JP6990601B2 - Reinforcing structure and reinforcing members of a structure consisting of columns and beams - Google Patents

Description

The present invention relates to a reinforcing structure of a structure in which a reinforcing member is fixed to a structure composed of columns and beams.

Conventionally, there is a method of reinforcing a structure by diagonally fixing a reinforcing member to a structure composed of columns and beams, such as a cane or a brace. For example, an existing structure can be reinforced by fixing a reinforcing member to an existing column or beam. Such reinforcing members are joined to columns and beams by welding, for example.

Further, there is a method of fixing the reinforcing member to the flange portion of a column or beam made of H-shaped steel by a plate instead of welding (Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-1777797

However, when welding reinforcing members to columns and beams, for example, at high places, beads and the like may scatter at high places, and during welding work, other work may be performed in parallel below. It cannot be done and work efficiency is poor. In addition, welding work cannot be performed in factories where fire is strictly prohibited.

On the other hand, according to the method of fixing the reinforcing member to the column or the beam without performing welding as in Patent Document 1, the above-mentioned problem can be avoided. However, if the reinforcing member is fixed to the flange portion of the H-shaped steel as in Patent Document 1, the flange portion may be deformed when a force is applied, and the force may not be sufficiently transmitted between the column and the beam. There is. In addition, since a large number of bolts are used, a large amount of work time is required for fixing.

The present invention has been made in view of such a problem, and provides a reinforcing structure and a reinforcing member of a structure which is excellent in workability and can efficiently reinforce a structure composed of columns and beams. The purpose.

In order to achieve the above-mentioned object, the first invention is a reinforcing structure of a structure composed of columns and beams, which comprises a stress transmission member and an end member provided at at least one end of the stress transmission member. The end member and a reinforcing metal fitting that can be fixed with a bolt are provided, and at least one of the pillar or the beam is made of H-shaped steel, and the reinforcing metal fitting has a first fixing portion and the first fixing portion. It has a second fixing portion formed at a predetermined angle with respect to the above, and at least a pair of the reinforcing metal fittings are arranged so as to sandwich the web of the H-shaped steel in the first fixing portion. The reinforcing metal fitting and the end are fixed to the column or the beam with bolts, and one flange of the H-shaped steel is sandwiched between the second fixing portion of the reinforcing metal fitting and the end member. The members are joined by bolts, and the vicinity of the intersection between the first fixing portion and the second fixing portion comes into contact with the vicinity of the intersection between the web of the H-shaped steel and the flange, and the second A gap is formed between the tip end side of the fixed portion and the flange, the stress transmitting member is arranged obliquely with respect to the column or the beam, and the other end of the stress transmitting member is the column or the beam. It is a reinforcing structure of a structure characterized by being fixed to the beam or the floor portion.

It is desirable that the end member and the second fixing portion project outward from the flange and are joined by bolts at the projecting portion.

The second fixing portion and the end member project outward from the flange, the end member and the second fixing portion are joined by bolts at the overhanging portion, and the second fixing portion is formed at the overhanging portion. And on at least one of the end members, a protruding portion is formed so as to project in the direction of the second fixed portion or the end member facing each other, and the distance between the second fixed portion and the end member in the protruding portion is set. , May be smaller than the thickness of the flange.

In this case, it is desirable that the distance between the second fixing portion and the end member in the protruding portion is smaller than the gap between the tip end side of the second fixing portion and the flange.

In the overhanging portion, a spacer may be arranged between the second fixing portion and the end member.

It is desirable that the distance between the spacer and the second fixing portion is smaller than the gap between the tip end side of the second fixing portion and the flange.

The end members are provided at both ends of the stress transfer member, one end of the stress transfer member is fixed to the column by the reinforcing metal fitting, and the other end of the stress transmission member is fixed to the column by the reinforcing metal fitting. It may be fixed to the beam.

The bolt that penetrates the web and fixes the first fixing portion to the pillar or the beam may be a bolt having a smaller diameter than the bolt that joins the end member and the second fixing portion.

The number of bolts that penetrate the web and fix the first fixing portion to the pillar or the beam may be less than the number of bolts that join the end member and the second fixing portion.

According to the first invention, the reinforcing metal fittings are fixed with bolts so as to sandwich the web of the H-shaped steel, and the reinforcing metal fittings and the stress transmission member are joined by bolts, so that welding work is not required.

Further, the force from the stress transmission member is directly applied to the web by contacting the vicinity of the intersection between the first fixing portion and the second fixing portion of the reinforcing metal fitting with the vicinity of the intersection between the web of the H-shaped steel and the flange. Since it is transmitted, the force can be reliably transmitted to the column or beam. In particular, if a gap is formed between the tip end side of the second fixing portion and the flange, the force is not directly transmitted to the flange, so that deformation of the flange or the like can be suppressed.

Further, since the end member and the second fixing portion are joined by bolts on the outer side of the flange, it is not necessary to provide a bolt hole in the flange.

Further, in the overhanging portion, a protruding portion is formed on at least one of the second fixing portion and the end member, and the distance between the two in the protruding portion is made smaller than the thickness of the flange, so that the exposed length of the bolt in the overhanging portion is shortened. can do. That is, the length of the bolt that is not constrained by the second fixing portion or the end member can be shortened. Therefore, even when a force is applied in a direction in which the second fixing portion and the end member are displaced in parallel with each other and a shearing force is applied to the bolt, the deformation of the bolt can be suppressed.

Further, by making the distance between the second fixing portion and the end member in the protruding portion smaller than the gap between the tip end side of the second fixing portion and the flange, the second fixing portion is used when the bolt is tightened. It is possible to secure a gap 29 between the tip end side of the fixed portion and the flange, and it is possible to reliably transfer stress between the second fixed portion and the H-shaped steel.

Further, even if a spacer is arranged between the second fixing portion and the end member, the exposed length of the bolt in the overhanging portion can be shortened.

Also in this case, the distance between the spacer and the second fixing portion is made larger than the gap between the tip end side of the second fixing portion and the flange, so that when the bolt is tightened, the second fixing portion is used. It is possible to secure a gap 29 between the tip end side of the fixed portion and the flange, and it is possible to reliably transfer stress between the second fixed portion and the H-shaped steel.

Further, by fixing the end members to both ends of the stress transmission member, one end of the stress transmission member is fixed to the column by the reinforcing metal fitting, and the other end of the stress transmission member is fixed to the beam by the reinforcing metal fitting. , The reinforcing member can function as a cane.

Further, by making the bolt for fixing the web and the first fixing portion a bolt having a smaller diameter than the bolt for joining the end member and the second fixing portion, it is possible to reduce the size of the bolt hole formed in the web. can. Therefore, the decrease in the strength of the web can be minimized.

Similarly, even if the number of bolts for fixing the web and the first fixing portion is smaller than the number of bolts for joining the end member and the second fixing portion, the bolt holes formed in the web are made smaller. be able to. Therefore, the decrease in the strength of the web can be minimized.

The second invention comprises a stress transmission member, an end member provided at at least one end of the stress transmission member, and a reinforcing metal fitting that can be fixed to the end member with a bolt. It has a first fixing portion and a second fixing portion formed at a predetermined angle with respect to the first fixing portion, orthogonal to the first fixing portion, and with the first fixing portion. A gap is formed between the virtual line and the second fixed portion without contacting the tip end side of the second fixed portion with respect to the virtual line passing through the intersection with the second fixed portion. It is a reinforcing member characterized by the fact that.

The second fixing portion has a protruding portion protruding to the opposite side of the first fixing portion on the bottom surface near the end portion on the opposite side of the intersection with the first fixing portion. Through holes for bolts may be formed in the protrusions.

According to the second invention, it is possible to obtain a reinforcing member which is excellent in workability and can efficiently reinforce an existing structure.

Further, by forming the protruding portion in the second fixing portion, the gap between the end member and the end member can be reduced when the portion is fixed to the flange portion. Therefore, the length of the bolt exposed between the second fixing portion and the end member can be shortened.

According to the present invention, it is possible to provide a reinforcing structure and a reinforcing member of a structure which is excellent in workability and can efficiently reinforce a structure composed of columns and beams.

The perspective view which shows a part of the reinforcement structure 1 of a structure. The perspective view which shows the reinforcing metal fitting 15. The cross-sectional view which shows the mounting state of the reinforcing member 10. Front view of the reinforcing structure 1 of the structure. Front view of the reinforcing structure 1a of the structure. Front view of the reinforcing structure 1b of the structure. The cross-sectional view which shows the mounting state of the reinforcing metal fitting 15a. The cross-sectional view which shows the mounting state of the reinforcing metal fitting 15b. FIG. 2 is a cross-sectional view showing another mounting state of the reinforcing metal fitting 15b. FIG. 2 is a cross-sectional view showing another mounting state of the reinforcing metal fitting 15f. The front view which shows the mounting state of the reinforcing metal fitting 15c. (A) is a front view showing an attached state of the reinforcing metal fitting 15 g, and (b) is a plan view showing a spacer 33a. The front view which shows the mounting state of the reinforcing metal fitting 15d. The perspective view which shows the reinforcing metal fitting 15e. The front view which shows the mounting state of the reinforcing metal fitting 15e.

Hereinafter, the reinforcing structure 1 of the structure according to the embodiment of the present invention will be described. FIG. 1 is a perspective view showing a part of the reinforcing structure 1 of the structure. The reinforcing structure 1 of the structure is a reinforcing structure for the structure including the columns 3 and the beams 5.

The pillar 3 and the beam 5 are H-shaped steel, and are composed of a web 9 and flanges 7a and 7b provided at both ends of the web 9, respectively. In the vicinity of the joint between the column 3 and the beam 5, the reinforcing member 10 is fixed diagonally to the column 3 and the beam 5.

The reinforcing member 10 includes a stress transmission member 11, an end member 13, a reinforcing metal fitting 15, and the like. For example, a plate-shaped end member 13 is joined to both ends of the rod-shaped stress transmitting member 11. The end members 13 at both ends of the stress transfer member 11 are joined in a direction substantially orthogonal to each other. The end member 13 does not have to be plate-shaped, and may be, for example, cast steel having a predetermined shape. Further, the stress transmission member 11 and the end member 13 may be integrally formed, or the stress transmission member 11 and the end member 13 may be formed and joined separately. Further, the stress transmission member 11 may be composed of a plurality of divided members, and similarly, the end member 13 may be composed of a plurality of divided members.

Reinforcing metal fittings 15 are fixed to the columns 3 and beams 5 with bolts 21a, respectively. Further, the respective reinforcing metal fittings 15 fixed to the columns 3 and the beams 5 and the end members 13 are joined by bolts 21b, respectively. That is, the column 3 and the beam 5 are connected by the reinforcing member 10.

FIG. 2 is an enlarged perspective view of the reinforcing metal fitting 15. The reinforcing metal fitting 15 has a fixing portion 19a which is a first fixing portion and a fixing portion 19b which is a second fixing portion. The fixed portions 19a and 19b are substantially orthogonal to each other. Further, as shown in the figure, the plate-shaped fixing portions 19a and 19b are joined by a pair of substantially triangular side plates in the vicinity of both ends in the width direction of the fixing portions 19a and 19b. The fixing portion 19a is provided with a hole 23a through which the bolt 21a is inserted. Further, the fixing portion 19b is provided with a hole 23b through which the bolt 21b is inserted.

FIG. 3 is a cross-sectional view of the reinforcing member 10 fixed to the beam 5. Since the fixing structure of the reinforcing member 10 to the column 3 is the same, only the fixing structure to the beam 5 will be described, and the description of the fixing state to the column 3 will be omitted. The pair of reinforcing metal fittings 15 are arranged to face each other so as to sandwich the web 9 of the beam 5 by the fixing portions 19a of each other. A hole 25 is formed in the beam 5, and the hole 23a of the pair of reinforcing metal fittings 15 and the hole 25 of the web 9 are arranged so as to be aligned in a straight line. Bolts 21a are inserted into the holes 23a and 25. The reinforcing metal fitting 15 is fixed to the web 9 of the beam 5 by the bolt 21a.

The fixing portion 19b of the reinforcing metal fitting 15 projects to the outside of the flange on both sides of the flange 7b (the flange on the column 3 side to be connected). The hole 23b of the fixing portion 19b is arranged outside the flange 7b. The end member 13 is arranged at a portion facing the fixing portion 19b so as to sandwich the flange 7b. A hole 23c is formed in the end member 13, and a bolt 21b is inserted into the holes 23b and 23c. That is, one flange 7b of the beam 5 is sandwiched between the fixing portion 19b of the reinforcing metal fitting 15 and the end member 13, and the fixing portion 19b and the end member 13 are joined by bolts 21b at the outer overhanging portion of the flange 7b. .. An adhesive may be further applied between the end member 13 and the flange 7b to bond them.

Here, the outer surface (corner portion) in the vicinity of the intersection between the fixing portion 19a and the fixing portion 19b of the reinforcing metal fitting 15 comes into contact with the vicinity of the intersection (A in the figure) between the web 9 of the beam 5 and the flange 7b. When the vicinity of the intersection between the web 9 and the flange 7b of the beam 5 has a fillet shape, the outer surface shape of the corner portion between the fixing portion 19a and the fixing portion 19b of the reinforcing metal fitting 15 is also a shape corresponding to the fillet shape. May be good.

The reinforcing metal fitting 15 and the beam 5 come into contact with each other in the vicinity of the intersection (outer surface of the corner) between the fixing portion 19a and the fixing portion 19b and in the vicinity of the intersection A between the web 9 and the flange 7b, so that the reinforcing metal fitting 15 is applied to the reinforcing metal fitting 15. Power can be received on the Web 9. For example, when the stress transmission member 11 is pulled in the direction of the column 3 (lower in the figure), the tensile force from the stress transmission member 11 is transmitted to the reinforcing metal fitting 15 via the end member 13, but the reinforcing metal fitting 15 is used. The force from is received near the intersection of the web 9 and the flange 7b and is supported by the web 9.

Further, the stress transmission member 11 is joined to substantially the center of the end member 13 in the width direction. That is, the central axis of the stress transmission member 11 is located on the extension line of the web 9. Therefore, for example, when the stress transmission member 11 is compressed from the direction of the pillar 3 (lower part in the figure), the compressive force from the stress transmission member 11 is received by the web 9 via the end member 13.

As described above, the transmission of the force from the reinforcing metal fitting 15 to the beam 5 is not due to the frictional force between the fixing portion 19a and the web 9. Therefore, the bolt 21a does not need an axial force sufficient to exert a frictional force between the fixing portion 19a and the web 9. That is, the bolt 21a may have an axial force that can prevent the upper portion of the pair of reinforcing metal fittings 15 from opening when the tensile force is transmitted from the stress transmission member 11 to the position of the bolt 21b of the reinforcing metal fitting 15.

Here, with reference to the intersection A of the web 9 and the flange 7b, the distance of the reinforcing metal fitting 15 from the contact portion with A to the hole 23c is a, and the distance from A to the hole 23a is b. Assuming that the force of T1 is applied downward to the reinforcing metal fitting 15 at the position of the hole 23c, the force for holding the reinforcing metal fitting 15 in the web 9 direction at the position of the hole 23a (opposing the opening of the reinforcing metal fitting 15). Force) T2 may be (a / b) · T1 or more. Therefore, if the distance b can be made larger than the distance a, T2 can be made smaller than T1. Therefore, the bolt 21a that penetrates the web 9 and fixes the fixing portion 19a to the beam 5 can be a bolt having a smaller diameter than the bolt 21b that joins the end member 13 and the fixing portion 19b. Therefore, the hole 25 formed in the web 9 can be made small in diameter, and the decrease in strength of the web 9 due to the hole 25 can be minimized.

The farther the position of the hole 25 is from the intersection A of the web 9 and the flange 7b (the closer it is to the flange 7a), the larger the distance b described above, so that T2 with respect to T1 can be reduced. On the other hand, if the position of the hole 25 is arranged too high, it is necessary to lengthen the fixing portion 19a, so that the reinforcing metal fitting 15 becomes large and there is a problem of weight increase. Therefore, the position of the hole 25 may be set according to the diameter of the bolt 21a to be applied.

Further, as the position of the hole 23c is closer to the intersection A of the web 9 and the flange 7b, the distance a described above becomes smaller, so that T2 with respect to T1 can be made smaller. In this case, a hole may be provided in the flange 7b so that the bolt 21b can penetrate the flange 7b.

Further, as shown in FIG. 1, in the present embodiment, two reinforcing metal fittings 15 are provided side by side, and the web 9 is sandwiched between the respective reinforcing metal fittings 15. That is, two pairs of reinforcing metal fittings 15 are fixed to the beam 5. In this way, by using a plurality of pairs of reinforcing metal fittings 15, each reinforcing metal fitting 15 can be miniaturized. When a plurality of pairs of reinforcing metal fittings 15 are used, all the reinforcing metal fittings 15 are collectively fixed to one end member 13 by using the end member 13 having a size that includes all the reinforcing metal fittings 15. It is possible to uniformly transmit the force to all the reinforcing metal fittings 15.

Further, as described above, the bolt 21a for joining to the web 9 does not require a large axial force. Therefore, for example, the fixed portion 19a may have a hem-spreading shape from the upper portion toward the fixed portion 19b side, and the fixed portion 19b may be wider than the upper portion of the fixed portion 19a. By doing so, a plurality of bolts 21b can be provided side by side in the fixing portion 19b. That is, the number of bolts 21a for fixing the reinforcing metal fitting 15 to the web 9 may be one, and the number of bolts 21b to be joined to the end member 13 may be one.

In this way, by reducing the number of bolts 21a that join the fixing portion 19a and the web 9 to be smaller than those of the bolts 21b, the hole 25 formed in the web 9 can be made smaller in diameter, and the strength of the web 9 due to the hole 25 can be reduced. The drop can be minimized. On the other hand, by increasing the number of bolts 21b that join the fixing portion 19b and the end member 13, stress can be reliably transmitted between the end member 13 and the stress transmission member 11.

FIG. 4 is an overall view of the reinforcing structure 1 of the structure. The reinforcing member 10 is arranged at each corner of a substantially rectangular structure composed of columns 3 and beams 5. In this case, the stress transmission member 11 is arranged obliquely with respect to the column 3 and the beam 5, and the end members 13 are fixed to both ends of the stress transmission member 11. Further, the end member 13 at one end of the stress transmission member 11 is fixed to the column 3 by the reinforcing metal fitting 15, and the end member 13 at the other end of the stress transmission member 11 is fixed to the beam 5 by the reinforcing metal fitting 15. Will be done.

According to the reinforcing structure 1 of such a structure, the reinforcing member 10 can function as a cane to be joined to the column 3 and the beam 5. The reinforcing member 10 may not be arranged at all the corners surrounded by the columns 3 and the beams 5, and may be a part thereof.

The stress transmission member 11 does not have to be rod-shaped as in the reinforcing structure 1a of the structure shown in FIG. In the reinforcing structure 1a of the structure, the stress transmission member 11 is made of a substantially triangular member so that one side surface is in contact with the column 3 and the other side surface orthogonal to the column 3 is in contact with the beam 5. As described above, the shape of the stress transmission member 11 is not limited as long as it is arranged between the pillar 3 and the beam 5 to be connected and the stress from one of the two can be transmitted to the other. Even in this case, the stress transmission member 11 and the end member 13 may be integrally formed, or the stress transmission member 11 and the end member 13 may be formed and joined separately.

Further, the reinforcing member 10 may function as a brace as in the reinforcing structure 1b of the structure shown in FIG. In this case, the reinforcing member 10 is arranged in an inverted V shape inside a substantially rectangular shape composed of the columns 3 and the beams 5. In this case, the stress transmission member 11 is arranged obliquely with respect to the column 3 and the beam 5, the end member 13 is fixed to one end of the stress transmission member 11, and the end member 13 is fixed to the beam 5 by the reinforcing metal fitting 15. Further, the other end portion of the stress transmission member 11 is fixed to the floor portion 27 by another fixing member.

As described above, in the present invention, if the end member 13 is fixed to at least one end of the stress transmission member 11 and fixed to at least one of the column 3 or the beam 5 via the reinforcing metal fitting 15, the other end is fixed. , May be fixed to a portion such as the floor portion 27. In this case, only the column 3 or the beam 5 to which the reinforcing metal fitting 15 is fixed may be H-shaped steel. That is, if at least one of the column 3 or the beam 5 is made of H-shaped steel and at least one end of the stress transmitting member 11 is joined to the H-shaped steel via the reinforcing metal fitting 15, the other end of the stress transmitting member 11 is joined. May be joined to a portion other than the H-shaped steel. Further, when fixing the stress transmission member 11 to the object at a low place such as the floor portion 27, welding can also be used.

As described above, according to the present embodiment, the reinforcing member 10 can be fixed to the column 3 or the beam 5 without using welding. Further, since the force from the stress transmission member 11 can be received by the web 9 starting from the vicinity of the intersection between the flange 7b and the web 9 instead of the flange 7b of the H-shaped steel, the deformation of the flange 7b can be suppressed. can. Further, since the force from the stress transmission member 11 is not transmitted to the flange 7b, the number of bolts 21b used for joining the fixing portion 19b and the end member 13 can be reduced.

Further, since the fixing portion 19a and the web 9 do not transmit a force by friction, the bolt 21a can have a small diameter with a small axial force. Therefore, the hole 23a can have a small diameter.

Further, by arranging the bolt 21b on the outside of the flange 7b, it is not necessary to drill a hole in the flange 7b.

Further, since the reinforcing metal fitting 15 can be installed from the side surface of the pillar 3 or the beam 5, for example, when there is a wall on the back side of the pillar 3, or where there is a ceiling or floor on the upper and lower surfaces of the beam 5. It is also applicable to. Therefore, it can be easily applied to the existing columns 3 and beams 5.

Next, the second embodiment will be described. FIG. 7 is a cross-sectional view showing a structure for fixing the reinforcing member 10a to the beam 5 according to the second embodiment. In the following description, the same reference numerals as those in FIGS. 1 to 3 will be given to the configurations having the same functions as the reinforcing member 10, and duplicate description will be omitted.

The reinforcing member 10a has substantially the same configuration as the reinforcing member 10, but differs in that the reinforcing metal fitting 15a is used. The reinforcing metal fitting 15a has a different form of the fixing portion 19b from the reinforcing metal fitting 15. The lower surface of the fixed portion 19b is set at a slightly acute angle without being completely orthogonal to the fixed portion 19a. Therefore, the outer surface in the vicinity of the intersection with the fixing portions 19a and 19b is in contact with the vicinity of the intersection between the web 9 and the flange 7b (A in the figure), but the tip end side of the fixing portion 19b is between the flange 7b. A gap 29 is formed in the space. That is, there is a gap between the virtual line and the fixed portion 19b without contacting the tip end side of the fixed portion 19b with respect to the virtual line orthogonal to the fixed portion 19a and passing through the intersection of the fixed portion 19a and the fixed portion 19b. 29 is formed. As described above, an adhesive may be further applied between the end member 13 and the flange 7b.

The contact position between the reinforcing metal fitting 15a and the beam 5 can be, for example, in the range of 2 to 3 times or less the plate thickness of the web 9 to the web 9. Further, it is desirable that a gap 29 is formed on the tip end side of the flange 7b in a range of at least 1/2 or more of the length from the web 9 (base of the flange 7b) to the tip end of the flange 7b.

In order to form the gap 29, the fixed portion 19b having the same thickness may be joined to the fixed portion 19a at an angle of less than 90 degrees. Further, the fixed portion 19b and the fixed portion 19a may be joined substantially vertically, and a tapered shape or a stepped shape may be formed on the lower surface of the fixed portion 19b.

According to the second embodiment, the same effect as that of the first embodiment can be obtained. Further, since the gap 29 is formed between the fixed portion 19b and the flange 7b, particularly on the tip end side of the flange 7b, it is possible to more reliably suppress the transmission of the force from the fixed portion 19b to the flange 7b. Can be done.

Next, a third embodiment will be described. FIG. 8 is a cross-sectional view showing a structure for fixing the reinforcing member 10b to the beam 5 according to the third embodiment. The reinforcing member 10b has substantially the same configuration as the reinforcing member 10a, except that the reinforcing metal fitting 15b is used. The form of the fixing portion 19b of the reinforcing metal fitting 15b is different from that of the reinforcing metal fitting 15a.

As described above, the fixing portion 19b and the end member 13 project outward from the flange 7b, and the end member 13 and the fixing portion 19b are joined by bolts 21b at the projecting portion. In the overhanging portion, the fixing portion 19b is formed with a protruding portion 31 projecting in the direction of the opposite end member 13. That is, the fixed portion 19b has a protruding portion 31 protruding to the opposite side of the fixed portion 19a on the bottom surface near the end portion on the opposite side of the intersection with the fixed portion 19a. A hole 23b is formed in the protrusion 31.

By forming the protrusion 31, the gap between the protrusion 31 and the end member 13 becomes smaller than the thickness of the flange 7b. Here, it is desirable that a gap 29a is formed between the fixing portion 19b and the end member 13 in the protruding portion 31. By doing so, for example, due to the thickness variation of the fixed portion 19b or the end member 13 in the protruding portion 31, the fixed portion 19b and the end member 13 in the protruding portion 31 come into contact with each other, and the bolt 21b cannot be tightened. Can be prevented.

Further, the size of the gap 29a between the fixed portion 19b and the end member 13 in the protruding portion 31 (C in the figure) is the size of the gap 29 between the tip end side of the fixed portion 19b and the flange 7b (B in the figure). It is desirable that it is smaller than. By doing so, even when the bolt 21b is tightened and the fixing portion 19b in the protruding portion 31 and the end member 13 come into contact with each other, a gap 29 between the tip end side of the fixing portion 19b and the flange 7b is secured. Can be done. Therefore, stress can be reliably transmitted between the tip end side of the fixing portion 19b and the flange 7b. The gap 29a may be omitted. That is, the fixing portion 19b and the end member 13 may come into contact with each other. As described above, the distance between the fixing portion 19b and the end member 13 may be 0.

As shown in FIG. 9, instead of providing the protruding portion 31 only on the fixed portion 19b, the protruding portion 31a may be formed on the end member 13a so as to project in the direction of the facing fixed portion 19b. Even in this case, it is desirable to form a gap 29a between the fixing portion 19b and the end member 13a in the protruding portions 31 and 31a so that the gap 29a is smaller than the gap 29 between the tip end side of the fixing portion 19b and the flange 7b. In this way, if the fixing portion 19b and the end member 13, 13a are formed with the protrusions 31, 31a protruding in the direction of the opposite fixing portion 19b or the end member 13, 13a, the above-mentioned effect can be obtained. Can be done.

According to the third embodiment, the same effect as that of the second embodiment can be obtained. Further, if the fixing portion 19b and the end member 13 are formed with the projecting portions 31, 31a protruding in the direction of the opposite fixing portion 19b or the end members 13, 13a, the fixing portion 19b or the end member 13, 13a can be used. The exposed length of the unconstrained bolt 21b can be shortened, and the deformation of the bolt 21b due to the shearing force can be suppressed.

In particular, the bolt 21b is sufficiently tightened by making the gap 29a between the fixing portion 19b and the end members 13 and 13a in the protruding portion 31 smaller than the gap 29 between the tip end side of the fixing portion 19b and the flange 7b. However, the stress can be reliably transmitted between the tip end side of the fixing portion 19b and the flange 7b.

Next, a fourth embodiment will be described. FIG. 10 is a cross-sectional view showing a structure for fixing the reinforcing member 10f to the beam 5 according to the fourth embodiment. The reinforcing member 10f has substantially the same configuration as the reinforcing member 10a and the like, but differs in that the reinforcing metal fitting 15f and the spacer 33 are used. The reinforcing metal fittings 15f do not have protrusions formed with respect to the reinforcing metal fittings 15a and 15b.

The spacer 33 is a cylindrical member having a through hole, and a bolt 21b is inserted through the through hole. A female screw may be provided on the inner surface of the spacer 33 and screwed with the bolt 21b. Further, it may be a member having a C-shaped cross section with one opening instead of a cylindrical shape. It is desirable that the size of the gap 29a between the spacer 33 and the fixing portion 19b is smaller than the size of the gap 29 between the tip end side of the fixing portion 19b and the flange 7b. By doing so, even when the bolt 21b is tightened and the fixing portion 19b and the end member 13 come into contact with each other via the spacer 33, a gap 29 is secured between the tip end side of the fixing portion 19b and the flange 7b. be able to. Therefore, stress can be reliably transmitted between the tip end side of the fixing portion 19b and the flange 7b. The gap 29a may be omitted.

Next, still another embodiment will be described. FIG. 11 is a cross-sectional view showing a structure for fixing the reinforcing member 10c to the beam 5. The reinforcing member 10c has substantially the same configuration as the reinforcing member 10b, except that the reinforcing metal fitting 15c is used. In the reinforcing metal fitting 15c, the arrangement of the bolts 21a and 21b is different from that of the reinforcing metal fitting 15b. In this way, a plurality of bolts 21a and 21b may be arranged.

Further, in this case as well, a spacer may be used instead of the protruding portion 31. FIG. 12A is a cross-sectional view showing a structure in which the reinforcing member 10 g is fixed to the beam 5. The reinforcing member 10g has substantially the same configuration as the reinforcing member 10f, but differs in that the reinforcing metal fitting 15g is used. In the reinforcing metal fitting 15g, the arrangement of the bolts 21a and 21b is different from that of the reinforcing metal fitting 15f. Further, it is different in that the spacer 33a is used instead of the spacer 33.

FIG. 12B is a plan view showing the spacer 33a. The spacer 33a has the same function as the spacer 33, but has a plurality of C-shaped notches. As described above, the spacer 33a having a plurality of notches can be used according to the number of bolts 21b. Also in this case, a plurality of through holes may be formed, or a spacer 33 may be used for each bolt 21b.

Further, the reinforcing member 10d shown in FIG. 13 has substantially the same configuration as the reinforcing member 10c, but differs in that the reinforcing metal fitting 15d is used. In the reinforcing metal fittings 15c, the fixing portions 19a and 19b are joined to each other by a pair of substantially triangular side plates at both ends in the width direction, but in the reinforcing metal fittings 15d, the fixing portions 19a and 19b are arranged substantially in the center. It is joined by a substantially triangular plate material. In this way, the form of the member that connects and reinforces the fixed portions 19a and 19b does not matter.

14 is a perspective view showing the reinforcing metal fitting 15e, and FIG. 15 is a front view showing an attached state of the reinforcing member 10e using the reinforcing metal fitting 15e. The reinforcing metal fitting 15e is, for example, a casting, and is not formed by joining the above-mentioned plate members. As described above, the fixing portions 19a and 19b do not have to be plate-shaped, and the fixing portion 19a, the fixing portion 19b, and a portion connecting the two may be integrally formed. For example, in the reinforcing metal fitting 15e, the wall thickness of the portion to which a larger stress is applied can be increased to increase the rigidity, and the portion having a small stress can be made thinner to reduce the weight.

As described above, various forms of the reinforcing metal fitting can be applied. The above-described embodiments can be combined with each other. For example, in FIGS. 11 to 15, the protrusion 31 is not always necessary, and the protrusion 31a may be formed in place of or in addition to the protrusion 31, and spacers 33 and 33a may be used.

Although the embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention does not depend on the above-described embodiments. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical ideas described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs to.

1, 1a, 1b ……… Reinforcing structure of structure 3 ………… Column 5 ………… Beams 7a, 7b ………… Flange 9 ………… Web 10, 10a, 10b, 10c, 10d, 10e, 10f, 10g ……… Reinforcing member 11 ……… Stress transmitting member 13, 13a ……… End member 15, 15a, 15b, 15c, 15d, 15e, 15f, 15g ……… Reinforcing metal fittings 19a, 19b ……… Fixing portion 21a, 21b ………… Bolts 23a, 23b, 23c, 25 ………… Holes 27 ………… Floor 29, 29a ………… Gap 31, 31a ………… Protruding parts 33, 33a ………… Spacer

Claims (11)

It is a reinforcing structure of a structure consisting of columns and beams.
With stress transfer members
An end member provided at at least one end of the stress transmission member and
Reinforcing metal fittings that can be fixed with the end members and bolts,
Equipped with
At least one of the columns or beams is made of H-section steel
The reinforcing metal fitting has a first fixing portion and a second fixing portion formed at a predetermined angle with respect to the first fixing portion.
At least a pair of the reinforcing metal fittings are arranged so as to sandwich the web of the H-shaped steel at the first fixing portion, and are bolted to the pillar or the beam, and the first of the respective reinforcing metal fittings. In a state where one flange of the H-shaped steel is sandwiched between the fixing portion of 2 and the end member, the reinforcing metal fitting and the end member are joined by bolts.
The vicinity of the intersection between the first fixing portion and the second fixing portion comes into contact with the vicinity of the intersection between the web and the flange of the H-shaped steel, and the tip end side of the second fixing portion and the said. A gap is formed between the flange and the flange.
The stress transmitting member is arranged obliquely with respect to the column or the beam, and the other end of the stress transmitting member is fixed to the column or the beam or the floor portion of the reinforcing structure of the structure. .. The reinforcing structure of the structure according to claim 1, wherein the end member and the second fixing portion project outward from the flange and are joined by bolts at the projecting portion. In the overhanging portion, at least one of the second fixing portion and the end member is formed with a projecting portion that projects in the direction of the second fixing portion or the end member facing the second fixing portion, and the second portion in the projecting portion. The reinforcing structure of the structure according to claim 2, wherein the distance between the fixed portion and the end member is smaller than the thickness of the flange. The structure according to claim 3, wherein the distance between the second fixing portion and the end member in the protruding portion is smaller than the gap between the tip end side of the second fixing portion and the flange. Reinforcing structure of the body. The reinforcing structure of the structure according to claim 2, wherein a spacer is arranged between the second fixing portion and the end member in the overhanging portion. The reinforcing structure of the structure according to claim 5, wherein the distance between the spacer and the second fixing portion is smaller than the gap between the tip end side of the second fixing portion and the flange. The end members are provided at both ends of the stress transmission member, and the end members are provided at both ends.
One end of the stress transmission member is fixed to the column by the reinforcing metal fitting.
The reinforcing structure of the structure according to any one of claims 1 to 6, wherein the other end portion of the stress transmitting member is fixed to the beam by the reinforcing metal fitting. The bolt that penetrates the web and fixes the first fixing portion to the pillar or the beam is a bolt having a smaller diameter than the bolt that joins the end member and the second fixing portion. The reinforcing structure of the structure according to any one of claims 1 to 7. The feature is that the number of bolts that penetrate the web and fix the first fixing portion to the pillar or the beam is smaller than the number of bolts that join the end member and the second fixing portion. The reinforcing structure of the structure according to any one of claims 1 to 7. With stress transfer members
An end member provided at at least one end of the stress transmission member and
Reinforcing metal fittings that can be fixed with the end members and bolts,
Equipped with
The reinforcing metal fitting has a first fixing portion and a second fixing portion formed at a predetermined angle with respect to the first fixing portion.
The tip side of the second fixing portion does not come into contact with the virtual line orthogonal to the first fixing portion and passing through the intersection of the first fixing portion and the second fixing portion. A reinforcing member characterized in that a gap is formed between the virtual line and the second fixing portion. The second fixing portion has a protruding portion protruding to the opposite side of the first fixing portion on the bottom surface near the end portion on the opposite side of the intersection with the first fixing portion. The reinforcing member according to claim 10, wherein a through hole for a bolt is formed in a protruding portion.

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