CN113569362B - System and method for managing whole life cycle of shield segment - Google Patents
System and method for managing whole life cycle of shield segment Download PDFInfo
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- CN113569362B CN113569362B CN202111103963.0A CN202111103963A CN113569362B CN 113569362 B CN113569362 B CN 113569362B CN 202111103963 A CN202111103963 A CN 202111103963A CN 113569362 B CN113569362 B CN 113569362B
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- G06F2119/02—Reliability analysis or reliability optimisation; Failure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]
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Abstract
The invention discloses a whole life cycle management system of shield segments, which mainly comprises: the monitoring system comprises a monitoring object, a mobile device, a first working part, a second working part, a control part, a data input part, a data retrieval part, a segment monitoring part and a response part. The first working part is provided with a plurality of first monitoring units and a first analysis unit, the first monitoring units acquire vibration data of any track, and the first analysis unit determines a first service life parameter of an area where the track is located according to the vibration data. The second working part is provided with a plurality of second monitoring units and second analysis units, the second monitoring units acquire displacement data of any monitoring section, and the first analysis units determine a second life parameter of the area where the monitoring section is located according to the displacement data. The first working part and the second working part can obtain vibration data and settlement data in a preset time period, and the influence of vibration on the settlement data is reduced. The invention also discloses a method for managing the whole life cycle of the shield segment.
Description
Technical Field
The invention relates to a technology for monitoring a component by adopting a data analysis method, in particular to a system and a method for managing the whole life cycle of a shield segment.
Background
The segment may be damaged locally in the using process, and the normal use is influenced. Research on fatigue influence factors of shield tunnel segments under dynamic load of high-speed rail trains in Dengtang and evaluation method in the university of southwest traffic university student's academic paper 2015, the tunnel segments are supervised by fixed sensing devices, but the scheme is suitable for experimental analysis and cannot solve the problem of interference of a plurality of state parameters caused by train vibration in the actual operation process. The shield segment quality inspection system of CN107818372A comprises a data acquisition device, a data management device and a data analysis device. The system collects corresponding defect information according to segment information input by a user, and analyzes and summarizes the defect information. The tunnel full-life-cycle management system of CN103544556B includes an operation subsystem, and the operation subsystem obtains the space-time data information and analyzes and determines the condition of the operation tunnel defect through the state parameter analysis technique. In these prior art, a plurality of section of jurisdiction states are analyzed in the whole journey simultaneously, and the data bulk is great. There is a need to provide an accurate supervision for target segments.
Disclosure of Invention
Aiming at the problems, the invention provides a system and a method for managing the whole life cycle of a shield segment, which accurately manage a target segment and improve the safety of a tunnel by monitoring a plurality of parameters of the segment region in different operation states.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a shield constructs life cycle management system of section of jurisdiction which characterized in that includes: a supervision object, a mobile device, a first working part, a second working part, a control part, a data input part, a data retrieval part, a segment supervision part and a response part, wherein,
the supervision object is provided with a plurality of groups of tracks and supervision sections, at least part of the tracks penetrate through the supervision sections, and a plurality of pipe pieces are arranged on the inner side walls of the supervision sections;
the moving device moves on the track;
the first working part is provided with a plurality of first monitoring units and first analysis units, the first monitoring units acquire vibration data of any track, and the first analysis units determine a first service life parameter of an area where the track is located according to the vibration data;
the second working part is provided with a plurality of second monitoring units and second analysis units, the second monitoring units acquire displacement data of any monitoring section, and the second analysis units determine a second service life parameter of the area where the monitoring section is located according to the displacement data;
the control part activates a first monitoring unit within the reference distance of the mobile device and a second monitoring unit outside the reference distance of the mobile device;
the data input part receives the central coordinate z of the target segment H;
the data retrieval part retrieves a track interval [ x1, x2 ] and a supervision section interval [ y1, y2 ] to which the target segment H belongs according to the central coordinate z, and extracts a reference track D and a reference supervision section S corresponding to the track interval and the supervision section interval, wherein z belongs to [ x1, x2 ] and z belongs to [ y1, y2 ];
the segment supervision part determines the expected life of the target segment H according to the first life parameter of the reference track D and the second life parameter of the reference supervision section S;
the response part extracts a plurality of target segments H with the expected life being less than the required life, and outputs an image supervision request for the target segments H.
In the present invention, the first working unit further includes a first storage unit that generates a fatigue life model from the plurality of time point vibration data, and the first analysis unit determines the first life parameter from the fatigue life model.
In the present invention, the second working unit further includes second storage means having a sedimentation life model generated from a plurality of historical sedimentation data, and the second analysis means calculates a second life parameter corresponding to the sedimentation data from the sedimentation life model.
In the invention, the first monitoring unit is a piezoelectric accelerometer, and the piezoelectric accelerometer is arranged at the bottom of the track.
In the invention, the second monitoring unit consists of an even number of fiber grating sensors which are symmetrically arranged on the inner wall of the supervision section.
In the invention, the life cycle management system also comprises an image analysis part, the response part is connected to the image analysis part, the image analysis part is provided with a high-speed camera unit, the high-speed camera unit is arranged on the mobile device, and the control part activates the high-speed camera unit when the mobile device is positioned within the reference distance of the target segment.
A method for managing the whole life cycle of a shield segment is characterized by comprising the following steps:
step1, selecting a supervision object, wherein the supervision object is provided with a plurality of groups of tracks and supervision sections, at least part of the tracks penetrate through the supervision sections, and a plurality of duct pieces are arranged on the inner side walls of the supervision sections;
step2, periodically driving the moving device to move on the track;
step3, acquiring vibration data of the track within the reference distance of the mobile device, and determining a first life parameter of the area where the track is located according to the vibration data;
step4, acquiring displacement data of a monitoring section outside the reference distance of the mobile device, and determining a second life parameter of the area where the monitoring section is located according to the displacement data;
step5, inputting the central coordinate z of the target segment H;
step6, searching a track interval [ x1, x2 ] and a supervision section interval [ y1, y2 ] to which the target segment H belongs according to the central coordinate z, and extracting a reference track D and a reference supervision section S corresponding to the track interval and the supervision section interval, wherein z belongs to [ x1, x2 ] and z belongs to [ y1, y2 ];
step7, determining the expected life of the target segment H according to the first life parameter of the reference track D and the second life parameter of the reference monitoring segment S;
step8, extracting a plurality of target segments H with the expected life less than the required life, and outputting the image supervision request of the target segments H.
The system and the method for managing the whole life cycle of the shield segment have the following beneficial effects: the first working part and the second working part can obtain vibration data and settlement data in a preset time period, and the influence of vibration on the settlement data is reduced. The environmental state in the area of the central coordinate of the target segment can accurately reflect the service life parameter of the fatigue state of the segment, and the safety of the tunnel is improved.
Drawings
FIG. 1 is a block diagram of a full life cycle management system for such a shield segment of the present invention;
FIG. 2 is a schematic cross-sectional view of a supervisory object;
FIG. 3 is a schematic view in another direction of FIG. 2;
FIG. 4 is an actual map of vibration data of the present invention;
FIG. 5 is an actual map of displacement data of the present invention;
FIG. 6 is a block diagram of another preferred embodiment of FIG. 1;
fig. 7 is a flowchart of the method for managing the life cycle of the shield segment according to the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The system for managing the full life cycle of the shield segment, disclosed by the invention, comprises the following components: the monitoring system comprises a monitoring object, a mobile device, a first working part, a second working part, a control part, a data input part, a data retrieval part, a segment monitoring part and a response part. The supervision object has a plurality of sets of tracks 1 and supervision sections 2, at least part of the tracks 1 pass through the supervision sections 2, and a plurality of pipe pieces 3 are arranged on the inner side walls of the supervision sections 2. In this embodiment, the tube sheet is composed of five sub-tube sheets, wherein one a-type sub-tube sheet is 21.5 °, and two B-type sub-tube sheets are 68 ° and three C-type sub-tube sheets are 67.5 °. The seams of adjacent segments are arranged crosswise, and every six groups of segments form a cycle. The mobile device 6 moves on the track 1, and to obtain accurate vibration data, the control section activates the first monitoring unit 4 within a reference distance of the mobile device 6. At the same time, in order to reduce the influence of vibrations on the displacement data, the control unit activates the second monitoring unit 5 which is outside the reference distance of the moving device 6. The control unit has, for example, a positioning module, and can acquire the position coordinates of the mobile device 6 in real time and activate different detection units according to the position coordinates.
The operator provides target data, including but not limited to the target segment number L and center coordinate z, via the data input. The data retrieval unit retrieves a track segment [ x1, x2 ] and a supervision segment [ y1, y2 ] to which the target segment H belongs, based on the center coordinate z. z ∈ [ x1, x2 ] and z ∈ [ y1, y2 ]. And extracting a reference track D and a reference supervision section S corresponding to the track section and the supervision section. The segment supervision section determines the expected life of the target segment H according to the first life parameter of the reference track D and the second life parameter of the reference supervision section S. The life evaluation method is not limited in the present invention, and for example, the life expectancy L is N- [ (N-L) by member damage sensitivity evaluationD）μ1＋（N－LS）μ2Refer to the description. And N is the design life and is determined by engineering design files. L isDAnd LSThe service life parameters are respectively a first service life parameter and a second service life parameter, and are influenced by the actual use conditions of the engineering. Mu.s1And mu2Sensitivity of the service life to vibration and sensitivity of the service life to deformation, respectively. Also, using accelerated damage assessment, life expectancy L = (L)D/ N）×（LSN, or with minimum evaluation, life expectancy L = min (L)D，LS）。
The responding section extracts a plurality of target segments H whose expected life is less than a reference life, which may be a preset life to the next overhaul period. In this embodiment, the image analysis unit is used to complete the image supervision request for the target segment H. The response part is connected to an image analysis part having a high-speed camera unit mounted on a mobile device, and the control part activates the high-speed camera unit when the mobile device is within a reference distance of the target segment H.
The first working part determines the stress data of the pipe piece in the area where the track is located by measuring the vibration of the track. The first working unit includes a plurality of first monitoring units, a first storage unit, and a first analysis unit. The first monitoring unit is fixed at the bottom of the track and used for acquiring vibration data of the corresponding track. The first storage unit comprises a fatigue life model, the first analysis unit determines a first life parameter of the region where the track is located according to the fatigue life model of the vibration data, and the first life parameter is the life of the segment in the region under the current vibration trend. In the tunnel, the vibration acceleration is embodied as the main vibration state of the segment in the area, and the segment fatigue stress curve is simulated according to the variation numerical value of the vibration state. The first monitoring unit of the present embodiment is a TST121A-100 type piezoelectric accelerometer, the sensitivity is about 100mV/g, and the resolution frequency is 0.5 to 5000 Hz. The measured data of the piezoelectric acceleration in a certain tunnel is shown in fig. 4. At the beginning and end points, the mobile device is positioned near the reference track, and the amplitude is small; at the intermediate point, the mobile device is located above the reference track, with a larger amplitude. The embodiment does not limit the specific method for determining the first life parameter by the first analyzing unit. In the present embodiment, the first storage unit generates a fatigue life model using, for example, an S-N curve from the trend of change in the vibration data at a plurality of points in time. Life data corresponding to the extreme states of the fatigue life model, a first life parameter. The amount of strain is estimated from the ultimate stress level at vibration and the first life parameter is predicted from its relationship to the maximum allowable strain.
The second working part determines the sedimentation data of the pipe piece in the area by monitoring the displacement condition of the pipe piece. The second working unit includes a plurality of second monitoring units, a second storage unit, and a second analysis unit. The second monitoring unit consists of an even number of fiber grating sensors which are symmetrically arranged on the inner wall of the supervision section. The average measured value of the fiber grating sensor is displacement data of the corresponding monitoring section. Accordingly, each second monitoring unit can acquire the settlement value of the segment in the corresponding supervision section. The Fiber Bragg Grating (FBG) of the invention is described in reference to "xuwanpeng" feasibility exploration of a new method for monitoring tunnel displacement, journal of railroad engineering ", and the like. The second storage unit has a subsidence life model generated from a plurality of historical displacement data. And the second analysis unit determines a second life parameter of the region in which the supervision section is located according to the displacement data. The tunnel settlement curve is known to approach a logarithmic function, the settlement is large at the initial building of the tunnel, and the settlement is gradually reduced after the tunnel is used for a long time. Fig. 5 is measured data of two groups of fiber bragg grating sensors on the left and right of a certain tunnel project. The second analysis unit may predict the time for the sedimentation value to reach a maximum allowed sedimentation (e.g. 11 mm) from the sedimentation lifetime model, thereby obtaining a second lifetime parameter corresponding to the sedimentation data.
Referring to fig. 6, as a further improvement of the present application, the life cycle management system of the present invention further includes an image capturing unit, an image processing unit, an image analyzing unit, a database, and a data comparing unit. And after receiving the trigger request, the camera shooting unit opens a CCD camera arranged on the outer surface of the subway train, and the shot image is sent to the image processing unit. And transmitting a plurality of groups of instantaneous images of the duct pieces shot by the camera shooting unit into the image processing unit, and graying and cutting the images. The image processing unit receives the instantaneous image taken by the CCD camera, since the coding system will also code the color information of the image therein. The graying process eliminates the influence of the three primary colors of RGB in the original image due to illumination and the like.
And cutting the image according to the static reference of the duct piece. For example, identification points are arranged at a plurality of positions of each group of pipe segments in the tunnel, and the spliced image is cut into a fused image which is the same as the original image of the target pipe segment group in the database by taking the identification points as the reference. And transmitting the fusion image subjected to graying and cutting into an image analysis unit, and encoding the fusion image by using an encoding system of a convolutional neural network. And outputting a real-time coding matrix C after the fusion image is coded and processed by the neural network. The convolutional neural network is composed of, for example, three convolutional layers.
Transmitting the obtained real-time coding matrix C into a data comparison unit, and comparing the real-time coding matrix C with a basic coding matrix C stored in a databasepAnd (6) carrying out comparison. And if the absolute error E obtained by calculation is smaller than an error threshold value set in the system, judging that the fused image is normal, if the absolute error E is larger than the error threshold value (for example, 30), judging that the fused image is abnormal, and outputting a warning signal if the deformation of the segment exceeds a stable range. In the preferred embodiment, the approximate position of the pathological segment can be preliminarily determined through the detection of the first working part and the second working part, and more accurate pathological data can be obtained through modules such as an image pick-up unit and a data comparison unit. Because the camera unit is only in a predetermined areaThe image processing workload can be reduced by shooting the image.
The method for managing the full life cycle of the shield segment, disclosed by the invention, as shown in fig. 7 comprises the following steps:
step1, selecting a supervisory object having a plurality of sets of tracks and a supervisory section through which at least part of the track 1 passes, the supervisory section having a plurality of segments disposed on an inner sidewall thereof.
step2, periodically driving the moving device to move on the track. The moving means of the present embodiment is, for example, a detection apparatus of a subway car or CN 204007533U. The mobile device is periodically positioned in different tracks and supervision sections in the moving process, and the tracks and supervision sections close to the mobile device are in a vibration state.
step3, obtaining vibration data of the track within the reference distance of the mobile device, and determining a first life parameter of the area where the track is located according to the vibration data. The vibration data is obtained, for example, using a first monitoring unit. The tracks are adapted to have different vibration data at different stages, and in order to obtain accurate vibration data, the tracks are measured within a reference distance of the mobile device, which is for example 50 m.
step4, obtaining the displacement data of the supervision section outside the reference distance of the mobile device, and determining the second life parameter of the area where the supervision section is located according to the displacement data. The displacement data is obtained, for example, using a second monitoring unit. Meanwhile, in order to reduce the influence of vibration on the displacement data, a second life parameter after the mobile device is far away is obtained.
step5, the center coordinate z of the target segment H is input. The central coordinates are, for example, coordinate values of the geometric center point of the target segment H.
step6, according to the central coordinate z, searching the track section [ x1, x2 ] and the supervision section [ y1, y2 ] to which the target segment H belongs, and extracting the reference track D and the reference supervision section S corresponding to the track section and the supervision section, wherein z belongs to [ x1, x2 ] and z belongs to [ y1, y2 ]. For example, the center coordinate z of the target segment is 86.5m, the orbit coordinate interval of the target segment is [ 80, 88 ] and the supervision segment interval is [ 84, 90 ].
step7, determining the expected life of the target segment H according to the first life parameter of the reference track D and the second life parameter of the reference monitoring segment S. The environmental state in the area of the central coordinate of the target segment can accurately reflect the service life parameter of the fatigue state of the segment, and the safety of the tunnel is improved.
step8, extracting a plurality of target segments H with the expected life less than the required life, and outputting the image supervision request of the target segments H. For example, if the expected life of 48 years is less than the reference life of 50 years, indicating that the target segment does not reach the next overhaul period, an image supervision request for the target segment H should be output.
step9, acquiring the instantaneous image of the target segment H, and outputting a warning signal if the deformation of the instantaneous image is larger than the absolute error.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a shield constructs life cycle management system of section of jurisdiction which characterized in that includes: a supervision object, a mobile device, a first working part, a second working part, a control part, a data input part, a data retrieval part, a segment supervision part and a response part, wherein,
the supervision object is provided with a plurality of groups of tracks and supervision sections, at least part of the tracks penetrate through the supervision sections, and a plurality of pipe pieces are arranged on the inner side walls of the supervision sections;
the moving device moves on the track;
the first working part is provided with a plurality of first monitoring units and first analysis units, the first monitoring units acquire vibration data of any track, and the first analysis units determine a first service life parameter of an area where the track is located according to the vibration data;
the second working part is provided with a plurality of second monitoring units and second analysis units, the second monitoring units acquire displacement data of any monitoring section, and the second analysis units determine a second service life parameter of the area where the monitoring section is located according to the displacement data;
the control part activates a first monitoring unit within the reference distance of the mobile device and a second monitoring unit outside the reference distance of the mobile device;
the data input part receives the central coordinate z of the target segment H;
the data retrieval part retrieves a track interval [ x1, x2 ] and a supervision section interval [ y1, y2 ] to which the target segment H belongs according to the central coordinate z, and extracts a reference track D and a reference supervision section S corresponding to the track interval and the supervision section interval, wherein z belongs to [ x1, x2 ] and z belongs to [ y1, y2 ];
the segment supervision part determines the expected life of the target segment H according to the first life parameter of the reference track D and the second life parameter of the reference supervision section S;
the response part extracts a plurality of target segments H with the expected life being less than the required life, and outputs the image supervision request of the target segments H.
2. The system for managing the full life cycle of a shield segment according to claim 1, wherein the first working unit further comprises a first storage unit, the first storage unit generates a fatigue life model according to the multiple time point vibration data, and the first analysis unit determines the first life parameter according to the fatigue life model.
3. The system for managing the full life cycle of a shield segment according to claim 1, wherein the second working section further comprises a second storage unit having a sedimentation life model generated from a plurality of historical sedimentation data, and the second analysis unit calculates a second life parameter corresponding to the sedimentation data from the sedimentation life model.
4. The system of claim 2, wherein the first monitoring unit is a piezoelectric accelerometer, the piezoelectric accelerometer being mounted at the bottom of the track.
5. The system for managing the full life cycle of the shield segment of claim 3, wherein the second monitoring unit is composed of an even number of fiber grating sensors, and the fiber grating sensors are symmetrically arranged on the inner wall of the supervision segment.
6. The system of claim 1, further comprising an image analysis section, the response section being connected to the image analysis section, the image analysis section having a high speed camera unit, the high speed camera unit being mounted on the mobile device, the control section activating the high speed camera unit when the mobile device is within a target segment reference distance.
7. The method for managing the full life cycle of the system for managing the full life cycle of the shield segment according to claim 1, comprising the following steps:
step1, selecting a supervision object, wherein the supervision object is provided with a plurality of groups of tracks and supervision sections, at least part of the tracks penetrate through the supervision sections, and a plurality of duct pieces are arranged on the inner side walls of the supervision sections;
step2, periodically driving the moving device to move on the track;
step3, acquiring vibration data of the track within the reference distance of the mobile device, and determining a first life parameter of the area where the track is located according to the vibration data;
step4, acquiring displacement data of a monitoring section outside the reference distance of the mobile device, and determining a second life parameter of the area where the monitoring section is located according to the displacement data;
step5, inputting the central coordinate z of the target segment H;
step6, searching a track interval [ x1, x2 ] and a supervision section interval [ y1, y2 ] to which the target segment H belongs according to the central coordinate z, and extracting a reference track D and a reference supervision section S corresponding to the track interval and the supervision section interval, wherein z belongs to [ x1, x2 ] and z belongs to [ y1, y2 ];
step7, determining the expected life of the target segment H according to the first life parameter of the reference track D and the second life parameter of the reference monitoring segment S;
step8, extracting a plurality of target segments H with the expected life less than the required life, and outputting the image supervision request of the target segments H.
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| CN107024182A (en) * | 2017-03-16 | 2017-08-08 | 东华理工大学 | A kind of shield tunnel deformation wireless monitor system and method |
| CN110006348A (en) * | 2019-03-19 | 2019-07-12 | 天津大学前沿技术研究院有限公司 | A kind of early warning type Shield-bored tunnels segments' joints waterproofing performance intelligent monitoring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103544556B (en) * | 2013-09-06 | 2017-10-24 | 上海大学 | Tunnel lifecycle management system and method |
| CN106225766A (en) * | 2016-07-01 | 2016-12-14 | 陕西铁道工程勘察有限公司 | Monitoring and managing method is analyzed in structure sedimentation based on 3S technology monitoring |
| CN107313784A (en) * | 2017-06-23 | 2017-11-03 | 佛山科学技术学院 | A kind of metro shield section of jurisdiction |
| CN107818372A (en) * | 2017-11-30 | 2018-03-20 | 广州轨道交通建设监理有限公司 | A kind of shield duct piece quality cruising inspection system |
| CN108049888A (en) * | 2018-01-16 | 2018-05-18 | 西南交通大学 | It is a kind of for the tunnel structure in metro shield section and stratum consolidation method |
| CN111080015B (en) * | 2019-12-19 | 2023-07-25 | 中国铁建重工集团股份有限公司 | Shield equipment and real-time life prediction system and prediction method thereof |
| CN112483187B (en) * | 2021-01-29 | 2022-04-19 | 中铁工程装备集团有限公司 | Shield tunneling machine pipe piece settlement monitoring system and monitoring method |
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| CN107024182A (en) * | 2017-03-16 | 2017-08-08 | 东华理工大学 | A kind of shield tunnel deformation wireless monitor system and method |
| CN110006348A (en) * | 2019-03-19 | 2019-07-12 | 天津大学前沿技术研究院有限公司 | A kind of early warning type Shield-bored tunnels segments' joints waterproofing performance intelligent monitoring method |
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