JP2006125081A - Brace structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brace structure, disposed as a brace within one plane even if tie rods intersect each other, and avoiding unequal load in a fitting end of the tie rod and a screw part of a turnbuckle by applying tensile force to the tie rods only in the complete axial direction. <P>SOLUTION: Joint members 4, 5 interposed in the midway of the rods 2, 3 are disposed in an intersecting region 6 of the braces in order to apply tension to the individual braces, and a flat surface closely adhering to a connecting part of the joint member of the other brace to intersect is formed on the connecting part connecting screw hole forming parts 4a, 4b, 5a, 5b provided at both ends of the joint members where the ends of the rods are screwed. The flat surfaces in both of the connecting parts are on the extension of the rod axis of own brace, whereby when the connecting part is made to closely adhere to the other connecting part, the axes of both of tie rods 2, 3 are located within the same plane. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a brace structure, and more particularly to a brace structure in which cross braces can be arranged on a single plane in a state where a tie rod is tensioned.

  On the wall, braces are installed diagonally to reinforce the diagonal of the grid formed by pillars and beams, and to increase the rigidity of the grid formed by beams and beams on the roof and ceiling. Or Both are intended to suppress the deformation of the lattice due to loads or external forces due to the floor structure, etc., but the reinforcement principle allows the brace to exert a large axial strength, and the distance between its ends changes. Reduce as much as possible.

  By the way, in the case of a brace assuming that not only tension but also compression acts as an axial force, a member having high rigidity against compression of a shape steel, a steel pipe, etc. and having high rigidity with little buckling is used. . This brace is generally attached with the axial stress released by welding or bolting. On the other hand, if it is sufficient to bear the tensile force, a tie rod with a diameter of several tens of millimeters is used. In this case, it is only necessary to provide a tensile strength capable of resisting an assumed load. However, an appropriate tension is applied to strengthen the lattice in advance by incorporation, and normally functions as a tension rod.

  The tensioning operation is performed after the tie rods are assembled into the lattice. As shown in FIG. 11, normally, two rods 31 and 32 are arranged in series on one diagonal, and a turnbuckle 33 is arranged at the opposite end. Screws 31a and 32a are cut at opposite ends of both rods, and if the amount of screw holes 33m and 33n screwed on both sides is increased by rotating the turnbuckle 33, both rods are fastened and pretensioned. Can be hung. Since the operation requires pulling both rods at the same time, the screw holes 33m and 33n formed on the left and right sides of the turnbuckle are reverse screws, and the screw formed on the opposite end of the tie rod is also a spiral in the rotation direction corresponding to them. ing.

  If the lever 34 or the like is inserted into the barrel hole 33a of the turnbuckle 33 and is rotated in the direction of the arrow 35, the tie rods 31 and 32 welded to the terminal plates 36 and 37 are drawn. A desired tension can be applied by eliminating the fastening play and twisting to a place where a predetermined torque is required. Since the terminal plates 36 and 37 are fixed with bolts and nuts 41 or the like using the retaining holes 40 of the gusset plates 38 and 39 provided at the corners or the like of the lattice, the pair of top portions facing each other in the lattice are attracted to each other. A force acts in the direction. Such a behavior is also performed in the surrounding grid, so that the separation of the opposing tops is suppressed and the rigidity of the entire grid is improved.

  If such a treatment is applied to all the tops, the braces must be crossed as disclosed in Japanese Utility Model Laid-Open No. 1-181001 and Japanese Patent Laid-Open No. 8-68138. Since each of the intersecting tie rods is fastened by the turnbuckle, the turnbuckles 33A and 33B are usually arranged at a position off the intersecting portion 42 as shown in FIG. 11 so that the rotation operation is not hindered.

  If the cross brace is installed in the wall, it does not matter if you look at it, but if you need to install the brace in a position where it can be seen, such as an open ceiling, or if you want to show the brace intentionally and show its functional beauty When trying to do so, the above-described configuration lacking symmetry greatly impairs the design.

Moreover, although the tie rods are thinner than the turnbuckles, both braces cannot be placed on a single plane. If the linearity of the tie rods is not maintained, the load burden at the welded portions 43 and 44 at the end plates 36 and 37 will be uneven, so the welding quality must be improved. Further, even if the engagement with the end screw of the rod in the turnbuckle is slight, a single contact occurs, and if the tensile strength is taken into consideration, the diameter of the screw must be increased.
Japanese Utility Model Publication No. 1-118001 JP-A-8-68138

  The present invention has been made in view of the above-described problems. The purpose of the present invention is to be able to arrange a brace in one plane as a brace even if the tie rods cross each other. It is possible to avoid unequal load on the screw part such as the turnbuckle and turnbuckle, to improve the design of the brace structure by arranging the turnbuckle etc. It is an object of the present invention to provide a brace structure that is intended to realize easy absorption of energy.

  The present invention is applied to a cross brace in which tie rods are arranged so as to cross each other in order to reinforce a lattice structure composed of column beams or the like. 1 and 2, referring to FIG. 1 and FIG. 2, joint members 4 and 5 interposed in the middle of the rods 2 and 3 are arranged at the intersections 6 of the braces in order to apply tension to the individual braces. The The connecting portion 4m that connects the screw hole forming portions 4a, 4b, 5a, and 5b provided at both ends of the joint member to screw the end portion of the rod is in close contact with the connecting portion 5m of the joint member of the other brace that intersects A flat surface 4M is formed. The flat surfaces 4M and 5M at any connecting part are on the extension of the rod axes 2x and 3x of the own brace, and when the other connecting part is brought into close contact with the connecting part, any of the tie rods 2 and 3 has its axis Can be arranged in the same plane.

  The screw hole forming portions 4a, 4b, 5a and 5b at both ends of the joint members 4 and 5 may be reverse screws (see FIG. 5).

  A pin hole 8 (see FIG. 2) that extends on the extension of the axis 2x of the rod 2 and extends perpendicularly to the flat surface 4M is formed in the connecting portion 4m, and the axis 3x of the other rod 3 that intersects. Formed at the intersection with the extension.

As shown in FIG. 6, the flat surfaces 4M _L, the 5M _L, it is also possible to have given a length that enables crossing angle changes of the joint members 4 and 5.

  The pin hole may be a long hole 8A (see FIG. 10B) extending in the rod axis direction of the own brace.

  As shown in FIG. 3, the anti-joint member side end of the rod 3 is provided with a male screw 3p attached to the threaded clevis 10, and the joint member side end has a screw fastening portion 3 a having a reverse spiral to the male screw 3 p. The wrench hanging part 12 is provided in

  According to the present invention, since the joint member as a turnbuckle or a similar metal fitting is arranged at the crossing portion of the brace, a thick and conspicuous thing is placed at the center of the tie rod, and since it has symmetry, it has a sense of stability. It can be a cross brace with a high aesthetic appearance. Because it looks better, it can be easily introduced in places where people can see it.

  Since the flat surface given to the connecting portion connecting the threaded hole forming portions provided at both ends of the joint member is on the extension line of the rod axis of the own brace, when closely contacting with the connecting portion of the joint member of the other brace that intersects, All rod axes are arranged in the same plane. Accordingly, since the tensile force acting on each tie rod acts in accordance with the rod axis, the load-carrying load is symmetrical in the holding structure portion at the screw fastening portion between the joint member and the rod and the anti-joint member side end of the rod. Therefore, it is not necessary to take measures such as adopting an excessively large screw in order to compensate for variations in load in the circumferential direction.

  When the threaded hole forming portions at both ends of the joint member are reverse screws, the joint member can function as a turnbuckle. The rotation of the turnbuckle allows the opposing rods to be screwed together, and fastening and pretensioning are accomplished by a series of operations.

  Since the connecting part is provided with a pin hole extending perpendicular to the flat surface, if the joint member closely attached via the pin is integrated, the joint member will not separate, and the rod will always remain within one surface. Can be put. Further, since the tightly joined joint members mutually prevent rotation around the rod axis, the pretension applied to the rod can be maintained without causing a change in the screwed state between the joint member and the rod. . Even if the lattice is distorted by receiving an external force, the independent displacement of the joint member is suppressed by the pin, so that the expansion and contraction of the tie rods are mutually limited, and eventually the deformation expansion of the lattice is suppressed.

  If the length of the flat surface is set so as to allow the crossing angle of the joint member to be changed, there is room for the rear assembly brace to swing in the same plane with respect to the front assembly brace fixed to the lattice. As a result, it can be easily used even for grids having different crossing angles. Incidentally, even when a clevis joint is employed on the anti-joint member side of the rod, the rear assembly brace can be brought in with an assembly close to a predetermined length, thereby speeding up the construction.

  If the pin hole is a long hole extending in the direction of the rod axis of the brace, even if a large external force acts suddenly due to a large earthquake, etc., the joint member may be deformed in a non-parallelogram, for example. Can be displaced in the axial direction within the range of the long hole without being obstructed by the pin. A flexible structure that can absorb seismic energy by deforming the grid and extending the tie rods can create a long evacuation time before collapse.

  The anti-joint member side end of the rod is a male screw that can be attached to a clevis with a screw hole, and if the joint member side end is a reverse male screw, the rod can be rotated in one direction using the spanner hooking part. The rod can be fastened and pretension can be applied without turning the member.

  Hereinafter, a brace structure according to the present invention will be described in detail with reference to the drawings showing embodiments thereof. FIG. 1 is a plan view of an example of a brace structure 1 in which tie rods are arranged so as to cross each other in order to reinforce a lattice-like structure composed of column beams or the like. The grid can be applied to the ceiling structure composed of beams, but in any case, in order to reinforce the grid structure, the tie rods 2 and 3 are arranged on the diagonal of the grid (not shown) or similar places, It will be in the state of being incorporated into an X shape or the like.

  The brace structure is composed of tie rods 2 and 3 that mainly function as braces and joint members 4 and 5 that apply tension to them. The joint member interposed in the middle of the rod is disposed at the crossing portion 6 of the brace, and screw hole forming portions 4a, 4b, 5a, to which the ends of the rod divided bodies 2A, 2B, 3A, 3B are screwed at both ends, 5b is provided.

  As shown in FIG. 3, the connecting portion 4m that connects the screw hole forming portions 4a and 4b has a flat surface 4M that is in close contact with the connecting portion 5m that connects the screw hole forming portions 5a and 5b of the joint member 5 of the other brace that intersects. Is formed. As shown in FIG. 2, the flat surfaces 4M and 5M in any of the connecting portions are on the extension of the rod axes 2x and 3x of the own brace, and other connecting portions 5m are connected to the connecting portion 4m as shown in FIG. It is considered that the rods 2 and 3 of either brace can be arranged with their axes 2x and 3x in the same plane when they are brought into close contact. The length of the flat surface is such that the intersecting joint members can be accommodated.

  That is, the flat surface 4M (see FIG. 2) of the connecting portion 4m is positioned on the virtual connecting line 2y of the rod axis 2x and is not displaced from the connecting line, so that the flat surfaces 5M of the other joint members 5 are in close contact with each other. When it is made, it forms so that it may also become on the virtual connection line 3y of the rod axis line 3x of another brace. As a result, since the axes 2x and 3x of any of the rods 2 and 3 are in the same plane, the tensile force acting on each tie rod acts on the rod axis. In each of the screw fastening portions 2a, 2b, 3a and 3b between the joint members 4 and 5 and the rods 2 and 3, and the holding structure portion 7a at the anti-joint member side end of the rod, the load sharing is made as symmetrical as possible. Kept. If the variation in the circumferential load distribution is eliminated or extremely reduced, it is not necessary to introduce excessively large or excessive quality screws to cover the variation in load.

  As shown in FIG. 2, pin holes 8 extending perpendicularly to the flat surfaces 4M and 5M are formed in the connecting portions 4m and 5m at the intersections of the intersecting rod axes 2x and 3x (see FIG. 1). See). The pin 9 shown in FIG. 3 is inserted into the pin hole 8, and retaining rings 9a and 9b (see FIG. 4) are hung on the portion protruding above the joint member 5 and the portion protruding below the joint member 4. For example, it is prevented from coming off.

  By the way, male threads 2p, 2q, 3p, 3q (see FIG. 1) are formed at the opposite ends of the tie rods 2, 3 and the gusset plates are provided at the corners of the grid via the clevis 10 with screw holes. 11 so that it can be attached. The screw fastening portions 2a, 2b, 3a, 3b at the joint member side end with respect to the male screws 2p, 2q, 3p, 3q are male screws having a reverse spiral to them. For example, the male screw at the end of the anti-joint member is a right-hand thread, and that at the end of the joint member is a left-hand screw.

  According to such a configuration, the rods are fastened to the joint member and the clevis 10 simultaneously without rotating the joint member by simply rotating the rods 2 and 3 in one direction using the spanner hooking portion 12 shown in FIG. In addition, a pretension can be applied.

  As shown in FIG. 1, the split rods 2A and 2B are screwed to the joint member 4, and a clevis 10 with a screw hole is attached to the end of the tie rod 2 on the side opposite to the joint member to make a pre-assembled brace assembly. This is disposed between the two gusset plates 11 and 11 facing each other, and the tie rod is expanded and contracted by appropriately rotating the dividing rod, and the hole 10a (see FIG. 3) of the holed clevis 10 is aligned with the hole of the gusset plate 11. Hit the clevis pin 13. Furthermore, an appropriate torque is applied using the spanner hook 12. As shown by the phantom line in FIG. 1, the rear assembly brace is assembled so as to be an assembly 3P contracted to such an extent that the clevis does not hit the gusset plate, and is arranged between the other two gusset plates 11, 11 facing each other. Then, the joint member 5 is brought into close contact with the joint member 4 of the pre-assembled brace.

  To install the rear brace, turn the split rod and push the clevis with holes into the gusset plate. If the pin 8 is inserted into the joint members 4 and 5 and prevented from coming off with a retaining ring (see FIG. 4), the pre-assembled brace and the rear assembled brace are integrated via the joint members 4 and 5. The tie rods 2 and 3 have their axes arranged on the flat surfaces 4M and 5M of any joint member, and each tie rod is placed in a straight state between the gusset plates. Both the hole alignment between the clevis with a hole and the gusset plate and the addition of the pretension are performed by adjusting the length of the tie rod using the spanner hooking portion 12.

  The above-described pin 9 is not necessarily required, but if the joint members 4 and 5 that are brought into close contact with each other are integrated via the pin 9, the joint members 4 and 5 are not separated, and the tie rods 2 and 3 are always provided. Stay in one plane. Further, the joint members 4 and 5 that are in close contact with each other prevent rotation around the rod axis, so that the threaded state between the joint member and the rod does not change, and the pretension applied to the rod does not decrease. . Even when the lattice is distorted due to a middle earthquake or the like, the intersecting joint members 4 and 5 suppress the movement of the rods 2 and 3 through the pins 9. That is, the expansion and contraction of the rods is mutually suppressed due to the presence of the pins that restrict the independent movement of the joint member, and eventually the deformation and expansion of the lattice are suppressed.

  In the above example, it has been shown that the brace is attached to the gusset plate via a clevis with a screw hole. However, although it is only the pre-assembled brace, as shown in FIG. 5, the anti-joint member side end of the tie rod 3 can be welded to the terminal plate 14 and fixed to the gusset plate 11 with bolts 15 or the like. Also in this case, since the axis of the tie rod 3 can be disposed in the same plane as that of the rear brace, almost no uneven force is exerted on the weld 16 applied to the end plate 14, and it is not necessary to increase the welding quality excessively.

  If the screw hole forming portions 5a and 5b at both ends of the joint member 5 are set as reverse threads, and the screws 3a and 3b formed at the opposite ends of the rod are also matched with the spiral direction of the corresponding screw holes, the joint member 5 is turned. Can function as a buckle. Incidentally, the rotation of the turnbuckle of the rear assembly brace is obstructed by the turnbuckle of the front assembly brace, so that the rear assembly brace uses a brace of the type that is rotated through the spanner hooking portion 12 described above.

Figure 6 is a flat surface 4M _L length that allows the cross angle change is an example of a brace with a joint member 5M _L is given. In other words, as represented in FIG. 7, the flat surfaces 4M _L formed in the connecting portion 4m, 5 m, 5M _L is longer. If it does in this way, as shown in FIG. 8, it can use also with respect to the grating | lattice from which a diagonal crossing angle differs.

  In particular, as shown in FIG. 9, when the threaded clevis 10 is employed on the anti-joint member side of the rod 2, it can be swung in the direction of arrow 17 within the same plane with respect to the pre-assembled brace fixed to the lattice. it can. In this case, it is not necessary to shrink the clevis so that it does not hit the gusset plate. The rear assembly brace is also an assembly that is extremely close to the expected length, and the clevis can be placed sideways on the gusset plate and attached easily. Of course, not only in this case, even if the installation position of the gusset plate is slightly deviated, it is possible to mount the gusset plate flexibly so that the change of the crossing angle absorbs it.

  In any of the above-described examples, the joint members 4 and 5 have a round pin hole 8 as shown in FIG. 10A, but FIG. It is a thing. This is applicable when the flat surface is secured for a long time as described above, but in this way, when a large external force is suddenly applied due to a large earthquake or the like, Because it allows displacement, the suddenly attacking energy can be absorbed by lattice deformation as well as any brace elongation. In particular, when the lattice is forced to be deformed in a non-parallelogram shape, the pin can behave as if it is close to one of the long holes.

  As can be seen from the above description, according to the present invention, since the joint member as a turnbuckle or a similar metal fitting is disposed at the intersection of the braces, the symmetry is set centering on a thick and conspicuous one than the tie rod. Therefore, it can be a cross brace that exhibits a high aesthetic appearance. Because it looks good, it can also be introduced in places where people can see it. Conversely, when it is not desired to expose the joint member, the joint member can be hidden by covering only one place in the lattice.

The top view showing an example of the brace structure concerning the present invention. Explanatory drawing related with a coupling member and a clevis, and each thread part screwed by them. The perspective view expanded centering on the coupling member. The perspective view of the state which the rod of each brace has arrange | positioned the axis line in the same surface. The top view of the structure containing the brace which made the anti-joint member side of the tie rod the fixed structure by welding. The top view of the brace structure which lengthened the flat surface in the connection part of a coupling member. The perspective view of the coupling member at the time of giving a long flat surface to a connection part. The top view which shows a mode that the crossing angle of the brace was changed. Explanatory drawing of the operation | movement which inserts a clevis joint in a gusset plate by changing the crossing angle of a brace. Each top view of the joint member which gave how to give pin hole shape differently. The top view which showed an example of the existing brace structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Brace structure, 2, 3 ... Tie rod, 2a, 2b, 3a, 3b ... Screw fastening part, 2p, 2q, 3p, 3q ... Male screw, 2x, 3x ... Rod axis, 4, 5 ... Joint member, 4a, 4b, 5a, 5b ... screw hole forming portion, 4m, 5 m ... connection _{portion, 4M, 5M, 4M L,} 5M L ... flat surface, 6 ... cross site, 8 ... pin hole, 8A ... elongated hole, 9 ... pin, 10 ... Clevis with screw hole, 11 ... Gusset plate, 12 ... Spanner hanger.

Claims (6)

In order to reinforce the lattice structure consisting of column beams, etc.
In order to give tension to the individual braces, a joint member interposed in the middle of the rod is arranged at the intersection of the braces,
In the connecting portion that connects the screw hole forming portions provided at both ends of the joint member so as to screw the end portion of the rod, a flat surface that is in close contact with the connecting portion of the joint member of the other brace that intersects is formed.
The flat surface in any connecting part is on the rod axis extension of the own brace, and when the other connecting part is brought into close contact with the connecting part, any tie rod can be arranged in the same plane. A brace structure characterized by that.   The brace structure according to claim 1, wherein the screw hole forming portions at both ends of the joint member are reverse screws.   3. The brace structure according to claim 1, wherein a pin hole extending perpendicularly to the flat surface is formed in the connecting portion at an axis intersection of the intersecting rods. .   The brace structure according to any one of claims 1 to 3, wherein the flat surface has a length that allows the crossing angle of the joint member to be changed.   The brace structure according to claim 3 or 4, wherein the pin hole is a long hole extending in a rod axis direction of the own brace. The end of the rod opposite to the joint member is provided with a male screw that is attached to a clevis with a screw hole, and the end of the joint member has a screw fastening portion that is reverse to that of the rod, and a spanner hook is provided in the middle of the rod. The brace structure according to any one of claims 1 to 5, wherein the brace structure is provided.