Earthquake early warning method, device and equipment applied to building and storage medium

Abstract

The invention discloses an earthquake early warning method, device and equipment applied to a building and a storage medium, and relates to the technical field of building safety and earthquake monitoring, and the health state level of a target building is determined according to a monitoring instrument installed on the target building; after an earthquake occurs, calculating and predicting the earthquake intensity according to the magnitude and the epicentral distance; and determining an earthquake early warning level according to the predicted earthquake intensity, the earthquake fortification intensity of the target building and the health state level of the target building, and sending corresponding early warning information according to the earthquake early warning level. According to the embodiment of the invention, the degree of damage possibly caused to the target building by the earthquake can be evaluated by combining the health state grade of the target building, the predicted earthquake intensity and the earthquake fortification intensity, so that the early warning grade is determined, the corresponding early warning information is sent out, and the applicability of the imminent earthquake early warning information is improved.

Description

Technical Field

[0001] The present invention relates to the field of earthquake monitoring technology, and in particular to an earthquake early warning method, device, equipment and storage medium applied to buildings. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] When disturbed by the external environment, buildings may have various safety problems, which in turn threaten the life and property of building users. Therefore, it is of great significance to monitor the safety of buildings. Earthquake disasters, as a large-scale natural disaster, can easily cause buildings to crack, tilt or even collapse. Therefore, it is particularly important to monitor and warn of earthquake disasters in buildings. However, the existing earthquake warning only obtains earthquake information from the seismic network and simply forwards it. It cannot be combined with the actual situation of the building for warning, which is not practical. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an earthquake early warning method, device, equipment and storage medium applied to buildings, which can send targeted early warning information to the target building after an earthquake occurs, combined with the specific health status of the target building, to prompt relevant personnel to adopt corresponding response strategies, and has stronger practicality.

[0005] To achieve the above object, an embodiment of the present invention provides an earthquake early warning method applied to a building, comprising:

[0006] Acquiring monitoring data of the target building from a monitoring instrument installed on the target building;

[0007] Determining the health status level of the target building according to the monitoring data of the target building;

[0008] After an earthquake occurs, obtain the magnitude and epicenter distance;

[0009] Calculating the predicted earthquake intensity according to the magnitude and the epicenter distance;

[0010] An earthquake warning level is determined based on the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building, and corresponding warning information is issued based on the earthquake warning level.

[0011] As an improvement of the above solution, the method further includes:

[0012] After an earthquake occurs, the maximum possible aftershock magnitude is calculated based on the preset aftershock warning model;

[0013] Aftershock risk information is determined based on the maximum possible aftershock magnitude and the current health status level of the target building.

[0014] As an improvement of the above solution, the aftershock early warning model is shown in the following formula:

[0015] lg(N)=aM+b

[0016] Among them, M represents the magnitude; N represents the number of aftershocks with magnitude greater than or equal to M; a and b represent coefficients, and both a and b are constants.

[0017] As an improvement of the above solution, the monitoring data of the target building includes deformation parameters and vibration data of the target building, wherein the deformation parameters include at least one of horizontal displacement, settlement and tilt. Then, determining the health status level of the target building according to the monitoring data of the target building includes:

[0018] Calculating the modal parameters of the target building according to the vibration data; wherein the modal parameters include at least one of natural frequency, vibration mode and modal damping;

[0019] According to the modal parameters, a dynamic fingerprint method is used to identify the structural damage of the target building;

[0020] According to the attribute data of the target building, the deformation parameters of the target building and the structural damage of the target building, a health factor of the target building is calculated using a pre-constructed judgment matrix; wherein the attribute data includes service life and daily load;

[0021] The health status grade of the target building is determined according to the health coefficient and a preset health coefficient total score.

[0022] As an improvement of the above solution, the judgment matrix is ​​constructed in the following way:

[0023] Taking attribute data, deformation parameters and structural damage as evaluation indicators of building health status, the hierarchical analysis method is used to construct the judgment matrix composed of weight values ​​of each evaluation indicator.

[0024] As an improvement of the above scheme, the health status level includes four levels: healthy, good, poor and extremely poor. Then, determining the earthquake warning level according to the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building includes:

[0025] When the difference between the seismic fortification intensity and the predicted earthquake intensity is not greater than a first preset value, determining that the earthquake warning level is level one;

[0026] When the difference between the seismic fortification intensity and the predicted earthquake intensity is greater than the first preset value and not greater than the second preset value: if the health status level of the target building is healthy, the earthquake warning level is determined to be level 2; if the health status level of the target building is not healthy, the earthquake warning level is determined to be level 1;

[0027] When the difference between the seismic fortification intensity and the predicted seismic intensity is greater than the second preset value and not greater than the third preset value, and the predicted seismic intensity is greater than the preset seismic intensity threshold: if the health status level of the target building is healthy, the earthquake warning level is determined to be level three; if the health status level of the target building is good or poor, the earthquake warning level is determined to be level two; if the health status level of the target building is extremely poor, the earthquake warning level is determined to be level one;

[0028] When the difference between the seismic fortification intensity and the predicted seismic intensity is greater than the third preset value, or when the predicted seismic intensity is not greater than the preset seismic intensity threshold: if the health status level of the target building is healthy or good, the earthquake warning level is determined to be level three; if the health status level of the target building is poor, the earthquake warning level is determined to be level two; if the health status level of the target building is extremely poor, the earthquake warning level is determined to be level one;

[0029] The first preset value is smaller than the second preset value, and the second preset value is smaller than the third preset value.

[0030] As an improvement of the above solution, the issuing of corresponding warning information according to the earthquake warning level includes:

[0031] When the earthquake warning level is level one, the alarm is controlled to emit a high-decibel alarm and perform an earthquake countdown;

[0032] When the earthquake warning level is level 2, the alarm is controlled to emit a low-decibel alarm sound and perform an earthquake countdown; wherein the sound level of the high-decibel alarm sound is higher than the sound level of the low-decibel alarm sound;

[0033] When the earthquake warning level is level three, the alarm is not controlled to sound an alarm, but an earthquake countdown is performed.

[0034] To achieve the above object, an embodiment of the present invention further provides an earthquake early warning device applied to a building, comprising:

[0035] Earthquake information acquisition module, used to obtain the magnitude and epicenter distance after an earthquake occurs;

[0036] An earthquake intensity prediction module, used to calculate the predicted earthquake intensity according to the magnitude and the epicenter distance;

[0037] A building information acquisition module, used to acquire monitoring data of the target building from monitoring instruments installed on the target building;

[0038] A health status assessment module, used to determine the health status level of the target building according to the monitoring data of the target building;

[0039] The pre-earthquake warning module is used to determine the earthquake warning level according to the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building, and to issue corresponding warning information according to the earthquake warning level.

[0040] To achieve the above-mentioned objectives, an embodiment of the present invention further provides an earthquake early warning device applied to a building, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements the earthquake early warning method applied to a building as described in any of the above embodiments.

[0041] To achieve the above-mentioned purpose, an embodiment of the present invention further provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the earthquake early warning method applied to buildings as described in any of the above embodiments.

[0042] Compared with the prior art, the earthquake early warning method, device, equipment and storage medium applied to buildings provided by the embodiments of the present invention obtain the magnitude and epicenter distance after an earthquake occurs; calculate the predicted earthquake intensity based on the magnitude and the epicenter distance; obtain the monitoring data of the target building from the monitoring instrument installed on the target building; determine the health status level of the target building based on the monitoring data of the target building; determine the earthquake early warning level based on the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building, and issue corresponding early warning information based on the earthquake early warning level. The embodiments of the present invention can analyze the health status level of the target building based on the monitoring data of the target building, and evaluate the degree of damage that the earthquake may cause to the target building in combination with the health status level, the predicted earthquake intensity and the seismic fortification intensity, so as to determine the early warning level and issue corresponding early warning information, thereby improving the applicability of the pre-earthquake early warning information. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a flow chart of an earthquake early warning method applied to buildings provided by an embodiment of the present invention;

[0044] Figure 2 It is a schematic diagram of the deployment of monitoring instruments provided by an embodiment of the present invention;

[0045] Figure 3 is a schematic diagram of calculating the maximum possible aftershock magnitude provided by an embodiment of the present invention;

[0046] Figure 4 It is a structural schematic diagram of an earthquake early warning device applied to a building provided by an embodiment of the present invention;

[0047] Figure 5 It is a structural schematic diagram of an earthquake early warning device applied to a building provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] See also Figure 1 , is a flow chart of an earthquake early warning method applied to a building provided by an embodiment of the present invention, comprising steps S1 to S5:

[0050] S1. Acquire monitoring data of the target building from a monitoring instrument installed on the target building;

[0051] S2. Determine the health status level of the target building according to the monitoring data of the target building;

[0052] S3. After an earthquake occurs, obtain the magnitude and epicenter distance;

[0053] S4. Calculating the predicted earthquake intensity according to the magnitude and the epicenter distance;

[0054] S5. Determine an earthquake warning level according to the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building, and issue corresponding warning information according to the earthquake warning level.

[0055] It is worth noting that the method described in the embodiment of the present invention can be applied to a variety of buildings, especially super-high-rise, large-span, and large-volume buildings.

[0056] Exemplarily, steps S1 and S2 may be performed before an earthquake occurs. For example, monitoring data may be acquired regularly and health status level assessment may be performed. Furthermore, in step S1, the monitoring instrument may include a seismograph or a strong-motion seismograph, an accelerometer, and a GNSS (Global Navigation Satellite System) receiver. Furthermore, since seismographs and strong-motion seismographs are relatively expensive, a highly sensitive broadband three-axis accelerometer may be used instead of a seismograph or a strong-motion seismograph. Further, see Figure 2 , is a schematic diagram of the deployment of monitoring instruments provided by an embodiment of the present invention, comprising Figure 2 It can be seen that the seismometer or strong earthquake meter is pre-deployed at the bottom of the target building, the acceleration sensor is pre-deployed at the key parts of the structure, and the GNSS receiver is pre-deployed at the top of the target building or on the surface of the target building (because the satellite signal on the surface of the building is good).

[0057] Further, in step S2, the health status of the target building is analyzed by combining the monitoring data collected by the monitoring instrument and the attribute data of the target building (such as service life and daily load), and characterized by the health status level. Exemplarily, the health status level includes four levels: healthy, good, poor and extremely poor. It can be understood that the impact of earthquake disasters on buildings is not only related to the intensity of the earthquake, but also to the health status of the building itself. For example, for the same earthquake disaster, buildings with longer service life and more serious structural damage are more likely to have safety problems. Therefore, before performing an earthquake early warning, the embodiment of the present invention also evaluates the health status of the target building, which can be used to subsequently evaluate the degree of damage caused by the earthquake to the target building in combination with information such as the earthquake intensity, so as to determine the early warning level, thereby providing early warning information with a higher degree of matching.

[0058] It is understandable that, since earthquakes, especially destructive earthquakes, are random and sudden, the reliability of predicting earthquake risks before an earthquake occurs is insufficient, but after an earthquake occurs, it takes a certain amount of time for seismic waves to propagate, so it is more feasible to monitor and warn of earthquake risks in the pre-earthquake stage. Therefore, in step S3, after an earthquake is detected, earthquake information is obtained. Exemplarily, earthquake information can be obtained through a national or regional seismic network, including the time of the earthquake, magnitude, epicenter location, and focal depth, and the epicenter distance is further calculated based on the location of the target building and the epicenter location.

[0059] It is understandable that earthquake intensity refers to the degree to which the ground and various buildings in a certain area are affected by an earthquake. Generally speaking, the closer to the epicenter, the greater the impact and the greater the earthquake intensity; the farther away from the epicenter, the less impact and the smaller the earthquake intensity. For example, in the 1976 Tangshan earthquake, the earthquake intensity in the epicenter of Tangshan was 11 degrees, the earthquake intensity in Tianjin was 8 degrees, the earthquake intensity in Beijing was 6 degrees, and the earthquake intensity in Shijiazhuang was 5 degrees.

[0060] It is worth noting that the earthquake intensity can be understood as the earthquake intensity of the area where the target building is located. For example, the earthquake intensity can be predicted using an empirical model, and the empirical model is shown in formula (1):

[0061] I=A+BM+Clg(R+R0) (1)

[0062] Among them, I represents earthquake intensity; R represents the distance from the epicenter; M represents the magnitude; A, B, C and R0 represent regression coefficients; lg() represents the logarithmic function with base 10.

[0063] Exemplarily, the regression coefficients A, B, C and R0 can be calculated by historical statistics. Specifically, the statistical range is defined with the location of the target building as the center and the preset distance as the radius. For example, the preset distance can be 600km (kilometre), and the number of earthquakes counted is not less than 100. If there is a lack of earthquakes above magnitude 6 in the statistical range, then at least 2 earthquakes above magnitude 6 and below magnitude 7 and at least 1 earthquake above magnitude 7 are selected, and at least 3 samples are selected for each historical earthquake; finally, the weighted least squares method is used to fit the regression coefficients A, B, C and R0, and the higher the magnitude of the sample, the greater the weight.

[0064] Exemplarily, between steps S4 and S5, step S451 may also be included:

[0065] Step S451, determine whether the magnitude is greater than the preset warning magnitude threshold, and determine whether the epicenter distance is less than the preset warning epicenter distance threshold; if the magnitude is greater than the preset warning magnitude threshold, and the epicenter distance is less than the preset warning epicenter distance threshold, execute step S5, otherwise, do not execute subsequent steps.

[0066] Exemplarily, the warning magnitude threshold can be 3, and the epicenter distance threshold can be 600km. Exemplarily, in the pre-earthquake stage, after receiving the earthquake information pushed by the seismic network center, first determine whether the magnitude is greater than the warning magnitude threshold, such as whether it exceeds 3. When the magnitude is below 3, no earthquake warning is performed, that is, the subsequent step S5 is not executed. When the magnitude exceeds 3, the epicenter distance is calculated based on the location of the target building and the epicenter position, and it is determined whether the epicenter distance is less than the preset warning epicenter distance threshold, such as whether it is less than 600km. When the epicenter distance is greater than or equal to 600km, since the epicenter position is far from the target building, the impact of this earthquake on the target building is small, so no earthquake warning is performed. When the epicenter distance is less than 600km, the subsequent step S5 is executed to perform earthquake warning. Exemplarily, when the regression coefficients A, B, C and R0 are calculated using the historical statistical method above, the epicenter distance threshold can be used as the radius to define the statistical range.

[0067] Exemplarily, the early warning information in step S5 can represent different early warning levels through alarm sounds of different sound levels. For example, the higher the decibel, the higher the early warning level, the more serious the damage to the building, and the higher the degree of danger; Exemplarily, the early warning information can also be a broadcast message, reporting the degree of damage that may occur to the target building corresponding to the early warning level, and the corresponding response strategy. Exemplarily, the early warning information can also include earthquake travel time. Exemplarily, the earthquake travel time is the time it takes for the P wave (primary wave, longitudinal wave) to reach the target building, and the earthquake travel time can be calculated based on the regional three-dimensional velocity model, the focal depth and the epicenter distance, wherein the regional three-dimensional velocity model can refer to the global crust model Crust or the unified seismic tomography model of the continental lithosphere USTClitho (Unified Seismic Tomography Models for Continental China Lithosphere).

[0068] Compared with the prior art, the embodiment of the present invention can analyze the health status level of the target building according to the monitoring data of the target building, and evaluate the degree of damage that the earthquake may cause to the target building in combination with the health status level, predicted earthquake intensity and seismic fortification intensity, so as to determine the warning level and issue corresponding warning information, thereby improving the applicability of pre-earthquake warning information.

[0069] As an optional implementation manner, the monitoring data of the target building includes deformation parameters and vibration data of the target building, wherein the deformation parameters include at least one of horizontal displacement, settlement and tilt. Then, determining the health status level of the target building according to the monitoring data of the target building includes:

[0070] Calculating the modal parameters of the target building according to the vibration data; wherein the modal parameters include at least one of natural frequency, vibration mode and modal damping;

[0071] According to the modal parameters, a dynamic fingerprint method is used to identify the structural damage of the target building;

[0072] According to the attribute data of the target building, the deformation parameters of the target building and the structural damage of the target building, a health factor of the target building is calculated using a pre-constructed judgment matrix; wherein the attribute data includes service life and daily load;

[0073] The health status grade of the target building is determined according to the health coefficient and a preset health coefficient total score.

[0074] For example, the deformation parameters of the target building, mainly including horizontal displacement, settlement and tilt, etc., can be calculated by a GNSS receiver; the modal parameters of the target building, including natural frequency, vibration mode and modal damping, etc., can be calculated by vibration data recorded by a seismograph or a strong earthquake meter or an accelerometer, and structural damage can be identified by the dynamic fingerprint method.

[0075] Furthermore, the attribute data, deformation parameters and structural damage are combined into the health assessment index of the building, and the hierarchical analysis method is used to construct the judgment matrix; the health coefficient of the target building is calculated according to the attribute data, deformation parameters and structural damage of the target building, so as to determine the health status level of the target building according to the health coefficient.

[0076] Exemplarily, the total score of the health coefficient is 100 points. The health status level of the building is divided into four levels: healthy, good, poor and extremely poor according to the health coefficient. When the health coefficient is not less than 90 points, the health status level is healthy; when the health coefficient is between 80 and 89 points, the health status level is good; when the health coefficient is between 60 and 79 points, the health status level is poor; when the health coefficient is less than 60 points, the health status level is extremely poor.

[0077] As an optional implementation manner, the judgment matrix is ​​constructed in the following manner:

[0078] Taking attribute data, deformation parameters and structural damage as evaluation indicators of building health status, the hierarchical analysis method is used to construct the judgment matrix composed of weight values ​​of each evaluation indicator.

[0079] As one optional implementation manner, the health status level includes four levels: healthy, good, poor and extremely poor. Then, determining the earthquake warning level according to the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building includes:

[0080] When the difference between the seismic fortification intensity and the predicted earthquake intensity is not greater than a first preset value, determining that the earthquake warning level is level one;

[0081] When the difference between the seismic fortification intensity and the predicted earthquake intensity is greater than the first preset value and not greater than the second preset value: if the health status level of the target building is healthy, the earthquake warning level is determined to be level 2; if the health status level of the target building is not healthy, the earthquake warning level is determined to be level 1;

[0082] When the difference between the seismic fortification intensity and the predicted seismic intensity is greater than the second preset value and not greater than the third preset value, and the predicted seismic intensity is greater than the preset seismic intensity threshold: if the health status level of the target building is healthy, the earthquake warning level is determined to be level three; if the health status level of the target building is good or poor, the earthquake warning level is determined to be level two; if the health status level of the target building is extremely poor, the earthquake warning level is determined to be level one;

[0083] When the difference between the seismic fortification intensity and the predicted seismic intensity is greater than the third preset value, or when the predicted seismic intensity is not greater than the preset seismic intensity threshold: if the health status level of the target building is healthy or good, the earthquake warning level is determined to be level three; if the health status level of the target building is poor, the earthquake warning level is determined to be level two; if the health status level of the target building is extremely poor, the earthquake warning level is determined to be level one;

[0084] The first preset value is smaller than the second preset value, and the second preset value is smaller than the third preset value.

[0085] It is worth noting that the "difference between the seismic fortification intensity and the predicted earthquake intensity" means "the value obtained by subtracting the predicted earthquake intensity from the seismic fortification intensity", and the levels of each warning level are: level 1> level 2> level 3, among which the higher the warning level, the more serious the damage to the building and the higher the degree of danger.

[0086] Exemplarily, the first preset value is 1, the second preset value is 3, the third preset value is 5, and the earthquake intensity threshold is 3.

[0087] Table 1 Earthquake warning level determination table

[0088]

[0089] Referring to Table 1, which is the earthquake early warning level determination table provided by the embodiments of the present invention. In Table 1, I represents the predicted earthquake intensity, and L represents the seismic fortification intensity of the target building. Specifically, when I≥L - 1, that is, when L - I≤1, the predicted earthquake intensity is close to or exceeds the seismic fortification intensity, and the earthquake will threaten the safety of the target building. Therefore, the earthquake early warning level is level one. When the health status level of the target building is healthy, it indicates that the structure of the target building is good. When L - 1>I≥L - 3, that is, when 1<L - I≤3, the predicted earthquake intensity is close to the seismic fortification intensity and may cause slight damage to the target building. Therefore, the earthquake early warning level is reduced to level two. When I<L - 3, that is, L - I>3, the predicted earthquake intensity is much less than the seismic fortification intensity and will probably not affect the structural safety of the target building. Therefore, the earthquake early warning level is reduced to level three. When the health status level of the target building is good or poor, there are varying degrees of potential safety hazards in the target building itself. When L - 1>I≥L - 3, that is, when 1<L - I≤3, the predicted earthquake intensity is close to the seismic fortification intensity and may threaten the structural safety of the target building. Therefore, the earthquake early warning level is level one. When I<L - 3, that is, when L - I>3, the predicted earthquake intensity is much less than the seismic fortification intensity. If I<3 and the health status level is good, due to the small predicted earthquake intensity, it will probably not affect the structural safety of the target building. Therefore, the earthquake early warning level is reduced to level three. If I>3 or the health status level is poor, due to the large predicted earthquake intensity or potential hazards in the building itself, the earthquake may cause slight damage to the building. Therefore, the earthquake early warning level is level two. When the health status level of the target building is extremely poor, since the health status of the target building itself is already extremely poor, any disturbance may cause structural safety problems of the building. Therefore, the earthquake early warning level is always level one.

[0090] As one of the optional implementation manners, the sending of corresponding warning information according to the earthquake early warning level includes:

[0091] When the earthquake early warning level is level one, controlling the alarm to emit a high - decibel alarm sound and performing earthquake countdown;

[0092] When the earthquake early warning level is level two, controlling the alarm to emit a low - decibel alarm sound and performing earthquake countdown; wherein, the sound level of the high - decibel alarm sound is higher than that of the low - decibel alarm sound;

[0093] When the earthquake early warning level is level three, not controlling the alarm to emit an alarm sound, but performing earthquake countdown.

[0094] Exemplarily, the sound level of the high - decibel alarm sound can be 120 decibels, and the sound level of the low - decibel alarm sound can be 80 decibels.

[0095] It is worth mentioning that aftershocks often occur frequently for a period of time after the main shock. In most cases, the intensity of aftershock activity is related to the size of the main shock. The larger the main shock, the stronger the aftershock activity and the more frequent it will be. Moreover, the intensity and frequency of aftershock activity will gradually decay over time.

[0096] However, the prior art does not consider the threat that aftershocks may pose to the safety of building structures after an earthquake. In order to provide a higher level of protection and guard against possible aftershocks, in some embodiments of the present invention, in addition to the above-mentioned pre-earthquake warning, aftershock risk assessment is also performed, that is, the maximum possible aftershock magnitude is assessed and its possible impact on the safety of the target building structure.

[0097] As an optional implementation manner, the method further includes:

[0098] After an earthquake occurs, the maximum possible aftershock magnitude is calculated based on the preset aftershock warning model;

[0099] Aftershock risk information is issued based on the maximum possible aftershock magnitude and the current health status level of the target building.

[0100] For example, before conducting an aftershock risk assessment, it is also possible to determine whether the current situation simultaneously meets the following two aftershock risk assessment conditions: 1. An earthquake of magnitude 5 or above has occurred within 100 km of the target building in this earthquake; 2. The last earthquake of magnitude 5 or above occurred in the area near the target building less than 1 year ago.

[0101] It is worth noting that when multiple earthquakes meet the aftershock risk assessment conditions, the maximum possible aftershock magnitude corresponding to each earthquake is calculated, the largest value is selected as the final maximum possible aftershock magnitude, and a risk assessment is performed.

[0102] Exemplarily, the aftershock risk information may include the maximum possible aftershock magnitude and its possible impact on the structural safety of the target building.

[0103] As an optional implementation, the aftershock early warning model is shown in the following formula:

[0104] lg(N)=aM+b (2)

[0105] Among them, M represents the magnitude; N represents the number of aftershocks with a magnitude greater than or equal to M (also called the cumulative number of aftershocks); a and b represent coefficients, and both a and b are constants.

[0106] Before using formula (2) to predict the maximum possible aftershock magnitude, it is necessary to collect statistics on the aftershocks that have occurred in the area where the target building is located, and calculate the coefficients a and b in formula (2) based on the aftershock statistics.

[0107] Specifically, an earthquake with a magnitude of 5 or above that occurred within 100 km of the target building in the past year is considered the main shock. The catalog of aftershocks with a magnitude of 2 or above from the main shock to the current period published by the seismic network center is collected (earthquakes below magnitude 2 are relatively weak, and the detection data of the seismic network may be incomplete, so they are not counted). The aftershock number threshold N is set. k , and set N k Not less than 100, used to ensure the reliability of statistical results. k When the maximum possible aftershock magnitude is predicted to be the main shock magnitude minus two, when the number of aftershock catalogs is greater than or equal to N k When the number of aftershocks is greater than or equal to 2, N3, N4, N5, etc., N2 represents the number of aftershocks with a magnitude greater than or equal to 2, N3 represents the number of aftershocks with a magnitude greater than or equal to 3, N4 represents the number of aftershocks with a magnitude greater than or equal to 4, and N5 represents the number of aftershocks with a magnitude greater than or equal to 5. If the magnitude of the main shock does not exceed 6, N5 does not need to be counted. If the magnitude of the main shock exceeds 8, N6 needs to be counted.

[0108] According to the statistical results of aftershocks and the corresponding magnitudes, an array [(N2,2), (N3,3), (N4,4)...] is constructed. The array is used as the sample point and the least squares method is used to fit the values ​​of a and b in formula (2).

[0109] Further, see Figure 3 When using formula (2) to calculate the maximum possible aftershock magnitude, let N = 2 and find the value of M. The calculated M is the maximum possible aftershock magnitude (e.g. Figure 2 shown).

[0110] It is worth noting that the embodiment of the present invention analyzes the health status level of the target building after the earthquake occurs and before the earthquake wave arrives, which can be used to determine the earthquake warning level. Furthermore, after the earthquake disaster, that is, after the vibration of the target building caused by the earthquake ends, monitoring data can be collected from the monitoring instrument again and the current health status level of the target building after the earthquake can be determined, so as to evaluate the impact of the earthquake disaster on the target building and conduct aftershock risk assessment.

[0111] Furthermore, after calculating the maximum possible aftershock magnitude, the embodiment of the present invention also performs risk level assessment in combination with the current health status level of the target building. See Table 2, which is an aftershock risk level assessment table provided by an embodiment of the present invention, wherein M' represents the maximum possible aftershock magnitude, and "safe", "normal", "alert" and "dangerous" correspond to different aftershock risk levels.

[0112] Table 2 Aftershock risk level assessment table

[0113]

[0114] Specifically, "safe" means that the main structure of the building is not damaged, but the surface structure may be slightly damaged; "normal" means that the main structure of the building is slightly damaged, and the surface structure may crack; "warning" means that the main structure of the building is damaged but it does not affect the overall safety of the building, and the surface structure may crack and fall off; "dangerous" means that the damage to the main structure of the building threatens the overall safety of the building, and the surface structure may be seriously cracked and fall off.

[0115] Compared with the prior art, the earthquake early warning method applied to buildings provided by the embodiment of the present invention obtains the magnitude and epicenter distance after an earthquake occurs; calculates the predicted earthquake intensity based on the magnitude and the epicenter distance; obtains the monitoring data of the target building from the monitoring instrument installed on the target building; determines the health status level of the target building based on the monitoring data of the target building; determines the earthquake early warning level based on the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building, and issues corresponding early warning information based on the earthquake early warning level. The embodiment of the present invention can analyze the health status level of the target building based on the monitoring data of the target building, and evaluate the degree of damage that the earthquake may cause to the target building in combination with the health status level, the predicted earthquake intensity and the seismic fortification intensity, so as to determine the early warning level and issue corresponding early warning information, thereby improving the applicability of the pre-earthquake early warning information.

[0116] See also Figure 4 The embodiment of the present invention further provides an earthquake early warning device 10 applied to a building, comprising:

[0117] A building information acquisition module 11 is used to acquire monitoring data of the target building from monitoring instruments installed on the target building;

[0118] A health status assessment module 12, used to determine the health status level of the target building according to the monitoring data of the target building;

[0119] The earthquake information acquisition module 13 is used to obtain the magnitude and epicenter distance of an earthquake after it occurs;

[0120] An earthquake intensity prediction module 14, configured to calculate the predicted earthquake intensity according to the magnitude and the epicenter distance;

[0121] The pre-earthquake warning module 15 is used to determine the earthquake warning level according to the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building, and to issue corresponding warning information according to the earthquake warning level.

[0122] The earthquake early warning device applied to buildings provided by the embodiment of the present invention can implement all the process steps of the earthquake early warning method applied to buildings described in the above embodiment. The functions of each module and unit in the device and the technical effects achieved are respectively the same as the functions and technical effects achieved by the earthquake early warning method applied to buildings described in the above embodiment, and the specific implementation method will not be repeated here.

[0123] Exemplarily, in some embodiments, the earthquake early warning device 10 applied to a building also includes an autonomous setting module for autonomously setting parameters and thresholds involved in the health status assessment module 12 and the pre-earthquake early warning module 15, and can also be used to modify the current health status level of the target building.

[0124] See also Figure 5 The embodiment of the present invention further provides an earthquake early warning device 20 applied to a building, comprising a processor 21, a memory 22, and a computer program stored in the memory 22 and configured to be executed by the processor 21. When the processor 21 executes the computer program, the steps in the above-mentioned earthquake early warning method embodiment applied to a building are implemented, for example Figure 1 or, the processor 21 implements the functions of each module in the above-mentioned device embodiments when executing the computer program.

[0125] The earthquake early warning device applied to the building may be a computing device such as a desktop computer, a notebook, a PDA, and a cloud server. The earthquake early warning device applied to the building may include, but is not limited to, a processor and a memory. Those skilled in the art will understand that the schematic diagram is only an example of an earthquake early warning device applied to a building, and does not constitute a limitation on the earthquake early warning device applied to the building. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the earthquake early warning device applied to the building may also include input and output devices, network access devices, buses, etc.

[0126] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the earthquake early warning device applied to the building, and uses various interfaces and lines to connect the various parts of the earthquake early warning device applied to the building.

[0127] The memory can be used to store the computer program and / or module, and the processor realizes various functions of the earthquake early warning device applied to the building by running or executing the computer program and / or module stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function, etc.; the data storage area can store data created according to the use of the controller, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0128] Wherein, if the module integrated with the earthquake early warning device applied to the building is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0129] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An earthquake early warning method applied to buildings, characterized in that: include: Acquiring monitoring data of the target building from a monitoring instrument installed on the target building; Determining the health status level of the target building according to the monitoring data of the target building; After an earthquake occurs, obtain the magnitude and epicenter distance; Calculating the predicted earthquake intensity according to the magnitude and the epicenter distance; An earthquake warning level is determined based on the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building, and corresponding warning information is issued based on the earthquake warning level.

2. The earthquake early warning method applied to buildings according to claim 1, characterized in that: The method further comprises: After an earthquake occurs, the maximum possible aftershock magnitude is calculated based on the preset aftershock warning model; Aftershock risk information is determined based on the maximum possible aftershock magnitude and the current health status level of the target building.

3. The earthquake early warning method applied to buildings as claimed in claim 2, characterized in that: The aftershock early warning model is shown in the following formula: lg(N)=aM+b Among them, M represents the magnitude; N represents the number of aftershocks with magnitude greater than or equal to M; a and b represent coefficients, and both a and b are constants.

4. The earthquake early warning method for buildings according to claim 1, characterized in that: The monitoring data of the target building includes deformation parameters and vibration data of the target building, wherein the deformation parameters include at least one of horizontal displacement, settlement and tilt. Then, determining the health status level of the target building according to the monitoring data of the target building includes: Calculating the modal parameters of the target building according to the vibration data; wherein the modal parameters include at least one of natural frequency, vibration mode and modal damping; According to the modal parameters, a dynamic fingerprint method is used to identify the structural damage of the target building; According to the attribute data of the target building, the deformation parameters of the target building and the structural damage of the target building, a health factor of the target building is calculated using a pre-constructed judgment matrix; wherein the attribute data includes service life and daily load; The health status grade of the target building is determined according to the health coefficient and a preset health coefficient total score.

5. The earthquake early warning method for buildings as claimed in claim 4, characterized in that: The judgment matrix is ​​constructed in the following way: Taking attribute data, deformation parameters and structural damage as evaluation indicators of building health status, the hierarchical analysis method is used to construct the judgment matrix composed of weight values ​​of each evaluation indicator.

6. The earthquake early warning method for buildings according to claim 1, characterized in that: The health status level includes four levels: healthy, good, poor and extremely poor. Then, determining the earthquake warning level according to the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building includes: When the difference between the seismic fortification intensity and the predicted earthquake intensity is not greater than a first preset value, determining that the earthquake warning level is level one; When the difference between the seismic fortification intensity and the predicted earthquake intensity is greater than the first preset value and not greater than the second preset value: if the health status level of the target building is healthy, the earthquake warning level is determined to be level 2; if the health status level of the target building is not healthy, the earthquake warning level is determined to be level 1; When the difference between the seismic fortification intensity and the predicted seismic intensity is greater than the second preset value and not greater than the third preset value, and the predicted seismic intensity is greater than the preset seismic intensity threshold: if the health status level of the target building is healthy, the earthquake warning level is determined to be level three; if the health status level of the target building is good or poor, the earthquake warning level is determined to be level two; if the health status level of the target building is extremely poor, the earthquake warning level is determined to be level one; When the difference between the seismic fortification intensity and the predicted seismic intensity is greater than the third preset value, or when the predicted seismic intensity is not greater than the preset seismic intensity threshold: if the health status level of the target building is healthy or good, the earthquake warning level is determined to be level three; if the health status level of the target building is poor, the earthquake warning level is determined to be level two; if the health status level of the target building is extremely poor, the earthquake warning level is determined to be level one; The first preset value is smaller than the second preset value, and the second preset value is smaller than the third preset value.

7. The earthquake early warning method for buildings according to claim 6, characterized in that: The issuing of corresponding warning information according to the earthquake warning level includes: When the earthquake warning level is level one, the alarm is controlled to emit a high-decibel alarm and perform an earthquake countdown; When the earthquake early warning level is level 2, the alarm is controlled to emit a low-decibel alarm sound and perform an earthquake countdown; wherein the sound level of the high-decibel alarm sound is higher than the sound level of the low-decibel alarm sound; When the earthquake warning level is level three, the alarm is not controlled to sound an alarm, but an earthquake countdown is performed.

8. An earthquake early warning device applied to a building, characterized in that: include: A building information acquisition module, used to acquire monitoring data of the target building from monitoring instruments installed on the target building; A health status assessment module, used to determine the health status level of the target building according to the monitoring data of the target building; Earthquake information acquisition module, used to obtain the magnitude and epicenter distance after an earthquake occurs; An earthquake intensity prediction module, used to calculate the predicted earthquake intensity according to the magnitude and the epicenter distance; The pre-earthquake warning module is used to determine the earthquake warning level according to the predicted earthquake intensity, the seismic fortification intensity of the target building and the health status level of the target building, and to issue corresponding warning information according to the earthquake warning level.

9. An earthquake early warning device applied to a building, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the earthquake early warning method applied to buildings as claimed in any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the earthquake early warning method applied to buildings as claimed in any one of claims 1 to 7.

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