JP7421936B2 - Fixing structure of reinforcing member to structure, method of fixing reinforcing member to structure, and fixing member - Google Patents

Description

The present invention relates to a fixing member for fixing a fixing member with a gusset plate to which a reinforcing member for reinforcing a structure is joined, a structure for fixing a reinforcing member to a structure using the same, and a method for fixing the same.

Conventionally, existing structures have been seismically reinforced by arranging reinforcing members such as braces. At this time, instead of welding, there is a method of fixing a brace or the like to the column using a fixing member (for example, Patent Document 1).

Japanese Patent Application Publication No. 11-44002

FIG. 13 is a diagram showing a general reinforcing member fixing structure 100. The structure 111 consists of columns and beams. The columns and beams are made of, for example, an H-beam having a pair of flanges 113 joined by a web 115. In the reinforcing member fixing structure 100, reinforcing members 107a and 107b are newly fixed to the existing structure 111. In the illustrated example, the reinforcing members 107a are arranged diagonally between the columns and the beams, and the reinforcing members 107b are arranged so that the adjacent columns are substantially parallel to the beams.

In order to fix such reinforcing members 107a and 107b to the structure 111, fixing members 101 and 103 are used. The fixing member 101 is a member to which a gusset plate 105 is joined. Gusset plate 105 can be joined to reinforcing members 107a and 107b.

The fixing member 101 and the fixing member 103 are arranged on both sides of the web 115 of the column and are fixed with bolts passing through the web 115. That is, the web 115 is sandwiched between the fixing member 101 and the fixing member 103, and both are fixed with bolts.

FIG. 14 is a diagram seen from the fixing member 103 side. The fixing member 101 to which the gusset plate is joined is fixed to the column by the fixing member 103 from the back side of the web 115. At this time, the fixing member 101 to which the gusset plate is joined receives tensile force from the reinforcing members 107a and 107b, and the force is transmitted to the fixing member 103 via the bolt 117. Therefore, ribs 109 are arranged on the fixing member 103 to withstand this. Note that the fixing bolt 117 is arranged avoiding the rib 109 portion.

The tensile force from the fixing member 101 transmitted from the bolt 117 is transmitted to the web 115 via the fixing member 103. At this time, since the rigidity of the fixing member 103 is improved by the ribs 109, if this were to be an integrated rigid body, uniform stress transmission would be performed over the entire contact surface between the fixing member 103 and the web 115. Therefore, by widening the contact area between the fixing member 103 and the web 115, local stress concentration can be avoided and deformation of the web 115 can be suppressed.

On the other hand, the fixing member 101 to which the gusset plate 105 is joined is heavy and difficult to handle. For this reason, a method of reducing the size of the fixing member 101 can be considered. Even in this case, if the size of the fixing member 103 is sufficiently large, a contact area for transmission from the fixing member 103 to the web 115 can be secured, so that deformation of the web 115 can be suppressed. In this case, as the fixing member 101 becomes smaller, the bolt 117 will be disposed toward the center of the web 115, but as described above, if the fixing member 103 is an integrated rigid body, , there is no problem because the force is applied uniformly to the entire contact surface.

On the other hand, even if the fixing member 103 side is made smaller, work efficiency is improved. However, if an attempt is made to downsize the fixing member 103 side, as described above, the contact area with the web 115 decreases, so the stress on the web 115 increases, and there is a risk that the web 115 may be deformed. For this reason, it is desirable to increase the rigidity of the fixing member 103, which receives the tensile force from the reinforcing members 107a and 107b on the back side of the web 115, so that it approaches an integral rigid body, and to increase the stress transmission area to the web 115. It has been.

However, since it is usually necessary to join the reinforcing members 107a and 107b and to handle the heavier fixing member 101, the work is often performed on the front side of the pillar. Therefore, it is difficult to install and fix the fixing member 103 on the back side of the pillar. Therefore, there is a desire to make the fixing member 103 easier to handle even if the size of the fixing member 101 remains the same. However, as described above, if the fixing member 103 is made smaller and lighter as it is, there is a problem that not only the rigidity decreases but also the stress transmission area to the web 115 decreases.

The present invention has been made in view of such problems, and provides a structure for fixing a reinforcing member to a structure, a method for fixing the same, and a method for fixing the same to a structure that has excellent workability and can efficiently reinforce the structure. The purpose is to provide a fixing member.

In order to achieve the above-mentioned object, a first invention is a structure for fixing a reinforcing member to a structure , the structure being an H-shaped structure in which a pair of flanges are connected by a web, a first fixing member disposed on one side of the web and joined to a gusset plate to which a reinforcing member is fixed; and a first fixing member disposed on the other side of the web with the web sandwiched therebetween. and a second fixing member fixed with a bolt;
A structure for fixing a reinforcing member to a structure , characterized in that the pair of second fixing members are arranged separately on each side of the pair of flanges .

With respect to the center line of the contact surface of the second fixing member with the web in the opposing direction of the pair of flanges, the bolt holes formed in the second fixing member are located closer to each other than the center line. It is desirable that it be shifted toward the flange side.

A notch is formed in a part of the second fixing member in a direction in which the second fixing members disposed on each side of the pair of flanges face each other. It may be a protrusion that protrudes in the direction in which the fixing members face each other.

Each of the pair of second fixing members may be divided into a plurality of divided pieces in the longitudinal direction of the H-shaped structure.

A protrusion that protrudes in the opposing direction of the pair of flanges may be formed on a divided piece of the second fixing member that is arranged at least at each longitudinal end of the H-shaped structure. .

At the end of the second fixing member on the flange side, a part of the contact surface side with the web is cut out, and a relief part is formed to suppress interference with a fillet near the joint between the web and the flange. may be formed.

According to the first invention, since the pair of second fixing members are arranged separately on each side of the pair of flanges, each member is miniaturized and lightweight. Therefore, it is easy to handle. Further, by preferentially transmitting the stress from the second fixing member only to the web near the flange, deformation of the web can be suppressed to a minimum.

In particular, by arranging the bolt holes of the second fixing member so as to be shifted from the center line toward the flange, stress can be more efficiently transmitted to the vicinity of the boundary between the flange and the web.

Furthermore, by forming a notch in a part of the opposing sides of the pair of separated second fixing members, it is possible to reduce the volume of a portion that makes a small contribution to stress transmission, thereby reducing weight. At this time, by leaving a portion as a protrusion, it is possible to suppress the second fixing member from collapsing in the opposite direction between the second fixing members, and to efficiently transfer the stress transmitted from the bolt between the flange and the web. It can be transmitted to the vicinity of the boundary.

Further, by further dividing each of the pair of second fixing members into a plurality of divided pieces in the longitudinal direction of the H-shaped steel and arranging them, each member can be further miniaturized.

In this case, by forming protrusions that protrude in the opposite direction of the pair of flanges on the divided pieces placed at each end in the longitudinal direction of the H-beam, it is possible to efficiently can transmit stress to.

In addition, at the end of the second fixing member on the flange side, a part of the contact surface with the web is cut out to form a relief part to avoid interference with the fillet near the joint between the web and the flange. , the second securing member can be positioned proximate the flange. Therefore, positioning is easy.

A second invention is a method for constructing a reinforcing member fixing structure according to the first invention, in which the first fixing member is disposed on one side of the H-shaped structure, and the first fixing member is arranged on one side of the H-shaped structure. a pair of second fixing members are arranged on the other side of the H-shaped structure, and the first fixing member and each of the second fixing members fix the web of the H-shaped structure. A method for fixing a reinforcing member to a structure, comprising the steps of sandwiching and fixing, and fixing the reinforcing member to the first fixing member.

A third invention is a fixing member for fixing a fixing member with a gusset plate, which includes a plate-shaped main body, a notch formed on one side of the main body, and a notch formed in the main body. a bolt hole formed on the one side of the main body portion, a portion other than the notch portion serves as a protrusion, and a plurality of the protrusion portions are formed on the one side of the main body portion. The bolt hole is formed to be shifted toward the other side with respect to a center line between the tip of the protrusion and the end of the contact surface with the web on the other side opposite to the one side. This is a fixing member characterized by:

The fixing member may be divided into a plurality of divided pieces.

At least the divided piece may be formed with a protrusion protruding to one side.

At the end of the fixing member, a part of the contact surface with the web may be cut out to form a relief part that suppresses interference with a fillet near the joint between the web and the flange.

According to the second and third inventions, a reinforcing member fixing structure can be easily obtained.

According to the present invention, it is possible to provide a structure for fixing a reinforcing member to a structure, a method for fixing the same, and a fixing member used therefor, which has excellent workability and can efficiently reinforce the structure.

(a) is a diagram showing the reinforcing member fixing structure 10, and (b) is a sectional view taken along the line DD in (a). FIG. 3 is a plan view of the fixing member 1. FIG. FIG. 3 is an enlarged view of the vicinity of the bolt 16 of the reinforcing member fixing structure 10. (a) and (b) are schematic diagrams of the state of force transmission from the fixing member 1. (a) is a plan view of the fixing member 1a, and (b) is a sectional view taken along the line II in (a). FIG. 3 is an enlarged view of the vicinity of the bolt 16 of the reinforcing member fixing structure 10a. (a) to (d) are plan views of fixing members 1b to 1e. (a) to (b) are plan views of fixing members 1f to 1g. (a) is a plan view of the fixing member 1h, (b) is a sectional view taken along line JJ in (a), and (c) is a sectional view taken along line KK in (a). (a) is a plan view of the fixing member 1i, (b) is a sectional view taken along line LL in (a), (c) is a plan view of the fixing member 1j, and (d) is a MM in (c). A line sectional view, (e) is another MM line sectional view of (c). (a) is a diagram showing a reinforcing member fixing structure 10b, and (b) is a diagram showing a reinforcing member fixing structure 10c. (a) is a diagram showing a reinforcing member fixing structure 10d, and (b) is a diagram showing a reinforcing member fixing structure 10e. FIG. 3 is a diagram showing a reinforcing member fixing structure 100. FIG. 3 is a view of the reinforcing member fixing structure 100 as seen from the fixing member 103 side.

(First embodiment)
Hereinafter, a reinforcing member fixing structure 10 according to an embodiment of the present invention will be described. FIG. 1(a) is a diagram showing a reinforcing member fixing structure 10 using the fixing member 1, and FIG. 1(b) is a sectional view taken along the line DD in FIG. 1(a).

The reinforcing member fixing structure 10 is a structure for fixing a reinforcing member to a structure 11 made of columns, beams, and the like. The columns and the like constituting the structure 11 are made of H-shaped steel (H-shaped structure) in which a pair of flanges 13 are connected by a web 15. A fixing member 17, which is a first fixing member, is arranged on one side of the web 15, and a fixing member 1, which is a second fixing member, is arranged on the other side of the web 15. Note that the structure does not have to be an H-shaped structure.

The fixing member 17 is made of steel, for example, and a rib is joined to a gusset plate 19 to which a reinforcing member is fixed to an integral plate-like member. Although illustration of reinforcing members is omitted in the following drawings, for example, the reinforcing members 107a and 107b shown in FIG. 13 are fixed to the gusset plate 19 with bolts or the like.

The pair of fixing members 1 are arranged separately on each side of the pair of flanges 13. The fixing member 1 and the fixing member 17 are fixed with bolts 16 with the web 15 sandwiched between them. That is, the fixing member 1 is a member for fixing the fixing member 17 with a gusset plate.

FIG. 2 is a plan view of the fixing member 1. The fixing member 1 is a plate-shaped member as a whole, and is made of steel, for example. The fixing member 1 includes a plate-shaped main body 3, a bolt hole 5 formed in the main body 3, a notch 9 formed in a part of one end of the main body 3, etc. .

As shown in FIG. 2, the notch 9 is formed with respect to a substantially rectangular reference shape, and the portion other than the notch 9 becomes a relatively protruding protrusion 7. In the illustrated example, a substantially trapezoidal notch 9 is formed in a predetermined range in the center of the fixing member 1 in the longitudinal direction (direction corresponding to the longitudinal direction of the H-shaped steel), and a pair of protrusions 7 are formed at both ends. is formed. The protrusion 7 has a trapezoidal shape whose width becomes narrower toward the end. Note that the side of the main body portion 3 opposite to the protrusion 7 is formed in a straight line without a cutout or the like.

As shown in FIG. 1(a), the pair of fixing members 1 disposed on each side of the pair of flanges 13 are arranged so that the notches 9 face in the direction in which the fixing members 1 face each other (left-right direction in the figure). will be placed in Therefore, the protrusions 7 of each fixing member 1 are oriented to protrude in the direction in which the fixing members 1 are opposed to each other. Further, the linear side opposite to the protrusion 7 is arranged along the flange 13. Note that the cutout portion 9 is not necessarily required, and in this case, the main body portion 3 has a substantially rectangular shape.

Here, as shown in FIG. 2, the center line of the width A of the main body 3 (the length from the tip of the protrusion 7 corresponding to the opposing direction of the pair of flanges 13 to the opposite side of the main body 3) is Let it be C. That is, the center line of the contact surface of the main body portion 3 with the web 15 is C. In this case, the bolt hole 5 formed in the fixing member 1 is disposed offset from the center line C in the direction opposite to the direction in which the notch 9 (protrusion 7) is formed. That is, when the fixing member 1 is arranged on the web 15, the bolt holes 5 are arranged to be shifted from the center line C to the side of the flanges 13 that are close to each other.

For example, in FIG. 1(a), the fixing member 1 on the right side of the figure is arranged along the flange 13 on the right side of the figure, and the bolt holes 5 of this fixing member 1 are arranged along the center line of the fixing member 1 (not shown). ) is shifted toward the right flange 13 side. Similarly, in FIG. 1(a), the fixing member 1 on the left side of the figure is arranged along the flange 13 on the left side of the figure, and the bolt hole 5 of this fixing member 1 is located along the center line of the fixing member 1 (not shown in the figure). The flange 13 is located on the left side with respect to the flange 13. That is, the bolt holes of the web 15 are arranged near the flange 13.

Here, by separating and using a pair of fixing members 1 as opposed to a conventional integrated fixing member, each fixing member 1 can be miniaturized. However, as described above, by downsizing the fixing member 1, the contact area with the web 15 becomes smaller, and the force transmission area becomes smaller. However, as a result of intensive research, the inventors deliberately made the fixing member 1 smaller and transmitted the force preferentially only to the web 15 near the flange 13, thereby efficiently transferring the force from the fixing member 1 to the H-beam steel. It has been found that the deformation of the web 15 can be suppressed to a minimum. In other words, the deformation of the web 15 is suppressed as a result by preferentially applying force only to the area near the flange 13, which is the opposite of the conventional method of applying force uniformly to the entire contact area. I found out that it is possible.

FIG. 3 is an enlarged view of the vicinity of the bolt 16 in FIG. 1(b), and FIG. 4(a) is a schematic diagram showing force transmission. As described above, a reinforcing member is connected to the fixing member 17 disposed on the front side of the web 15 (the upper side in the drawing and the fixing member 17 side is the front side) via the gusset plate 19. Since this reinforcing member takes charge of tensile force, the fixing member 17 receives force in the direction of the reinforcing member (upward in the figure, indicated by arrow E). The force experienced by the fixing member 17 is transmitted via the bolt 16 to the fixing member 1, which in turn transmits the force to the web 15.

At this time, if the part receiving the force from the bolt 16 is shifted toward the flange 13 from the center line C of the fixing member 1, the force will be transmitted to the vicinity of the flange 13, which is close to the bolt 16 (arrow in the figure). F). This is based on the following principle.

As shown in FIG. 4(a), the web 15 is slightly deformed by the force from the fixing member 1, but the amount of deformation tends to be larger as the distance from the flange 13 increases. Further, in a state where the web 15 is slightly deformed, if the fixing member 1 is in surface contact with the web 15, the direction of the force and the direction of the contact surface change slightly. In such a state, combined with the slight deformation of the fixing member 1 itself, the force is not uniformly transmitted to the web 15 over the entire area of surface contact, and the amount of force transmitted is distributed depending on the position of the fixing member 1.

At this time, by shifting the bolt 16 toward the flange 13 from the center line C of the fixing member 1, the amount of deformation of the web 15 is reduced, and the force is applied to the flange 13, which is closer to the bolt 16 and has a smaller amount of deformation. Priority will be given to the transmission of information. In particular, the protrusion 7 is formed on the opposite side of the fixing member 1 from the flange 13. That is, by bringing the web 15 into contact with the web 15 at a position away from the bolt 16, the amount of force transmitted at this location (arrow G in the figure) can be relatively reduced, and the fixing member 1 can be prevented from collapsing (in the figure). Arrow H) can be suppressed to a minimum.

On the other hand, in FIG. 4(b), for comparison, the force from the bolt 16 is deliberately shifted in a direction away from the flange 13, but in this case, the deformation of the web 15 becomes even greater, so the bolt The force transmission on the side closer to 16 (arrow G in the figure) has priority. As a result, the fall H of the fixing member 1 tends to further increase. In other words, even if compared with the case where the bolt holes 5 are formed on the center line C of the fixing member 1, it is better to dispose the bolt holes 5 shifted toward the flange 13 side as shown in FIG. 4(a). , force can be relatively preferentially transmitted to the flange 13 side, and even if the fixing member 1 is downsized, the amount of deformation of the web 15 can be suppressed to a minimum.

Note that, as shown in FIG. 14, the fixing member 103 that has ribs 109 and is configured in one piece does not take into account such collapse and force transmission distribution, and the idea is originally different from the present invention. It is something.

Note that such a reinforcing member fixing structure 10 is constructed by the following method. First, the fixing member 17 is placed on one side of the H-shaped steel, and the fixing member 1 is placed on the other side of the H-shaped steel. The fixing member 17 and the fixing member 1 sandwich the H-section steel web 15 and are fixed with bolts 16. The above operations are performed for each of the pair of fixing members 1. Next, the reinforcing member is fixed to the gusset plate 19 of the fixing member 17. The reinforcing member can be fixed to the structure 11 by the above method.

As described above, according to the present embodiment, instead of using an integrated and highly rigid fixing member as in the past, the fixing members are purposely downsized and arranged separately on each flange 13 side. It is possible to improve workability and reduce material costs. At this time, the force is selectively transmitted to the portion of the web 15 near the boundary with the flange 13 where the amount of web deformation is the smallest and where stress can be efficiently transmitted to the flange 13. It is possible to minimize deformation.

In particular, since the bolt holes 5 are shifted toward the nearby flange 13 with respect to the center line C of the fixing member 1, force can be transmitted to the vicinity of the boundary between the flange 13 and the web 15 more efficiently.

Further, by forming the cutout portion 9 and the protrusion 7 on the side opposite to the flange 13, it is possible to reduce the weight of the fixing member 1 and suppress the fall of the fixing member 1.

(Second embodiment)
Next, a fixing member according to a second embodiment will be explained. Note that in the following description, components that perform the same functions as those in the first embodiment are given the same reference numerals as in FIGS. 1 to 4, and redundant description will be omitted.

FIG. 5(a) is a plan view showing the fixing member 1a according to the second embodiment, and FIG. 5(b) is a sectional view taken along the line II in FIG. 5(a). The fixing member 1a has substantially the same configuration as the fixing member 1, but differs in that a relief portion 21 is formed. The relief portion 21 is formed by cutting out a corner on the back side (the side in contact with the web 15) along the side opposite to the side where the notch 9 (protrusion 7) of the main body 3 is formed. It is formed by

FIG. 6 is a sectional view showing a state in which the fixing member 1a is arranged and fixed to the web 15. As described above, when the fixing member 1a is placed on the web 15, the relief portion 21 is formed by cutting out a part of the corner on the side of the contact surface with the web 15 at the end on the flange 13 side. Ru. A fillet 22 is formed near the joint between the web 15 and the flange 13, and the relief portion 21 is for suppressing interference with the fillet 22.

Note that, as shown in FIG. 6, the relief portion 21 does not become a contact surface with the web 15. Here, as shown in FIG. 5(b), if the width A of the main body part 3 in the fixing member 1a is the length of the contact surface with the web 15, then the center line C in the fixing member 1a excluding the relief part 21 is This is the center line of the part. Therefore, in the fixing member 1a, the bolt holes 5 are arranged to be shifted toward the flange 13 (on the opposite side from the notch 9 (protrusion 7)) with respect to the center line C in the region excluding the escape portion 21.

Note that the size of the relief portion 21 is not particularly limited as long as interference with the fillet 22 can be suppressed even slightly, but it needs to be larger than that of simply chamfering a general member. Therefore, the relief portion 21 is larger than the chamfer formed on the upper surface side of the fixing member 1a. For example, in order to reliably suppress interference with the fillet 22, the relief portion 21 can be formed to have a thickness greater than half of the wall thickness of the fixing member 1a.

Further, the shape of the relief portion 21 may correspond to the shape of the fillet 22. In this case, part or all of the relief part 21 may come into contact with the fillet 22, but as described above, the center line C of the main body part 3 is defined as the length of the main body part 3 excluding the relief part 21. do. Further, if interference with the fillet 22 can be reliably avoided by the relief portion 21, the end portion of the fixing member 1a (the side opposite to the cutout portion 9 (projection portion 7)) can be brought into contact with the flange 13.

According to the second embodiment, the same effects as the first embodiment can be obtained. Furthermore, by forming the relief portion 21 at the end on the side of the contact surface with the web 15, interference between the fillet 22 formed between the web 15 and the flange 13 and the fixing member 1a can be avoided. Therefore, the fixing member 1a can be placed close to the flange 13, making it easy to align the position and orientation of the fixing member 1a.

Note that the shape of the notch 9 (protrusion 7) formed in the fixing member is not limited to the example described above, and any other shape is applicable. For example, the shape of the notch 9 is not trapezoidal, but may be substantially rectangular as in the fixing member 1b shown in FIG. 7(a). In this case, the protrusion 7 also has a substantially rectangular shape and has a substantially constant width up to the tip.

Further, as in the fixing member 1c shown in FIG. 7(b), the notch portion 9 may be formed into a trapezoid, and the notch portion 9 may be formed over substantially the entire width of the main body portion 3. In this case, the protrusion 7 is formed into a substantially triangular shape whose width becomes narrower toward the tip.

Further, the notch portion 9 may be formed in an arc shape as in the fixing member 1d shown in FIG. 7(c). Also in this case, the protrusion 7 is formed so that the width becomes narrower toward the tip. In addition. In this case, the base of the protrusion 7 is not necessarily clear, but the length of the main body 3 at the part where the amount of notch is the largest (approximately the center in the longitudinal direction in the figure) is taken as the base position, and the end The entire portion side (left side in the figure) is made into a protrusion 7. In this way, by forming the notch 9 so that the width of the protrusion 7 becomes narrower toward the tip, weight reduction can be achieved efficiently.

Further, as in the fixing member 1e shown in FIG. 7(d), the notches 9 may be formed at a plurality of locations. In this case, the protrusion 7 is not formed near the end of the main body 3 but is formed at a position near the center of the main body 3 in the longitudinal direction. For example, the protrusion 7 may be arranged at a position overlapping the bolt hole 5. In this way, by aligning the protrusion 7 and the bolt hole 5, the fixing member 1e can be tilted down efficiently. Note that even in this case, the shape of the cutout portion 9 may be a rectangle, an arc, or the like instead of a trapezoid.

Further, the cutout portion 9 may be formed in a stepped shape as in the fixing member 1f shown in FIG. 8(a). In the illustrated example, a first stage notch 9 may be formed on one side of the main body 3, and a deeper notch 9, which is shorter than the first stage, may be formed approximately in the center thereof. By doing so, the protrusion 7 can be shaped like a step. Even in this case, the width of the protrusion 7 can be made narrower on the tip side.

Furthermore, as in the fixing member 1g shown in FIG. 8(b), the notch 9 is trapezoidal, but the protrusion 7 may have a shallower taper shape. That is, the width of the protrusion 7 may be made to narrow rapidly toward the tip. In this manner, the shape of the notch portion 9 can be formed in accordance with a portion that contributes little to force transmission when the fixing member is used, thereby making it possible to efficiently reduce the weight. Further, the required rigidity of the protrusion 7 decreases depending on the amount of protrusion from the main body 3, so by designing the protrusion so that the width becomes narrower toward the tip, weight can be efficiently reduced.

Further, in the example described above, the thickness of the fixing member is approximately constant, but the thickness is not limited to this. 9(a) is a plan view showing the fixing member 1h, FIG. 9(b) is a sectional view taken along line JJ in FIG. 9(a), and FIG. 9(c) is a plan view showing the fixing member 1h. It is a sectional view taken along the K line. The fixing member 1h is formed in a tapered shape in which the thickness gradually becomes thinner near the edge of the main body portion 3. In the fixing member 1h, the area of the upper flat part (excluding the tapered part) of the main body part 3 is smaller than the contact area with the web 15. In this way, by forming the edge so that its diameter gradually expands toward the contact surface with the web 15, it is possible to remove the thickness of the portion that contributes little to the transmission of force, resulting in efficient weight reduction. can do.

The method of forming a thin portion by removing the thickness from the upper surface side of the main body portion 3 is not limited to making the edge portion uniformly tapered. FIG. 10(a) is a plan view showing the fixing member 1i, and FIG. 10(b) is a sectional view taken along line LL in FIG. 10(a). In the fixing member 1i, the protrusion 7 is formed near the end of the main body 3 in the longitudinal direction. Further, a tapered thin portion 23 is formed at the protrusion 7 and a portion where the protrusion 7 is extended to the main body portion 3 . That is, the protrusion 7 and the vicinity of the longitudinal ends of the main body 3 have a tapered shape in which the wall thickness becomes thinner toward the outer circumferential side.

Similarly to the fixing member 1h, the fixing member 1i also has a smaller area of the upper flat part (excluding the tapered part) of the main body part 3 than the contact area with the web 15. In this way, by forming the end portion so that its diameter gradually increases toward the contact surface with the web 15, it is possible to remove the thickness of the portion that makes a small contribution to the transmission of force, resulting in efficient weight reduction. can do.

FIG. 10(c) and FIG. 10(d) are cross-sectional views taken along the line MM in FIG. 10(c). Similarly to the fixing member 1i and the like, the fixing member 1j also has a tapered thin portion 23 formed at the protrusion 7 and a portion where the protrusion 7 extends toward the main body portion 3. Further, a thin portion 23 is also formed between the bolt holes 5 (near the approximate longitudinal center of the main body portion 3). Note that the thin wall portion 23 at the center in the longitudinal direction of the main body portion 3 may have an arc shape as shown in FIG. 10(d), or may have a substantially rectangular cross section as shown in FIG. 10(e). good. In this way, the weight can be efficiently reduced by removing the thickness of the parts that make a small contribution to force transmission.

Further, in the embodiment described above, the pair of fixing members 1 and the like are arranged to face each other, but each of the fixing members 1 and the like may be further divided. FIG. 11(a) is a diagram showing the reinforcing member fixing structure 10b. The fixing member 1k has a shape in which the fixing member 1 is cut approximately at the center in the longitudinal direction and divided into two parts. That is, in the reinforcing member fixing structure 10b, each of the pair of fixing members 1 is divided into a plurality of divided pieces 25 in the longitudinal direction of the H-shaped steel and fixed.

Note that the form of the fixed member to be divided does not have to be the fixed member 1. For example, in the reinforcing member fixing structure 10c shown in FIG. 11(b), the fixing member 1l is obtained by cutting the fixing member 1e approximately at the center in the longitudinal direction. In this way, the fixing member does not have to be integrally formed in the longitudinal direction of the H-shaped steel. As long as the force transmitted from the bolt 16 can be transmitted preferentially to the vicinity of the flange 13, the same effect can be obtained even if each fixing member is divided into a plurality of divided pieces 25 in the longitudinal direction.

Further, instead of cutting each of the fixing members described above, the divided pieces 25 may be divided from the beginning. For example, in the reinforcing member fixing structure 10c shown in FIG. 12(a), a fixing member 1m is used. The fixing member 1m is composed of a pair of substantially trapezoidal (or substantially triangular) plate-like divided pieces 25. The fixing member 1m is installed in the longitudinal direction of the H-shaped steel so that the narrow sides of the divided pieces 25 (the lengths in the direction in which the flanges 13 face each other) are butted against each other. In this case, the protrusion 7 is the part of the divided piece 25 that is widest and protrudes in the direction of the opposing fixing members 1m. In this way, the shape of the divided pieces 25 that are divided in the longitudinal direction of the H-section steel is not particularly limited.

Moreover, like the reinforcing member fixing structure 10c shown in FIG. 12(b), the H-shaped steel may be divided into three or more parts in the longitudinal direction. The fixing member 1n has a main body that is substantially the same as the fixing member 1, but is divided into three parts. Note that at least one bolt hole 5 is formed in each divided piece 25. In this way, the fixing member may be divided into three or more parts in the longitudinal direction of the H-section steel.

Note that when the fixing member is divided into two parts in the longitudinal direction of the H-shaped steel, it is desirable that the protrusion 7 be formed in each divided piece 25. On the other hand, when the fixing member is divided into three or more parts in the longitudinal direction of the H-shaped steel, at least only the divided pieces 25 disposed at each longitudinal end of the H-shaped steel protrude in the direction opposite to the flange 13. It is sufficient if the protrusion 7 is formed. That is, it is not necessary to form the protrusion 7 on all the divided pieces 25.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not limited to the embodiments described above. It is clear that those skilled in the art can come up with various changes and modifications within the scope of the technical idea stated in the claims, and these naturally fall within the technical scope of the present invention. It is understood that it belongs.

1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1k, 1l, 1m, 1n...Fixing member 3...Body part 5...Bolt hole 7... Protrusion 9...Notches 10, 10a, 10b, 10c...Reinforcement member fixing structure 11...Structure 13...Flange 15...Web 16...Bolt 17...Fixing member 19... Gusset plate 21... Relief portion 22... Fillet 23... Thin wall portion 25... Divided piece 100... Reinforcement member fixing structure 101, 103... Fixing member 105... Gusset Plates 107a, 107b...Reinforcement member 109...Rib 111...Structure 113...Flange
115……Web 117……Bolt

Claims (11)

A structure for fixing a reinforcing member to a structure,
The structure is an H-shaped structure in which a pair of flanges are connected by a web,
a first fixing member disposed on one side of the web and joined with a gusset plate to which a reinforcing member is fixed;
a second fixing member disposed on the other side of the web , sandwiching the web and fixed to the first fixing member with a bolt;
Equipped with
A structure for fixing a reinforcing member to a structure , wherein the pair of second fixing members are arranged separately on each side of the pair of flanges . With respect to the center line of the contact surface of the second fixing member with the web in the opposing direction of the pair of flanges, the bolt holes formed in the second fixing member are located closer to each other than the center line. The structure for fixing a reinforcing member to a structure according to claim 1 , wherein the reinforcing member is shifted toward the flange. A notch is formed in a part of the second fixing member in a direction in which the second fixing members disposed on each side of the pair of flanges face each other. 3. The structure for fixing a reinforcing member to a structure according to claim 1 or 2, wherein the structure is a protrusion projecting in a direction in which the fixing members face each other. Any one of claims 1 to 3 , wherein each of the pair of second fixing members is divided into a plurality of divided pieces in the longitudinal direction of the H-shaped structure. A structure for fixing a reinforcing member to the described structure. 4 . The divided pieces disposed at least at each longitudinal end of the H-shaped structure are formed with protrusions that protrude in opposing directions of the pair of flanges. 4 . A structure for fixing a reinforcing member to the described structure. At the end of the second fixing member on the flange side, a part of the contact surface side with the web is cut out, and a relief part is formed to suppress interference with a fillet near the joint between the web and the flange. A structure for fixing a reinforcing member to a structure according to any one of claims 1 to 5 , characterized in that: is formed. A method for constructing a structure for fixing a reinforcing member to a structure according to any one of claims 1 to 6 , comprising:
The first fixing member is disposed on one side of the H-shaped structure, and a pair of second fixing members are disposed on the other side of the H-shaped structure, and the second fixing member is disposed on the other side of the H-shaped structure. sandwiching and fixing the web of the H-shaped structure between one fixing member and each of the second fixing members;
fixing the reinforcing member to the first fixing member;
A method for fixing a reinforcing member to a structure, comprising: A fixing member for fixing a fixing member with a gusset plate,
A plate-shaped main body,
a notch formed on one side of the main body;
a bolt hole formed in the main body;
Equipped with
On the one side of the main body portion, a portion other than the notch portion serves as a protrusion, and a plurality of the protrusions are formed,
The bolt is aligned with respect to the center line between the tip of the protrusion formed on the one side of the main body and the end of the contact surface with the web on the other side opposite to the one side. A fixing member characterized in that the hole is formed to be shifted to the other side. The fixing member according to claim 8 , wherein the fixing member is divided into a plurality of divided pieces. 10. The fixing member according to claim 9 , wherein at least the divided piece is formed with a protrusion that protrudes to one side. At the end of the fixing member, a part of the contact surface with the web is cut out to form a relief part that suppresses interference with a fillet near the joint between the web and the flange. The fixing member according to claim 10 .

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