JPS61130692A - Method of connecting construction of concrete block - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for connecting concrete blocks that can easily, quickly, and firmly and reliably connect concrete blocks to be connected.

(Prior art) Concrete blocks (for example, box culverts) are connected to each other via connecting shafts at their connecting ends.
In the conventional construction method, for example, as shown in factors 7 and 8, connecting recesses are formed on the surface of the connecting end portions of both blocks a and b.
In addition, a groove d extending from the connecting recess in the direction of the joint end C is provided, and a joint end C of both blocks a and a is provided.
, c are brought into contact with each other so that the open ends of the grooves d match, and then a connecting shaft r having threaded parts e, e at both ends is connected, and the threaded parts e, e form a connecting recess, b. Inside position! Then, fit into the communicating grooves d and d so that the grooves e and
Blocks a and a were connected to each other by screwing nuts g and g onto e and tightening the nuts g and g.

(Problem to be solved by the invention) However, in this construction method, if the groove d is provided on the side surface of the block a (usually provided on the side surface)
, there was a drawback that the connecting shaft fitted into the grooves d and d was likely to come off when the nut g was screwed and tightened. In addition, the wall surface of the connecting recess on the joint end C side was formed as an inclined surface that gently sloped from the inside to the outside in the direction of the joint end C, due to the molding of the connecting recess. g
After tightening, there was a problem in that the connection shaft f gradually moved in the direction of disengagement (outward direction) F, and the connection of the block 1.1 became loose.

The present invention aims to provide a method for connecting concrete blocks that can solve these problems.

(Means for Solving the Problems) The method for connecting concrete blocks of the present invention (hereinafter referred to as the method) is a method for connecting concrete blocks l to be connected.
, ] A connection method in which the blocks l and 1 are connected to each other using a connecting shaft 2 having threaded portions 12.12 at both ends and a nut 13.13, the inner surfaces of the connecting end portions 6 of both blocks l, 1. 4 (see FIG. 1) or the outer surface 5 are provided with connection recesses 11, 11 spaced apart from the joint ends 7, 7, and the cough blocks 1.1 are provided with connecting recesses 11, 11 spaced apart from the joint ends 7.7. Connecting recess 11. Extending in the 11 direction, the connecting recess 1
．． 1. ] 1 are provided, and at least one of the insertion holes 9 extends beyond the connecting recess 11, and the entire length of the insertion hole 9 is inserted into the insertion hole 9.
The outer end lO of the connecting shaft 2 is set to such an extent that it does not protrude from the joining end 7 when the connecting shaft 2 is completely inserted. In addition, the extent to which the outer end 10
The outer end 10 may protrude somewhat from the joint end 7, and the outer end 10 may be slightly set back from the joint end 7 as long as it does not interfere with the gripping of the connecting shaft 2 in the joint recess 11, which will be described later. After the connecting shaft 2 is completely accommodated in the long insertion hole 9, both blocks 1. 1
The joining ends 7, 7 of the insertion hole 9.9 are connected to the open end 16.1 of the insertion hole 9.9.
After that, a part of the connecting shaft 2 is inserted into the insertion hole 9 of the other block by grasping the connecting shaft 2 in the connecting recess 11, and inserting the connecting shaft 2 into the insertion hole 9 of the other block. 12.12 to both blocks l, 1 connecting recess 11.1
1, and then, by screwing the nut 13 onto the threaded part 12 in the connecting recess 11 and tightening the opening part 13, both blocks 1. 1 Connect each other.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings, taking as an example a case in which concrete blocks configured as a box culvert la are connected to each other via a connecting shaft 2.

As shown in FIGS. 1 to 6, the cough box culvert la has both side surfaces (outer surface portions) of the box culvert main body 3.
Inserts for insertion of the connecting shaft 2 located in the upper and lower parts of both connecting end parts 6.6 of 5.5 and extending in the length direction of the box culvert body 3 from its rejoining end 7.7. A hole 9 is provided, and the entire length of the insertion hole 9 is such that when the connecting shaft 2 is completely inserted into the insertion hole 9, the outer end 10 of the connecting shaft 2 is connected to the joint end 7. (See Fig. 3), and a connecting recess 11 formed by recessing the side surface 5 is interposed in the center of the insertion hole 9. Recess 11
, so that the nut 7) 13 can be screwed into the threaded portion 12 provided at the end portion of the connecting shaft 2, and the nut 13 can be brought into contact with the outer wall surface 15 of the connecting recess 11. (See Figure 5).

Next, we will explain methods 3 to 5 for connecting box culverts to each other.
This will be explained using figures. First, after completely inserting the connecting shaft 2 into the insertion hole 9 of one of the box culverts (see Fig. 3), insert the joint ends 7, 7 of both box culverts into the insertion hole 9. .9 so that the open ends 16. Grip and insert into the insertion hole 9 of the other box culvert 1-1a2, and screw the threaded portions 12.12 provided at both ends of the connecting shaft 2 into both box culverts la1. la2 in the connecting recess 11.11 (see FIG. 4), then both the connecting recesses 1
1, 11, screw the nut 13.13 onto the threaded part 12.12.
Both box culverts are connected to each other by screwing them together and tightening the nuts 13 and 13 (see Fig. 5).

FIG. 6 shows a state in which box culverts la and la are successively connected to each other by the connection method according to the present invention, and after the connection, the connection recess 11 is filled with mortar.

The connection method of the present invention is applicable not only to the connection of box culverts as shown in the above embodiments, but also to connection of concrete blocks, such as connection of side gutters, retaining wall blocks, retaining wall foundation blocks, etc. It can be widely applied to

(Effects of the Invention) In the connection method of the present invention, after the connection shaft is completely inserted into the insertion hole of one block, the joint ends of both blocks are brought into contact with each other, and then a part of the connection shaft is inserted into the other block. Since the basic configuration is to insert the connecting shaft into the insertion hole of the block, the connecting shaft is stably housed in the insertion hole. 8
As shown in the figure), there is no risk of the connecting shaft coming off when screwing or tightening the nut, and the connecting work can be done easily and quickly. Moreover, the connection can be made firmly and reliably without causing a situation where the connection becomes loose after tightening the nut, and therefore, the reliability of the connection is ensured over a long period of time.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a block used in the connection method of the present invention, Fig. 2 is a perspective view showing an insertion hole provided in the block and a connection shaft, and Figs. 3 to 5 are connections between blocks. FIG. 6 is a perspective view showing the blocks in a connected state, and FIGS. 7 and 8 are explanatory views explaining the conventional connection method. DESCRIPTION OF SYMBOLS 1...Block, 2...Connection shaft, 4...Inner surface part, 5...Outer surface part, 7...Joint end part, 9...
Insertion hole portion, IO... Outer end of connecting shaft, 11... Connection recess, 12... Threaded portion, 13... Nut, 16...
...Opening end of the insertion hole.

Claims (1)

[Claims] A connection method in which concrete blocks 1 and 1 to be connected are connected using a connection shaft 2 having threaded portions 12 and 12 at both ends and nuts 13 and 13, the blocks 1 and 1 being connected together. Connecting recesses 11, 11 are provided on the inner surface portion 4 or outer surface portion 5 of the connecting end portions 6, 6 of 1, and are spaced apart from the joining ends 7, 7, and both blocks 1, 1
are provided with insertion holes 9, 9 extending from the joining ends 7, 7 in the direction of the connecting recesses 11, 11 and opening in the connecting recesses 11, 11, and at least one of the insertion holes 9 is provided with an insertion hole 9 for connecting. It shall extend beyond the recess 11, and its entire length shall be
When the connecting shaft 2 is completely inserted into the insertion hole 9, the outer end 10 of the connecting shaft 2 does not protrude from the joint end 7, and the long insertion hole 9 Connecting shaft 2 to
After completely storing the joint ends 7, 7 of both blocks 1, 1
are brought into contact with each other so that the opening ends 16, 16 of the insertion holes 9, 9 match, and then a part of the connecting shaft 2 is held in the connecting recess 11 by gripping the connecting shaft 2, etc. The nut 13 is inserted into the insertion hole 9 and the threaded parts 12, 12 are positioned in the connecting recesses 11, 11 of both blocks 1, 1, and then the nut 13 is inserted into the threaded part 12 in the connecting recess 11. A concrete block connecting method characterized in that both blocks 1, 1 are connected to each other by screwing them together and tightening the nut 13.