A building shock absorption structure early warning method and system

Abstract

The application discloses a building damping structure early warning method and system, the method comprises the following steps of S1, collecting the first parameter and the second parameter of the damping structure; S2, judging whether the damping structure has hidden troubles of failure one by one, if yes, issuing an alarm; if no, executing step S3; S3, respectively calculating the average value and the standard deviation of the stress parameter and the displacement parameter of the damping structure of the same type; S4, judging whether the damping structure has hidden troubles of failure, if yes, issuing an alarm; if no, executing step S5; S5, calculating the aging failure degree of the damping structure; S6, judging whether the aging failure degree of the damping structure reaches a set value, if yes, issuing an alarm; if no, executing step S7; S7, comprehensively evaluating the damping system of the building; S8, judging whether the damping system of the building is totally failed, if yes, issuing an alarm; if no, executing step S9; S9, waiting for a set time length, and executing step S1. The damping device can be monitored and warned, and the hidden troubles of failure of the damping structure can be known in time.

Description

Technical Field

[0001] This invention relates to the field of building monitoring technology, specifically to a method and system for early warning of building vibration reduction structures. Background Technology

[0002] In order to cope with the impact of geological disasters such as earthquakes, buildings need to be designed to resist earthquakes and isolate seismic activity.

[0003] In existing technologies, the vibration damping structures installed at different locations within a building vary. For example, for the main body of a building, seismic bearings are typically installed at the bottom. Some seismic bearings are spherical vibration damping and isolation bearings, such as the spherical vibration damping and isolation bearing disclosed in patent publication number CN216515104U; others are vibration isolation structures where a metal disc and rubber are vulcanized together, such as the foundation vibration isolation structure disclosed in patent publication number CN103717939B. For suspended structures such as ventilation ducts, seismic hangers are required, such as the seismic support hanger disclosed in patent publication number CN218644958U.

[0004] In practical applications, earthquakes are not frequent occurrences in a given region. However, seismic bearings and suspension systems are constantly subjected to stress. The key to the effectiveness of both seismic bearings and suspension systems lies in their elastic elements, typically springs or rubber components. Under prolonged pressure, these elastic elements are prone to failure and deformation, especially under conditions of high temperature, high humidity, strong acidity, or strong alkalinity, which accelerates aging and failure. When part of the damping structure fails, the overall seismic resistance of the building is significantly reduced.

[0005] Meanwhile, different seismic damping structures on the same building require a certain degree of synergy. For example, multiple seismic bearings in the same building should have coordinated stress and lateral displacement relationships. That is, in some cases, although each seismic bearing can meet the requirements individually, uneven stress distribution can lead to inconsistent lateral displacements between different seismic bearings, causing additional stress to concentrate inside the building and resulting in potential safety hazards.

[0006] How to promptly detect the failure risk of a single seismic damping structure and the safety hazards caused by stress incoordination among multiple seismic resisting components with synergistic effects on the same building is one of the important problems that urgently need to be solved in this field. Summary of the Invention

[0007] The purpose of this invention is to provide a method and system for early warning of building vibration reduction structures to overcome the shortcomings of the prior art. It can monitor and provide early warning of vibration reduction devices so as to promptly identify potential failures in the vibration reduction devices.

[0008] This invention provides a method for early warning of building vibration reduction structures, comprising the following steps:

[0009] S1, collect the first and second parameters of the vibration damping structure on the same building; wherein, the first parameter includes stress parameters and displacement parameters; the second parameter includes temperature, humidity and surface pH;

[0010] S2, determine whether there is a potential failure risk in each corresponding shock absorption structure according to the first parameter. If yes, issue an alarm and execute S3; otherwise, execute step S3.

[0011] S3. Calculate the average value and standard deviation of the stress parameters and displacement parameters of the same type of vibration reduction structure collected in this study.

[0012] S4. Based on the stress parameters and displacement parameters, determine whether there is a potential failure risk in each corresponding damping structure. If yes, issue an alarm and execute step S5; otherwise, execute step S5.

[0013] S5, calculate the degree of aging failure of each damping structure;

[0014] S6. Determine whether the aging failure degree of each shock absorption structure has reached the set value. If yes, issue an alarm and execute step S7; otherwise, execute step S7.

[0015] S7. The building's vibration reduction system is comprehensively evaluated based on the average value of stress parameters, the standard deviation of stress parameters, the average value of displacement parameters, the standard deviation of displacement parameters, and the degree of aging failure.

[0016] S8. Based on the comprehensive assessment results, determine whether the building's vibration reduction system has failed as a whole. If yes, issue an alarm and proceed to step S9; otherwise, proceed to step S9.

[0017] S9, wait for the set time, then proceed to step S1.

[0018] In the building vibration reduction structure early warning method described above, optionally, the stress parameters include the tensile or compressive forces borne by the vibration reduction structure in one or more corresponding directions;

[0019] The displacement parameters include the axial elongation or compression of the elastic element on the damping structure and the horizontal displacement of the damping structure.

[0020] In the building seismic mitigation structure early warning method described above, step S1 optionally includes the following specific steps:

[0021] S11, collect the first and second parameters of all vibration damping structures on the same building;

[0022] S12, record the acquisition time;

[0023] S13. Based on the acquisition time and the corresponding number of the damping structure, classify the acquired first and second parameters to obtain the first and second parameters of different damping structures at the same time.

[0024] In the building seismic mitigation structure early warning method described above, step S2 optionally includes the following specific steps:

[0025] S21, obtain the stress parameters and corresponding displacement parameters of each elastic element on each damping structure;

[0026] S22, calculate the elastic modulus of each elastic element one by one;

[0027] S23, determine whether each elastic modulus is within the preset elastic modulus range; if yes, it means there is no failure, and proceed to step S3; if no, it means there is a potential failure, and issue an alarm by displaying the data acquisition time, the corresponding damping structure number, and the corresponding elastic element on the damping structure, and proceed to step S3.

[0028] In the building seismic isolation structure early warning method described above, optionally, the calculation formula for the aging failure degree of each seismic isolation structure is as follows:

[0029]

[0030] Among them, b j The degree of aging failure of the j-th damping structure; t0 is the time interval between two consecutive data collections; f T (x) is the temperature-time variation function obtained by fitting the collected temperature values; f w (x) is the humidity-time variation function obtained by fitting the collected humidity values; f ph (x) is the pH change function over time obtained by fitting the collected pH data; F T (f T (x) is f T (x) Failure rate of change at temperature; F w (f w (x) is f w (x) Failure rate under humidity; F ph (f ph (x) is f ph (x) Failure rate under acidity / alkalinity.

[0031] In the building vibration reduction structure early warning method described above, optionally, in step S5, the degree of aging failure is obtained by the following method.

[0032] S51, pre-determine the aging failure rate and MAP diagrams of temperature, humidity and pH for each type of shock absorption structure;

[0033] S52, based on the currently collected temperature, humidity and pH, find the corresponding MAP chart and determine the aging failure change rate under the current temperature, humidity and pH;

[0034] S53, obtain the aging failure change rate and the corresponding time obtained in each time, and perform fitting to obtain the relationship between the aging failure change rate of each damping structure and time.

[0035] S54 integrates the relationship between the aging failure rate of each damping structure and time to obtain the degree of aging failure.

[0036] In the building vibration reduction structure early warning method described above, step S7 optionally includes:

[0037] S71, calculate the ratio of the standard deviation of the stress parameters to the average value of the stress parameters for the same type of vibration damping structure;

[0038] S72, calculate the ratio of the standard deviation of the displacement parameters to the average value of the displacement parameters for the same type of vibration damping structure;

[0039] S73, based on the ratio of the standard deviation of the stress parameters to the average value of the stress parameters of the same type of damping structure, the ratio of the standard deviation of the displacement parameters to the average value of the displacement parameters of the same type of damping structure, and the degree of aging failure, a comprehensive evaluation of the building's damping system is conducted.

[0040] In the building vibration reduction structure early warning method described above, step S73 optionally includes:

[0041] The first score is obtained from the set first score table based on the ratio of the standard deviation of the stress parameters to the average value of the stress parameters of the same type of vibration damping structure.

[0042] The second score is obtained from the set second score table based on the ratio of the standard deviation to the average value of the displacement parameters of the same type of vibration damping structure.

[0043] The third score is obtained from a pre-set third score table based on the degree of aging and failure.

[0044] The first, second, and third scores are weighted and summed, and the building's vibration reduction system is comprehensively evaluated based on the calculation results.

[0045] This invention also proposes a building vibration reduction structure early warning system, characterized in that it includes:

[0046] Force sensors are installed on the elastic elements of the shock-absorbing structure to collect the stress of the corresponding elastic elements at set time intervals.

[0047] A displacement sensor, installed on the vibration damping structure, is used to detect the change in the spring element of the vibration damping structure and the displacement of the vibration damping structure in the horizontal direction.

[0048] A temperature sensor, installed on the vibration damping structure, is used to detect the temperature of the vibration damping structure;

[0049] A humidity sensor, installed on the vibration damping structure, is used to detect the ambient humidity of the vibration damping structure;

[0050] The controller is electrically connected to the force sensor, displacement sensor, temperature sensor, and humidity sensor, and is used to control the force sensor, displacement sensor, temperature sensor, and humidity sensor to collect data at set intervals.

[0051] The controller is used to determine whether there are potential failure risks in each shock absorption structure based on the detection results of the force sensor, displacement sensor, temperature sensor and humidity sensor, and to issue an alarm command based on the determination result;

[0052] The networking module is electrically connected to the controller and is used to upload the detection results and alarm commands to the host computer and / or server via the network.

[0053] In the building vibration reduction structure early warning system described above, optionally, the host computer or the server is used to calculate the degree of aging failure based on the detection results of the force sensor, displacement sensor, temperature sensor and humidity sensor, and to comprehensively evaluate the building's vibration reduction system.

[0054] Compared with existing technologies, this invention monitors the vibration damping structures inside a building, collects a first parameter and a second parameter at regular intervals, and monitors each vibration damping structure inside the building using the first and second parameters respectively, to determine whether there are potential failure risks in each vibration damping structure inside the building, thereby achieving early warning for each vibration damping structure inside the building.

[0055] During the early warning process, stress parameters and displacement parameters are used to make judgments to accurately predict failures.

[0056] By conducting a collaborative assessment of the various damping structures within each building, the assessment results can reflect the synergistic effect between these structures, ensuring coordination and avoiding safety hazards caused by unreasonable stress distribution.

[0057] In addition, the present invention can output the state parameters of each damping structure in a timely manner after an earthquake, so as to facilitate a rapid assessment of the building and its internal damping structure after the earthquake. Attached Figure Description

[0058] Figure 1 This is a flowchart of the steps of the building vibration reduction structure early warning method proposed in this invention;

[0059] Figure 2 This is a flowchart illustrating the specific steps of step S1 in the building vibration reduction structure early warning method proposed in this invention;

[0060] Figure 3 This is a flowchart illustrating the specific steps of step S2 in the building vibration reduction structure early warning method proposed in this invention;

[0061] Figure 4 This is a flowchart illustrating the specific steps of step S5 in the building vibration reduction structure early warning method proposed in this invention;

[0062] Figure 5 This is a flowchart illustrating the specific steps of step S7 in the building vibration reduction structure early warning method proposed in this invention;

[0063] Figure 6 This is a flowchart illustrating the specific steps of step S73 in the building vibration reduction structure early warning method proposed in this invention.

[0064] Figure 7 This is a structural block diagram of the building vibration reduction structure early warning system proposed in this invention;

[0065] Figure 8 This is another structural block diagram of the building vibration reduction structure early warning system proposed in this invention. Detailed Implementation

[0066] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0067] To address the problems in the background art, the present invention proposes the following embodiments:

[0068] Example 1

[0069] This embodiment is used to address the risk of failure caused by the aging of the internal vibration damping structure of a building.

[0070] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 This embodiment proposes a method for early warning of building vibration reduction structures, which includes the following steps:

[0071] Please refer to Figure 1 S1, collecting first and second parameters of the vibration damping structure on the same building; wherein, the first parameter includes stress parameters and displacement parameters; the second parameter includes temperature, humidity, and surface pH. Specifically, in this invention, stress parameters and displacement parameters are used as important parameters reflecting the failure of the vibration damping structure. The second parameter is based on the working environment of the vibration damping structure to determine the aging failure of the vibration damping structure caused by the influence of the external environment. In this application, the vibration damping structure refers to seismic hangers and vibration isolation supports, etc.

[0072] In specific implementation, please refer to Figure 2 This step includes the following specific steps:

[0073] S11, collect the first and second parameters of all vibration damping structures on the same building.

[0074] S12, record the acquisition time.

[0075] S13. Based on the acquisition time and the corresponding number of the damping structure, classify the acquired first and second parameters to obtain the first and second parameters of different damping structures at the same time.

[0076] In practice, each first parameter and second parameter corresponds to a data entry, and each data entry contains at least three fields: the first field stores the acquisition time or the number of acquisitions; the second field stores the number or location of the damping structure corresponding to the first parameter or second parameter; and the third field stores the corresponding first parameter or second parameter.

[0077] Specifically, the data acquisition time and the number of acquisitions can be calculated based on the time interval between acquisitions. During the acquisition process, the time interval between two consecutive acquisitions is equal. The number or location of the damping structure corresponding to the first or second parameter can be set to be searchable through a table; that is, the table records the location of the damping structure corresponding to each number.

[0078] This method facilitates the rapid location of potential failure risks during early warning, enabling maintenance personnel to quickly locate these risks.

[0079] S2, determine whether there is a potential failure risk in each corresponding shock absorption structure according to the first parameter. If yes, issue an alarm and execute S3; otherwise, execute step S3.

[0080] In practical implementation, this step includes, S21, obtaining the stress parameters and corresponding displacement parameters of each elastic element on each damping structure. Specifically, there are many types of stress parameters on the damping structure; here, the selected stress parameters are the stress parameters of the elastic elements. The corresponding displacement parameters are the deformation amounts of the elastic elements.

[0081] S22, calculate the elastic modulus of each elastic element one by one. In practice, the elastic modulus is calculated from the stress and deformation of the corresponding elastic element.

[0082] Specifically, the calculation formula is as follows:

[0083]

[0084] Among them, M p,q Let F be the elastic modulus of the q-th elastic element on the p-th damping structure. p,q Let l be the stress parameter of the q-th elastic element on the p-th damping structure. p,q To be related to stress parameter F p,q The corresponding deformation amount.

[0085] S23, determine whether each elastic modulus is within the preset elastic modulus range; if yes, it means there is no failure, and proceed to step S3; if no, it means there is a potential failure, and issue an alarm by displaying the data acquisition time, the corresponding damping structure number, and the corresponding elastic element on the damping structure, and proceed to step S3.

[0086] In practice, the range of elastic modulus is set according to the material, shape, structure, and size of the elastic element. Alternatively, the range can be a value determined at the initial design stage. When the elastic modulus is outside this range, it indicates that the corresponding elastic element is at risk of failure or has already failed.

[0087] S3. Calculate the average and standard deviation of the stress and displacement parameters of the same type of vibration damping structure collected in this study. In practical implementation, the stress parameter used here is the sum of the stresses generated by the deformation of the elastic element, decomposed into coordinates in the transverse, longitudinal, and vertical directions, and taken as the sum of the stresses in the three directions.

[0088]

[0089] in, Let be the component of the stress on the x-axis of the i-th elastic element in a certain vibration damping structure; Let be the component of the stress on the y-axis of the i-th elastic element in a certain vibration damping structure; The component of the stress on the z-axis of the i-th elastic element in a certain vibration damping structure.

[0090] Specifically, before calculating the average value, the stress and displacement parameters are preprocessed. That is, the stress parameters are converted to correspondence with the design stress at the corresponding location. For example, the ratio of the current stress parameter to the corresponding design stress can be used as the preprocessed stress parameter, and the ratio of the current displacement parameter to the corresponding maximum allowable displacement can also be used as the preprocessed stress parameter. Alternatively, a reference design stress value can be selected for conversion. The specific conversion formula is as follows:

[0091]

[0092] Among them, F s,i The sum of the stresses in the lateral, longitudinal, and vertical directions of the i-th damping structure, F c,i The stress parameters are after processing. F c,0 For the design stress of the damping structure to be calculated, F s,0 The design stress is the selected damping structure.

[0093] Through the above preprocessing, the damping structures at different design stresses can be homogenized, so that the dispersion between each stress can be more accurately reflected when calculating the average value and standard deviation in the subsequent calculation.

[0094] The displacement parameters vary depending on the damping structure. For example, for seismic bearings, the displacement parameter in this step should be the lateral displacement, that is, the horizontal misalignment between the upper and lower ends of the seismic bearing. This reflects the seismic bearing's ability to restore its horizontal position and helps to determine the degree of stress concentration based on the degree of horizontal position restoration. For seismic hangers, the displacement parameter can be the sum of the deformations of each elastic element.

[0095] S4. Based on the stress parameters and displacement parameters, determine whether there is a potential failure risk in each corresponding damping structure. If yes, issue an alarm and execute step S5; otherwise, execute step S5.

[0096] That is, the potential for failure of each damping structure is determined by stress parameters and displacement parameters.

[0097] S5, calculate the degree of aging failure of each damping structure; specifically, the degree of aging failure is determined by considering the potential failure caused by environmental factors.

[0098] In practical implementation, for the calculation of failure hazard judgment, the present invention proposes two calculation methods: one is the theoretical calculation proposed in this embodiment, and the other is the fitting based on experimental results proposed in Example 2.

[0099] In this embodiment, the formula for calculating the degree of aging failure of each damping structure is as follows:

[0100]

[0101] Among them, b j The degree of aging failure of the j-th damping structure; t0 is the time interval between two consecutive data collections; f T (x) is the temperature-time variation function obtained by fitting the collected temperature values; f w (x) is the humidity-time variation function obtained by fitting the collected humidity values; f ph (x) is the pH change function over time obtained by fitting the collected pH data; F T (f T (x) is f T (x) Failure rate under conditions of temperature, relative humidity of 50%, and neutral environment; F w (f w (x) is f w (x) Failure rate under conditions of humidity, temperature 25°C, and neutral environment; F ph (f ph (x) represents the conditions f where the temperature is 25℃ and the relative humidity is 50%. ph (x) Failure rate under acidity / alkalinity.

[0102] In specific implementation, S6, it is determined whether the aging failure degree of each damping structure has reached the set value. If yes, an alarm is issued and step S7 is executed; if no, step S7 is executed. That is, when the aging failure degree of the damping structure reaches the set value, an alarm is issued and the corresponding damping structure number and location are displayed.

[0103] In practical implementation, in addition to performing aging failure analysis on each damping structure individually, this embodiment also analyzes the coordination between different damping structures of the same building. Specifically, referring to steps S7, a comprehensive evaluation of the building's damping system is conducted based on the average value of stress parameters, the standard deviation of stress parameters, the average value of displacement parameters, the standard deviation of displacement parameters, and the degree of aging failure.

[0104] That is, it is achieved through statistical calculation of stress parameters. When the degree of separation of stress parameters among various damping structures with correlation reaches a certain value, it indicates that the stress distribution inside the building is unreasonable and there are certain hidden dangers. Similarly, the existence of hidden dangers among damping structures can also be determined by statistical calculation of displacement parameters.

[0105] S71, calculate the ratio of the standard deviation of the stress parameters to the average value of the stress parameters for the same type of damping structure; the larger the ratio, the more the stress distribution of the damping structure deviates from the design value.

[0106] S72, calculate the ratio of the standard deviation of the displacement parameters to the average value of the displacement parameters for the same type of damping structure; the larger the ratio, the more the displacement distribution of the damping structure deviates from the design value.

[0107] S73. A comprehensive evaluation of a building's vibration damping system is conducted based on the ratio of the standard deviation to the average value of the stress parameters of the same type of damping structure, the ratio of the standard deviation to the average value of the displacement parameters of the same type of damping structure, and the degree of aging failure. In practice, these two ratios can also be compared with their corresponding set values ​​for judgment. Alternatively, a comprehensive evaluation can be performed based on this ratio and a failure degree comparison table.

[0108] Specifically, step S73 further includes, S731, obtaining a first score from a set first score table based on the ratio of the standard deviation of the stress parameters to the average value of the stress parameters of the same type of shock-absorbing structure.

[0109] S732, based on the ratio of the standard deviation of the displacement parameters to the average value of the displacement parameters of the same type of vibration damping structure, the second score is obtained from the set second score table;

[0110] S733, based on the degree of aging failure, obtain the third score from the pre-set third score table;

[0111] S734 calculates a weighted sum of the first, second, and third scores and then performs a comprehensive evaluation of the building's vibration reduction system based on the calculation results.

[0112] S8. Based on the comprehensive assessment results, determine whether the building's vibration reduction system has failed as a whole. If so, issue an alarm and proceed to step S9; otherwise, proceed to step S9. In specific implementation, the comprehensive assessment results can be compared with the set score to determine whether there is a risk of overall failure.

[0113] S9, wait for the set duration, then execute step S1. The set duration is the time interval between two consecutive data collections.

[0114] In specific implementation, the stress parameters include the tensile or compressive forces borne by the damping structure in one or more corresponding directions; the displacement parameters include the elongation or compression of the elastic element on the damping structure in the axial direction and the displacement of the damping structure in the horizontal direction.

[0115] Example 2

[0116] This embodiment is a further improvement based on Embodiment 1, and the differences will only be described below. The only difference between this embodiment and Embodiment 1 is the method for obtaining the degree of aging failure based on humidity, temperature, and pH.

[0117] Specifically, please refer to Figure 4 In step S5, the degree of aging failure is obtained through the following method:

[0118] S51, for each model of vibration damping structure, a MAP diagram of the aging failure rate versus temperature, humidity, and pH is pre-determined; in specific implementation, the MAP diagram of the aging failure rate versus temperature, humidity, and pH is pre-determined for each model of vibration damping structure. It is a series of points obtained through experiments showing the relationship between the failure rate versus temperature, humidity, and pH, and is obtained through fitting, specifically by interpolation fitting using the least squares method.

[0119] S52, based on the currently collected temperature, humidity and pH, find the corresponding MAP chart to determine the aging failure change rate under the current temperature, humidity and pH; in specific implementation, find the corresponding aging failure change rate from the MAP chart based on the currently collected temperature, humidity and pH, and record the current collection time, thus obtaining the data corresponding to the aging failure change rate and time.

[0120] S53, obtain the aging failure change rate and the corresponding time obtained in each time, and perform fitting to obtain the relationship between the aging failure change rate of each damping structure and time.

[0121] That is, for each damping structure, after each collection of temperature, humidity, and pH data, the aging failure rate is calculated, resulting in a point on the MAP chart, and the corresponding collection time is recorded. After multiple iterations, this method will generate a series of points (V... s ,t), where V s Let t represent the rate of change of aging failure and t represent time. By fitting the data points in this series, we can obtain the relationship between the rate of change of aging failure and time for the corresponding damping structure.

[0122] S54 integrates the relationship between the aging failure rate of each damping structure and time to obtain the degree of aging failure.

[0123] Compared to Example 1, the MAP obtained through this example can more accurately reflect the combined effects of temperature, humidity, and pH on aging failure.

[0124] Example 3

[0125] This embodiment is an early warning system corresponding to Embodiment 1 or Embodiment 2. That is, the method of Embodiment 1 or Embodiment 2 can be used on the basis of this embodiment.

[0126] Please refer to Figure 7 and Figure 8This embodiment proposes an early warning system for the building vibration reduction structure early warning method as described in Embodiment 1 or 2, which includes a force sensor, a displacement sensor, a temperature sensor, a humidity sensor, a controller, and a networking module.

[0127] A force sensor is installed on the elastic element of the shock-absorbing structure to collect the stress of the corresponding elastic element at set time intervals; that is, the stress parameters in Embodiment 1 or 2 are collected by the force sensor. In specific implementation, a corresponding model of sensor can be set according to the different types of stress parameters.

[0128] A displacement sensor, installed on the vibration damping structure, is used to detect the change in the spring elements of the vibration damping structure and the horizontal displacement of the vibration damping structure; that is, the displacement parameters in Embodiment 1 or 2 are collected by the displacement sensor. In specific implementation, depending on the type of displacement parameter, a corresponding model of displacement sensor can be set, and the position and state of the displacement sensor can be set as needed.

[0129] A temperature sensor is installed on the vibration damping structure to detect the temperature of the vibration damping structure; that is, the temperature in Example 1 or 2 is collected by the temperature sensor.

[0130] A humidity sensor, installed on the vibration-damping structure, is used to detect the ambient humidity of the vibration-damping structure. That is, the humidity in Example 1 or 2 is collected by the humidity sensor.

[0131] During the data acquisition process, the sensors described above can acquire data in real time, with the controller obtaining the corresponding signals at set times. Alternatively, the controller can activate each sensor at a set time to collect data.

[0132] The controller is electrically connected to the force sensor, displacement sensor, temperature sensor, and humidity sensor. The controller is used to control the force sensor, displacement sensor, temperature sensor, and humidity sensor to collect data at set intervals. The controller is used to determine whether there are potential failure hazards in each shock absorption structure based on the detection results of the force sensor, displacement sensor, temperature sensor, and humidity sensor, and to issue an alarm command based on the determination result.

[0133] The networking module is electrically connected to the controller and is used to upload the detection results and alarm commands to the host computer and / or server via the network.

[0134] In practice, alarm content can be displayed through monitoring devices, such as monitors or displays, or displays that can communicate with controllers or servers.

[0135] In specific implementation, steps S2 to S8 in Embodiment 1 or Embodiment 2 can be implemented entirely by the controller, entirely by the host computer or server, or partially by the controller and partially by the host computer or server.

[0136] When steps S2 to S8 in Embodiment 1 or Embodiment 2 are all implemented by the controller, the networking module is used to output the alarm command to the host computer or the server. After the alarm command is output to the server, the server outputs the command to the corresponding network via the Internet and transmits the data information collected by each sensor to the server, which can be accessed by the designated user for reference during maintenance.

[0137] When steps S2 to S8 in Embodiment 1 or Embodiment 2 are all implemented by a host computer or server, the controller does not process the data. It directly uploads the signals collected by the sensors to the server via the network module. The server or host computer processes the data according to steps S2 to S8 and outputs alarm commands. That is, the host computer or server is used to calculate the degree of aging failure based on the detection results of the force sensor, displacement sensor, temperature sensor, and humidity sensor, and to comprehensively evaluate the building's vibration reduction system. In this case, the controller is only used for timing and controlling the network module to achieve data transmission.

[0138] When some steps are implemented by the controller and others by the host computer or server, for example, steps S2, S3, S4, and S9 are implemented by the controller, while steps S5, S6, S7, and S8 are implemented by the host computer or server, the controller is not only used to execute the above steps, but also to achieve bidirectional data transmission with the host computer and server to ensure the implementation of this method.

[0139] It should be noted that, in this application, the horizontal, vertical and longitudinal directions can form a three-dimensional rectangular coordinate system, wherein the horizontal and longitudinal directions are rectangular coordinate systems in the horizontal plane.

[0140] The above description, based on the embodiments shown in the figures, details the structure, features, and effects of the present invention. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of the present invention.

Claims

1. A method for early warning of seismic isolation structures in buildings, characterized in that: Includes the following steps, S1, collect the first and second parameters of the vibration damping structure on the same building; wherein, the first parameter includes stress parameters and displacement parameters; the second parameter includes temperature, humidity and surface pH; the stress parameter includes the tensile or compressive force borne by the vibration damping structure in one or more corresponding directions; the displacement parameter includes the elongation or compression of the elastic element on the vibration damping structure in the axial direction and the displacement of the vibration damping structure in the horizontal direction; S2, determine whether there is a potential failure risk in each corresponding shock absorption structure according to the first parameter. If yes, issue an alarm and execute S3; otherwise, execute step S3. S3. Calculate the average and standard deviation of the stress and displacement parameters of the same type of vibration damping structure collected in this study. The stress parameter used here is the sum of the stresses generated by the deformation of the elastic element in three coordinate systems: transverse, longitudinal, and vertical. in Let be the component of the stress on the x-axis of the i-th elastic element in a certain vibration damping structure. Let be the component of the stress on the y-axis of the i-th elastic element in a certain vibration damping structure; The stress component of the i-th elastic element on a vibration damping structure along the z-axis; before calculating the average value, the stress parameters are converted to the corresponding design stress relationship. The conversion formula is as follows: Where F s,i The sum of the stresses in the lateral, longitudinal, and vertical directions of the i-th damping structure, F c,i F represents the processed stress parameters. c,0 For the design stress of the damping structure to be calculated, F s,0 The design stress for the selected damping structure; S4. Based on the stress parameters and displacement parameters, determine whether there is a potential failure risk in each corresponding damping structure. If yes, issue an alarm and execute step S5; otherwise, execute step S5. S5, calculate the degree of aging failure of each damping structure; S6. Determine whether the aging failure degree of each shock absorption structure has reached the set value. If yes, issue an alarm and execute step S7; otherwise, execute step S7. S7. The building's vibration reduction system is comprehensively evaluated based on the average value of stress parameters, the standard deviation of stress parameters, the average value of displacement parameters, the standard deviation of displacement parameters, and the degree of aging failure. S8. Based on the comprehensive assessment results, determine whether the building's vibration reduction system has failed as a whole. If yes, issue an alarm and proceed to step S9; otherwise, proceed to step S9. S9, wait for the set time, then proceed to step S1; The formulas for calculating the degree of aging failure of each damping structure are as follows: Among them, b j The degree of aging failure of the j-th damping structure; t0 is the time interval between two consecutive data collections; f T (x) is the temperature-time variation function obtained by fitting the collected temperature values; f w (x) is the humidity-time variation function obtained by fitting the collected humidity values; f ph (x) is the pH change function over time obtained by fitting the collected pH data; F T (f T (x) is f T (x) Failure rate of change at temperature; F w (f w (x) is f w (x) Failure rate under humidity; F ph (f ph (x) is f ph (x) Failure rate under acidity / alkalinity.

2. The building vibration reduction structure early warning method according to claim 1, characterized in that: Step S1 includes the following specific steps: S11, collect the first and second parameters of all vibration damping structures on the same building; S12, record the acquisition time; S13. Classify the collected first and second parameters according to the acquisition time and the corresponding number of the damping structure; To obtain the first and second parameters of different damping structures at the same moment.

3. The building vibration reduction structure early warning method according to claim 2, characterized in that: Step S2 includes the following specific steps: S21, obtain the stress parameters and corresponding displacement parameters of each elastic element on each damping structure; S22, calculate the elastic modulus of each elastic element one by one; S23, determine whether each elastic modulus is within the preset elastic modulus range; if yes, it means there is no failure, and proceed to step S3; if no, it means there is a potential failure, and issue an alarm by displaying the data acquisition time, the corresponding damping structure number, and the corresponding elastic element on the damping structure, and proceed to step S3.

4. The building vibration reduction structure early warning method according to claim 1, characterized in that: Step S7 includes, S71, calculate the ratio of the standard deviation of the stress parameters to the average value of the stress parameters for the same type of vibration damping structure; S72, calculate the ratio of the standard deviation of the displacement parameters to the average value of the displacement parameters for the same type of vibration damping structure; S73, based on the ratio of the standard deviation of the stress parameters to the average value of the stress parameters of the same type of damping structure, the ratio of the standard deviation of the displacement parameters to the average value of the displacement parameters of the same type of damping structure, and the degree of aging failure, a comprehensive evaluation of the building's damping system is conducted.

5. The building vibration reduction structure early warning method according to claim 4, characterized in that: Step S73 includes, S731, based on the ratio of the standard deviation of the stress parameters to the average value of the stress parameters of the same type of shock-absorbing structure, the first score is obtained from the set first score table; S732, based on the ratio of the standard deviation of the displacement parameters to the average value of the displacement parameters of the same type of vibration damping structure, the second score is obtained from the set second score table; S733, based on the degree of aging failure, obtain the third score from the pre-set third score table; S734 calculates a weighted sum of the first, second, and third scores and then performs a comprehensive evaluation of the building's vibration reduction system based on the calculation results.

6. An early warning system for use in the building vibration reduction structure early warning method as described in any one of claims 1-5, characterized in that: include, Force sensors are installed on the elastic elements of the shock-absorbing structure to collect the stress of the corresponding elastic elements at set time intervals. A displacement sensor, installed on the vibration damping structure, is used to detect the change in the spring element of the vibration damping structure and the displacement of the vibration damping structure in the horizontal direction. A temperature sensor, installed on the vibration damping structure, is used to detect the temperature of the vibration damping structure; A humidity sensor, installed on the vibration damping structure, is used to detect the ambient humidity of the vibration damping structure; The controller is electrically connected to the force sensor, displacement sensor, temperature sensor, and humidity sensor, and is used to control the force sensor, displacement sensor, temperature sensor, and humidity sensor to collect data at set intervals. The controller is used to determine whether there are potential failure risks in each shock absorption structure based on the detection results of the force sensor, displacement sensor, temperature sensor and humidity sensor, and to issue an alarm command based on the determination result; The networking module is electrically connected to the controller and is used to upload the detection results and alarm commands to the host computer and / or server via the network.

7. The building vibration reduction structure early warning system according to claim 6, characterized in that: The host computer or the server is used to calculate the degree of aging failure based on the detection results of the force sensor, displacement sensor, temperature sensor and humidity sensor, and to conduct a comprehensive evaluation of the building's vibration reduction system.

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