A method, device and system for monitoring the seismic performance of a building structure

Abstract

The present invention relates to the technical field of vibration testing, and specifically relates to a method, device and system for monitoring the seismic performance of building structures. Based on the inclination data, the degree of damage accumulation of the building structure is determined, so as to obtain the morphological recovery ability of the building structure after shaking; based on the degree of damage accumulation and settlement data, the seismic performance index of the building structure is determined to obtain the seismic capacity of the building structure; based on the seismic performance index, the degree of danger of the building structure is determined, so as to obtain the degree of harm of external forces to the building structure; based on the degree of danger, the data acquisition frequencies of the inclination sensors and the static level gauges are determined, so as to more timely grasp the influence of external forces on the building structure. This method can comprehensively consider the influence of cumulative damage and uneven settlement of the building structure on the building structure, and improve the accuracy of seismic performance monitoring.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration testing, and particularly to a method, device and system for monitoring the seismic performance of building structures. Background Art

[0002] With the accelerating urbanization speed, the number and volume of buildings are increasing. To reduce the damage caused by natural disasters such as earthquakes to buildings and ensure the safety of people's lives and property, it is necessary to endow building structures with good seismic resistance capabilities, thereby maintaining the stability of the building body and improving the ability of buildings to withstand external force impacts.

[0003] Currently, 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. Based on the morphological data measured each time, the seismic performance of the building structure in the corresponding state is analyzed. However, since the building structure may accumulate damage when coping with external forces (such as earthquakes, typhoons, etc.), resulting in a significant reduction in its seismic performance, and there may be construction conditions in the adjacent positions, leading to uneven settlement of the building structure foundation, which affects the seismic performance of the building structure, etc., thus affecting the accuracy of the seismic performance monitoring of the building structure. Therefore, it is urgent to develop a method, device 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 seismic performance monitoring, the purpose of the present invention is to provide a method, device and system for monitoring the seismic performance of building structures. The specific technical solutions adopted are as follows:

[0005] In the first aspect, the present invention provides a method for monitoring the seismic performance of building structures, the method comprising:

[0006] Step 101, obtaining the inclination data detected by an inclination sensor and the settlement data detected by a static level. The inclination sensor is installed at the corner points of each floor of the building structure, and the static level is installed around the building structure;

[0007] Step 102, determining the degree of damage accumulation of the building structure based on the inclination data;

[0008] Step 103, determining the seismic performance index of the building structure based on the degree of damage accumulation and the settlement data;

[0009] Step 104, determining the degree of danger of the building structure based on the seismic performance index;

[0010] Step 105, determining the data acquisition frequency of the inclination sensor and the static level based on the degree of danger.

[0011] In some embodiments, step 102 includes:

[0012] Step 1021: Based on the inclination data, determine the difference in the inclination angles of two adjacent moments at a single position of the building structure, where the single position of the building structure is the position corresponding to each corner point on each floor;

[0013] Step 1022: In response to the difference in the inclination angles of two adjacent moments at a single position of the building structure being positive, take the later moment of the two adjacent moments as the starting moment of the k-th shake; in response to the difference in the inclination angles of two adjacent moments at a single position of the building structure being negative, take the earlier moment of the two adjacent moments as the moment when the maximum shake occurs in the k-th shake. Before the occurrence moment of the (k + 1)-th shake, the moment when the minimum inclination angle appears is the end moment of the k-th shake;

[0014] Step 1023: Determine the shaking direction vector at each moment during each shake of a single position of the building structure, where the shaking direction vector is the vector from the inclination direction of the building structure to the vertical direction , where i represents the serial number of a single position of the building structure;

[0015] Step 1024: Take the sum of the shaking direction vectors at each moment during each shake of all single positions corresponding to one side of the building structure as the shaking direction vector of one side of the building structure during each shake , the shaking direction vector of one side of the building structure at each moment during each shake The angle with the vertical direction is , where one side of the building structure is a single vertical edge line of the building structure, and z represents the serial number of one side of the building structure;

[0016] Step 1025: Based on the shaking direction vectors at each moment during each shake of a single position of the building structure , determine the included angle between the inclination directions at the start and end moments of each shake of a single position of the building structure , where represents the shaking direction vector of the i-th position of the building structure at the start moment of the k-th shake, represents the shaking direction vector of the i-th position of the building structure at the end moment of the k-th shake, and k represents the serial number of the shake times;

[0017] Step 1026: Determine the deformation recovery index of one side of the building structure;

[0018] Step 1027: Based on the deformation recovery index of one side of the building structure, determine the degree of damage accumulation of the building structure.

[0019] In some embodiments, according to the following formula, determine the deformation recovery index of one side of the building structure:

[0020] ;

[0021] Wherein, represents the deformation recovery index of the z-th side of the current building structure at the k-th swaying, represents the maximum value of the inclination angles of all individual positions corresponding to the z-th side at the starting moment of the k-th swaying, is the sine value of, represents the maximum value of the included angles of the inclination directions of all individual positions corresponding to the z-th side at the starting and ending moments of the k-th swaying, represents the minimum value of the included angles of the inclination directions of all individual positions corresponding to the z-th side at the starting and ending moments of the k-th swaying.

[0022] In some embodiments, according to the following formula, the degree of damage accumulation of the building structure is determined:

[0023] ;

[0024] ;

[0025] Wherein, represents the difference between the deformation recovery index of the z-th side of the current building structure at the k-th swaying and the deformation recovery index of the (k - 1)-th swaying, represents the deformation recovery index of the z-th side of the current building structure at the (k - 1)-th swaying, represents the degree of damage accumulation of the z-th side of the current building structure at the k-th swaying, represents the mean value of corresponding to all adjacent moments of the z-th side of the current building structure.

[0026] In some embodiments, step 103 includes:

[0027] Step 1031, according to the following formula, based on the settlement data, determine the non-uniform settlement index of the location where the building structure is located at the current moment:

[0028] ;

[0029] Wherein, represents the non-uniform settlement index of the location of the m-th building structure at the current moment, represents the mean value of all detected settlement data around the m-th building structure at the current moment, represents the range of all detected settlement data around the m-th building structure at the current moment, represents the mean value of all detected settlement data around all building structures at the current moment, and m represents the serial number of the building structure;

[0030] Step 1032, determine the seismic performance index of the building structure during each sway at the current moment according to the following formula:

[0031] ;

[0032] In the formula, represents the seismic performance index of the m-th building structure during the k-th sway, represents the average value of the differential settlement indexes at the corresponding positions of all building structures during the k-th sway, represents the differential settlement index at the position where the m-th building structure is located during the k-th sway, represents the maximum value corresponding to one side of the m-th building structure during the k-th sway of, is the cosine value of, represents the minimum value of the damage accumulation degree corresponding to one side of the m-th building structure during the k-th sway.

[0033] In some embodiments, determine the data acquisition frequency of the inclination sensor and the static level according to the following formula:

[0034] ;

[0035] In the formula, represents the risk level of the m-th building structure during the k-th sway, represents the seismic performance index of the m-th building structure during the k-th sway, represents the maximum value of the seismic performance indexes of all building structures during the k-th sway, represents the distance from the m-th building structure to the building structure corresponding to the minimum value of the seismic performance indexes of all building structures during the k-th sway, represents the direction vector from the building structure corresponding to the minimum value of the seismic performance indexes of all building structures to the building structure corresponding to the maximum value of the seismic performance indexes during the k-th sway, represents the direction vector from the building structure corresponding to the minimum value of the seismic performance indexes of all building structures to the m-th building structure during the k-th sway, is and the cosine value of the included angle between.

[0036] In some embodiments, determine the data acquisition frequency of the inclination sensor and the static level according to the following formula:

[0037] ;

[0038] In the formula, Denote the data acquisition frequencies of the tilt sensors and the static level meters of the m-th building structure after the k-th sway occurs. Denote the data acquisition frequencies of the tilt sensors and the static level meters of the m-th building structure before adjustment. be The normalized value normalized to (0, 1).

[0039] In some embodiments, the method further includes step 106:

[0040] In response to the normalized value of the danger level of the building structure being greater than the danger threshold, output an alarm message indicating that the building structure needs maintenance, and adjust the tilt sensors and the static level meters of the building structure to the highest data acquisition frequency.

[0041] In a second aspect, the present invention provides a building structure seismic performance monitoring device, and the device monitors by using the building structure seismic performance monitoring method described in the first aspect above.

[0042] In a third aspect, the present invention provides a building structure seismic performance monitoring system, and the system includes:

[0043] An acquisition module, configured to acquire tilt data detected by tilt sensors and settlement data detected by static level meters, where the tilt sensors are installed at the corner points of each floor of the building structure, and the static level meters are installed around the building structure;

[0044] A first determination module, configured to determine the degree of damage accumulation of the building structure based on the tilt data;

[0045] A second determination module, configured to determine the seismic performance index of the building structure based on the degree of damage accumulation and the settlement data;

[0046] A third determination module, configured to determine the danger level of the building structure based on the seismic performance index;

[0047] A fourth determination module, configured to determine the data acquisition frequencies of the tilt sensors and the static level meters based on the danger level.

[0048] The present invention has the following beneficial effects:

[0049] 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 an inclination sensor and the settlement data detected by a static level meter, so as to master the inclination angle of each corner point of the building structure in the vertical direction and the longitudinal displacement of the location where the building structure is located. Then, based on the inclination data, the degree of damage accumulation of the building structure is determined, so as to obtain the morphological recovery ability of the building structure after shaking. Furthermore, based on the degree of damage accumulation 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 degree of danger of the building structure is determined to obtain the degree of harm of the external force to the building structure. Finally, based on the degree of danger, the data acquisition frequencies of the inclination sensor and the static level meter are determined, so as to more timely master the influence of the external force on the building structure. This method can comprehensively consider the influence of the cumulative 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

[0050] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0051] Figure 1 It is a flowchart of a method for monitoring the seismic performance of a building structure provided by an embodiment of the present invention;

[0052] Figure 2 It 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 OF THE EMBODIMENTS

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0055] It should be noted that, to ensure the significance of the calculation results, in the embodiments of the present invention, when performing fractional operations, in the case of a denominator of 0, a tuning parameter factor greater than 0 needs to be added to the denominator to prevent the denominator from being 0. The value of the tuning parameter factor is set by the implementer according to the actual situation, and this application does not make special restrictions.

[0056] The following specifically describes the specific solutions 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.

[0057] In a first aspect, the present invention provides a method for monitoring the seismic performance of a building structure. Refer to Figure 1 , the method includes:

[0058] Step 101, obtain the inclination angle data detected by the inclination angle sensor and the settlement amount data detected by the static level. The inclination angle sensor is installed at the corner points of each floor of the building structure, and the static level is installed around the building structure.

[0059] The inclination angle data can reflect the inclination angle of the corner points of each floor of the building structure in the vertical direction, and the settlement amount data can reflect the longitudinal displacement of the location where the building structure is located.

[0060] In some embodiments, the initial data acquisition frequency of the inclination angle sensor and the static level can be once per minute.

[0061] Since the building structure will shake under the influence of external forces (such as earthquakes, wind forces, etc.), and normally the building structure has a certain toughness, enabling it to absorb the energy of external force impacts through uniform and appropriate deformations, thereby maintaining its own structural stability. The uniform and appropriate deformations will cause changes in the inclination angle data detected by the inclination angle sensors at the corner points of the building structure and the settlement amount data detected by the static levels around the building structure. Among them, the shaking amplitudes at different positions inside the building structure are relatively similar. Therefore, the damage accumulation situation and seismic situation of the building structure are analyzed using the inclination angle data and the settlement amount data.

[0062] It should be noted that both the inclination angle data and the settlement amount data are time series data, which can capture the changes during each shaking process of the building structure.

[0063] Step 102, determine the degree of damage accumulation of the building structure based on the inclination angle data.

[0064] During the shaking process, the building structure absorbs the energy of external impacts to maintain its stability. However, with the increase in the frequency of external impacts and the influence of impact intensity, there is a certain accumulation of damage in the shaking of the building structure. Along with the increase in the degree of damage accumulation, the ability of the building structure to withstand external impacts becomes worse. For example, under normal circumstances, the shape of the building structure can return to exactly the same as before shaking after shaking. With the accumulation of damage, the shape recovery ability of the building structure may gradually weaken. The degree of damage accumulation in the building structure can reflect the shape recovery ability of the building structure after shaking.

[0065] In some embodiments, step 102 includes:

[0066] Step 1021: Based on the inclination data, determine the difference in the inclination angles of two adjacent moments at a single position of the building structure, where the single position of the building structure is the position corresponding to each corner point on each floor.

[0067] Since there is no shaking of the building structure in the stable state, the results measured by the inclination sensors at the same detection position are the same for multiple consecutive times. When the building structure starts to shake, the inclination angle begins to increase and gradually returns to the original state after reaching the maximum shaking amplitude. Therefore, determining the difference in the inclination angles of two adjacent moments at a single position of the building structure facilitates the analysis of the shaking period of each single position in the building structure.

[0068] Step 1022: In response to the difference in the inclination angles of two adjacent moments at a single position of the building structure being positive, take the later moment of the two adjacent moments as the starting moment of the k-th shaking. In response to the difference in the inclination angles of two adjacent moments at a single position of the building structure being negative, take the earlier moment of the two adjacent moments as the moment when the maximum shaking occurs in the k-th shaking. Before the occurrence of the (k + 1)-th shaking, the moment when the minimum inclination angle appears is the end moment of the k-th shaking.

[0069] The positive or negative value of the difference in the inclination angles of two adjacent moments at a single position can reflect the start and end moments of the shaking and the moment when the maximum shaking occurs.

[0070] In some embodiments, according to the following formula, calculate the difference in the inclination angles of two adjacent moments at a single position of the building structure:

[0071] ;

[0072] In the formula, represents the inclination angle at the (t + 1)-th moment, represents the inclination angle at the t-th moment, represents the difference between the inclination angle at the (t + 1)-th moment and the inclination angle at the t-th moment.

[0073] Step 1023: Determine the shaking direction vector at each moment during each shaking process of a single position of the building structure. The shaking direction vector is the vector from the inclination direction of the building structure to the vertical direction. , where i represents the serial number of a single position of the building structure.

[0074] 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.

[0075] In some embodiments, the earliest moment when shaking first occurs at all positions of the building structure during each shaking is used as the earliest shaking occurrence moment of the building structure for this shaking, and the latest moment when shaking ends at all positions of the building structure during each shaking is used as the latest shaking end moment of the building structure for this shaking.

[0076] Step 1024: Take the sum of the shaking direction vectors at each moment during each shaking process of all single positions corresponding to one side of the building structure as the shaking direction vector of one side of the building structure at each moment during each shaking process. , and the shaking direction vector of one side of the building structure at each moment during each shaking process The angle with the vertical direction is , where one side of the building structure is a single vertical edge line of the building structure, and z represents the serial number of one side of the building structure.

[0077] The shaking direction vector of one side of the building structure can overall reflect the shaking direction of one side of the building structure. The shaking direction vector of one side of the building structure at each moment during each shaking process The angle with the vertical direction can reflect the degree of deviation of one side of the building structure from the vertical.

[0078] Step 1025: Based on the shaking direction vector at each moment during each shaking process of a single position of the building structure , determine the angle between the inclination directions at the start and end moments of shaking during each shaking process of a single position of the building structure , where represents the inclination direction vector of the i-th position of the building structure at the start moment of the k-th shaking, represents the inclination direction vector of the i-th position of the building structure at the end moment of the k-th shaking, and k represents the serial number of the shaking times.

[0079] The angle between the inclination directions at the start and end moments of shaking during a certain shaking process of a single position of the building structure is the angle between the inclination direction vectors at the start and end moments of this shaking process of a single position of the building structure, which can indirectly reflect the recovery situation of a single position of the building structure during this shaking. The smaller this angle is, the better the recovery situation of a single position of the building structure during this shaking.

[0080] Under normal circumstances, a building structure has a relatively strong ability to control its own deformation, and the sway amplitudes at different positions inside it are relatively uniform. However, with the accumulation of damage, there may be a relatively intense local sway, resulting in a relatively large difference in the degree of deformation at the corresponding position compared to the other positions. Therefore, it is necessary to master the degree of deformation recovery on one side of the building structure.

[0081] Step 1026: Determine the deformation recovery index of one side of the building structure.

[0082] 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.

[0083] In some embodiments, the deformation recovery index of one side of the building structure is determined according to the following formula:

[0084] ;

[0085] In the formula, represents the deformation recovery index of the z-th side of the current building structure during the k-th sway, which reflects the degree of deformation recovery of the z-th side of the current building structure during the k-th sway and has a non-zero value. represents the maximum value of the inclination angles of all individual positions corresponding to the z-th side at the starting moment of the k-th sway. The smaller this value is, the closer the shape of the current building structure on this side after deformation is to the normal shape. is the sine value of to quantify the degree of closeness of the shape of the current building structure on this side after deformation to the normal shape. represents the maximum value of the included angles of the inclination directions of all individual positions corresponding to the z-th side at the start and end moments of the k-th sway. The smaller this value is, the better the overall recovery of all individual positions corresponding to the z-th side. reflects and the difference in the degree of deformation recovery and has a non-zero value. The smaller this value is, the smaller the difference in the degree of deformation recovery of all individual positions corresponding to the z-th side. The larger is, the larger

[0086] Step 1027: Based on the deformation recovery index of one side of the building structure, determine the degree of damage accumulation of the building structure.

[0087] Determine the degree of damage accumulation of the building structure to master the shape recovery ability of the building structure after swaying.

[0088] In some embodiments, the degree of damage accumulation of the building structure is determined according to the following formula:

[0089] ;

[0090] ;

[0091] In the formula, represents the difference between the deformation recovery index of the z-th side of the current building structure at the k-th sway and the deformation recovery index of the (k - 1)-th sway, reflecting the difference in the influence of the previous and current sways on the deformation recovery ability of the building structure. represents the deformation recovery index of the z-th side of the current building structure at the (k - 1)-th sway, reflecting the degree of deformation recovery of the z-th side of the current building structure at the (k - 1)-th sway. represents the degree of damage accumulation of the z-th side of the current building structure at the k-th sway, which can reflect the ability to master the morphological recovery of the building structure after swaying. represents the mean value of corresponding to all adjacent moments of the z-th side of the current building structure, reflecting the overall situation of the differences in the deformation recovery indices of all adjacent moments of the z-th side of the current building structure up to now and the value is not zero. The larger is, the greater the difference between the deformation recovery index of the z-th side of the current building structure at the k-th sway and the deformation recovery index of the (k - 1)-th sway compared to the overall situation of the differences in the deformation recovery indices of all adjacent moments of the z-th side of the current building structure. When the building structure sways, if the difference between the deformation recovery index of this side and the overall situation of the differences in the deformation recovery indices of all adjacent moments of this side of the current building structure is larger (i.e., is larger) and the deformation recovery index of this side of the current building structure at this sway is smaller, then the degree of damage accumulation of this side of the current building structure at this sway is greater, and the morphological recovery ability of the building structure after swaying is worse.

[0092] Since the seismic performance of the 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 and 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 has a large degree of sway, and the sway degrees at different positions of the building structure are unstable (i.e., the degree of damage accumulation is large), then the seismic performance of the current building structure is poor.

[0093] Step 103, based on the degree of damage accumulation and the settlement data, determine the seismic performance index of the building structure.

[0094] The seismic performance index of the building structure can reflect the seismic capacity of the building structure.

[0095] In some embodiments, Step 103 includes:

[0096] Step 1031: Based on the settlement data, determine the differential settlement index of the location where the building structure is located at the current moment according to the following formula:

[0097] ;

[0098] In the formula, represents the differential settlement index of the location where the m-th building structure is located at the current moment, reflecting the differential settlement situation of the location where the m-th building structure is located at the current moment. represents the mean value of all detected settlement data around the m-th building structure at the current moment, reflecting the overall situation of all detected settlement data around the m-th building structure at the current moment. represents 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. represents the mean value of all detected settlement data around all building structures at the current moment and the value is not zero, reflecting the overall situation of all detected settlement data around all building structures at the current moment. m represents the serial number of the building structure. The larger [[ ]] is, the greater the settlement degree of the m-th building structure compared with all building structures at the current moment. When [[ ]] is also larger, the differential settlement index [[ ]] of the location where the m-th building structure is located at the current moment is larger, and the differential settlement degree of the location where the m-th building structure is located at the current moment is serious.

[0099] Step 1032: Determine the seismic performance index of the building structure during each swaying at the current moment according to the following formula:

[0100] ;

[0101] In the formula, represents the seismic performance index of the m-th building structure during the k-th swaying, reflecting the seismic resistance ability of the m-th building structure during the k-th swaying. represents the mean value of the differential settlement indexes of all building structures at the corresponding positions during the k-th swaying, indicating the overall differential settlement degree of all building structures during the k-th swaying. represents the differential settlement index of the location where the m-th building structure is located during the k-th swaying and the value is not zero. represents the maximum value of the unilateral correspondence of the m-th building structure during the k-th swaying . is 's cosine value. The larger [[ ]] is, the smaller [[ ]] is. It represents the minimum value of the unilateral corresponding damage accumulation degree of the m-th building structure during the k-th shaking, and the value is not zero. The larger it is, the smaller the differential settlement index of the location where the m-th building structure is located during the k-th shaking compared to the overall differential settlement degree of all building structures during the k-th shaking. The larger it is, the smaller it is, then the larger it is, the stronger the seismic resistance ability of the m-th building structure during the k-th shaking.

[0102] When external forces such as earthquakes or wind act on building structures, there is a situation of spatial extension and expansion. That is, the shaking caused by a certain external force may lead to a situation where the degree of harm to the building structures in the park gradually decreases along a certain direction. Therefore, it is necessary to analyze the danger degree of each building structure during a single shaking by combining the seismic resistance ability of each building structure.

[0103] Step 104: Determine the danger degree of the building structure based on the seismic performance index.

[0104] The danger degree of the building structure reflects the degree of harm of external forces to the building structure.

[0105] In some embodiments, according to the following formula, the danger degree of the building structure is determined based on the seismic performance index:

[0106] ;

[0107] In the formula, represents the danger degree of the m-th building structure during the k-th shaking, reflecting the degree of harm of external forces to the building structure. represents the seismic performance index of the m-th building structure during the k-th shaking. represents the maximum value of the seismic performance indexes of all building structures during the k-th shaking, and the value is not zero. represents the distance from the m-th building structure to the building structure corresponding to the minimum value of the seismic performance indexes of all building structures during the k-th shaking, which can indirectly reflect whether the m-th building structure is close to the end of the external force extension effect during the k-th shaking. The larger this value is, the closer the m-th building structure is to the end of the external force extension effect. represents the direction vector from the building structure corresponding to the minimum value of the seismic performance indexes of all building structures during the k-th shaking to the building structure corresponding to the maximum value of the seismic performance indexes. The direction from the building structure corresponding to the minimum value of the seismic performance indexes of all building structures to the building structure corresponding to the maximum value of the seismic performance indexes during the k-th shaking is the direction from the building structure with poor seismic resistance ability to the building structure with strong seismic resistance ability, indirectly reflecting the extension trend of the harm of external forces to the building structure, that is, the direction in which the external force decreases. It represents the direction vector of the minimum seismic performance index of all building structures during the k-th shaking, pointing to the m-th building structure, which can reflect the orientation of the m-th building structure relative to the building structure corresponding to the minimum seismic performance index during the k-th shaking. is and the cosine value of the included angle, and the value is not zero. The larger this value is, it indicates that and the included angle is smaller. During the k-th shaking, the m-th building structure is farther away from the building structure affected greatly by external forces and closer to the end of the extended influence of the external force. The larger is, the smaller it is, then the greater the harm degree of the external force to the building structure, that is, is larger.

[0108] Step 105: Based on the degree of danger, determine the data acquisition frequencies of the inclinometer and the static level.

[0109] The greater the degree of danger, the more necessary it is to increase the data acquisition frequencies of the inclinometer and the static level, so as to more timely grasp the influence of external forces on the building structure.

[0110] In some embodiments, according to the following formula, determine the data acquisition frequencies of the inclinometer and the static level:

[0111] ;

[0112] In the formula, represents the data acquisition frequencies of the inclinometer and the static level of the m-th building structure after the k-th shaking occurs, represents the data acquisition frequencies of the inclinometer and the static level of the m-th building structure before adjustment, is the normalized value normalized to (0, 1). The larger is, it indicates that the greater the harm degree of the external force to the building structure, then

[0113] In some embodiments, the method further includes step 106:

[0114] In response to the normalized value of the degree of danger of the building structure being greater than the danger threshold, output an alarm message that the building structure needs to be maintained, and adjust the inclinometer and the static level of the building structure to the highest data acquisition frequency.

[0115] If the normalized value of the risk level of the building structure is greater than the risk threshold, it indicates that the building structure is greatly affected by external forces. Timely manual intervention is required to maintain the building structure, and the data acquisition frequencies of the tilt sensors and the static level gauges need to be increased to promptly grasp the impact of external forces on the building structure. Therefore, an alarm message indicating that the building structure needs to be maintained is output, and the tilt sensors and the static level gauges of the building structure are adjusted to the highest data acquisition frequency.

[0116] In some embodiments, the risk threshold can be 0.5.

[0117] In some embodiments, the highest data acquisition frequency can be once per second.

[0118] In summary, a method for monitoring the seismic performance of a building structure provided by the present invention can comprehensively consider the cumulative damage and uneven settlement of the building structure on the building structure, and improve the accuracy of seismic performance monitoring.

[0119] In a second aspect, the present invention provides a device for monitoring the seismic performance of a building structure, and this device uses the method for monitoring the seismic performance of a building structure in the first aspect above for monitoring.

[0120] In summary, a device for monitoring the seismic performance of a building structure provided by the present invention can comprehensively consider the cumulative damage and uneven settlement of the building structure on the building structure, and improve the accuracy of seismic performance monitoring.

[0121] In a third aspect, the present invention provides a system for monitoring the seismic performance of a building structure. Refer to Figure 2 , and this system includes:

[0122] An acquisition module 201, configured to acquire the tilt data detected by the tilt sensors and the settlement data detected by the static level gauges. The tilt sensors are installed at the corner points of each floor of the building structure, and the static level gauges are installed around the building structure.

[0123] A first determination module 202, configured to determine the degree of damage accumulation of the building structure based on the tilt data.

[0124] A second determination module 203, configured to determine the seismic performance index of the building structure based on the degree of damage accumulation and the settlement data.

[0125] A third determination module 204, configured to determine the risk level of the building structure based on the seismic performance index.

[0126] A fourth determination module 205, configured to determine the data acquisition frequencies of the tilt sensors and the static level gauges based on the risk level.

[0127] In summary, a seismic performance monitoring system for building structures provided by the present invention can comprehensively consider the cumulative damage and uneven settlement of building structures on the building structures, and improve the accuracy of seismic performance monitoring.

[0128] It should be noted that the above-mentioned sequence of embodiments of the present invention is only for description and does not represent the superiority or inferiority 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.

[0129] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. 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 acquisition frequency of the inclination sensor and the static level based on the risk level; 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.

2. A method for monitoring seismic performance of a building structure according to claim 1, 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.

3. A method for monitoring seismic performance of a building structure according to claim 2, 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 .

4. A method for monitoring seismic performance of a building structure according to claim 1, 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.

5. A method for monitoring seismic performance of a building structure according to claim 4, 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 .

6. A method for monitoring seismic performance of a building structure according to claim 5, 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.

7. A method for monitoring seismic performance of a building structure according to claim 6, 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.

8. 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 1-7 for monitoring.

9. 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; a fourth determination module, configured to determine a data acquisition frequency of a tilt sensor and a static level based on the risk level; The first determining module comprises: 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.

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