JPS607102B2 - Connection method and joints for deformed bars for reinforcing bars - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for easily realizing the connection of deformed beams for reinforcing bars, and a joint used for realizing the connection.

By the way, there are two ways to achieve butt connection of deformed steel bars for reinforcing bars: one is by welding, and the other is to use joints.

However, since the above-mentioned butt connections are usually performed at reinforcing bar construction sites, when using welding methods, it is inconvenient to prepare a welding machine, a welding power source, and to deploy workers who are sufficiently skilled in welding. However, when using a joint, there is an advantage in that it can be accomplished by simply preparing a relatively simple hand tool and without requiring much skill.

On the other hand, there are two types of joints that realize this kind of butt connection: those that are cylindrical and long in the axial direction, which are integrally molded from the beginning, and those that are two cylindrical joints that are axially long and that are joined together facing each other during use. Some of these joints have a split shape, but in any case, the inner surface of these joints in contact with the irregularly shaped pole material has a split shape in order to obtain sufficient connection strength against tensile loads in all axial directions. A recess is formed to fit the protrusion on the surface of the material, commonly called a ridge.Therefore, in the above-mentioned cylindrical joint, the groove on the inner surface is connected to the protrusion on the surface of the birch material. In order to ensure reliable engagement, the application is limited to irregularly shaped rods with threaded ridges, and has the disadvantage that it cannot be applied to other irregularly shaped rods with protrusions other than male threads.

However, depending on the application target mentioned above, this cylindrical joint must have a threaded joint structure with a male thread-shaped concave groove on the inner surface, resulting in difficulties in efficient manufacturing and material loss. However, it has the drawback of high production costs, and when used, it is necessary to use a lock nut or inject structural adhesive to fix it even if play in the axial direction is dealt with, so it is not always possible to create an irregular shape. It does not simplify the Kabamura connection work.On the other hand, the above-mentioned two-split joint does not simplify the connection work.
Regardless of the shape of the protrusion on the rod-like surface, as long as the groove on the inner surface is formed to match the protrusion, it can be easily and reliably engaged with the protrusion, and therefore, the application is also symmetrical. , it has the advantage of being able to be expanded to various irregularly shaped Kabamuras, including those with Neji-Hingata.

However, this split joint "can be formed by forging only by plastic working, regardless of the shape of the groove on the inner surface, so efficient manufacturing without material loss is possible." However, when using this joint, it is important to keep the two irregularly shaped pieces of wood abutting each other, and while holding the butt point from both sides, Because it is necessary to connect and integrate these two members with an appropriate connecting means while aligning them facing each other and properly engaging the grooves on the inner surface of each member with the protrusions on the surface of each of the above-mentioned materials, it is necessary to This invention has the disadvantage of making the connection work of reinforcing bars very complicated.In order to deal with the above-mentioned conventional problems associated with butt connections of irregularly shaped beams for reinforcing bars, the present invention aims to solve the above-mentioned problems in connection with butt connections of irregularly shaped beams for reinforcing bars. The object of the present invention is to provide a connection method that can be easily implemented on-site, and a joint that makes it possible to implement this method.

That is, the connection method according to the present invention is as follows: First, one of the two joint constituent members constituting the two-split joint is temporarily fixed to the connecting end of the deformed bamboo material that is supported in advance by concrete or the like. After that, place the connecting end of the odd-shaped bamboo material that is to be butt-connected on this joint component, and attach the remaining joint component to each connecting end of both rattan materials, while temporarily fixing the first one. The joint according to the present invention can be integrated with the joint component members that have been connected to each other to achieve butt connection of irregularly shaped pieces of material.Furthermore, the joint according to the present invention is designed to connect two parts along the direction of the bag so that they can be joined and integrated while facing each other during use. Temporarily attach one of the two joint components to the connection end of one of the two irregularly shaped pole materials to be connected. and fixing means, and until both joint components are joined and integrated, the joint component that is not temporarily fixed is temporarily held by the above-mentioned provisional title means to the extent that it does not interfere with the connection work. The details of both of these inventions will be described below with reference to the embodiments shown in the drawings. In the drawings, reference numeral 192 indicates deformed rattan material for reinforcing bars to be butt-connected.

On each surface of these two wicker materials 1 and 2, protruding ridges a and 2a called hooks are formed at a constant pitch with respect to the wisteria direction. These protrusions la and 2a may be formed in the shape of one circumferentially circumferential line and shifted in the axial direction by half a pitch difference by half a circumference as shown in the figure, or they may be formed in a shape that is continuous in an annular shape in the circumferential direction. In some cases, it is formed into a shape, or in other cases, it is formed into a male screw shape that continues spirally in the direction of the mari.The surface of the bamboo wood in the example shown in the figure has protrusions along the direction of the mari, which can also be called ~stripes. The striations b and 2b are formed in addition to the above-mentioned protrusions la and 2a. Among these two birch materials, one of the birch materials is embedded in the concrete 3 in advance or One end of the other bamboo material 2 is butt-connected to the tip of the birch 1 using a joint such as the one described below so as to be continuous in all axial directions. In other words, this joint consists of two joint component parts 4 and 5 each having a shape in which the entire cylindrical joint, which is long in all directions of the axis, is divided into two parts along the ball direction.
It is assumed that they will be connected and integrated facing each other during use. On each inner surface of these two member turtles, 5,
Each protrusion la of the above-mentioned Ryohin wood? The concave grooves a and 5a, which are shaped to match 2a, are also formed in the same arrangement as their respective protrusions, and if necessary, a hollow portion with a larger diameter than the inner diameter of the joint when integrated A recess 4 that can constitute
b, 5b may be formed in the middle of each inner surface as shown in the figure. The joint consisting of these joint members 4 and 5 is provided with means for temporarily fixing one joint member 4 to the connecting end of one of the irregularly shaped pieces 1.

This means consists of an annular body 6 surrounding the outer peripheries of the opposing members 4 and 5 at a location near one end thereof, and a set screw 7 screwed into one location of the annular body so as to penetrate in the radial direction. The ring body 6 is located on the completely opposite side of the position of the set screw 7, and is located on the joint component 4 to be temporarily fixed.
It is fixed in advance by welding 8 or the like. On the other hand, the remaining joint component 5 has a screw through hole 9 with a slightly larger diameter than the set screw 7 at a location corresponding to the set screw 7, and this hole 9 is located inside the ring body 6. By inserting the set screw 7 therethrough, it is temporarily held facing the joint component village 4 to be temporarily fixed. However, even when the ring body 6 is fixed to one of the joint constituent members 4 and 5 and temporarily holds the remaining one, the irregularly shaped camphor wood 1 and 2 are not allowed to move in the axial direction between the two members 4 and 5. In order to enable free insertion into the eye, a sufficient margin is provided in the length direction of the set screw 7, so that the distance between the two members 4 and 5 can be increased to the maximum required range. In addition, the ring body 6 in the illustrated example is
Annular groove 4c formed on each outer peripheral surface of joint component members 4 and 5
, 5c, but these annular grooves are not necessarily required. Incidentally, a known means is used to integrate the joint components 4 and 5, and in the illustrated example, fasteners 10 consisting of a U-bolt 10a and a presser plate 10b are used at two locations on both ends.

Therefore, in order to position this U-bolt 10a, annular grooves 4d and 5 are formed on the outer peripheral surfaces of both ends of each joint component member 4 and 5 in the illustrated example.
d are formed respectively, but these annular grooves are also not necessarily required. The butt connection of the irregularly shaped pole panels 1 and 2 using the joint as described above is realized in the following manner.

First, the irregularly shaped bamboo material 1 is partially or mostly solidified with concrete 3 or firmly supported by other means.
, the joint component 4 to which the ring body 6 is fixed, and the joint component 5 temporarily held by the set screw 7 of the ring body, to the tip, that is, the connection end (in the example, the upper end), With the two facing each other and with the gap widened to the maximum, align them by about half their length in the direction of the ball, align the former member 4 with the connecting end of the above-mentioned member 1, and make the groove 4a on the inner surface. Projections la on the material surface
screw in the setscrew 7 while properly engaging the screws. Then, since the tip of this screw 7 presses the surface of the bamboo wood 1 from the side opposite to the member 4, the member 4 is moved by the screw and the ring body 6, as shown in FIGS. 1 and 2. It is temporarily fixed to the connection end of the bamboo wood 1. At this time, the remaining member 5 is temporarily held by the setscrew 7 passing through the screw hole 9, and faces the temporarily fixed cover material 4, as shown in FIGS. 1 and 2. Next, one end, that is, the connecting end (in the example, the lower end) of the irregular shaped timber 2 to be butt-connected to the irregular shaped timber 1, is inserted into the interior between the two opposing joint sections 4 and 5, and the remaining approximately half is inserted. After inserting it to a depth corresponding to the length, align this connecting end with the inner surface of the temporarily fixed member 4,
While correctly engaging the protrusions 2a on the surface of the bamboo material with the grooves 4a on the inner surface, place the temporarily held member 5 onto each connecting end of the material 1 and 2, and then press the inner surface of the part. The concave grooves 5a are properly engaged with the protrusions la and 2a on the surface of the amphibious material.

However, since one of the members 4 between them has already been tentatively assigned to the other Fujimura 1, there is no need to support it by hand, and the remaining member 5 does not interfere with the insertion of the bamboo wood 2. After insertion, the screw through hole 9 is inserted into the set screw 7.
Since it has a larger diameter, it can be easily moved toward the tribute materials 1 and 2. After that, a tightening odor 1 as shown in the illustration
0 etc., when the two joint constituent members 4, 5 are joined and integrated facing each other, the two irregularly shaped beam members 1, 2 are connected to the third and fourth joint members.
As shown in the figure, each connection end is strongly held by both members 4 and 5, and the connection ends are butted together so as to exhibit sufficient connection strength against the bending direction load, and also have sufficient connection strength against the tensile load in the direction of the ball. This indicates the strength of the connection. As mentioned above, the connection method according to the present invention is a connection method using a split-shaped joint, in which one of the two joint constituent members constituting the joint is first connected to one of the irregularly shaped birch members. After temporarily fixing it to the connecting end, while applying the connecting end of the other irregularly shaped shim material to this joint component, the remaining one of the joint components is attached to each connecting end of both of the shims, and these two joint configurations are completed. Since the joints are made to face each other and are integrated, the advantages of a joint with two sub-shapes, namely, that it can be applied to various irregularly shaped bamboo materials and are inexpensive, can be fully utilized. By utilizing this method, it is possible to easily butt connect irregularly shaped birch materials even at reinforcing steel construction sites. Compared to conventional methods, the complexity of the connection work can be avoided and the work can be carried out more efficiently. In addition, the joint according to the present invention has two joint constituent members that are cut in half along the ball direction so that they can be joined and integrated while facing each other during use, and two irregularly shaped Yokomura parts that are to be butt-connected. means for temporarily fixing either one of the above-mentioned members to one of the connecting ends, and until the two members are combined and integrated, the member that is not temporarily fixed is fixed to the one that is temporarily fixed. Since the above-mentioned temporary fixing means is used to temporarily hold the joint member facing each other at a slight distance from the member, it is possible to simply change the shape of the groove on the inner surface of the joint component.
The connecting method of the present invention can be applied to various types of irregularly shaped trees, and when connecting these birch materials, the above-described connecting method of the present invention can be easily carried out by temporarily fixing one side of the two joint components and temporarily holding the remaining one. It is possible to realize the butt connection of irregularly shaped pieces without requiring anything other than simple manual labor, and also prevents the parts of the joint that are not temporarily fixed from separating and falling off, thereby preventing the loss of powder from these parts. It can be expected to have preventive effects.

[Brief explanation of the drawing]

Figure 1 is a side view of the disconnection during connection, showing an embodiment of the present invention. Figure 2 is a sectional view taken along line A-A in Figure 3. FIG. 4 is a sectional view taken along line B--B in FIG. 3. a, 2...Irregular-shaped bamboo wood, la letter 2a...projection, toki 9
5...〇 Joint component, 4a, 5a... Concave groove, 6... Ring body 7... Set screw "9... Screw through hole,
Neck Q... Fastener. Tsubasa Z Diagram 4 Koji Fude Zo Nada Diagram 3

Claims (1)

[Claims] 1. One side of a set of two joints constituting a joint shaped like two halves along the axial direction is attached to one connecting end of two irregularly shaped bars to be butt-connected. After temporarily fixing, while applying the connecting end of the other irregularly shaped bar to the joint component, the remaining joint component is attached to each connecting end of both of the irregularly shaped bars, and then both joint components are attached. A method for connecting deformed bars for reinforcing bars, characterized in that they are joined and integrated facing each other. 2 It has a shape that is split into two parts along the axial direction so that they can be joined together facing each other during use, and each inner surface has a ridge on each surface of the two irregularly shaped bars that are to be butt-connected. It consists of a set of two joint constituent members each having a concave groove that can be fitted together, and a means for temporarily fixing one of the joint constituent members to the connecting end of one of the irregularly shaped bars, and the above-mentioned two joint constituent members Until the joint components are combined and integrated, the joint component that is not temporarily fixed is temporarily held by the above temporary fixing means in a state facing the joint component that is temporarily fixed at a slight distance. A joint for deformed bars for reinforcing bars featuring the following. 3. The temporary fixing means includes an annular body fixed near one end of one of the joint constituent members so as to surround a pair of opposing joint constituent members, and a ring body fixed toward the joint constituent member to which the ring body is fixed. and a set screw screwed into the annular body so as to pass through the joint, and the annular body is characterized in that the annular body has enough room to slightly increase the distance between the opposing joint components. A joint for deformed bars for reinforcing bars as set forth in claim 2. 4. A screw hole with a slightly larger diameter than the set screw screwed into the ring body is provided in the joint component to which the ring body is not fixed, and the set screw inserted into the hole allows
A joint for deformed bars for reinforcing bars as set forth in claims 2 and 3, characterized in that the joint component is temporarily held.