JP2884393B2 - High strength bolt friction joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-strength bolt friction joining structure for joining an H-section steel or a CT section steel. It is mainly used for steel structures such as construction, civil engineering, and mechanical plants.

[0002]

2. Description of the Related Art High-strength bolt friction welding is widely used for joining H-section steel and CT section steel. At that time, the attachment plate is used. Conventionally, the mode is as follows. As for the H-section steel, as shown in FIG.
A high-strength bolt is inserted into the bolt hole 11 and fastened using the auxiliary plate 8 outside the flange 1 for the a and 5a and the auxiliary plate 9 outside the flange 2 for the internal plates 6a and 7a inside the flange 2 for the flange 2. I do. In addition, high strength bolts are inserted into the bolt holes 12 and fastened to the web 3 using the attachment plates 10 and 10. Here, the attachment plates 4a, 5a
a, and for the attachment plate inside the flange 2, the attachment plate 6
Although they are divided into a and 7a, a common auxiliary plate 8, 9 is used without being divided for the auxiliary plate outside the flange 1 and the auxiliary plate outside the flange 2. As shown in FIG. 4, for the CT section steel, high strength bolts are inserted into the bolt holes 11 and fastened using the attachment plates 8 outside the flange 1 with respect to the attachment plates 4 a and 5 a inside the flange 1. A high-strength bolt is inserted into the bolt hole 12 and fastened to the web 3 using the attachment plates 10 and 10. The attachment plate outside the flange 1 is shown in FIG.
As in the case of the first embodiment, a common auxiliary plate 8 is used without being divided.

[0003] The use of the attachment plate in such an embodiment can be said to be conventional. The reason is that the attachment plate must be divided because the web exists inside the flange, but it is not necessary outside the flange. It is believed that there is no need to divide it, and it is believed that not dividing the outer plate on the outside of the flange can reduce the number of parts in terms of processing and construction, which is efficient, leading to labor saving and cost reduction. I think that it depends.

[0004]

[Problems to be solved by the invention]

(1) However, in this method, since the sizes of the attachment plates are different between the inside and the outside of the flange, two kinds of attachment plates must always be prepared. As a result, the number of processing steps for the base plate increases, the processing management becomes complicated, and the packing shape cannot be made compact, so that the transport efficiency of the base plate is poor. (2) If the number of high-strength bolts per flange is one and the number of high-strength bolts per flange is large, it may be difficult to align the holes at the time of construction. In order to perform the insertion, or to bore the hole so as to cause a problem in performance at the site, the mechanical quality and performance of the joint as the frictional joint may be impaired. To prevent this, very precise processing management and construction management are required, and there is a possibility that the overall efficiency of processing and construction may be impaired. The above points (1) and (2) are problems of the conventional friction joining structure using the auxiliary plate.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, an object of the present invention is to provide a high-strength bolt which stabilizes the mechanical performance at the joint while reducing the cost by improving the efficiency of processing and construction and saving labor. It is intended to provide a friction joining structure.

[0006]

SUMMARY OF THE INVENTION A high-strength bolt friction joining structure according to the present invention is a high-strength bolt friction joining structure for joining an H-section steel or a CT section steel with a backing plate.
For both attachment plates inside the flange of the T-section steel, separate attachment plates are provided on the outside of the flange with the flange interposed, and high-strength bolts are inserted into the bolt holes to join the H-section steel or CT section steel. It is constituted by. Here, the high-strength bolt friction joining structure generates a frictional force between the contact plate and the contact surface between the H-section steel or the CT section steel by tightening with a high-strength bolt, and utilizes the frictional force to generate H. It refers to a joint structure that joins shaped steel or CT steel. The attachment plate outside the flange is
As in the case where the conventional attachment plate is divided into two along the longitudinal direction of the section steel, the attachment plate has the same shape and dimensions as the attachment plate inside the flange. Since all the attachment plates are the same, a single type of attachment plate may be prepared.

[0007]

According to the high-strength bolt friction joining structure of the present invention, since the auxiliary plate outside the flange is divided into two separate auxiliary plates by the above configuration, the two auxiliary plates are separately and independently provided. The hole can be aligned with the bolt hole of the flange, and the hole can be easily aligned. In addition, even if a manufacturing error occurs in the position of the bolt hole, the two attached plates are free to move with each other. Can be absorbed, and the high-strength bolt can be smoothly inserted.
Unnecessary insertion of the high-strength bolt is eliminated, and the high-strength bolt can be fastened without bias at each point, and the mechanical performance of the joint structure can be enhanced.

[0008]

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an example of a structure in which H-shaped steel members are friction-joined to each other by high-strength bolts. Both attachment plates 4a, 5 inside the flange of H-section steel
A separate attachment plates 4b and 5b are provided on the outside of the flange with the flange 1 interposed therebetween, and high-strength bolts are inserted into the bolt holes 11 and fastened. For flange 2,
Similarly, the attachment plates 6b and 7b are provided for both attachment plates 6a and 7a to form a high-strength bolt friction joining structure for joining an H-shaped steel. Regarding the web 3, the attachment plates 10, 10 and the bolt holes 1
The high-strength bolt inserted through 2 forms a high-strength bolt friction joining structure. FIG. 2 shows an example of a structure in which CT sections are friction-joined to each other by high-strength bolts. Separate attachment plates 4b and 5b are provided on the outside of the flange with the flange 1 interposed between the both attachment plates 4a and 5a inside the flange of the CT section steel, and high-strength bolts are inserted into the bolt holes 11 and fastened. , Forming a high-strength bolt friction joining structure for joining CT sections. With respect to the web 3, a high-strength bolt friction joining structure is formed by the attachment plates 10 and 10 and the high-strength bolt inserted into the bolt hole 12.

[0009]

According to the present invention, the following effects can be obtained. (1) Since the shape of the four attachment plates is the same, H-shaped steel or C
Only one kind of attachment plate is required for joining the flange of the T-section steel, which reduces the number of processing steps and simplifies processing management, resulting in an increase in processing speed and cost reduction. (2) Since the number of the attachment plates on the outside of the flange is two, the adjustment of the hole alignment and the operation at one time become very easy, and the number of on-site construction steps can be reduced. (3) As a result, unreasonable bolt insertion work and hole boring are reduced, and the mechanical performance of the joint is improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing another embodiment of the present invention.

FIG. 3 is a diagram showing a conventional technique.

FIG. 4 is a diagram showing another conventional technique.

[Description of Signs] 1 Flange 2 Flange 3 Web 4a, 4b Auxiliary plate 5a, 5b Auxiliary plate 6a, 6b Auxiliary plate 7a, 7b Auxiliary plate 8 Auxiliary plate 9 Auxiliary plate 10 Auxiliary plate 11 Bolt hole 12 Bolt hole

Claims (1)

(57) [Claims] In a high-strength bolted friction joining structure for joining an H-section steel or a CT section steel by an attachment plate, a flange is sandwiched between both attachment plates inside the flange of the H-section steel or the CT section steel. A high-strength bolt friction joining structure characterized in that separate attachment plates are provided outside the flange, high-strength bolts are inserted into bolt holes, and H-shaped steel or CT-shaped steel is joined.