JP2007040063A - Bracing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bracing structure having a pair of diagonal braces crossed each other in which a tensile force acts to a first brace and a second brace is subjected to a compressive force, but the second brace is capable of withstanding the compressive force even though the first brace is subjected to a deformation due to an elastic elongation. <P>SOLUTION: Braces 2 and 3 respectively have expansion mechanisms 7 making the brace expandable within a predetermined dimensional range. When the first brace is subjected to a tensile force and makes an elastic deformation beyond its expandable range by the expansion mechanisms, the second brace is capable of taking a contracting action by the expansion mechanism within its contracting range. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a brace structure.

  A brace structure provided in a X-shape or a V-shape has been used for a long time. Yes.

In addition, the braces of these pairs are provided with an expansion / contraction function in the direction of the brace axis, and by causing each brace to perform an expansion / contraction operation by the expansion / contraction mechanism, vibration energy is absorbed during an earthquake to attenuate the vibration. Things are also provided.
Japanese Patent Laid-Open No. 10-220062

  However, if one of the braces stretches by elastic deformation beyond the extension range of the extension mechanism due to the tensile force, the other brace tries to shorten beyond the range that can be reduced by the extension mechanism. In this case, the brace may buckle and project in the out-of-plane direction, causing various inconveniences.

  In view of the above problems, the present invention provides a brace structure including a pair of braces that are extended in directions intersecting each other and in which a compressive force acts on the other when a tensile force acts on one. Another object of the present invention is to provide a brace structure capable of preventing the other brace from buckling when the one brace is elastically stretched and deformed by a tensile force.

The above-mentioned problem is provided with a pair of braces that extend in directions crossing each other, and when a tensile force acts on one, a compressive force acts on the other,
Each brace consists of a brace with an expansion / contraction mechanism that can expand and contract within a predetermined size range.
It is characterized in that in the process where one brace is pulled and elastically deforms beyond the stretchable range by the telescopic mechanism, the other brace performs a shortening operation within the shortenable range by the telescopic mechanism. This is solved by the brace structure (first invention).

  In this brace structure, each brace is composed of a brace with an expansion / contraction mechanism that can be expanded and contracted within a predetermined size range, and one of the braces is stretched and elastically deforms beyond the extendable range of the expansion / contraction mechanism. In the process, the other brace buckles when the other brace is elastically deformed by one tensile force due to the combination of the other brace performing a shortening operation within the range that can be shortened by the expansion / contraction mechanism. Is effectively prevented.

In the brace structure of the first invention, each brace with an expansion / contraction mechanism includes two belt-like brace plates, one end of one belt-like brace plate is connected to one side of the structural portion, and the other belt-like brace plate is One end is connected to the other side of the structural part,
The other end of the one belt-like brace plate extends to a position near one end connection portion of the other belt-like brace plate, and the other end of the other belt-like brace plate is near one end connection portion of the one belt-like brace plate. It is extended to a position, and the belt-like brace plates face each other and are overlapped,
Both belt-like brace plates are joined by bolts at a plurality of locations in the brace axis direction at their overlapping portions, and the bolt through holes of either one or both belt-like brace plates are composed of elongated holes extending in the brace axis direction, It is preferable that the brace is expanded and contracted using the long hole (second invention).

  In this brace structure, the brace is provided with two strip-like brace plates, both of which are made of a long material slightly shorter than the length of the brace, and are substantially overlapped with each other in the brace axial direction. Since the braces are joined with bolts and the braces are expanded and contracted by the long holes in the bolt joints, it is possible to maintain the linear state of the braces within the range that can be shortened by the expansion and contraction mechanism when a compressive force is applied. Can be realized with a simple structure, and it is difficult to buckle the brace even though a belt-like brace plate is used. it can.

Further, the present invention is provided with a pair of braces which are extended in directions intersecting each other and a compressive force is applied to the other when a tensile force is applied to one,
Each brace consists of a brace with an expansion / contraction mechanism that can expand and contract within a predetermined size range.
Each brace with a telescopic mechanism includes two belt-like brace plates, one end of one belt-like brace plate is connected to one side of the structural portion, and one end of the other belt-like brace plate is connected to the other side of the structural portion. Connected to the side,
The other end of the one belt-like brace plate extends to a position near one end connection portion of the other belt-like brace plate, and the other end of the other belt-like brace plate is near one end connection portion of the one belt-like brace plate. It is extended to a position, and the belt-like brace plates face each other and are overlapped,
Both belt-like brace plates are joined by bolts at a plurality of locations in the brace axis direction at their overlapping portions, and the bolt through holes of either or both belt-like brace plates are composed of elongated holes extending in the brace axis direction, Also included is a brace structure in which the brace is configured to expand and contract using the long holes (third invention).

  That is, according to this brace structure, the range that can be shortened by the expansion / contraction mechanism when a compressive force is applied, regardless of whether the other brace is buckled or not when the other brace is elastically deformed by a tensile force. The holding of the straight state of the brace can be made mechanically stable, and it can be realized with a simple structure, and the brace is seated while using a belt-like brace plate. It can be made difficult to bend.

  Since the present invention is as described above, it is possible to prevent the other brace from buckling when the one brace is elastically extended and deformed by a tensile force.

  In addition, maintaining the straight state of the brace within the range that can be shortened by the expansion / contraction mechanism when a compressive force is applied, regardless of whether the other brace is buckled or not when the other brace is elastically deformed by tension. Can be realized with a simple structure, and it is possible to make the brace difficult to buckle while using a belt-like brace plate.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  In the brace structure of the embodiment shown in FIG. 1, 1 is a square annular panel frame as a structural part, 2 and 3 are a pair of braces, and the braces 2 and 3 are X in the interior of the panel frame 1 surrounded by the frame. It is prepared in the shape.

  Each brace 2 and 3 is composed of a brace with an expansion / contraction mechanism, and as shown in FIG. 2, includes two belt-like brace plates 4 and 4, one end of one belt-like brace plate 4 being one of the diagonals of the panel frame. The other end of the brace brace plate 4 is rotatably connected to the plate 5 provided on the other side of the panel frame with a bolt 6 so as to be rotatable. The other end of the one band-shaped brace plate 4 is extended to a position near one end connecting portion of the other band-shaped brace plate 4, and the other end of the other band-shaped brace plate 4 is also the one band-shaped brace plate. The belt-shaped brace plates 4 and 4 are overlapped with each other facing each other.

  And in the overlapping part, both strip | belt-shaped brace boards 4 and 4 are couple | bonded with the volt | bolt 6 ... in the brace axial direction, and the bolt through-hole 7 ... of one strip | belt-shaped brace board 4 is the length extended in a brace axial direction. It consists of holes, and the braces 2 and 3 are extended and contracted in the direction of the brace axis using the long holes 7. In the present embodiment, the bolt through holes 8 of the other belt-like brace plate 4 are round holes, and the belt-like brace plate 4 moves integrally with the bolts 6 in the direction of the brace axis. Has been made. In addition, you may make it comprise the bolt through-hole 8 ... of the said other strip | belt-shaped brace board 4 with a long hole.

  This allows the brace to use a bracing plate, but can maintain the linear state of the brace in a shortenable range by the expansion and contraction mechanism when a compression force is applied, and is mechanically stable. This can be realized with a simple structure and advantageously in terms of cost, and the brace 2 can hardly be buckled against compression within a shortenable range.

  Further, in the present embodiment, the pair of braces 2 and 3 are arranged such that one belt-like brace plate 4 of the other brace 3 is located between the belt-like brace plates 4 and 4 of the one brace 2 at the portion where they intersect. In each brace 2, 3, on both sides sandwiching the intersection, strip-shaped spacer plates 9,... Are disposed between the strip-shaped brace plates 4, 4 at the overlapping portions of the strip-shaped brace plates 4, 4. The bolts 6 are tightened so as to sandwich the spacer plates 9. The bolt through holes 8 of the belt-like spacer plate 9 are round holes, and the belt-like spacer plate 9 moves integrally with the bolts 6 in the brace axis direction.

  And in the part which a pair of braces 2 and 3 cross | intersect, the two strip | belt-shaped brace boards 4 ... of each brace 2 and 3 are the lamination | stacking states, and these are couple | bonded with the volt | bolt 6. FIG. In addition, the through-hole which lets a volt | bolt is the combination of the long hole 7 and the round hole 8 similarly to the above.

  In the present embodiment, attenuation means for attenuating vibration during vibration is provided. That is, the first damping means is provided with damping means using the rotational displacement of the connecting portion between the ends of the braces 2 and 3 and the plates 5... By tightening the bolt 6 at the connecting portion. The end portion of the plate and the plate 5 are in frictional contact with each other, or a viscous material 10 such as tape, paint, plating, or the like is sandwiched between the end portion of the plate 5 and the plate 5. The rotational displacement operation of the braces 2 and 3 is attenuated.

  Further, as the second attenuating means, an attenuating means using the expansion / contraction operation of the braces 2, 3 with the expansion / contraction mechanism is provided, and the strip-shaped brace plates 4, 4 of the braces 2, 3 are connected to each other via the strip-shaped spacer plates 9 ... Then, the belt-like brace plate 4 and the belt-like spacer plate 9 are brought into frictional contact with each other by tightening them with the connecting bolts 6... And the viscous material 10 made of tape, paint, plating or the like is sandwiched between them. The expansion and contraction of the braces 2 and 3 is attenuated by the viscosity.

  Further, as the third damping means, a damping means using the relative rotational displacement operation of the braces 2 and 3 is also provided at the intersection of the braces 2 and 3, and the belt-like brace plates 4 and 4 are brought into frictional contact with the bolts 6. The viscous material 10 made of tape, paint, plating or the like is sandwiched between them, and the relative rotational displacement operation of the braces 2 and 3 is attenuated by friction and viscosity.

In the brace structure of the present embodiment, as shown in FIGS. 4 (A-1) and (A-2), the brace 2 does not perform the expansion / contraction operation by the expansion / contraction mechanism, as shown in FIGS. 4 (b) (c), the rotational displacement of the connecting portion between the ends of the braces 2, 3 and the plates 5 ... and the relative rotational displacement at the intersection of the braces 2, 3 occur. The vibration is damped by the first and third damping means,
Further, as the second stage, when a larger vibration occurs, as shown in FIGS. 5 (A-1) and (A-2), the expansion and contraction of the braces 2 and 3 occurs, and the vibration is generated by the second damping means. Attenuated,
Further, as a third stage, when a large vibration occurs that is larger than that, i.e., exceeds the range in which the braces 2 and 3 can expand and contract in the tension direction, FIG. 5 (B-1) (B-2). As shown in FIGS. 6A and 6B, the braces 2 and 3 are elastically deformed in the pulling direction so as to resist vibrations.
The resistance to vibration is made to change finely in multiple stages according to the magnitude of the vibration.

  Then, when proceeding further to the core part of the present invention, in the brace structure described above, as shown in FIGS. 3 (a) and 3 (b), the bolt 6 that joins the two strip brace plates is The band-shaped brace plates are coupled to each other at a position deviated from the center position in the longitudinal direction of the long hole 7 to each other, and FIG. 3 (C-1) (C-2) and FIG. As shown in (b), the length dimension that can be shortened by the telescopic mechanism when the braces 2 and 3 are compressed is larger than the length dimension that can be stretched by the telescopic mechanism when the braces 2 and 3 are pulled. In the process in which one brace 2 is pulled and elastically deforms beyond the extendable range by the expansion / contraction mechanism, the other brace 3 performs a shortening operation in the shortenable range by the expansion / contraction mechanism. Has been made.

  This prevents the other brace from buckling when the one brace is elastically stretched and deformed by a tensile force, thereby eliminating the disadvantages associated with the buckling of the compression side brace. It is preferable that the other brace is set so as to reach the shortenable limit position by the telescopic mechanism immediately before one brace yields beyond the elastic limit by pulling.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. In the above embodiment, a brace structure of a panel type in which braces are put in a square annular panel is shown, but it can also be used as a brace structure incorporated in a column beam frame of a building in a non-panel manner, Moreover, it can also be used as a brace structure for floors and can be used for various applications. In the above embodiment, the brace structure is shown in which the braces intersect each other in an X shape. However, it may be V-shaped or the like. In short, when a tensile force is applied to one side, the compression force is applied to the other side. Any brace structure provided with a pair of braces that act on each other may be used. In the above-described embodiment, the case where the damping means is provided and the brace functions as a damper is shown. However, in the first to third inventions, whether or not the damping means is incorporated is arbitrary.

It is a front view which shows the brace structure of embodiment. Fig. 1 (a) is a cross-sectional front view of the brace, and Fig. (B) is an exploded cross-sectional front view of the brace. Fig. (A) is a front view of the main part of the brace structure, Fig. (B) is a front view showing the positional relationship between the long holes and bolts in the brace, and Fig. (C-1) and Fig. (C-2) are diagrams of the brace. It is a front view which shows the positional relationship of a long hole and a volt | bolt in an expansion-contraction operation state. The brace structure provided with damping means shows the operating state at the time of the minute vibration of the first stage. FIGS. (A-1) and (B-2) are cross-sectional front views of the brace, respectively. The front view in the connection part of a panel frame and a brace and a figure (C) are the front views in the cross connection part of a brace. FIG. 1 (a-1) and FIG. 1 (b-2) are cross-sectional front views of the brace showing the operating state in the second stage, which is a greater vibration of the brace structure, respectively. FIG. These are the cross-sectional front views of a brace which show the operation state in the 3rd stage which is a further large vibration of a brace structure, respectively. FIG. 1 (a) and FIG. 2 (b) are front views of relevant parts showing the operating state of the brace structure in the third stage.

Explanation of symbols

1. Panel frame (structure part)
2, 3 ... brace 4 ... strip brace plate 5 ... plate (structure part)
6 ... Bolt 7 ... Long hole (extension mechanism)

Claims (3)

A pair of braces are provided that extend in directions crossing each other, and when a tensile force acts on one, a compressive force acts on the other.
Each brace consists of a brace with an expansion / contraction mechanism that can expand and contract within a predetermined size range.
It is characterized in that in the process where one brace is pulled and elastically deforms beyond the stretchable range by the telescopic mechanism, the other brace performs a shortening operation within the shortenable range by the telescopic mechanism. Brace structure to do. Each of the braces with an expansion / contraction mechanism includes two belt-like brace plates, one end of one belt-like brace plate is connected to one side of the structural portion, and one end of the other belt-like brace plate is the other of the structural portion. Connected to the side of
The other end of the one belt-like brace plate is extended to a position near one end connecting portion of the other belt-like brace plate, and the other end of the other belt-like brace plate is near one end connecting portion of the one belt-like brace plate. It is extended to a position, and the belt-like brace plates face each other and are overlapped,
Both belt-like brace plates are formed by connecting a plurality of portions in the brace axis direction with bolts in the overlapping portions thereof, and bolt holes of either one or both belt-like brace plates are elongated holes extending in the brace axis direction, The brace structure according to claim 1, wherein the brace expands and contracts using the long hole. A pair of braces are provided that extend in directions crossing each other, and when a tensile force acts on one, a compressive force acts on the other.
Each brace consists of a brace with an expansion / contraction mechanism that can expand and contract within a predetermined size range.
Each brace with a telescopic mechanism includes two belt-like brace plates, one end of one belt-like brace plate is connected to one side of the structural portion, and one end of the other belt-like brace plate is connected to the other side of the structural portion. Connected to the side,
The other end of the one belt-like brace plate extends to a position near one end connection portion of the other belt-like brace plate, and the other end of the other belt-like brace plate is near one end connection portion of the one belt-like brace plate. It is extended to a position, and the belt-like brace plates face each other and are overlapped,
Both belt-like brace plates are joined by bolts at a plurality of locations in the brace axis direction at their overlapping portions, and the bolt through holes of either or both belt-like brace plates are composed of elongated holes extending in the brace axis direction, A brace structure characterized in that the brace is expanded and contracted using the elongated holes.

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