JP5113475B2 - Seismic intensity prediction system for buildings based on earthquake information - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a building seismic intensity prediction system based on earthquake information that attempts to minimize earthquake damage by, for example, notifying an early earthquake every floor in a predetermined building based on an emergency earthquake warning. .

Conventionally, the damage estimation method of earthquake damage prediction system that can estimate earthquake damage and impact of limited areas such as small areas in a short time from the observation information of observation means installed in that area. Is known (see Patent Document 1).
JP 2003-161783 A

  However, in the conventional prediction system, the conventional earthquake early warning is equipped with a terminal device, personal computer, etc. for receiving alarms and analyzing earthquake information in the target building, and each building position information, ground amplification degree It is common to enter data. Receiving earthquakes from all over Japan distributed from the Japan Meteorological Agency to the terminal device, computer, etc., and calculating each predicted arrival time and predicted seismic intensity individually from the distance between the earthquake and the target building and the ground amplification characteristics. However, only alarms that are likely to have an impact are issued.

  However, an analysis program and maintenance are required for each terminal device, personal computer, and the like in the target building. Also, with regard to the arrival time and seismic intensity to the target building, conventionally, it was predicted that the earthquake would spread uniformly in a concentric circle, and the seismic intensity predicted from the ground amplification characteristics is the seismic intensity of the ground surface and the vibration characteristics for each building Is not considered, and the ground amplification is generally data divided by a mesh of 0.5 km-1 km, and the prediction accuracy of seismic intensity is not high. Therefore, even if trying to increase the accuracy of the predicted seismic intensity, the time required for analysis will increase, so if the analysis calculation was performed after the earthquake occurred, the most important “emergency” in emergency earthquake warnings could not be secured There are challenges. Therefore, the seismic intensity prediction system for buildings based on earthquake information according to the present invention has been proposed in order to solve such problems.

  The gist for solving the above-described problems of the building seismic intensity prediction system based on earthquake information according to the present invention is achieved by connecting to a distribution means for distributing emergency earthquake warning data from the Japan Meteorological Agency and to a predetermined network. It is the result of the response analysis predicted by the type and magnitude of the desired earthquake on each floor in the building that is connected to the on-site earthquake early warning server and electrically connected to the on-site earthquake early warning server and wants to convey earthquake information A storage device that stores seismic intensity data as a vibration characteristic database for each building in advance by an input device and stores an alarm signal transmitted from the local earthquake early warning server via the predetermined network and issues an alarm. The alarm display terminal provided for each desired floor in each building and the on-site earthquake early warning server When earthquake data of the earthquake early warning is distributed and received by a program stored in a processing device, the seismic intensity data for each desired floor in each building is taken into a central processing unit from the vibration characteristic database of the storage device , Comparing the distributed seismic data with the seismic intensity data, and calculating the predicted seismic intensity and predicted arrival time of the foundation of the building calculated from the seismic pattern of the seismic data, and the base of the base corresponding to the seismic pattern A seismic alarm program for transmitting the predicted seismic intensity of each floor of the building to be verified from the predicted seismic intensity from the on-site earthquake early warning server to the alarm display terminal for each floor of the building via the network. is there.

  The alarm display terminal is electrically connected to the control device of the vibration isolator, and when the predicted seismic intensity is higher than the threshold seismic intensity, a predetermined control signal is sent from the local earthquake early warning server to the alarm display terminal. Via the control device.

  According to the seismic intensity prediction system for buildings based on earthquake information of the present invention, when an earthquake occurs, the predicted seismic intensity on each floor of the target building is analyzed in advance according to the type and magnitude of the earthquake based on the earthquake early warning of the Japan Meteorological Agency. Since the seismic intensity data from the existing seismic intensity characteristic beta base can be collated, the seismic intensity can be predicted instantaneously with high accuracy. As a result, when a building is a production facility, a hospital, etc. and has a vibration control device, it is possible to predict with high accuracy and stop important devices and equipment, or temporarily suspend medical activities such as surgery at the hospital. Or switch to emergency power. Furthermore, a seismic intensity that does not adversely affect the function also prevents excessive reactions such as stopping the production line or stopping medical practice.

  The alarm display terminal is electrically connected to a control device of the vibration isolator, and when the predicted seismic intensity is higher than the threshold seismic intensity, a predetermined control signal is sent from the local earthquake early warning server to the alarm display terminal. Therefore, it is possible to automatically stop the operation of an important vibration isolator or the like or to perform a safe operation.

  As shown in FIG. 1, a building seismic intensity prediction system 1 based on earthquake information according to the present invention is a distributor (for example, a meteorological service support center) serving as a distribution means for distributing emergency earthquake warning data from the Japan Meteorological Agency 2. ) There is a site earthquake early warning server 6 connected to the server 3 by the dedicated line 4 and connected to a predetermined network 5.

  The earthquake early warning is earthquake data provided by the Japan Meteorological Agency 2 such as the occurrence time, occurrence position, depth, and magnitude of the earthquake. Specifically, this earthquake data is distributed on a dedicated line 4 from a server of a weather business support center which is a distributor 3.

  As the position data of the building 8 that is electrically connected to the site earthquake early warning server 6 and to transmit the earthquake information, the ground amplification data in the building 8, the seismic intensity data of the predicted seismic intensity for each floor, and the vibration characteristic database Is stored in advance by an input device. This storage device 7 is incorporated in a part of the site earthquake early warning server 6.

  The building 8 is, for example, a medium to high-rise building, a hospital, or the like, and the position data is data related to the IP address, longitude, and latitude of the building 8, and the ground amplification data is a place where the building 8 exists. This is the data of the seismic amplification coefficient determined by the characteristics of the strata.

  Regarding the predicted seismic intensity for each floor of the building 8, it is necessary to analyze the characteristics of each building due to the earthquake in advance. That is, the earthquake patterns are classified into two types, for example, a direct type and a plate type (see FIG. 2, earthquake A is a plate type, and earthquake B is a direct type), and site waves created with a seismic intensity equivalent to 6 ( Simulated waves) are earthquake A and earthquake B, and for example, an observed wave of an earthquake observed in Tokyo with a seismic intensity of less than 5 is earthquake C (measured seismic intensity at the observation point is 3.4, epicenter distance is about 30 km).

  As model buildings, there are buildings 1, 2, and 3 of different scales on the same ground. Here, building 1 is a production facility with a steel-framed fifth floor, no basement, and a seismic isolation structure. Assuming that the building is a steel-framed 37th floor, 4th basement, and a seismic control structure, and that the building 3 is an apartment house, the 30th floor of an RC structure, and the 1st basement, the elastic-plastic vibration analysis program RESP-M / II is used to model the building into a mass point model using an equivalent shear spring.

  As an example of the response analysis results, a time history of response acceleration on the fifth floor of the building 1 is shown in FIG. This building 1 is a base-isolated building, has a long period component, maximum acceleration is very small compared to the input, and the maximum response acceleration for earthquakes A and B is comparable. The difference in response acceleration is small between the difference between C and earthquakes A and B and the difference between earthquake C and earthquakes A and B in response acceleration. From this, it can be seen that the vibration characteristics of the building have a greater influence on the building than the type of earthquake.

  FIG. 4 shows the distribution in the height direction of the maximum response acceleration in each of the buildings 1, 2, 3, and FIG. 5 shows the distribution in the height direction of the maximum response speed in each of the buildings 1, 2, 3. Looking at this, there is a tendency that it differs depending on the type of building. Compared with the building 1, the response values of the buildings 2 and 3 are different depending on the type of earthquake.

Furthermore, for the representative floors in each building 1, 2 and 3, the result of calculating the measured seismic intensity using the response results and the ratio (magnification) between the measured seismic intensity of the foundation of the building and the measured seismic intensity of each floor are as follows: It shows in Table 1.

  As described above, for each building, the measured seismic intensity is preliminarily analyzed (parameter study) according to the characteristics of the building, the type of earthquake, and the magnitude, and the vibration characteristics for each building are stored in the storage device 7 as a database. Let build. Thereby, the predicted seismic intensity for each part of the building 8 can be instantaneously predicted with high accuracy by the emergency earthquake warning from the Japan Meteorological Agency 2.

  The alarm signal transmitted from the local earthquake early warning server 6 is received at the building 5 where the earthquake information is to be transmitted via the network 5, for example, the in-house network or the Internet VPN (Virtual Private Network) and the hub 10. In addition, there is an alarm display terminal 9 that issues an alarm.

  This terminal 9 is not particularly installed with a program, and is connected to the local earthquake early warning server 6 in two ways via an in-house network or the Internet, is always turned on, and receives an alarm signal. In this way, a warning is issued. The alarm by the alarm display terminal 9 is a known means, for example, blinking of light by light, warning by sound, display of character information by LED or the like. Further, as shown in FIG. 1, the alarm display terminal 9 is electrically connected to a vibration control device 11 such as important equipment, precision equipment, or the like, an operating room 11a, a dangerous object 11b, or a control device or broadcasting equipment. A control signal wiring 12 to be connected is connected.

  Further, when the data of the earthquake early warning is distributed and received by the program stored in the central processing unit of the site earthquake early warning server 6, the location data of the predetermined building 8 and the data The ground amplification data in a given building 8 and the seismic intensity data for each part of the building 8 created in the vibration characteristic database are taken into the central processing unit, collated based on the distributed emergency earthquake warning data, and the earthquake pattern The predicted seismic intensity of the foundation of the building and the estimated surplus time are calculated by a predetermined formula, and similarly, the predicted seismic intensity of each part of the building 8 based on the predicted seismic intensity of the foundation of the building according to the earthquake pattern Is obtained from the seismic intensity data, and when the predicted seismic intensity of the part of the building 8 exceeds a threshold (for example, seismic intensity 4), And stop signal for the control device in the broadcast signal and Iyafu equipment, there is an earthquake alarm program to transmit from the site earthquake bulletin server 6 to the predetermined network 5 (not shown).

  When an earthquake actually occurs by the building seismic intensity prediction system 1 based on the seismic information having the above-described configuration, as shown in FIG. In comparison with the database, the time until the earthquake reaches the foundation of each building 8 and the predicted seismic intensity are measured by the earthquake warning program of the on-site earthquake early warning server 6.

  Thereafter, the earthquake warning program collates the predicted seismic intensity at the foundation of the building 8 corresponding to the earthquake pattern and the seismic intensity data to obtain the predicted seismic intensity for each part of the building 8 corresponding to the estimated seismic intensity of the foundation. Ask. The predicted seismic intensity is provided in each part of the building 8 via the predetermined network 5 for each part of the building 8 that exceeds a threshold, for example, the predicted seismic intensity is 4 or 5. An alarm signal is transmitted to the alarm display terminal 9. An alarm is issued from the alarm display terminal 9 by an alarm device, and control signals such as operation stop and emergency inspection are transmitted to the control device of the vibration isolator 11 via the control signal wiring 12.

  With such a transmission system 1, for example, if there is a margin of about 10 seconds before the arrival of the S-wave earthquake of the earthquake that has occurred, for example, in the building 8, it is important to secure human safety. It is possible to prevent physical damage to a minimum, such as maintaining the function of the device, further maintaining the function of the medical device in the operating room, and ensuring the safety of dangerous goods.

1 is a schematic configuration diagram of a building seismic intensity prediction system 1 based on earthquake information according to the present invention. It is explanatory drawing (A) which shows the example of the input ground motion for every earthquake pattern, and the figure (B) which shows the origin of the assumed earthquake. It is explanatory drawing which shows the time history of the response acceleration of the building 1 with respect to the input earthquake motion shown in FIG. It is explanatory drawing which shows the response acceleration distribution of the height direction of the building in the same building 1,2,3. It is explanatory drawing which shows the response speed distribution of the height direction of the building in the same building 1,2,3. It is a flowchart of the seismic intensity prediction system 1 of the building by the earthquake information which concerns on this invention.

Explanation of symbols

1 Seismic intensity prediction system for buildings based on earthquake information
2 Japan Meteorological Agency,
3 distributors,
4 Dedicated line,
5 network,
6 Earthquake Early Warning Server,
7 storage device,
8 Building,
9 Alarm display terminal, 10 Hub,
11 Construction equipment, 11a Operating room,
11b Dangerous goods,
12 Wiring for control signal.

Claims (2)

An on-site earthquake early warning server connected to a distribution means for delivering emergency earthquake early warning data from the Japan Meteorological Agency and connected to a predetermined network;
Seismic intensity data, which is the result of response analysis predicted by the type and magnitude of earthquakes at each desired floor in a building that is electrically connected to the on-site earthquake bulletin server and wants to transmit earthquake information, is a vibration characteristic database for each building. A storage device that is pre-input and stored as an input device,
An alarm display terminal provided for each desired floor in each building so as to receive an alarm signal transmitted from the site earthquake early warning server via the predetermined network and issue an alarm;
In the program stored in the central processing unit of the site earthquake early warning server, when the earthquake data of the emergency earthquake early warning is distributed and received, the vibration characteristics database of the storage unit is used for each desired floor in each building. The seismic intensity data is taken into a central processing unit, the distributed earthquake data and the seismic intensity data are collated, and the predicted seismic intensity and predicted arrival time of the foundation of the building calculated from the earthquake pattern of the seismic data, The predicted seismic intensity of each floor of the building that is collated from the predicted seismic intensity of the foundation corresponding to the pattern is transmitted from the site earthquake early warning server to the warning display terminal for each floor of the building via the network. Consisting of an earthquake warning program,
A seismic intensity prediction system for buildings based on earthquake information. The alarm display terminal is electrically connected to the control device of the vibration isolation device. When the predicted seismic intensity is higher than the threshold seismic intensity, a predetermined control signal is sent from the local earthquake early warning server via the alarm display terminal. Being transmitted to the control device;
The seismic intensity prediction system for buildings based on earthquake information according to claim 1.

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