JP2001040903A - Improvement of base-isolation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base-isolation structure such that movement of the structure due to wind pressure or residual displacement caused by unequal settling of the ground can be effectively suppressed and a base-isolation state can surely be achieved during earthquakes. SOLUTION: For this base-isolation structure, a base isolation device consisting of a linear support device which supports a structure movably on a foundation 12 and a movement inhibiting device 26 adapted to selectively acting and releasing an inhibiting function for inhibiting the relative movement of the structure 14 to the foundation 12 are provided between the foundation 12 and the structure 14. In high winds, the movement inhibiting device 26 is operated to perform its inhibiting function to fix the base-isolation structure completely to the foundation 12 to deter the movement of the base-isolation structure and to hold the linear support device in a fixed state in which it cannot perform its base-isolation function, while under normal conditions the inhibiting function of the movement inhibiting device is canceled so that the base-isolation structure is not fixed to the foundation 12 and the linear support device exercises a base-isolation state in which it can perform its base-isolation function. The movement inhibiting device 26 comprises a cylinder device having either a selector valve or a drive part for selectively operating or canceling the inhibiting function.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation structure in which a structure is movably supported on a foundation by a linear motion support device, and more particularly to a seismic isolation structure provided with a device for suppressing the movement.

[0002]

2. Description of the Related Art In general, a supporting device for a seismic isolation structure is usually composed of a laminated rubber or a friction slide. However, such support devices require a relatively high hardness for supporting heavy structures. For this reason, the natural period of the structure cannot be set to a sufficiently long period required for seismic isolation, and the desired seismic isolation effect has not been achieved.

Therefore, a linear motion supporting device has been proposed as a seismic isolation means in place of the laminated rubber or the like (Japanese Patent Laid-Open No. Hei 8-24).
0033).

[0004] That is, in FIGS. 7 and 8, a linear motion supporting device 10 includes rolling rails 16, 18 fixed to a foundation 12 and a structure 14, respectively, via spherical or cylindrical rolling elements 20. The blocks 22 and 24 are rotatably connected to the blocks 22 and 24 and are orthogonal to each other.
4 are combined. Such a linear motion supporting device 10
, The mutual movement of the structure 14 with respect to the foundation 12 can be freely permitted with as low a frictional state as possible, so that the vibration transmission from the foundation 12 can be effectively shut off.

[0005]

As described above, since the seismic isolation structure supported by the linear motion support device is allowed to freely move relative to the foundation of the structure, it is particularly suitable for detached houses and the like. Small and lightweight structures may move due to strong wind pressure such as a typhoon, or may move due to residual displacement due to uneven settlement of the ground during a large earthquake or the like. Further, in general, a seismic isolation structure is a mechanism that releases a fixed portion so that the seismic isolation device operates only during an earthquake. Therefore, the seismic isolation device may not operate when necessary due to long-term deterioration of the fixed portion.
Further, in the above-mentioned conventional linear motion supporting seismic isolation structure, although a movement restoring device is used, no measures have been taken to prevent movement itself in advance.

Accordingly, an object of the present invention is to prevent the structure from moving due to wind pressure and to effectively prevent the structure from moving due to residual displacement due to uneven settlement of the ground, and to reliably prevent the structure from moving during an earthquake. It is to provide a seismic isolation structure that operates.

[0007]

According to the present invention, a seismic isolation device including a linear motion support device for movably supporting a structure with respect to a foundation, and a suppression function for suppressing relative movement of the structure with respect to the foundation. By providing a movement deterrent device that can be switched between operation and release between the foundation and the structure, in the case of strong winds, the deterrence function of this movement deterrent device is activated to completely move the seismic isolated structure from the foundation. The seismic isolation structure is fixed by restraining the seismic isolation structure from moving, and the linear motion support device is set to a fixed state in which the seismic isolation function cannot be performed. In a seismic isolation structure in which the linear motion supporting device is not fixed and the linear motion supporting device can exert its seismic isolation function, the movement restraining device includes a switching valve or a drive unit for switching between operation and release of the restraining function. Having cylinder Providing seismic isolation structure, characterized by comprising located et al.

[0008] The cylinder device having the drive unit is characterized in that it has relief means for releasing the movement inhibition when a force equal to or more than a predetermined value is applied.

The cylinder device is characterized in that it is automatically operated by a sensor and / or remotely operated.

The sensor comprises a wind speed sensor. When a wind speed exceeding a certain value is detected, the switching device or the drive unit is automatically operated to fix the cylinder device. The drive unit is automatically operated to bring the cylinder device into a seismic isolation state.

The sensor comprises a seismic sensor. When a certain acceleration is detected, the switching valve or the driving part is automatically operated to make the cylinder device act as a damping device for the base-isolated structure. When acceleration occurs, the switching valve or the drive unit is fixed.

The switching valve is characterized by comprising an electromagnetic switching valve.

[0013] The switching valve is characterized by comprising a manual switching valve.

The movement suppressing device is provided on one of the foundation and the structure, and has a pressing means for pressing the other side in a horizontal direction. It is characterized by a support system.

A movement restraining device using a horizontal support system is as follows.
It is characterized by comprising a swing lever pivotally attached to the bottom of the structure and a piston having a piston head connected to the swing lever and pressing a foundation.

A movement restraining device using a horizontal support system is as follows.
A projecting edge is projected from the foundation, a projecting edge is projected from the bottom surface of the structure, a pressure bladder is inserted between the projecting edge of the foundation and the projecting edge of the structure, and the pressure bladder is pressurized with a pressure fluid. It is characterized by being connected to a supply source.

A movement restraining device using a horizontal support method is as follows.
A cylinder is attached to the bottom of the structure, and the cylinder is urged to press the foundation with a cylinder head.

A movement restraining device using a horizontal support system is as follows.
A cylinder is attached to the bottom of the structure, the cylinder head of the cylinder is brought into contact with the opposing surface of the foundation, each cylinder chamber of the cylinder is connected by a flow path, and a pre-pressure is applied to the working fluid, A switching valve is connected halfway.

A linear roller bearing is interposed between the cylinder head and the foundation.

According to the seismic isolation structure of the present invention configured as described above, it is possible to effectively prevent the structure from moving due to movement of the structure by wind pressure or residual displacement due to uneven settlement of the ground. Yes, the seismic isolation function can be reliably activated during an earthquake.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a seismic isolation structure having a movement restraining device according to the present invention will now be described in detail based on embodiments with reference to the accompanying drawings. For convenience of description, the same components as those of the conventional structure shown in FIGS. 7 and 8 are denoted by the same reference numerals, and detailed description will be omitted.

First, in FIGS. 7 and 8, the seismic isolation structure movement suppressing device 26 according to the present invention is mounted so as to straddle between the structure 14 and the foundation 12. I understand. Although the movement suppressing device 26 is provided outside the structure in the drawing, it is needless to say that the movement suppressing device 26 can be provided inside.

FIGS. 1A to 1F show an example of the lock system as a specific embodiment of the movement suppressing device 26. FIG. As will be described later, the embodiments shown in FIGS. 1A to 1E are of a type that is directly operated manually.
On the other hand, the embodiment shown in FIG. 1 (f) is of a type which is indirectly operated via a pressurizing means such as a compressor. In the lock method, a structure is fixed to a foundation to be in a fixed state, and is released to be in a seismic isolation state.

That is, in the movement suppressing device 26 shown in FIG. 1A, the sand 28 is densely filled as a granular material in the chamber 28 formed in the foundation 12, and the locking arm 29 is moved from the base of the structure. A through-hole 31 for inserting the fixing pin 32 is formed in the locking arm 29 by extending the pin, and the pin 32 is forcibly inserted into the sand 30 through the through-hole 31 to form the structure 1.
4 is in a fixed state in which it is fixed to the foundation 12. Accordingly, the pin 32 functions as a wedge, and the linear motion support device operates under strong wind to prevent the structure 14 from moving, or to prevent the structure from moving due to residual displacement such as an earthquake. Pin 32
The seismic isolation state is released by pulling out the lock.

In this embodiment, an example is shown in which the chamber is filled with sand. However, the same effect can be obtained by filling small crushed stones.

Next, the movement suppressing device 26 shown in FIG.
This will be briefly described according to the embodiment shown in FIG.
The projecting arm 34 is made to protrude from the structure 14, and the projecting arm 34
A tapered hole 36 is formed across the base 12 and the tapered pin 40 is manually driven into the tapered hole 36, so that the structure 14 is fixed to the base 12. Further, by pulling out the taper pin 40, the seismic isolation state where the fixing is released is obtained. In this embodiment, the position correcting effect is achieved at the same time as the movement suppressing effect.

Also, the movement suppressing device 26 shown in FIG.
Secures the structure 14 to the foundation 12 by manually pivoting and mounting a lock rod 44 pivotally attached to the structure 14 to a locking arm 46 fixed on the foundation 12. And lock bar 44
When the arm is not mounted on the locking arm 46, a seismic isolation state is established.

Further, the movement suppressing device 2 shown in FIG.
6 is a pull-up member 50 inserted through a throttle 49 into a chamber 48 provided in the foundation 12 near the vertical wall surface 52.
Is manually pulled up so as to face the vertical wall surface 52 of the structure 14, and is fixed when pulled up. When the pulling member 50 is located in the chamber 48, the structure 14 is in the seismic isolation state.

The movement suppressing device 26 shown in FIG.
Is configured to manually drop the drop member 51 disposed opposite the vertical wall surface 52 of the structure 14 into the chamber 48 provided on the foundation 12 in close proximity to the vertical wall surface 52,
The falling member 51 is dropped to be in a fixed state, and is pulled up to be in a seismic isolation state. Then, the movement suppressing device 2 shown in FIG.
Reference numeral 6 denotes an inflatable bag 58 housed in locking holes 54, 56 formed in communication with the foundation 12 and the structure 14, and a check valve 59 for checking fluid pressure from a pressurizing means such as a compressor 60 therein. That is, the structure 14 is fixed to the foundation 12 by being expanded by the pressurizing means, and the fluid pressure is released to be in the seismic isolation state.

Next, an embodiment of a tension mooring system of the movement suppressing device 26 according to the present invention will be described with reference to FIGS. 2 (a) to 2 (c). In these embodiments, basically, the structure 14 is moored to the foundation 12 with a required tension and is fixed, and the mooring is released to be in a seismic isolation state.

That is, in the movement restraining device 26 shown in FIG. 2A, mooring arms 61 and 62 are protruded from the foundation 12 and the structure 14, respectively, and these mooring arms 61 and 62 are provided.
The turnbuckle 63 is suspended during this time, and is tightened by manual operation to secure it in a tension-fixed state. The movement suppressing device 26 shown in FIG. 2B includes a wire assembly 64 mounted between the foundation 12 and the structure 14, and the wire assembly 64
Both ends are fixed to the foundation 12, and an intermediate part is a bearing 66.
And a drive unit 67 connected to the support unit 66 and attached to the structure 14, and
The driving unit 67 is driven to pull and tension the wire 65, thereby fixing the structure 14 to the foundation 12 and loosening the structure 14 to the seismic isolation state. Further, the movement suppressing device 26 shown in FIG. 2 (c) mounts the winding wire 68 between the foundation 12 and the structure 14, and drives the driving unit 70 fixed to the foundation 12 to move the winding wire 68. Rotationally tensioned, the structure 14
2 is configured to be in a fixed state and loosened to be in a seismic isolation state.

FIGS. 3A and 3B show an embodiment of a crimping type movement suppressing device 26. FIG. In this example, basically, the structure 14 is configured to be fixed to the foundation 12 by crimping with a required pressing force, and the crimping is released to be in a seismic isolation state.

That is, in the movement suppressing device 26 shown in FIG. 3A, crimping edges 71 and 72 are respectively extended between the foundation 12 and the structure 14, and these crimping edges 71 and 7 are provided.
2 are sandwiched by a crimping fitting 74 with a spacer 73 interposed therebetween, and the structure is pressed against the foundation 12 by tightening the screw 75 so that the structure 14 is fixed to the foundation 12 and the tightening is released to achieve the seismic isolation state. Further, in the movement suppression device 26 shown in FIG.
A screw hole 76 is formed in the structure 14, a crimping bolt 77 is screwed into the screw hole 76 so as to advance and retreat toward the foundation 12, and the bolt head is manually tightened to crimp the bolt head to the foundation 12. It is fixed and loosened to seismic isolation.

FIGS. 4A to 4C show an embodiment of a horizontal support system of the movement suppressing device 26 according to the present invention. Note that, in these embodiments, basically, the structure 14 is configured to suppress the movement of the structure 14 with respect to the foundation 12 with a required horizontal pressing force, and is pressed to be in a fixed state. It becomes a quake.

That is, in the movement suppressing device 26 shown in FIG. 4A, a swing lever 79 pivotally connected to the bottom of the structure 14 at a pivot point 78, and a piston connected to one end of the swing lever 79 When the swing lever 79 is swung clockwise, the piston 80 moves horizontally in the direction of the stopper 82 provided on the base 12 to move the piston head 84
However, the structure 14 is fixed to the foundation 12 by pressing the stopper 82. Then, when the swing lever 79 is swung counterclockwise, it is released and enters the seismic isolation state.

The movement suppressing device 26 shown in FIG.
Provides a pressure bladder 90 between a projecting edge 86 of the foundation 12 and a projecting edge 88 of the structure 14 and within which a pressure fluid supply 9 is provided.
The pressure bladder 90 is configured to be inflated and press-contacted by supplying a pressurized fluid from the second through a check valve 94. Pressure is applied to the pressure bladder 90 to be in a fixed state, and when the pressure is removed, it becomes a seismic isolation state. The compressed air may be supplied to the pressure bladder using a compressor as a pressure fluid supply source.

Further, the movement suppressing device 2 shown in FIG.
6, the cylinder unit 96 attached to the bottom surface of the structure 14 via the relief pins 97, 97 is urged by the driving unit 95 to press the cylinder head 98 against the restraining wall 100 of the foundation 12. The crimped state is fixed, and the crimped state is seismic isolation. Relief pin 9
7 and 97 are made of a low-yield metal such as lead or tin or a low-yield alloy containing these metals. When a large earthquake occurs while the movement suppressing device 26 is in a fixed state, the relief pins 97 and 97 are used.
Reference numeral 97 denotes a structure in which the movement restraint is released by breaking, and the state is instantaneously set to the seismic isolation state. As described above, since the relief pin is broken, the cylinder device 96 is not broken, and the repair can be performed by simply replacing the relief pin when repairing the movement suppressing device 26. In addition to the above-described example, a resin pin, a silicate compound such as glass, or the like may be used as the relief pin, as long as the pin is broken when a force greater than a predetermined value is applied during a large earthquake. The predetermined value here is set according to the scale, structure, etc. of the structure,
A large value is set for a building or the like, and a small value is set for a wooden structure or the like. In addition to the above-described relief pin, a relief bolt, a relief plug, or the like can be used as the relief means.

Next, the movement suppressing device 26 shown in FIG.
Is a pair of cylinder devices 108, 109 on the bottom of the structure.
To the cylinder head 11 of these cylinder devices.
0 and 111 are opposed to the rising portions 112 and 1 of the foundation 12.
13 are in contact with each other via linear roller bearings 114 and 115. Then, the cylinder chambers are connected to each other by the electromagnetic switching valve 1
16 are connected by a pipe 117 as a flow path connecting the
Hydraulic oil with a preload of 1-2 kg / cm2 is injected into the cylinder chamber and pipe. Linear roller bearing 1
With the interposition of the cylinders 14 and 115, the cylinders 108 and 109 can be prevented from being broken when a pressure is applied in a direction perpendicular to the axial direction of the cylinder.

In this embodiment, normally, the electromagnetic switching valve 116 is kept in the open seismic isolation state, and the cylinder head presses the base 12 by the preload of the hydraulic oil. In this case, if an earthquake occurs, the hydraulic oil can flow freely, so that the seismic isolation function works and the oil functions as a damping device due to the viscous resistance of the hydraulic oil. When the electromagnetic switching valve 116 is closed in a strong wind, the flow of hydraulic oil is shut off, so that the cylinder heads 110 and 111 of the cylinder devices 108 and 109 maintain a fixed state in which the base 12 is pressed, and the movement suppressing device. Function as The electromagnetic switching valve may be changed to a manual switching valve.

The movement suppressing device 26 shown in FIG. 5 (b) shows an example in which the piston rods extend in both directions of the cylinder 118 to press the cylinder heads 110 and 111 against the base 12, and other reference numerals are used in the drawings. 5, the description is omitted. In this example, only one cylinder is required, which has the effect of simplifying the configuration.

As described above, according to the seismic isolation structure of the present invention, the movement restraining device is capable of controlling the wind speed, the wind load or the maximum displacement of the structure due to the wind speed, or the residual displacement due to the uneven settlement of the ground after the earthquake. The movement of the structure can be suppressed due to the unstable condition of. In addition, since the structure is always in the seismic isolation state supported by the linear motion support device with respect to the foundation, it is possible to reliably prevent the structure from being seriously damaged by the earthquake. Further, since the structure is fixed by the movement suppressing device in the unstable condition, it is possible to prevent the structure from moving due to wind pressure or the like and accidental disaster caused by the movement.

Although the above embodiment has been described with reference to a manual system, the movement suppressing device of the present invention may be configured to be operated automatically and / or remotely by a sensor.

That is, FIG. 6A is the same as FIG.
The embodiment according to (a) is changed from a manual method to a structure in which automatic operation and / or remote operation by a sensor is performed, and mechanical driving is performed on a pin 32 driven into sand 30 of a chamber 28. Means 102 are provided;
The driving means 102 includes an automatic operation and / or
Alternatively, a sensor 106 such as a wind speed sensor or an earthquake sensor is connected via a remote control circuit 104. Therefore, according to this configuration, for example, the wind speed is 45 m / s and the wind load is 1
0t, when an unstable condition occurs such that the maximum displacement of the structure due to the wind reaches 20 cm and the residual displacement after the earthquake reaches 3 cm, the pin 32 is automatically moved to the sand 3 through the driving means 102.
When the structure 14 is driven into the fixed state, the movement of the structure 14 due to wind pressure is suppressed, or the movement of the structure 14 due to residual displacement such as an earthquake is suppressed by automatic operation or remote operation.

FIG. 6B shows another embodiment of the automatic operation and / or the remote operation. In the figure, four cylinders 120, 122, 124 and 126 are mounted on the bottom of a structure (not shown) inside the foundation 12. Cylinders 120, 122 abut the opposing faces of foundation 12, and cylinders 124, 126 abut other opposing faces of foundation 12. The cylinders 120, 122, 124, 126 are connected to a hydraulic pump 128 by a pipe 130.
The hydraulic pump 128 is operated by a manual switch 132 and is operated by a wind speed sensor 134 when the wind speed exceeds a predetermined wind speed. Further, the hydraulic pump 128 is configured to be released when a predetermined earthquake level is exceeded by the earthquake sensor 136 and to be in a seismic isolation state.

In this embodiment, the hydraulic pump 12 is turned on by turning on the manual switch 132 in a strong wind, for example.
By operating 8, the structure can be fixed to the foundation 12 by the cylinder, or the structure can be made free from the foundation 12 by being turned off, that is, in a seismic isolation state. When the wind speed exceeds a predetermined value by the wind speed sensor 134, the hydraulic pump 128 is operated to fix the structure to the foundation 12, or when the wind stops, the hydraulic pump 128 is stopped and the structure is free from the foundation 12. That is, it can be in a seismic isolation state. Further, for example, if the structure is a foundation 1
When the seismic sensor 136 detects the initial tremor due to the P wave in the fixed state with respect to the base 2, the hydraulic pump is immediately stopped to bring the structure into a free state, that is, a seismic isolation state, with respect to the foundation 12. Damage can be minimized. In this embodiment, the cylinder can be used as a damping device. In addition, the earthquake sensor is not limited to the sensor that detects the P wave.

As described above, the seismic isolation structure of the present invention is usually
Since the structure is kept free from the foundation, that is, in a seismic isolation state, the seismic isolation function works reliably in the event of an earthquake, and damage to the structure can be prevented. In addition, in the case of strong wind, etc., since the structure is fixed to the foundation by the movement suppression device,
Damage due to movement of the structure can be prevented. Further, the power consumption can be reduced because the hydraulic pump is not operated except in the case of a strong wind or the like.

[0047]

As described above, the seismic isolation structure according to the present invention is configured such that a device for restraining the movement is provided for a structure movably supported via the linear motion support device. With this configuration, it is possible to effectively prevent movement of the structure due to wind pressure or the like and unexpected disaster caused thereby, that is, damage to the structure.

In addition, since the seismic isolation structure of the present invention usually keeps the structure free from the foundation, that is, in the seismic isolation state, the seismic isolation function works reliably in the event of an earthquake, and the structure is reliably damaged. And power consumption can be reduced.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of a lock-type movement suppressing device according to the present invention, wherein FIG.
Is an example of using a taper pin, (c) is an example of using a lock bar,
(D) is an explanatory view showing an example of using a pulling member, (e) is an explanatory view showing an example of using a falling member, and (f) is an explanatory view showing an example of using an inflatable bag.

FIGS. 2A and 2B show an embodiment of a tension mooring system of the movement restraining device according to the present invention, wherein FIG. 2A shows an example of use of a turnbuckle, FIG. 2B shows an example of use of wire assembly, and FIG. It is explanatory drawing which shows the use example of a taking wire, respectively.

FIG. 3 shows an embodiment of a crimping type movement suppressing device according to the present invention, wherein (a) shows an example of using a crimping fitting;
(B) is explanatory drawing which shows the usage example of a crimping bolt, respectively.

4A and 4B show an embodiment of a horizontal support type movement suppressing device according to the present invention, wherein FIG. 4A shows an example of use of a swing lever device, FIG. 4B shows an example of use of a pressure bag, and FIG. FIG. 4 is an explanatory view showing a usage example of a cylinder.

5A and 5B show another embodiment of the horizontal support type movement suppressing device according to the present invention, wherein FIG. 5A shows an example of using a pair of cylinders, and FIG. 5B shows an example of using one cylinder. FIG.

6A and 6B show an embodiment of an automatic operation and / or remote operation type movement suppression device according to the present invention, wherein FIG.
FIG. 4 is an explanatory view showing an example of use of a lock method, and FIG.

FIG. 7 is a perspective view showing a linear motion support device.

FIG. 8 is an overall side view showing a seismic isolation structure (detached house) using a linear motion support device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Linear support apparatus 12 Foundation 14 Structure 16,18 Rolling rail 20 Rolling element 22,24 Block body 26 Movement suppressing device 28 Chamber 29 Locking arm 30 Sand 32 Pin 34 Projection arm 36 Tapered hole 40 Taper pin 44 Lock rod 46 Locking arm 48 Chamber 49 Narrowing part 50 Pulling member 51 Dropping member 52 Vertical wall surface 54, 56 Locking hole 58 Inflatable bag 60 Pressurizing means 61, 62 Mooring arm 63 Turnbuckle 64 Wire assembly 66 Support part 67 Drive part 68 Winding Wire 70 Drive unit 71, 72 Crimp edge 73 Spacer 74 Crimp bracket 75 Screw 76 Screw hole 77 Crimp bolt 78 Pivot point 79 Swing lever 80 Piston 82 Stopper 84 Piston head 86, 88 Protrusion edge 90 Pressure bag 92 Pressure fluid supply source 94 Check valve 95 Actuator 96 Cylinder device 97 Relief pin 98 Cylinder head 100 Suppression wall 102 Driving means 104 Automatic operation and / or remote operation circuit 106 Sensor 108, 109, 118 Cylinder 110, 111 Cylinder head 112, 113 Start-up part 114, 115 Roller bearing 116 Switching valve 117 Channel 120, 122, 124, 126 Cylinder 128 Hydraulic pump 130 Piping 132 Manual switch 134 Wind speed sensor 136 Earthquake sensor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Eiji Kuroda, Inventor 13-13 Arakicho, Shinjuku-ku, Tokyo Sumitomo Construction Co., Ltd. (72) Inventor Masami Nomori 4-13 Arakicho, Shinjuku-ku, Tokyo Sumitomo Construction Co., Ltd. In company

Claims (7)

[Claims] A seismic isolation device comprising a linear motion support device for movably supporting a structure with respect to a foundation, and an operation and release of a restraining function for suppressing relative movement of the structure with respect to the foundation can be switched. By installing a movement restraint device between the foundation and the structure, in strong winds, the restraint function of this movement restraint device is activated to completely fix the seismic isolated structure to the foundation and move the seismic isolated structure. The seismic isolation structure is not fixed to the foundation and the linear motion support device is fixed by releasing the motion restraint device's deterrence function at the same time that the linear motion support device cannot perform its seismic isolation function. In the seismic isolation structure in a seismic isolation state capable of exhibiting the seismic isolation function, the movement restraining device comprises a cylinder device having a switching valve or a drive unit for switching operation and release of the restraining function. Exemption Structures. 2. The seismic isolation structure according to claim 1, wherein the cylinder device having the drive unit has relief means for releasing the movement suppression when a force equal to or more than a predetermined value is applied. 3. The seismic isolation structure according to claim 1, wherein the cylinder device is operated automatically and / or remotely by a sensor. 4. The sensor comprises a wind speed sensor. When a wind speed exceeding a certain level is detected, the switching valve or the drive unit is automatically operated to fix the cylinder device. The seismic isolation structure according to claim 3, wherein the cylinder device is set in a seismic isolation state by automatically operating a valve or a drive unit. 5. The sensor comprises a seismic sensor, and when a predetermined acceleration or more is detected, the switching device or the drive unit is automatically operated to cause the cylinder device to act as a damping device for the seismic isolation structure, and to be maintained within a predetermined time. The seismic isolation structure according to claim 3, wherein the switching valve or the drive unit is fixed when the following acceleration is obtained. 6. The seismic isolation structure according to claim 1, wherein the switching valve comprises an electromagnetic switching valve. 7. The seismic isolation structure according to claim 1, wherein the switching valve comprises a manual switching valve.