JP3729383B2 - Vibration control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration damping device installed in a building, and more particularly to an improvement of a vibration damping device that prevents a high-rise building from being affected by an external force such as an earthquake.
[0002]
[Prior art]
There have been various proposals for a vibration damping device that is installed in a building so that the building is not affected by an external force such as an earthquake. Among them, for example, as shown in FIG. A pair of pillars P1 and P2 which are erected on the ground B side and the like and a pair of pillars P1 and P2 on the left and right sides, an upper horizontal member B1 such as a beam distributed between the left and right pillars P1 and P2, and the above-mentioned ground G side. By selectively controlling the stretchable body 2 connected to the brace 1 arranged in the wall space (not shown) and connected to the brace 1 to improve the earthquake resistance in the building, either in a stretchable or non-stretchable state. Some are set so that the effect of brace 1 can be selected.
[0003]
Incidentally, the brace 1 is set in a V shape consisting of two brace members 11 and 12 in the drawing, and one end consisting of the upper ends of the brace members 11 and 12 having an appropriate correlation interval is located on the upper side. It is supposed that the other end consisting of the lower end where the brace members 11 and 12 converge is arranged in a state of facing the lower ground B side while being provided continuously on the base material B1 side.
[0004]
And the expansion-contraction body 2 is set to the aspect of the double rod type hydraulic cylinder from which the rod body 22 protrudes from the both ends of the cylinder body 21 in the figure, and the cylinder which comprises the one end side in this expansion-contraction body 2 is shown. While the body 21 is connected to the ground B side, the rod body 22 constituting the other end side of the stretchable body 2 is connected to the other end that converges at the lower end of the brace 1. .
[0005]
Of course, when the building has two or three layers, the ground B can be replaced by the horizontal member B2 below the beam (see FIG. 1).
[0006]
Further, for example, as shown in FIG. 5, when the piston 23 connected to the rod body 22 moves left in the cylinder body 21 in the drawing, the expansion body 2 is partitioned into the cylinder body 21 by the piston 23. The oil in one oil chamber R1 flows into the other oil chamber R2 via the check valve 31, the logic valve 4 and the check valve 32, and, conversely, the piston 23 moves rightward in the figure in the cylinder body 21. In this case, the oil in the other oil chamber R2, which is also partitioned in the cylinder body 21 by the piston 23, flows into the one oil chamber R1 via the check valve 33, the logic valve 4 and the check valve 34. Yes.
[0007]
The check valves 32 and 34 are respectively connected in parallel with damping valves 35 and 36. Therefore, when the piston 23 slides in the cylinder body 21, that is, the expansion and contraction set to the mode of the hydraulic cylinder. The body 2 is set so as to exhibit a damper function when expanding and contracting.
[0008]
The logic valve 4 is operated when the electromagnetic on-off valve 5 set to a normally closed type that switches to a communication position that is turned on by a command signal from an external controller (not shown) is in an off state that is a cutoff position shown in the figure. Is blocked to prevent upstream communication with the downstream side through the logic valve 4. Although not shown, when the electromagnetic on-off valve 5 is energized and turned on, the operation is allowed. Thus, it is set so as to allow the communication from the upstream side to the downstream side through the logic valve 4.
[0009]
Therefore, in the above-described expansion / contraction body 2, by selecting the operation of the electromagnetic on-off valve 5, that is, by selecting on / off, the expansion / contraction body 2 can be expanded or contracted either in a so-called locked state. It becomes possible to control.
[0010]
In addition, in this expansion-contraction body 2, when the electromagnetic on-off valve 5 is in an OFF state and the expansion-contraction body 2 is locked, the brace 1 is completely ineffective because the expansion-contraction body 2 is not completely locked. Instead of setting the state, the degree of the inactive state of the brace 1 can be changed by setting the damping valves 35 and 36.
[0011]
Therefore, in the conventional vibration damping device having the expansion / contraction body 2, the brace 1 is said to be a brace if the electromagnetic on / off valve 5 is kept in the off state and the expansion / contraction body 2 is kept locked. It functions as a high rigidity in the building.
[0012]
As a result, for example, when the ground B side vibrates in the horizontal direction which is in the opposite phase to the upper horizontal member B1 due to the vibration caused by the earthquake, that is, as shown by the arrow in FIG. Even when the B side vibrates horizontally, it can prevent the building from being affected by an earthquake because the rigidity in the building is increased, that is, the building can be prevented from collapsing. .
[0013]
Further, in this conventional vibration damping device, when the electromagnetic on-off valve 5 is switched from the OFF state to the ON state, the lock state of the telescopic body 2 is released and the brace 1 cannot function as a brace. Thus, the rigidity in the building can be reduced.
[0014]
As a result, for example, when the vibration on the ground B side caused by the earthquake is extremely small, the vibration is absorbed by the building itself so that the building is affected by the earthquake. You can stop shaking.
[0015]
Further, in this conventional vibration damping device, even if the expansion / contraction body 2 is maintained in the locked state, the brace 1 is not completely inactivated, but the degree of the brace 1 in the inactivated state can be changed. Therefore, for example, by making the brace 1 ineffective with a damping function that is a damper function depending on the magnitude of the earthquake, the building is made to absorb the seismic energy so that the effect of the earthquake on the building is not made obvious. Is also possible.
[0016]
As a result, the above-mentioned vibration control devices are installed in the wall spaces that are orthogonal to each other in the building, and the normally closed type is based on the type and size of the external force acting on the building. By opening the electromagnetic on-off valve 5, the expansion / contraction state of the expansion / contraction body 2 is selected to select the effective / ineffective state of the brace 1, and the building is affected by an external force such as an earthquake or wind. It becomes possible to avoid receiving.
[0017]
[Problems to be solved by the invention]
However, the above-described conventional vibration damping device may be pointed out to have the following problems.
[0018]
That is, in the above-described vibration damping device, the brace 1 whose effectiveness or ineffectiveness is selected by selectively controlling the stretchable body 2 to either the stretchable state or the non-stretchable state is essentially: It is distributed in a wall space composed of a pair of pillars P1, P2 and the upper horizontal member B1 and the ground B or the lower horizontal member B2, so as to increase the rigidity in the building, and the earthquake resistance in the building It is distributed to improve the performance.
[0019]
Therefore, when the building is a one-story, two-story or three-story low-rise building, the brace 1 distributed in the wall space increases the rigidity of the building when it functions as a brace. It can be said that it is effective for improving the earthquake resistance of the building, but when the building becomes a high-rise building, especially when it is considered as a high-rise building including the super high-rise buildings that are often seen in recent years. The above vibration damping device cannot be used as it is.
[0020]
That is, especially in the case of a super high-rise building, it is well known that a high-rise building, for example, whirls in the event of an earthquake, but the whole building shakes like a so-called wave, It is well known that high-rise buildings are not affected by earthquakes, that is, high-rise buildings do not collapse due to earthquakes by shaking like this.
[0021]
For example, in a high-rise building that is shaken by an earthquake, the way of shaking on each floor is not uniform, for example, the direction of shaking is opposite, or the stroke of shaking may be different. Easy to assume.
[0022]
Therefore, if the above-mentioned vibration control device is used to deal with this situation unconditionally, the intended purpose cannot be achieved on all floors, and the high-rise buildings will be affected by the earthquake. It is easily assumed that it will not be possible to avoid it.
[0023]
The present invention was created in view of the above-described circumstances, and its purpose is to prevent high-rise buildings from being affected by earthquakes and winds on each floor. It is to provide an anti-vibration device that can be expected to be improved in versatility without being affected by the above-described problem, and particularly suitable for mounting on a high-rise building.
[0024]
[Means for Solving the Problems]
In order to achieve the above-described object, the structure of the present invention is basically a wall formed by columns arranged on the left and right and horizontal members such as beams arranged above and below the columns on the left and right. It has a stretchable body that is distributed in the space and is connected to a brace that improves the earthquake resistance of the building. By making this stretchable body non-stretchable, the brace is made effective or stretchable. In the vibration damping device that is set so that the brace can be inactivated, the expansion and contraction bodies are respectively disposed in the wall space of the multilayer floor and are slidably accommodated in the cylinder body constituting the expansion and contraction body. In addition, two oil chambers defined in the cylinder body by a piston continuously connected to the rod body that can be inserted into and retracted from the cylinder body are disposed outside the cylinder body and the oil passage. Open operation An electromagnetic on-off valve that is communicable with each other via a logic valve and in which a control means for enabling the opening of the logic valve is disposed behind the logic valve; and A stationary state switching valve disposed between the valve and the brace that makes the expansion / contraction body extendable or non-extensible by the selected switching operation for the steady state switching valve and the electromagnetic on-off valve. Suppose that it is set so that it can be in the effective state or ineffective state.
[0025]
In the above configuration, more specifically, the electromagnetic on-off valve is a directional switching valve and is set to either a normally closed type or a normally open type, and the steady state switching valve is operated by an external force such as a manual operation. It is preferable to consist of a directional switching valve that switches at.
[0026]
Therefore, in this vibration damping device, for example, when the electromagnetic on-off valve is set to a normally closed type and is in a so-called cutoff position and in an off state, the steady-state switching valve is connected to the logic valve side and the electromagnetic on-off valve. Even if it is in one so-called communication position that allows communication with the valve side, the logic valve cannot open, the expansion / contraction body becomes non-expandable, and the brace functions as a brace.
[0027]
At this time, if the electromagnetic on-off valve is switched to the on state, which is a so-called communication position, the steady state switching valve remains in one communication position, so that the logic valve can be opened, The body becomes stretchable and the brace becomes ineffective, which cannot function as a brace.
[0028]
On the other hand, when the electromagnetic open / close valve is set to a normally open type, is in the communication position and is in the ON state, and the steady state switching valve remains in the one communication position, the logic valve is opened. As a result, the stretchable body becomes stretchable and the brace becomes ineffective.
[0029]
At this time, if the electromagnetic on-off valve is switched to the off state, which is the shut-off position, even if the steady state switching valve is in one communication position, the logic valve cannot be opened and the telescopic body cannot be expanded or contracted. And the brace becomes effective.
[0030]
The brace effect state and the ineffective state are switched to the opposite states when the steady state switching valve is switched by an external force operation such as a manual operation.
[0031]
By the way, when the brace is in an effective state, the rigidity in the building is high and the building cannot be affected by the earthquake, and when the brace is in an ineffective state, the rigidity in the building is low. Thus, for example, it is possible to cause the building to absorb vibration energy so that the influence of vibration in the building does not become obvious.
[0032]
Therefore, the above-described vibration damping device is installed in each of the multi-story wall spaces that are orthogonal to each other in the building, and the electromagnetic on-off valve is based on the type and magnitude of vibration acting on the building. In addition, by switching the steady state switching valve by an external force operation, it is possible to arbitrarily select whether or not the expansion and contraction of the expansion / contraction body arranged in each wall space can be performed. The effect of the brace is selected so that the building is not affected by vibration caused by an earthquake or the like.
[0033]
As a result, for example, in a high-rise building including the case of a super high-rise building, it becomes a multi-story floor based on the result of determining how the high-rise building shakes due to earthquakes and winds in advance simulation. By setting each brace in the wall space so that it can function as a brace and not as a brace, the entire high-rise building can sway in a so-called wave. It will be allowed and the high-rise building will not be affected by the earthquake, i.e. the high-rise building will not be destroyed by the earthquake.
[0034]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings. Even in the vibration damping device according to the present invention, the so-called appearance is configured in the same manner as the above-described conventional vibration damping device. .
[0035]
Therefore, in the vibration damping device according to the present invention, where the configuration is the same as that of the conventional example, only the same reference numerals are given in the drawing, and detailed description thereof is omitted unless necessary. The following description will focus on the features of the present invention.
[0036]
Incidentally, since the vibration damping device according to the present invention is used for a high-rise building when the building includes a super-high-rise building, a plurality of beams arranged vertically between the pillars P1 and P2 arranged on the left and right Of the horizontal members B1 and B2, the horizontal member B2 on the lowest floor is on the ground B side, but the basic contents are not changed.
[0037]
Further, in this embodiment, the brace 1 is set in a V-shape composed of two brace members 11 and 12, but as a result, the intended purpose is achieved while the elastic body 2 is interposed. If it exists, it may be a free configuration.
[0038]
In addition, the stretchable body 2 only needs to be configured so as to exhibit a damper function during expansion and contraction, and in the illustrated case, the rod body 22 is set in a mode of a double rod type damper in which the rod body 22 projects from both ends. However, instead of this, as in the above-described conventional example, it is set as a mode of a double rod type hydraulic cylinder on the condition that the damping valves 35 and 36 are arranged in parallel with the check valves 32 and 34. Also good.
[0039]
And when the expansion-contraction body 2 is comprised in the aspect of a damper, in embodiment shown in figure, as shown in FIG. 2, two oil chamber R1, R2 in the cylinder body 21 is made into said damping valve 35,36. In the cylinder body 21, relief valves 24 and 25 for setting the maximum relief pressure are arranged in the cylinder body 21.
[0040]
Thus, when the expansion / contraction body 2 is set to have the relief valves 24 and 25 in addition to the attenuation valves 35 and 36, basically, the expansion / contraction body 2 is maintained in a locked state. However, the size of the external force acting on the expansion / contraction body 2 makes the expansion / contraction body 2 expand / contract with generation of a damping force. For example, it is invited by maintaining the rigidity of the brace 1. The occurrence of certain harmful effects can be avoided.
[0041]
As a result, for example, when a building is affected by vibrations caused by an earthquake, the brace 1 is not maintained in a completely effective state, but the brace 1 is accompanied by a damping action by a damper that is a stretchable body 2. Ineffective state, avoiding the impact of the earthquake on the building, that is, depending on the magnitude of the earthquake, by ineffectively absorbing the seismic energy in the building, the earthquake will not be experienced, that is, the earthquake It is possible to avoid experiencing the effects.
[0042]
By the way, said expansion body 2 shall be comprised as follows. First, in principle, this expansion body 2 is connected to the rod body 22 as shown in FIG. When the piston 23 moves left in the cylinder body 21 in FIG. 2, the oil in one oil chamber R <b> 1 passes through the check valve 31, the logic valve 4, the control means (not shown) and the check valve 32 to the other oil. It is configured to flow into the chamber R2.
[0043]
In contrast to the above, when the piston 23 moves in the cylinder body 21 to the right in FIG. 2, the oil in the other oil chamber R <b> 2 is supplied from the check valve 33, logic valve 4, control means, and check. It is configured to flow into one oil chamber R1 via the valve 34.
[0044]
In the illustrated embodiment, as shown in FIGS. 2 and 3, the logic valve 4 prevents the poppet 41 from moving forward when oil flow in the control means described later is blocked. While not shown in the figure, the flow of oil in the valve 4 is blocked, and when the oil is allowed to flow in the control means, a pressure is generated between the upstream side and the downstream side of the poppet 41. The poppet 41 is allowed to advance against the urging force of the spring 42 so that the oil can flow through the logic valve 4.
[0045]
On the other hand, the control means is in this embodiment, and as shown in FIGS. 2 and 3, the electromagnetic on-off valve 5 set to a normally closed type disposed behind the logic valve 4, A steady state switching valve 6 disposed between the electromagnetic on-off valve 5 and the logic valve 4 is provided.
[0046]
To explain a little, first, the electromagnetic on-off valve 5 is a directional switching valve in the illustrated embodiment, and during normal times, the spool 52 is maintained in a so-called reverse state by the biasing force of the spring 51 (noted) (illustrated). ).
[0047]
The electromagnetic on-off valve 5 prevents oil from flowing through the electromagnetic on-off valve 5 when in the shut-off position, while the solenoid 53 is excited by the input of a command signal from an external controller (not shown) and the spring 51 When the spool 52 moves forward against the urging force, a communication position (not shown) is set, and at this time, oil flow in the electromagnetic on-off valve 5 is allowed.
[0048]
Of course, the electromagnetic on-off valve 5 may be set to a normally open type instead of being set to a normally closed type as in this embodiment, and the direction Instead of the switching valve, another structure may be used.
[0049]
Next, the steady state switching valve 6 is a directional switching valve in this embodiment, and the electromagnetic on-off valve 5 is a so-called electromagnetic valve. When the spool 62 is slid by an external force operation such as the above, it is set to switch to one of the illustrated communication positions (not shown) or the other communication position (not shown). .
[0050]
That is, when the spool 62 is in the retracted state by the urging force of the urging spring 63 by manual operation to the operation portion 61, one communication position (not shown) shown in FIG. On the other hand, when the spool 62 moves forward against the urging force of the urging spring 63 by manual operation to the operation portion 61, it switches to the other communication position (not shown), not shown, Also at this time, the flow of oil in the steady state switching valve 6 is set to be allowed.
[0051]
Incidentally, in the illustrated case, the operation portion 61 is assumed to maintain the advance / retreat state of the operation rod 61a moving forward / backward toward the spool 62 by the screwing of the lock nut 61b, but as long as a predetermined stroke in the spool 62 can be secured. Of course, any configuration can be adopted instead.
[0052]
Further, in the steady state switching valve 6, the state of the operation unit 61, that is, whether the steady state switching valve 6 is in one communication position or the other communication position is input to the controller (not shown). It is going to be done.
[0053]
Therefore, in the control means described above, the steady state switching valve 6 includes, for example, the logic valve 4 side by an external force operation by manual operation, and the normally closed electromagnetic on-off valve 5 side that also constitutes the control means described above. When the electromagnetic on-off valve 5 is switched to a so-called communication position when the communication valve is in one communication position that allows the communication, the logic valve 4 can be opened and the telescopic body 4 can be expanded and contracted. Will be.
[0054]
In this vibration damping means, when the steady state switching valve 6 is in the one communication position, the so-called cutoff position where the normally open electromagnetic switching valve 5 is left as it is. Thus, the opening operation of the logic valve 4 can be prevented, and the telescopic body 2 is brought into a locked state.
[0055]
Further, when the steady state switching valve 6 is switched to another communication position that allows the communication between the logic valve 4 side and the electromagnetic on-off valve 5 side through a so-called other route by an external force operation such as a manual operation, Unless the electromagnetic on-off valve 5 set to the closed type is switched to the communication position, the logic valve 4 cannot be opened and the telescopic body 2 is locked.
[0056]
At this time, when the electromagnetic on-off valve 5 set to the normally closed type is switched to the communication position, the logic valve 4 is opened, and the telescopic body 2 can be expanded and contracted.
[0057]
Incidentally, when the electromagnetic on-off valve 5 is changed from the normally closed type to the normally open type, the control mode described above can be set in the reverse state, Will be able to select a control mode based on the actual situation of the building that will be different.
[0058]
Therefore, in the telescopic body 2 having the control means formed as described above together with the logic valve 4 and the check valves 31, 32, 33, 34, the electromagnetic on-off valve 5 in the control means is set to a normally closed type. Regardless of whether the electromagnetic open / close valve 5 is set or not, whether the electromagnetic on / off valve 5 is set or not is controlled depending on the control of the steady state switching valve 6 in the control means. Therefore, the brace 1 can be set to either an effective state or an ineffective state in which the brace 1 functions as a brace.
[0059]
Therefore, in the vibration damping device having this stretchable body 2, when all the braces 1 distributed in the wall space of the high-rise building that is a multi-story floor are in a state of functioning as braces, the high-rise building is Although the rigidity will be increased as a whole, if the brace 1 is selected as appropriate in a state where the brace 1 cannot function as a brace in a wall space that is a multi-story floor, a high-rise building is in a multi-story partial floor. While increasing the rigidity, it becomes possible to decrease the rigidity in another partial floor.
[0060]
As a result, for example, in a high-rise building including the case of a super high-rise building, it becomes a multi-story floor based on the result of determining how the high-rise building shakes due to earthquakes and winds in advance simulation. By setting the expansion and contraction body 2 so that each brace 1 in the wall space can be selected as appropriate and not capable of functioning as a brace, the entire high-rise building can be undulated in the event of an earthquake. The high-rise building is not affected by the earthquake, that is, the high-rise building can be prevented from collapsing due to the earthquake.
[0061]
As described above, the case where a high-rise building is not affected by an earthquake has been described as an example. However, as described in the introduction, a case where a high-rise building is not affected by a wind is also described. Of course, it can be utilized, and the effect in that case is not different.
[0062]
【The invention's effect】
As described above, in this invention, the effectiveness of the brace is reduced by selecting the stretchable body connected to the brace for improving the earthquake resistance in the building in either the stretchable state or the non-stretchable state. When the selection is made, the logic valve for controlling the expansion and contraction of the expansion / contraction body is controlled by a control means having an electromagnetic switching valve and a steady state switching valve. By selecting variously, it is possible to select either the effective state where the brace functions as a brace or the ineffective state where the brace does not function as a brace according to various situations, and the walls of a high-rise building which becomes a multi-story floor In all braces distributed in the space, this is selected as appropriate for the effective state and the ineffective state so that the high-rise building is rigid on the multi-story partial floors. While high, it is possible to lower the rigidity in another part floor.
[0063]
Therefore, for example, in a high-rise building including the case of a super high-rise building, it becomes a multi-story floor based on the result of determining how the high-rise building shakes due to earthquakes and winds in advance simulation. By setting the telescopic body so that each brace in the wall space can be properly selected as a state that functions as a brace or not, so that the entire high-rise building undulates in the event of an earthquake. As a result, the high-rise building is not affected by the earthquake, that is, the high-rise building is prevented from collapsing due to the earthquake.
[0064]
In the present invention, since the electromagnetic on-off valve and the steady state switching valve constituting the control means are each composed of a directional switching valve, the present invention does not incur an unnecessarily high cost and is inexpensive. A damping device can be provided.
[0065]
As a result, according to the present invention, high-rise buildings are not affected by earthquakes and winds on each floor, so that they are not affected by earthquakes and winds as a whole, and are inexpensive and versatile. There is an advantage that can be expected to be improved, and in particular, it is optimal to equip high-rise buildings.
[Brief description of the drawings]
FIG. 1 is a front view showing in principle a vibration damping device according to an embodiment of the present invention;
FIG. 2 is a diagram showing in principle the circuit of the vibration damping device shown in FIG. 1;
FIG. 3 is a cross-sectional view showing the vibration damping means shown in FIG.
FIG. 4 is a view showing a vibration damping device as a conventional example in the same manner as FIG.
5 is a view showing a stretchable body as a conventional example in FIG. 4 similarly to FIG.
[Explanation of symbols]
1 brace
2 Elastic body
4 Logic valve
5 Electromagnetic on-off valve constituting control means
6 Steady state switching valve constituting control means
11,12 Brace member
21 Cylinder body
22 Rod body
23 piston
24, 25 Relief valve
31, 32, 33, 34 Check valve
35, 36 Damping valve
41 Poppet
42, 51, 63 Spring
52, 62 spool
53 Solenoid
61 Operation unit
B ground
B1, B2 Horizontal material
P1, P2 pillar
R1, R2 Oil chamber

Claims (1)

Expansion and contraction that is distributed in a wall space formed by pillars distributed on the left and right and horizontal members such as beams distributed between the left and right pillars to improve the earthquake resistance of the building In a vibration damping device that has a body and is set so that the brace can be in an effective state by making the elastic body in an inextensible state or in an inflatable state, the brace can be in an ineffective state. Pistons connected to a rod body that is inserted into a cylinder body so that the body can be slidably accommodated in the cylinder body constituting the expansion body and the body is arranged in the wall space of the multilayer floor. The two oil chambers partitioned by the cylinder body can be communicated with each other via an oil passage disposed outside the cylinder body and a logic valve disposed in the oil passage and operating to be opened. The control means for enabling the opening operation of the Zick valve has an electromagnetic on-off valve disposed behind the logic valve, and a steady-state switching valve disposed between the electromagnetic on-off valve and the logic valve. It is set to be able to make the brace effective or ineffective by making the expansion / contraction body expandable or non-extensible by the selected switching operation for the steady state switching valve and the electromagnetic on-off valve. Characteristic damping device

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