JP5086874B2 - Building damping device - Google Patents

Description

  The present invention relates to a vibration damping device for suppressing building shaking caused by an earthquake, wind, traffic vibration, or the like.

  Conventionally, a vibration damping device that reduces the shaking of a building caused by an earthquake or the like is known (see Patent Documents 1-3).

  In Patent Documents 1 and 2, in a building in which a framework is formed by a ceiling beam material, a floor beam material, and a column material, a damping member is arranged on a brace that is obliquely passed between the ceiling beam material and the floor beam material. A building damping device is disclosed.

Patent Document 3 discloses a vibration energy absorbing damper provided with a bent portion having a substantially U shape in cross section and flat mounting portions on both side edges thereof.
JP 2005-315019 A JP 2001-336303 A JP 2007-10076 A

  However, in the vibration damping devices of Patent Documents 1 and 2, a long axial force material passed between the ceiling beam material and the floor beam material must be used as a brace, and such an axial force material does not buckle. The cross-sectional area required to prevent this is large.

  Further, in order to make the vibration damping member function, it is necessary to increase the rigidity of the frame surrounding the brace so that the brace is not twisted, and the vibration damping device tends to be large and expensive.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a building damping device that can sufficiently exhibit damping performance even with a combination of members having relatively small cross-sectional performance.

  In order to achieve the above object, a vibration control device for a building according to the present invention is a vibration control device for a building in which a framework is formed by a ceiling beam material, a floor beam material, and a column material, and an upper end thereof is the ceiling beam material. A first diagonal member having a lower end connected to the column member and a second diagonal member having an upper end connected to the column member and a lower end connected to the floor beam member below the lower end of the first diagonal member. And at least one end of each of the first diagonal member and the second diagonal member sandwiching an attachment piece fixed to the column member, and via damping members attached to both sides of the attachment piece, respectively. It is characterized by being connected.

  The building damping device of the present invention is a building damping device in which a framework is formed by a ceiling beam material, a floor beam material, and a column material, the upper end being connected to the ceiling beam material, and the lower end being the above-mentioned A first diagonal member connected to the column member; and a second diagonal member having an upper end connected to the column member and a lower end connected to the floor beam member below the lower end of the first diagonal member, At least one end of one diagonal member and the second diagonal member sandwiches attachment pieces fixed to the ceiling beam material or the floor beam material, and via vibration damping members attached to both surfaces of the attachment piece, respectively. It is characterized by being connected.

  Here, the first diagonal member and the second diagonal member are formed by overlapping two axial force members, respectively, and the mounting piece is configured to be sandwiched between the two axial force members. it can.

  A plurality of damping members are arranged on both sides of the mounting piece, and both side edges of the first diagonal member and the second diagonal member are connected to the mounting piece via the damping member, respectively. It may be a configuration.

  Further, the vibration damping member is formed in an arch shape, and one leg portion is fixed to the mounting piece and the other leg portion is fixed to the first diagonal member or the second diagonal member. You can also

  Moreover, it is preferable that the ceiling beam material and the floor beam material are connected by a vertical member arranged adjacent to the upper end of the first diagonal member and the lower end of the second diagonal member.

  Further, the mounting piece is provided with a protrusion protruding in an out-of-plane direction, and the protrusion is inserted into one end of the first diagonal member and the second diagonal member and extends in the axial direction. It can be set as the structure in which the long hole to be formed was formed.

  The vibration damping device for a building according to the present invention configured as described above includes a first diagonal member and a second diagonal member, and one end thereof sandwiches an attachment piece fixed to a column member or a beam member, They are connected via vibration damping members attached to both surfaces thereof.

  For this reason, the length of the diagonal material is short, and even if the diagonal material having a relatively small cross-sectional performance is used, buckling does not occur.

  In addition, since the one end of the diagonal member sandwiches the attachment piece and both surfaces thereof are connected via the vibration damping member, the torsion is absorbed by the vibration damping members on both sides, and the diagonal member is unlikely to be twisted.

  Furthermore, the diagonal member formed by superimposing the two axial force members is arranged with an interval corresponding to the thickness of the mounting piece. For this reason, even if the axial force material has a relatively small cross-sectional performance, the diagonal material combined with the separated axial force materials will have a higher cross-sectional performance, so the diagonal material will buckle or twist. Can be prevented.

  In addition, since both side edges of the diagonal member are connected to the mounting piece via the damping member, the end of the diagonal member is connected by at least four damping members on both sides of the mounting piece and both side edges of the diagonal member. Will be.

  For this reason, even if a force that twists the diagonal member from various directions can be canceled by the damping members, it is possible to prevent excessive stress from being generated in the diagonal member, the mounting piece, and the damping member. Can do.

  Furthermore, if the damping member is formed in an arch shape, it is easy to follow the deformation and can be easily attached, and the damping device can be highly durable against repeated deformation.

  Further, by changing the curvature of the arch, the thickness or width of the material, etc., it is possible to arbitrarily adjust the load resistance, rigidity, and durability against repeated deformation.

  In addition, by arranging diagonal materials whose ends are connected via vibration damping members in the area surrounded by ceiling beam materials, floor beam materials, column materials, and vertical materials, diagonal materials are used in a plane that is difficult to twist. The energy generated by an earthquake or the like can be effectively absorbed.

  In addition, by providing a protrusion on the mounting piece and inserting the protrusion into a slot formed in the end of the diagonal, the axial amplitude along the guide of the protrusion and the elongated hole is generated in the diagonal. Can do. Furthermore, the range in which the vibration damping member is operated can be limited by the size of the long hole.

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

  FIG. 1 is a front view for explaining the structure of a vibration damping device for a building according to the present embodiment, and FIG. 2 is a building unit 1 constituting a unit building (not shown) as a building in which the vibration damping device 20 is arranged. It is a perspective view explaining the structure of.

  First, the structure of the unit building will be described. The unit building is a building such as a detached house constructed by installing a plurality of rectangular box-shaped building units 1 vertically and horizontally as shown in FIG.

  Further, as shown in FIG. 2, the building unit 1 includes four columns 11,... As column members and a ceiling beam as a ceiling beam member passed between the upper ends of the columns 11. 12 and 12 and the wife side beams 12A and 12A, and the floor beams 13 and 13 and the wife side beams 13A and 13A as the floor beam material passed between the lower ends of the columns 11,. A structure 10 is configured. This frame structure 10 includes a rigid frame structure in which a column 11, a ceiling beam 12, and a wife side beam 12A are rigidly joined by welding or the like, and a column 11, a floor beam 13, and a wife side beam 13A are rigidly joined. It has become.

  Further, a plurality of ceiling beams 121,... Are passed between the ceiling beams 12, 12, and braces 122, 122 are passed in an X shape in plan view. Further, a plurality of floor beams 131,... Are passed between the floor beams 13, 13, and a plurality of joists 132,... Are arranged so as to be substantially orthogonal to the floor beams 131. .

  And the damping device 20 is arrange | positioned adjacent to the one pillar 11 of the side surface which attaches the outer wall of this building unit 1. As shown in FIG.

  As shown in FIG. 1, the vibration damping device 20 includes a brace 2A as a first diagonal member having an upper end connected to the ceiling beam 12 and a lower end connected to the vicinity of the center of the column 11, and below the lower end of the brace 2A. The brace 2B as the second diagonal member whose upper end is connected to the column 11 and lower end is connected to the floor beam 13, and the ceiling beam 12 and the floor beam 13 are arranged adjacent to the upper end of the brace 2A and the lower end of the brace 2B. And a vertical frame 5 as a vertical member connecting the two.

  As shown in FIG. 4 (b), the brace 2A uses two C-shaped steels 21 as axial force members, and the main material is configured by overlapping the back surfaces of the webs facing each other. Yes. In addition, the C-shaped steels 21 and 21 are spaced apart by the thickness of the mounting piece 3.

  And the lower end which is one end of this brace 2A is connected with the pillar 11 via the plate-shaped attachment piece 3 fixed to the pillar 11 with the welding part 32, as shown in FIG. At the lower end of the brace 2A, the mounting piece 3 is sandwiched between two C-shaped steels 21 and 21.

  Further, as shown in FIG. 3, the C-shaped steel 21 sandwiching the mounting piece 3 is connected to the mounting piece 3 via dampers 4 and 4 as vibration damping members, respectively.

  The damper 4 is preferably formed of a material having high durability against repeated deformation and excellent energy absorption performance. For example, a material mainly composed of metal such as iron, lead, tin, copper, aluminum, or an alloy thereof can be used. Also, a resin material such as plastic having excellent elastic performance can be used.

  As shown in FIG. 4A, the damper 4 of the present embodiment is a member obtained by forming a mild steel plate such as carbon steel or stainless steel into an arch shape, and leg portions 4a and 4a serving as both side edges are attached to the mounting piece 3. And welded to the surface of the C-shaped steel 21 by welds 41 and 41, respectively.

  Further, as shown in FIG. 4B, the dampers 4 are respectively attached to both sides of the attachment piece 3 and the four side edges of the C-shaped steels 21 and 21 that are in contact with the respective surfaces. The positional relationship between the four dampers 4,... Is arranged symmetrically with respect to the C-shaped steel 21 on the same surface of the mounting piece 3, and symmetrically with respect to the mounting piece 3 with the mounting piece 3 interposed therebetween. preferable. In addition, in this Embodiment, although the one damper 4 was attached with respect to the one side edge of the C-shaped steel 21, it is not limited to this, The several damper 4 is attached with respect to one side edge You can also

  Further, an elongated hole 22 extending in the axial direction is formed at the end of the brace 2A closer to the column 11 than the damper 4 as shown in FIG. Then, a bolt 31 as a protruding portion protruding in the out-of-plane direction of the mounting piece 3 is inserted into the long hole 22. That is, one end of the brace 2A can slide in the axial direction within the range of the long hole 22.

  On the other hand, the upper end, which is the other end of the brace 2A, is connected to a connecting plate 6 fixed to the ceiling beam 12 via a welded portion 61, as shown in FIG.

  The brace 2B has the same configuration except that the lower end of the brace 2A is the upper end of the brace 2B, the upper end of the brace 2A is the lower end of the brace 2B, and the ceiling beam 12 is the floor beam 13. Is omitted.

  The vertical frame 5 is erected substantially parallel to the column 11 at a position where the braces 2A and 2B having a square shape in front view can be accommodated, in other words, at a position opposite to the column 11 across the braces 2A and 2B. The The vertical frame 5 has an upper end connected to the ceiling beam 12 via the welded portion 51 and a lower end connected to the floor beam 13 via the welded portion 51.

  Next, the operation of the building vibration control device 20 according to the present embodiment will be described.

  The building vibration damping device 20 of the present embodiment configured as described above includes the first brace 2A and the second brace 2B, and one end of each of the mounting pieces 3 and 3 fixed to the column 11. And are connected via dampers 4 attached to both surfaces of the mounting pieces 3 and 3, respectively.

  Since these braces 2A and 2B are members that are obliquely passed between the ceiling beam 12 or the floor beam 13 and the approximate center of the column 11, they are usually passed between the ceiling beam 12 and the floor beam 13. The length is shorter than the brace material.

  Since the braces 2A and 2B are axial force members that mainly resist the axial load, if the length is shortened, buckling is less likely to occur even if the cross-sectional area is reduced.

  Further, these braces 2A and 2B are formed by overlapping two C-shaped steels 21 and 21 while being separated by the thickness of the mounting piece 3. For this reason, since the cross-sectional secondary moment is increased and the rigidity is increased, the braces 2A and 2B can be manufactured at low cost by a member having a relatively low cross-sectional performance. Further, since the brace 2A, 2B becomes harder to twist if the rigidity is increased, vibration generated by an earthquake or the like can be efficiently input to the dampers 4,.

  Furthermore, since the ends of the braces 2A and 2B sandwich the mounting piece 3 and both surfaces thereof are connected via the dampers 4,..., When the force in the direction in which the braces 2A and 2B are twisted acts, The dampers 4 on both sides of the piece 3 are deformed.

  For this reason, the energy by the vibration which generate | occur | produced by the earthquake etc. can be absorbed by several damper 4, ..., and the load accompanying a twist does not act easily on braces 2A and 2B.

  In particular, both side edges of the braces 2A, 2B are connected to the mounting piece 3 via dampers 4,..., So that four dampers 4 on both sides of the mounting piece 3 and both side edges of the C-shaped steel 21 are provided. ..., the ends of the braces 2A and 2B are connected.

  Therefore, even if the braces 2A and 2B are twisted in any direction, the deformation can be canceled by the dampers 4 arranged at the four locations, so that excessive stress is applied to the braces 2A and 2B. It can prevent generating in the piece 3 and the damper 4. FIG.

  Further, if the braces 2A and 2B have a structure in which twisting is unlikely to occur, it is possible to reduce the cross-sectional performance of the vertical frame 5 and the like serving as a structural member in a region that accommodates the braces 2A and to manufacture the inexpensive vibration damping device 20. it can.

  Furthermore, if the damper 4 is formed in an arch shape, it is easy to follow the deformation, and even if there is a slight error in the mounting position of the mounting piece 3 and the C-shaped steel 21, it can be easily mounted by absorbing the error. it can.

  In addition, since the arch shape is a shape with little constraint on deformation, the damper 4 having high durability against repeated deformation can be obtained. Furthermore, such a damper 4 can arbitrarily adjust load resistance, rigidity, durability against repeated deformation, and the like by changing the curvature of the arch, the thickness or width of the material, and the like.

  Furthermore, if it is a rectangular region surrounded by the ceiling beam 12, the floor beam 13, the column 11, and the vertical frame 5, an in-plane region in which the same surface is held and hardly twisted can be formed. And by arranging braces 2A, 2B whose ends are connected via dampers 4,... Inside thereof, vibration generated in the building unit 1 due to an earthquake or the like is efficiently transmitted to the braces 2A, 2B. Can be made. As a result, the braces 2A, 2B are swung in the axial direction and the dampers 4, ... are deformed, so that the energy due to the earthquake can be effectively absorbed.

  Moreover, the bolt 31 is attached to the attachment piece 3, and the bolt 31 is inserted into the elongated hole 22 formed in the end portion of the braces 2A and 2B, so that the longitudinal amplitude is applied to the braces 2A and 2B using the elongated hole 22 as a guide. And the dampers 4,... Can be effectively operated.

  Further, when the bolt 31 comes into contact with the end of the long hole 22, the braces 2A and 2B cannot slide any more in the same direction, so that the deformation of the dampers 4,. . That is, by restricting the size of the dampers 4,... That can be continuously deformed in one direction, it is possible to prevent the dampers 4,. Also, if the amount of movement in one direction is limited, it becomes easier to move in the opposite direction, so that the dampers 4,... .

  Hereinafter, an example of a mode different from the above-described embodiment will be described. The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  FIG. 5 is a perspective view illustrating the configuration of the vibration damping device 70 described in this embodiment.

  The vibration damping device 70 has a brace 72A as a first diagonal member having an upper end connected to the ceiling beam 12 and a lower end connected to the vicinity of the center of the column 11, and an upper end connected to the column 11 below the lower end of the brace 72A. The lower end is mainly constituted by a brace 72B as a second diagonal member connected to the floor beam 13. Here, the braces 72 </ b> A and 72 </ b> B are coupled to the column 11 by being pin-joined 723 and 723 to corner portions of a rectangular plate-shaped coupling plate 71 fixed to the column 11.

  Moreover, as shown in FIG. 6, the brace 72A uses two C-shaped steel 721 as an axial force material, and the main material is configured by overlapping the back surfaces of the webs facing each other. In addition, the C-shaped steels 721 and 721 are spaced apart by the thickness of the mounting piece 73.

  And the upper end which is one end of this brace 72A is connected with the ceiling beam 12 via the attachment piece 73 fixed to the ceiling beam 12, as shown in FIG. At the upper end of the brace 72A, the mounting piece 73 is sandwiched by two C-shaped steels 721 and 721.

  In addition, a fixing plate 732 having substantially the same width as the flange 12 a of the ceiling beam 12 is joined to the mounting piece 73, and the mounting piece 73 is attached to the ceiling beam 12 via the fixing plate 732.

  Further, as shown in FIG. 6, the C-shaped steel 721 sandwiching the mounting piece 73 is connected to the mounting piece 73 via dampers 4 and 4 as damping members, respectively. This damper 4 is respectively attached to both sides of the attachment piece 73 and four edges on both sides of the C-shaped steels 721 and 721 that are in contact with the respective surfaces, as in the above embodiment.

  Further, an elongated hole 722 extending in the axial direction is formed at the end of the brace 72A on the ceiling beam 12 side of the damper 4 as shown in FIG. The elongated hole 722 is inserted with a pin 731 as a protruding portion protruding in the out-of-plane direction of the mounting piece 73. That is, one end of the brace 72A can slide in the axial direction within the range of the long hole 722.

  The brace 72B has the same configuration except that the upper end of the brace 72A is the lower end of the brace 72B, the lower end of the brace 72A is the upper end of the brace 72B, and the ceiling beam 12 is the floor beam 13. Is omitted.

  Next, the operation of the vibration damping device 70 for a building according to the present embodiment will be described.

  The building damping device 70 of the present embodiment configured as described above includes a first brace 72A and a second brace 72B, one end of which is fixed to the ceiling beam 12 and the floor beam 13, respectively. The attachment pieces 73 and 73 are clamped and connected via dampers 4 attached to both surfaces of the attachment pieces 73 and 73, respectively.

  For this reason, the lengths of the braces 72A and 72B are short, and even if the braces 72A and 72B having a relatively small cross-sectional performance are used, buckling does not occur. In particular, depending on the size of the connecting plate 71, the lengths of the braces 72A and 72B can be further shortened.

  Further, if the lengths of the braces 72A and 72B are shortened, the influence due to the deformation in the out-of-plane direction such as torsion can be reduced.

  Other configurations and functions and effects are substantially the same as those in the above-described embodiment, and thus description thereof is omitted.

  The best embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment and example, and the design does not depart from the gist of the present invention. Such modifications are included in the present invention.

  For example, in the above-described embodiment, the dampers 4,... Are interposed in the connection between the braces 2A, 2B and the pillar 11. However, the present invention is not limited to this. For example, one brace 2A (2B) The damper 4 may be interposed in the connection with the ceiling beam 12 (floor beam 13). On the other hand, in the above-described embodiment, the dampers 4,... Are interposed in the connection between the braces 72A and 72B and the ceiling beam 12 or the floor beam 13. However, the present invention is not limited to this. With respect to 72B), the damper 4 may be interposed in the connection with the pillar 11.

  Moreover, in the said embodiment, although the attachment pieces 3 and 3 were provided in two places of the approximate center of the pillar 11, it is not limited to this, It is made to integrate similarly to the connection plate 71 of the said Example. Also good. Furthermore, in the said Example, although the connection plate 71 was provided in one place of the approximate center of the pillar 11, it is not limited to this, It is each two places similarly to the attachment pieces 3 and 3 of the said embodiment. It may be provided.

  Moreover, in the said embodiment and the said Example, although braces 2A, 2B, 72A, 72B comprised two C-shaped steels 21 and 721, it is not limited to this, For example, only an edge part is comprised. The structure may be such that the mounting pieces 3 and 73 can be sandwiched between two forks.

It is a front view explaining the structure of the vibration damping device of the building of the best embodiment of this invention. It is a perspective view explaining the structure of the building unit by which the damping device is arrange | positioned. It is the elements on larger scale explaining the detail of the structure of the connection part of a brace and a pillar. (A) is a partial expansion perspective view explaining the structure which connects a C-shaped steel and an attachment piece with a damper, (b) is sectional drawing explaining the structure which connects a brace and an attachment piece with a damper. It is a perspective view explaining the structure of the damping device of an Example. It is the elements on larger scale explaining the detail of the structure of the connection part of the brace and ceiling beam of an Example.

Explanation of symbols

10 Frame structure 11 Column (column material)
12 Ceiling beams (ceiling beams)
13 Floor beams (floor beams)
20 Damping device 2A Brace (first diagonal)
2B brace (second diagonal)
21 C-shape steel (axial force material)
22 Long hole 3 Mounting piece 31 Bolt (projection)
4 Damper (damping member)
4a Leg 5 Vertical frame (vertical material)
70 Damping device 72A Brace (first diagonal)
72B brace (second diagonal)
721 C-shape steel (axial force material)
722 Long hole 73 Mounting piece 731 Pin (protrusion)

Claims (7)

A vibration control device for a building in which a framework is formed by ceiling beam materials, floor beam materials, and column materials,
A first diagonal member having an upper end connected to the ceiling beam member and a lower end connected to the column member, and an upper end connected to the column member and a lower end connected to the floor beam member below the lower end of the first diagonal member. A second diagonal material,
At least one end of each of the first diagonal member and the second diagonal member sandwiches an attachment piece fixed to the column member, and is connected via a damping member attached to each of both surfaces of the attachment piece. A building damping device characterized by that. A vibration control device for a building in which a framework is formed by ceiling beam materials, floor beam materials, and column materials,
A first diagonal member having an upper end connected to the ceiling beam member and a lower end connected to the column member, and an upper end connected to the column member and a lower end connected to the floor beam member below the lower end of the first diagonal member. A second diagonal material,
At least one end of each of the first diagonal member and the second diagonal member sandwiches an attachment piece fixed to the ceiling beam material or the floor beam material, and is attached to both surfaces of the attachment piece. Damping device for buildings characterized by being connected via   The first diagonal member and the second diagonal member are formed by overlapping two axial force members, respectively, and the mounting piece is sandwiched between the two axial force members. The building vibration control device according to 2.   A plurality of the damping members are arranged on both sides of the mounting piece, and both side edges of the first diagonal member and the second diagonal member are connected to the mounting piece via the damping member, respectively. The building vibration-damping device according to any one of claims 1 to 3.   The damping member is formed in an arch shape, and one leg portion is fixed to the mounting piece, and the other leg portion is fixed to the first diagonal member or the second diagonal member. The building vibration control device according to any one of claims 1 to 4.   6. The ceiling beam member and the floor beam member are connected by a vertical member disposed adjacent to an upper end of the first diagonal member and a lower end of the second diagonal member. The building vibration control device according to any one of the above.   The mounting piece is provided with a protruding portion protruding in an out-of-plane direction, and the protruding portion is inserted and extended in the axial direction at one end of the first diagonal member and the second diagonal member. The building damping device according to any one of claims 1 to 6, wherein a long hole is formed.

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