JPS607435Y2 - Joint structure of U-shaped waterway block - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a joint structure for concrete blocks with a U-shaped cross section used for constructing various irrigation canals and drainage canals, especially a joint structure using socket-type joints. It is related to.

(Conventional technology) In the conventional joint structure using a socket type joint, two U
The blocks for the welt channel are joined by inserting the end of the other block into the U-shaped socket formed at the end of one block, and the water stop at the joint is achieved by the outer peripheral surface of the end of the inserted block. This is done by a standard joint material loaded between the socket and the inner circumferential surface of the socket.

(Problem that the invention aims to solve) However, in this conventional structure, the standard joint material is sandwiched between the outer surface of the end of the block and the inner peripheral surface of the socket, so the weight of the block acts directly on the standard joint material. .

As a result, the standard joint material was compressed excessively and lost its elasticity, creating a gap at the top of the joint, allowing external water to enter the waterway and internal water to leak out.

In addition, since two adjacent blocks are simply fitted together, the joints may become misaligned due to the influence of soil pressure, etc., resulting in water leakage or flooding.

Therefore, the purpose of the present invention is to provide a joint that not only has a large joint strength and can prevent internal water from leaking, but also can accurately prevent external water from entering even if the joint is installed in a place where the external water pressure is extremely high.
It is an object of the present invention to provide a joint structure for a block for a U-welcome channel.

(Means for Solving the Problems) As explained below using the reference numerals in the attached drawings, the joint structure of the U-water channel block of the present invention includes two regular joint materials between two blocks 1, 1. Bolts 13.18 are inserted through the through holes 10, 11 at each end of the connecting plate 5, and the connecting plate 5 is brought into contact with each block 1, 1.
The joint structure is such that a U-shaped socket part 3 is formed at one end of each block 1, and the socket part 3 is formed at the other end 2 of each block from the end surface 2a. A connecting part 5 having a cross-sectional shape matching that of the socket part 3 is provided protrudingly shifted toward the socket part 3 by an amount equivalent to the depth of 3, and a receiving groove is formed in each outer surface of the connecting part 4 and the socket part 3. 7, 7, and embed the inserts 8, 8 into which the bolts 13, 18 are screwed into the bottom surfaces 6, 6 of each receiving groove 7, 7. is provided, a groove portion 17 is provided on the inner end surface 3b of each socket portion 3,
One of the through holes 11 of the communication plate 5 is connected to an elongated hole in the length direction of the block 1, and a stopper 12 is provided protrudingly on the outside of the through hole 11 of the waist communication plate 5, Insert the end 2 of the block 1 into the socket part 3 of the other U welding channel block 1, and fit the communication plate 5 into the receiving groove 7 of the socket part 3 and the receiving groove 7 of the connecting part 4, which communicated with each other. The plate 5 is brought into close contact with the bottom surface 6 of each receiving groove 7 and tightened with the bolts 13 and 18, and the regular joint filler 15 attached to the groove part 17 is pressed firmly against the vertical end surface 2a of the end part 2. The standard joint filler 15 attached to the stepped portion 16 is pressed by the vertical end surface 4a of the connecting portion 4, and the circumferential surface of the eccentric seat plate 14 fitted with the bolt 18 passing through the through hole 11 is pressed against the side surface of the stopper 12. It is brought into contact with the

(Embodiment) In the illustrated embodiment, each insert 8 is fixed to an anchor thread 9 on the main body portion of the block 1, and its front end is exposed to the bottom surface 6 of the receiving groove 7.

A standard joint material 15 such as a rubber seal material is attached to the stepped portion 16 or the groove portion 17 in a factory as necessary.

A through hole 10 at one end of the communication plate 5 is formed into a round hole shape.

When constructing a waterway, the boiler bolt 13 that is screwed into the insert 8 through the through hole 10 is tightened strongly from the beginning, but the bolt 18 that is screwed into another insert 8 through the through hole 11 formed in the elongated hole is initially tightened. It is loosely tightened.

Push one block 1 in its length direction and press the end 2
After pressing the two standard joint materials 15.15 with the vertical end surface 2a of the connecting portion 4 and the vertical end surface 4a of the connecting portion 4, the eccentric seat plate 1
4 is rotated around the bolt 18, and its peripheral surface is brought into contact with the side surface of the stopper 12.

Finally, the bolts 18 are fully tightened to bring the communication plates 5 into close contact with the bottom surfaces 6, 6 of the respective receiving grooves 7, 7.

(Effect of the invention) In the joint structure of the invention, the end 2 of one block 1 is simply
In addition to inserting the end 2 of the block 1 into the socket 3 of the other block 1, as well as inserting the end 2 of the block 1 into the socket 3 of the other block 1,
A connecting portion 4 is provided protrudingly shifted toward the socket portion 3 by an amount equivalent to the depth of the socket portion 3, and receiving grooves 7, 7 are provided on each outer surface of the connecting portion 4 and the socket portion 3, and each Inserts 8, 8 are buried in the bottom surfaces 6, 6 of the receiving grooves 7. By screwing the bolts 13 and 18 inserted into the through holes 10 and 11 at each end of the connecting plate 5 into the inserts 8 and 8, respectively, the connecting plate 5 is brought into close contact with the bottom surfaces 6 and 6 of each receiving groove 7. Eccentric seat plate 14 that is screwed together and fitted with a bolt 18 that passes through the through hole 11
Since the periphery of the bolt 13.1 is in contact with the side surface of the stopper 12, the bolt 13.1 is able to withstand the load acting on the joint.
Not only the clamping force of 8 is resisted, but also the eccentric seat plate 14 and the stopper 12 are resisted.

Therefore, displacement of the blocks and deflection of the block rows due to the influence of earth pressure etc. are accurately prevented, and high joint strength can be obtained.

Furthermore, since the communication plate 5 is fitted into the receiving grooves 7, 7, and its movement is prevented by the inner wall surface of each receiving groove 7, displacement of the blocks 1, 1 is also prevented, and the screwing of the bolts 13 and 18 is prevented. Operation is smooth and workability is good.

In addition, in the joint structure of the present invention, the joint strength is high as described above, and the stepped portion 16 is provided at the opening periphery of the outer end surface 3a of the socket portion 3, and the groove portion 17 is provided on the inner end surface 3b of each socket portion 3. , the standard joint materials 15 and 15 are attached to the stepped portion 16 and the groove portion 17, respectively, so that the standard joint materials are arranged in double layers inside and outside, and the two blocks 1, 1 are bolted together through the connecting plate 5 and the eccentric seat plate 14. When tightening and fixing, these standard joint materials 15.15 were pressed between the end surface 2a of the end portion 2 and the end surface 4a of the connecting portion 4, so it is suitable for cases where the groundwater level is close to the ground surface in sandy soil and the groundwater pressure is extremely high. Even when installed in areas with extremely high external water pressure, such as when used as a retaining wall in a mountainous area with a lot of spring water, it can accurately prevent the intrusion of external water and has excellent water-stopping performance. canals can be easily constructed.

In particular, in the joint structure of the present invention, the inner regular joint material 15 attached to the groove 17 of the socket part 3 is pressed by the vertical end surface 2a of the end part 2, and the inner standard joint material 15 is attached to the step part 16 of the socket part 3. Since the outer regular joint material 15 is pressed by the vertical end face 4a of the connecting part 4, the very large weight of the block 1 acting in the vertical direction is not loaded at all on the regular joint material 15.15.

In other words, the standard joint material 15.15 due to the weight of block 1
Since it does not continue to be excessively compressed and lose its elasticity, the standard joint material 15.15 permanently maintains the water-stopping function that depends on its elasticity.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a front view of a U-shaped waterway block, Fig. 2 is a plan view of the block, Fig. 3 is a left side view of the block, and Fig. 4 is a diagram of the block. 5 is a front view of the joint portion of the same block, FIG. 6 is a sectional view taken along the line A--A in FIG. 5, and FIG. 7 is a perspective view of the connecting plate and the eccentric seat plate. 1...Block for U-shaped waterway, 2...End part, 3...Socket part, 4...Connection part, 5...... Communication plate, 7... Receiving groove,
6... Bottom of receiving groove, 8... Insert, 10.11... Through hole, 12... Stopper, 13, 18...・Bolt, 14...
...Eccentric seat plate, 15...Standard joint material, 16...
...Step part, 17...Groove part.

Claims (1)

[Scope of utility model registration request] Two standard joint materials 15 and 15 are inserted between the two U-water channel blocks 1, 1, and the connecting plate 5 that is in contact with each block 1, 1 is inserted into the through hole 10 at each end of the connecting plate 5, 1
This is a joint structure of U-type weld channel blocks that are fastened to the blocks 1 and 1 by bolts 13 and 18 passing through the block 1, and a U-shaped socket part 3 is formed at one end of each block 1, and the U-shaped socket part 3 is formed at one end of each block 1. A connecting portion 4 having a cross-sectional shape matching that of the socket portion 3 is provided on the other end portion 2 so as to protrude from the end surface 2a by an amount corresponding to the depth of the socket portion 3 toward the socket portion 3. 4 and a receiving groove 7 on each outer surface of the socket portion 3,
7 is provided, and the bolt 13 is provided on the bottom surface 6, 6 of each receiving groove 7, 7.
. One of the through-holes 11 of 5 is a long hole in the length direction of the block 1, and a stopper 12 is provided protruding from the outside of the through-hole 11 on the communication plate 5. The end portion 2 is inserted into the socket portion 3 of the other U welding channel block 1, and the receiving groove 7 of the socket portion 3 is connected to the socket portion 3.
The connecting plate 5 is fitted into the receiving groove 7 of the connecting part 4, and the connecting plate 5 is brought into close contact with the bottom surface 6 of each receiving groove 7, and the bolts 13 and 18 are tightened. The installed standard joint material 15 is pressed with the vertical end surface 2a of the end portion 2, and the standard joint material 15 installed on the stepped portion 16 is pressed with the vertical end surface 4a of the connecting portion 4 to open the through hole 11. Passing bolt 18
A joint structure of a U-welcome channel block in which the circumferential surface of the eccentric seat plate 14 fitted into the stopper 12 is brought into contact with the side surface of the stopper 12.