent.
When external force (vibration from the vehicle or earthquake vibration) is applied to the connection part, the rubber of the rubber bar is deformed and held up, so that the connection part is not easily damaged by the external force.
When the tip of the shaft hole of the rubber rod is closed, the long rigid rod stops at the closed position during press-fitting so that collision with the bottom invert can be prevented. Since air escapes from the hole tip, it is easy to press the long rigid rod.

(About claim 2)
A long rigid rod that is press-fitted into a shaft hole of a rubber rod with a shaft hole inserted into a joint portion to expand the diameter of the rubber rod has a tapered tip and a female on the inner wall of the hole drilled in the rear end. Screws are formed.
If the joint part is wide at the time of installation or the joint part is widened due to secular change, etc., if the diameter of the rubber rod is insufficient, the female screw is screwed onto the male screw of the extraction tool that has a male thread. Thus, the long rigid rod press-fitted into the shaft hole can be easily pulled out.
Then, the rubber rod can be greatly expanded in diameter by re-pressing the large rigid rod into the shaft hole of the rubber rod with the shaft hole inserted into the joint.

It is also possible to add the male screw formed on the inner wall of the hole drilled in the rear end of the long rigid rod to the male screw formed on the tip of the rigid rod for extension .

The connecting structure of the side groove is a plurality of concrete blocks (cross section U-shaped) by matching the end faces formed with the concave grooves in two places, on the upper surface of the bottom invert laid on the bottom of the side groove water channel (concave section), Lined up.
Then, a rubber rod with a shaft hole having a shaft hole with a closed end is inserted into a joint formed by a pair of concave grooves facing each other in the concrete block, and a rigid rod is inserted into the shaft hole and inserted. After the rod is pulled out, a long rigid rod having a diameter larger than that of the rubber rod is press-fitted into the shaft hole. Thereby, a rubber stick expands in a joint part.

Since it is only necessary to insert a rubber rod with a shaft hole into the joint and press-fit a long rigid rod into the shaft hole, the construction is easy and has the following advantages.
It can be constructed in a short time and does not require skill in construction. Since it is not filled with mortar, it is not affected by the weather and does not require curing time.
Since a rubber rod with a shaft hole is inserted in the joint portion in an expanded state, no gap is formed, and the water stoppage of the connecting portion is excellent.
Even if an external force (vibration from the vehicle or earthquake vibration) is applied to the connection part, the rubber of the rubber rod with the shaft hole is deformed and held up, so that the connection part is not easily damaged by the external force.

A first embodiment (corresponding to claim 1) of the present invention will be described with reference to FIGS.
The side groove connection structure A was fitted into the bottom invert 2 laid on the bottom 11 of the side groove water channel 1, the concrete block 3 arranged on the top surface of the bottom invert 2 by abutting the end surfaces 30, and the joint 32. A rubber rod 4 is provided.

The side ditch water channel 1 is a groove having a concave cross section for flowing rain water or the like dug at the end of the road.
The bottom invert 2 is composed of a base material 21 laid on the bottom of the gutter channel 1, a leveled concrete 22 constructed on the top surface of the base material 21, a floor mortar 23 laid on the top surface of the leveled concrete 22, and a leveled concrete 22 It consists of invert concrete 24 cast on the upper surface.

The concrete block 3 with reinforcing bars has a portal structure and has a substantially U-shaped cross section.
At two locations on the end face 30 (front end face and rear end face) of the concrete block 3, there are formed concave grooves 33 having a groove cross-section recessed inwardly in a trapezoidal shape. A joint portion 32 having a substantially hexagonal hole cross section is formed by the concave grooves 33 of the end face 30 facing each other.
A lid receiving portion 34 for fitting a lid (not shown) is opened on the upper surface of the concrete block 3.
The rubber rod 4 has a shaft hole 41, and a long rigid rod 43 is press-fitted into the shaft hole 41.

The side groove connection structure A is constructed according to the following procedure.
(1) A base material 21 is laid on the bottom 11 of the gutter water channel 1 along the gutter channel 1. The uniform concrete 22 is laid uniformly on the upper surface of the base material 21 {see (a) of FIG. 2}.

(2) Lay the mortars 23 and 23 in a rail shape with a thickness of about 2 cm {see (b) of Fig. 2}. The floor mortars 23 and 23 also serve as adjustment of the installation height of the concrete block 3.

(3) Lift with a crane or the like, bring the concrete block 3 to a predetermined position according to the water thread, and finely adjust the height and installation position.
A joint portion 32 is formed by the concave grooves 33 and 33 of the opposing end surfaces 30 of the concrete blocks 3 and 3 (see each drawing in FIG. 2C).

(4) The rubber rod 4 in a state in which the rod 42 having a rigidity longer than the shaft hole 41 is inserted to the bottom of the shaft hole 41 is inserted into the joint portion 32 from above (see FIG. 3). Note that a water-swellable lubricant may be applied to the outer peripheral surface of the rubber bar 4 and inserted into the joint portion 32.
The rubber rod 4 has a shape that fits just in the joint portion 32 and has a substantially hexagonal cross section. Further, the shaft hole 41 of the rubber rod 4 is circular (10φ), the rib is set to 4 mm, and the length is set equal to the hole length of the joint portion 32 (see FIG. 4A).

(5) The rubber rod 4 is left in the joint portion 32 and the rod 42 is removed from the shaft hole 41, and then a spacer 43 (long rigid rod) larger in diameter than the shaft hole 41 of the rubber rod 4 is hit with a hammer 44. It press-fits into the shaft hole 41 from above (see FIG. 3). The spacer 43 is a rigid round bar (diameter 14 mm) whose length is equal to the hole length of the shaft hole 41, and a tip portion having a flat surface (diameter 6 mm) is tapered (see FIG. 4). ).
Further, instead of hitting with the hammer 44, the spacer 43 may be pushed into the shaft hole 41 with a hand or a foot. Further, a lubricant may be applied to the spacer 43 and press-fitted into the shaft hole 41 so as to facilitate press-fitting.

(6) The invert concrete 24 is placed on the upper surface of the soaking concrete 22 so as to reach the planned riverbed height from the opening of the lid receiving portion 34 of the concrete block 3.

The side groove connection structure A of Example 1 has the following effects.
Construction is easy because the rubber rod 4 with the shaft hole 41 is inserted into the joint portion 32 and the spacer 43 larger in diameter than the shaft hole 41 is press-fitted into the shaft hole 41 to expand the diameter of the rubber rod 4. It has the following advantages.
Since the spacer 43 may be press-fitted into the shaft hole 41 with the hammer 44, no skill is required.
Curing time (filling mortar → drying) is unnecessary, and construction can be done in a short time.
Because it does not use mortar, it is not affected by the weather.

Since the rubber rod 4 is inserted into the joint portion 32 in a diameter-expanded state, no gap is formed, and the water stoppage of the connection portion is excellent.
Even when an external force (vibration from a vehicle or earthquake shake) is applied to the connection portion, the rubber of the rubber bar 4 is deformed flexibly to respond, so that the connection portion of the concrete block 3 is hardly damaged by the external force .

The present invention includes the following embodiments in addition to the above embodiments .
a. The long rigid rod 81 may have a tapered tip 82 and an internal thread 84 formed on the inner wall of a hole drilled in the rear end 83 (corresponding to claim 2).
When the joint portion is wide at the time of installation or when the joint portion is expanded due to secular change or the like (see FIG. 5 ), when the diameter of the rubber rod 80 is insufficient, the male of the extractor 85 formed with the male screw 86 is used. The long rigid rod 81 press-fitted into the shaft hole 87 can be easily pulled out by screwing the female screw 84 into the screw 86. Then, the rubber rod 80 can be greatly expanded in diameter by re-pressing the large-sized long rigid rod into the shaft hole 87 of the rubber rod 80 with the shaft hole inserted into the joint.

Further, a male screw 92 formed on the inner end of a hole drilled in the rear end portion of the long rigid rod 81 may be screwed into a male screw 92 formed on the distal end portion of the rigid rod 91 for addition to be added. Yes (see FIG. 9 ).

b. The side groove connection structure A of the first embodiment may be changed as shown in FIGS. 6 and 7 (see also FIGS. 1 to 4) (corresponding to claim 1). Thereby, the press-fit resistance of the spacer 43 can be reduced.

The side groove connection structure according to this modification is constructed in the following procedure.
(1) to (3) are performed in the same manner as the side groove connection structure A of the first embodiment.
(4) A spiral rigid pipe 46 having a wrap 45 is inserted into the shaft hole 41 of the rubber rod 4. The rigid pipe 46 is made of resin and has a thickness of 0.5 mm and a wrap length of 15 mm {(a) of FIG. 7 }.
The rubber rod 4 in which the rigid pipe 46 is inserted is inserted into the joint portion 32 from above ((a) of FIG. 6 ). At this time, the rigid pipe 46 may be inserted into the joint portion 32, or a rod may be inserted into the rigid pipe 46 and inserted into the joint portion 32.
The rubber rod 4 has a shape that fits just in the joint portion 32 and has a substantially hexagonal cross section. Further, the shaft hole 41 of the rubber rod 4 is circular (10φ), the rib is set to 4 mm, and the length is set equal to the hole length of the joint portion 32 (see FIG. 6A).

(5) A spacer 43 (long rigid rod) larger in diameter than the shaft hole 41 of the rubber rod 4 is hit with a hammer 44 and pressed into the shaft hole 41 from above (see FIG . 6B).
By press-fitting the spacer 43, the diameter of the rigid pipe 46 is expanded, the wrap 45 is eliminated, the shaft hole 41 is expanded, and the rubber rod 4 is expanded.
The spacer 43 is a rigid round bar (diameter 14 mm) whose length is equal to the hole length of the shaft hole 41, and a tip portion having a flat surface (diameter 6 mm) is tapered.
Instead of hitting with the hammer 44, the spacer 43 may be pushed into the shaft hole 41 with a hand or a foot. Moreover, the protrusion 43a may exist in the outer periphery of the spacer 43 (refer FIG. 8 ).
(6) is performed in the same manner as the side groove connection structure A of the first embodiment.

c. In Claims 1 and 2, the rubber rod with the shaft hole may be a water expansion rubber.

It is explanatory drawing which shows the connection structure of the side groove | channel which concerns on Example 1. FIG. It is process drawing for constructing the connection structure of the side groove which concerns on Example 1. FIG. In Example 1, it is explanatory drawing which shows the place which inserts the rubber stick which inserted the stick | rod in the shaft hole in the joint part, and pulls out a stick | rod, and hits a spacer with a hammer and press-fits into a shaft hole. It is explanatory drawing which shows the structure of the rubber stick used in Example 1, and a spacer. When a joint part spreads, it is explanatory drawing which shows the place which pulls out the elongate rigid stick | rod which formed the internal thread in the rear-end part from the shaft hole of a rubber stick | rod with a removal tool. In a modified example, (a) is an explanatory view showing a step of inserting a rubber rod into which a rigid pipe is inserted into the joint part from above, and (b) is a step of pressing the spacer into the rigid pipe by hitting the spacer with a hammer. It is explanatory drawing shown. It is explanatory drawing which shows the structure of the rubber stick used in a modification, a rigid pipe, and a spacer. It is explanatory drawing which shows the other example of a spacer. It is explanatory drawing which shows the place where the external thread of the rigid rod for extension is screwed together with the internal thread of the rear-end part of a long rigid rod, and is added.

Connection structure of the A gutter
1 side ditch channel 2 bottom invert 3 concrete block 4 rubber bar
1 1 bottom 30 end face 32 joint 33 concave groove 41 shaft hole 43 spacer (long rigid rod)
52 corner joints

Claims (2)

A bottom invert laid at the bottom of the side groove channel having a concave cross section;
A plurality of a plurality of U-shaped concrete blocks arranged in a row on the upper surface of the bottom invert along the side groove channel, butting the end faces formed inwardly recessed grooves,
Insert a rubber rod with a shaft hole into the joint formed by the pair of opposed concave grooves,
A connecting structure for side grooves, wherein a long rigid rod having a diameter larger than that of the shaft hole of the rubber rod is press-fitted into the shaft hole to expand the diameter of the rubber rod. 2. The side groove connecting structure according to claim 1, wherein the long rigid rod has a tapered tip, and a female screw is formed on an inner wall of a hole drilled in the rear end .

Images