Building structure anti-seismic performance monitoring method, device and system

Abstract

The invention relates to the technical field of vibration testing, in particular to a building structure anti-seismic performance monitoring method, device and system. According to the method, the damage accumulation degree of the building structure is determined based on inclination angle data, so that the form recovery capability of the building structure after shaking is obtained; based on the damage accumulation degree and the settlement volume data, anti-seismic performance indexes of the building structure are determined, and the anti-seismic capacity of the building structure is obtained; determining the danger degree of the building structure based on the anti-seismic performance index so as to obtain the damage degree of the external force to the building structure; based on the danger degree, the data acquisition frequency of the tilt angle sensor and the static leveling instrument is determined, so that the influence of external force on the building structure can be mastered more timely. According to the method, the influence of accumulated damage and differential settlement of the building structure on the building structure can be comprehensively considered, and the accuracy of anti-seismic performance monitoring is improved.

Description

Technical Field

[0001] The present invention relates to the field of vibration testing technology, and in particular to a method, equipment and system for monitoring the seismic performance of a building structure. Background Art

[0002] With the acceleration of urbanization, the number and size of buildings are increasing. In order to reduce the degree of damage to buildings caused by natural disasters such as earthquakes and protect people’s lives and property, it is necessary to make the building structure have good earthquake resistance, thereby maintaining the stability of the building and improving the building’s ability to cope with external force impacts.

[0003] At present, when monitoring the seismic performance of building structures, sensors are usually installed on a certain building structure and the morphological data of the building structure is obtained regularly. The seismic performance of the building structure in the corresponding state is analyzed based on the morphological data measured each time. However, since the building structure may accumulate damage when responding to external forces (such as earthquakes, typhoons, etc.), its seismic performance is greatly reduced, and there may be construction conditions in nearby locations, which may cause uneven settlement of the foundation of the building structure, affecting the seismic performance of the building structure, etc., which in turn affects the accuracy of monitoring the seismic performance of the building structure. Therefore, it is urgent to develop a method, equipment and system for monitoring the seismic performance of building structures. Summary of the invention

[0004] In order to solve the technical problem that the cumulative damage and uneven settlement of building structures affect the monitoring of seismic performance, the purpose of the present invention is to provide a method, device and system for monitoring the seismic performance of building structures. The technical solutions adopted are as follows: In a first aspect, the present invention provides a method for monitoring the seismic performance of a building structure, the method comprising: Step 101, obtaining inclination data detected by an inclination sensor and settlement data detected by a static level, wherein the inclination sensor is installed at a corner point of each floor of the building structure, and the static level is installed around the building structure; Step 102, determining the damage accumulation degree of the building structure based on the inclination data; Step 103, determining the seismic performance index of the building structure based on the damage accumulation degree and the settlement data; Step 104, determining the danger level of the building structure based on the seismic performance index; Step 105: determining the data collection frequency of the inclination sensor and the static level based on the risk level.

[0005] In some embodiments, step 102 includes: Step 1021, based on the inclination angle data, determining the difference in inclination angles of a single position of the building structure at two adjacent moments, wherein the single position of the building structure is a position corresponding to a corner point of each floor; Step 1022: In response to the difference between the tilt angles of two adjacent moments at a single position of the building structure being positive, the later moment between the two adjacent moments is taken as the starting moment of the kth shaking; in response to the difference between the tilt angles of two adjacent moments at a single position of the building structure being negative, the earlier moment between the two adjacent moments is taken as the moment when the kth shaking occurs with the maximum shaking; and before the moment when the k+1th shaking occurs, the moment when the tilt angle has the minimum value is taken as the ending moment of the kth shaking; Step 1023, determining the shaking direction vector of each moment during each shaking process of a single position of the building structure, wherein the shaking direction vector is a vector whose tilt direction of the building structure points to the vertical direction. , i represents the serial number of a single position of the building structure; Step 1024: The sum of the shaking direction vectors of all the single positions corresponding to one side of the building structure at each moment during each shaking process is taken as the shaking direction vector of the building structure at each moment during each shaking process. , the unilateral shaking direction vector of the building structure at each moment during each shaking process The angle with the vertical direction is , the single side of the building structure is a single vertical angle line of the building structure, and z represents the serial number of the single side of the building structure; Step 1025, based on the shaking direction vector of each moment during each shaking process of a single position of the building structure , determine the angle of inclination direction at the start and end of each shaking process of a single location of the building structure ,in, represents the tilt direction vector of the i-th position of the building structure at the start of the k-th shaking, represents the tilt direction vector of the i-th position of the building structure at the end time of the k-th shaking, where k represents the shaking number; Step 1026, determining a deformation recovery index of one side of the building structure; Step 1027: Determine the damage accumulation degree of the building structure based on the deformation recovery index of one side of the building structure.

[0006] In some embodiments, the deformation recovery index of a single side of the building structure is determined according to the following formula: ; In the formula, It represents the deformation recovery index of the kth shaking of the zth side of the current building structure. represents the maximum tilt angle of all single positions corresponding to the z-th side at the start of the k-th shaking, for The sine value of represents the maximum value of the tilt angle of all single positions corresponding to the z-th side at the start and end time of the k-th shaking, It represents the minimum value of the angle of the tilt direction of all single positions corresponding to the z-th side at the start and end time of the k-th shaking.

[0007] In some embodiments, the damage accumulation degree of the building structure is determined according to the following formula: ; ; In the formula, It represents the difference between the deformation recovery index of the kth shaking of the current building structure on the zth side and the deformation recovery index of the k-1th shaking. It represents the deformation recovery index of the k-1th shaking of the zth side of the current building structure. It indicates the damage accumulation degree of the current building structure at the kth shaking of the zth side. Indicates the corresponding values ​​of all adjacent moments on the z-th side of the current building structure The mean of .

[0008] In some embodiments, step 103 includes: Step 1031, according to the following formula, based on the settlement data, determine the uneven settlement index of the location of the building structure at the current moment: ; In the formula, It represents the uneven settlement index of the location of the mth building structure at the current moment. It represents the mean of all detected settlement data around the m-th building structure at the current moment. It represents the range of all detected settlement data around the m-th building structure at the current moment. It represents the mean of all detected settlement data around all building structures at the current moment, and m represents the number of building structures; Step 1032, determine the seismic performance index of the building structure at each shaking at the current moment according to the following formula: ; In the formula, It represents the seismic performance index of the m-th building structure during the k-th shaking. represents the mean value of the uneven settlement index of all building structures at corresponding positions during the kth shaking. It represents the uneven settlement index of the location of the mth building structure during the kth shaking. Indicates the unilateral correspondence of the mth building structure during the kth shaking The maximum value of for The cosine value of It represents the minimum value of the corresponding damage accumulation degree on one side of the m-th building structure during the k-th shaking.

[0009] In some embodiments, the danger level of the building structure is determined based on the seismic performance index according to the following formula: ; In the formula, It indicates the danger level of the m-th building structure when it shakes for the kth time. It represents the seismic performance index of the m-th building structure during the k-th shaking. represents the maximum value of the seismic performance index of all building structures during the kth shaking. It represents the distance from the mth building structure to the minimum value of the seismic performance index of all building structures during the kth shaking. Indicates that the minimum value of the seismic performance index of all building structures during the kth shaking corresponds to the direction vector of the building structure pointing to the maximum value of the seismic performance index of the building structure, The minimum value of the seismic performance index of all building structures during the kth shaking corresponds to the direction vector pointing to the mth building structure. for and The cosine of the angle between .

[0010] In some embodiments, the data acquisition frequency of the inclination sensor and the static level is determined according to the following formula: ; In the formula, represents the data collection frequency of the inclination sensor and static level of the mth building structure after the kth shaking occurs, represents the data acquisition frequency of the inclination sensor and static level of the mth building structure before adjustment, For the general Normalized value normalized to (0,1).

[0011] In some embodiments, the method further comprises step 106: In response to the normalized value of the danger level of the building structure being greater than the danger threshold, an alarm message that the building structure needs maintenance is output, and the inclination sensor and the static level of the building structure are adjusted to the highest data acquisition frequency.

[0012] In a second aspect, the present invention provides a device for monitoring the seismic performance of a building structure, wherein the device uses a method for monitoring the seismic performance of a building structure described in the first aspect for monitoring.

[0013] In a third aspect, the present invention provides a system for monitoring the seismic performance of a building structure, the system comprising: An acquisition module, used to acquire inclination data detected by an inclination sensor and settlement data detected by a static level, wherein the inclination sensor is installed at a corner point of each floor of the building structure, and the static level is installed around the building structure; A first determination module is used to determine the damage accumulation degree of the building structure based on the inclination data; A second determination module is used to determine the seismic performance index of the building structure based on the damage accumulation degree and the settlement data; A third determination module is used to determine the danger level of the building structure based on the seismic performance index; The fourth determination module is used to determine the data collection frequency of the inclination sensor and the static level based on the risk level.

[0014] The present invention has the following beneficial effects: The present invention provides a method, device and system for monitoring the seismic performance of a building structure. The method first obtains the inclination data detected by the inclination sensor and the settlement data detected by the static level, so as to grasp the inclination angle of each corner point of the building structure in the vertical direction and the longitudinal displacement of the building structure; then, based on the inclination data, the damage accumulation degree of the building structure is determined, so as to obtain the morphological recovery ability of the building structure after shaking; further, based on the damage accumulation degree and the settlement data, the seismic performance index of the building structure is determined to obtain the seismic capacity of the building structure; then, based on the seismic performance index, the danger degree of the building structure is determined, so as to obtain the degree of harm of the external force to the building structure; finally, based on the danger degree, the data acquisition frequency of the inclination sensor and the static level is determined, so as to grasp the influence of the building structure by the external force in a more timely manner. The method can comprehensively consider the influence of the accumulated damage and uneven settlement of the building structure on the building structure, and improve the accuracy of seismic performance monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A method flow chart of a method for monitoring seismic performance of a building structure provided by one embodiment of the present invention; Figure 2The present invention is a schematic structural diagram of a system for monitoring the seismic performance of a building structure provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] 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 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.

[0018] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0019] It should be noted that in order to ensure that the calculation results are meaningful, when performing fractional operations in the embodiments of the present invention, when the denominator is 0, it is necessary to add a parameter adjustment factor greater than 0 to the denominator to prevent the denominator from being 0. The value of the parameter adjustment factor is set by the implementer according to actual conditions, and this application does not impose any special restrictions.

[0020] The following is a detailed description of a method, device and system for monitoring the seismic performance of a building structure provided by the present invention in conjunction with the accompanying drawings.

[0021] In a first aspect, the present invention provides a method for monitoring the seismic performance of a building structure, see Figure 1 , the method comprising: Step 101, obtaining the inclination data detected by the inclination sensor and the settlement data detected by the static level, wherein the inclination sensor is installed at the corner point of each floor of the building structure, and the static level is installed around the building structure.

[0022] The inclination data can reflect the vertical inclination angle of each corner point of the building structure, and the settlement data can reflect the longitudinal displacement of the building structure.

[0023] In some embodiments, the initial data collection frequency of the inclination sensor and the static level may be once per minute.

[0024] When responding to external force impacts (such as earthquakes, wind impacts, etc.), the building structure will shake with the external force. Under normal circumstances, the building structure has a certain toughness, which enables it to absorb the energy of external force impact through uniform and appropriate deformation, thereby maintaining its own structural stability. The uniform and appropriate deformation will cause the inclination data detected by the inclination sensor at the corner point of the building structure and the settlement data detected by the static level around the building structure to change. Among them, the shaking amplitudes at different positions inside the building structure are relatively similar. Therefore, the inclination data and settlement data are used to analyze the damage accumulation and earthquake resistance of the building structure.

[0025] It should be noted that both the inclination data and the settlement data are time series data, which can capture the changes in the building structure during each shaking process.

[0026] Step 102: Determine the damage accumulation degree of the building structure based on the inclination data.

[0027] During the shaking process, the building structure absorbs the energy of external impact, thereby maintaining the stability of the building structure. However, with the increase in the frequency of external impact and the influence of impact intensity, the shaking of the building structure will cause a certain amount of damage accumulation. As the degree of damage accumulation increases, the ability of the building structure to cope with external impact becomes worse. For example, under normal circumstances, the shape of the building structure after shaking can be restored to be exactly the same as before the shaking. As the damage accumulates, the shape recovery ability of the building structure may gradually weaken. The degree of damage accumulation of the building structure can reflect the shape recovery ability of the building structure after shaking.

[0028] In some embodiments, step 102 includes: Step 1021, based on the inclination data, determine the difference in inclination angles of a single position of the building structure at two adjacent moments, where the single position of the building structure is a position corresponding to a corner point of each floor.

[0029] Since there is no shaking of the building structure in a stable state, the inclination sensor at the same detection position will obtain the same results for multiple consecutive measurements. When the building structure shakes, the inclination angle begins to increase, and gradually returns to its original state after reaching the maximum shaking amplitude. Therefore, determining the difference in the inclination angles of a single position of the building structure at two adjacent moments facilitates the analysis of the time period of each shaking at a single position in the building structure.

[0030] Step 1022, in response to the difference of the tilt angle between two adjacent moments at a single position of the building structure being positive, the later moment between the two adjacent moments is taken as the starting moment of the kth shaking; in response to the difference of the tilt angle between two adjacent moments at a single position of the building structure being negative, the earlier moment between the two adjacent moments is taken as the moment of maximum shaking of the kth shaking; before the moment of occurrence of the k+1th shaking, the moment when the minimum tilt angle appears is taken as the end moment of the kth shaking.

[0031] The positive or negative value of the difference in the tilt angle at two adjacent moments at a single position can reflect the start and end time of the shaking and the time when the maximum shaking occurs.

[0032] In some embodiments, the difference in the inclination angle of a single position of the building structure at two adjacent moments is calculated according to the following formula: ; In the formula, represents the tilt angle at time t+1, represents the tilt angle at time t, It represents the difference between the tilt angle at time t+1 and the tilt angle at time t.

[0033] Step 1023, determine the shaking direction vector of each moment during each shaking process of a single position of the building structure, where the shaking direction vector is a vector pointing from the tilt direction of the building structure to the vertical direction. , i represents the ordinal number of a single location of the building structure.

[0034] The shaking direction vector at each moment during each shaking process of a single position of the building structure can reflect the shaking direction of the building structure.

[0035] In some embodiments, the earliest occurrence time of each shaking at all positions of the building structure is used as the earliest occurrence time of the shaking of the building structure, and the latest end time of each shaking at all positions of the building structure is used as the latest end time of the shaking of the building structure.

[0036] Step 1024: The sum of the shaking direction vectors of all the single positions corresponding to one side of the building structure at each moment during each shaking process is taken as the shaking direction vector of the building structure at each moment during each shaking process. , the unilateral shaking direction vector of the building structure at each moment during each shaking process The angle with the vertical direction is , a single side of the building structure is a single vertical angle line of the building structure, and z represents the serial number of the single side of the building structure.

[0037] The unilateral shaking direction vector of the building structure It can reflect the sway direction of the building structure on one side as a whole. The sway direction vector of the building structure on one side at each moment during each sway process is The angle with the vertical direction can reflect the degree of deviation of one side of the building structure from the vertical.

[0038] Step 1025, based on the shaking direction vector of each moment during each shaking process of a single position of the building structure , determine the angle of inclination direction at the start and end of each shaking process of a single location of the building structure ,in, represents the tilt direction vector of the i-th position of the building structure at the start of the k-th shaking, It represents the tilt direction vector of the i-th position of the building structure at the end time of the k-th shaking, and k represents the shaking number.

[0039] The angle of the tilt direction at the start and end time of a certain shaking process of a single location of the building structure is the angle between the tilt direction vectors at the start and end time of the shaking process of the single location of the building structure, which can indirectly reflect the recovery of the single location of the building structure during the shaking. The smaller the angle, the better the recovery of the single location of the building structure during the shaking.

[0040] Under normal circumstances, the building structure has a strong ability to control its own deformation, and the shaking amplitude at different locations inside is relatively uniform. However, as damage accumulates, there may be more severe local shaking, causing the deformation degree at the corresponding location to differ greatly from that at other locations. Therefore, it is necessary to understand the degree of deformation recovery on one side of the building structure.

[0041] Step 1026, determining the deformation recovery index of one side of the building structure.

[0042] The deformation recovery index of one side of the building structure can reflect the degree of deformation recovery of one side of the building structure.

[0043] In some embodiments, the deformation recovery index of a single side of the building structure is determined according to the following formula: ; In the formula, It indicates the deformation recovery index of the kth shaking of the zth side of the current building structure, reflecting the deformation recovery degree of the kth shaking of the zth side of the current building structure and its value is not zero. It indicates the maximum tilt angle of all single positions corresponding to the z-th side at the start of the k-th shaking. The smaller the value, the closer the shape of the current building structure on this side is to the normal shape after deformation. for The sine value of quantifies the degree to which the shape of the current building structure on this side after deformation is close to the normal shape. It represents the maximum value of the angle of the tilt direction of all the individual positions corresponding to the z-th side at the start and end time of the k-th shaking. The smaller the value, the better the overall recovery of all the individual positions corresponding to the z-th side. It represents the minimum value of the angle of the tilt direction of all single positions corresponding to the z-th side at the start and end time of the k-th shaking. reflect and The difference in the degree of deformation recovery of and the value is not zero. The smaller the value is, the smaller the difference in the degree of deformation recovery of all single positions corresponding to the z-th side is. The bigger, The bigger, The smaller it is, the greater the degree of deformation recovery of the kth sway on the zth side of the current building structure.

[0044] Step 1027: Determine the damage accumulation degree of the building structure based on the deformation recovery index of one side of the building structure.

[0045] Determine the degree of damage accumulation of the building structure so as to understand the building structure's ability to recover after shaking.

[0046] In some embodiments, the damage accumulation degree of the building structure is determined according to the following formula: ; ; In the formula, It represents the difference between the deformation recovery index of the kth shaking of the current building structure on the zth side and the deformation recovery index of the k-1th shaking, reflecting the difference in the impact of the two shakings on the deformation recovery capacity of the building structure. It represents the deformation recovery index of the k-1th shaking of the z-th side of the current building structure, reflecting the degree of deformation recovery of the k-1th shaking of the z-th side of the current building structure. It indicates the damage accumulation degree of the current building structure at the kth shaking of the zth side, which can reflect the morphological recovery ability of the building structure after shaking. Indicates the corresponding values ​​of all adjacent moments on the z-th side of the current building structure The average value of reflects the overall situation of the difference in deformation recovery index of all adjacent moments on the z-th side of the current building structure up to now, and the value is not zero. The larger the value, the greater the overall difference between the deformation recovery index of the kth shaking of the zth side of the current building structure and the deformation recovery index of the k-1th shaking compared with the deformation recovery index of all adjacent moments of the zth side of the current building structure. If the building structure shakes, the greater the overall difference between the deformation recovery index of this side and the deformation recovery index of all adjacent moments of this side of the current building structure (i.e. The larger the value is) and the smaller the deformation recovery index of that side of the current building structure during the shaking is, the greater the degree of damage accumulation of that side of the current building structure during the shaking is, and the worse the morphological recovery ability of the building structure after the shaking is.

[0047] Since the seismic performance of a building structure is affected by the degree of ground settlement at its location, the seismic performance of a single building structure in its current state is analyzed by combining the degree of ground settlement with the degree of damage accumulation of the building structure. If the degree of uneven ground settlement at the location of a certain building structure is large, the current building structure shakes to a large extent, and the shaking degree at different locations of the building structure is unstable (i.e., the degree of damage accumulation is large), the seismic performance of the current building structure is poor.

[0048] Step 103: Determine the seismic performance index of the building structure based on the damage accumulation degree and settlement data.

[0049] The seismic performance index of a building structure can reflect the seismic resistance of the building structure.

[0050] In some embodiments, step 103 includes: Step 1031, according to the following formula, based on the settlement data, determine the uneven settlement index of the location of the building structure at the current moment: ; In the formula, It indicates the uneven settlement index of the location of the m-th building structure at the current moment, reflecting the uneven settlement of the location of the m-th building structure at the current moment. It represents the mean of all the settlement data detected around the m-th building structure at the current moment, reflecting the overall situation of all the settlement data detected around the m-th building structure at the current moment. It indicates the range of all detected settlement data around the m-th building structure at the current moment, reflecting the difference between all detected settlement data around the m-th building structure at the current moment. It represents the mean of all detected settlement data around all building structures at the current moment and its value is not zero, reflecting the overall situation of all detected settlement data around all building structures at the current moment. m represents the number of building structures. The larger the value, the greater the settlement degree of the mth building structure compared with all building structures at the current moment. The larger the value is, the uneven settlement index of the location of the mth building structure at the current moment is The larger the value is, the more serious the uneven settlement of the location of the m-th building structure is at the current moment.

[0051] Step 1032, determine the seismic performance index of the building structure at each shaking at the current moment according to the following formula: ; In the formula, It represents the seismic performance index of the m-th building structure during the k-th shaking, reflecting the seismic capacity of the m-th building structure during the k-th shaking. It represents the mean value of the uneven settlement index of all building structures at the corresponding positions during the kth shaking, and the overall uneven settlement degree of all building structures during the kth shaking. It represents the uneven settlement index of the location of the mth building structure during the kth shaking and its value is not zero. Indicates the unilateral correspondence of the mth building structure during the kth shaking The maximum value of for The cosine value of The bigger, The smaller, It represents the minimum value of the damage accumulation degree corresponding to one side of the m-th building structure during the k-th shaking and its value is not zero. The larger the value is, the smaller the uneven settlement index of the location of the mth building structure during the kth shaking is than the overall uneven settlement of all building structures during the kth shaking. The bigger, The smaller the The larger it is, the stronger the earthquake resistance of the m-th building structure during the k-th shaking.

[0052] When external forces such as earthquakes or wind act on building structures, there is a situation of spatial extension. That is, the shaking caused by a certain external force may cause the building structures in the park to have a situation where the degree of harm to the building structures gradually decreases along a certain direction. Therefore, it is necessary to analyze the danger level of each building structure when a single shaking occurs in combination with the seismic resistance of each building structure.

[0053] Step 104, determining the danger level of the building structure based on the earthquake resistance performance index.

[0054] The danger level of a building structure reflects the degree of harm to the building structure caused by external forces.

[0055] In some embodiments, the danger level of the building structure is determined based on the seismic performance index according to the following formula: ; In the formula, It indicates the danger level of the mth building structure when it shakes for the kth time, reflecting the degree of damage to the building structure caused by external forces. It represents the seismic performance index of the m-th building structure during the k-th shaking. It represents the maximum value of the seismic performance index of all building structures during the kth shaking and its value is not zero. It indicates the distance between the mth building structure and the minimum value of the seismic performance index of all building structures during the kth shaking, which can indirectly reflect whether the mth building structure is close to the end of the extension influence of the external force during the kth shaking. The larger the value, the closer the mth building structure is to the end of the extension influence of the external force. It indicates that the minimum value of the seismic performance index of all building structures during the k-th shaking corresponds to the direction vector of the building structure pointing to the maximum value of the seismic performance index corresponding to the building structure. The minimum value of the seismic performance index of all building structures during the k-th shaking corresponds to the direction of the building structure pointing to the maximum value of the seismic performance index corresponding to the building structure. The direction is that the building structure with poor seismic resistance points to the building structure with strong seismic resistance, which indirectly reflects the extension direction of the external force damage to the building structure, that is, the direction in which the external force decreases. The direction vector of the minimum value of the seismic performance index of all building structures during the k-th shaking pointing to the m-th building structure can reflect the orientation of the m-th building structure relative to the minimum value of the seismic performance index during the k-th shaking. for and The cosine value of the angle between the two is not zero. The larger the value, the and The smaller the angle is, the further away the m-th building structure is from the building structure that is greatly affected by the external force during the k-th shaking, and the closer it is to the end of the extension of the external force. The bigger, The bigger, The smaller it is, the greater the degree of damage to the building structure caused by the external force. The bigger.

[0056] Step 105, based on the degree of danger, determine the data collection frequency of the inclination sensor and the static level.

[0057] The greater the danger level, the more it is necessary to increase the data collection frequency of the inclination sensor and the static level, so as to grasp the impact of external forces on the building structure more timely.

[0058] In some embodiments, the data acquisition frequency of the inclination sensor and the static level is determined according to the following formula: ; In the formula, represents the data collection frequency of the inclination sensor and static level of the mth building structure after the kth shaking occurs, represents the data acquisition frequency of the inclination sensor and static level of the mth building structure before adjustment, For the general Normalized value normalized to (0,1). The larger the value, the greater the degree of damage to the building structure caused by the external force. The larger it is, the more you need to increase the data collection frequency of the inclination sensor and static level.

[0059] In some embodiments, the method further comprises step 106: In response to the normalized value of the danger level of the building structure being greater than the danger threshold, an alarm message that the building structure needs maintenance is output, and the inclination sensor and the static level of the building structure are adjusted to the highest data acquisition frequency.

[0060] If the normalized value of the danger level of the building structure is greater than the danger threshold, it means that the building structure is greatly affected by external forces and timely human intervention is required to maintain the building structure. In addition, the data acquisition frequency of the inclination sensor and the static level needs to be increased to timely grasp the influence of the external forces on the building structure. Therefore, an alarm message of the building structure to be maintained is output, and the inclination sensor and the static level of the building structure are adjusted to the highest data acquisition frequency.

[0061] In some embodiments, the danger threshold may be 0.5.

[0062] In some embodiments, the highest data collection frequency may be once per second.

[0063] In summary, the present invention provides a method for monitoring the seismic performance of a building structure, which can comprehensively consider the impact of the accumulated damage of the building structure and the uneven settlement on the building structure, thereby improving the accuracy of seismic performance monitoring.

[0064] In a second aspect, the present invention provides a device for monitoring the seismic performance of a building structure, which uses a method for monitoring the seismic performance of a building structure according to the first aspect for monitoring.

[0065] In summary, the present invention provides a device for monitoring the seismic performance of a building structure, which can comprehensively consider the impact of the accumulated damage of the building structure and the uneven settlement on the building structure, thereby improving the accuracy of seismic performance monitoring.

[0066] In a third aspect, the present invention provides a building structure seismic performance monitoring system, see Figure 2 The system comprises: The acquisition module 201 is used to acquire the inclination data detected by the inclination sensor and the settlement data detected by the static level. The inclination sensor is installed at the corner point of each floor of the building structure, and the static level is installed around the building structure.

[0067] The first determination module 202 is used to determine the damage accumulation degree of the building structure based on the inclination data.

[0068] The second determination module 203 is used to determine the seismic performance index of the building structure based on the damage accumulation degree and the settlement data.

[0069] The third determination module 204 is used to determine the danger level of the building structure based on the earthquake resistance performance index.

[0070] The fourth determination module 205 is used to determine the data collection frequency of the inclination sensor and the static level based on the degree of danger.

[0071] In summary, the present invention provides a system for monitoring the seismic performance of a building structure, which can comprehensively consider the impact of the accumulated damage of the building structure and the uneven settlement on the building structure, thereby improving the accuracy of seismic performance monitoring.

[0072] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0073] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

Claims

1. A method for monitoring the seismic performance of a building structure, characterized in that: The method comprises: Step 101, obtaining inclination data detected by an inclination sensor and settlement data detected by a static level, wherein the inclination sensor is installed at a corner point of each floor of the building structure, and the static level is installed around the building structure; Step 102, determining the damage accumulation degree of the building structure based on the inclination data; Step 103, determining the seismic performance index of the building structure based on the damage accumulation degree and the settlement data; Step 104, determining the danger level of the building structure based on the seismic performance index; Step 105: determining the data collection frequency of the inclination sensor and the static level based on the risk level.

2. A method for monitoring seismic performance of a building structure according to claim 1, characterized in that: The step 102 includes: Step 1021, based on the inclination angle data, determining the difference in inclination angles of a single position of the building structure at two adjacent moments, wherein the single position of the building structure is a position corresponding to a corner point of each floor; Step 1022: In response to the difference between the tilt angles of two adjacent moments at a single position of the building structure being positive, the later moment between the two adjacent moments is taken as the starting moment of the kth shaking; in response to the difference between the tilt angles of two adjacent moments at a single position of the building structure being negative, the earlier moment between the two adjacent moments is taken as the moment when the kth shaking occurs with the maximum shaking; and before the moment when the k+1th shaking occurs, the moment when the tilt angle has the minimum value is taken as the ending moment of the kth shaking; Step 1023, determining the shaking direction vector of each moment during each shaking process of a single position of the building structure, wherein the shaking direction vector is a vector whose tilt direction of the building structure points to the vertical direction. , i represents the serial number of a single position of the building structure; Step 1024: The sum of the shaking direction vectors of all the single positions corresponding to one side of the building structure at each moment during each shaking process is taken as the shaking direction vector of the building structure at each moment during each shaking process. , the unilateral shaking direction vector of the building structure at each moment during each shaking process The angle with the vertical direction is , the single side of the building structure is a single vertical angle line of the building structure, and z represents the serial number of the single side of the building structure; Step 1025, based on the shaking direction vector of each moment during each shaking process of a single position of the building structure , determine the angle of inclination direction at the start and end of each shaking process of a single location of the building structure ,in, represents the tilt direction vector of the i-th position of the building structure at the start of the k-th shaking, represents the tilt direction vector of the i-th position of the building structure at the end time of the k-th shaking, where k represents the shaking number; Step 1026, determining a deformation recovery index of one side of the building structure; Step 1027: Determine the damage accumulation degree of the building structure based on the deformation recovery index of one side of the building structure.

3. A method for monitoring seismic performance of a building structure according to claim 2, characterized in that: The deformation recovery index of one side of the building structure is determined according to the following formula: ； In the formula, It represents the deformation recovery index of the kth shaking of the zth side of the current building structure. represents the maximum tilt angle of all single positions corresponding to the z-th side at the start of the k-th shaking, for The sine value of represents the maximum value of the tilt angle of all single positions corresponding to the z-th side at the start and end time of the k-th shaking, It represents the minimum value of the angle of the tilt direction of all single positions corresponding to the z-th side at the start and end time of the k-th shaking.

4. A method for monitoring seismic performance of a building structure according to claim 3, characterized in that: The damage accumulation degree of the building structure is determined according to the following formula: ； ； In the formula, It represents the difference between the deformation recovery index of the kth shaking of the current building structure on the zth side and the deformation recovery index of the k-1th shaking. It represents the deformation recovery index of the k-1th shaking of the zth side of the current building structure. It indicates the damage accumulation degree of the current building structure at the kth shaking of the zth side. It represents the deformation recovery index of the kth shaking of the zth side of the current building structure. Indicates the corresponding values ​​of all adjacent moments on the z-th side of the current building structure The mean of .

5. A method for monitoring seismic performance of a building structure according to claim 2, characterized in that: Step 103 includes: Step 1031, according to the following formula, based on the settlement data, determine the uneven settlement index of the location of the building structure at the current moment: ； In the formula, It represents the uneven settlement index of the location of the mth building structure at the current moment. It represents the mean of all detected settlement data around the m-th building structure at the current moment. It represents the range of all detected settlement data around the m-th building structure at the current moment. It represents the mean of all detected settlement data around all building structures at the current moment, and m represents the number of building structures; Step 1032, determine the seismic performance index of the building structure at each shaking at the current moment according to the following formula: ； In the formula, It represents the seismic performance index of the m-th building structure during the k-th shaking. represents the mean value of the uneven settlement index of all building structures at corresponding positions during the kth shaking. It represents the uneven settlement index of the location of the mth building structure during the kth shaking. Indicates the unilateral correspondence of the mth building structure during the kth shaking The maximum value of for The cosine value of It represents the minimum value of the corresponding damage accumulation degree on one side of the m-th building structure during the k-th shaking.

6. A method for monitoring seismic performance of a building structure according to claim 5, characterized in that: According to the following formula, the danger level of the building structure is determined based on the seismic performance index: ； In the formula, It indicates the danger level of the m-th building structure when it shakes for the kth time. It represents the seismic performance index of the m-th building structure during the k-th shaking. represents the maximum value of the seismic performance index of all building structures during the kth shaking. It represents the distance from the mth building structure to the minimum value of the seismic performance index of all building structures during the kth shaking. Indicates that the minimum value of the seismic performance index of all building structures during the kth shaking corresponds to the direction vector of the building structure pointing to the maximum value of the seismic performance index of the building structure, The minimum value of the seismic performance index of all building structures during the kth shaking corresponds to the direction vector pointing to the mth building structure. for and The cosine of the angle between .

7. A method for monitoring seismic performance of a building structure according to claim 6, characterized in that: Determine the data acquisition frequency of the inclination sensor and static level according to the following formula: ； In the formula, represents the data collection frequency of the inclination sensor and static level of the mth building structure after the kth shaking occurs, represents the data acquisition frequency of the inclination sensor and static level of the mth building structure before adjustment, For the general Normalized to (0,1) normalized value, Indicates rounding up.

8. A method for monitoring seismic performance of a building structure according to claim 7, characterized in that: The method further comprises step 106: In response to the normalized value of the danger level of the building structure being greater than the danger threshold, an alarm message that the building structure needs maintenance is output, and the inclination sensor and the static level of the building structure are adjusted to the highest data acquisition frequency.

9. A building structure seismic performance monitoring device, characterized in that: The device uses the above-mentioned method for monitoring the seismic performance of a building structure as described in any one of claims 1-8 for monitoring.

10. A building structure seismic performance monitoring system, characterized in that: The system comprises: An acquisition module, used to acquire inclination data detected by an inclination sensor and settlement data detected by a static level, wherein the inclination sensor is installed at a corner point of each floor of the building structure, and the static level is installed around the building structure; A first determination module is used to determine the damage accumulation degree of the building structure based on the inclination data; A second determination module is used to determine the seismic performance index of the building structure based on the damage accumulation degree and the settlement data; A third determination module is used to determine the danger level of the building structure based on the seismic performance index; The fourth determination module is used to determine the data collection frequency of the inclination sensor and the static level based on the risk level.

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