JPH09177186A - Connection device between bar steel materials and connection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively connect bar steel materials, by fixing a joint having a shape corresponding to box-formed or bar steel outlines to a bar steel material to be connected so as to stretch the joint from the end of the material and inserting the other bar steel material therein. SOLUTION: A wide flange shape steel 1 is inserted in a box-form joint 10 by about half, provided with reinforcing materials at the edge of the flanges, when necessary, and the A-part is welded or blted to form a stretched joint. Another wide flange shape steel 2 is inserted in the stretched part along the box-formed joint 10 as a guide to connect them by butting both ends thereof. It is preferable to disperse the stresses by applying or charging a filling material like a cement material or a resin material in the clearance between the contact faces of the wide flange shape steel 1 to integrally join the wide flange shape steel and the joint. In this way, the connecting time of one joint can be reduced to several minutes or so.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an H-section steel, an I-section steel,
The present invention relates to a connecting device and a connecting method capable of efficiently connecting steel bar materials such as angle steel (L-shaped angle) and channel steel (C-shaped channel).

[0002]

2. Description of the Related Art In addition to a method of directly connecting by using welding or the like, a method of connecting through a joint material can be used to connect the steel bars to each other. Is often used in. The joint material used in this method is
Mainly composed of splice plates, the steel strip members are abutted against each other, and the splice plates are placed so as to be interposed between the members, and then the splice plates and members are joined by bolts or welding. The stress is transmitted between the members by being integrated with each other.

FIG. 1 is a view for explaining a conventional connecting method using an H-shaped steel as an example. The H-shaped steels 1 and 2 are butted against each other, and both sides of the upper and lower flanges of the H-shaped steel and both sides of the abdominal plate are spread over both. A total of eight splicing plates 3 are applied and bolted through the pre-drilled bolt holes. For example, when using this method to pile steel bar material inside or near the track using a machine, it is necessary to prevent the machine and pile from hitting them because there are obstacles such as overhead lines in the sky. is there. For this reason, using a low-head pile driving machine, etc., a pile made of a bar steel material having a length limited to 2 to 3 m, for example, an H-shaped steel, is driven by a method such as a rotary type, a striking type, or a vibration type to obtain a predetermined depth. When driving up to that point, the next pile is repeatedly connected in the same manner as above, and the required length is designed in order to be driven in sequence.

[0004]

However, in the conventional connecting method, first, the work of abutting the ends of the steel bars to a predetermined position is performed, and then the splicing plate is set to a predetermined position while considering the positions of the respective surfaces of the members. Must be installed according to the shape and dimension accuracy of. Further, unless the installed splicing plate and the steel strip are joined by bolts or welding, the steel strips cannot be completely integrated with each other. For example, as shown in FIG. 1, when H-shaped steel members are connected to each other by bolts through joints of splicing plates, the bolt holes of the steel strip and the splicing plates must be aligned for all the bolt holes. Therefore, it takes a lot of time. Further, since the installation work is completed and the bolt tightening work for applying a predetermined bolt tightening force for integrating the steel bar and the joint is performed again for all the bolts, further time is required. However, for example, the pile driving work of the steel strips in or near the track must be performed in a short time during the power outage during the nighttime track closing time during which the train does not pass. In the field where there is a restriction on the working time and obstacles such as the sky, the conventional connecting method has a problem, and shortening the connecting time between the steel strips is a very important issue.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to facilitate the connection between the steel bar members and significantly reduce the working time on site.

[0006]

According to the present invention, a hollow joint having a shape surrounding a connecting portion of a steel strip is used, and a hollow joint is formed at the connecting portion of one steel strip with the joint portion protruding from the end. They are joined by welding in advance, and at the site, the connecting part of the other steel bars is inserted into the overhanging joint part, and the ends of the members are butted to connect them. Are connected at a predetermined position in the guide so that there is not much play between the contact surface of the guide and the steel strip. Alternatively, stress concentration can be dispersed by applying or filling a filling material (agent) on the inner surface of the joint, and by attaching a reinforcing material to the joint part of the steel bar and the joint.
It is possible to avoid it.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. In the following, the H-section steel will be described as an example of the bar material to be connected, but the present invention is not limited to this and can be applied to I-section steel, chevron steel, channel steel and the like. is there. FIG. 2 is a diagram showing an example of the present invention using a box-shaped joint. As shown in FIG. 2A, in a factory or the like, the H-shaped steel 1 is inserted up to about half of the box-shaped joint 10 and the A portion is welded to form an overhang joint portion. Of course, it may be joined by bolts or the like instead of welding. Then, in the field, as shown in FIG. 2B, the H-section steel 2 to be connected is inserted into the overhanging portion of the joint, and the material end of the H-section steel 2 is butt-joined with the material end of the H-section steel 1. . At this time, the box-shaped joint serves as a guide, and by simply inserting it, the steel strips can be positioned relative to each other and the connection is completed. In addition, when using it for piles etc., there may be obstacles in the ground and the pile may be temporarily pulled out.Therefore, box holes and steel bar materials should be drilled at several places and connected by bolting or welding. I'll do it.
For example, when used as a pile member, the box-type joint 10 is
Since there is a space between the H-shaped steel web and the H-shaped steel belly plate, it is possible to avoid an increase in the resistance of soil, groundwater, etc. when driving the H-shaped steel due to the provision of the joint. In addition, when it is driven in, cement milk, mortar, etc. are poured in to eliminate the voids between the H-shaped steel and the joint as well as the voids around the ground. At that time, the gap between the H-section steel and the joint has a function of not obstructing the breathing action.

FIG. 3 is a diagram showing another example of the present invention using an H-shaped joint that follows the outer shape of a steel bar. In this example, the joint 20 has a shape that follows the shape of H-section steel,
At the factory, the H-shaped steel 1 is inserted up to about half of this joint and the A portion is welded to form an overhanging joint portion (Fig. 3 (a)). Next, in the field, the H-section steel 2 is inserted into the projecting portion of the joint, and the material ends of the H-section steels 1 and 2 are butt-joined in the joint to complete the connection. When the H-shaped joint is used as a member of a pile, for example, when driving the pile, it is possible to avoid an increase in resistance of soil, groundwater, or the like due to the recessed portion on the outer surface of the joint.

FIG. 4 is a view showing another example in which a space filler (agent) is applied or filled in the gap between the inner surface of the joint and the contact surface of the bar steel. FIG. 4 (a) shows the case of the box type joint in FIG.
(B) shows the case of the H-shaped joint, and as described above, the H-shaped steel 1 has the box-shaped joint 10 and the H-shaped joint 2 in advance.
It is inserted and fixed at 0, leaving an overhang, and H-shaped steel 2
By applying the filling material (agent) before the insertion or by filling the filling material after the insertion, the H-section steel and the joint are integrated and the connection is completed. It is desirable that the interposing material (agent) intervenes in the entire surface of the contact surface as much as possible, but it may be part thereof. Further, as the filling material (agent), a resin material or the like may be used in addition to the cement material. By filling the voids with the filling material (agent), the stress is dispersed.

FIG. 5 is a diagram showing an example in which a reinforcing material is provided and connected. FIG. 5A shows a case where a box-shaped joint is used, and a reinforcing material 11 is provided between the upper and lower flanges at the flange edge portions of the H-shaped steels 1 and 2 in the joint. In this example, there are two at the seam and two at the end of the joint, for a total of eight (both sides), but the number and shape of the reinforcing materials (round, square, plate-like, etc.) can be increased or decreased as necessary. The shape may be selected. When a vertical force is applied to the H-section steel, the flange ends bend so as to approach each other, and as a result, stress concentrates on the central part of the flange surface and the joint is broken. Therefore, by providing the reinforcing material between the flanges, the flange end portion is prevented from being deformed and the stress is dispersed. Therefore, the stress concentration on the central portion of the flange surface is avoided, and the joint is prevented from being broken.

FIG. 5 (b) shows the case where an H-shaped joint is used. In the case of FIG. 5 (a), the joint body is provided with eight reinforcing members 21 for preventing the flange from being deformed. Similarly, it is possible to prevent the joint from being deformed or destroyed.

FIG. 6 shows a joint body provided with a reinforcing material.
FIG. 6A shows the case of a box-shaped joint, and FIG. 6B shows the case of an H-shaped joint. In the case of both joints, reinforcing members 12 and 2 are provided in the longitudinal direction of the H-section steel at the centers of the upper and lower surfaces corresponding to the flanges of the H-section steel.
2 is provided. As described above, since stress concentration tends to occur in the central portion of the flange surface, the stress is dispersed by providing the reinforcing members 12 and 22 in this portion. Alternatively, from the cross-sectional deformation of the joint, if necessary, a reinforcing material is also provided in the direction perpendicular to the longitudinal direction of the joint or the bar steel material to further disperse the stress.

FIG. 7 is a view showing another example in which a reinforcing member is provided by using a box-shaped joint. FIG. 7 (a) shows a U-shaped reinforcing member 13 provided in the space between the H-shaped steel belly plate, and FIG. 7 (b) shows a plate between the upper and lower flange edges of the H-shaped steel over the length of the joint. In any case, it is possible to prevent the deformation of the H-shaped steel abutting portion in the joint and the flange of the joint end portion by providing the shape-like reinforcing member 14. In the above embodiment, the connection between the same steel bars has been described, but the present invention is not limited to this, and the present invention can be applied to steel bars having different shapes.

[0014]

As described above, according to the present invention, a hollow joint having a shape surrounding a steel strip is used, which is connected to one steel strip in advance, and the other steel strip is connected to the joint on site. Since the connection between the steel strips is completed simply by inserting it as a guide, the connection between the steel strip and the joint is integrated after fine adjustment of the connection position between the steel strip and the joint at the site, as in the past. The work efficiency can be remarkably improved and the work time can be shortened as compared with the method of performing work, which is extremely effective in the field where the work time is restricted. In the conventional method, it took 30 minutes or more to connect one joint, but in the method of the present invention, the working time can be reduced to about several minutes. Further, it is possible to disperse the stress by applying or filling a filling material (agent) between the contact surfaces of the joint and the steel bar, or by providing a reinforcing material, it is possible to avoid stress concentration. it can.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a conventional connecting method.

FIG. 2 is a diagram showing an example of the present invention using a box-shaped joint.

FIG. 3 is a diagram showing another example of the present invention using a joint having a shape that follows the outer shape of a bar steel.

FIG. 4 is a diagram showing an example in which a space filler (agent) is applied or filled in a gap between a joint and a steel bar.

FIG. 5 is a diagram showing an example in which a reinforcing material is provided.

FIG. 6 is a diagram showing an example in which a reinforcing material is provided.

FIG. 7 is a diagram showing an example in which a reinforcing material is provided.

[Explanation of symbols]

1, 2 ... H-shaped steel, 10 ... Box type joint, 11, 12, 13,
14 ... Reinforcement material, 20 ... H-shaped joint, 21, 22 ... Reinforcement material.

Front page continuation (72) Inventor Kensaburo Ito 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Tohnichi Railway Company (72) Inventor Masayuki Kasa 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Nihon Passenger Railway Co., Ltd. (72) Inventor Takashi Goto 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Toichi Nihon Passenger Railway Co., Ltd.

Claims (8)

[Claims] 1. A hollow joint having a shape in which a connecting portion of the steel bars to be connected is inserted and the material ends thereof are butted to surround the connecting portion, and one end of the steel bars to be connected is formed. A joint between steel bar members, characterized in that a joint is connected so as to project from the portion, and the other bar steel member connected to the projecting joint portion is inserted. 2. The device according to claim 1, wherein the joint is
A steel-to-steel bar connecting device having a box shape or a shape following the outer shape of the steel strip. 3. The device according to claim 1, wherein
An interlocking apparatus for bar steel products, characterized in that at least a part of the inner surface of the joint is coated with or filled with a filling material (agent). 4. The device according to claim 1, wherein
A connecting device between steel strips, wherein a reinforcing material is attached to prevent deformation of the joint due to a force applied to the steel strips. 5. A hollow joint having a shape surrounding a connecting portion of a steel strip member is joined to one of the steel strip members to be connected so that the joint projects from the end of the steel strip product, and the projected joint portion is used as a guide for the other. The method for connecting steel strips according to claim 1, wherein the steel strips are inserted and the ends of the steel strips are butted against each other for connection. 6. The method of claim 5, wherein the joint comprises:
A method for connecting steel bars, which is characterized in that it has a box shape or a shape that follows the outer shape of steel bars. 7. The method according to claim 5, wherein
A method for connecting steel bar members, characterized in that a filling material (agent) is applied to at least a part of the inner surface of the joint member, or a gap between contact surfaces of the steel bar member and the joint member is filled. 8. The method according to claim 5 or 6, wherein
A method for connecting between steel bars, characterized in that a reinforcing material is attached to a connecting section or a joint of the steel bars.