A method and system for monitoring the seismic isolation and vibration reduction status of a subway cover

Abstract

The present invention relates to the technical field of seismic isolation and vibration reduction, and specifically to a method and system for monitoring the seismic isolation and vibration reduction status of a subway cover, which obtains vibration and noise information of a seismic isolation and vibration reduction bearing, and compares and judges to generate a vibration and noise signal; based on the vibration and noise signal, the seismic isolation and vibration reduction bearing is judged for its vibration reduction performance to obtain a seismic isolation and vibration reduction bearing signal; based on the subway cover, regional division is performed to obtain the seismic isolation and vibration reduction bearing operation signal in each region to judge the seismic isolation status; based on the small independent influence signal of the seismic isolation and vibration reduction bearing and according to the abnormal performance information of the seismic isolation and vibration reduction bearing, the seismic isolation and vibration reduction bearing is positioned to determine the important monitored seismic isolation and vibration reduction bearing objects; the present invention ensures the healthy working state of the seismic isolation and vibration reduction bearing by real-time monitoring and processing of the operation process of the seismic isolation and vibration reduction bearing in the subway cover area, and ensures that the vibration of the adjacent cover buildings induced by the subway operation can be effectively controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic isolation and vibration reduction, and in particular to a method and system for monitoring the seismic isolation and vibration reduction status of a subway cover. Background Art

[0002] Land shortage is a common problem faced by urban development. The original regulations that prohibit the construction of buildings along the subway line to avoid the adverse effects of vibration are being broken. Buildings are getting closer and closer to the subway line, and are even built directly on the line. Metro overground property development (TOD) has become a new growth point in my country's architectural design market and a trend in future urban development. Beijing, Guangzhou, Shanghai, Shenzhen and other cities are actively exploring and building high-rise and super-high-rise buildings on the subway. For example, Guangzhou Metro plans to build 19 overground property depots in combination with existing subway lines and newly planned subway lines. But at the same time, people's requirements for quality of life and living quality are becoming more and more stringent than before. The vibration and noise generated by subway operation have become an environmental hazard that cannot be ignored. It is the vibration pollution that the public has the strongest reaction to, and it has posed a new challenge to the development of subway overground buildings.

[0003] Chinese patent CN113684941B discloses a low-frequency vibration isolation structure for a subway roof, comprising a three-dimensional vibration isolation layer, a support structure, a floor slab, and a vertical TMD vibration isolation device. Among them, a plurality of the support structures are arranged on the three-dimensional vibration isolation layer; at least two floors are arranged on the plurality of support structures at intervals along the up-down direction of the support structure and are located above the three-dimensional vibration isolation layer; and the vertical TMD vibration isolation device is provided on the floor slab.

[0004] In the prior art, the low-frequency seismic isolation and vibration reduction structure of the subway cover is a combination of a three-dimensional vibration isolation layer and a vertical TMD vibration reduction device, which reduces the vibration waves of the subway in a frequency band, effectively reduces the transmission of vibration waves to the upper structure, plays a good vibration reduction role, and effectively reduces the vertical vibration of the rail transit cover structure;

[0005] However, at present, it is impossible to monitor the operating status of the seismic isolation and vibration reduction structure in the subway superstructure area in real time, and effectively judge the abnormal status of the seismic isolation and vibration reduction device of the subway superstructure based on the obtained monitoring data, making it impossible to carry out timely and effective maintenance and adjustment of the seismic isolation and vibration reduction device to ensure the effectiveness of the isolation and vibration reduction device.

[0006] The present invention proposes a method and system for monitoring the seismic isolation and vibration reduction status of a subway superstructure, which has great research value and engineering significance for promoting the development of vibration control technology for super-high-rise structures of subway superstructures and improving the comfort of human living environment in urban rail transit superstructures. Summary of the invention

[0007] The purpose of the present invention is to provide a method and system for monitoring the seismic isolation and vibration reduction status of a subway cover. The technical problem solved by the present invention is that it is impossible to monitor the operating status of the seismic isolation and vibration reduction structure in the subway cover area in real time, and to effectively judge the abnormal status of the seismic isolation and vibration reduction of the subway cover based on the obtained monitoring data, making it impossible to carry out timely and effective maintenance on the seismic isolation and vibration reduction structure to ensure the working quality of the seismic isolation and vibration reduction structure.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A method for monitoring the seismic isolation and vibration reduction status of a subway cover, comprising the following steps:

[0010] Step 1: Obtain the vibration and noise information of the seismic isolation and vibration reduction bearing, make a comparison and judgment, and generate a vibration and noise signal;

[0011] The vibration and noise information includes the real-time amplitude and noise of the seismic isolation and vibration reduction bearing, and the vibration and noise signal includes the amplitude signal and the noise signal;

[0012] Step 2: Based on the vibration noise signal, the vibration reduction performance of the seismic isolation and vibration reduction bearing is evaluated to obtain the seismic isolation and vibration reduction bearing signal;

[0013] The seismic isolation and vibration reduction bearing signal includes a seismic isolation and vibration reduction bearing normal operation signal or a seismic isolation and vibration reduction bearing abnormal operation signal;

[0014] Step 3: Based on the subway cover, the area is divided, and the operation signal of the seismic isolation and vibration reduction bearing in each area is obtained to judge the seismic isolation status;

[0015] Step 4: Based on the small signal of the independent influence of the seismic isolation and vibration reduction bearing and the abnormal performance information of the seismic isolation and vibration reduction bearing, the seismic isolation and vibration reduction bearing is located to determine the seismic isolation and vibration reduction bearing objects that need to be monitored.

[0016] As a further solution of the present invention: in step 1, if the real-time amplitude of the seismic isolation and vibration reduction support is greater than or equal to the real-time amplitude threshold of the seismic isolation and vibration reduction support, an amplitude abnormality signal is generated;

[0017] If the real-time noise of the seismic isolation and vibration reduction bearing is greater than or equal to the real-time noise threshold of the seismic isolation and vibration reduction bearing, an amplitude abnormality signal is generated.

[0018] As a further solution of the present invention: in step 2, if the normal amplitude signal and the normal noise signal are obtained at the same time, it means that the seismic isolation and vibration damping support does not exceed the set standard range during operation, and a normal operation signal of the seismic isolation and vibration damping support is generated;

[0019] Otherwise, an abnormal operation signal of the seismic isolation and vibration reduction bearing is generated.

[0020] As a further solution of the present invention: in step 3, the seismic isolation and vibration reduction bearings of the subway cover are divided into a plurality of monitoring areas according to the region, and the operation signal of the seismic isolation and vibration reduction bearings in each monitoring area is obtained;

[0021] Based on the operation signal of the seismic isolation and vibration reduction bearing in the monitoring area, the adjacent influence value and the interval influence value are output, and the difference between the adjacent influence value and the interval influence value is made to obtain the phase-to-phase influence difference;

[0022] If the phase-to-phase influence difference is greater than or equal to the phase-to-phase influence difference threshold, a small independent influence signal of the isolation and vibration reduction bearing is generated.

[0023] As a further solution of the present invention: the calculation process of the adjacent influence value is:

[0024] Obtain sub-areas in the monitoring area where abnormal operation signals of seismic isolation and vibration reduction bearings are generated between adjacent seismic isolation and vibration reduction bearings, count the number of sub-areas, and mark them as adjacent influence values.

[0025] As a further solution of the present invention: the calculation process of the interval impact value is:

[0026] Obtain sub-areas in the monitoring area where there are non-adjacent isolation and vibration reduction bearings that all generate isolation and vibration reduction bearing operation abnormal signals, and count the number of sub-areas, which are marked as interval impact values.

[0027] As a further solution of the present invention: in step 4, the starting time sequence number and the abnormal performance sequence number of the same seismic isolation and vibration reduction bearing to be positioned are added together to obtain a comprehensive evaluation sequence number;

[0028] The isolation and vibration reduction bearing to be located corresponding to the minimum value of the comprehensive evaluation number shall be marked as the key monitoring object.

[0029] As a further solution of the present invention: obtaining the seismic isolation and vibration reduction bearings that generate the seismic isolation and vibration reduction bearing operation abnormality signal in the sub-area, and marking them as the seismic isolation and vibration reduction bearings to be located;

[0030] Setting an analysis cycle, obtaining the starting time of each isolation and vibration damping support to be positioned to generate an abnormal operation signal of the isolation and vibration damping support each time, obtaining the starting time of the isolation and vibration damping support to be positioned, and adding up the starting time of the isolation and vibration damping support to be positioned each time obtained within the analysis cycle, to obtain the starting time of the isolation and vibration damping support to be positioned;

[0031] Arrange the isolation and vibration reduction bearings to be positioned from small to large starting time to obtain the starting time sequence number of the isolation and vibration reduction bearings to be positioned;

[0032] The abnormal frequency and abnormal intensity corresponding to each seismic isolation and vibration reduction bearing to be located are obtained, and the abnormal frequency and the abnormal intensity are added and summed to obtain the abnormal performance value of each seismic isolation and vibration reduction bearing to be located.

[0033] As a further solution of the present invention: the calculation process of the abnormal frequency is:

[0034] Obtain the number of abnormal operation signals of the seismic isolation and vibration reduction bearing to be located within the analysis period, mark it as the number of abnormal signals, divide the number of abnormal signals by the analysis period, and obtain the abnormal frequency of the seismic isolation and vibration reduction bearing to be located;

[0035] The calculation process of abnormal intensity is:

[0036] During the analysis period, the total time of abnormal operation signals of each isolation and vibration reduction bearing to be located in the sub-area corresponding to the adjacent impact values ​​is obtained, and the mean value is calculated to obtain the mean value of abnormal time;

[0037] Then, the total time of the abnormal signal of the isolation and vibration reduction bearing to be positioned is divided by the mean of the abnormal time to obtain the abnormal intensity.

[0038] A subway cover seismic isolation and vibration reduction state monitoring system, the system comprising:

[0039] Monitoring module: obtains vibration and noise information of the seismic isolation and vibration reduction bearing, makes comparison and judgment, and generates vibration and noise signals;

[0040] The vibration and noise information includes the real-time amplitude and noise of the seismic isolation and vibration reduction bearing, and the vibration and noise signal includes the amplitude signal and the noise signal;

[0041] Analysis module: Based on the vibration noise signal, the vibration reduction performance of the seismic isolation and vibration reduction bearing is evaluated to obtain the seismic isolation and vibration reduction bearing signal;

[0042] The seismic isolation and vibration reduction bearing signal includes a seismic isolation and vibration reduction bearing normal operation signal or a seismic isolation and vibration reduction bearing abnormal operation signal;

[0043] Judgment module: Based on the subway cover, the area is divided, the operation signal of the seismic isolation and vibration reduction bearing in each area is obtained, and the seismic isolation status is judged;

[0044] Positioning module: Based on the small signal of independent influence of the seismic isolation and vibration reduction bearing and the abnormal performance information of the seismic isolation and vibration reduction bearing, the seismic isolation and vibration reduction bearing is positioned to determine the important seismic isolation and vibration reduction bearing objects to be monitored.

[0045] Beneficial effects of the present invention:

[0046] (1) The present invention obtains vibration and noise information of the seismic isolation and vibration reduction bearing, and compares and judges to generate a vibration and noise signal; based on the vibration and noise signal, the seismic isolation and vibration reduction bearing is judged for its vibration reduction performance to obtain a seismic isolation and vibration reduction bearing signal; based on the subway cover, the area is divided, the operation signal of the seismic isolation and vibration reduction bearing in each area is obtained, and the seismic isolation state is judged; the present invention monitors the operation process of the seismic isolation and vibration reduction bearing in the subway cover area in real time, and based on the signal results of the monitoring and analysis, through the phase influence difference, effectively judges the abnormal distribution area of ​​the seismic isolation and vibration reduction of the subway cover (the size and number of abnormal areas of the seismic isolation and vibration reduction bearing monitored), and the abnormal distribution nature (whether the abnormality of the seismic isolation and vibration reduction bearing monitored is regional or intermittent distribution), so based on the monitoring and evaluation data, the seismic isolation and vibration reduction bearing of the subway cover can be timely and effectively repaired;

[0047] (2) The present invention locates the seismic isolation and vibration reduction bearings based on the small independent impact signals of the seismic isolation and vibration reduction bearings and the abnormal performance information of the seismic isolation and vibration reduction bearings, and determines the seismic isolation and vibration reduction bearings that need to be monitored. The present invention determines the seismic isolation and vibration reduction bearings that are operating abnormally in the area through the time, abnormal frequency and abnormal intensity of the abnormal signals generated by the seismic isolation and vibration reduction bearings, and obtains the seismic isolation and vibration reduction bearings that need to be monitored. In the subsequent operation process, the operating data of the seismic isolation and vibration reduction bearings that are monitored can be used to timely monitor the abnormal conditions of the seismic isolation and vibration reduction status of the subway cover, so as to facilitate rapid maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] Figure 1 is a flowchart of Embodiment 1 of the present invention;

[0050] Figure 2 is a flowchart of Embodiment 2 of the present invention;

[0051] Figure 3 It is a system block diagram of embodiment 3 of the present invention. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Example 1

[0054] See also Figure 1 As shown, the present invention is a method for monitoring the seismic isolation and vibration reduction status of a subway cover, comprising the following steps:

[0055] Step 1: Obtain the vibration and noise information of the seismic isolation and vibration reduction bearing, make a comparison and judgment, and generate a vibration and noise signal;

[0056] The vibration and noise information includes the real-time amplitude and noise of the seismic isolation and vibration reduction bearing, and the vibration and noise signal includes the amplitude signal and the noise signal;

[0057] In some embodiments, in the subway cover, the real-time amplitude and noise of each seismic isolation and vibration reduction support are obtained, and a comparative analysis is performed to obtain an amplitude signal and a noise signal;

[0058] Specifically, the real-time amplitude of the seismic isolation and vibration reduction bearing is compared with the real-time amplitude threshold of the seismic isolation and vibration reduction bearing. If the real-time amplitude of the seismic isolation and vibration reduction bearing is greater than or equal to the real-time amplitude threshold of the seismic isolation and vibration reduction bearing, an abnormal amplitude signal is generated. If the real-time amplitude of the seismic isolation and vibration reduction bearing is less than the real-time amplitude threshold of the seismic isolation and vibration reduction bearing, a normal amplitude signal is generated.

[0059] The real-time noise of the seismic isolation and vibration reduction bearing is compared with the real-time noise threshold of the seismic isolation and vibration reduction bearing. If the real-time noise of the seismic isolation and vibration reduction bearing is greater than or equal to the real-time noise threshold of the seismic isolation and vibration reduction bearing, an abnormal amplitude signal is generated. If the real-time noise of the seismic isolation and vibration reduction bearing is less than the real-time noise threshold of the seismic isolation and vibration reduction bearing, a normal amplitude signal is generated.

[0060] Step 2: Based on the vibration noise signal, the seismic isolation and vibration reduction bearing is evaluated for its vibration reduction performance, and a seismic isolation and vibration reduction bearing signal is obtained;

[0061] The seismic isolation and vibration reduction bearing signal includes a seismic isolation and vibration reduction bearing normal operation signal or a seismic isolation and vibration reduction bearing abnormal operation signal;

[0062] In some embodiments, if the normal amplitude signal and the normal noise signal are obtained at the same time, it means that the seismic isolation and vibration damping support does not exceed the set standard range during operation, and a normal operation signal of the seismic isolation and vibration damping support is generated;

[0063] Otherwise, an abnormal operation signal of the seismic isolation and vibration reduction bearing is generated;

[0064] It should be explained that the otherwise situation includes: simultaneously acquiring an abnormal amplitude signal and an abnormal noise signal, simultaneously acquiring a normal amplitude signal and an abnormal noise signal, or simultaneously acquiring an abnormal amplitude signal and a normal noise signal;

[0065] Step 3: Based on the subway cover, the area is divided, and the operation signal of the seismic isolation and vibration reduction bearing in each area is obtained to judge the seismic isolation status;

[0066] In some embodiments, the seismic isolation and vibration reduction bearings of the subway cover are divided into a plurality of monitoring areas according to regions, and the operation signals of the seismic isolation and vibration reduction bearings in each monitoring area are obtained;

[0067] Based on the operation signal of the seismic isolation and vibration reduction bearing in the monitoring area, the adjacent influence value and the interval influence value are output, and the difference between the adjacent influence value and the interval influence value is made to obtain the phase-to-phase influence difference;

[0068] comparing the inter-phase influence difference value with the inter-phase influence difference threshold;

[0069] If the phase-to-phase influence difference is greater than or equal to the phase-to-phase influence difference threshold, a small independent influence signal of the isolation and vibration reduction bearing is generated;

[0070] If the phase-to-phase influence difference is less than the phase-to-phase influence difference threshold, a large independent influence signal of the isolation and vibration reduction bearing is generated;

[0071] It should be explained that a small signal of independent influence of the seismic isolation and vibration damping bearing indicates that the number of abnormal operation signals generated by adjacent seismic isolation and vibration damping bearings in the area accounts for a large proportion, while the number of abnormal operation signals generated by non-adjacent seismic isolation and vibration damping bearings accounts for a small proportion. On the contrary, a large signal of independent influence of the seismic isolation and vibration damping bearing indicates that the number of abnormal operation signals generated by adjacent seismic isolation and vibration damping bearings in the area accounts for a small proportion, while the number of abnormal operation signals generated by non-adjacent seismic isolation and vibration damping bearings accounts for a large proportion.

[0072] In more detail, the calculation process of the adjacent influence value is:

[0073] Obtain sub-areas in the monitoring area where abnormal operation signals of seismic isolation and vibration reduction bearings are generated between adjacent seismic isolation and vibration reduction bearings, count the number of sub-areas, and mark them as adjacent influence values;

[0074] The calculation process of the interval impact value is:

[0075] Obtain sub-areas in the monitoring area where there are non-adjacent isolation and vibration reduction bearings that all generate isolation and vibration reduction bearing operation abnormal signals, and count the number of sub-areas, marking them as interval impact values;

[0076] Among them, the adjacent impact value and the interval impact value can reflect the abnormal distribution of seismic isolation and vibration reduction bearings in the subway cover area, whether the regional anomalies account for a large proportion or the interval anomalies account for a large proportion;

[0077] About the explanation of terms: the abnormal operation signals of seismic isolation and vibration reduction bearings are generated between adjacent seismic isolation and vibration reduction bearings: two adjacent seismic isolation and vibration reduction bearings both generate abnormal operation signals of seismic isolation and vibration reduction bearings; on the contrary, the abnormal operation signals of seismic isolation and vibration reduction bearings are generated between non-adjacent seismic isolation and vibration reduction bearings: a second seismic isolation and vibration reduction bearing generating abnormal operation signals of seismic isolation and vibration reduction bearings does not appear at the adjacent position of a seismic isolation and vibration reduction bearing generating abnormal operation signals of seismic isolation and vibration reduction bearings;

[0078] The technical solution of the embodiment of the present invention: obtain vibration and noise information of the seismic isolation and vibration damping bearing, and compare and judge to generate a vibration and noise signal; based on the vibration and noise signal, judge the shock absorption performance of the seismic isolation and vibration damping bearing to obtain the seismic isolation and vibration damping bearing signal; based on the subway cover, divide the area, obtain the seismic isolation and vibration damping bearing operation signal in each area, and judge the seismic isolation state; the present invention monitors the operation process of the seismic isolation and vibration damping bearing in the subway cover area in real time, and based on the signal results of monitoring and analysis, through the phase influence difference, effectively judges the abnormal distribution area of ​​the seismic isolation and vibration damping of the subway cover (the size and number of abnormal areas of the seismic isolation and vibration damping bearing monitored), and the abnormal distribution nature (whether the abnormality of the seismic isolation and vibration damping bearing monitored is regional or intermittent distribution), so based on the monitoring and evaluation data, the seismic isolation and vibration damping bearing of the subway cover can be timely and effectively repaired.

[0079] Example 2

[0080] See also Figure 2 As shown, the present invention is a method for monitoring the seismic isolation and vibration reduction status of a subway cover, which also includes the following steps:

[0081] Step 4: Based on the small signal of independent influence of the seismic isolation and vibration reduction bearing and the abnormal performance information of the seismic isolation and vibration reduction bearing, the seismic isolation and vibration reduction bearing is located, and the seismic isolation and vibration reduction bearing objects that are important to monitor are determined;

[0082] In some embodiments, the seismic isolation and vibration reduction bearing generating the seismic isolation and vibration reduction bearing operation abnormality signal in the sub-region is obtained and marked as the seismic isolation and vibration reduction bearing to be located;

[0083] Setting an analysis cycle, obtaining the starting time of each isolation and vibration damping support to be positioned to generate an abnormal operation signal of the isolation and vibration damping support each time, obtaining the starting time of the isolation and vibration damping support to be positioned, and adding up the starting time of the isolation and vibration damping support to be positioned each time obtained within the analysis cycle, to obtain the starting time of the isolation and vibration damping support to be positioned;

[0084] Arrange the isolation and vibration reduction bearings to be positioned from small to large starting time to obtain the starting time sequence number of the isolation and vibration reduction bearings to be positioned;

[0085] Obtain the abnormal frequency and abnormal intensity corresponding to each seismic isolation and vibration reduction bearing to be located, add the abnormal frequency and the abnormal intensity to obtain the abnormal performance value of each seismic isolation and vibration reduction bearing to be located;

[0086] Arrange the abnormal performance values ​​of the seismic isolation and vibration reduction bearings to be located from large to small to obtain the abnormal performance sequence numbers of the seismic isolation and vibration reduction bearings to be located;

[0087] Add the starting time sequence number and abnormal performance sequence number of the same isolation and vibration reduction bearing to be positioned to obtain a comprehensive evaluation sequence number;

[0088] The isolation and vibration reduction bearing to be located corresponding to the minimum value of the comprehensive evaluation number is marked as a key monitoring object;

[0089] Specifically, the calculation process of the abnormal frequency is:

[0090] Obtain the number of abnormal operation signals of the seismic isolation and vibration reduction bearing to be located within the analysis period, mark it as the number of abnormal signals, divide the number of abnormal signals by the analysis period, and obtain the abnormal frequency of the seismic isolation and vibration reduction bearing to be located;

[0091] The calculation process of abnormal intensity is:

[0092] During the analysis period, the total time of abnormal operation signals of each isolation and vibration reduction bearing to be located in the sub-area corresponding to the adjacent impact values ​​is obtained, and the mean value is calculated to obtain the mean value of abnormal time;

[0093] Then, the total time of the abnormal signal of the seismic isolation and vibration reduction bearing to be positioned is divided by the mean value of the abnormal time to obtain the abnormal intensity;

[0094] The technical solution of the embodiment of the present invention: based on the small signal of independent influence of the isolation and vibration damping bearing, the isolation and vibration damping bearing is positioned according to the abnormal performance information of the isolation and vibration damping bearing, and the isolation and vibration damping bearing object that is important to monitor is determined; the present invention determines the isolation and vibration damping bearing with abnormal operation in the area through the time, abnormal frequency and abnormal intensity of the abnormal signal generated by the isolation and vibration damping bearing, and obtains the isolation and vibration damping bearing to be monitored in key areas. In the subsequent operation process, the operating data of the isolation and vibration damping bearing that is monitored in key areas can be used to monitor the abnormal conditions of the isolation and vibration damping state of the subway cover in time, so as to facilitate rapid maintenance.

[0095] Example 3

[0096] See also Figure 3 As shown, the present invention is a subway cover isolation and vibration reduction state monitoring system, comprising:

[0097] Monitoring module: obtains vibration and noise information of the seismic isolation and vibration reduction bearing, makes comparison and judgment, and generates vibration and noise signals;

[0098] The vibration and noise information includes the real-time amplitude and noise of the seismic isolation and vibration reduction bearing, and the vibration and noise signal includes the amplitude signal and the noise signal;

[0099] Specifically, the real-time amplitude of the seismic isolation and vibration reduction bearing is compared with the real-time amplitude threshold of the seismic isolation and vibration reduction bearing. If the real-time amplitude of the seismic isolation and vibration reduction bearing is greater than or equal to the real-time amplitude threshold of the seismic isolation and vibration reduction bearing, an abnormal amplitude signal is generated. If the real-time amplitude of the seismic isolation and vibration reduction bearing is less than the real-time amplitude threshold of the seismic isolation and vibration reduction bearing, a normal amplitude signal is generated.

[0100] The real-time noise of the seismic isolation and vibration reduction bearing is compared with the real-time noise threshold of the seismic isolation and vibration reduction bearing. If the real-time noise of the seismic isolation and vibration reduction bearing is greater than or equal to the real-time noise threshold of the seismic isolation and vibration reduction bearing, an abnormal amplitude signal is generated. If the real-time noise of the seismic isolation and vibration reduction bearing is less than the real-time noise threshold of the seismic isolation and vibration reduction bearing, a normal amplitude signal is generated.

[0101] Analysis module: Based on the vibration noise signal, the vibration reduction performance of the seismic isolation and vibration reduction bearing is evaluated to obtain the seismic isolation and vibration reduction bearing signal;

[0102] The seismic isolation and vibration reduction bearing signal includes a seismic isolation and vibration reduction bearing normal operation signal or a seismic isolation and vibration reduction bearing abnormal operation signal;

[0103] Specifically, if the normal amplitude signal and the normal noise signal are obtained at the same time, it means that the seismic isolation and vibration reduction bearing does not exceed the set standard range during operation, and a normal operation signal of the seismic isolation and vibration reduction bearing is generated;

[0104] Otherwise, an abnormal operation signal of the seismic isolation and vibration reduction bearing is generated;

[0105] Judgment module: Based on the subway cover, the area is divided, the operation signal of the seismic isolation and vibration reduction bearing in each area is obtained, and the seismic isolation status is judged;

[0106] Specifically, the seismic isolation and vibration reduction bearings of the subway cover are divided into multiple monitoring areas according to the region, and the operation signal of the seismic isolation and vibration reduction bearings in each monitoring area is obtained;

[0107] Based on the operation signal of the seismic isolation and vibration reduction bearing in the monitoring area, the adjacent influence value and the interval influence value are output, and the difference between the adjacent influence value and the interval influence value is made to obtain the phase-to-phase influence difference;

[0108] comparing the inter-phase influence difference value with the inter-phase influence difference threshold;

[0109] If the phase-to-phase influence difference is greater than or equal to the phase-to-phase influence difference threshold, a small independent influence signal of the isolation and vibration reduction bearing is generated;

[0110] If the phase-to-phase influence difference is less than the phase-to-phase influence difference threshold, a large independent influence signal of the isolation and vibration reduction bearing is generated;

[0111] The calculation process of the adjacent influence value is:

[0112] Obtain sub-areas in the monitoring area where abnormal operation signals of seismic isolation and vibration reduction bearings are generated between adjacent seismic isolation and vibration reduction bearings, count the number of sub-areas, and mark them as adjacent influence values;

[0113] The calculation process of the interval impact value is:

[0114] Obtain sub-areas in the monitoring area where there are non-adjacent isolation and vibration reduction bearings that all generate isolation and vibration reduction bearing operation abnormal signals, and count the number of sub-areas, marking them as interval impact values;

[0115] Among them, the adjacent impact value and the interval impact value can reflect the abnormal distribution of seismic isolation and vibration reduction bearings in the subway cover area, whether the regional anomalies account for a large proportion or the interval anomalies account for a large proportion;

[0116] Positioning module: Based on the small independent impact signal of the seismic isolation and vibration reduction bearing and the abnormal performance information of the seismic isolation and vibration reduction bearing, the seismic isolation and vibration reduction bearing is positioned to determine the important seismic isolation and vibration reduction bearing objects to be monitored;

[0117] Specifically, the seismic isolation and vibration reduction bearings generating the seismic isolation and vibration reduction bearing operation abnormality signals in the sub-region are obtained and marked as the seismic isolation and vibration reduction bearings to be located;

[0118] Setting an analysis cycle, obtaining the starting time of each isolation and vibration damping support to be positioned to generate an abnormal operation signal of the isolation and vibration damping support each time, obtaining the starting time of the isolation and vibration damping support to be positioned, and adding up the starting time of the isolation and vibration damping support to be positioned each time obtained within the analysis cycle, to obtain the starting time of the isolation and vibration damping support to be positioned;

[0119] Arrange the isolation and vibration reduction bearings to be positioned from small to large starting time to obtain the starting time sequence number of the isolation and vibration reduction bearings to be positioned;

[0120] Obtain the abnormal frequency and abnormal intensity corresponding to each seismic isolation and vibration reduction bearing to be located, add the abnormal frequency and the abnormal intensity to obtain the abnormal performance value of each seismic isolation and vibration reduction bearing to be located;

[0121] Arrange the abnormal performance values ​​of the seismic isolation and vibration reduction bearings to be located from large to small to obtain the abnormal performance sequence numbers of the seismic isolation and vibration reduction bearings to be located;

[0122] Add the starting time sequence number and abnormal performance sequence number of the same seismic isolation and vibration reduction bearing to be positioned to obtain a comprehensive evaluation sequence number;

[0123] The isolation and vibration reduction bearing to be located corresponding to the minimum value of the comprehensive evaluation number is marked as a key monitoring object;

[0124] Specifically, the calculation process of the abnormal frequency is:

[0125] Obtain the number of abnormal operation signals of the seismic isolation and vibration reduction bearing to be located within the analysis period, mark it as the number of abnormal signals, divide the number of abnormal signals by the analysis period, and obtain the abnormal frequency of the seismic isolation and vibration reduction bearing to be located;

[0126] The calculation process of abnormal intensity is:

[0127] During the analysis period, the total time of abnormal operation signals of each isolation and vibration reduction bearing to be located in the sub-area corresponding to the adjacent impact values ​​is obtained, and the mean value is calculated to obtain the mean value of abnormal time;

[0128] Then, the total time of the abnormal signal of the isolation and vibration reduction bearing to be positioned is divided by the mean of the abnormal time to obtain the abnormal intensity.

[0129] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for monitoring the seismic isolation and vibration reduction status of a subway cover, characterized in that: The following steps are involved: Step 1: Obtain the vibration and noise information of the seismic isolation and vibration reduction bearing, make a comparison and judgment, and generate a vibration and noise signal; The vibration and noise information includes the real-time amplitude and noise of the seismic isolation and vibration reduction bearing, and the vibration and noise signal includes the amplitude signal and the noise signal; Step 2: Based on the vibration noise signal, the vibration reduction performance of the seismic isolation and vibration reduction bearing is evaluated to obtain the seismic isolation and vibration reduction bearing signal; The seismic isolation and vibration reduction bearing signal includes a seismic isolation and vibration reduction bearing normal operation signal or a seismic isolation and vibration reduction bearing abnormal operation signal; Step 3: Based on the subway cover, the area is divided, and the operation signal of the seismic isolation and vibration reduction bearing in each area is obtained to judge the seismic isolation status; In step 3, the seismic isolation and vibration reduction bearings of the subway cover are divided into multiple monitoring areas according to the region, and the seismic isolation and vibration reduction bearing operation signals in each monitoring area are obtained; Based on the operation signal of the seismic isolation and vibration reduction bearing in the monitoring area, the adjacent influence value and the interval influence value are output, and the difference between the adjacent influence value and the interval influence value is made to obtain the phase-to-phase influence difference; If the phase-to-phase influence difference is greater than or equal to the phase-to-phase influence difference threshold, a small independent influence signal of the isolation and vibration reduction bearing is generated; The calculation process of the adjacent influence value is: Obtain sub-areas in the monitoring area where abnormal operation signals of seismic isolation and vibration reduction bearings are generated between adjacent seismic isolation and vibration reduction bearings, count the number of sub-areas, and mark them as adjacent impact values; The calculation process of the interval impact value is: Obtain sub-areas in the monitoring area where there are non-adjacent isolation and vibration reduction bearings that all generate isolation and vibration reduction bearing operation abnormal signals, and count the number of sub-areas, marking them as interval impact values; Step 4: Based on the small independent impact signal of the seismic isolation and vibration reduction bearing, and according to the abnormal performance information of the seismic isolation and vibration reduction bearing, the seismic isolation and vibration reduction bearing is located, and the seismic isolation and vibration reduction bearing objects that are important to monitor are determined; In step 4, the seismic isolation and vibration reduction bearings generating the seismic isolation and vibration reduction bearing operation abnormality signal in the sub-region are obtained and marked as the seismic isolation and vibration reduction bearings to be located; Setting an analysis period, obtaining the starting time of each isolation and vibration reduction support to be located to generate an abnormal operation signal of the isolation and vibration reduction support each time, obtaining the starting time of the isolation and vibration reduction support to be located, adding up the starting time of the isolation and vibration reduction support to be located each time obtained within the analysis period, and obtaining the starting time of the isolation and vibration reduction support to be located; Arrange the isolation and vibration reduction bearings to be positioned from small to large starting time to obtain the starting time sequence number of the isolation and vibration reduction bearings to be positioned; Obtain the abnormal frequency and abnormal intensity corresponding to each seismic isolation and vibration reduction bearing to be located, add the abnormal frequency and the abnormal intensity to obtain the abnormal performance value of each seismic isolation and vibration reduction bearing to be located; Arrange the abnormal performance values ​​of the seismic isolation and vibration reduction bearings to be located from large to small to obtain the abnormal performance sequence numbers of the seismic isolation and vibration reduction bearings to be located; Add the starting time sequence number and abnormal performance sequence number of the same seismic isolation and vibration reduction bearing to be positioned to obtain a comprehensive evaluation sequence number; The isolation and vibration reduction bearing to be located corresponding to the minimum value of the comprehensive evaluation number shall be marked as the key monitoring object.

2. A method for monitoring the seismic isolation and vibration reduction status of a subway cover according to claim 1, characterized in that: In step 1, if the real-time amplitude of the seismic isolation and vibration reduction bearing is greater than or equal to the real-time amplitude threshold of the seismic isolation and vibration reduction bearing, an amplitude abnormality signal is generated; If the real-time noise of the seismic isolation and vibration reduction bearing is greater than or equal to the real-time noise threshold of the seismic isolation and vibration reduction bearing, an amplitude abnormality signal is generated.

3. The method for monitoring the seismic isolation and vibration reduction status of a subway cover according to claim 1 is characterized in that: In step 2, if the amplitude normal signal and the noise normal signal are obtained at the same time, a seismic isolation and vibration reduction bearing normal operation signal is generated; Otherwise, an abnormal operation signal of the seismic isolation and vibration reduction bearing is generated.

4. The method for monitoring the seismic isolation and vibration reduction status of a subway cover according to claim 1 is characterized in that: The calculation process of abnormal frequency is: Obtain the number of abnormal operation signals of the seismic isolation and vibration reduction bearing to be located within the analysis period, mark it as the number of abnormal signals, divide the number of abnormal signals by the analysis period, and obtain the abnormal frequency of the seismic isolation and vibration reduction bearing to be located; The calculation process of abnormal intensity is: During the analysis period, the total time of abnormal operation signals of each isolation and vibration reduction bearing to be located in the sub-area corresponding to the adjacent impact values ​​is obtained, and the mean value is calculated to obtain the mean value of abnormal time; Then, the total time of the abnormal signal of the isolation and vibration reduction bearing to be positioned is divided by the mean of the abnormal time to obtain the abnormal intensity.

5. A subway cover isolation and vibration reduction status monitoring system, characterized in that: The system is used to execute the method described in any one of claims 1 to 4 above, and the system comprises: Monitoring module: obtains vibration and noise information of the seismic isolation and vibration reduction bearing, makes comparison and judgment, and generates vibration and noise signals; The vibration and noise information includes the real-time amplitude and noise of the seismic isolation and vibration reduction bearing, and the vibration and noise signal includes the amplitude signal and the noise signal; Analysis module: Based on the vibration noise signal, the vibration reduction performance of the seismic isolation and vibration reduction bearing is evaluated to obtain the seismic isolation and vibration reduction bearing signal; The seismic isolation and vibration reduction bearing signal includes a seismic isolation and vibration reduction bearing normal operation signal or a seismic isolation and vibration reduction bearing abnormal operation signal; Judgment module: Based on the subway cover, the area is divided, the operation signal of the seismic isolation and vibration reduction bearing in each area is obtained, and the seismic isolation status is judged; In the judgment module, the seismic isolation and vibration reduction bearings of the subway cover are divided into multiple monitoring areas according to the region, and the operation signal of the seismic isolation and vibration reduction bearings in each monitoring area is obtained; Based on the operation signal of the seismic isolation and vibration reduction bearing in the monitoring area, the adjacent influence value and the interval influence value are output, and the difference between the adjacent influence value and the interval influence value is made to obtain the phase-to-phase influence difference; If the phase-to-phase influence difference is greater than or equal to the phase-to-phase influence difference threshold, a small independent influence signal of the isolation and vibration reduction bearing is generated; The calculation process of the adjacent influence value is: Obtain sub-areas in the monitoring area where abnormal operation signals of seismic isolation and vibration reduction bearings are generated between adjacent seismic isolation and vibration reduction bearings, count the number of sub-areas, and mark them as adjacent impact values; The calculation process of the interval impact value is: Obtain sub-areas in the monitoring area where there are non-adjacent isolation and vibration reduction bearings that all generate isolation and vibration reduction bearing operation abnormal signals, and count the number of sub-areas, marking them as interval impact values; Positioning module: Based on the small independent impact signal of the seismic isolation and vibration reduction bearing and the abnormal performance information of the seismic isolation and vibration reduction bearing, the seismic isolation and vibration reduction bearing is positioned to determine the important seismic isolation and vibration reduction bearing objects to be monitored; In the positioning module, the seismic isolation and vibration reduction bearings generating the seismic isolation and vibration reduction bearing operation abnormality signals in the sub-area are obtained and marked as the seismic isolation and vibration reduction bearings to be positioned; Setting an analysis period, obtaining the starting time of each isolation and vibration reduction support to be located to generate an abnormal operation signal of the isolation and vibration reduction support each time, obtaining the starting time of the isolation and vibration reduction support to be located, adding up the starting time of the isolation and vibration reduction support to be located each time obtained within the analysis period, and obtaining the starting time of the isolation and vibration reduction support to be located; Arrange the isolation and vibration reduction bearings to be positioned from small to large starting time to obtain the starting time sequence number of the isolation and vibration reduction bearings to be positioned; Obtain the abnormal frequency and abnormal intensity corresponding to each seismic isolation and vibration reduction bearing to be located, add the abnormal frequency and the abnormal intensity to obtain the abnormal performance value of each seismic isolation and vibration reduction bearing to be located; Arrange the abnormal performance values ​​of the seismic isolation and vibration reduction bearings to be located from large to small to obtain the abnormal performance sequence numbers of the seismic isolation and vibration reduction bearings to be located; Add the starting time sequence number and abnormal performance sequence number of the same seismic isolation and vibration reduction bearing to be positioned to obtain a comprehensive evaluation sequence number; The isolation and vibration reduction bearing to be located corresponding to the minimum value of the comprehensive evaluation number shall be marked as the key monitoring object.

Images