JP2006233729A - Aseismatic property improving device and aseismatic property improving method for house - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aseismatic property improving device and an aseismatic property improving method for a house for improving earthquake resistance greatly, preventing occurrence of hindrance in life without requiring living in a temporary house even during period of construction work, reducing cost because remodeling of the inside of the house is unnecessary, and improving earthquake resistance without damaging an existing house. <P>SOLUTION: This aseismatic property improving device is composed of a foundation fixed firmly on the ground near a part just below an external wall of the house, a vibration proof device having a support column fixing its lower part on the foundation and having high rigidity, and a pressure receiving part attached to the vibration proof device to receive shaking of the house by opposing to the house. Shaking of the house is suppressed by transmitting shaking of the house to the pressure receiving part and receiving the transmitted shaking by rigidity of the vibration proof device. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a technology for improving the earthquake resistance of a house, which is designed to receive the shaking of the house and suppress the shaking of the house by a shaking suppressing device having a high-rigid support column attached to a solid foundation provided close to the house.

The following methods are known as main methods for improving the earthquake resistance of a conventional house.
(1) Increase the number of pillars. (2) Make the pillar thick. (3) Increase the wall ratio. (4) Reduce the window area. (4) Add braces to the wall. (5) The wall is made of structural plywood. (6) The assembly parts of the structural members such as columns, beams and girders are fixed to each other with metal members. (7) Make the foundation high-strength reinforced concrete.
and so on.

Therefore, there are the following problems.
(1) Even if the above-mentioned measures for improving seismic resistance are implemented in newly constructed houses so that they conform to the Building Standard Law, the strength against shaking of a large earthquake is significantly insufficient.
(2) In existing houses, when implementing the above-mentioned measures for improving earthquake resistance, the measures that can be adopted are limited.
(3) It is a major remodeling of the house, and during that time, temporary housing is required, which has a major hindrance to daily life.
(4) The interior work needs to be redone, which increases the construction cost.
(5) Even with the greatest possible remodeling work, the strength against shaking of a large earthquake is significantly insufficient.

  A foundation firmly fixed to the ground immediately below the outer wall of the house, a vibration suppressing device having a high-rigid support column fixed to the foundation, and a vibration attached to the vibration suppressing apparatus to face the house and to shake the house A pressure receiving portion that receives the vibration, transmits the vibration of the house to the pressure receiving portion, and receives the transmitted vibration with rigidity of the vibration suppressing device, thereby suppressing the vibration of the house. Seismic improvement device and method for improving earthquake resistance.

  The pressure-receiving surface is in non-bonding contact with the house in a state where the house is not shaken. Or it has approached to the extent which does not contact with the above-mentioned house. Or the earthquake resistance improvement apparatus and the earthquake resistance improvement method characterized by combining with the said house.

An earthquake resistance improving device and an earthquake resistance improving method, characterized in that a shock absorber is attached between the shaking suppressing device and the pressure receiving portion.
The above problem is solved.

  Embodiments of the present invention will be described below.

A typical example will be described as a specific example.
FIG. 1 is a side view of the first embodiment, and FIG. 2 is a front view thereof.
In this embodiment, a lower part 6 of a vibration suppressing device 5 made of a highly rigid support column 4 is attached to a foundation 2 that is integrally attached to a foundation 2 and a foundation 2 of a house 1, and a pressure receiving portion that is attached to the vibration suppressing device 5. 7 has a substantially upright posture so as to face the house 1, and when the house 1 is not shaken, the pressure receiving portion 7 and the house 1 are in a non-coupled state. Non-bonding means a state where the pressure receiving portion 7 and the house 1 are not fixed. In addition, the contact state includes a state where light pressure is applied to the house 1 to a state where pressure is applied to the house 1.
In addition, although the surface which the pressure-receiving part 7 contacts with the house 1 has both the case of the outer wall 8 of the house 1 and the structural member of the house 1, since description becomes redundant, it describes only the house 1 also in subsequent description.

The effect of this method is that when the house 1 is shaken and the house 1 is inclined toward the shake suppressing device 5, the house 1 presses the pressure receiving portion 7, and the reaction force is generated in the shake suppressing device 5 by the pressing force. It becomes the effect which suppresses the fall of the house 1 and reduces shaking.
Since the house 1 and the pressure receiving part 7 are not fixed, when the house 1 is shaken toward the shaking suppression device 5, the shaking is suppressed by the reaction force of the shaking suppression device 5. When swaying in the opposite direction and swaying in the direction perpendicular thereto, the house 1 can move freely without any restriction. Therefore, as shown in FIG. 9, it is desirable to arrange them in a balanced manner on the four surfaces of the house 1, and by doing so, the reaction force of the shaking suppressing device 5 in the direction in which the house 1 sways is generated. As a result, the swing suppression device 5 as a whole can suppress the swing of the house 1 in any direction. Moreover, if the number of the vibration suppression devices 5 is increased, the vibration of the house 1 can be effectively suppressed without difficulty.

  It is desirable that the rigidity of the vibration suppressing device 5 is designed so that the strength of the house 1 is taken into consideration and balanced so as to be as small as possible within the allowable range of damage to the house 1. The earthquake resistance can be improved without damaging the house 1. On the contrary, if the strength of the contact portion on the house 1 side that transmits the shaking force to the pressure receiving part 7 is not sufficient, a high-strength member such as a pillar, girder, or beam is sufficient in advance if it is a newly built house. A structure with strength is desirable. If it is difficult to reinforce by adding a structural member to the house 1 side as in an existing house, is a strength member added so that force is applied to the pillars, girders and beams of the house 1 from the outside of the outer wall 8? Or you may add a member so that force may be applied to members which have intensity, such as a pillar of a house 1, a girder, and an upper beam, on the vibration control device 5 side.

  A unique effect of this method is that the pressure receiving portion 7 and the house 1 are in contact with each other while the house 1 is not shaking, so that the swing suppression effect can be exhibited from the stage where the swing width is small, and the allowable width of the house 1 is allowed to swing. Since the maximum stroke can be taken, there is an effect that the elastic coefficient of the vibration suppressing device 5 can be reduced. Accordingly, the gradient of the reaction force applied to the house 1 can be made gentler, so that the impact applied to the house 1 can be reduced.

Further, in this method, when the pressure receiving portion 7 is in direct contact with the outer wall 8 of the house 1, a contact surface made of a strength member such as an iron plate is previously provided on the outer wall 8 in order to reduce damage to the outer wall surface. It may be provided. As a result, the outer wall 8 can be prevented from being damaged, and the sliding between the pressure receiving portion 7 and the contact surface is smoothly performed.
When the pressure receiving unit 7 is applied to the structure that applies pressure to the house 1, a jack mechanism may be incorporated between the vibration suppressing device 5 and the pressure receiving unit 7.

FIG. 3 shows a second embodiment.
This method is a method of providing a gap between the pressure receiving portion 7 and the outer wall 8 of the house 1 so that the house 1 is not in contact with the stationary part 1. The degree of non-contact is from the degree that the house 1 is slightly shaken to the degree that it is contacted only after a certain degree of shaking.

The effect of this method is that when the swing of the house 1 increases to some extent, the house 1 comes into contact with the pressure receiving portion 7 of the swing suppressing member 5, and when the pressure receiving portion 7 is further pressed, a reaction force is generated in the swing suppressing device 5. It is a force that suppresses shaking and suppresses shaking of the house 1.
Since the pressure receiving unit 5 and the house 1 are not coupled to each other in the same manner as in the first embodiment, when the house 1 is shaken toward the shaking suppressing device 5, a force to press the pressure receiving unit 7 is applied. If you sway in the direction away from the direction and sway in the direction perpendicular to it, you can move freely because it is not restrained at all.

  The unique effect of this method is that it can exert a vibration suppression effect when the house 1 is greatly shaken, but since the pressure receiving portion 7 does not contact the house 1 when there is no problem, the contact surface on the house 1 side is reduced. It will not hurt. Therefore, it is optimal when it is not desired to damage the outer wall 8 that is finished fine.

FIG. 4 shows a third embodiment.
This method is characterized in that the pressure receiving portion 7 of the vibration suppressing device 5 and the house 1 are coupled.
Since the pressure receiving unit 7 and the house 1 are combined, there is an effect of suppressing the swaying of the house 1 in all directions, so that the use of the sway suppressing device 5 is efficient. However, in particular, when the swing of the house 1 swings in the direction away from the swing suppression device 5 and in the left-right direction, a tensile force or a bending force is applied to the structural member of the house 1 coupled to the pressure receiving portion 7. Without strength, it is easily damaged. Therefore, in the case of this method, it is desirable to reinforce the structural members of the house 1 or to firmly bond the structural members to ensure strength. In addition, as shown in FIG. 9, the vibration suppressing device 7 can be arranged on the four surfaces of the house 1 in a well-balanced manner to reduce the width of the house 1 so as to take a countermeasure.

  5 and 6 show a fourth embodiment.

  In this method, a shock absorber 9 is interposed between the vibration suppressing device 5 and the pressure receiving unit 7. In the structure of the shock absorber 9, the hydraulic cylinder 10 is attached to the vibration suppressing device 5, and the pressure receiving portion 7 is attached to the tip of the piston rod 11 of the hydraulic cylinder 10. The pressure receiving portion 7 is always pushed in the direction of the house 1 by a spring 12. A check valve 13 that opens when moving forward and closes when moving backward and a throttle valve 14 are provided in parallel in the pipe connected to the forward and reverse sides of the piston of the hydraulic cylinder 10.

The effect of this method is that when the house 1 is shaken and the pressure receiving part 7 is pushed toward the shake suppressing device 5, the check valve 13 is closed and the speed is limited by the throttle valve 14, but the house 1 is suppressed. When swaying away from the device 5, the check valve 13 is opened, and the pressure receiving portion 7 follows the house 1 by the spring 12 so that it quickly returns.
For this reason, a resistance force is generated only when the house 1 is shaken and the pressure receiving portion 7 is pushed, and an effect of reducing the shake of the house 1 is generated. However, the effect of suppressing the movement of the house 1 does not occur when the swing of the house 1 swings in a direction away from the pressure receiving portion 7 of the swing suppression device 5 and when it swings in the left-right direction. Therefore, as shown in FIG. 9, by arranging the swing suppressing device 5 on the four surfaces of the house 1 in a well-balanced manner, the swing is suppressed by any of the swing suppressing devices 5 regardless of which direction the house 1 swings. As a result, an omnidirectional vibration suppressing effect is produced.

  Thus, when the swing is decelerated by the hydraulic cylinder 10, there is no sudden reaction force on the house 1, so that there is a buffering effect, and at the same time, there is an effect that it can be prevented from resonating especially with a long-period swing. Note that the pressure receiving portion 7 may be in contact with the house 1 as shown in FIG. 5 in a state where the house 1 is not shaken, or a slight gap may be formed between the house 1 and the house 1 as shown in FIG. The difference in effect due to the relationship between the pressure receiving portion 7 and the house 1 is the same as in the first and second embodiments.

FIG. 7 shows a fifth embodiment.
In this embodiment, a hydraulic cylinder 10 is interposed between the vibration suppressing device 5 and the pressure receiving unit 7, and the pressure receiving unit 7 is coupled to the house 1 and in the middle of a pipe connected to the forward side and the reverse side of the hydraulic cylinder 10. A throttle valve 14 is provided.

The effect of this method is that the movement of the piston rod 11 is decelerated by the throttle valve 14 and suppresses the shaking. However, the throttle valve 14 is effective both when the piston rod 11 moves forward and backwards. Becomes a force to pull back even if it swings in a direction away from the swing suppression device 5, and the swing suppression effect is great.
As a unique effect of this method, if this vibration suppression device 5 is installed on two adjacent surfaces of the house 1, omnidirectional vibration can be suppressed, so that the number of vibration suppression devices 5 can be minimized and efficiently installed. It has the feature that it can also be used.

FIG. 8 shows a sixth embodiment.
In this embodiment, an example in which spherical seats 15 are provided on both the cylinder side and the pressure receiving portion 7 side of the hydraulic cylinder 10 is shown. As a method of this joint portion, a universal joint used for a connecting portion of a propeller shaft of an automobile may be used instead of the spherical seat 15, or an elastic member may be interposed.
The characteristic effect of this embodiment is that an unreasonable force is not applied to the vibration suppression device 5 regardless of the direction of the vibration of the house 1 relative to the vibration suppression device 5. This effect can be obtained even if it is adopted in the fifth, sixth and seventh embodiments.

FIG. 9 shows an arrangement example of the vibration suppressing device 5.
If it is arranged in a well-balanced manner on the four sides of the house 1, the shaking of the house 1 can be suppressed more effectively, but it is effective even if used alone or in two or three places to reinforce the weak points of the house 1. .
In addition, since the methods shown in the embodiments have different effects, it is more effective to combine several types by utilizing the features.

In the case of a newly built house, the foundation member 3 that fixes the lower part 6 of the vibration suppressing device 5 is strong when it is made integrally with the reinforcing bar 16 by embedding the reinforcing bar 16 when the foundation 4 of the house 1 is made of reinforced concrete. And it can be made at low cost.
In the case of an existing house, the base member 3 may be reinforced with reinforced concrete integrated with the base 2 of the house 1 on the outside of the base 2 of the house 1, and the base member 3 may be attached to that part.

FIG. 10 shows an example in which the foundation member 3 of the vibration suppressing device 5 is made separately.
This method is a method in which a long and deep hole 17 is dug with a civil engineering drill at a place where the foundation member 3 is attached, concrete is poured into the reinforced concrete column 18, and the foundation member 3 is fixed to the upper part thereof.

11, 12, and 13 are conceptual diagrams of a state before the vibration suppressing device 5 is installed and a state in which the height of the vibration suppressing device 5 is different.
When a two-story house is shaken by an earthquake, it becomes a shake as shown in FIG. 11, and when the pillar on the first floor is inclined beyond a certain angle, the assembly part of the pillar is damaged and the first floor is crushed. The present invention aims at suppressing the inclination of the pillars on the first floor as shown in FIGS.

The invention's effect

Unlike the conventional seismic method for strengthening the internal structure of a house, the method has the following effects because it is a strengthening method from the outside of the house.
(1) The earthquake resistance can be greatly improved.
(2) Since the work can be done outside the house, there is no need for temporary housing during the construction period, and there is little hindrance to life.
(6) Costs are low because there is no need to remodel inside the house.
(7) The earthquake resistance can be improved without damaging existing houses.

Side view of Example 1 Front view of Example 1 Side view of Example 2 Side view of Example 3 Side view of Example 4 Side view of Example 5 Side view of Example 6 Other examples of Example 7 Arrangement example of vibration suppression device Other basic examples Conceptual diagram of shaking without shaking suppression device Conceptual diagram of shaking when the height of the shaking suppression device is medium Conceptual diagram of shaking when the height of the shaking suppression device is the height of the upper beam on the first floor

Explanation of symbols

1. Housing 2. Basic 3. Foundation member 4. Strut 5. 5. Shake suppression device Lower part 7. Pressure receiving unit 8. Outer wall 9. Shock absorber 10. Hydraulic cylinder 11. Piston rod 12. Spring 13. Check valve 14. Throttle valve 15. Spherical seat 16. Rebar 17. Hole 18. Concrete pillar

Claims (5)

  A foundation firmly fixed to the ground immediately below the outer wall of the house, a vibration suppressing device having a high-rigid support column fixed to the foundation, and a vibration attached to the vibration suppressing apparatus to face the house and to shake the house A pressure receiving portion that receives the vibration, transmits the vibration of the house to the pressure receiving portion, and receives the transmitted vibration with rigidity of the vibration suppressing device, thereby suppressing the vibration of the house. Seismic improvement device and method for improving earthquake resistance.   2. The earthquake resistance improvement device and the earthquake resistance improvement method according to claim 1, wherein the pressure receiving portion is in a non-coupled contact state with the house while the house is not shaken.   2. The earthquake resistance improving apparatus and the earthquake resistance improving method according to claim 1, wherein the pressure receiving unit is close to the house so as not to be in contact with the house while the house is not shaken.   2. The earthquake resistance improvement apparatus and the earthquake resistance improvement method according to claim 1, wherein the pressure receiving portion is coupled to the house.   2. The earthquake resistance improving apparatus and the earthquake resistance improving method according to claim 1, wherein a shock absorber is attached between the vibration suppressing device and the pressure receiving portion.

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