JP4657101B2 - Base material connecting structure and joining auxiliary member for the base material connecting structure - Google Patents

Description

  The present invention is, for example, a plate-like shape in which locking parts are provided on both sides between a base plate and a base material that are provided with base materials such as H-shaped steels constituting beams and columns straddling between the base materials. It is related with the base material connection technique connected in the state which interposed the auxiliary member for joining.

Conventionally, in joining steel materials applied to friction joints of steel structural materials such as buildings and bridges, there are various contrivances for increasing the friction coefficient, that is, the slip coefficient, at the joint surface in order to improve the joint strength. Has been made. For example, a method is known in which the slip coefficient is increased by removing the black skin on the joint surface to generate red rust, or the slip coefficient is increased by blasting such as shot blasting. However, the increase in the slip coefficient by these methods is naturally limited, and in either case, a large space is required and there is a problem in workability. By the way, the magnitude of the slip coefficient involves not only the surface roughness of the joint surface, that is, the height difference of the surface irregularities, but also the hardness of the surface of the joint surface. Therefore, in order to increase the unevenness of the unevenness of the joint surface, transfer with uneven rolls, machining, laser processing, electric discharge machining, chemical means, etc. are used, and quenching treatment is performed to further enhance the surface hardness. Etc. have been proposed in which the height difference of the unevenness of the joint surface is 0.2 to 1.0 mm and the surface hardness is 250 or more in terms of Vickers hardness (see Patent Document 1). In addition, a plate-shaped joining auxiliary member having blade-like protrusions on both sides is interposed between the base plate and the base material that are installed across the base material, and tightened with high-strength bolts and nuts that pass through them. It is also known that the connection between the base materials is strengthened by fixing the blade-like projections formed on both surfaces of the joining auxiliary member to the joint surfaces of both the accessory plate and the base material. (See Patent Document 2). Further, in that case, by forming the blade-like protrusions formed on both surfaces of the joining auxiliary member with a plurality of blade-like protrusions arranged in parallel in a direction perpendicular to the connecting direction of the base material, There are also known methods for increasing the slip coefficient in the connecting direction of materials.
Japanese Patent No. 3607742 Japanese Patent Publication No. 8-30364

  By the way, a joining auxiliary member provided with engaging portions on both sides is interposed between the base plate and the base material, which are provided straddling between the base materials, and the base plates, the joining auxiliary member, and the base material. When tightening and fixing with bolts and nuts passed through, the auxiliary member for joining cannot be viewed directly from the outside of the accessory plate, and it may move or fall off during work, The burden placed on the worker was also large in order to accurately install each joining auxiliary member at a predetermined position. In particular, there is a problem that the work load is doubled when the direction of installation of the joining auxiliary member is directional.

  In view of the above-described conventional technical situation, the present invention is configured so that each joining auxiliary member can be held at a predetermined position on the accessory plate side by a simple operation. It is an object of the present invention to provide an inter-base material connection technique that can accurately install the auxiliary member for joining at a predetermined position and is effective in maintaining its directionality.

  In order to solve the above-mentioned problem, in the present invention, a plate-shaped joining auxiliary member provided with a locking portion on both surfaces is interposed between the base plate and the base plate that are provided between the base materials, Formed in the joining auxiliary member in the base material connecting structure configured to be fastened by a bolt such as a high-strength bolt penetrated through the accessory plate, joining auxiliary member and the base material, and a nut compatible therewith. A cylindrical fitting member that can be engaged with a peripheral portion of the bolt-penetrating insertion hole, and the cylindrical fitting member is fitted into the bolt-penetrating insertion hole formed in the accessory plate to join the auxiliary member The technical means of attaching to the base material in a state of being held on the side of the accessory plate was adopted. In addition, you may make it form the slit of a vertical direction in the said cylindrical fitting member.

  In the present invention, there is provided a cylindrical fitting member that can be engaged with a peripheral portion of an insertion hole for bolt penetration formed in the auxiliary member for joining, and the insertion for bolt penetration formed on the accessory plate with the cylindrical fitting member. Since it is configured to fit into the hole and hold the joining auxiliary member on the side of the base plate, the bolt and nut are inserted while interposing the auxiliary member for joining between the base plate and the base material in the connection work between the base materials. When tightening and fixing, the individual auxiliary members for joining are held at predetermined positions on the side of the accessory plate by the cylindrical fitting members inserted into the insertion holes for penetrating the bolts. For this reason, the possibility of the joining auxiliary members moving or dropping during the operation is eliminated, and even if the joining auxiliary member cannot be viewed directly from the outside of the accessory plate, it can be used for individual joining. Auxiliary member can be accurately installed at a predetermined position, The work burden on the worker with the strength of the fiscal year can be reliably achieved can be greatly reduced. Further, when the installation of the joining auxiliary member is directional, it is also effective for maintaining the directionality.

  The inter-base material connection technology according to the present invention can be widely applied when base materials such as H-shaped steels constituting beams and columns are connected using bolts and nuts in buildings and bridges. Regarding the locking portions provided on both surfaces of the joining auxiliary member, the locking portions formed at least on the surface of the base material side thereof are configured to bite into the joint surface of the base material and increase the slip coefficient. However, the locking portion formed on the other side of the accessory plate may be configured to increase the slip coefficient by biting into the joining surface of the accessory plate as in the case of the base material side. Alternatively, an engaging portion that can be engaged with the engaging portion is formed in advance on the joining surface on the accessory plate side, and the engaging portion formed on the joining auxiliary member side and the accessory plate side are formed in advance. You may comprise so that a slip coefficient may be increased by engagement with the engaged part made. With regard to the specific shape of the locking portion formed on the joining auxiliary member, in the case of a form in which the slip coefficient is increased by biting into the mating joint surface, the shape of the blade-like projection with a sharp tip or cone The shape is suitable. On the other hand, in the case where the slip coefficient is increased by the engagement between the engaging portion formed on the joining auxiliary member side and the engaging portion formed in advance on the accessory plate side, the erosion is applied to the accessory plate side. Various shapes that can be engaged are possible because there is no need to include. Further, either the locking part or the engaging part may be convex or concave. Further, when adopting a form in which the slip coefficient is increased by engaging the engaging portion formed on the joining auxiliary member side and the engaging portion formed in advance on the accessory plate side, the engaging portions are If a plurality of engaging portions are arranged in parallel in a direction orthogonal to the connecting direction between the base materials, the required directivity is obtained by engaging the engaging portions with the engaging portions. Is determined automatically and accurately, and the slip coefficient in the connecting direction between the base materials can be improved efficiently and reliably. Incidentally, the outer shape of the joining auxiliary member is not limited to an octagon as in the following embodiments, but may be other polygonal or circular shapes such as a quadrangle and a hexagon. Further, it is desirable that the joining auxiliary member has a higher hardness at the portion of the engaging portion that bites into the joining surface on the base material side by quenching treatment or the like. On the other hand, with regard to the accessory plate, if the quenching treatment is not performed, even if there is a slight dimensional difference regarding the thickness of the member or a construction error between the beams when fastening the accessory plate, the auxiliary member for joining, and the base material, deformation Since it is easy to become familiar with, more stable tightening is possible, but it is not limited to them. The cylindrical fitting member may be configured such that its height is set smaller than the thickness of the accessory plate and fits partway through the accessory plate, or is set larger than the thickness of the accessory plate. You may comprise so that the part which protruded on the other side of the board may be crimped. Further, by forming a longitudinal slit in the cylindrical fitting member or a tapered shape, it is possible to easily fit into the insertion hole for penetrating a bolt formed in the accessory plate.

  FIG. 1 is a front view showing a connection state between base materials, and FIG. 2 is a plan view thereof. FIG. 3 is a plan view with the accessory plate removed, and FIG. 4 is a partially enlarged view showing the circle in FIG. In the figure, reference numerals 1 and 2 denote base materials made of H-section steel, which show a state in which the base materials 1 and 2 are connected by the base material connecting structure according to the present invention. As shown in the drawing, for the base material 1 and the base material 2, the attachment plates 7-are in a state straddling between the flange portions 3, 4 of the base material 1 and the flange portions 5, 6 of the base material 2. 10 is attached. As shown in FIGS. 3 and 4, the required number of plate-like plates provided with appropriate locking portions on both sides between the accessory plates 7 to 10 and the flange portions 3 to 6 of the base materials 1 and 2. The joining auxiliary member 11 is interposed, and the accessory plates 7 to 10, the individual joining auxiliary member 11 and the base materials 1 and 2 are fastened and fixed by bolts 12 and nuts 13 penetrating them. It is configured. Further, the web 14 of the base material 1 and the web 15 of the base material 2 are connected to the bolt 17 while interposing a joining auxiliary member similar to the joining auxiliary member 11 using the accessory plate 16 as shown in FIG. And are connected by nuts. FIG. 5 shows a connected state in the case where there is a dimensional difference in the thickness of the flange portion 3 of the base material 1 and the flange portion 5 of the base material 2. Here, the case where the tempering treatment is not applied to the accessory plates 7 to 10 is shown, and the accessory plate 8 is deformed as shown in the figure and is adapted to absorb the dimensional difference between the flange portions 3 and 5, More stable tightening is possible.

  Next, the holding of the joining auxiliary member to the accessory plate side by the cylindrical fitting member, which is a feature of the present invention, will be described with reference to FIGS. FIG. 6 is a plan view of the accessory plate 7, and FIG. In addition, the following description is common also about the attachment plates 8-10. Incidentally, in the case of the accessory plates 7 and 9, the accessory plates 7 and 9 in which the joining auxiliary member 11 is held at a predetermined position by the following procedure are turned upside down in use and the joining auxiliary member 11 is moved downward. In this state, they are attached to the base materials 1 and 2 and are fastened and fixed using bolts 12 and nuts 13. Thus, in the figure, 18 is an insertion hole for the bolt 12 formed in the accessory plate 7. FIGS. 1 to 3 illustrate the case where a total of 12 bolts 12 are used, but here a total of 16 bolts are used. The case of doing was illustrated. FIG. 8 is a plan view showing a state where the same number of auxiliary members for joining 11 are placed in correspondence with the respective insertion holes 18 formed in the accessory plate 7, and FIG. 9 is a partially enlarged longitudinal sectional view thereof. As shown in the figure, each joining auxiliary member 11 in the present embodiment is made of an octagon that is slightly flattened, and by bringing the parallel sides located on both sides in the longitudinal direction into contact with each other between adjacent ones, The installation direction of the joining auxiliary member 11 can be restricted, and the joining auxiliary member 11 can be prevented from being rotated when the bolt 12 is tightened. An insertion hole 19 having the same or slightly larger diameter as the insertion hole 18 formed in the accessory plate 7 is formed at the center of the auxiliary joining member 11. The step part 20 which hooks and supports the collar part formed in the one edge part of the shape fitting member is formed. As shown in the drawing, in the present embodiment, as the locking portions provided on both surfaces of the joining auxiliary member 11, a plurality of protrusions 21 arranged in parallel in a direction perpendicular to the connecting direction of the base materials 1 and 2 are provided. The case of forming was shown. Incidentally, the protrusion 21 formed on the side of the accessory plate 7 of the auxiliary member 11 for bonding is enlarged, and an engagement concave portion that engages with the protrusion 21 is formed on the joint surface of the accessory plate 7 so that both are engaged. If comprised, even if it does not use the octagonal joining auxiliary member 11 as described above, the directionality of the joining auxiliary member 11 can be accurately maintained, and it is also possible to prevent rotation. Further, if one side of the joining auxiliary member 11 has such a large projection, the contact area with the accessory plate 7 can be increased, so that the projection formed on the other surface can be stabilized. It is valid.

  FIG. 10 is a plan view showing a state in which the cylindrical fitting member 22 is inserted into the insertion hole 19 of each joining auxiliary member 11 placed corresponding to each insertion hole 18 formed in the accessory plate 7. FIG. 11 is a partially enlarged longitudinal sectional view of FIG. 11, and FIG. 12 is a partially enlarged longitudinal sectional view of the part further enlarged. As illustrated, in the present embodiment, the case where the cylindrical fitting member 22 is inserted halfway through the insertion hole 18 formed in the accessory plate 7 is shown. As shown in FIG. 12, a flange 23 is formed at one end of the cylindrical fitting member 22, and is hooked and supported by the stepped portion 20 in a state of being inserted into the insertion holes 18 and 19. It is configured as follows. FIG. 13 is a longitudinal sectional view showing another embodiment relating to the cylindrical fitting member. The cylindrical fitting member 24 according to this embodiment is provided with a slit 25 and is fitted into the insertion holes 18 and 19. It is intended to facilitate the operation. In addition, the cylindrical fitting member 26 according to the embodiment shown in FIG. 14 is lowered by caulking a portion that penetrates the insertion hole 18 and protrudes to the opposite side of the accessory plate 7 by increasing its height. Further, the flange portion 27 can be formed, and by engaging the flange portion 27 with the step portion 28 formed on the accessory plate 7, the auxiliary joining member 11 is more firmly held with respect to the accessory plate 7. It is configured to obtain.

It is the front view which showed the connection state between base materials. It is the top view which showed the connection state between the base materials. It is the top view which removed the attachment plate and showed the connection state between the base materials. It is the elements on larger scale which showed the circle in FIG. It is the elements on larger scale which showed the connection state in case there exists a dimensional difference in the thickness of the flange part of a base material. It is the top view which showed the accessory plate. It is AA sectional drawing of the attachment board. It is the top view which showed the state which mounted the auxiliary member for joining on the attachment board. FIG. 9 is a partially enlarged longitudinal sectional view of FIG. 8. It is the top view which showed the state which inserted the cylindrical fitting member with respect to the insertion hole of the auxiliary member for joining. It is a partial expanded longitudinal cross-sectional view of FIG. FIG. 12 is a partially enlarged longitudinal sectional view further enlarging FIG. 11. It is the longitudinal cross-sectional view which showed the other Example regarding a cylindrical fitting member. It is the longitudinal cross-sectional view which showed the insertion state of the other Example regarding a cylindrical fitting member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 ... Base material, 3-6 ... Flange part, 7-10 ... Substrate, 11 ... Joining auxiliary member, 12 ... Bolt, 13 ... Nut, 14, 15 ... Web, 16 ... Substrate, 17 ... Bolt , 18, 19 ... insertion hole, 20 ... step, 21 ... projection, 22 ... cylindrical fitting member, 23 ... collar, 24 ... cylindrical fitting member, 25 ... slit, 26 ... cylindrical fitting member, 27 ... buttocks, 28 ... step

Claims (3)

  A plate-shaped joining auxiliary member provided with a locking portion on both sides is interposed between the base plate and the base material that are provided straddling between the base materials. A cylindrical fitting member that can be engaged with a peripheral portion of the insertion hole for penetrating the bolt formed in the auxiliary member for joining in a base metal connecting structure configured to be fastened and fixed by a bolt and a nut that are penetrated through the material. The cylindrical fitting member is fitted into the insertion hole for penetrating the bolt formed in the accessory plate, and the auxiliary member for joining is attached to the base material while being held on the accessory plate side. A connecting structure between base materials characterized by comprising.   A plate-shaped joining auxiliary member provided with a locking portion on both sides is interposed between the base plate and the base material that are provided straddling between the base materials. A joining auxiliary member used for a base metal connecting structure configured to be fastened and fixed by bolts and nuts penetrated through the material, and a peripheral edge portion of the insertion hole for the bolt penetration formed at the center thereof A joining auxiliary member for a base-material connection structure, comprising: a cylindrical fitting member that can be engaged with a bolt and can be inserted into a bolt-penetrating insertion hole formed in the accessory plate. The joining auxiliary member for a base material connecting structure according to claim 2, wherein a longitudinal slit is formed in the tubular fitting member.

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