JP6790689B2 - Management system - Google Patents

Description

The present invention relates to a management system.

A method of diagnosing a structure such as a building is known.

For example, first, a plurality of acceleration sensors installed in advance on a plurality of floors of a building detect acceleration in the event of an earthquake. Next, in the building, the building diagnostic monitoring system receives and analyzes each detection data from a plurality of acceleration sensors. Then, the building diagnosis monitoring system records the analysis result. Subsequently, the building diagnosis monitoring system evaluates the damage to the building based on the seismic intensity of each floor and the diagnostic algorithm, and transmits the evaluation result. In this way, there is known a method capable of performing an early damage evaluation of a building on a local network and transmitting the damage evaluation without going through the Internet (for example, Patent Document 1 and the like).

Another method is to diagnose the structural performance of the structure using structural health monitoring technology and send the diagnosis result to the disaster prevention center. In this way, there is known a method of centrally managing the damage situation of a structure at a disaster prevention center or the like to ensure the safety of residents (for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2013-254239 Japanese Unexamined Patent Publication No. 2016-105115

However, conventionally, it has not been possible to properly indicate the priority of treatment of each structure.

One aspect of the present invention has been made in view of such problems, and an object of the present invention is to appropriately indicate the priority of treatment of each structure.

In order to solve the above-mentioned problems and achieve the object, the management of acquiring data based on the acceleration of each structure from the structural health monitoring system that detects the acceleration and diagnoses the structural performance of the structure in one embodiment of the present invention. the system,
A calculation means for calculating the priority of each structure based on the natural frequency of each structure calculated from the acceleration.
Look including a display means for displaying the priority of the treatment of each structure based on the priority,
At the time of a disaster, the output means outputs the priority of treatment of each structure based on the diagnosis result of the structural performance of each structure, and then outputs the priority of treatment of each structure based on the priority. Redo .

According to the present invention, the priority of treatment of each structure can be appropriately indicated.

It is a system diagram which shows an example of the whole structure of the system using the management system in one Embodiment of this invention. It is a figure which shows an example of the content notified by the structural health monitoring system in one Embodiment of this invention. It is a figure which shows an example of the natural frequency calculated by the management system in one Embodiment of this invention. It is a block diagram which shows an example of the hardware composition of the detection apparatus which the structural health monitoring system has in one Embodiment of this invention. It is a block diagram which shows an example of the hardware composition of the management system in one Embodiment of this invention. It is a figure which shows an example of the display using the map information by the management system in one Embodiment of this invention. It is a flowchart which shows an example of the processing by the management system in one Embodiment of this invention. It is a figure which shows the calculation example of the natural frequency by the management system in one Embodiment of this invention. It is a figure which shows an example of the display screen by the management system in one Embodiment of this invention. It is a functional block diagram which shows an example of the functional structure of the management system in one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1. 1. Overall configuration example of management system 2. Hardware configuration example of structural health monitoring system 3. Management system hardware configuration example 4. Example of overall processing by the management system 5. Management system function configuration example

≪ 1. Overall configuration example of management system ≫
The management system according to the embodiment of the present invention has an overall configuration including a structural health monitoring system and a management system. For example, the management system has the following overall configuration.

FIG. 1 is a system diagram showing an example of the overall configuration of a system using the management system according to the embodiment of the present invention. Hereinafter, a management system 20 as shown in the figure will be described as an example.

First, the structural health monitoring system 10 diagnoses a structure such as a building BU or a bridge. That is, the structural health monitoring system 10 performs so-called structural health monitoring, which diagnoses how durable the structure is against vibrations such as earthquakes. That is, the structural health monitoring system 10 determines whether the building BU or the like is damaged or whether the building can be used in the event of a large-scale earthquake or the like. On the other hand, in normal times, the structural health monitoring system 10 detects aging deterioration and the like, and calculates the seismic retrofitting implementation time or repair time of the building BU. As shown in the figure, the structural health monitoring system 10 may diagnose the building BU and notify the user who is the owner of the building of the diagnosis result. In particular, in the event of a disaster such as an earthquake, it is judged whether or not the building BU can secure the seismic strength stipulated by laws and regulations, or whether or not people can be inside the building BU. Therefore, the structural health monitoring system 10 may notify the user of the diagnosis result and the like.

On the other hand, the management system 20 first acquires data indicating a measurement result based on the acceleration generated in the building BU from the structural health monitoring system 10. Next, the management system 20 calculates the natural frequency of the building BU based on the acquired data. Further, it is assumed that the natural frequency of the building BU before, that is, before the earthquake occurs, is stored in the management system 20 in advance. When repairs or the like are performed, the value of the natural frequency may be improved. In such a case, the stored natural frequency may be updated to the value after repair. In addition, it is desirable that the history of repairs, etc. be saved in the database.

Therefore, the management system 20 can calculate how much the natural frequency has changed due to the earthquake by comparing the natural frequencies before and after the earthquake.

Hereinafter, the structural health monitoring system 10 connected to the management system 20 via a network will be described. First, the structural health monitoring system 10 may notify the user of the following contents, for example.

FIG. 2 is a diagram showing an example of the content notified by the structural health monitoring system according to the embodiment of the present invention. For example, as shown in the figure, it is assumed that a building BU having a height L is the target of diagnosis. In this example, when an earthquake occurs, the vibration of the earthquake causes a displacement ΔL in the building BU. First, the structural health monitoring system 10 detects the acceleration generated by the earthquake. Next, the structural health monitoring system 10 calculates the displacement ΔL by integrating the acceleration twice. Then, the structural health monitoring system 10 calculates the ratio of the displacement ΔL to the height L. In the notification, the structural health monitoring system 10 transmits, for example, data indicating the calculated ratio.

When the ratio of the displacement ΔL to the height L, that is, “ΔL / L” exceeds a predetermined value, it is often determined that the building BU cannot be used based on laws and regulations. Specifically, if the predetermined value is "1/100" and "(ΔL / L)> (1/100)", the building BU is diagnosed as unusable. In this way, the structural health monitoring system 10 measures the value used to calculate the so-called interlayer deformation angle. Further, the structural health monitoring system 10 may notify the user of a warning or the like based on the measurement result.

On the other hand, when there is no disaster such as an earthquake, that is, in so-called normal times, the structural health monitoring system 10 detects so-called constant vibration. Then, the structural health monitoring system 10 may calculate the elastic modulus or the like by using the detection result of the constant vibration or the like.

In this way, the structural health monitoring system 10 detects acceleration due to an earthquake or constant vibration, and generates data indicating the measurement results of the acceleration and the like. Then, the structural health monitoring system 10 transmits the data to the management system 20.

Next, the management system 20 calculates the natural frequency and the like based on the transmitted data. Then, when the natural frequency is calculated, the management system 20 can make the following determination, for example, as follows.

FIG. 3 is a diagram showing an example of the natural frequency calculated by the management system according to the embodiment of the present invention. In the illustrated example, the vertical axis shows the "natural frequency", while the horizontal axis shows the "time" for which the "natural frequency" is calculated.

As shown in the figure, since the building deteriorates over time, it ages with time, and the natural frequency decreases, that is, the seismic strength and the like decrease. When the building reaches a certain level due to deterioration over time, it reaches a level that requires measures such as repair or maintenance. The figure is an example showing the level that requires treatment as "the level that requires repair or maintenance". As shown in the figure, the management system 20 calculates the natural frequency at predetermined intervals. Then, it is determined whether or not each calculated natural frequency has reached the "level requiring repair or maintenance". In this way, the management system 20 can determine when a measure such as repair or maintenance is required. Specifically, in the illustrated example, the management system 20 can determine that the time indicated by "repair or maintenance" requires treatment such as repair or maintenance. That is, in the illustrated example, the management system 20 can notify the user that it is time to perform repair or maintenance or the like when it is time to indicate "repair or maintenance".

The "level requiring repair or maintenance", which is an example of the standard natural frequency, is a standard determined by laws and regulations, for example. However, the "level requiring repair or maintenance" may be a standard in which a safety factor or the like is set in addition to the standard determined by laws and regulations. Further, the reference natural frequency is set in advance in the storage device or the like of the management system 20 which is an example of the natural frequency storage means by the user's operation or the like.

Then, when the building is repaired or maintained, the building is repaired. Therefore, as shown in the figure, the natural frequency increases after "repair or maintenance". In this way, the management system 20 can make various judgments using the natural frequency calculated from the data indicating the acceleration.

In addition, the management system 20 is in a sound state of the structure, that is, after a disaster from the natural frequency calculated and stored at the time of construction or before a disaster (hereinafter referred to as "first natural frequency"). The user may be notified based on the decrease in the natural frequency (hereinafter referred to as "second natural frequency") calculated in the above. The first natural frequency may be stored in a storage device or the like of the management system 20 which is an example of the natural frequency storage means, and when repair or maintenance is performed, the increase after "repair or maintenance" is performed. May be the value.

≪ 2. Hardware configuration example of structural health monitoring system ≫
FIG. 4 is a block diagram showing an example of the hardware configuration of the detection device included in the structural health monitoring system according to the embodiment of the present invention. For example, the structural health monitoring system 10 has at least one detection device 1 as shown. For example, the detection device 1 includes an MPU (Micro Processing Unit) HW1, a power supply HW2, a communication device HW3, a storage device HW4, and an acceleration sensor HW5.

The MPUHW1 is an arithmetic unit that performs an arithmetic operation for realizing processing and a control device that controls hardware.

The power supply HW2 is a power supply circuit that converts a voltage so that each hardware can use the power supplied from the outside. In this example, the power is supplied from the outside via the communication device HW3.

The communication device HW3 is a device that communicates with an external device such as a server 11.

The storage device HW4 is a main storage device such as a so-called memory. The storage device HW4 may further have an auxiliary storage device. For example, the storage device HW4 stores data indicating the result of detection by the acceleration sensor HW5.

The acceleration sensor HW5 is, for example, a piezoelectric or electrostatic acceleration sensor. The acceleration sensor HW5 may be a displacement sensor or a combination with a displacement sensor, as long as it can measure the displacement. For example, the acceleration sensor HW5 may be a strain sensor, a potentiometer, or a combination thereof.

≪ 3. Management system hardware configuration example ≫
FIG. 5 is a block diagram showing an example of the hardware configuration of the management system according to the embodiment of the present invention. For example, the management system 20 is connected to the structural health monitoring system 10 and acquires data based on acceleration from the structural health monitoring system 10 as shown in the figure.

The management system 20 has, for example, a hardware configuration including a server 11 connected to the structural health monitoring system 10 and an output device 12 for displaying a calculation result or the like to the user US.

Further, the server 11 is, for example, an information processing device such as a PC (Personal Computer), a server, an electric circuit, or a combination thereof. Further, the output device 12 is a monitor or the like.

The server 11 of the management system 20 may be configured to have a storage device for storing map information. For example, the following map information is stored in advance in a storage device which is an example of a map information storage means.

FIG. 6 is a diagram showing an example of a display using map information by the management system according to the embodiment of the present invention. The illustrated map information DMAP is an example showing on the map information the place where the structure managed by the management system is located in Tokyo. As shown in the figure, when the map information DMAP is used, the management system can distinguish and display each structure on the map information while indicating the priority.

The priority is a value calculated by the overall processing described below. As shown in the figure, the management system distinguishes between the high-priority PLH structure, the medium-priority PLM structure, and the low-priority PLL structure according to the type of mark to be displayed on the map information. .. For example, in this way, the management system can display each structure on the map information based on the high and low priority.

≪ 4. Example of overall processing by the management system ≫
FIG. 7 is a flowchart showing an example of processing by the management system according to the embodiment of the present invention. The overall treatment performed when the structure is damaged will be described below. As shown in the figure, at the time of a disaster, the priority is first displayed based on the diagnosis result, that is, for example, the interlayer deformation angle (steps S101 and S102), and then the priority is given based on the natural frequency. It is desirable that the calculation is performed and the priority is displayed (steps S103 to S105).

<< Example of determining whether or not the diagnosis result has been acquired (step S101) >>
In step S101, the management system determines whether or not the diagnosis result has been acquired. For example, as shown in FIG. 2, the diagnosis is performed based on the interlayer deformation angle and the like. That is, in step S101, the management system determines whether or not a diagnostic result based on the interlayer deformation angle has been obtained.

Next, when the management system determines that the diagnosis result has been obtained (YES in step S101), the management system proceeds to step S102. On the other hand, if the management system determines that the diagnosis result has not been acquired (NO in step S101), the management system repeats step S101, that is, waits for the diagnosis result to be acquired.

<< Display example of priority based on diagnosis result (step S102) >>
In step S102, the management system displays the priority based on the diagnosis result. Specifically, for example, the management system sets a higher priority in order from the structure having the largest interlayer deformation angle. In this way, the management system first diagnoses each structure based on a value that can be calculated immediately when a disaster occurs, such as an interlayer deformation angle, and displays the priority.

<< Example of determining whether or not the natural frequency has been acquired (step S103) >>
In step S103, the management system determines whether or not the natural frequency has been acquired. For example, the natural frequency is calculated as follows.

FIG. 8 is a diagram showing a calculation example of the natural frequency by the management system according to the embodiment of the present invention. For example, when a frequency analysis method such as FFT (Fast Fourier Transform) or wavelet transform is used for the measured acceleration, the analysis result as shown in the figure can be obtained.

Specifically, the management system identifies the peak frequency PF having the largest amplitude among the accelerations generated in the structure from the analysis results. The peak frequency PF specified in this way is the natural frequency.

Next, when the management system determines that the natural frequency has been acquired (YES in step S103), the management system proceeds to step S104. On the other hand, if the management system determines that the natural frequency has not been acquired (NO in step S103), the management system repeats step S103, that is, waits for the natural frequency to be acquired.

<< Calculation example of priority (step S104) >>
In step S104, the management system calculates the priority. Specifically, the management system calculates the priority based on the reduced value of the natural frequency. For example, the above-mentioned first natural frequency is divided by the above-mentioned second natural frequency. The management system may calculate the difference between the first natural frequency and the second natural frequency. In this case, the higher the priority, the higher the priority.

In addition, the management system divides the second natural frequency by the reference natural frequency indicating "the level that requires repair or maintenance", or calculates the difference between the second natural frequency and the reference natural frequency. May be good. In this case, the lower the priority, the higher the priority.

The index of the natural frequency used when notifying the user (reference natural frequency, the first natural frequency, the second natural frequency) and the index of the natural frequency used when calculating the priority. May be different and may be the same.

<< Display example of priority based on priority (step S105) >>
In step S105, the management system displays the priorities based on the priorities. The priority order is output, for example, by the display screen, and the display screen first displays the priority order based on the diagnosis result based on step S102. Next, in step S105, the management system redisplays the priority based on step S102. That is, in step S105, the result reflecting the priority based on the natural frequency is displayed on the display screen.

For example, in the event of a disaster such as an earthquake, the management system first calculates the interlayer deformation angle and determines the priority based on the interlayer deformation angle as a primary judgment. Next, aftermath or constant vibration after a disaster is detected and data indicating acceleration is generated, and as a secondary judgment, the management system calculates the natural frequency and based on the priority (natural frequency). Determine priorities.

Since the interlayer deformation angle can be easily calculated or can be calculated without acceleration such as constant vibration, the management system can often calculate the interlayer deformation angle before the natural frequency. Therefore, as described above, the management system first determines the priority based on the interlayer deformation angle calculated earlier. Then, it is sorted in order of priority based on the natural frequency calculated after the interlayer deformation angle. In this way, the management system can quickly display the priority even after an earthquake or the like.

The natural frequency is a physical quantity determined based on the spring constant and mass of the structure. The spring constant is a coefficient determined by the flexural rigidity of the skeleton constituting the structural system, the spring constant of the ground, and the like. It is desirable that the natural frequency has a high value in seismic resistance and the like. Therefore, the influence of a disaster or the like can be indicated by the degree to which the natural frequency decreases before and after the occurrence of a disaster or the like.

In addition, the natural frequency can indicate the influence of the multiple earthquakes on the structure when there are multiple earthquakes. In other words, the interlayer deformation angle shows the effect of each earthquake even when there are multiple earthquakes, while the natural frequency shows the cumulative effect of multiple earthquakes. Shown. Therefore, using the natural frequency, the management system can combine the effects of multiple earthquakes to diagnose the structure.

The priority, the diagnosis result and the priority calculated by the whole process are output to the user by, for example, the following display screen.

FIG. 9 is a diagram showing an example of a display screen by the management system according to the embodiment of the present invention. The illustrated display screen PNL is an example of a screen displayed by the management system for displaying the priority order and the like. As shown in the figure, the management system displays the building with the highest priority so that the "priority" is "1". In the illustrated example, the building whose "building name" is "A building" is the building with the lowest natural frequency. That is, in this example, a plan is made to repair or maintain the building in order from the "A building". In this way, when the priority is displayed on the display screen PNL or the like, the user can indicate the priority for repairing or maintaining the managed structure.

As shown in the figure, the management system may display information other than the priority order together. Specifically, as shown in the figure, information such as "classification" indicating the location of the building, "date" such as data, and "evaluation result" indicating the degree of damage may be displayed together.

The management system may calculate the priority in consideration of both the natural frequency and the interlayer deformation angle, for example. Specifically, the management system calculates the priority based on the interlayer deformation angle in addition to the priority based on the natural frequency, and weights it by multiplying it by a preset weighting coefficient. The management system then adds up the weighted values to determine the true priority to refer to when determining the priority. In this way, the management system may determine the priority comprehensively in consideration of both the natural frequency and the interlayer deformation angle, for example.

Further, in the illustrated example, the “damage degree” may be displayed stepwise, as in the “diagnosis result”. For example, a plurality of criteria are preset for the interlayer deformation angle. Then, depending on the size of the interlayer deformation angle, the management system may display in stages according to the criteria reached, such as "high degree of damage", "medium damage" and "low degree of damage". Good.

In addition, the natural frequency and the interlayer deformation angle have values that prohibit the use of structures for safety reasons by laws and regulations. When at least one of the natural frequency and the interlayer deformation angle becomes the value of prohibition of use, the management system may display "prohibition of use" or the like.

The values used other than the natural frequency are not limited to the interlayer deformation angle. For example, the value used other than the natural frequency may be seismic intensity, inclination, or the like.

≪ 5. Management system function configuration example ≫
FIG. 10 is a functional block diagram showing an example of the functional configuration of the management system according to the embodiment of the present invention. For example, the management system 20 includes a calculation means FN1 and an output means FN2.

The calculation means FN1 calculates at least each natural frequency from the data DAC based on the acceleration of each structure acquired from the structural health monitoring system 10. Then, the calculation means FN1 calculates the priority of each structure based on the natural frequency. The calculation means FN1 is realized by, for example, a server 11 (see FIG. 5).

The output means FN2 outputs the priority of the treatment of each structure based on the priority. The output means FN2 is realized by an output device 12 (see FIG. 5) or the like.

First, the structural health monitoring system 10 detects the acceleration of the structure. When the structural health monitoring system 10 or the management system 20 knows the acceleration, it can calculate the interlayer deformation angle and the like, and can diagnose each structure. Then, the structural health monitoring system 10 transmits data based on the acceleration to the management system 20. Therefore, the management system 20 can calculate the natural frequency of each structure by the calculation means FN1. Next, the management system 20 can calculate the priority by comparing the degree of decrease in the natural frequency based on the calculated natural frequency.

When the priority can be calculated, the management system 20 can output the order in which the actions should be taken, that is, the priority, based on the priority, for example, as shown in FIG. 9, by the output means FN2.

When a large-scale earthquake or the like is damaged, it is often the case that multiple structures need to be repaired or maintained. In many cases, it is appropriate to take measures in order from the structure that is most affected by the disaster. Therefore, the management system 20 calculates the impact of the disaster on the structure based on the natural frequency. In this way, the management system 20 can appropriately indicate the priority of treatment of each structure.

All or part of each process according to the embodiment of the present invention may be realized by a program described in a programming language. That is, the program is a computer program for causing a computer such as an information processing device or an information processing system having one or more information processing devices to execute each procedure related to a priority display method.

Furthermore, embodiments according to one embodiment of the present invention are not limited to configurations and procedures other than those described above. That is, the embodiment according to the embodiment of the present invention may be an information processing method other than the above-described method and equivalent to the processing described above.

Further, each process according to the embodiment of the present invention is not limited to the order shown in the figure. For example, some or all of each process may be processed in a different order, parallel, distributed or omitted.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications or changes can be made within the scope of the gist of the present invention described in the claims. It is possible.

10 Structural health monitoring system 20 Management system 1 Detection device
11 server

Claims (6)

It is a management system that acquires data based on the acceleration of each structure from a structural health monitoring system that detects acceleration and diagnoses the structural performance of the structure.
A calculation means for calculating the priority of each structure based on the natural frequency of each structure calculated from the acceleration.
Look including an output means for outputting the priority treatment of the structure on the basis of the priority,
At the time of a disaster, the output means outputs the priority of treatment of each structure based on the diagnosis result of the structural performance of each structure, and then outputs the priority of treatment of each structure based on the priority. Redo <br /> Management system. The management system according to claim 1 , wherein the diagnostic result of the structural performance of each structure is calculated based on the interlayer deformation angle. Including a map information storage means for storing map information,
The management system according to claim 1 or 2 , wherein the output means distinguishes and displays each structure on the map information based on the high or low priority. The management system according to any one of claims 1 to 3 , wherein the output means notifies repair or maintenance of a structure based on the natural frequency. Further including a natural frequency storage means for storing the natural frequency of the sound state of each structure,
The calculation means according to any one of claims 1 to 4 , wherein the calculation means calculates the priority based on the natural frequency of the sound state and the natural frequency of each structure calculated from the acceleration. Management system. Further including a natural frequency storage means for storing a reference natural frequency indicating the required level of treatment in each structure.
The management system according to any one of claims 1 to 4 , wherein the calculation means calculates the priority based on the natural frequency of each structure calculated from the acceleration and the reference natural frequency.

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