JP2001049897A - Mounting structure of dynamic vibration absorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the mounting rigidity of a dynamic vibration absorber while reducing the constitution change of a residence with the disposal of the dynamic vibration absorber. SOLUTION: In a residence, in which a building frame is constituted of steel structure and which has beam-connected rigid frame structure, the dynamic vibration absorber 26 is disposed to a section lower than the top faces of through-beams 1c. The four sides of the dynamic vibration absorber 26 are surrounded by beams 32, 33. The beams for installing the dynamic vibration absorber 26 are built between the beams 32, and the dynamic vibration absorber is mounted on the built beams 33 or between the beams 33. The beams for mounting the dynamic vibration absorber 26 are constructed between the beams 32, and the dynamic vibration absorber 26 is set up to the constructed beams through mounting members. The beams for installing the dynamic vibration absorber 26 are built at positions lower than the through-beams 1c between the beams, and the dynamic vibration absorber 26 is mounted on the built beams or between the beams.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a dynamic vibration absorber to a three-story house or the like having a steel frame made of heavy steel H-shaped steel.

[0002]

2. Description of the Related Art Conventionally, in urban areas, construction of three-story houses has been restricted by regulations such as the Building Standards Law. However, deregulation in recent years has allowed the construction of three-story houses, and demands a house with a different design method and design philosophy from conventional two-story houses. In addition, due to population densification and rising land prices, three-story houses for the purpose of second-generation and third-generation houses tend to be constructed in urban areas. Population crowding has led to an increase in construction work, housing lots around factories and offices, and an increase in traffic volume.Vibration pollution has been regarded as a problem, mainly due to construction work, factories, offices, The source is road traffic. These vibrations are transmitted to the building and may give a feeling of strangeness to the residents in the building. As a method of reducing vibration applied to a structure, Japanese Patent Application Laid-Open No.
As disclosed in Japanese Patent Application Laid-Open No. 13740, there is known a device in which a damping device is disposed between a foundation and a structure, and a device in which vibration control is arranged on the roof of a building as disclosed in Japanese Patent Application Laid-Open No. 10-82208. As described above, there is a demand for a house in which two generations and three generations can live comfortably without being affected by the location conditions.

[0003]

Conventionally, three-story houses using a steel frame structure of the ramen method have been well known, but these are many families, such as condominiums and apartment houses. This is related to a building where residents live, and in the case of a single-family three-story house, it is necessary to design and plan a three-story house with a cost and structure corresponding to that. JP-A-9-1
In the technology disclosed in Japanese Patent No. 3740, it is difficult to sufficiently remove vibration, and it is difficult to adapt to vibration pollution such as traffic vibration even if the load on the building due to the earthquake can be reduced. Further, the technique disclosed in Japanese Patent Application Laid-Open No. 10-82208 controls vibration of a building such as a building having a large mass, and is intended for micro vibration such as traffic vibration occurring in a house having a much smaller mass than a building. I haven't. As described above, it is difficult for the conventional technology to construct a house in which a living space can be freely designed without being influenced by location conditions and a resident can live comfortably.

[0004] In a house, a comfortable living environment can be secured in terms of vibrations such as traffic vibrations by disposing a dynamic vibration absorber for the house. For this purpose, it is necessary to firmly attach the dynamic vibration absorber to the house in order to reliably transmit the vibration of the frame to the dynamic vibration absorber. In addition, when a dynamic vibration absorber is attached to a house, a significant change in the configuration increases construction costs. It is desirable to maintain the basic structure of the house and to install a dynamic vibration absorber.

[0005]

The problem to be solved by the present invention is as described above. Next, a configuration for solving the problem will be described. First, as described in claim 1, in a beam-winning ramen-structured house in which a frame is formed by a steel frame structure on a continuous cloth foundation, the dynamic vibration absorber is fixed to the beam and the position where the dynamic vibration absorber is disposed is passed through. Lower than the upper surface of the beam. Further, as described in claim 2, four sides of the dynamic vibration absorber are surrounded by beams. Thereby, the mounting rigidity of the dynamic vibration absorber can be improved. According to a third aspect of the present invention, a beam for installing a dynamic vibration absorber is erected between the beams, and the dynamic vibration absorber is mounted on or between the erected beams. Further, as described in claim 4, a beam for installing a dynamic vibration absorber is erected between the beams, and the dynamic vibration absorber is attached to the erected beam via a mounting member.
Alternatively, as described in claim 5, a beam for installing a dynamic vibration absorber is provided between the beams and erected at a position lower than the beam, and the dynamic vibration absorber is mounted on or between the erected beams.

[0006]

Next, an embodiment of the present invention will be described. FIG. 1 is a bird's-eye view showing the configuration of a three-story house, and FIG. 2 is a perspective view showing the structure of a through beam 1a of a house used in the present invention and a column / beam joint portion of a first floor column 12 and a second floor column 15. , FIG. 3 is a schematic diagram showing how to receive the vibration of the house, FIG. 4 is a schematic diagram showing an operation configuration of the dynamic vibration absorber, FIG. 5 is a schematic diagram showing a vibration damping mechanism of the dynamic vibration absorber, and FIG. FIG. 7 is a side sectional view of the same, showing a state in which the dynamic vibration absorber is fixed to a beam, and FIG. 9 is a perspective view showing the structure of a dynamic vibration absorber mounting bracket. FIG. 10 is a plan view showing a second embodiment of the configuration of fixing the dynamic vibration absorber to the beam, FIG. 11 is a sectional view taken along line AA in FIG. 10, FIG. 12 is a sectional view taken along line BB in FIG. FIG. 13 is a cross-sectional view taken along line CC in FIG.
FIG. 15 is a plan view showing a third embodiment of the structure for fixing the dynamic vibration absorber to the beam, FIG. 15 is a sectional view taken along line AA in FIG. 14, FIG. 16 is a sectional view taken along line BB in FIG. 14 is a cross-sectional view taken along the line CC, FIG. 18 is a plan view showing a fourth embodiment of the structure for fixing the dynamic vibration absorber to the beam, FIG. 19 is a side view thereof, and FIG. And FIG. 21 is a side view of the fifth embodiment.

Referring to FIGS. 1 and 2, a ramen construction method for a three-story house will be described. The ramen construction method for a three-story house in which a dynamic vibration absorber is provided is not constituted by through columns and beams as shown in FIG. 1, but through beams 1a, 1b, 1c. And columns connected to the through beams 1a, 1b, 1c.

[0008] A through beam 1 is used instead of a pillar having a through column.
a, 1b, 1c, the first-
The second and third floor pillars 15 and the third floor pillar 16 are divided pillars,
As shown in FIG. 2, since the structure is joined to the upper and lower sides of the through beam 1 a, there is a second story column 15 on the first story column 12,
There is no need to have the third-floor pillars 16 on 5 and the required number of pillars on each floor can be freely arranged in a well-balanced manner, so that the number of dividing pillars can be reduced toward the upper floor. . FIG. 2 illustrates a beam-column joint in a ramen method for a house used in the present invention,
Through beam 1a by torcia type high tension bolt
As a structure that connects the first floor column 12 and the second floor column 15, etc., the earthquake resistance is improved.

Next, a vibration-resistant structure of a house used in the present invention will be described with reference to FIG. Unbalanced house 2
In 1b, when the building is subjected to vibration, the building is likely to be twisted. Since the torsion element is added to the vibration generated in this case, the component of the vibration increases, and the temporal change is complicated, and it is difficult to suppress the vibration. Also, the load on the house is large. In the house 21 having a beam winning structure, the required number of columns can be arranged in a well-balanced manner in the beams arranged in the horizontal direction, the balance and rigidity in the horizontal direction are high, and vibrations can be received horizontally.
Thereby, the vibration received by the house can be simplified, and the vibration can be easily suppressed. Further, the load on the house can be reduced, and the durability of the house can be improved.

Next, a description will be given of a mechanism for suppressing vibration of a house by using a dynamic vibration absorber. As shown in FIG. 4, a dynamic vibration absorber 26 is provided at the top of the house, and the vibration transmitted from the vibration source to the house via the ground by the dynamic vibration absorber 26 is eliminated. The house in the state shown in FIG.
When vibration is transmitted to the house as shown in FIG. 4 (b), the house starts to shake as shown in FIG. 4 (c). When the house shakes in this way, the shake is transmitted to the dynamic vibration absorber, and as shown in FIG. 4D, the dynamic vibration absorber gives the house an inertial force using the transmitted vibration. As shown in), the shaking of the house can be eliminated.

Next, the structure of the dynamic vibration absorber will be described. The dynamic vibration absorber generally includes an elastic member S, a damping member D, and a mass body M.
And the mass body M is connected to the frame of the dynamic vibration absorber, and the dynamic vibration absorber is fixed to the house by the frame.
5A, the elastic member S, the damping member D, and the mass body M are coupled together.
It is also possible to connect the mass body M linearly.
Further, as shown in FIG. 5B, the elastic member S and the damping member D
Are connected in parallel and connected to the mass body M. Generally, the mass of the mass M is about 1% of the house. In addition, as shown in FIG. 5C, two dynamic vibration absorbers for absorbing vibration in one direction can be provided to absorb vibration in front, rear, left and right directions. Alternatively, a pair of elastic members S and a damping member D may be connected to one mass body M in the front-rear and left-right directions, respectively, and the vibration in the front-rear and left-right directions may be absorbed by one dynamic vibration absorber. The present invention does not particularly specify a dynamic vibration absorber, but may be any as long as it can be placed in a house and can absorb vibration. In particular, by using one mass body in which a pair of elastic members S and a damping member D acting in the front-rear and left-right directions are connected, the arrangement space of the dynamic vibration absorber can be reduced, and the installation becomes easy.

As described above, a dynamic vibration absorber generally has an elastic member, a damping member, and a mass body, and thus has a certain frequency characteristic. The frequency characteristic is a frequency at which the mass body is easily displaced, and can be adjusted by changing the characteristics (elastic coefficient, friction coefficient or viscosity) of the elastic member and the damping member. Also, due to the damping member,
In order to reduce the vibration by converting the vibration into heat energy, a certain stroke is required for the damping member to operate. Further, a certain stroke is required to cancel the vibration by the inertial force generated in the mass body. Therefore, the vibration that is absorbed by the dynamic vibration absorber has a large period to some extent. The target range of vibration pollution is generally 1 to 80 Hz. The dynamic vibration absorber should just correspond to a frequency of 2 to 5 Hz which is particularly easy for residents to feel in this range of frequencies. In this range, the vibration of the house is reduced by the dynamic vibration absorber.

Next, the arrangement of the dynamic vibration absorber will be described. As described above, the dynamic vibration absorber is provided at an upper part of a house in order to reduce vibration transmitted to the house. Also, in order to efficiently absorb vibration, it is necessary to increase the rigidity of the dynamic vibration absorber. If the rigidity of the dynamic vibration absorber attached to the frame is low, play occurs due to the deformation of the connecting part of the dynamic vibration absorber at the time of vibration suppression, and it becomes difficult for the vibration of the house to be transmitted to the dynamic vibration absorber. Similarly, it is conceivable that the resistance to the vibration by the dynamic vibration absorber is hardly transmitted to the house. For this reason, when installing a dynamic vibration absorber in a house, it is necessary to increase the mounting rigidity of the dynamic vibration absorber and to efficiently transmit the vibration to the dynamic vibration absorber and the resistance to the vibration of the dynamic vibration absorber to the house. There is.

In FIG. 6, a dynamic vibration absorber 26 is fixedly mounted on a beam 1c serving as a roof beam of a house. The dynamic vibration absorber 26 is surrounded on all sides by a beam connected to the beam 1c disposed on the upper part of the frame. Since the four sides of the dynamic vibration absorber 26 are surrounded by the beams, the rigidity of the dynamic vibration absorber 26 attached to the beam 1c can be increased, and the four sides of the dynamic vibration absorber 26 are surrounded by the beams 1c. It is possible to improve the rigidity balance in the front-rear and left-right directions of the vibration absorber 26, and realize uniform mounting rigidity of the dynamic vibration absorber 26. Thereby, it is constituted so that the vibration absorbing force of the dynamic vibration absorber 26 can be transmitted to the whole house.

Next, a first embodiment of the mounting structure of the dynamic vibration absorber 26 to the beam will be described with reference to FIGS. The dynamic vibration absorber 26 is disposed between the beams 1c. The beam 1
c, the dynamic vibration absorber 26 is fixedly mounted via a mounting member 31. Between the beams 1c, 1c, the upper surface of the dynamic vibration absorber 26 is installed so as not to protrude above the beam 1c. Dynamic vibration absorber 2
Since the upper surface of 6 is equal to or less than the height of the upper surface of the beam 1c, the roof plate ALC can be disposed on the beam, and the arrangement of the dynamic vibration absorber 26 does not affect the arrangement of the ALC. Therefore, the dynamic vibration absorber 26 can be provided between the beams without changing the basic configuration of the house. That is, the dynamic vibration absorber 2
Since the upper surface of 6 is configured to be lower than the upper surface of the through beam 1c, it is not necessary to change the arrangement of the constituent members of the house disposed above the beam 1c. Thus, the dynamic vibration absorber can be provided without greatly changing the conventional construction method, and the increase in construction cost can be reduced.

As shown in FIG. 9, the mounting member 31 is formed in a step-like shape in a side view, and has a shape in which plates perpendicular to each other are connected so as to reinforce the step-like plate. ing. The upper surface of the high side plate body of the mounting member 31 is fixed to the lower surface of the beam 1c by fastening bolts. The upper surface of the lower side plate of the mounting member 31 is fixed to the lower surface of the dynamic vibration absorber 26 by fastening bolts. That is, the mounting member 31 allows the dynamic vibration absorber 2
6 is configured such that the lower surface thereof is located below the lower surface of the beam 1c. Thereby, even when the height of the dynamic vibration absorber 26 is higher than the height of the beam 1c, the dynamic vibration absorber 26
Is disposed such that the upper surface of the beam is lower than the upper surface of the beam 1c. Since the mounting member 31 is connected to the lower surface of the beam 1c and the lower surface of the dynamic vibration absorber 26, the connection area between the mounting member 31 and the beam 1c and the dynamic vibration absorber 26 can be increased, and the load on the connecting portion can be reduced. At the same time, the rigidity of the dynamic vibration absorber 26 attached to the beam 1c can be improved.

Next, a second embodiment of the mounting structure of the dynamic vibration absorber 26 to the beam will be described with reference to FIGS. The dynamic vibration absorber used in the second embodiment includes a frame 26b and a main body 26c,
The main body 26c is disposed on the frame 26b to form the dynamic vibration absorber 26. On the front, rear, left and right of the dynamic vibration absorber 26,
Beams 32 and 33 are provided, and the beam 33 is a plate 33.
It is fixed to the beam 32 via b. The beam 32 is fixed to the beam 1c. Dynamic damper 26 and beam 3
2 and 33 are connected by a mounting member 34. The mounting member 34 is formed by forming a plate-like member into an L-shape in a side view, and has two stays 34a on the outside (opposite to the bending direction). The stay 34a is disposed in the vertical direction, and is fixed to the beams 32 and 33. The frame 26b of the dynamic vibration absorber 26 is disposed above the horizontal portion below the mounting member 34, and is fixed by bolts. The mounting members 34 are disposed on four sides of the dynamic vibration absorber 26, and efficiently transmit the resistance to vibration from the dynamic vibration absorber 26 to the beams 33 and 32. In addition, the rigidity of the portion where the dynamic vibration absorber 26 is disposed is
Is improved by being connected. For this reason, it is possible to reduce a decrease in the vibration absorbing force due to the deformation of the beam.

Next, a third embodiment of the mounting structure of the dynamic vibration absorber 26 to the beam will be described with reference to FIGS. In the third embodiment, beams 32 and 33 are provided on the front, rear, left and right of the dynamic vibration absorber 26, and the beams 33 are fixed to the beams 32 via a plate 33c. The beam 33 is disposed at a position lower than the beam 32, and as shown in FIG. 16, the upper portion of the beam 32 and the center of the beam 33 are connected by a plate 33c. Frame 2 of dynamic vibration absorber 26
6b is composed of two sets of H steel. Of these, the H steels arranged in parallel with the beam 32 are connected to the beams 33, 33, respectively, and another set of H steels is connected to the one set of H steels so as to be orthogonal to each other to form the frame 26b. ing. The frame 26b is fixed to the beam 33,
The main body 26c is disposed on the main body 26b. As described above, the dynamic vibration absorber 26 is directly connected to the beam 33 by the frame 26b.
The vibration absorber 26 is fixed to the beam by a simple structure without the need for a metal fitting for connection.
Efficient suppression of vibration can be performed.

Next, a fourth embodiment of the mounting structure of the dynamic vibration absorber 26 to the beam will be described with reference to FIGS. Beams 35 are provided between the beams 32, and the beams 32 are fixed via plates. The beam 35 is made of H steel having a smaller height dimension than the beam 32, and is configured such that the lower surfaces of the beams 32 and 35 have the same height. The dynamic vibration absorber 26 is disposed on the upper surface of the beam 35, and the dynamic vibration absorber 26 is fixed to the beam 35. For this reason, the dynamic vibration absorber 26 can be fixed to the beam with a simple configuration, the number of connection points between the dynamic vibration absorber 26 and the frame of the house can be reduced, play at the connection portion can be reduced, and the mounting rigidity of the dynamic vibration absorber 26 can be reduced. Can be easily improved.

Next, a fifth embodiment of the mounting structure of the dynamic vibration absorber 26 to the beam will be described with reference to FIGS. In the fifth embodiment, the dynamic vibration absorber 26 has a beam 35.
32, and mounting members 36, 36, 36,...
Are fixed to the beams 32 and 35. The mounting member 36 is formed in a stepped shape, and the dynamic vibration absorber 2 is provided.
6 is disposed at a position lower than the lower surfaces of the beams 32 and 35. In order to fix the dynamic vibration absorber 26 to the beam via the mounting member 36, as shown in FIG.
2 can be lower than the upper surface position. Thereby, the dynamic vibration absorber 2
By arranging 6, there is no need to change the arrangement of the skeleton and the ALC fixed on the skeleton, and a house corresponding to traffic vibration can be easily configured.

[0021]

As described above, the present invention has the following advantages. As set forth in claim 1, in a beam-winning rigid-frame structure housing in which a frame is constituted by a steel frame structure on a continuous cloth foundation, the dynamic vibration absorber is fixed to the beam, and the position of the dynamic vibration absorber is passed through the beam. Since it is configured to be lower than the upper surface, it is possible to dispose the dynamic vibration absorber without affecting the ALC or the like disposed on the beam. In addition, there is no need to change the arrangement of the constituent members of the house provided above the through beam. Thus, the dynamic vibration absorber can be provided without greatly changing the conventional construction method, and the increase in cost can be reduced.

According to a second aspect of the present invention, in a housing with a beam-winning ramen structure in which a frame is formed by a steel structure on a continuous cloth foundation, a structure in which four sides of a dynamic vibration absorber are surrounded by beams.
It is possible to increase the mounting rigidity of the dynamic vibration absorber to the beam,
Further, the rigidity of the dynamic vibration absorber in the front-rear and left-right directions can be well balanced, and uniform mounting rigidity of the dynamic vibration absorber can be realized. Thus, the vibration absorbing force of the dynamic vibration absorber can be efficiently transmitted to the entire house.

According to a third aspect of the present invention, in a house having a beam-winning ramen structure in which a frame is formed by a steel structure on a continuous cloth foundation, a beam for installing a dynamic vibration absorber between the beams is erected, and the beam is installed on the erected beam or Since the dynamic vibration absorber is installed between the beams,
The rigidity of the beam to which the dynamic vibration absorber is fixed can be easily improved, and the loss of vibration reduction of the dynamic vibration absorber due to deformation of the through beam can be reduced. Further, since the efficiency of transmitting vibration to the dynamic vibration absorber is improved, the vibration damping effect can be improved.

According to a fourth aspect of the present invention, in a beam-winning ramen-structured house having a steel frame structure on a continuous cloth foundation, a beam for installing a dynamic vibration absorber between the beams is erected and attached to the erected beam. Since the dynamic vibration absorber is mounted via the member, the mounting position of the dynamic vibration absorber can be easily adjusted by the configuration via the mounting member. In addition, the erection of the beam on which the dynamic vibration absorber is provided can be used for connecting the beam when forming the skeleton.

According to a fifth aspect of the present invention, in a beam-winning rigid-frame housing having a steel frame structure on a continuous cloth foundation, a beam for installing a dynamic vibration absorber between beams is erected at a position lower than the beam. Since the dynamic vibration absorber is mounted on or between the erected beams, the mounting position of the dynamic vibration absorber can be easily adjusted, and the dynamic vibration absorber can be directly arranged on the beam, so that the mounting rigidity can be improved. .

[Brief description of the drawings]

FIG. 1 is an overhead view showing a ramen construction method for a three-story house.

FIG. 2 is a perspective view showing a structure of a through beam 1a, and a column / beam joint portion of a first floor column 12 and a second floor column 15;

FIG. 3 is a schematic diagram showing how to receive vibration of a house.

FIG. 4 is a schematic diagram showing an operation configuration of the dynamic vibration absorber.

FIG. 5 is a schematic diagram showing a configuration of a dynamic vibration absorber.

FIG. 6 is a perspective view showing a state where the dynamic vibration absorber is fixed to a skeleton.

FIG. 7 is a side sectional view of the same.

FIG. 8 is a side view showing a configuration for fixing the dynamic vibration absorber to a beam.

FIG. 9 is a perspective view showing a configuration of a fitting for mounting a dynamic vibration absorber.

FIG. 10 is a plan view showing a second embodiment of the structure for fixing the dynamic vibration absorber to the beam.

FIG. 11 is a sectional view taken along line AA in FIG. 10;

FIG. 12 is a sectional view taken along line BB in FIG. 10;

FIG. 13 is a sectional view taken along line CC in FIG. 10;

FIG. 14 is a plan view showing a third embodiment of the structure for fixing the dynamic vibration absorber to the beam.

FIG. 15 is a sectional view taken along line AA in FIG. 14;

FIG. 16 is a sectional view taken along line BB in FIG. 14;

FIG. 17 is a sectional view taken along line CC in FIG. 14;

FIG. 18 is a plan view showing a fourth embodiment of the structure for fixing the dynamic vibration absorber to the beam.

FIG. 19 is a side view of the same.

FIG. 20 is a plan view showing a fifth embodiment of the structure for fixing the dynamic vibration absorber to the beam.

FIG. 21 is a side view of the same.

[Explanation of symbols]

 1a, 1b, 1c Through beam 15 Second floor column 16 Third floor column 25 Base 26 Dynamic vibration absorber 31 Mounting member 32, 33 Beam 33c Plate 34 Mounting member 35 Beam 36 Mounting member

Claims (5)

[Claims] Claims: 1. In a housing with a beam-winning rigid frame structure in which a skeleton is constituted by a steel frame structure on a continuous cloth foundation, a dynamic vibration absorber is fixed to a beam, and a position where the dynamic vibration absorber is disposed is below the upper surface of the beam. A mounting structure for a dynamic vibration absorber. 2. A mounting structure for a dynamic vibration absorber, wherein beams are surrounded on all sides of a dynamic vibration absorber in a beam-winning rigid frame structure in which a frame is formed by a steel frame structure on a continuous cloth foundation. 3. In a house with a beam-winning rigid frame structure having a steel frame structure on a continuous cloth foundation, a beam for installing a dynamic vibration absorber between the beams is erected, and the dynamic vibration absorber is mounted on or between the erected beams. A mounting structure for a dynamic vibration absorber characterized by being mounted. 4. In a house having a beam-winning rigid frame structure in which a frame is constituted by a steel frame structure on a continuous cloth foundation, a beam for installing a dynamic vibration absorber between the beams is erected, and a dynamic vibration absorber is attached to the erected beam via a mounting member. A mounting structure for a dynamic vibration absorber characterized by mounting a vessel. 5. In a beam-winning rigid-frame house having a frame structure formed of a steel structure on a continuous cloth foundation, a beam for installing a dynamic vibration absorber between beams is erected at a lower position than a beam, and the beam is installed on the erected beam or A mounting structure for a dynamic vibration absorber, wherein a dynamic vibration absorber is mounted between beams.