JP7322244B1 - Early damage detection system with redundancy, early damage detection method and program with redundancy - Google Patents

Abstract

A redundant early damage detection system, a redundant early damage detection method, and a program are provided. A redundant early damage assessment system 1 includes one or more seismometers 101 that measure seismic motion at observation points provided in a structure, and damage to the structure based on the measurement data of the seismometers 101. and an early damage grasping server 105 that delivers a notification including the estimation result to the user's terminal device 107, and one or more first a second seismometer 201, and a second early damage assessment server 205 that estimates structural damage based on the measurement data of the second seismometer and delivers a second notification including the estimation result to the terminal device 107. ,including. [Selection drawing] Fig. 1

Description

The present invention relates to an early damage detection system with redundancy, an early damage detection method with redundancy, and a program.

2. Description of the Related Art There is a system in which a seismometer is attached to a structure such as a building in advance, and a computer acquires and processes information from the seismometer when an earthquake occurs, thereby estimating damage to the structure. (See Patent Documents 1 to 3, for example)

In addition, a computer obtains information from seismometers installed at locations other than the structure, and based on the ground characteristics and structural characteristics of the structure at the location of the structure, the structure where the seismometer is not installed There is also a system for estimating the damage caused by (See Patent Documents 4 to 6, for example)

FIG. 1 shows a typical configuration of a system for estimating damage to structures caused by an earthquake (hereinafter referred to as a structure health monitoring system 10) as described above. Measured data of seismometers 101 installed inside and outside a structure is uploaded via a network 102 to a collection server 103 provided in a data center or cloud. The collection server 103 transfers the collected measurement data via the network 104 to the early damage grasp server 105 provided in the data center or the cloud. The early damage assessment server 105 analyzes the acquired measurement data to estimate the damage of the structure, and transmits information such as prediction of the damage situation of the structure and whether or not access is possible to the terminal device 107 of the user via the network 106. (smartphone, etc.).

Japanese Unexamined Patent Application Publication No. 2012-168008 JP 2017-194309 A JP 2019-203713 A JP 2017-096737 A JP 2018-200313 A JP 2020-176836 A

The most important thing for the structure health monitoring system 10 is that the system works reliably when an earthquake disaster occurs. However, in the conventional structure health monitoring system 10, measures for ensuring operation in the event of an earthquake disaster, that is, ensuring system redundancy were not sufficient. In order to ensure sufficiently reliable operation of the structure health monitoring system 10, seismometer 101, network 102, collection server 103, network 104 between servers, network 106 between early damage assessment server 105 and users, etc. The components must be redundant so that none of them are missing and the soundness is maintained in the event of an earthquake disaster. A typical technique for realizing such a redundant configuration is to multiplex each of the constituent elements, but this requires a reasonable cost and imposes an excessive burden on the user. I give. Therefore, the provider of the conventional structure health monitoring system 10 does not guarantee that the system will operate reliably in the event of an earthquake disaster, and generally treats service suspension and the like as a disclaimer.

Therefore, it is desired to quickly notify the damage status of the structure while suppressing the uncertainty of the operation in the event of an earthquake disaster, which is a problem of the conventional structure health monitoring system 10, at a relatively low cost. It is required to provide the means to achieve the purpose. At the same time, it is desirable to maintain a high level of estimation accuracy.

The present invention is intended to solve such problems, and its main object is to provide an early damage detection system with redundancy, an early damage detection method with redundancy, and a program.

According to one embodiment, a redundant early damage assessment system includes one or more seismometers that measure seismic motion at observation points provided in a structure, and the structure based on the measurement data of the seismometers. An early damage detection server that estimates damage to an object and delivers a notification including the estimation result to a user's terminal device, and one or more that measures seismic motion at an observation point provided on the ground surface or in the ground away from the structure. and a second early damage grasping method for estimating the damage of the structure based on the measurement data of the second seismometer and delivering a second notification including the estimation result to the terminal device including a server;
According to one embodiment, in the early damage grasping system with redundancy, the second early damage grasping server, when the delivery of the notification by the early damage grasping server is not performed, the second Deliver notifications.
According to one embodiment, the early damage assessment system with redundancy further includes a distribution server, wherein the early damage assessment server and the second early damage assessment server receive the notification and the second notification is sent to the distribution server instead of the terminal device, and the distribution server receives the second notification and distributes the second notification to the terminal device when the notification cannot be received.
According to one embodiment, in the early damage assessment system with redundancy, the early damage assessment server holds in advance a seismic response analysis model of the structure, and uses the measurement data of the seismometer to The behavior of the structure is estimated by inputting it into the seismic response analysis model of the object, and the damage is estimated based on the behavior.
According to one embodiment, in the early damage assessment system with redundancy, the early damage assessment server detects the structure based on the difference in the early measurement data between the plurality of observation points provided on the structure. A behavior of an object is estimated, and the damage is estimated based on the behavior.
According to one embodiment, in the redundant early damage assessment system, the second early damage assessment server holds in advance the seismic response analysis model of the structure and the seismic response analysis model of the surface ground. The behavior of the surface layer is estimated by inputting the measurement data of the second seismometer into the seismic response analysis model of the surface layer, and the behavior of the surface layer is input into the seismic response analysis model of the structure. By doing so, the behavior of the structure is estimated, and the damage is estimated based on the behavior.
According to one embodiment, in the redundant early damage assessment system, the second early damage assessment server is based on the measurement data of the second seismometer and the seismic response analysis model of the surface ground. Changing the physical property values included in the seismic response analysis model of the surface layer so that the difference between the obtained behavior of the surface layer and the behavior of the surface layer obtained based on the measurement data of the seismometer becomes smaller. .
According to one embodiment, in the early damage grasping system with redundancy, the second early damage grasping server includes the measurement data of the second seismograph, the seismic response analysis model of the surface ground, and the structure The structure is designed so that the difference between the behavior or damage of the structure obtained based on the seismic response analysis model of the object and the behavior or damage of the previous structure obtained based on the measurement data of the seismometer is small. Change the physical property values included in the seismic response analysis model of .
According to one embodiment, a redundant early damage assessment system includes one or more second seismometers for measuring seismic motion at observation points provided on the surface or in the ground remote from the structure; When a notification is not delivered by an early damage assessment server that estimates damage to the structure based on seismic motion at an observation point provided in the structure, the structure may be detected based on the measurement data of the second seismometer. a second early damage recognition server for estimating damage to the object and delivering a second notification including the estimation result to the terminal device.
According to one embodiment, a redundant early damage assessment system includes one or more seismometers that measure seismic motion at observation points provided on a structure, and One or more second seismometers for measuring seismic motion at the provided observation points, and an early damage assessment server, wherein the early damage assessment server detects damage to the structure based on the measurement data of the seismometers. is estimated, a notification containing the estimation result is delivered to the user's terminal device, the damage to the structure is estimated based on the measurement data of the second seismometer, and a second notification containing the estimation result is transmitted to the Distribute to the terminal device.
According to one embodiment, the early damage grasping method with redundancy includes: a measurement step in which one or more seismometers measure seismic motion at observation points provided in a structure; a distribution step of estimating damage to the structure based on the measurement data of the seismometer and distributing a notification including the estimation result to a user's terminal device; a second measurement step of measuring seismic motion at an observation point provided on the ground surface or in the ground; and a second delivery step of estimating and delivering a second notification including the estimation result to the terminal device.
According to one embodiment, the early damage grasping method with redundancy includes one or more second seismometers measuring seismic motion at observation points provided on the surface or in the ground away from the structure. 2, and a second early damage grasping server when the notification is not delivered by the early damage grasping server for estimating the damage of the structure based on the seismic motion at the observation point provided in the structure. and a second delivery step of estimating damage to the structure based on the measurement data of the second seismometer and delivering a second notification including the estimation result to the terminal device.
According to one embodiment, a redundant early damage assessment method includes a measurement step in which one or more seismometers measure seismic motion at observation points provided in a structure; A second measurement step in which a seismometer measures seismic motion at an observation point provided on the ground surface or in the ground away from the structure; a delivery step of estimating the damage and delivering a notification including the estimation result to the terminal device of the user; and a second delivery step of delivering a notification of to the terminal device.
According to one embodiment, a program causes a computer to perform the above method.

According to the present invention, it is possible to provide a redundant early damage detection system, a redundant early damage detection method, and a program.

It is a figure which shows the structure of the conventional structure health monitoring system. 1 is a block diagram showing the configuration of an early damage grasping system 1 according to Embodiment 1; FIG. 3 is a block diagram showing the functional configuration of a collection server 103; FIG. 3 is a block diagram showing the functional configuration of an early damage assessment server 105; FIG. 2 is a block diagram showing the functional configuration of a collection server 203; FIG. 3 is a block diagram showing the functional configuration of an early damage assessment server 205; FIG. 4 is a flow chart showing the operation of the early damage grasping system 1 according to the first embodiment; FIG. 2 is a block diagram showing the configuration of an early damage assessment system 1 according to a second embodiment; FIG. 9 is a flow chart showing the operation of the early damage grasping system 1 according to the second embodiment; 4 is a flowchart showing an example of ground model tuning processing. 4 is a flowchart showing an example of tuning processing for a structure model; 2 is a block diagram showing another configuration of the early damage grasping system 1. FIG. 2 is a block diagram showing another configuration of the early damage grasping system 1. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
FIG. 2 is a block diagram showing the configuration of the early damage grasping system 1 according to Embodiment 1 of the present invention.

The early damage assessment system 1 includes a structure health monitoring system 10 and a second structure health monitoring system 20 .

Here, the structure health monitoring system 10 and the second structure health monitoring system 20 do not depend on each other and operate independently. Then, when the structure health monitoring system 10 does not operate normally, the second structure health monitoring system 20 notifies the user of the damage condition of the structure. Thus, the early damage grasping system 1 has a redundant configuration including two subsystems.

The structure health monitoring system 10 includes one or more seismometers 101 installed inside and outside a structure, a network 102 that communicably connects the seismometers 101 and a collection server 103, and a collection server 103 provided in a data center or cloud. , a network 104 that communicably connects the collection server 103 and the early damage assessment server, an early damage assessment server 105 provided in a data center or cloud, and a communication between the early damage assessment server 105 and the user's terminal device 107. It includes a network 106 to be connected and a terminal device 107 such as a smartphone used by the user.

The seismograph 101 is a device that measures and outputs earthquake shaking (earthquake motion) at an arbitrary observation point. A typical seismometer 101 includes a three-axis accelerometer and a processing unit that calculates and outputs acceleration-based measurement data. The measured data includes, for example, maximum acceleration, instrumental seismic intensity, and seismic waves (a data set indicating chronological changes in acceleration, specifically, a set of accelerations acquired at predetermined intervals). One or more seismographs 101 are installed at observation points inside and outside the structure (in addition to being provided on the structure, there are also those provided on the ground surface where the structure is located), and output the seismic motion at the observation point as measurement data.

The measurement data output by the seismometer 101 is transmitted to the collection server 103 via the network 102 . Network 102 is typically a mobile communication network, a leased line, the Internet, or a combination thereof.

The collection server 103 is an information processing device that includes a receiving unit 1031 that receives and accumulates measurement data from the seismometer 101 and an output unit 1032 that outputs the received measurement data to the outside (see FIG. 3). The collection server 103 is typically a server computer provided in a data center, cloud computing environment, or the like.

The measurement data acquired by the collection server 103 is transmitted to the early damage assessment server 105 via the network 104 . Network 104 is typically a leased line or the like.

The early damage assessment server 105 includes a receiving unit 1051 that receives and accumulates measurement data from the collection server 103, an estimation unit 1052 that estimates damage to structures based on the received measurement data, and an output unit 1053 that outputs estimation results to the outside. (see FIG. 4). The early damage assessment server 105 is typically a server computer provided in a data center, cloud computing environment, or the like.

Two examples of the structure damage estimation processing method executed by the early damage grasping server 105 are shown.
(1) Method using simulation It is assumed that the estimation unit 1052 stores in advance a seismic response analysis model of a structure. The seismic response analysis model of structures is a simulation model that estimates the behavior of structures when seismic waves are input to observation points.
The receiving unit 1051 receives seismic waves measured by the seismographs 101 installed at observation points inside and outside the structure.
The estimation unit 1052 inputs the received seismic waves to the observation points of the seismic response analysis model of the structure. The seismic response analysis model estimates the behavior of structures based on input seismic waves. This makes it possible to calculate the magnitude of shaking at observation points where seismic waves are not directly measured. For example, in the case of a building, the deformation amount of each floor including the floor on which the seismometer 101 is not installed can be obtained. The estimating unit 1052 evaluates the degree of damage to the building, whether or not it is possible to enter the building, etc., based on the amount of deformation of each floor of the building. That is, the degree of damage, which is an index expressed as a function of the amount of deformation, is calculated, and whether or not it is possible to enter a building, which is another index expressed as a function of the amount of deformation, is determined. This evaluation result by the estimation unit 1052 is hereinafter referred to as information on structural damage.
The output unit 1053 outputs information about structural damage to the outside.

(2) Method without Simulation The receiver 1051 receives seismic waves measured by the seismometers 101 installed at observation points inside and outside the structure. For example, in the case of a building, seismic waves are received from seismometers 101 installed on each floor.
The estimation unit 1052 integrates the received seismic waves (acceleration time series data) to calculate a displacement waveform. Then, the amount of deformation is calculated from the difference in displacement waveforms between observation points, and the degree of damage to the structure is evaluated based on the amount of deformation. For example, the deformation amount of each floor can be calculated by subtracting the displacement waveform of the lower floor of the building from the displacement waveform of the upper floor of the building. The estimating unit 1052 evaluates the degree of damage to the building, whether or not it is possible to enter the building, etc., based on the amount of deformation of each floor of the building.
The output unit 1053 outputs information about structural damage to the outside.

Information about structural damage estimated by the early damage assessment server 105 is notified to the terminal device 107 used by the user via the network 106 . Network 106 is typically a mobile communication network, a public telephone network, a satellite communication network, a leased line, or the like.

The terminal device 107 receives information about the damage to the structure and notifies the user of the information by means of screen display, voice, or the like. The notification may be transmitted as text information or image information by, for example, SMS (Short Message Service), e-mail, chat, SNS (Social Networking Service) or the like, or may be transmitted as voice information by telephone or the like. The terminal device 107 is typically a smart phone, a tablet computer, a PC (personal computer), a mobile phone, a landline phone, a satellite phone, a facsimile machine, or the like.

The second structure health monitoring system 20 includes one or more seismometers 201 installed near a structure, a network 202 that communicably connects the seismometers 201 and a collection server 203, and a data center or cloud. a network 204 that communicably connects the collection server 203 and the early damage assessment server; an early damage assessment server 205 provided in a data center or a cloud; and a terminal device 107 such as a smartphone used by a user.

The second structure health monitoring system 20 is preferably a completely separate system from the structure health monitoring system 10 described above. In other words, it is preferable that the two systems do not share information processing devices, networks, and the like that constitute the systems.

The configuration and function of the seismometer 201 are similar to those of the seismometer 101 . However, the seismometer 201 is installed at an observation point on the surface or in the ground away from the structure, and outputs measurement data of seismic motion at the observation point.

If measurement data of seismometers installed in various places is provided by a third party, the measurement data may be obtained and used as measurement data by the seismometer 201 . For example, K-NET (Kyoshin Network) and KiK-net (Kiban Kyoshin Network) operated by the National Research Institute for Earth Science and Disaster Resilience are observed at observation facilities nationwide. Since the seismic motion measurement data is open to the public immediately, it is suitable for use by the second structure health monitoring system 20 .

The configurations and functions of the network 202 , collection server 203 (see FIG. 5), and network 204 are similar to those of the network 102 , collection server 103 , and network 104 .

The early damage assessment server 205 includes a receiving unit 2051 that receives and accumulates measurement data from the collection server 203, an estimation unit 2052 that estimates damage to structures based on the received measurement data, and an output unit 2053 that outputs estimation results to the outside. (see FIG. 6). The early damage assessment server 205 is typically a server computer provided in a data center, cloud computing environment, or the like.

An example of a structure damage estimation processing method executed by the early damage grasping server 205 is shown.
It is assumed that the estimating unit 2052 stores in advance an earthquake response analysis model of surface ground in addition to the earthquake response analysis model of the structure. The surface ground seismic response analysis model is a simulation model that estimates the behavior of the surface ground, that is, the ground on which structures are placed, when seismic waves are input to observation points. The seismic response analysis model of the structure can estimate the behavior of the structure by inputting the output of the seismic response analysis model of the surface layer to the grounding point of the structure.
The receiving unit 2051 receives seismic waves measured by the seismometer 201 installed at an observation point on the ground surface or underground.
The estimation unit 2052 inputs the seismic waves received from the seismometer 201 to the observation points of the surface ground seismic response analysis model, that is, the installation points of the seismometers 201 . The surface ground seismic response analysis model estimates the behavior of the surface ground based on the input seismic waves. This makes it possible to calculate seismic waves at the grounding points of structures where seismic waves are not directly measured. The estimating unit 2052 inputs the seismic waves output by the seismic response analysis model of the surface layer to the grounding point in the seismic response analysis model of the structure. Thereby, the seismic response analysis model of the structure estimates the behavior of the structure based on the input seismic waves. For example, the deformation amount for each floor is obtained. The estimating unit 2052 evaluates the degree of damage to the building, whether it is possible to enter the building, and the like, based on the amount of deformation of each floor of the building.
The output unit 2053 outputs the evaluation result by the estimating unit 2052 to the outside as information on damage to the structure.

Here, the output unit 2053 can output information about structural damage only when the structural health monitoring system 10 does not operate normally. Methods for realizing such operations include, for example, the following.
The output unit 2053 periodically performs life-and-death monitoring or performance monitoring of each component (information processing device, network, etc.) of the structure health monitoring system 10 . When it determines that any of these components are down or no longer meet the predetermined performance, it outputs information about the damage to the structure.
The output unit 2053 confirms whether or not the information regarding the damage to the structure output from the structure health monitoring system 10 has reached the terminal device 107 within a certain period of time after the seismometer 201 detects the seismic wave. do. For example, the confirmation can be performed by setting the output unit 2053 as one of the output destinations of the information on the structure damage by the structure health monitoring system 10 . If the arrival cannot be confirmed, the output unit 2053 outputs information about the damage to the structure to the terminal device 107 .

The configuration and function of network 206 are similar to network 106 . Also, the output destination of the information on structural damage is the terminal device 107 of the user, as in the structure health monitoring system 10 .

FIG. 7 is a flow chart showing an example of the operation of the early damage assessment system 1 according to the first embodiment.
S1-1: Occurrence of an earthquake An earthquake occurs. The structure health monitoring system 10 and the second structure health monitoring system 20 start operating in parallel.

(Operation of structure health monitoring system 10)
S1-21: The seismometer 101 installed in the structure outputs measurement data The seismometer 101 installed in the structure detects seismic motion and outputs measurement data.

S1-22: Collection Server 103 Collects Measurement Data The collection server 103 collects measurement data and transmits it to the early damage grasping server 105 .

S1-23: Early Damage Grasping Server 105 Estimates Structural Damage, etc. The early damage judging server 105 estimates the degree of damage to the structure and determines whether entry is allowed or not based on the measurement data. These processing results are retained as information on structural damage.

S1-24: Early Damage Grasping Server 105 Delivers Information on Structural Damage The early damage recognizing server 105 delivers information on structural damage to the terminal device 107 of the user.

(Operation of the second structure health monitoring system 20)
S1-31: The seismometer 201 installed on the ground near the structure outputs measurement data The seismometer 201 installed on the ground near the structure detects seismic motion and outputs measurement data.

S 1 - 32 : Collection Server 203 Collects Measurement Data The collection server 203 collects measurement data and transmits it to the early damage grasping server 205 .

S1-33: Early damage comprehension server 205 estimates the degree of damage to the structure, etc. Estimate the degree of damage to structures and determine whether entry is possible. These processing results are retained as information on structural damage.

S1-34: Did the early damage comprehension server 105 deliver information about structural damage?
The early damage comprehension server 205 determines whether or not the early damage comprehension server 105 has succeeded in distributing information regarding structural damage. If successful, terminate the process. If unsuccessful, the process transitions to step S1-35.

S1-35: Early Damage Understanding Server 205 Distributes Information Regarding Structural Damage The early damage grasping server 205 distributes information regarding structural damage to the terminal device 107 of the user.

In this embodiment, the structure health monitoring system 10 and the second structure health monitoring system 20 do not depend on each other and operate independently. Then, when the structure health monitoring system 10 does not operate normally, the second structure health monitoring system 20 notifies the user of the damage condition of the structure. As a result, even if the structure health monitoring system 10 suffers a failure or performance degradation due to an earthquake, the second structure health monitoring system 20 notifies the damage status of the structure at an early stage without waiting for restoration. can do.

Moreover, in this embodiment, the structure health monitoring system 10 utilizes the seismometers 101 installed inside and outside the structure. Accordingly, when the structure health monitoring system 10 is in operation, it is possible to output highly accurate information regarding structural damage based on the actual behavior of the structure.

On the other hand, the second structure health monitoring system 20 uses a seismometer 201 installed on the ground away from the structure to estimate the behavior of the structure through simulation. As a result, even if the seismometer 101 or the like cannot operate normally due to the influence of damage to the structure, the second structure health monitoring system 20 can obtain information about the damage to the structure without being affected by the damage. can be output.

Further, according to the early damage assessment system 1 of the present embodiment, it is possible to achieve system redundancy at a lower cost than a redundant configuration in which the structure health monitoring system 10 is simply duplicated. . That is, even if the high-precision but high-cost structure health monitoring system 10 fails to operate normally due to an earthquake disaster, the second structure health monitoring system 20 immediately takes over its function. . The second structural health monitoring system 20 has a low-cost, relatively disaster-tolerant configuration, but is capable of making damage estimates with sufficient accuracy. Therefore, according to the early damage detection system 1, it is possible to achieve an excellent balance between the certainty of operation and the cost.

<Embodiment 2>
In the early damage assessment system 1 according to the first embodiment, the user receives either the information about the damage to the structure from the structure health monitoring system 10 or the information about the damage to the structure from the second structure health monitoring system 20. The output unit 2053 determines whether to provide the In Embodiment 2, a delivery system 30 is further provided in the early damage assessment system 1, and the delivery system 30 executes the determination and information delivery to the user.

FIG. 8 is a block diagram showing the configuration of an early damage grasping system 1 according to Embodiment 2 of the present invention.

The early damage assessment system 1 includes a structure health monitoring system 10 , a second structure health monitoring system 20 and a delivery system 30 .

Here, the structure health monitoring system 10 and the second structure health monitoring system 20 do not depend on each other and operate completely independently. The distribution system 30 can be made redundant by a known technique such as hardware duplication. As a result, the entire system can be redundantly configured at a lower cost than when the structure health monitoring system 10 is duplicated.

The structure health monitoring system 10 has a seismometer 101 , a network 102 , a collection server 103 , a network 104 and an early damage assessment server 105 . The configuration and operation of the above constituent elements are substantially the same as those of the first embodiment.
In this embodiment, the structure health monitoring system 10 further has a network 108 that communicably connects the early damage assessment server 105 and a distribution server 301 (described later). Then, the early damage grasping server 105 outputs the information about the structural damage to the distribution server 301.

A second structure health monitoring system 20 has a seismometer 201 , a network 202 , a collection server 203 , a network 204 and an early damage assessment server 205 . The above components are the same as in the first embodiment. The configuration and operation of the above constituent elements are substantially the same as those of the first embodiment.
In this embodiment, the second structure health monitoring system 20 further has a network 208 that communicably connects the early damage assessment server 205 and a distribution server 301 (described later). Then, the early damage grasping server 205 outputs the information about the structural damage to the distribution server 301.

The distribution system 30 includes a distribution server 301 that distributes information to users, a network 302 that communicably connects the distribution server 301 and user terminal devices 107 , and user terminal devices 107 .

The distribution server 301 receives information on structural damage from both the early damage assessment server 105 and the early damage assessment server 205 . Then, when information cannot be normally received from the structure health monitoring system 10, the early damage assessment server 205 operates to distribute information to the user. Methods for realizing such operations include, for example, the following.
- When the distribution server 301 receives the information about the structural damage outputted from the early damage grasping server 105 first, the distribution server 301 distributes the information to the terminal device 107 of the user. On the other hand, when the information about the damage of the structure output from the early damage recognition server 205 is received first, it waits for a predetermined time until the information from the early damage recognition server 105 is received.
If the information from the early damage assessment server 105 can be received within a predetermined time, the information is delivered to the terminal device 107 of the user. In this case, the information relating to structural damage output from the early damage assessment server 205 is not distributed. On the other hand, if the information from the early damage assessment server 105 cannot be received even after the predetermined time has passed, it is assumed that a failure has occurred in the structure health monitoring system 10, and damage to the structure output from the early damage assessment server 205 is determined. to the terminal device 107 of the user.
- When the distribution server 301 receives the information about the structural damage outputted from the early damage grasping server 105 first, the distribution server 301 distributes the information to the terminal device 107 of the user. On the other hand, when the information about the structural damage outputted from the early damage grasping server 205 is received first, the information is delivered to the terminal device 107 of the user as a flash report. After that, when the information about the structural damage outputted from the early damage grasping server 105 can be received, the information is delivered to the terminal device 107 of the user as detailed information.

The information about the structural damage output by the distribution server 301 is notified to the terminal device 107 used by the user via the network 302 . Network 302 is typically a mobile communication network, a public switched telephone network, a satellite communication network, a leased line, or the like.

The configuration and operation of the terminal device 107 are the same as in the first embodiment.

FIG. 9 is a flow chart showing an example of the operation of the early damage assessment system 1 according to the first embodiment.
S2-1: Occurrence of an earthquake An earthquake occurs. The structure health monitoring system 10 and the second structure health monitoring system 20 start operating in parallel.

(Operation of structure health monitoring system 10)
S2-21: Seismometer 101 installed on structure outputs measurement data The seismometer 101 installed on the structure detects seismic motion and outputs measurement data.

S2-22: Collection Server 103 Collects Measurement Data The collection server 103 collects measurement data and transmits it to the early damage recognition server 105 .

S2-23: Early Damage Grasping Server 105 Estimates Structural Damage, etc. The early damage judging server 105 estimates the degree of damage to the structure and determines whether entry is allowed or not based on the measurement data. These processing results are retained as information on structural damage.

S2-24: Early Damage Grasping Server 105 Outputs Information on Damage to Structure The server 105 for early damage grasping outputs information on damage to the structure to the distribution server 301 .

(Operation of the second structure health monitoring system 20)
S2-31: The seismometer 201 installed on the ground near the structure outputs measurement data The seismometer 201 installed on the ground near the structure detects seismic motion and outputs measurement data.

S2-32: Collection Server 203 Collects Measurement Data The collection server 203 collects measurement data and transmits it to the early damage recognition server 205 .

S2-33: Early damage comprehension server 205 estimates the degree of damage to the structure, etc. Estimate the degree of damage to structures and determine whether entry is possible. These processing results are retained as information on structural damage.

S 2 - 34 : Early Damage Grasping Server 205 Outputs Information on Damage to Structure The server 205 for early damage grasping outputs information on damage to the structure to the distribution server 301 .

S2-4: Distribution server 301 distributes information about structure damage Distribute to device 107 .

<Embodiment 3>
The early damage assessment system 1 according to the third embodiment has a special configuration for improving the simulation accuracy of the second structure health monitoring system 20 by using the estimation results from the structure health monitoring system 10 .

The estimation result by the structure health monitoring system 10 is calculated based on seismic waves actually measured at observation points inside and outside the structure. On the other hand, the estimation result by the second structure health monitoring system 20 is calculated based on the seismic waves estimated using the seismic response analysis model of surface ground. The smaller the difference between the two estimation results, the closer the estimation result by the second structure health monitoring system 20 to reality, that is, the higher the accuracy.

Therefore, in the present embodiment, the second structure health monitoring system 20 adjusts its own estimation algorithm as needed so that the difference between its own estimation result and the estimation result by the structure health monitoring system 10 becomes smaller. to tune. Specifically, the second structure health monitoring system 20 performs the processing shown in the following steps after estimating the information about the structure damage. Tuning can be performed on two models, the ground and the structure, respectively.

FIG. 10 is a flowchart showing an example of ground model tuning processing executed by the second structure health monitoring system 20 .
<Tuning the ground model>
S3-G1: Acquiring measurement data from the structure health monitoring system 10 Get measurement data.

S3-G2: Trial of Estimation The early damage grasping server 205 acquires the spectrum ( (referred to as Spec 201) or a time history waveform (referred to as Wave 201). Also, the early damage assessment server 205 obtains the spectrum (Spec 101) or the time history waveform (referred to as Wave 101) of the shaking based on the measurement data of the seismometer 101 acquired in S3-G1.

S3-G3: Tuning of surface ground seismic response analysis model The early damage comprehension server 205 sets a plurality of physical properties included in the surface ground seismic response analysis model so that Spec 201 approaches Spec 101 or Wave 201 approaches Wave 101. change the value. The changed physical property values can be automatically calculated by using a known optimization method such as genetic algorithms (GA). That is, the difference between Spec 201 and Spec 101 or the difference between Wave 201 and Wave 101 is used as the objective function, and the physical property value is used as the variable to obtain the variable that minimizes the objective function.

S3-G4: Application to Evaluation The early damage comprehension server 205 stores the physical property values after the change obtained in S3-G3 separately for each magnitude of shaking. In other words, the physical property value that minimizes the objective function referred to in S3-G3 may differ depending on the magnitude of shaking. Therefore, for example, by dividing the magnitude of shaking into m stages and holding the optimum physical property value for each division, seismic response analysis of surface ground using the optimum physical property value according to the magnitude of shaking model can be provided.

When the early damage assessment server 205 observes shaking next time, it reads out the optimum physical property value corresponding to the magnitude of the shaking, and uses the seismic response analysis model of the surface layer ground using this physical property value. As a result, it is possible to estimate the shaking of the ground just below the structure while suppressing the estimation error.

Note that the early damage grasping server 205 provides, for example, the measurement data of the seismometer 101, Spec 101, Wave 101, the measurement data of the seismometer 201, Spec 201, Wave 201, the difference between Spec 201 and Spec 101, the difference between Wave 201 and Wave 101, and the like in tables and graphs. A function for outputting a summarized report may be provided. This enables engineers to visually check the estimation accuracy of the surface ground seismic response analysis model, which is useful when manually tuning physical property values.

FIG. 11 is a flow chart showing an example of the structure model tuning process executed by the second structure health monitoring system 20 .
<Tuning of structure model>
S3-B1: Obtain measurement data from structure health monitoring system 10 Get measurement data. Also, from the early damage assessment server 105, the behavior of the structure (maximum deformation, natural period, non-linear characteristics of the building, etc.) or information on damage to the structure is acquired.

S3-B2: Trial of Estimation The early damage grasping server 205 estimates the surface ground directly below the structure based on the measurement data of the seismometer 201 installed on the ground near the structure and the seismic response analysis model of the surface ground. Estimate behavior.
In addition, the early damage grasping server 205 is based on the estimated behavior of the surface ground directly under the structure and the seismic response analysis model of the structure. ) or extrapolate information about structural damage.

S3-B3: Tuning of the seismic response analysis model of the structure The early damage assessment server 205 receives information on the behavior of the structure (maximum deformation, natural period, non-linear characteristics of the building, etc.) acquired in S3-B1 or information on the damage of the structure. and the behavior of the structure (maximum deformation, natural period, non-linear characteristics of the building, etc.) estimated in S3-B2 or the information on the damage of the structure, so that the difference is minimized, the seismic response analysis model of the structure Change multiple physical properties (stiffness, damping, etc.) included in . The changed physical property values can be automatically calculated by using a known optimization method such as the subspace method.

S3-B4: Application to Evaluation The early damage comprehension server 205 stores the changed physical property values obtained in S3-B3 by classifying them according to the magnitude of the shaking. That is, the physical property value that minimizes the objective function referred to in S3-B3 may differ depending on the magnitude of shaking. Therefore, for example, by dividing the magnitude of shaking into p stages and storing the optimum physical property value for each division, the seismic response analysis of the structure using the optimum physical property value according to the magnitude of shaking model can be provided.

When the early damage assessment server 205 observes the next shaking, it reads out the optimum physical property value corresponding to the magnitude of the shaking, and uses the seismic response analysis model of the structure using this physical property value. As a result, it is possible to estimate information related to the behavior of structures (maximum deformation, natural period, nonlinear characteristics of buildings, etc.) or damage to structures, while suppressing estimation errors.

The early damage comprehension server 205 is, for example, the measurement data of the seismometer 101, the behavior of the structure (maximum deformation, natural period, non-linear characteristics of the building, etc.) acquired from the early damage comprehension server 105, or information related to the damage of the structure. , measurement data of the seismometer 201, behavior of the structure estimated by the early damage assessment server 205 (maximum deformation, natural period, non-linear characteristics of the building, etc.) or information on damage to the structure, early damage assessment server 105 and early damage A function of outputting a report summarizing the behavior of the structure (maximum deformation, natural period, non-linear characteristics of the building, etc.) output by the grasping server 205 or the difference of information on the damage of the structure in a table or graph may be provided. good. This enables engineers to visually check the estimation accuracy of the seismic response analysis model of the structure, which is useful when manually tuning physical property values.

Although the embodiments of the present invention have been described above, the present invention is not limited to these, and can be modified as appropriate (including omission, addition, replacement, etc. of components and processes) as long as the gist of the invention is not impaired. It is possible to

For example, in the above-described embodiment, the seismometer 101 is installed in the structure, and the seismometer 201 is installed on the surface of the ground or in the ground away from the structure. However, the seismometer 101 does not necessarily have to be installed at an observation point provided in a structure as long as it can measure the seismic motion at that observation point. Similarly, the seismometer 201 does not necessarily need to be installed at an observation point provided on the ground surface or in the ground away from the structure as long as the seismic motion can be measured at the observation point.

Further, in the above-described embodiment, the second structure health monitoring system 20 is preferably a completely separate system from the structure health monitoring system 10, and both systems are information processing devices constituting the system. It was explained that it is preferable not to share a network, etc. However, the second structure health monitoring system 20 may share some information processing devices, networks, etc. with the structure health monitoring system 10 . For example, in the configuration shown in FIG. 2, the early damage comprehension server 105 and the early damage comprehension server 205 may be implemented in the same server. In this case, network 106 and network 206 may also be the same network (FIG. 12). Similarly, in the configuration shown in FIG. 8, the early damage comprehension server 105 and the early damage comprehension server 205 may be mounted on the same server. In this case, network 108 and network 208 may also be the same network (FIG. 13). With such a configuration, it is possible to ensure a realistic level of operational certainty in the event of a disaster, while keeping costs lower than in the above-described embodiment.

The information processing of the present invention may be implemented by hardware, or may be implemented by a CPU executing a computer program. A computer program may be supplied to a computer on various types of non-transitory computer readable medium or transitory computer readable medium.

1 early damage assessment system 10 structure health monitoring system 20 second structure health monitoring system 101 seismometer,
102 network 103 collecting server 104 network 105 early damage grasping server 1051 receiving unit 1052 estimating unit 1053 outputting unit 106 network 107 terminal device 108 network 201 seismometer 202 network 203 collecting server 204 network 205 early damage grasping server 2051 receiving unit 2052 estimating unit 2053 Output unit 206 Network 208 Network 30 Distribution system 301 Distribution server 302 Network

Claims (14)

one or more seismometers for measuring seismic motion at observation points provided in the structure;
an early damage grasping server that estimates damage to the structure based on the measurement data of the seismometer and delivers a notification including the estimation result to a terminal device of a user;
one or more second seismometers that measure seismic motion at an observation point provided on the ground surface or in the ground away from the structure;
A second early stage of estimating damage to the structure based on the measurement data of the second seismometer without using the data of the seismometer and delivering a second notification including the estimation result to the terminal device. a damage-acquisition server ;
The early damage comprehension server and the second early damage comprehension server do not depend on each other and operate independently.
Early damage detection system with redundancy. 2. The early damage awareness system with redundancy according to claim 1, wherein said second early damage awareness server delivers said second notification when said notification is not delivered by said early damage awareness server. further having a distribution server;
The early damage comprehension server and the second early damage comprehension server transmit the notification and the second notification to the distribution server instead of the terminal device,
2. The early damage grasping system with redundancy according to claim 1, wherein said distribution server receives said second notification and distributes said second notification to said terminal device when said notification cannot be received. The early damage assessment server holds an earthquake response analysis model of the structure in advance, and estimates the behavior of the structure by inputting the measurement data of the seismometer into the earthquake response analysis model of the structure. , to estimate the damage based on the behavior. The early damage assessment server estimates the behavior of the structure based on the difference in the measurement data between the plurality of observation points provided on the structure, and estimates the damage based on the behavior. 1. The early damage detection system with redundancy according to 1. The second early damage comprehension server holds in advance a seismic response analysis model of the structure and a seismic response analysis model of the surface ground, and the measurement data of the second seismometer is used for the seismic response analysis of the surface ground. Estimate the behavior of the surface ground by inputting it into the model, estimate the behavior of the structure by inputting the behavior of the surface ground into the seismic response analysis model of the structure, and estimate the damage based on the behavior The system of claim 1 for early damage detection with redundancy. The second early damage comprehension server obtains the behavior of the surface ground based on the measurement data of the second seismometer and the seismic response analysis model of the surface ground, and the behavior of the surface ground based on the measurement data of the seismometer. 7. The early damage grasping system with redundancy according to claim 6, wherein the physical property values included in the seismic response analysis model of the surface layer are changed so as to reduce the difference between the behavior of the surface layer and the behavior of the surface layer. The second early damage comprehension server calculates the behavior or damage of the structure based on the measurement data of the second seismometer, the seismic response analysis model of the surface ground, and the seismic response analysis model of the structure. , the physical property values included in the seismic response analysis model of the structure are changed so that the difference between the behavior or damage of the previous structure obtained based on the measurement data of the seismometer is reduced. early damage detection system. one or more second seismometers that measure seismic motion at observation points provided on the ground surface or in the ground away from the structure;
When the early damage assessment server for estimating damage to the structure based on the seismic motion at the observation point provided in the structure does not deliver the notification, the a second early damage awareness server that estimates damage to a structure and delivers a second notification including the estimation result to a terminal device. An early damage awareness system with redundancy. one or more seismometers for measuring seismic motion at observation points provided in the structure;
one or more second seismometers that measure seismic motion at an observation point provided on the ground surface or in the ground away from the structure;
an early damage detection server;
The early damage comprehension server estimates the damage of the structure based on the measurement data of the seismometer, delivers a notification including the estimation result to the user's terminal device,
Estimate damage to the structure based on the measurement data of the second seismometer without using the data of the seismometer , and deliver a second notification including the estimation result to the terminal device. early damage detection system. a measurement step in which one or more seismometers measure seismic motion at observation points provided in the structure;
a delivery step in which the early damage assessment server estimates the damage of the structure based on the measurement data of the seismometer and delivers a notification including the estimation result to the terminal device of the user;
a second measurement step in which one or more second seismometers measure seismic motion at an observation point provided on the ground surface or in the ground away from the structure;
A second early damage comprehension server estimates damage to the structure based on the measurement data of the second seismometer without using the data of the seismometer, and sends a second notification including the estimation result. a second delivery step of delivering to the terminal device ;
The early damage comprehension server and the second early damage comprehension server do not depend on each other and operate independently.
Early damage detection method with redundancy. a second measurement step in which one or more second seismometers measure the seismic motion at an observation point provided on the ground surface or in the ground away from the structure;
When the notification is not delivered by the early damage assessment server for estimating damage to the structure based on the seismic motion at the observation point provided in the structure, the second early damage assessment server receives the second a second distribution step of estimating damage to the structure based on measurement data of a seismometer, and distributing a second notification including the estimation result to a terminal device. a measurement step in which one or more seismometers measure seismic motion at observation points provided in the structure;
a second measurement step in which one or more second seismometers measure seismic motion at an observation point provided on the ground surface or in the ground away from the structure;
The early damage detection server
a delivery step of estimating damage to the structure based on the measurement data of the seismometer and delivering a notification including the estimation result to a user's terminal device;
A second distribution for estimating damage to the structure based on the measurement data of the second seismometer without using the data of the seismometer and distributing a second notification including the estimation result to the terminal device. and a Redundant Early Damage Grasp Method. A program for causing a computer to execute the method according to any one of claims 11 to 13.

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