JP2002333318A - Maximum displacement recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cheap device for recording maximum relative displacement between two facing objects. SOLUTION: For recording the maximum relative displacement between a foundation 100 and a slab 110, first to fourth recording tags 31 to 34 are arranged, respectively, so as to be movable to an X-direction measurement part 22 and a Y-direction measurement part 23 of a frame 2 provided to the foundation 100 with a specific frictional force. For moving the first to fourth recording tags 31 to 34 according to the relative displacement in the specific direction caused between the foundation 100 and the slab 110, an operation member 4 is provided to the slab 110.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maximum displacement recording device for measuring and recording a maximum value of a relative displacement generated between two objects in a building.

[0002]

2. Description of the Related Art For example, information on the degree of performance degradation of a base-isolated device installed in a base-isolated building or information on the magnitude of shaking of a base-isolated floor during an earthquake is acquired. There is a demand that the maximum value of the relative displacement of horizontal movement between two structures caused by an earthquake or the like be measured and recorded in order to estimate what kind of influence has been exerted on the two structures.

In order to respond to such a demand, conventionally, a sensor for detecting an earthquake and a trigger device are provided, and when a shake is detected by the sensor, a scanner scans the shake, and a displacement meter uses the scanned shake as a displacement amount. Devices have been developed that are configured so that they are read and converted into data, and the converted data is recorded in a storage device, and each component is operated by a power supply supplied via a cable.

[0004]

According to the conventional apparatus constructed as described above, the amount of horizontal displacement of the base-isolated structure during an earthquake can be measured and recorded with high accuracy, but the apparatus is very expensive. In addition, in order to maintain a high-precision measurement system at all times in preparation for a large earthquake that occurs every several decades to hundreds of years, calibration to identify the zero point which is the initial position of the measurement point, Since it is necessary to prepare a backup of the power supply, check the free space of the storage device for recording data, and perform regular maintenance of the device, there is a problem that the running cost is increased.

[0005] Due to the above-mentioned cost, seismically isolated buildings and seismic control buildings without this type of equipment are increasing, and as a result, a large earthquake occurs and these buildings are damaged. However, it is not possible to measure and record shaking data of each part of the structure, and it is not possible to design using experience when trying to provide better seismic isolated buildings and seismic control buildings to the next generation There is another problem.

An object of the present invention is to provide a maximum displacement recording device which can solve the above-mentioned problems in the prior art.

[0007]

According to the present invention, there is provided, in accordance with the present invention, an apparatus for recording a relative maximum displacement between two opposing objects, the apparatus comprising: A frame provided on one side, a displacement recording member attached to the frame so as to be movable with a predetermined frictional force along a predetermined direction of the frame, and a frame in the predetermined direction generated between the two objects. A maximum displacement recording device is proposed, comprising: an operation member provided on the other of the two objects so as to displace the displacement recording member from a predetermined position in accordance with the relative displacement.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a maximum displacement recording apparatus according to the present invention. The maximum displacement recording device 1 is provided with a seismic isolation device 120 between a foundation 100, which is a lower structure, and a column 111, which is integrated with a slab 110 to form an upper structure. In the base-isolated building 130 constructed so as to be able to reduce the sway of the columns 110 and the columns 111, the relative horizontal displacement generated between the foundation 100 and the slab 110 can be recorded and measured. It is installed in.
In addition, in the embodiment of FIG.
The rising portion 101 is provided on the
It is installed between 1 and the pillar 111.

The maximum displacement recording device 1 includes a frame 2 fixed to a foundation 100, the frame 2 includes an L-shaped frame main body 21, and the frame main body 21 includes an X-direction measuring unit 22.
And a Y-direction measuring unit 23 which is at a right angle thereto. The X-direction measuring unit 22 and the Y-direction measuring unit 23 are each made of round steel with a graduated scale.
The frame body 21 is made up of three legs 24, 25, and 26 so that the axial directions of the 2 and Y direction measuring units 23 are in the X direction and the Y direction, respectively, and are horizontal.
It is firmly fixed to 30 foundations 100.

In order to record the maximum displacement of the relative horizontal movement between the foundation 100 as the lower structure and the slab 110 as the upper structure as will be described later, the frame main body 21 has a recording frame as a displacement recording member. Is provided. In the present embodiment, the first recording frame 31 is
And a second recording frame 32, and a third recording frame 33 and a fourth recording frame 34 are disposed in the Y-direction measuring section 23.

The first recording frame 31 is formed in a columnar shape having a through hole 31a through which the frame body 21 is inserted at the center, and has an appropriate rigidity. Other second
Similarly, the fourth to third recording frames 32 to 34 are also cylindrical and have through holes 32a to 34a formed in the center. The first to fourth recording frames 31 are inserted by inserting the frame body 21 into the through holes 31a to 34a of the first to fourth recording frames 31 to 34.
To 34 are provided in the frame main body 21. here,
The inner peripheral surfaces of the through holes 31a to 34a and the outer peripheral surface of the frame body 21 are frictionally engaged, and the first to fourth recording frames 3
Reference numerals 1 to 34 are configured to slide the frame main body 21 with a predetermined frictional force. Therefore, the first and second recording frames 31 and 32 can move on the outer peripheral surface of the X-direction measuring unit 22 along the X direction with a predetermined frictional force, and can maintain the positions after the movement. I have. On the other hand, the third and fourth recording frames 33 and 34 move along the Y direction on the outer peripheral surface of the Y-direction measuring section 23 with a predetermined frictional force, and can maintain the position after the movement. Has become.

The frames 2 constituting the X-direction measuring unit 22 and the Y-direction measuring unit 23 are not limited to round steel, but may be steel plates or square steel having an appropriate width. What is necessary is just to be able to be slid frictionally as described above with the attached 31-34. Similarly, the legs 24, 25, and 26 are not limited to round steel, but may be any steel plate, square steel, angle, or the like that can firmly support the frame 2.

When the slab 110 moves horizontally relative to the foundation 100 during an earthquake or the like, the slab 110 and the foundation 1
The relative maximum displacements in the X and Y directions between 00 and
The operation member 4 is attached to the slab 110 for recording by displacing the fourth recording frames 31 to 34 accordingly.

The operating member 4 includes an operating member main body 41 made of round steel in an L-shape, similarly to the frame 2, and the operating member main body 41 includes an X-direction operating portion 42 and a Y-direction An operation unit 43 is provided. Operation member body 41
Is firmly fixed to the slab 110 by three legs 44, 45, 46 so as to be parallel to the slab 110 at a predetermined interval. Here, the axial direction of the X-direction operation unit 42 is perpendicular to the axial direction of the X-direction measurement unit 22 of the frame 2, and the first and second X-direction operation units 42 are disposed on the X-direction measurement unit 22. It is arranged at a position close to the X-direction measuring unit 22 so as to be sandwiched between the two recording frames 31 and 32. The axial direction of the Y-direction operation unit 43 is the frame 2
And the Y direction operation unit 43 is perpendicular to the axial direction of the Y direction measurement unit 23, and the Y direction operation unit 43 is measured in the Y direction so as to be sandwiched by the third and fourth recording frames 33 and 34 provided in the Y direction measurement unit 23. It is arranged at a position close to the part 23.

Since the maximum displacement recording device 1 is configured as described above, the first recording frame 31 and the second recording frame 32 disposed in the X-direction measuring section 22 of the frame 2 are connected to the X-direction of the operating member 4. The third recording frame 33 and the fourth recording frame 34 attached to the Y-direction measuring unit 23 are brought into contact with the Y-direction operating unit 43 of the operating member 4, respectively. If the scales of the initial positions of the recording frames 31 to 34 are recorded, when a relative displacement occurs between the foundation 100 and the slab 110 due to an earthquake or the like, the first and second recording frames 31 and 32 are set to X. Direction control unit 4
By means of 2, it is moved along the frame body 21 by a distance corresponding to the X-direction displacement of the relative displacement. here,
Since the first and second recording frames 31 and 32 are frictionally engaged with the X-direction measuring unit 22, the first and second recording frames 31 and 32 are temporarily moved from the initial position to a position corresponding to the value of the amount of displacement in the X direction generated at that time. Once moved, it remains there. Therefore, the administrator sets the first and second record frames 31, 32
By reading the movement amount from the above initial position from the scale engraved on the frame main body, the maximum relative displacement amount in the X direction generated up to that time can be easily known.

On the other hand, the third and fourth recording frames 33 and 34 are moved along the frame body 21 by a distance corresponding to the Y-direction displacement of the relative displacement by the Y-direction operating section 43. Here, since the third and fourth recording frames 33 and 34 are frictionally engaged with the Y-direction measuring section 23, the positions corresponding to the values of the amount of displacement in the Y direction generated from the initial position at that time. Once moved to, it remains held there. Therefore, if the administrator reads the movement amounts of the third and fourth recording frames 33 and 34 from the above initial positions from the scale engraved on the frame body, the administrator can easily determine the maximum relative displacement amount in the Y direction that has occurred up to that time. You can know.

Next, another embodiment of the present invention will be described with reference to FIG. The maximum displacement recording device 1A shown in FIG. 2 records and measures the relative displacement between the foundation 100 and the slab 110 generated in the base-isolated building 130 at the time of an earthquake or the like, similarly to the case shown in FIG. belongs to. Therefore, the components constituting the seismic isolation building 130 are denoted by the same reference numerals as in FIG. 1 and their description is omitted.

The maximum displacement recording apparatus 1A includes a frame 2A, the frame 2A includes an L-shaped frame main body 21A, and the frame main body 21A includes an X-direction measuring unit 22A and a Y-direction measuring unit 23A that is perpendicular to the X-direction measuring unit 22A. I have. X
Each of the direction measuring unit 22A and the Y direction measuring unit 23A is made of round steel with a scale, and
The frame main body 21A is formed by three legs 24A, 25A, and 26A to form the foundation of the base-isolated building 130 so that the axial directions of the A and Y direction measuring units 23A are along the X direction and the Y direction, respectively, and are horizontal. 100 firmly fixed.

In order to record the maximum displacement of the relative horizontal movement between the base 100 as the lower structure and the slab 110 as the upper structure as described later, a recording frame as a displacement recording member is provided on the frame body 21A. Is provided. In the present embodiment, a first recording frame 31 and a second recording frame 32 are provided in the X-direction measuring section 22A, and the Y-direction measuring section 2
3A, a third recording frame 33 and a fourth recording frame 34 are provided.

The first to fourth recording frames 31 to 34 in the present embodiment have the same configuration as that shown in FIG. In the case of the embodiment shown in FIG. 2, the frame main body 21 is inserted into the through holes 31a to 34a of the first to fourth recording frames 31 to 34.
By inserting A, the first to fourth recording frames 31 to
34 are provided on the frame main body 21A. here,
The inner peripheral surfaces of the through holes 31a to 34a and the outer peripheral surface of the frame body 21A are frictionally engaged as in the case of FIG. 1, and the first to fourth recording frames 31 to 34 have a predetermined friction. The frame body 21A is slid with force.
Therefore, the first and second recording frames 31 and 32 can move on the outer peripheral surface of the X-direction measuring unit 22A along the X direction with a predetermined frictional force, and can maintain the positions after the movement. I have. On the other hand, the third and fourth record frames 3
The reference numerals 3 and 34 are adapted to move on the outer peripheral surface of the Y-direction measuring unit 23A along the Y-direction with a predetermined frictional force, and to maintain the position after the movement.

When the slab 110 moves horizontally relative to the foundation 100 during an earthquake or the like, the slab 110 and the foundation 1
The relative maximum displacements in the X and Y directions between 00 and
An operation member 4A is attached to the slab 110 for performing recording by displacing the fourth recording frames 31 to 34 accordingly.

The operating member 4A includes an operating member main body 41A made of round steel in an L-shape, similarly to the frame 2A.
The operation member main body 41A has an X-direction operation unit 42A and a Y-direction operation unit 43A perpendicular to the X-direction operation unit. The operation member main body 41A is firmly fixed to the slab 110 by three legs 44A, 45A, 46A so as to be parallel to the slab 110 at a predetermined interval. The X-direction operation unit 42A faces the X-direction measurement unit 22A of the frame 2A installed on the foundation 100 in parallel, and the Y-direction operation unit 43
A is parallel to and opposed to the Y-direction operation unit 23A of the frame 2A. Therefore, the X-direction operation unit 42A and the Y-direction operation unit 43A are along the X direction and the Y direction, respectively.

The X-direction operation section 42A and the Y-direction operation section 43A of the operation member 4A are provided with X-direction and Y-direction operation bars 42A1 and 43A1, respectively, which are formed of a steel plate and formed in an elongated rectangular parallelepiped shape. The upper end of the X-direction operation bar 42A1 is pin-joined to the X-direction operation portion 42A at the connection portion 42A2. A slit 42A3 is formed at the lower end of the X-direction operation bar 42A1, and the X-direction measuring unit 22A of the frame 2A is engaged in the slit 42A3. Therefore, the X-direction operation bar 42A1 can rotate in the circumferential direction of the X-direction operation unit 42A without moving on the X-direction operation unit 42A along its axial direction. And can work with the superstructure without damage. The width of the X-direction operation bar 42A1 is set to the first and second recording frames 3A and 3B.
The X-direction operation bar 42 is sufficiently smaller than the diameter of
When A1 moves along the X direction, the first and second recording frames 31, 32 are displaced by the X direction operation bar 42A1 by an amount according to the amount of movement.

On the other hand, the upper end of the Y-direction operation bar 43A1 is pin-connected to the Y-direction operation portion 43A at the connection portion 43A2. A slit 43A3 is formed at the lower end of the Y-direction operation bar 43A1, and the Y-direction measuring unit 23A of the frame 2A is engaged in the slit 43A3. Therefore, the Y-direction operation bar 43A1 is
3A can rotate in the circumferential direction of the Y-direction operation unit 43A without moving along the axial direction thereof, and operates together with the upper structure without damaging the Y-direction operation unit 43A. can do. The width of the Y-direction operation bar 43A1 is sufficiently smaller than the diameters of the third and fourth recording frames 33 and 34. When the Y-direction operation bar 43A1 moves along the Y direction, the third and fourth recording frames are moved. 33,
34 is displaced by the Y-direction operation bar 43A1 by an amount according to the amount of movement.

Since the maximum displacement recording device 1A is configured as described above, the first recording frame 31 and the second recording frame 32 provided in the X-direction measuring section 22A of the frame 2A are connected to the X-frame.
The third and fourth recording frames 33 and 34 provided in the Y-direction measuring section 23A are brought into contact with the Y-direction operation bar 43A1, respectively. If the scales of the initial positions of .about.34 are recorded, when a relative displacement occurs between the foundation 100 and the slab 110 due to the occurrence of an earthquake or the like, the first and second recording frames 31, 32 are operated in the X-direction operation bar. By 42A1, it is moved along the frame main body 21A by a distance corresponding to the X-direction displacement of the relative displacement. Here, since the first and second recording frames 31 and 32 are frictionally engaged with the X-direction measuring unit 22A, the first and second recording frames 31 and 32 correspond to the value of the amount of displacement in the X direction generated at that time from the initial position. Once moved to the position, it remains held there. Therefore, the administrator can read the amount of movement of the first and second recording frames 31 and 32 from the initial position from the scale engraved on the X-direction measuring unit 22A, and find the maximum relative displacement in the X direction that has occurred up to that time. You can easily know the quantity.

On the other hand, the third and fourth recording frames 33 and 34 are moved along the frame main body 21A by the Y-direction operation bar 43A1 by a distance corresponding to the Y-direction displacement of the relative displacement. Here, the third and fourth recording frames 33, 3
4 is frictionally engaged with the Y-direction measuring section 23A, so that once it is moved from the initial position to a position corresponding to the value of the amount of displacement in the Y-direction generated at that time,
It remains there. Therefore, the administrator
By reading the amount of movement of the third and fourth recording frames 33 and 34 from the initial position from the scale engraved on the Y-direction measuring unit 23A, it is easy to know the maximum relative displacement in the Y-direction that has occurred up to that time. Can be.

Next, another embodiment of the present invention will be described with reference to FIG. The maximum displacement recording device 1B shown in FIG. 3 is the same as the maximum displacement recording device 1A shown in FIG.
The Y-direction operation bars 42A1 and 43A1 are supported by the support members 42B.
1, 43B1 is used to attach to the pillar 111. 3 that are the same as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted.

In the maximum displacement recording device 1B, the upper end of the X-direction operation bar 42A1 is attached to the lower end of the support member 42B1 whose upper end is fixed to the column 111 by pin joining at the joining portion 42B2. Therefore, the X-direction operation bar 42A1 can rotate in the circumferential direction of the pin of the joint 42B2, and the support member 42B1
It can work with the superstructure without damaging it. On the other hand, the Y-direction operation bar 43A1 also
As in the case of the direction control bar 42A1, the upper end is the column 11
The upper end of the Y-direction operation bar 43A1 is attached to the lower end of the support member 43B1 fixed to 1 at the joint 43B2 by pin joining. Therefore, the Y-direction operation bar 43A1 can rotate in the circumferential direction of the pin of the joint portion 43B2, and can operate together with the upper structure without damaging the support member 43B1. ing.

According to the present embodiment, the X-direction operation unit 43A and the Y-direction operation unit 43A are the supporting members 42B1 and 43B1, as compared with the embodiment of FIG.
This has the advantage that the configuration can be simplified.

Since the maximum displacement recording device 1B is configured as described above, the first recording frame 31 and the second recording frame 32 provided in the X-direction measuring section 22A of the frame 2A are connected to the X-frame.
The third and fourth recording frames 33 and 34 provided in the Y-direction measuring section 23A are brought into contact with the Y-direction operation bar 43A1, respectively. Record the scale of the initial position of ~ 34. Slab 1 and foundation 100 due to earthquake
When a relative displacement occurs between the first and second recording frames 31, 32, the first and second recording frames 31, 32 are moved by the X-direction operation bar 42A1 by a distance corresponding to the X-direction displacement of the relative displacement.
It is moved along 2A.

Here, the first and second recording frames 31, 32
Is frictionally engaged with the X-direction measuring unit 22A,
Once it is moved from the initial position to a position corresponding to the value of the amount of displacement in the X direction generated at that time, it is kept held there. Therefore, the administrator
If the amount of movement of the second recording frames 31 and 32 from the initial position is read from the scale engraved on the X-direction measuring unit 22A, the maximum relative displacement in the X direction generated up to that time can be easily known. .

On the other hand, the third and fourth recording frames 33 and 34 are moved by the Y-direction operation bar 43A1 along the Y-direction measuring section 23A by a distance corresponding to the Y-direction displacement of the relative displacement. Here, the third and fourth recording frames 33, 3
4 is frictionally engaged with the Y-direction measuring section 23A, so that once it is moved from the initial position to a position corresponding to the value of the amount of displacement in the Y-direction generated at that time,
It remains there. Therefore, the administrator
By reading the amount of movement of the third and fourth recording frames 33 and 34 from the initial position from the scale engraved on the Y-direction measuring unit 23A, it is easy to know the maximum relative displacement in the Y-direction that has occurred up to that time. Can be.

In the above embodiment, the base-isolated building 13
Although the case of recording the maximum value of the relative displacement generated between the zero base 100 and the slab 110 has been described, the application of the maximum displacement recording device according to the present invention is not limited to this. For example, the present invention can be similarly applied to a case where a maximum value of a relative displacement of a vibration control device with respect to a floor on which a vibration control device is installed in a vibration control device such as a tuned mass damper (TMD) is recorded.

[0035]

According to the present invention, as described above, in a device for recording a relative maximum displacement between two opposing objects, a frame provided on one of the two objects is provided along a predetermined direction. A displacement recording member is disposed so as to be movable with a predetermined frictional force, and the other of the two objects is operated to displace the displacement recording member in accordance with a relative displacement in a predetermined direction generated between the two objects. Since the components are provided, the equipment can be manufactured at low cost, calibration to identify the zero point which is the initial position of the measurement point, preparation of power supply backup in case of power failure, data recording Since it is not necessary to check the free space of the storage device for performing the above and to perform a regular inspection of the device, the running cost can be suppressed.

In addition, it is possible to expect an increase in the installation of the equipment in the base-isolated building or the seismic control building because the cost is reduced and the burden of installing the equipment is reduced. In the event of damage to a building, we can measure and record data on the shaking of various parts of the object, making use of our experience when trying to provide better seismic isolation and vibration control buildings for the next generation. Can design.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of a maximum displacement recording device according to the present invention.

FIG. 2 is a perspective view showing another embodiment of the maximum displacement recording device according to the present invention.

FIG. 3 is a perspective view showing another embodiment of the maximum displacement recording device according to the present invention.

[Explanation of symbols]

 1, 1A, 1B Maximum displacement recording device 2, 2A Frame 4, 4A Operation member 21, 21A Frame main body 22, 22A X-direction measuring unit 23, 23A Y-direction measuring unit 24-26, 24A-26A Leg 31 First recording Frame 32 Second recording frame 33 Third recording frame 34 Fourth recording frame 41, 41A Operation member main body 42, 42A X direction operation section 42A1 X direction operation bar 43, 43A Y direction operation section 43A1 Y direction operation bar 44 to 46, 44A to 46A Legs 100 Foundation 110 Slab 111 Column 120 Seismic isolation device 130 Seismic isolation building

Claims (1)

[Claims] An apparatus for recording a relative maximum displacement between two opposing objects, comprising: a frame provided on one of the two objects; and a predetermined direction along a predetermined direction of the frame. A displacement recording member attached to the frame such that the displacement recording member can move with a frictional force; and 2) displacing the displacement recording member from a predetermined position in accordance with a relative displacement in the predetermined direction generated between the two objects. A maximum displacement recording device comprising: an operation member provided on the other of the two objects.