JP5452573B2 - Support column and vibration control device for support column - Google Patents

Description

  The present invention relates to a column, for example, a column such as a road sign or a road facility, and a column damping device.

  Struts such as road signs and road equipment vibrate due to the influence of wind and the influence of vehicle travel. For example, in a viaduct, the viaduct swings as the vehicle travels. Road signs and road laying equipment installed on the viaduct vibrate as the viaduct swings. Such vibration is small, but is applied to the column for a long time and continuously. For this reason, in the road signs and road equipment pillars, the pillars and anchor bolts may be damaged by metal fatigue (if the pillars are hollow tubes, cracks may occur). For this reason, regular maintenance is required.

  Various proposals have been made regarding vibration control devices for attenuating input vibrations caused by wind, vehicle travel, etc., for such pillars as road signs and road equipment. For example, a combination of a weight and a spring (JP-A-9-143939), a combination of a spring and an oil damper (JP-A-5-187482), a form immersed in a viscous fluid (JP-A-2006) -71095 gazette), and a form (Japanese Patent Laid-Open No. 2007-239906) attached to the outside of the column as a pendulum has been proposed. Further, there have been proposed a configuration in which a vibration absorber is sandwiched between a support column and a fixed portion (Japanese Patent Laid-Open No. 2001-73329), and a mode in which a vibration absorber is embedded in the support column (Japanese Patent Laid-Open No. 2001-207688). . In addition, a form in which a chain is hung inside a support (Patent No. 4493090, Japanese Patent Application Laid-Open No. 2006-226038), and a form in which a block in which a viscous fluid and a plate for restricting the flow are arranged are installed inside the support (Japanese Patent Application Laid-Open No. 2007-2007) No. -127210), and a form in which a pendulum is hung (Japanese Patent Laid-Open No. 2007-170415, Japanese Patent No. 3222863) has been proposed.

Japanese Patent Laid-Open No. 9-143939 Japanese Patent Laid-Open No. 5-187482 JP 2006-71095 A JP 2007-239906 A JP 2001-73329 A JP 2001-207688 A Japanese Patent No. 4493090 JP 2006-226038 A JP 2007-127210 A JP 2007-170415 A Japanese Patent No. 3222863

In the form in which the weight is attached to the upper part of the support column, when the weight is attached to an existing road sign or road equipment, the weight becomes large via a crane. In some cases, it is necessary to restrict road traffic on a large scale. Moreover, since the weight is arranged on the upper part, the appearance is deteriorated, and the weight is distributed on the upper part of the support column, so that a large shaking may occur in the event of an earthquake. In addition, the spring alone is inferior in vibration absorption compared to the combination of oil dampers. A combination of a spring and a damper can basically absorb vibration of a component parallel to the stroke direction, but cannot absorb vibration of a component orthogonal to the spring or damper. In addition, in the case of using a vibration absorber, a compressive force or a tensile load acts on the vibration absorber. In the case where rubber is used for the vibration absorber, the allowable amplitude is limited because the rubber has low resistance to compression. In addition, oil and viscous materials are highly temperature dependent, and performance may become unstable due to the influence of changes in temperature.
Therefore, as described above, a column having a damping device that can suppress vibration and quickly attenuate the column to which a road sign or road equipment is attached is proposed.

  The strut according to an embodiment of the present invention has a base end fixed to the installation portion at a different position in the circumferential direction of the column main body and the column main body standing on the installation portion, along the outer peripheral surface of the column main body. A plurality of extended brackets, and a molded body of high damping rubber disposed between each bracket and the outer peripheral surface of the column main body and attached to each bracket and the outer peripheral surface of the column main body.

  According to such a support, vibration generated in the support body can be suppressed to a small level and can be attenuated early. Moreover, since the vibration generated in the column main body can be suppressed to a small value, the column life can be extended.

  In this case, the bracket may include a flat plate-like portion extending so as to be substantially parallel to one tangent line of the virtual circle around the central axis of the column main body. Moreover, the bracket may be provided with an arc-shaped plate-like portion along the outer peripheral surface of the column main body.

  Here, three or more brackets may be equally arranged in the circumferential direction of the column main body. Further, the plurality of brackets may be equally arranged in a region in a range of 180 degrees when viewed from the central axis of the column main body. Moreover, the bracket may be attached to the installation part with a spacer interposed. The bracket includes a base end portion fixed to the installation portion and a plate-like portion extending along the outer peripheral surface of the column main body, and the base end portion and the plate-like portion are connected by a hinge, The plate-like portion may swing according to the vibration of the column main body.

  Moreover, when the foundation embedded in the to-be-installed part and the anchor bolt provided in the foundation are provided, the some bracket may be attached to the anchor bolt. Moreover, when the column main body is attached to an anchor bolt provided on the foundation, the column main body and the plurality of brackets may be attached to the same anchor bolt.

  Further, the high damping rubber may have a loss coefficient tan δ of 0.3 to 1.0 at a shear strain of 3% to 20%. Further, the high damping rubber is composed of one or more rubbers selected from natural rubber, polyisoprene rubber, polybutadiene rubber and butadiene styrene rubber, and the loss coefficient tan δ is 0.5 or more. Good.

  The high damping rubber may be coated with rubber having excellent weather resistance. Furthermore, the high-damping rubber may be coated with a rubber that is excellent in air barrier properties in addition to weather resistance. Moreover, the support | pillar may be provided with the cover which covers at least the upper part of the molded object of high attenuation | damping rubber | gum.

  Further, the vibration damping device for a column attached to the column main body includes a plurality of brackets whose base ends are fixed to the installation portion and extend along the outer peripheral surface of the column main body with respect to different positions in the circumferential direction of the column main body. The molded body of high damping rubber may be provided between each bracket and the outer peripheral surface of the column main body and attached to each bracket and the outer peripheral surface of the column main body.

  In this case, the bracket may include a flat plate-like portion extending so as to be substantially parallel to one tangent line of the virtual circle around the central axis of the column main body. Moreover, the bracket may be provided with an arc-shaped plate-like portion along the outer peripheral surface of the column main body. The bracket may include a base end portion fixed to the installation portion, a plate-like portion extending along the outer peripheral surface of the column main body, and a hinge connecting the base end portion and the plate-like portion. Good.

FIG. 1 is a view showing a support according to an embodiment of the present invention. FIG. 2 is a diagram showing the installation structure of the column main body. FIG. 3 is a view showing the installation structure of the column main body. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1 and shows the arrangement of the brackets. FIG. 5 is a view showing a support vibration damping device. FIG. 6 is a view showing a single bracket and a molded body of high damping rubber. FIG. 7 is a view showing deformation of a molded body of high-damping rubber with respect to vibration of the column main body. FIG. 8 is a view showing the deformation of the molded body of high-damping rubber with respect to the torsion of the column main body. FIG. 9 is a diagram illustrating an example of arrangement of brackets with respect to the column main body. FIG. 10 is a diagram illustrating an arrangement example of the brackets with respect to the column main body. FIG. 11 is a diagram illustrating an arrangement example of brackets with respect to the column main body. FIG. 12 is a diagram illustrating an example of arrangement of brackets with respect to the column main body. FIG. 13 is a diagram illustrating an arrangement example of brackets with respect to the column main body. FIG. 14 is a view showing a modified example of a bracket and a molded body of high-damping rubber with respect to the column main body. FIG. 15 is a view showing a modified example of a molded body of a bracket and a high-damping rubber with respect to the column main body. FIG. 16 is a view showing a modified example of the molded body of the bracket and the high damping rubber with respect to the column main body. FIG. 17 is a view showing a modification of the support vibration damping device.

  Hereinafter, a support according to an embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment. Moreover, the same code | symbol is attached | subjected suitably to the member or site | part which has the same effect | action.

≪Strut 100≫
FIG. 1 is a view showing a support according to an embodiment of the present invention. As shown in FIG. 1, the support column 100 includes a support column main body 102 and a support vibration damping device 200. The strut damping device 200 includes a bracket 202 and a molded body 204 of high damping rubber. Here, the support column 100 will be described first, and then the support vibration damping device 200 will be described.

≪Main body 102≫
The column main body 102 is erected on the installation portion 300. Here, the installation target 300 is a part (place) where the support column 100 is installed, such as the ground or a road shoulder.

  FIG. 2 shows an attachment structure for attaching the column main body 102 to the installation portion 300. FIG. 3 is a cross-sectional view showing a base end portion 102a of the column main body 102 and showing a III-III cross section in FIG. In addition, in FIG. 1, since the strut damping device 200 is depicted, the structure for attaching the strut body 102 to the installation portion 300 is depicted more simply than in FIG.

  In this embodiment, the installation target 300 includes a pile foundation 302 and a concrete foundation 304 as a foundation. The pile foundation 302 is composed of a steel pipe and is deeply embedded in the installation part 300. The concrete foundation 304 is attached to the upper end of the pile foundation 302 as shown in FIG. A mounting portion 304 a for attaching the base end portion 102 a of the column main body 102 is provided on the top of the concrete foundation 304. Here, the attachment portion 304 a slightly rises from the installation portion 300 according to the base end portion 102 a of the column main body 102. As shown in FIG. 3, eight anchor bolts 306 a to 306 h are attached to the attachment portion 304 a of the concrete foundation 304. The base end portion 102a of the column main body 102 is attached to the anchor bolts 306a to 306h. For the anchor bolts 306, in order to make the distinction particularly clear, suffixes a to h are added to the reference symbols. If there is no particular need for distinction, “anchor bolt 306” is used without adding a suffix.

  Note that FIG. 2 illustrates the case where the support column 100 is installed on the ground, and the installation target part 300 is provided on the ground. In the case where the support column 100 is installed on the viaduct, it is preferable to provide an installation part 300 for installing the support column 100 on the viaduct. In this case, it is good to provide the to-be-installed part 300 in which the anchor bolts 306a-306h as mentioned above were provided in the viaduct in the position which installs the support | pillar 100 in a viaduct.

≪Base end 102a of the column main body 102≫
In this embodiment, as shown in FIG. 3, the column main body 102 is formed of a hollow steel pipe. A flat plate 121 is attached to the base end portion 102 a of the column main body 102. In this embodiment, the flat plate 121 is welded to the base end portion 102a. Eight ribs 122 are provided on the outer periphery of the base end portion 102 a of the column main body 102. The ribs 122 are suffixed with a to h when the distinction is particularly clear. If there is no particular need for distinction, “rib 122” is used without adding a suffix. The ribs 122a to 122h are welded to the base end portion 102a of the column main body 102 and the flat plate 121, respectively, and reinforce the joint portion between the base end portion 102a of the column main body 102 and the flat plate 121.

  Holes into which the anchor bolts 306a to 306h are inserted are formed in the flat plate 121 of the base end portion 102a of the column main body 102. The base end 102a of the column main body 102 is fixed to the anchor bolts 306a to 306h by nuts (not shown) by inserting the flat plate 121 into the anchor bolts 306a to 306h.

  In the example shown in FIG. 1, the column 100 is a column for road signs, and a road sign 105 is attached to the upper part. As shown in FIG. 2, the sign attaching portion to which the road sign 105 is attached is configured by a frame body 111 extending in one direction orthogonal to the pillar main body 102 at the upper part of the pillar main body 102. In this embodiment, the frame body 111 includes two main shafts 112 and 113 extending in parallel at a predetermined interval in one direction orthogonal to the column main body 102, and an installation shaft 114 spanned between the main shafts 112 and 113, 115. In this embodiment, the main shafts 112 and 113 and the installation shafts 114 and 115 are welded in a state of being assembled in a rectangular frame along the back surface of the rectangular road sign 105. In the frame body 111, the base ends of the main shafts 112 and 113 are attached to the upper portion of the support column 100.

  The column 100 has two axes extending in parallel along one direction orthogonal to the column main body 102 at the top. For this reason, it is also called an F-type label. Although illustration is omitted, an axis may extend along one direction orthogonal to the column main body 102, and a road sign 105 may be placed on the axis. In this case, it is also referred to as an L-type label. The F type mark and the L type mark are also referred to as cantilever type signs.

  The column main body 102 of the F-type label is installed on the installation target portion 300 in a cantilever state. Further, in the F-type sign, the weight of the frame body 111 and the road sign 105 is applied to two shafts along one direction orthogonal to the support main body 102 in the upper part of the support main body 102. For this reason, as shown in FIG. 1, a moment of force N acts on the column main body 102 on the side where the road sign 105 is placed. When wind is blown on the road sign 105, an external force F acts in the normal direction of the road sign 105. Due to the external force, the column main body 102 may be twisted.

  Thus, the moment N acts on the column main body 102 due to the weight of the frame body 111 and the road sign 105. Further, the column main body 102 is twisted by the influence of the wind. Further, in applications where the vehicle is installed close to a road like a road sign, traffic vibrations are applied, and complex vibrations can continue to act on the column main body 102. Furthermore, when attached to the viaduct, the amplitude of the viaduct is increased because of the shaking of the viaduct. The column main body 102 is in a cantilever state, and in particular, the base end portion 102a is easily damaged. In this embodiment, a strut damping device 200 is attached to suppress vibration generated in the strut body 102 to be small. Hereinafter, the support vibration damping device 200 will be described.

≪Strut damping device 200≫
FIG. 4 is a plan view showing the strut damping device 200 attached to the strut body 102 for the strut 100 (see FIG. 1) (as viewed from the arrow IV-IV in FIG. 1). As shown in FIGS. 1 and 4, the strut damping device 200 is attached to a strut body 102 and includes a bracket 202 and a molded body 204 of high damping rubber. In this embodiment, a plurality of brackets 202 and high-attenuation rubber molded bodies 204 are used in the vibration damping device 200 for struts.

<< Bracket 202 >>
FIG. 5 shows a bracket 202 and a molded body 204 of high damping rubber. As shown in FIG. 5, here, a plurality of brackets 202 are prepared and arranged at different positions in the circumferential direction of the column main body 102. Each bracket 202 has a base end fixed to the installation portion 300 and extends along the outer peripheral surface of the column main body 102.

  In this embodiment, as shown in FIG. 4, the bracket 202 is attached at different positions in the circumferential direction of the column main body 102. In the form shown in FIG. 4, the brackets 202 are equally arranged at eight locations around the column main body 102.

  Each bracket 202 is a metal member, and includes a plate-like portion 222 extending along the outer peripheral surface of the column main body 102 and a base end portion 224 fixed to the installation portion 300 (see FIG. 5). . In this embodiment, as shown in FIG. 1, the plate-like portion 222 and the base end portion 224 are substantially L-shaped, and are joined by welding, for example. The base end part 224 can be fixed to the installation target part 300 with a bolt 226.

≪Installed part 300≫
Moreover, in this embodiment, the to-be-installed part 300 is provided with the foundation 304 (concrete foundation 304) embedded in the to-be-installed part 300, and the anchor bolts 306a-306h provided in the foundation 304. In this case, the plurality of brackets 202 may be fixed to the installation portion 300 by being attached to the anchor bolts 306a to 306h. Further, when the column main body 102 is attached to the anchor bolts 306a to 306h provided on the foundation 304, the column main body 102 and the plurality of brackets 202 may be attached to the same anchor bolt 306a to 306h. . Thereby, the strut damping device 200 can be installed using the existing anchor bolts 306a to 306h.

  In this embodiment, the plate-like portion 222 has a flat plate shape and extends from the base end portion 224 so as to be substantially parallel to one tangent line of the virtual circle around the central axis O of the column main body 102. In this embodiment, the column main body 102 has a cylindrical shape, and the plate-like portion 222 of the bracket 202 extends so as to be substantially parallel to one tangent to the outer peripheral surface of the column main body 102.

≪High damping rubber molded body 204 ≫
The molded body 204 of high damping rubber is disposed between each bracket 202 and the outer peripheral surface of the column main body 102, and is attached to each bracket 202 and the outer peripheral surface of the column main body 102. In this embodiment, as shown in FIGS. 4 and 5, the molded body 204 of the high damping rubber is disposed between the plate-like portion 222 of the bracket 202 and the outer peripheral surface of the column main body 102. Bonded to the portion 222 and the outer peripheral surface of the column main body 102. In this embodiment, as shown in FIG. 6, one high-damping rubber molded body 204 has a central angle θ of about 30 degrees with respect to the outer peripheral surface of the column main body 102 when viewed from the central axis O of the column main body 102. It covers a certain area.

  In this case, for example, a sheet-like unvulcanized high damping rubber having a predetermined thickness, width and length is prepared. One side of the unvulcanized high damping rubber is placed along the outer peripheral surface of the column main body 102, and the plate-like portion 222 of the bracket 202 is pressed against the opposite surface of the high damping rubber. In this way, the unvulcanized high damping rubber is sandwiched between the outer peripheral surface of the column main body 102 and the plate-like portion 222 of the bracket 202. At this time, a rubber vulcanized adhesive (for example, LORD Far East, Inc .: rubber vulcanized adhesive (trade name “trade name”) is formed on the outer peripheral surface of the column main body 102 and the plate-like portion 222 of the bracket 202. Apply Chemlock ”)).

≪Adhesion of molded body 204 of high damping rubber≫
Next, the bracket 202 and the unvulcanized high damping rubber are heated from above the bracket 202. For example, a silicone surface heater (for example, a silicone rubber heater (RSDL type) manufactured by Nippon Heater Co., Ltd.) may be used as the heating device. In this case, it is preferable to heat by heating a silicone surface heater from above the bracket 202. Thereby, heat is transmitted to the unvulcanized high-damping rubber through the metal bracket 202. The high damping rubber can be heated and vulcanized in a state where the outer peripheral surface of the column main body 102 and the plate-like portion 222 of the bracket 202 are pressed against the high damping rubber. Thereby, high damping rubber can be bonded to the outer peripheral surface of the column main body 102 and the plate-like portion 222 of the bracket 202.

  In this case, as shown in FIG. 4, a plurality of high-attenuation rubber molded bodies 204 arranged around the column main body 102 can be bonded at a time. That is, as described above, a rubber vulcanized adhesive is applied to the outer peripheral surface of the column main body 102 and the plate-like portion 222 of the bracket 202, and a plurality of unvulcanized high-damping rubbers are disposed at predetermined positions around the column main body 102. And the bracket 202 are arranged. Then, it is preferable to heat by heating a silicone-made surface heater from above the plurality of brackets 202 arranged around the column main body 102.

  In this case, the high-damping rubber molded body 204 and the bracket 202 are attached to the column main body 102, and then the bracket 202 is attached to the installation portion 300. At this time, the bracket 202 may be attached to the installation portion 300 while adjusting the position of the bracket 202 with appropriate spacers 241 and 242 (see FIG. 5) interposed therebetween. Thereby, it can prevent that a big deformation | transformation enters into a high attenuation | damping rubber | gum in an initial state. Further, the base end portion 224 of the bracket 202 may be attached to the installation portion 300 by using an anchor bolt 306 provided in the installation portion 300, for example. As a result, the bracket 202 of the strut damping device 200 and the molded body 204 of high damping rubber can be attached to the existing strut body 102.

≪Physical properties of molded body 204 of high damping rubber≫
Here, the rubber used for the molded body 204 of the high damping rubber may have a loss coefficient tan δ of about 0.3 to 1.0 when the shear strain is 3% to 20%, for example. As a result, for strut damping, the strut body 102 is vibrated and twisted to exert an appropriate resistance against the input shear deformation, and the vibration and twist acting on the strut body 102 are suppressed to a small extent, and at an early stage. Can be attenuated.

  In this case, preferably, the molded body 204 of the high damping rubber is composed of a blend of one or two or more rubbers selected from, for example, natural rubber, polyisoprene rubber, polybutadiene rubber, and butadiene styrene rubber. The loss coefficient tan δ is preferably 0.5 or more.

≪Coating rubber 270≫
As shown in FIG. 6, the molded body 204 of high damping rubber may be coated with a coating rubber 270 having excellent weather resistance. Further, the covering rubber 270 may be a rubber that is excellent in air barrier properties in addition to weather resistance. For example, ethylene-propylene rubber or chloroprene rubber can be used as the rubber excellent in weather resistance and air barrier properties. As the rubber having excellent air barrier properties, chlorobutyl rubber or bromobutyl rubber obtained by halogenating butyl rubber that allows only 5% of natural rubber to pass through air can be used. Further, the coating rubber 270 may be coated twice with the outermost side being a weather-resistant rubber and the inner side being a rubber having excellent air barrier properties. Thereby, higher weather resistance is obtained. Such a covering rubber 270 usually does not have a high damping property. For this reason, the thickness of the covering rubber 270 is preferably about 5 mm or less, for example. In consideration of durability, for example, it is preferably about 1 mm or more. Preferably, the thickness is about 2 mm to 3 mm.

≪Deformation of molded body 204 of high damping rubber≫
As described above, in this embodiment, the column 100 is a column for a road sign as shown in FIG. 1, and a road sign is attached to the upper part. For this reason, when the wind is strong or the traffic volume is large, the column main body 102 swings with a minute amplitude particularly under the influence of the wind and traffic vibration. In this embodiment, as shown in FIG. 7, relative shear displacement occurs between the outer peripheral surface of the column main body 102 and the plate-like portion 222 of the bracket 202 with respect to vibration acting on the column main body 102. In response to such shear displacement, shear deformation occurs in the molded body 204 of high damping rubber. In this case, as viewed from the central axis O of the column main body 102, the molded body 204 of the high damping rubber arranged at a position orthogonal to the vibration direction (amplitude direction) of the column main body 102 causes more remarkable shear deformation.

  Further, in this embodiment, the plate-like portion 222 of the bracket 202 has a flat plate shape. The plate-like portion 222 of the bracket 202 is substantially parallel to one tangent line of the virtual circle around the central axis O of the column main body 102. Therefore, at a position orthogonal to the vibration direction (amplitude direction) when viewed from the central axis O of the column main body 102, the plate-like portion 222 of the bracket 202 arranged parallel to the tangent to the column main body 102 is It does not interfere with the column main body 102. For this reason, a shear displacement corresponding to the amplitude of the column main body 102 is appropriately input to the molded body 204 of high damping rubber between the bracket 202 and the column main body 102.

  In addition, as described above, in the F-type label and the L-type sign, for example, when the wind is strong, the column main body 102 may be twisted due to the wind blown on the sign. According to the strut damping device 200 described above, shear deformation occurs in the molded body 204 of high damping rubber as shown in FIG. In this embodiment, as shown in FIG. 4, a molded body 204 of high damping rubber is disposed around the column main body 102. Therefore, shear deformation similar to that of the high attenuation rubber molded body 204 shown in FIG. 8 occurs in the high attenuation rubber molded body 204 arranged around the column main body 102.

  This support column 100 exhibits appropriate resistance by the shearing deformation of the molded body 204 of high damping rubber against the vibration and torsion of the support column main body 102, and quickly attenuates the vibration and torsion of the support column main body 102. be able to. Further, the vibration control device 200 for a column functions even when a large vibration such as an earthquake occurs, and the vibration generated in the column main body 102 can be suppressed.

  In this embodiment, a plurality of high-damping rubber molded bodies 204 are evenly arranged around the column main body 102. For this reason, it can attenuate even if the support | pillar main body 102 vibrates in any direction. Further, the high-damping rubber is less temperature-dependent than oil and viscous material, and is less susceptible to temperature than oil or viscous material. For this reason, the molded body 204 of such high damping rubber can exhibit high damping performance in a wider temperature environment.

  In the above, the support | pillar 100 which concerns on one Embodiment of this invention, and the damping device 200 for support | pillars provided in the said support | pillar 100 were demonstrated. The present invention is not limited to the embodiment described above.

  For example, in the embodiment described above, as shown in FIG. 4, eight brackets 202 and high-damping rubber molded bodies 204 of the strut damping device 200 are equally arranged around the strut body 102. The strut damping device 200 only needs to be able to suppress vibrations and torsion acting on the strut body 102 to be small and to attenuate them early. Therefore, the number and arrangement of the brackets 202 and the molded body 204 of high damping rubber are not limited to the above-described embodiment.

≪Arrangement of bracket 202 (molded body 204 of high damping rubber) ≫
For example, when three brackets 202 (and a molded body 204 of high damping rubber) are attached around the column main body 102, the three brackets 202 are viewed from the central axis O of the column main body 102 as shown in FIG. May be arranged equally (positions separated by 120 degrees). In this case, it is possible to cause shear displacement in the molded body 204 of the high damping rubber in three directions parallel to the plate-like portion 222 of each bracket 202 with respect to the central axis O of the column main body 102. Vibration generated in the main body 102 can be suppressed to a low level and can be attenuated at an early stage. As described above, when a plurality (three or more in this case) of the bracket 202 (and the high damping rubber molded body 204) are attached around the support main body 102, they may be evenly arranged around the support main body 102. .

  As described above, when a plurality of brackets 202 (and the molded body 204 of high damping rubber) are attached around the column main body 102, they may be evenly arranged around the column main body 102. When a plurality of brackets 202 (and a molded body 204 of high-damping rubber) are attached around the column main body 102, they are not necessarily arranged evenly around the column main body 102.

  For example, when two brackets 202 (and a molded body 204 of high-damping rubber) are attached around the column main body 102, the two brackets 202 are viewed from the central axis O of the column main body 102 as shown in FIG. It may be arranged at a position 90 degrees apart. In this case, the two brackets arranged at positions 90 degrees apart cause shear deformation in the molded body 204 of high damping rubber attached to at least one of the brackets 202 with respect to the vibration direction of the column main body 102. be able to.

  On the other hand, when two brackets 202 (and a molded body 204 of high damping rubber) are attached around the column main body 102, for example, in FIG. 11, 180 degrees apart from the central axis O of the column main body 102. The bracket 202 is arranged at the position. In this case, the direction in which the high-damping rubber molded body 204 attached to the two brackets 202 can undergo shear deformation is the same direction. That is, when the column main body 102 vibrates in the direction a perpendicular to the direction in which the two brackets 202 are arranged when viewed from the central axis O of the column main body 102, the shear deformation corresponding to the vibration causes high damping rubber. This occurs in the molded body 204. However, when the column main body 102 vibrates in the same direction b (the direction perpendicular to the plate-like portion 222 of the bracket 202) as the direction in which the two brackets 202 are arranged when viewed from the central axis O of the column main body 102. The shear deformation corresponding to the vibration does not occur in the molded body 204 of high damping rubber.

  For this reason, except when the vibration direction of the column main body 102 is previously restricted to one direction, when two brackets 202 (and the molded body 204 of high damping rubber) are attached around the column main body 102, the 2 The two brackets 202 may be arranged at positions 90 degrees apart from the central axis O of the column main body 102. As described above, when a plurality of brackets 202 (and a molded body 204 of high-damping rubber) are attached around the column main body 102, the plurality of brackets 202 are provided in an area in a range of 180 degrees when viewed from the central axis of the column main body 102. Should be arranged evenly.

  For example, as shown in FIG. 10, when two brackets are provided in the strut damping device 200, the two brackets are equally arranged (90 in a region of 180 degrees when viewed from the central axis O of the strut body 102. It is recommended to place them apart. Further, for example, when three brackets 202 are attached around the column main body 102, as shown in FIG. 12, three brackets are equally arranged in an area of 180 degrees when viewed from the central axis O of the column main body 102 ( One at 60 degrees). Further, for example, when four brackets 202 are attached around the column main body 102, for example, as shown in FIG. 13, four brackets are provided in an area of 180 degrees when viewed from the central axis O of the column main body 102. You may arrange equally (it arranges one every 45 degrees).

  As described above, the plurality of brackets 202 and the molded body 204 of high damping rubber may be evenly arranged in an area of 180 degrees when viewed from the central axis O of the column main body 102. As a result, shear deformation occurs in the molded body 204 of the high damping rubber attached to the bracket 202 located in the direction orthogonal to the vibration direction when viewed from the central axis O of the column main body 102. Due to the shear deformation generated in the molded body 204 of high damping rubber, the vibration of the column main body 102 can be suppressed to be small, and the vibration of the column main body 102 can be attenuated at an early stage.

  In addition, when the vibration direction of the column main body 102 is previously restricted to one direction, as shown in FIG. 11, if two brackets 202 are arranged in a direction orthogonal to the vibration direction of the column main body 102, The two brackets 202 may be arranged at positions 180 degrees apart from the central axis O of the column main body 102.

≪Area where molded body 204 of high damping rubber covers the outer peripheral surface of support body 102 >>
Further, as shown in FIG. 6, one high-damping rubber molded body 204 is an area having a central angle θ of about 30 degrees when viewed from the central axis O of the column main body 102 with respect to the outer peripheral surface of the column main body 102. Covering. For example, as shown in FIG. 14, if the area where the molded body 204 of the high damping rubber covers the outer peripheral surface of the column main body 102 becomes too large, the molded body 204 of the high attenuation rubber is in a state of holding the column main body 102 too much, When receiving the vibration of the column main body 102, the molded body 204 of high damping rubber interferes, and it is difficult for the high damping rubber molded body 204 to be appropriately sheared. For this reason, it is preferable that the region where the molded body 204 of the high damping rubber covers the outer peripheral surface of the column main body 102 is a region whose central angle θ is about 45 degrees or less when viewed from the central axis O of the column main body 102. For example, as shown in FIG. 15, the region in which the molded body 204 of high damping rubber covers the outer peripheral surface of the column main body 102 may be a region having a central angle θ of 40 degrees or less when viewed from the central axis O of the column main body 102. .

  The region in which the molded body 204 of the high damping rubber covers the outer peripheral surface of the column main body 102 is, for example, a region where the central angle θ is about 15 degrees or more, more preferably 20 degrees or more when viewed from the central axis O of the column main body 102. Good. Note that the lower limit value of the angle viewed from the central axis O of the column main body 102 in the region where the molded body 204 of the high damping rubber covers the outer peripheral surface of the column main body 102 can vary depending on the outer diameter of the column main body 102.

  That is, in the case where the column main body 102 is a cylinder, if the outer diameter of the column main body 102 is sufficiently large, the region where the molded body 204 of the high damping rubber covers the outer peripheral surface of the column main body 102 is separated from the central axis O of the column main body 102. The viewing angle may be small. If the angle of the high damping rubber molded body 204 covering the outer peripheral surface of the column main body 102 is too small as viewed from the central axis O of the column main body 102, the deformation input to the high damping rubber molded body 204 is deformed. Can be pulled or compressed.

  Further, if the outer diameter of the column main body 102 is small, the angle of the high damping rubber molded body 204 covering the outer peripheral surface of the column main body 102 from the central axis O of the column main body 102 may be increased. In this way, the region where the molded body 204 of the high damping rubber covers the outer peripheral surface of the column main body 102 (as viewed from the central axis O of the column main body 102, so that shear deformation appropriately occurs in the molded body 204 of the high damping rubber, The angle at which the molded body 204 of high damping rubber covers the outer peripheral surface of the column main body 102 may be determined.

  Further, the bracket 202 of the strut damping device 200 includes a flat plate-like portion 222 that extends so as to be substantially parallel to one tangent of a virtual circle around the central axis O of the strut body 102. (See, for example, FIG. 6). The plate-like portion 222 of the bracket 202 of the strut damping device 200 is not limited to such a form, and may be, for example, an arc shape along the outer peripheral surface of the strut body 102 as shown in FIG.

  In this case, as shown in FIG. 16, the plate-like portion 222 of the bracket 202 of the strut damping device 200 has an arc shape along the outer peripheral surface of the strut body 102. For this reason, for example, when the molded body 204 of high damping rubber is vulcanized and bonded, a gap is generated between the molded body 204 of high damping rubber and the outer peripheral surface of the column main body 102 and the plate-like portion 222 of the bracket 202. hard. As a result, the adhesion between the molded body 204 of high damping rubber and the outer peripheral surface of the column main body 102 and the plate-like portion 222 of the bracket 202 is strengthened.

<< Structure of bracket 202 >>
Further, as shown in FIG. 17, the bracket 202 has a structure in which a plate-like portion 222 extending along the outer peripheral surface of the column main body 102 is freely bent with respect to a base end portion 224 fixed to the installation portion 300. Good. For example, in the example shown in FIG. 17, the bracket 202 is connected to the base end portion 224 and the plate-like portion 222 by a hinge 228. The plate-like portion 222 is attached so as to swing according to the vibration of the column main body 102. In this case, as shown in FIG. 17, the plate-like portion 222 of the bracket 202 arranged in the vibration direction c of the column main body 102 swings according to the vibration of the column main body 102. Therefore, the bracket 202 does not interfere with the vibration of the column main body 102 and is attached to a bracket (not shown) positioned in a direction substantially orthogonal to the vibration direction c of the column main body 102 when viewed from the central axis O of the column main body 102. The shear deformation is appropriately input by the molded body of the high damping rubber.

  Furthermore, in this embodiment, the plate-like portion 222 of the bracket 202 swings according to the vibration of the column main body 102 while maintaining a state substantially parallel to the outer peripheral surface of the column main body 102. For this reason, it is possible to prevent the compressive stress and the tensile stress from acting on the molded body 204 of the high damping rubber accompanying the vibration of the column main body 102. Further, since the plate-like portion 222 swings in response to the vibration of the column main body 102, the high-damping rubber molded body 204 attached to the bracket 202 may be subjected to shear deformation although being minute. Thus, the high damping rubber molded body 204 attached to the bracket 202 located in the vibration direction c of the column main body 102 can be subjected to shear deformation. And the energy of the vibration which acts on the support | pillar main body 102 can also be absorbed also in the molded object 204 of the high damping rubber accompanying the said shear deformation.

≪Cover 208≫
Further, in the form shown in FIG. 17, a cover 208 is attached to the strut damping device 200. In the form shown in FIG. 17, the cover 208 may cover at least the upper part of the molded body 204 of high damping rubber. In this embodiment, the cover 208 is attached to the column main body 102 and the bracket 202 so as to cover the upper part of the plate-like portion 222 of the bracket 202 and the outer peripheral surface of the column main body 102. This protects the molded body 204 of high damping rubber attached to the bracket 202. The cover 208 may be configured to cover the entire support vibration damping device 200. The support damping device 200 swings in spite of a minute amount in response to the vibration of the support main body 102. Therefore, the cover 208 may be made of a rubber material having weather resistance. Further, by providing such a cover 208, it is possible to suppress oxidative deterioration, ultraviolet ray and ozone destruction of the molded body 204 of high attenuation rubber, and to improve the durability of the vibration damping device 200 for the column. In addition, by providing a cover so as to completely cover the strut damping device 200, insects and small animals can be prevented from entering the cover, and the molded body 204 of high damping rubber can be protected. Further, since the cover 208 can conceal the strut damping device 200 from the appearance, the aesthetic sense of the strut 100 can be maintained.

≪Testing and evaluation≫
The present inventor conducted a test for verifying the effect of the above-described strut damping device 200. The test will be described below.

  Further, the present inventor conducted the test by attaching the above-mentioned strut damping device 200 using an F-type mark (cantilever-type mark) as shown in FIG. Here, samples 1 to 5 were prepared in which the size, composition and physical properties of the molded body 204 of high damping rubber were changed. In addition, FIG.1, FIG.4 and FIG.5 shall be referred suitably, and the same referential mark is attached | subjected to the member or site | part which has the same effect | action.

≪F type sign (cantilever type sign) ≫
Here, the F type mark (cantilever type mark) prepared as a test object has an outer diameter of the column main body 102 at the base end 224 to which the column vibration damping device 200 is attached is approximately 320 mm, and the column main body 102 has a high height. A cantilever type sign having a length of about 6500 mm and a lateral length of the frame 111 attached to the column main body 102 of about 3500 mm was used. In addition, a sign 105 of about 120 kg was attached to the frame 111 as a sign. Here, the weight of the sign itself is approximately 120 kg, and when the sign 105, the frame body 111, and the column main body 102 are combined, the weight is approximately 316 kg.

≪Sample 1≫
As shown in FIG. 4, the bracket 202 and the high-damping rubber molded body 204 were equally installed at eight positions of 45 degrees when viewed from the central axis O of the column main body 102. Here, as described above, as the molded body 204 of high damping rubber, unvulcanized high damping rubber was prepared, attached to the column main body 102, and the bracket 202 was pressed against. Then, a silicone surface heater was wrapped around the entire surface of the metal bracket and fixed, followed by heat vulcanization. At this time, the heating condition was heating at 160 ° C. for 30 minutes.

  Here, each high-damping rubber molded body 204 has a height h of 800 mm (see FIG. 5) and a width W of 84 mm (corresponding to a width covering a central angle of about 30 degrees when viewed from the central axis O of the column main body 102). The thickness t is set to 20 mm (see FIG. 5). Further, natural rubber is adopted as the base rubber as the high damping rubber used in the molded body 204 of the high damping rubber, and the high damping molded body (high damping rubber 1) having a loss coefficient tan δ = 0.35 at a shear strain of 3% to 20%. Was used. Further, after molding the molded body 204 of high-damping rubber in this way, the bracket 202 was fixed to the installation part 300 using the anchor bolts 306a to 306h (see FIGS. 2 and 3) of the column main body 102.

≪Sample 2≫
In the sample 2, the height h of the molded body 204 of high damping rubber 204 is 800 mm and the width w is 112 mm (corresponding to a width that covers about 30 degrees when viewed from the central axis O of the column main body 102 (not shown). )) And a thickness of 20 mm. In addition, the bracket 202 and the molded body 204 of the high damping rubber were equally arranged at six locations around the support main body 102 by 60 degrees. Further, the same high-damping rubber 1 as the sample 1 was used for the molded body 204 of the high-damping rubber. The remainder was generally the same as that of Sample 1.

≪Sample 3≫
Sample 3 corresponds to a height h of a molded body 204 of high damping rubber: 800 mm (see FIG. 5) and a width w: 134 mm (a width that covers a central angle of about 48 degrees when viewed from the central axis O of the column main body 102). The thickness t is 20 mm (see FIG. 5). In addition, the bracket 202 and the molded body 204 of the high damping rubber were equally arranged at five positions around the column main body 102 by 72 degrees. Further, the same high-damping rubber 1 as the sample 1 was used for the molded body 204 of the high-damping rubber. The remainder was generally the same as that of Sample 1.

≪Sample 4≫
Sample 4 employs EPDM (ethylene-propylene-diene rubber) as the base rubber for the high damping rubber molded body 204 of sample 1 as the high damping rubber used in the high damping rubber molded body 204, and has a shear strain of 3% to 20%. %, A high attenuation molded body (high attenuation rubber 2) having a loss coefficient tan δ = 0.25 was used. The remainder was generally the same as that of Sample 1.

≪Sample 5≫
The sample 5 is in a state where the above-described support vibration damping device 200 is not attached.

  Hereinafter, as the high damping rubber of the molded body 204 of the high damping rubber, the high damping rubber 1 using the natural rubber used in Samples 1 to 3 as the base rubber and the high damping rubber using the EPDM used in Sample 4 as the base rubber. A blending example of rubber 2 is shown in Table 1. Here, in addition to the base rubber, silica powder, process oil, vulcanized material (sulfur), and vulcanization accelerator were used as additives. When silica is blended with rubber, process oil is necessary, and the process oil is preferably used in about 1/3 by weight ratio of silica. In Table 1, the addition amount of each additive indicates the addition amount with respect to 100 parts by weight of natural rubber or EPDM as a base rubber.

  Here, Esplen 301A manufactured by Sumitomo Chemical Co., Ltd. was used for EPDM. As the silica powder, Aerosil R972 manufactured by Nippon Aerosil Co., Ltd. was used. Moreover, Diana process oil NS of Idemitsu Kosan Co., Ltd. was used for the process oil. As the vulcanization accelerator 1, Noxeller DZ manufactured by Ouchi Shinsei Chemical Co., Ltd. was used. Further, Noxeller TS of Ouchi Shinsei Chemical Co., Ltd. was used as the vulcanization accelerator 2.

≪Evaluation≫
Here, for each sample, the maximum amplitude of the top of the column main body 102 was evaluated when the wind was light (3 m / s). In addition, a frequency (30 Hz in this test example) corresponding to the natural frequency of the column 100 excluding the column damping device 200 was forcibly applied to the column upper end. Thus, the number of vibrations until metal fatigue occurred in the column main body 102 or the anchor bolt was counted.

As a result, as shown in Table 2, in sample 1, the maximum amplitude generated at the top of the column main body 102 at the time of light wind (3 m / s) was about 10 mm. In addition, the number of vibrations in which metal fatigue occurred was about 1 million times.
In sample 2, the maximum amplitude generated at the top of the column main body 102 during light wind (3 m / s) was about 15 mm. In addition, the number of vibrations in which metal fatigue occurred was approximately 600,000 times.
In sample 3, the maximum amplitude generated at the top of the column main body 102 during light wind (3 m / s) was about 25 mm. The number of vibrations causing metal fatigue was about 450,000 times.
In sample 4, the maximum amplitude generated at the top of the column main body 102 during light wind (3 m / s) was about 30 mm. In addition, the number of vibrations in which metal fatigue occurred was approximately 300,000 times.
In sample 5, the maximum amplitude generated at the top of the column main body 102 during light wind (3 m / s) was about 70 mm. Further, the number of vibrations in which metal fatigue occurs was approximately 100,000 times.

  As described above, when the column vibration damping device 200 is attached as compared with the sample 5 without the column vibration damping device 200, the top of the column main body 102 when light wind (3 m / s) is applied to any sample. In addition, the maximum amplitude generated in the slab was reduced, and the number of vibrations until metal fatigue occurred was significantly increased. Thus, durability of the support | pillar 100 can be improved by attaching the support | pillar damping device 200 which concerns on one Embodiment of this invention.

  In addition, from the comparison from sample 1 to sample 3, the bracket 202 and the high-damping rubber molded body 204 are more evenly arranged around the column body 102 than when the bracket 202 and the molded body 204 of high damping rubber are evenly distributed around the column body 102. In the case of doing so, a better result was obtained. Further, in the case of evenly arranging in eight places around the column main body 102, a better result was obtained in the case of evenly arranging in eight places.

  Further, from comparison between Sample 1 and Sample 4, natural rubber is adopted as the base rubber, high damping rubber 1 having a loss coefficient tan δ = 0.35 at a shear strain of 3% to 20%, and EPDM (ethylene-propylene-diene rubber). Is used as the base rubber, and in the high damping rubber 2 having a loss coefficient tan δ = 0.25 at a shear strain of 3% to 20%, it is preferable to use the high damping rubber 1.

  As described above, the support column 100 according to the embodiment of the present invention includes the support column main body 102 and the support column vibration damping device 200 that are erected on the installed portion 300, as shown in FIG. The strut damping device 200 includes a plurality of brackets 202 and a molded body 204 of high damping rubber. The plurality of brackets 202 have base ends fixed to the installed portion 300 at different positions in the circumferential direction of the column main body 102 and extend along the outer peripheral surface of the column main body 102. The molded body 204 of high damping rubber is disposed between each bracket 202 and the outer peripheral surface of the column main body 102, and is attached to each bracket 202 and the outer peripheral surface of the column main body 102.

  According to the support column 100, vibration generated in the support column main body 102 can be suppressed to a small level and can be attenuated at an early stage. Moreover, since the vibration generated in the column main body can be suppressed to a small value, the column life can be extended.

  In this case, as shown in FIG. 6, the bracket 202 includes a plate-like plate-like portion 222 that extends so as to be substantially parallel to one tangent of a virtual circle around the central axis of the column main body 102. Also good. Moreover, the bracket 202 may include an arc-shaped plate-like portion 222 along the outer peripheral surface of the column main body 102 as shown in FIG.

  Moreover, as shown in FIG. 4, the support damping device 200 may have three or more brackets 202 arranged equally in the circumferential direction of the support main body 102. Further, as shown in FIGS. 10, 12, and 13, the plurality of brackets 202 may be equally arranged in a region in a range of 180 degrees when viewed from the central axis of the column main body 102. With such a configuration, the vibration generated in the column main body 102 can be suppressed more effectively and can be attenuated earlier.

  Further, as shown in FIG. 5, the bracket 202 may be attached to the installation portion 300 with spacers 241 and 242 interposed therebetween. By appropriately adjusting the spacers 241 and 242, it is possible to prevent the high-damping rubber from being greatly deformed in the initial state.

  As shown in FIG. 17, the bracket 202 includes a hinge 228 that connects a base end 224 fixed to the installation target 300 and a plate-like part 222 extending along the outer peripheral surface of the column main body 102. You may have. In this case, the plate-like portion 222 may be configured to swing according to the vibration of the column main body 102. Thereby, the vibration of the column main body 102 can be attenuated more efficiently.

  Moreover, when the foundation buried in the to-be-installed part 300 and the anchor bolts 306a-306h provided in the foundation are provided, the some bracket 202 may be attached to the anchor bolts 306a-306h. Moreover, when the column main body 102 is attached to the anchor bolts 306a to 306h provided on the foundation, the column main body 102 and the plurality of brackets 202 may be attached to the same anchor bolt 306a to 306h. Thereby, the strut damping device 200 can be installed using the existing anchor bolts 306a to 306h.

  Further, the high damping rubber used for the molded body 204 of the high damping rubber may have a loss coefficient tan δ of 0.3 to 1.0 at a shear strain of 3% to 20%. Further, the high damping rubber is composed of one or more rubbers selected from natural rubber, polyisoprene rubber, polybutadiene rubber and butadiene styrene rubber, and the loss coefficient tan δ is 0.5 or more. Good. Thereby, the vibration of the column main body 102 can be suppressed to a low level and can be attenuated early, and the life of the column 100 can be extended.

  For example, as shown in FIG. 6, the molded body 204 of high damping rubber may be covered with a covering rubber 270 having excellent weather resistance. Further, the molded body 204 of high damping rubber may be coated with a coating rubber 270 that is excellent in air blocking properties in addition to weather resistance. Moreover, the support | pillar 100 may be provided with the cover 208 which covers at least the upper part of the molded object 204 of high damping rubber, as shown in FIG.

  As mentioned above, although the support | pillar and the vibration damping device for support | pillar which concern on one Embodiment of this invention were demonstrated, this invention is not limited to embodiment mentioned above.

  For example, in the above-described embodiment, the post for road signs is illustrated, but the post and the vibration damping device for post according to the present invention are not limited to the use for road signs, for example, an antenna post or a flag. Applicable to various struts such as standing struts.

DESCRIPTION OF SYMBOLS 100 Prop 102 Prop body 105 Road sign 111 Frame 112, 113 Main shaft 114, 115 Construction shaft 121 Flat plate 122 Rib 200 Prop damping device 202 Bracket 204 Molded body 208 Cover 222 Plate-like part 224 Base end part 226 Bolt 228 Hinge 241 242 Spacer 270 Covered rubber 300 Placed portion 302 Pile foundation 304 Concrete foundation 306 Anchor bolt

Claims (18)

A column main body standing on the installation part;
At different positions in the circumferential direction of the column main body, a base end is fixed to the installation portion, and a plurality of brackets extending along the outer peripheral surface of the column main body,
A molded body of high damping rubber disposed between each bracket and the outer peripheral surface of the column main body, and attached to each bracket and the outer peripheral surface of the column main body;
The bracket includes a flat plate-like portion extending so as to be substantially parallel to one tangent of a virtual circle around the central axis of the column main body .   The bracket includes a base end portion fixed to the installation portion, and a plate-like portion extending along an outer peripheral surface of the column main body, and the base end portion and the plate-like portion are connected by a hinge. The column according to claim 1, wherein the plate-like portion swings in response to vibration of the column main body.   A column main body standing on the installation part;
  At different positions in the circumferential direction of the column main body, a base end is fixed to the installation portion, and a plurality of brackets extending along the outer peripheral surface of the column main body,
  A molded body of high damping rubber disposed between each bracket and the outer peripheral surface of the column main body, and attached to each bracket and the outer peripheral surface of the column main body;
With
  The bracket includes a base end portion fixed to the installation portion, and a plate-like portion extending along an outer peripheral surface of the column main body, and the base end portion and the plate-like portion are connected by a hinge. And the plate-like portion swings according to the vibration of the column main body. The said bracket is the support | pillar as described in any one of Claim 1 to 3 provided with the circular-arc-shaped plate-shaped part along the outer peripheral surface of a support | pillar main body. The support | pillar described in any one of Claim 1 to 4 with which the said bracket is arrange | positioned equally 3 or more in the circumferential direction of the said support | pillar main body. The column according to any one of claims 1 to 4 , wherein the plurality of brackets are equally arranged in a region in a range of 180 degrees when viewed from a central axis of the column main body. The said bracket is a support | pillar as described in any one of Claim 1-6 attached to the said to-be-installed part via a spacer. A foundation buried in the installation part;
An anchor bolt provided on the foundation,
The strut according to any one of claims 1 to 7, wherein the plurality of brackets are attached to the anchor bolt. The prop body is attached to the anchor bolt provided on the foundation,
The strut according to claim 8, wherein the strut body and the plurality of brackets are attached to the same anchor bolt.   The strut according to any one of claims 1 to 9, wherein the high damping rubber has a loss coefficient tan δ of 0.3 to 1.0 at a shear strain of 3% to 20%.   The high-damping rubber is made of a blend of one or more rubbers selected from natural rubber, polyisoprene rubber, polybutadiene rubber, and butadiene styrene rubber, and has a loss coefficient tan δ of 0.5 or more. The support | pillar described in any one of 1-10.   The support post according to any one of claims 1 to 11, wherein the high-damping rubber is coated with rubber having excellent weather resistance.   The support post according to claim 12, wherein the high-damping rubber is coated with a rubber that is excellent in air barrier properties in addition to weather resistance.   The support | pillar as described in any one of Claim 1-13 provided with the cover which covers the upper part of the molded object of the said high damping rubber at least. A vibration control device attached to the main body of the column,
With respect to different positions in the circumferential direction of the column main body, a base end is fixed to the installation portion, and a plurality of brackets extending along the outer peripheral surface of the column main body,
A molded body of high damping rubber disposed between each bracket and the outer peripheral surface of the column main body, and attached to each bracket and the outer peripheral surface of the column main body ;
The bracket is provided with a vibration damping device for a pillar , which includes a flat plate-like portion extending so as to be substantially parallel to one tangent of a virtual circle around the central axis of the pillar body .   The bracket includes a base end portion fixed to the installation portion, a plate-like portion extending along an outer peripheral surface of the column main body, and a hinge connecting the base end portion and the plate-like portion. Further, the vibration damping device for a support according to claim 15.   A vibration control device attached to the main body of the column,
  With respect to different positions in the circumferential direction of the column main body, a base end is fixed to the installation portion, and a plurality of brackets extending along the outer peripheral surface of the column main body,
  A molded body of high damping rubber disposed between each bracket and the outer peripheral surface of the column main body, and attached to each bracket and the outer peripheral surface of the column main body;
With
  The bracket includes a base end portion fixed to the installation portion, a plate-like portion extending along an outer peripheral surface of the column main body, and a hinge connecting the base end portion and the plate-like portion. The vibration control device for the column.   The said bracket was a vibration suppression apparatus for pillars described in Claim 17 provided with the circular-arc-shaped plate-shaped part along the outer peripheral surface of the said pillar main body.

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