JP2009228225A - Building having vibrational energy absorbing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a building having a vibrational energy absorbing device capable of preventing a space provided on a side of a beam from being contracted to utilize the space effectively. <P>SOLUTION: This building includes a column, a beam having two beam parts being above the column, being parallel for each other, and provided at an interval therebetween in the horizontal direction, and the vibrational energy absorbing device arranged between the other column connected with the beam and the beam part. The vibrational energy absorbing device has a bar-like member having one end part attached to the column, a rotary shaft passing through the other end part of the bar-like member and attached to the beam, a tabular member through which the rotary shaft passes, and a friction member adhering closely to the tabular member. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a building having a vibration energy absorbing device.

Conventionally, in a high-rise building, a seismic wall that surrounds the center of the building, and a plurality of columns arranged around the seismic wall at intervals, are each coupled to the seismic wall, and from the seismic wall, Some include a plurality of beams extending above the pillars and a vibration control device disposed on both sides of each beam (see Patent Document 1). The vibration control device includes a vertically extending cylinder attached to the beam, a rod arranged coaxially with the cylinder inside the cylinder, and a rod attached to the pillar, and inside the cylinder. And a piston fixed to the rod. Inside the cylinder, there are two spaces separated by the piston, and the spaces communicate with each other through a hole penetrating the piston.
JP-A-8-60895

  The building may vibrate in response to seismic force or wind power. At this time, the earthquake-resistant wall undergoes bending deformation, and the beam coupled to the earthquake-resistant wall moves in the vertical direction with respect to the column. As a result, the piston moves in the vertical direction with respect to the cylinder, and oil inside the cylinder flows from one space to the other space through the hole. The oil undergoes viscous resistance as it flows through the holes. For this reason, the vibration energy of the building is consumed as the oil flows through the hole. In this way, the vibration control device absorbs the vibration energy.

  By the way, the space located on the side of the beam is used as a residence or a machine room. However, since the vibration control device is arranged on the side of the beam, the space becomes narrow and the space cannot be used effectively.

  An object of the present invention is to prevent a space located on a side of a beam from being narrowed by the vibration energy absorbing device in a building having the vibration energy absorbing device, and to effectively use the space. .

  According to the present invention, a beam has two beam portions spaced apart in the horizontal direction, and a vibration energy absorbing device is disposed between the beam portions. Thus, the space located on the side of the beam is not narrowed as in the case where the vibration control device is arranged on the side of the beam, and the space can be used effectively.

  The building according to the present invention comprises a column, a beam having two beam portions parallel to each other and spaced horizontally above the column, another column coupled to the beam, A vibration energy absorbing device disposed between the beam portions, having one end attached to the column and the other end attached to the beam.

  Since the beam has the beam portions spaced apart and the vibration energy absorbing device is disposed between the beam portions, as in the case where the vibration control device is disposed on the side of the beam. In addition, the space located on the side of the beam is not narrowed, and the space can be used effectively.

  According to the present invention, a building having a substantially square planar shape and having a central portion having a planar shape corresponding to the planar shape includes a plurality of first inner pillars arranged at corners of the central portion. And a plurality of first outer pillars that are located on a straight line that connects the first inner pillars in the vertical direction and each of the inner pillars is on a straight line that connects the first inner pillars in the lateral direction. A plurality of outer pillars including a plurality of second outer pillars located between the two inner pillars adjacent to each other, between the first inner pillar and the first outer pillars adjacent to each other in the longitudinal direction, A plurality of first beams arranged vertically spaced between the first inner column and the second outer column adjacent to each other in the lateral direction and between the two outer columns adjacent to each other. A plurality of beams, wherein the outer column is between the two first outer columns adjacent to each other in the lateral direction and the vertical column. Including at least one third outer column located between each of the two second outer columns adjacent to each other in the direction, wherein the beams are horizontally spaced above the third outer column A second beam having two beam portions parallel to each other, the second beam being coupled to the two adjacent first outer columns or the two adjacent second outer columns, A vibration energy absorbing device having one end attached to the third outer pillar and the other end attached to the second beam is disposed between the two.

  The third outer column has an extending portion provided at the upper end portion and extending upward from the upper end portion and having a width smaller than the width of the upper end portion when viewed in a vertical cross section perpendicular to the side. The extension portion is received between the beam portions of the second beam, and the vibration energy absorbing device is a rod-like member parallel to the beam portion of the second beam, and one end portion of the second beam is the first beam. A rod-like member attached to the extension portion of the three outer pillars, a rotation axis perpendicular to the rod-like member passing through the other end of the rod-like member and attached to the second beam, and the rotation And at least one plate-like member that is penetrated by the shaft and is perpendicular to the rotation shaft, and a friction material that is in close contact with the plate-like member.

  According to the present invention, the beam has two beam portions spaced apart from each other, and the vibration energy absorbing device is disposed between the beam portions. Therefore, the vibration control device is disposed on the side of the beam. The space located on the side of the beam is not narrowed as in the case of the case, and the space can be used effectively.

  As shown in FIGS. 1 and 2, there is a building 12 having a vibration energy absorbing device 10. The building 12 has a substantially rectangular planar shape, and has a central portion 12a having a planar shape corresponding to the planar shape. The building 12 includes a plurality of inner pillars 14 and 16 arranged at intervals in the central portion 12a, and a plurality of outer pillars 18, 20, 22, and 24 arranged at intervals on the sides of the square. . The inner pillars 14, 16 include four first inner pillars 14 located at the corners of the central portion 12 and at least one second inner pillar 16 located between the first inner pillars. The first inner column 14 has a larger cross-sectional area and a second moment of section than the second inner column 16.

  The outer pillars 18, 20, 22, 24 are each a plurality of first outer pillars 18 positioned on a straight line connecting the first inner pillars 14 in the vertical direction, and straight lines each connecting the first inner pillars 14 in the lateral direction. And a plurality of second outer pillars 20 located above. Further, the outer pillars 18, 20, 22, and 24 are respectively positioned between the two first outer pillars 18 adjacent to each other in the lateral direction and between the two second outer pillars 20 adjacent to each other in the longitudinal direction. At least one third outer pillar 22 and a plurality of fourth outer pillars 24 located at the corners of the building 12. Each of the first outer column 18 and the second outer column 20 has a larger cross-sectional area and a second moment of section than the third outer column 22 and the fourth outer column 24.

  The building 12 includes two inner pillars 14 and 16 adjacent to each other, a first inner pillar 14 and a first outer pillar 18 that are adjacent to each other in the longitudinal direction, and a first inner pillar that is adjacent to each other in the lateral direction. A plurality of first beams 30a, 30b, and 30c arranged at intervals in the vertical direction between the first outer pillar 20 and the second outer pillar 20 and between the two outer pillars 18, 20, 22, and 24 adjacent to each other. including.

  The building 12 includes a second beam 42 having two beam portions 40 parallel to each other above the third outer pillar 22 and spaced horizontally. The second beams 42 are disposed between the two first outer pillars 18 adjacent to each other in the lateral direction and between the two second outer pillars 20 adjacent to each other in the longitudinal direction, and each end portion Are coupled to the first outer column 18 or the second outer column 20.

  As shown in FIG. 1, the first beams 30a, 30b, and 30c include a plurality of first large beams 30a, a plurality of small beams 30b positioned above and below each first large beam, and the first large beams 30a. And a second large beam 30c located above the small beam 30b and positioned at the same height as the second beam 42. The first large beam 30a and the second large beam 30c are larger in cross-sectional area and cross-sectional secondary moment than the small beam 30b.

  The first inner column 14, the first outer column 18, the first large beam 30a and the second large beam 30c between the two inner columns 14, 16 adjacent to each other in the longitudinal direction, the first inner column 14, and the first outer column The first large beam 30a and the second large beam 30c between the pillars 18 constitute a frame structure that resists the vertical component of the horizontal force that the building 10 receives during an earthquake. In addition, the first inner column 14, the second outer column 20, the first and second large beams 30a and 30c between the two inner columns 14 and 16 adjacent in the lateral direction, the first inner column 14 and the first The first large beam 30a and the second large beam 30c between the two outer pillars 20 constitute a frame structure that resists the lateral component of the horizontal force. Each of the inner pillars 14 and 16, the outer pillars 18, 20, 22, 24, the first beams 30a, 30b, and 30c, and the second beam 42 is made of reinforced concrete.

  As for the 1st outer pillar 18, the 2nd outer pillar 20, and the 4th outer pillar 24, the width dimension 26 in the direction orthogonal to the circumferential direction of the building 10 is larger than the width dimension 28 in the said circumferential direction. As a result, the first outer pillar 18, the second outer pillar 20, and the fourth outer pillar 24 can increase external force by increasing the width dimension 26 in the orthogonal direction even if the width dimension 28 in the circumferential direction is reduced. In contrast, sufficient strength can be provided. For this reason, the width dimension 28 in the circumferential direction of the first outer pillar 18, the second outer pillar 20, and the fourth outer pillar 24 can be reduced, and the interval between two adjacent outer pillars can be increased. The lighting in the building 10 and the view from the building can be improved.

  Each of the inner pillars 14 and 16 and the outer pillars 18, 20, 22 and 24 are supported on a foundation 34 by a seismic isolation device 32 (FIG. 1). The seismic isolation device 32 includes, for example, a laminated rubber, that is, a device having a structure in which steel plates and rubber are alternately stacked. The seismic isolation device 32 reduces vibration transmitted from the foundation 34 to the building 10 during an earthquake.

  As shown in FIGS. 3 and 5, the third outer column 22 has an extending portion 38 provided at the upper end portion 36 and extending upward from the upper end portion. The elongated portion 38 has a width 38 a that is smaller than the width 36 a of the upper end portion 36 when viewed in a vertical cross section perpendicular to the square side, and is received between the beam portions 40 of the second beam 42.

  As shown in FIG. 3, the vibration energy absorbing device 10 is disposed between the beam portions 40 of the second beam 42. The vibration energy absorbing device 10 includes a rod-shaped member 46 having one end 44 attached to the extending portion 38 of the third outer pillar 22 and parallel to the beam portion 40 of the second beam 42, and the other end 48 of the rod-shaped member. It has a rotating shaft 50 that passes through the rotating shaft 50 perpendicular to the rod-shaped member 46, at least one plate-shaped member 52 that passes through the rotating shaft and is perpendicular to the rotating shaft 50, and a friction material 54 that is in close contact with the plate-shaped member.

  As shown in FIG. 5, the one end portion 44 of the rod-shaped member 46 is fixed to the elongated portion 38 of the third outer column 22 on both sides of the rod-shaped member 46, as shown in FIG. 5. The mounting member 56 and a pin 58 penetrating the mounting member and the rod-shaped member 46 are used. For this reason, the rod-shaped member 46 can rotate around the pin 58 with respect to the extending portion 38 of the third outer column 22.

  One end portion 58 of the rotation shaft 50 is attached to one beam portion 40 of the second beam 42, and the other end portion 60 of the rotation shaft 50 is attached to the other beam portion 40 of the second beam 42. The rotating shaft 50 can rotate around its axis. The plate-like member 52 is fixed to the rotating shaft 50 and rotates when the rotating shaft 50 rotates.

  As shown in FIGS. 4 and 6, the vibration energy absorbing device 10 includes a casing 62 that is disposed at a distance from the plate-like member 52 and opened upward. The casing 62 is attached to the second beam 42 and accommodates the lower end portion of the plate-like member 52. The friction material 54 is made of a viscous material, such as oil or asphalt, placed in the casing 62, and exists on both sides of the plate-like member 52. The friction material 54 is supported by the second beam 42 via the casing 62, and friction is generated between the plate-like member and the friction material 54 by the rotation of the plate-like member 52.

  The number of the plate-like members 52 is plural in the example shown in FIG. 6, and each plate-like member 52 is spaced from the other plate-like members 52. A plurality of spaces 64 each receiving the lower end portion of the plate-like member 52 are provided in the casing 62, and the viscous body exists in each space. Two spaces 64 adjacent to each other are separated by a partition wall 66 provided inside the casing 62. Instead of the example shown in FIG. 6 in which the partition wall 66 is provided in the casing 62, the partition wall 66 may not be provided in the casing 62. In this case, one space (not shown) for receiving the lower ends of all the plate-like members 52 is provided in the casing 62, and the viscous body exists in the space. The number of the plate-like members 52 can be arbitrarily changed, and may be one instead of a plurality of illustrated examples. Each of the rod-shaped member 46, the rotating shaft 50, the plate-shaped member 52, and the casing 62 may be made of metal or other material such as synthetic resin.

  By the way, the building 12 may vibrate due to a horizontal force caused by an earthquake or wind. At this time, as shown in FIG. 7, the building 12 is deformed and the top of the building is displaced in the horizontal direction. When the top of the building 12 is displaced to one side (the right side in FIG. 7) (in FIG. 7, the building 12 before the top is displaced is indicated by a broken line, and the building 12 after the top is displaced is indicated by a solid line) .), Of the two second beams 42 spaced apart in the horizontal direction, the second beam 42 positioned on the one side is slightly displaced downward and on the other side (left side in FIG. 7). The positioned second beam 42 is slightly displaced upward. Thereafter, when the top of the building 12 is displaced to the other side (not shown), the second beam 42 located on the other side is slightly displaced downwardly, and the second beam 42 located on the one side is located second. The beam 42 is slightly displaced upward. Thus, the second beam 42 repeats the upward displacement and the downward displacement thereof.

  Since the second beam 42 is coupled to the first outer column 18 or the second outer column 20, the second beam 42 is displaced in the vertical direction with the deformation of the first outer column 18 or the second outer column 20. Since the second beam 42 is not coupled to the third outer column 22, the second beam 42 moves relative to the third outer column 22 in the vertical direction when the second beam 42 is displaced in the vertical direction. That is, as shown in FIG. 8, when the second beam 42 is displaced upward, the second beam 42 moves upward with respect to the third outer pillar 22 (the second beam 42 before moving in FIG. 8). Is indicated by a broken line, and the second beam 42 after movement is indicated by a solid line). Also, as shown in FIG. 10, the second beam 42 moves downward with respect to the third outer column 22 by the second beam 42 being displaced downward (the second beam 42 before being moved in FIG. 10). Is indicated by a broken line, and the second beam 42 after movement is indicated by a solid line).

  As shown in FIG. 9, when the second beam 42 moves upward with respect to the third outer column 22, the rod-like member 46 receives a downward force from the third outer column 22 and receives a downward force from the third outer column 22. Rotate around 50. As shown in FIG. 11, when the second beam 42 moves downward with respect to the third outer column 22, the rod-like member 46 receives an upward force from the third outer column 22 at one end 44 thereof. It rotates around the rotation shaft 50. Thus, when the rod-shaped member 46 rotates around the rotation shaft 50, the rotation shaft 50 and the plate-shaped member 52 rotate, and a frictional resistance is generated between the plate-shaped member and the friction material 54. For this reason, the vibration energy of the building 12 is consumed by the rotation of the plate-like member 52. In this way, the vibration energy absorbing device 10 absorbs the vibration energy.

  Since the second beam 42 has two beam portions 40 that are spaced apart from each other, and the vibration energy absorbing device 10 is disposed between the beam portions, a vibration control device is provided on the side of the beam in a conventional building. The space located on the side of the beam as in the case where is arranged is not narrowed, and the space can be used effectively.

  In the example shown in FIG. 6, the friction material 54 is in close contact with a part of the region of the plate-like member 52 that is located below the rotation shaft 50. It may be. By changing the range in which the friction material 54 is in close contact with the plate-like member 52, the magnitude of the frictional resistance can be changed. For example, the frictional resistance can be increased by expanding the range, and the frictional resistance can be decreased by narrowing the range. Thereby, the amount of vibration energy absorbed can be arbitrarily changed.

  In the example shown in FIG. 6, there are a plurality of plate-like members 52 between the rod-like member 46 and each beam portion 40, and the plate-like member 52 has a circular shape having different diameters. The shape of the plate-like member 52 may be a circle having the same diameter instead of the example shown in FIG. 6 which is a circle having a different diameter. The number of the plate-like members 52 and the circular diameter can be arbitrarily changed. Thereby, the magnitude of the frictional resistance can be changed, and the amount of vibration energy absorbed can be arbitrarily changed.

  In the example shown in FIG. 6, the plate-shaped member 52 having a circular shape has a central portion located at the center of the circular shape penetrated by the rotation shaft 50. Incidentally, in general, the angle at which the plate-like member 52 rotates due to the movement of the second beam 42 relative to the third outer column 22 is very small. For this reason, even if the plate-like member 52 rotates, the upper portion of the plate-like member does not come into contact with the friction material 54, and the region of the plate-like member 52 located above the rotation shaft 50 Does not contribute to absorption. For this reason, the plate-like member 52 may be one in which the upper end portion of the plate-like member 52 is penetrated by the rotation shaft 50 instead of the example shown in FIG. In this case, the shape of the plate-like member 52 can be a semicircular shape or a sector shape that protrudes downward.

  The friction material 54 may be made of a member (not shown) such as a brake pad disposed on both sides of the rod-shaped member 46 instead of the example shown in FIG. 6 made of a viscous material put in the casing 62. . The member is supported by the second beam 42. Also in this case, the friction material 54 causes friction between the plate-like member and the friction material 54 by the rotation of the plate-like member 52.

  The method of absorbing vibration energy in the building 12 is as follows. First, the rod-shaped member 46, the rotation shaft 50 passing through the other end 48 of the rod-shaped member and perpendicular to the rod-shaped member 46, and the rotation shaft 50 penetrated by the rotation shaft. A vibration energy absorbing device 10 having at least one plate-like member 52 perpendicular to the plate-like member 52 and a friction material 54 in close contact with the plate-like member is prepared. Next, the vibration energy absorbing device 10 is disposed between the beam portions 40 of the second beam 42 so that the rod-shaped member 46 is parallel to the beam portion 40 of the second beam 42. Thereafter, the one end portion 44 and the rotating shaft 50 of the rod-shaped member 46 are attached to the extending portion 38 and the second beam 42 of the third outer pillar 22, respectively.

  In the example shown in FIG. 2, the second beam 42 is a double-sided beam, but it may be a cantilever instead. For example, the third outer column 22 is positioned on a straight line connecting the second inner column 16 in the vertical direction, and the extension portion 38 of the third outer column 22 is viewed from a vertical section perpendicular to the vertical direction, and the upper end 36. The building 12 has a beam (not shown) having two beam portions parallel to each other and spaced in the width direction of the extension 38 of the third outer column 22. In addition, the beam may be coupled to the second inner pillar 16. In this case, the beam receives the extended portion 38 of the third outer pillar 22 between the beam portions, and the vibration energy absorbing device 10 is disposed between the beam portions. The rod-shaped member 46 of the vibration energy absorbing device 10 is parallel to the beam portion, and the rotation shaft 50 is attached to the beam.

  The vibration energy absorbing device 10 includes a rod-like member 46, a rotary shaft 50 that penetrates the other end 48 of the rod-like member, a plate-like member 52 that is penetrated by the rotary shaft, and a friction material 54 that is in close contact with the plate-like member. A cylinder extending in the vertical direction, a rod disposed coaxially with the cylinder inside the cylinder, and a piston inside the cylinder and fixed to the rod (Not shown) may be used. The cylinder is attached to the second beam 42, and the rod is attached to the upper end 36 of the third outer column 22. In this case, the extending portion 38 may not be provided at the upper end portion 36 of the third outer pillar 22. Inside the cylinder, there are two spaces separated by the piston, and the spaces communicate with each other through a hole penetrating the piston.

  When the second beam 42 moves in the vertical direction with respect to the third outer column 22, the piston moves in the vertical direction with respect to the cylinder, and the oil inside the cylinder passes through the hole from one space to the other. It flows into space. The oil undergoes viscous resistance as it flows through the holes. For this reason, the vibration energy of the building is consumed as the oil flows through the hole. Even in this case, since the vibration energy absorbing device 10 is disposed between the beam portions 40 of the second beam 42, the vibration energy absorbing device 10 is disposed on the side of the beam as in the case where the vibration control device is disposed on the side of the beam. The space where it is located is not narrowed, and the space can be used effectively.

The front view of the building which concerns on this invention. The top view of the building in the line 2 of FIG. FIG. 3 is a plan view of the vibration energy absorbing device taken along line 3 in FIG. 2. FIG. 4 is a side view of the vibration energy absorbing device taken along line 4 in FIG. 3. Sectional drawing of the 3rd outer pillar and 2nd beam in the line 5 of FIG. FIG. 4 is a cross-sectional view of the vibration energy absorbing device taken along line 6 in FIG. 3. FIG. 8 is a side view of the building at line 7 in FIG. 1 when the building is subjected to seismic force or wind power. Sectional drawing of a 3rd outer pillar and a 2nd beam when a 2nd beam is displaced to the upper direction. The side view of a vibration energy absorption device when a 2nd beam has displaced to the upper direction. Sectional drawing of a 3rd outer pillar and a 2nd beam when a 2nd beam has displaced below that. The side view of a vibration energy absorption device when a 2nd beam has displaced below that.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vibration energy absorber 12 Building 18 1st outer pillar 20 2nd outer pillar 22 3rd outer pillar 36 Upper end part 38 Extension part 40 Beam part 42 2nd beam 44 One end part 46 Rod-shaped member 48 Other end part 50 Rotating shaft 52 Plate Shaped member 54 Friction material 62 Casing

Claims (3)

  A column, a beam having two beam portions parallel to each other and spaced horizontally above the column, another column coupled to the beam, and the beam portion. A vibration energy absorbing device having one end attached to the column and the other end attached to the beam. A building having a substantially rectangular planar shape and having a central portion having a planar shape corresponding to the planar shape,
A plurality of inner pillars including four first inner pillars arranged at corners of the central part;
A plurality of first outer pillars that are located on a straight line that connects the first inner pillars in the vertical direction and a plurality of first outer pillars that are located on a straight line that connects the first inner pillars in the lateral direction. A plurality of outer pillars including a second outer pillar;
Between the two inner pillars adjacent to each other, between the first inner pillar and the first outer pillar adjacent to each other in the longitudinal direction, and the first inner pillar and the second outer pillar adjacent to each other in the lateral direction. And a plurality of beams including a plurality of first beams spaced apart in the vertical direction between each of the two outer columns adjacent to each other, and
The outer pillar includes at least one third outer pillar positioned between the two first outer pillars adjacent to each other in the lateral direction and between the two second outer pillars adjacent to each other in the longitudinal direction. ,
The beam includes a second beam having two beam portions parallel to each other above the third outer column and spaced horizontally.
The second beam is coupled to the two adjacent first outer columns or the two adjacent second outer columns,
A building in which a vibration energy absorbing device having one end attached to the third outer pillar and the other end attached to the second beam is disposed between the beam portions. The third outer column has an extending portion provided at the upper end portion and extending upward from the upper end portion and having a width smaller than the width of the upper end portion when viewed in a vertical cross section perpendicular to the side. And
The extension is received between the beam portions of the second beam;
The vibration energy absorbing device is a rod-like member parallel to the beam portion of the second beam, and one end of the rod-like member attached to the extending portion of the third outer column;
A rotating shaft that passes through the other end of the rod-shaped member and is perpendicular to the rod-shaped member and attached to the second beam;
At least one plate-like member that is penetrated by the rotating shaft and is perpendicular to the rotating shaft;
The building according to claim 2, further comprising a friction material in close contact with the plate-like member.

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