JPS6344897B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a joint construction method for concrete products such as U-shaped ditches, culverts, manholes, and other products.

Conventional technology Conventionally, in the joint construction method for concrete products, an uneven fitting part is provided on the joint end surface, a joint is inserted into the uneven fitting part, and the joint material is compressed by the weight of concrete or external force, or The gap between joints is filled with mortar or special grout material.

Problems to be Solved by the Invention However, there was a drawback that it required a lot of effort to adjust the joints of the end faces of heavy concrete products.

Means for Solving the Problems In order to solve these problems, the present invention provides a method for forming holes on the upper surface of a concrete product near the joint end, and forming holes on the lower surface of a plate of an appropriate width to fit into the holes. A pair of shaft pieces is provided protrudingly, and the shaft pieces are fitted and connected to the upper surface of the concrete product in close proximity to each other, and the end faces are easily joined by the concrete's own weight, and the joints of the uneven fitting parts ensure watertightness, etc. This relates to a joint construction method that can be maintained.

Hereinafter, the configuration of the present invention will be explained with reference to practical example diagrams.

A protruding strip 2 is provided on one side of the joint end surfaces of various concrete products 1a and 1b such as U-shaped grooves, culverts, and manholes, and a groove 3 that fits with the protruding strip 2 is provided on the other side, and a joint material 4 is provided in the groove 3. is attached, and a locking hole 5a,
A plate 7 with a handle has a hole 5b drilled, the end face of the concrete product 1b brought closer to the end face of the concrete product 1a from the diagonally upward direction, and the upper end joined, and shaft pieces 6a, 6b protruding from both ends of the lower surface. Both shaft pieces are inserted into the locking holes 5 of the concrete products 1a and 1b.
a, 5b, and while rotating the concrete product 1b downward around the plate 7, the convex strip 2
This is done so that the groove 3 and the groove 3 are completely fitted together.

Functions and Effects Next, the functions and effects of the present invention will be explained with reference to practical example diagrams.

The joint joint construction method of the present invention is used when joining concrete products such as U-shaped grooves, and as shown in Fig. 1, the next concrete product is connected to the concrete product 1a installed in a fixed position. 1
When the concrete product 1b is rotated downward after the end faces are joined by tilting the end faces diagonally downward while lifting up the concrete products 1b appropriately, and the plate 7 with a handle is engaged with the joined upper face, the concrete product 1b is rotated downward, and the end faces of the concrete products 1a and 1b are Joint material 4 in groove 3 that can be easily joined
A pressurizing force corresponding to the weight of the concrete product 1b is applied to the concrete product 1b, compressing it and maintaining watertightness.Comparing to the case where they are joined horizontally facing each other, construction efficiency is improved without requiring much labor. It has the remarkable effects mentioned above, such as the ability to

[Brief explanation of the drawing]

Fig. 1 is a front view showing the welding process of products according to the method of the present invention, Fig. 2 is a partially enlarged plan view of the joined state, Fig. 3 is an enlarged front view of a plate with a handle,
FIG. 4 is an enlarged bottom view thereof. 1a, 1b...Concrete product, 2...Convex strip, 3
...concave groove, 4...joint material, 5a, 5b...locking hole, 6
a, 6b...Shaft piece, 7...Plate with handle.

Claims (1)

[Claims] 1 A convex strip is provided on one side of the joint end surface of various products used for civil engineering, construction, etc., and a groove that fits with the convex strip is provided on the other side, and a joint material is attached, and a locking hole is installed on the upper surface of each product near the joint end. , one product is brought close to the other from the top and the upper ends are joined, and both shaft pieces of a plate with a handle, which has shaft pieces protruding from both ends of the bottom surface, are engaged with the locking holes of both products. A joint construction method for various products used in civil engineering, construction, etc., characterized by fitting a convex strip and a concave groove while rotating the other diagonally upward product downward around a plate with a handle.