JP5324197B2 - Brace damper - Google Patents

Description

  The present invention relates to a brace damper that is installed in a building frame to attenuate vibration energy applied to the building.

  Conventionally, a brace damper has been installed in a building frame in order to absorb and attenuate vibration energy applied to the building due to disturbances such as earthquakes and strong winds and to impart vibration control performance to the building.

  In this type of brace damper, as disclosed in Patent Document 1, a pair of channel steels (stiffening members) are disposed apart with the flanges facing outward and the webs facing each other. In addition, an odd number of a plurality of steel plates (plates) are laminated in parallel and spaced between the webs, and between the grooved steel and the outermost steel plate (outermost steel plate) and between adjacent steel plates. Some of them are configured with a viscoelastic body interposed therebetween. Further, on both ends in the axial direction of the brace damper, connecting members (joining members) formed by connecting a rib plate to the main body plate and having a cross-shaped cross section are provided, and one connecting member is formed as a pair of grooves. It connects with each one end part of the steel plate distribute | arranged every other among steel and several steel plates, and connects the other connection member to the other end part of the remaining steel plates, and is comprised.

  The brace damper constructed in this way is installed in the frame by connecting (joining) a pair of connecting members to the frame of the building, the vibration energy acts on the building, the frame is relatively displaced, and the The outer steel plate and the adjacent steel plates are relatively displaced from each other in the axial direction of the brace damper. And the viscoelastic body interposed between the grooved steel and the outermost steel plate and between the adjacent steel plates absorbs and attenuates vibration energy while shearing.

At this time, the buckling of the steel sheet is prevented by a pair of groove steels provided so as to sandwich the plurality of steel sheets and the viscoelastic body.
Japanese Patent Laid-Open No. 10-220062

  However, in the conventional brace damper described above, a pair of groove steels are provided with the flange portions facing each other outward, that is, with the webs facing each other, that is, with the pair of groove steels arranged back to back, and further connected Since the member is formed in a cross-shaped cross section, the number of parts is large, and it is necessary to weld out-of-plane ribs, resulting in an increase in the number of assembly steps. In addition, the brace damper has a complicated shape, and there is a risk of deteriorating the aesthetics when installed in a building frame.

  Furthermore, it has been desired to improve the rigidity (mechanical performance) against buckling of the steel plate.

  On the other hand, even in the same building, the floor height and span of the floor where the brace damper is installed are different, and the interval between the frames of the building where the brace damper is joined may be different. In the conventional brace damper, the connecting member is formed in a cross shape in cross section and the rib plate ensures the out-of-plane rigidity. For this reason, it was difficult to adjust the length of the connecting member to adjust the brace damper to a length corresponding to the interval of the building frame in order to secure the out-of-plane rigidity.

  In view of the above circumstances, the present invention can improve the mechanical performance of the conventional brace damper, can be easily assembled, does not impair the aesthetics at the time of installation, and the length of the brace damper. It is an object of the present invention to provide a brace damper that can flexibly cope with the adjustment of the above.

  In order to achieve the above object, the present invention provides the following means.

The brace damper of the present invention is a brace damper for dampening vibration energy acting on a building installed in a building frame, wherein the damper main body is disposed on both sides of the first H-shaped steel web. A pair of stiffening members for laminating steel plates and preventing buckling of the steel plates are placed between the steel plate and the first H-section steel web and between the upper and lower flanges of the first H-section steel. The viscoelastic body is interposed between the steel plate and the first H-shaped steel web and between the steel plate and the stiffening member, and the stiffening member has one end at the first H The one end of the section steel is provided on the inner side in the axial direction and the other end is disposed on the outer side in the axial direction with respect to the other end of the first H-section steel, and the one end side is provided on the web of the first H-section steel. The steel plate is connected to one end. The other end of the stiffening member is disposed on the inner side in the axial direction and the other end is disposed on the outer side in the axial direction with respect to the other end of the stiffening member. is the 2H form steel, the insert a one end-side web between the other end of the pair of steel plates, provided by connecting the web to the other end of the pair of steel plate Rutotomoni, wherein The steel plate and the stiffening member in a state where a predetermined gap is opened between one end of the second H-section steel and the other end of the first H-section, and between the upper and lower flanges of the second H-section steel It arrange | positions in the state which accommodated the other end part side .

  In the present invention, since the steel plate and the stiffening member are provided so as to sandwich the first H-shaped steel web, it is possible to ensure the rigidity against buckling by the first H-shaped steel in addition to the stiffening member. Become. As a result, the mechanical performance can be reliably improved as compared with the conventional brace damper.

  In addition, the brace damper (damper body) is configured by placing the steel plate and the stiffening member between the upper and lower flanges of the 1H section steel, so that it can be inserted between the upper and lower flanges of the 1H section steel during assembly. The steel plate and the stiffening member can be positioned. Further, the second H-section steel can be positioned by inserting a web between the other end portions of the pair of steel plates. Moreover, the steel plate and the stiffening member are housed between the upper and lower flanges of the first H-section steel to form a brace damper, and the H-section steel (first H-section steel and second H-section steel) is used as the main member. Compared with the conventional brace damper, the number of members can be reduced and the appearance can be improved.

  Also, the length on the one end side of the first H-section steel that extends outward in the axial direction from the one end of the pair of stiffening members (the length of the first H-section steel) and / or the other end of the pair of steel plates The length of the brace damper can be adjusted according to the interval of the building frame by adjusting the length of the other end of the second H-section that extends outward in the axial direction (the length of the second H-section). It can be easily adjusted.

  In the brace damper of the present invention, a length adjusting member made of H-section steel is provided so as to be connected to one end of the first H-section and / or the other end of the second H-section. It is desirable.

  In this invention, it is possible to easily adjust the length of the brace damper according to the interval of the frame of the building by attaching the length adjusting member without changing the length of the damper main body. Moreover, since the length adjusting member is H-shaped steel, the appearance of the brace damper is good, and there is no risk of deteriorating the aesthetics when installed in the building frame.

  According to the brace damper of the present invention, it is possible to ensure the rigidity against buckling also by the first H-shaped steel in addition to the stiffening member, and to improve the mechanical performance reliably as compared with the conventional brace damper. Is possible.

  Moreover, at the time of assembly, it inserts between the upper and lower flanges of the first H-section steel to position the steel plate and the stiffening member, and inserts a web between the other end portions of the pair of steel plates to insert the second H-section steel. Positioning can be performed. Furthermore, the steel plate and the stiffening member are placed between the upper and lower flanges of the first H-section steel to form a brace damper, and the H-section steel (the first H-section steel and the second H-section steel) is used as the main member. Compared with the brace damper, the number of members can be reduced and the appearance can be improved. As a result, it is possible to easily assemble the brace damper, and it is possible to eliminate the risk of damaging the aesthetics when installed in the building frame.

  Moreover, by adjusting the length of the first H-section steel and the length of the other end of the second H-section, or by attaching the length adjusting member without changing the length of the damper main body, the appearance is not impaired. It makes it possible to easily adjust the length of the brace damper.

  Hereinafter, a brace damper according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. The present embodiment relates to a brace damper for absorbing and attenuating vibration energy acting on a building during an earthquake, for example, and suppressing the shaking of the building.

  As shown in FIGS. 1 to 4, the brace damper A of the present embodiment includes a damper main body 1 that absorbs and attenuates vibration energy acting on the building, and a damper main body 1 ( And a joint 2 for laying the brace damper A).

  The damper main body 1 of the present embodiment includes a first H-section steel 3, two steel plates 4 (4a, 4b), a pair of grooved steels 5 (a pair of stiffening members 5a, 5b), and asphalt rubber. And a viscoelastic body 6 such as superplastic rubber and a second H-section steel 7.

  The first H-section steel 3 is extended along the axis O1 of the brace damper A, and the rectangular flat steel plates 4 are arranged along the axis O1 on both sides of the web 3a of the first H-section steel 3, respectively. They are stacked in parallel and at a distance from the web 3a. The pair of channel steels 5 (5a, 5b) is for preventing the buckling of the steel plates 4 (4a, 4b), and is disposed in parallel along the axis O1, and the steel plate 4 and the first H The web 3a of the section steel 3 is stacked back and back and sandwiched between the upper and lower flanges 3b and 3c of the first H-section steel 3 so as to sandwich the web 3a. Further, the viscoelastic body 6 is interposed between the steel plate 4 and the web 3a of the first H-section steel 3 and between the steel plate 4 and the channel steel 5.

  At this time, the grooved steel 5 is arranged such that one end portion 5c is arranged on the inner side in the axis O1 direction than the one end portion 3d of the first H-section steel 3, and the other end portion 5d is from the other end portion 3e of the first H-section steel 3. Is also arranged outside the axis O1 direction. The steel plate 4 has one end 4c arranged on the inner side in the axis O1 direction from the one end 5c of the grooved steel 5, and the other end 4d arranged on the outer side in the axis O1 direction from the other end 5d of the grooved steel 5. Is provided.

  Further, as shown in FIG. 3, the grooved steel 5 has an interposed member 8 interposed between the one end 5 c side and the one end 3 d side of the web 3 a of the first H-shaped steel 3, and fastens the bolt and nut. By doing so, the one end portion 5 c side is integrally connected to the one end portion 3 d side of the first H-section steel 3 via the interposed member 8. At this time, the interposition member 8 has one end 8 a disposed at the same position in the direction of the axis O <b> 1 as the one end 5 c of the channel steel 5, and a predetermined gap between the other end 8 b and the one end 4 c of the steel plate 4. H is provided. As shown in FIGS. 1 to 4, the grooved steel 5 has flange portions 5 e and 5 f integrally connected to the flanges 3 b and 3 c of the first H-shaped steel 3 with bolts and nuts.

  The second H-section steel 7 is formed in the same shape and the same size as the first H-section steel 3, and the first H-section steel 3 and the axis O <b> 1 are coaxially arranged on the other end side of the damper main body 1. It is arranged and arranged. Further, the second H-section steel 7 has a web 7a inserted between the other end 4d side of the pair of steel plates 4 (4a, 4b), and the flanges 7b, 7c are respectively connected to the flanges 3b, 3c of the first H-section steel 3. In a state of being arranged at the same height position, a predetermined gap H is provided between the one end 7d and the other end 3e of the first H-section steel 3. Thereby, the 2nd H-section steel 7 is provided in the state which stored the other end part 4d, 5d side of the steel plate 4 and the channel steel 5 between the upper and lower flanges 7b and 7c. In addition, as shown in FIG. 3, the second H-section steel 7 includes an interposition member 9 between the web 7 a and the steel plate 4, and fastens a bolt and a nut, thereby interposing the interposition member 9. The web 7a is integrally connected to the other end 4d side of the pair of steel plates 4 (4a, 4b).

  On the other hand, as shown in FIGS. 1 to 3, the joint portion 2 is an H-section steel having the same shape and size as the first H-section steel 3 and the second H-section steel 7, and the end portion 2 a side thereof is the first H-section steel. The connecting plate 10 and bolts and nuts are connected to the one end 3d side of the section steel 3 and the other end 7e side of the second H-section steel 7, and the axis O1 is coaxially arranged outside the damper main body 1 in the direction of the axis O1. It is extended in the state arranged on the top. The joint 2 is formed with a length corresponding to the interval of the frame of the building, and is a length adjusting member for adjusting the length of the brace damper A, and a joint member (for joining the frame of the building) Function as a connecting member).

  When assembling the brace damper A having the above-described configuration, the first H-section steel 3 is disposed at a predetermined position, and the viscoelastic body 6 is interposed between the upper and lower flanges 3b, 3c of the first H-section steel 3. By inserting the steel plate 4 and the channel steel 5, the steel plate 4 and the channel steel 5 can be easily positioned. Further, the second H-section steel 7 can be easily positioned by inserting the second H-section steel 7 between the other end portions 4d of the pair of steel plates 4 (4a, 4b). Then, the steel plate 4, the grooved steel 5, and the second H-shaped steel 7 are positioned, the grooved steel 5 is set to the first H-shaped steel 3, and the second H-shaped steel 7 is bolted to the other end 4d side of the steel plate 4. The assembly operation of the damper main body 1 (the brace damper A) is completed by a simple operation of connecting with a nut.

  When installing the brace damper A in the building frame, each of the plurality of damper main bodies 1 assembled as described above is carried into the floor where the brace damper A is installed. And, the damper main body part is connected to a joint part 2 (H-shaped steel, length adjusting member) having a length corresponding to the height and span of the floor where the brace damper A is installed, and finally the interval of the building frame to which the brace damper A is joined. By connecting to 1, the length of the brace damper A can be easily adjusted. Since the length of the brace damper A can be easily adjusted by connecting the joint 2 to the damper main body 1 in this way, the brace can be joined by joining the joint 2 to the frame even when the frame interval of the building is different. The damper A can be installed easily.

  Further, in the brace damper A of the present embodiment, the damper main body 1 has the steel plate 4 and the grooved steel 5 placed between the upper and lower flanges 3b, 3c, 7b, 7c of the first H-shaped steel 3 and the second H-shaped steel 7. Since the joint 2 is composed of the same H-section steel as the first H-section steel 3 and the second H-section steel 7 which are the main members of the damper main body 1, the conventional brace damper Compared with, it looks neat and looks nice. For this reason, when the brace damper A of this embodiment is installed in the frame of a building, there is no possibility of impairing aesthetics unlike the conventional brace damper.

  On the other hand, the brace damper A installed in the frame of the building in this way is subjected to vibration energy on the building due to disturbance such as an earthquake or strong wind, and when the frame to which the brace damper A is joined is relatively displaced, both sides of the damper main body 1 The joint portions 2 respectively connected to the two are relatively displaced together with the frame. Then, the first H-section steel 3 and the channel steel 5 connected to one of the joint portions 2 and the steel plate 4 connected to the other joint portion 2 are relatively displaced in the direction of the axis O1 within the gap H. The first H-section steel 3 and the groove-shaped steel 5 and the steel plate 4 are displaced relative to each other, and the viscoelastic body 6 absorbs and attenuates vibration energy while undergoing shear deformation. Thereby, the shaking of a building is suppressed.

  At this time, since the pair of channel steels 5 (5a, 5b) is provided so as to sandwich the pair of steel plates 4 (4a, 4b) from the outside, the pair of channel steels 5 (5a, 5b) Thus, buckling deformation of the steel plate 4 is prevented. Furthermore, in the brace damper A of the present embodiment, the first H-section steel 3 is disposed between the pair of steel plates 4 (4a, 4b), and each steel plate 4 is a web of the channel steel 5 and the first H-section steel 3. It is arrange | positioned so that it may be pinched | interposed between 3a. For this reason, buckling deformation of the steel plate 4 is prevented not only by the grooved steel 5 but also by the first H-shaped steel 3, and the conventional brace damper for preventing the buckling deformation of the steel plate 4 only by the grooved steel 5. As compared with the above, buckling deformation of the steel plate 4 is prevented more reliably. That is, the mechanical performance is greatly improved.

  Therefore, in the brace damper A of the present embodiment, the steel plate 4 and the grooved steel 5 are provided so as to sandwich the web 3a of the first H-shaped steel 3, so that the first H-shaped steel 3 in addition to the grooved steel 5 is provided. This also makes it possible to ensure rigidity against buckling. As a result, the mechanical performance can be reliably improved as compared with the conventional brace damper.

  Further, since the brace damper A (damper main body portion 1) is configured by storing the steel plate 4 and the grooved steel 5 between the upper and lower flanges 3b and 3c of the first H-shaped steel 3, the first H-shaped at the time of assembly. The steel plate 4 and the channel steel 5 can be positioned by a simple operation of inserting the steel plate 4 and the channel steel 5 between the flanges 3 b and 3 c of the steel 3. Furthermore, the second H-section steel 7 can be positioned by a simple operation of inserting the web 7a between the other end portions 4d of the pair of steel plates 4 (4a, 4b). Further, by using H-shaped steel (first H-shaped steel 3 and second H-shaped steel 7) as the main member, the number of members can be reduced and the appearance can be improved as compared with the conventional brace damper. it can. Furthermore, since the junction part 2 is comprised using H-section steel, compared with the conventional brace damper from this point, while being able to reduce a number of members, it can improve appearance. As a result, it is possible to easily assemble the brace damper A, and it is possible to eliminate the risk of damaging the aesthetics when installed in the building frame.

  In addition, by attaching the joint 2 (length adjusting member) without changing the length of the damper main body 1, it is possible to easily adjust the length of the brace damper A according to the interval of the building frame. Become. As a result, even if the floor height and span of the floor where the brace damper A is installed, and thus the interval between the frames of the building to which the brace damper A is joined, the length of the brace damper A is adjusted to flexibly cope with it. Thus, the brace damper A can be easily installed at a predetermined position in the frame by joining the joint 2 to the frame.

  As mentioned above, although one embodiment of the brace damper concerning the present invention was described, the present invention is not limited to the above-mentioned embodiment, and can be changed suitably in the range which does not deviate from the meaning. For example, in the present embodiment, the H-shaped steel joints 2 (length adjusting members) on both sides of the damper main body 1 (the one end 3d side of the first H-section steel 3 and the other end 7e side of the second H-section steel 7). ) To adjust the length of the brace damper A. On the other hand, the joint 2 is attached only to one side of the damper main body 1 (one end 3d side of the first H-section steel 3 or the other end 7e side of the second H-section steel 7), The brace damper A may be installed in the frame by bonding the other side to which the joint 2 is not connected to the frame of the building. Even in this case, the length of the brace damper A can be adjusted by providing the joint 2 formed according to the interval of the frame on one side, and the same effect as the present embodiment can be obtained. It is.

  Moreover, in this embodiment, although the junction part 2 (length adjustment member), the 1st H section steel 3, and the 2nd H section steel 7 shall be joined with the volt | bolt and the nut (high-strength bolt joining), The joining portion 2, the first H-section steel 3, and the second H-section steel 7 may be joined by welding.

  In relation to this, the length on the one end 3d side of the first H-section steel 3 that extends outward in the axis O1 direction from the one end 5c of the pair of channel steels 5 (the length of the first H-section steel 3). ) And / or the length of the second H-section steel 7 on the other end 7e side (the length of the second H-section steel 7) extending outward in the axis O1 direction from the other end 4d of the pair of steel plates 4 is adjusted. And you may make it adjust the length of the brace damper A (damper main-body part 1). Even if comprised in this way, it is possible to adjust the length of the brace damper A according to the space | interval of the frame of a building.

It is a front view which shows the brace damper which concerns on one Embodiment of this invention. It is the X1-X1 arrow view figure of FIG. FIG. 2 is an X2-X2 arrow view of FIG. 1. It is the X3-X3 line arrow directional view of FIG.

Explanation of symbols

1 Damper body 2 Joint (length adjusting member)
2a One end 3 First H-shaped steel 3a Web 3b Flange 3c Flange 3d One end 3e The other end 4 Steel plate 4a One steel plate 4b The other steel plate 4c One end 4d The other end 5 Channel steel (stiffening member)
5a One channel steel 5b The other channel steel 5c One end 5d The other end 5e Flange 5f Flange 6 Viscoelastic body 7 Second H-section steel 7a Web 7b Flange 7c Flange 7d One end 7e The other end 8 Member 9 Interposition member 10 Connecting plate A Brace damper H Clearance

Claims (2)

A brace damper for attenuating vibration energy acting on a building installed in a building frame,
The damper main body laminates steel plates on both sides of the first H-shaped steel web, and sandwiches the steel plate and the first H-shaped steel web with a pair of stiffening members for preventing buckling of the steel plate. The viscoelastic body is interposed between the upper and lower flanges of the first H-shaped steel and laminated between the steel plate and the first H-shaped steel web and between the steel plate and the stiffening member. Configured,
The stiffening member is provided with one end portion arranged axially inside the one end portion of the first H-section steel and the other end portion arranged axially outside the other end portion of the first H-section steel, The one end side is provided to be connected to the web of the first H-section steel,
The steel plate is provided with one end portion arranged axially inside the one end portion of the stiffening member and the other end portion arranged axially outside the other end portion of the stiffening member,
On the other end portion side of the damper main body portion, the second H-section steel inserts a web on one end portion side between the other end portions of the pair of steel plates, and the web is connected to the other end portion of the pair of steel plates. Rutotomoni provided by connecting the side, the state in which a predetermined gap between the first 2H shaped steel of the one end and the other end of the 1H-shaped steel, and the upper and lower flanges of the first 2H shaped steel The brace damper is disposed with the other end of the steel plate and the stiffening member in between . The brace damper according to claim 1, wherein
A brace damper, characterized in that a length adjusting member made of an H-shaped steel is provided connected to one end of the first H-shaped steel and / or the other end of the second H-shaped steel.

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