CN1595163A - Intelligent health observation system for roof network frame construction with large-scale complex body type - Google Patents
Intelligent health observation system for roof network frame construction with large-scale complex body type Download PDFInfo
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- CN1595163A CN1595163A CN 200410013359 CN200410013359A CN1595163A CN 1595163 A CN1595163 A CN 1595163A CN 200410013359 CN200410013359 CN 200410013359 CN 200410013359 A CN200410013359 A CN 200410013359A CN 1595163 A CN1595163 A CN 1595163A
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Abstract
This invention relates to an intelligent and healthy monitoring system for large complex roof web structure, which comprises sensor system, collection communication interface and data base for storing data and is characterized by the following: there are located with intelligent alarming system of the web structure working status and intelligent system to support steel racket work status and web structure pole and ball joint self diagnose system for welding crack and web structure anti-elapse safe real time valuation system between the communication interface and the data base to store data. This invention can realize the real-time automatic working status alarming , structure damage self-diagnose and structure anti-elapse safe valuation to ensure the safety in the use of the web structure.
Description
Technical field
The invention belongs to the Structural Engineering field, is a kind of intelligent health monitoring system to large complicated build Roof Latticed Truss Structure specifically.
Background technology
Because large complicated build Roof Latticed Truss Structure (as the roof structure of large-scale stadium and public place of entertainment) can make us obtain bigger usage space, and can have changeable moulding attractive in appearance, therefore it becomes the maximum a kind of structural shape of application in the space structure in China with obtain swift and violent development all over the world.It is formed by connecting by a large amount of rod members in two planes or the space that curved surface constituted, forms wind up pole face and lower edge pole face, links to each other with montant with web member therebetween.Generally speaking, it is linked to be one-piece construction with round steel pipe and the welding of hollow steel ball node.Along with the increase of structural span, the complicacy of large complicated build Roof Latticed Truss Structure also increases thereupon.For the typhoon hotspot, wind is the main design load of large span complex shape Roof Latticed Truss Structure.Because people can't know the working condition of grid structure under the high wind effect, so three kinds of main forms of destroying of grid structure: " body of rod lateral deflection, the drawing crack of rod member weld seam and ball node destroy " is difficult in time finding.This will cause the decline of structures under wind ability, has brought great hidden danger for the security of structure.For fear of the generation of the engineering project disaster that causes therefrom, guarantee the safety of people's life and property, prolong the serviceable life of engineering structure, just require we can be in time the duty of solution structure, find the damage of structure the unknown in time.For this reason, foundation can realize the Structure with Intelligent Structure System of automatic warning of arrangement works state and structural damage automatic diagnosis just very necessary.
Along with the development of infotech, setting up the Structure with Intelligent Structure System with structural health automatic diagnostic function has had possibility.The intelligent health monitoring system of the large complicated build Roof Latticed Truss Structure that the present invention proposes is based upon on the basis of infotech and civil engineering structure technology.
Summary of the invention
The purpose of this invention is to provide and a kind ofly be intended in time large complicated build Roof Latticed Truss Structure duty and structural damage are diagnosed and reported to the police, with the intelligent health monitoring system of large complicated build Roof Latticed Truss Structure under the wind action of the safety that guarantees grid structure.
The present invention is by sensing system, the database of gathering communication transmission interface and storage data constitutes, wherein sensing system output links to each other with collection communication transmission interface, the output of gathering the communication transmission interface is connected with the database of storage data, the database output signal of storage data is connected with human-computer interaction interface, is characterized in: gather the intelligent alarm system that also is connected with the grid structure duty between the database of communication transmission interface and storage data and (or) support the steel corbel duty intelligent alarm system and (or) grid structure rod member and the drawing crack of ball node weld seam damage auto-check system with (or) diminish the grid structure system and resist the real-time assessment system of safety-type that collapses;
The intelligent alarm system of above-mentioned grid structure duty comprises real-time monitoring and non real-time monitoring two parts, wherein non real-time monitoring part is according to wind load identification and structural finite element model correction result, finish and set up unit wind speed effect structural response root variance database under all wind direction operating modes, monitoring part in real time is according to the mean wind speed of grid structure in 10 minute period, the mean wind direction and the structural response peak factor, call the structural response root variance in the database, obtain the peak response of all members of grid structure, and according to the warning of the member safety margin implementation structure member duty of setting;
The intelligent alarm system of above-mentioned support steel bracket duty is a proper vector with the instantaneous strain value of the bracket key point obtained, use the approximately principle of selecting of Fuzzy Pattern Recognition, from the bracket stress field library of having set up, identify the instantaneous stress field of whole bracket, and finish the warning of bracket duty according to this;
The utilization of above-mentioned grid structure rod member and the drawing crack of ball node weld seam damage auto-check system is placed in the three-dimensional acceleration responsive TIME HISTORY SIGNAL of the ball node that the three-dimensional acceleration transducer on the grid structure ball node records, adopt wavelet transformation technique that response signal is analyzed, whether this node and near zone thereof are made a definite diagnosis in the sudden change of catching HFS rod member weld seam drawing crack damage and when drawing crack;
Above-mentioned have that damage grid structure system is anti-collapses the real time security assessment system by obtaining the bearing load on each support bracket of grid structure, judge whether it has surmounted the ultimate bearing capacity of bracket, if break bounds, then destroy and cause the duty of discerning whole grid structure rod member the grid structure rod member duty library (elasticity, elastoplasticity, break and lateral deflection) from the bracket of having set up.
Above-mentioned database also is connected with the remote user terminals machine by remote server and network.
Characteristics of the present invention are: to the large span complex shape Roof Latticed Truss Structure under the wind action, set up the complete set technology of monitoring of structure health intelligent and diagnosis, it can realize the automatic warning to the grid structure duty, the automatic diagnosis of structural damage and the automatic assessment of the anti-real time security that collapses of structure, to guarantee grid structure safety in use.
Description of drawings
Fig. 1 is a theory diagram of the present invention.
Fig. 2 realizes principle schematic for the intelligent alarm system of grid structure duty of the present invention.
Fig. 3 realizes principle schematic for the intelligent alarm system of support steel bracket duty of the present invention.
Fig. 4 is grid structure rod member of the present invention and ball node weld seam drawing crack damage auto-check system realization principle schematic.
Fig. 5 realizes principle schematic for the present invention has the anti-actual time safety assessment system that collapses of damage grid structure system.
Fig. 6 is the hardware block diagram of each system of the embodiment of the invention.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
The present invention (Fig. 1) is made of sensing system, collection communication transmission interface, structural health intellectual monitoring and diagnostic system and database.Wherein sensing system output links to each other with collection communication transmission interface, the output of gathering the communication transmission interface is connected with database, database damages auto-check system and has the anti-real-time security assessment system that collapses of damage grid structure to be connected with the drawing crack of ball node weld seam with grid structure duty intelligent alarm system, support steel bracket duty intelligent alarm system, grid structure rod member, and the output signal of database is connected with human-computer interaction interface.
The intelligent alarm system of grid structure duty (Fig. 2):
Because large complicated build Roof Latticed Truss Structure has several ten thousand rod members, and when wind direction not simultaneously wind pressure have diverse distribution and random character again, therefore can't determine in advance at all that the most dangerous rod member arranges strain transducer, thereby can't adopt the direct monitoring technology of routine.The intelligent alarm system of grid structure duty of the present invention is divided in real time and non real-time two parts.The major function of non-real time portions is for setting up unit wind speed effect structural response root variance database under all wind direction operating modes.At first adopt to have the intrinsic mode decomposition technique of space-time stalling characteristic, and this technology is applied to the frequency domain characteristic of recognition reaction wind loads structurally; Simultaneously, adopt the irrelevant method of maximum linear reasonably to arrange to be used for the acceleration transducer of measurement structure response acceleration, again according to the limited mode of structure obtained of actual measurement acceleration responsive, the utilization neural net method comes grid structure is carried out finite element model correction based on node parameter.Discerning the wind load on the grid structure and finishing on the basis of structure finite element model correction, thereby analyzing the root variance database that under each wind direction wind loads effect structural response root variance has been set up structural response according to random vibration theory.The major function of part is the security of obtaining the peak response in 10 minute period of grid structure and judging member according to the member security alarm rank of setting in real time.It utilizes anemoclinograph to obtain 10 minutes mean wind speed and wind direction, utilizes the strain time-histories of strain transducer actual measurement structural elements to determine the peak factor that wind induced structural vibration responds simultaneously.Thus, from the structural response root variance database that non-real time portions is set up, extract unit wind speed effect wind induced structural vibration response root variance under this wind direction according to wind direction, according to 10 minutes mean wind speeds, the peak factor and unit wind speed effect structural response root variances, in the time of just can determining 10 minutes apart from interior grid structure member maximum stress value, and according to the warning of the member safety margin implementation structure member duty of setting.
Support the intelligent alarm system (Fig. 3) of steel corbel duty:
Because the load that the support steel corbel is born can reach several kilotons, and it is the closed enclosure formed steel construction of a complexity, therefore the steel member of its inside can't be installed strain transducer, also can't obtain its three-dimensional strain value, therefore can not adopt conventional direct monitoring technology.The intelligent alarm system of support steel corbel duty of the present invention at first utilizes the strain transducer that is arranged on the key point of steel corbel surface to survey instantaneous strain.Then, be proper vector with the instantaneous strain value of key point, use the approximately principle of selecting of Fuzzy Pattern Recognition, from the bracket stress field library of having set up, identify the instantaneous stress field of bracket, and finish the bracket duty according to this and report to the police.Bracket stress field library is that load is being classified, and obtain by the method for forward analysis on the basis of " load (size, active position)-key point strain-bracket stress field " relation, and " the key point strain characteristics vector-bracket stress field " set up concern the storehouse.
The auto-check system (Fig. 4) of grid structure rod member and ball node weld seam drawing crack damage:
In three kinds of failure modes that grid structure may occur under the wind action, it is least detectable that routine techniques is adopted in rod member and the drawing crack of ball node weld seam.Therefore, the present invention has adopted the damage auto-check system.Grid structure rod member of the present invention and the drawing crack of ball node weld seam damage auto-check system is to adopt " rod member-node " weld seam to pull the time domain assessment method of damage, diagnoses out the damage of structure by the slight change of signal after with wavelet decomposition.Specifically, utilization of the present invention is placed in the three-dimensional acceleration responsive TIME HISTORY SIGNAL of the ball node that the three-dimensional acceleration transducer on the grid structure ball node records, adopt wavelet transformation technique that reaction signal is analyzed again, whether this node place and near weld seam thereof are made a definite diagnosis in the sudden change of catching HFS drawing crack and when drawing crack.
The anti-actual time safety assessment system (Fig. 5) that collapses of damage grid structure system is arranged:
Grid structure itself is the multiple indeterminate structure, even there are three kinds of damages to take place, generally also is difficult for collapsing.Have only when support system takes place to destroy, just the possibility that rack collapses can occur.The anti-actual time safety assessment system that collapses of grid structure when the present invention has set up bracket destruction for this reason.It is of the present invention that the anti-actual time safety assessment system that collapses of damage grid structure system is arranged is respectively to support bearing load on the bracket according to the grid structure that obtains in the grid structure duty intelligent alarm system module, judge whether it has surmounted the ultimate bearing capacity of bracket, if the bracket break bounds is arranged then this bracket loses load-bearing capacity.Thereby the actual destruction pattern that identifies grid structure again the failure mode storehouse according to mode identification method grid structure after the bracket of having built up destroys is evaluated the anti-degree of safety of collapsing of grid structure.Wherein, the foundation that bracket destroys the failure mode storehouse of back grid structure is that dead load and the wind load method with the plan static(al) is loaded step by step, and with the method for forward elastic-plastic analysis, analyzes losing destroyed bracket grid structure, judges and obtain.
The whole principle of work of the present invention is: obtain wind load and structural response information by sensing system, give database by the communication transmission interface with these information transmission.Each obtains required information grid structure duty intelligent alarm system, support steel bracket duty intelligent alarm system and grid structure rod member and ball node weld seam drawing crack damage auto-check system in database, and in view of the above the duty and the damage of rod member weld seam of structure are monitored and diagnosed, simultaneously object information is returned database.Have the anti-real-time security assessment system that collapses of damage grid structure then to obtain from database for information about, anti-security of collapsing is passed a judgement to grid structure in view of the above, and object information is returned database.Finally, database through remote server, Inter net, LAN (Local Area Network), is transferred to above-mentioned monitoring, diagnosis and evaluation results information on user's the terminal computer, is transferred to the user by human-computer interaction interface.
Each system of the present invention (Fig. 6) constitutes by center processing unit MCU and peripheral circuit, all adopt the data bus form to carry out communication between each system and collection communication transmission interface and the database, sensing system adopts the data bus form to carry out communication with collection communication transmission interface equally; Above-mentioned data bus form adopts CAN (control area net) data bus.
The principle of work of each system of the present invention both can have been implemented the method realization of software by each system module, can realize that also two kinds of implementations all belong to the present invention's category required for protection with hardware unit.
The content that is not described in detail in the instructions of the present invention belongs to this area professional and technical personnel's known prior art.
Claims (8)
1, a kind of intelligent health monitoring system of large complicated build Roof Latticed Truss Structure, by sensing system, the database of gathering communication transmission interface and storage data constitutes, wherein sensing system output links to each other with collection communication transmission interface, the output of gathering the communication transmission interface is connected with the database of storage data, the database output signal of storage data is connected with human-computer interaction interface, is characterized in: gather the intelligent alarm system that also is connected with the grid structure duty between the database of communication transmission interface and storage data and (or) support the steel corbel duty intelligent alarm system and (or) grid structure rod member and the drawing crack of ball node weld seam damage auto-check system with (or) diminish the grid structure system and resist the real-time assessment system of safety-type that collapses.
2, the intelligent health monitoring system of large complicated build Roof Latticed Truss Structure as claimed in claim 1, it is characterized in that: the intelligent alarm system of grid structure duty comprises real-time monitoring and non real-time monitoring two parts, wherein non real-time monitoring part is according to wind load identification and structural finite element model correction result, finish and set up unit wind speed effect structural response root variance database under all wind direction operating modes, monitoring part in real time is according to the mean wind speed of grid structure in 10 minute period, the mean wind direction and the structural response peak factor, call the structural response root variance in the database, obtain the peak response of all members of grid structure, and according to the warning of the member safety margin implementation structure member duty of setting.
3, the intelligent health monitoring system of large complicated build Roof Latticed Truss Structure as claimed in claim 1, it is characterized in that: the intelligent alarm system of support steel bracket duty is a proper vector with the instantaneous strain value of the bracket key point obtained, use the approximately principle of selecting of Fuzzy Pattern Recognition, from the bracket stress field library of having set up, identify the instantaneous stress field of whole bracket, and finish the warning of bracket duty according to this.
4, the intelligent health monitoring system of large complicated build Roof Latticed Truss Structure as claimed in claim 1, it is characterized in that: the utilization of grid structure rod member and the drawing crack of ball node weld seam damage auto-check system is placed in the three-dimensional acceleration responsive TIME HISTORY SIGNAL of the ball node that the three-dimensional acceleration transducer on the grid structure ball node records, adopt wavelet transformation technique that response signal is analyzed, whether this node and near zone thereof are made a definite diagnosis in the sudden change of catching HFS rod member weld seam drawing crack damage and when drawing crack.
5, the intelligent health monitoring system of large complicated build Roof Latticed Truss Structure as claimed in claim 1, it is characterized in that: have damage grid structure system to resist and collapse the real time security assessment system, judge whether it has surmounted the ultimate bearing capacity of bracket by obtaining the bearing load on each support bracket of grid structure.If break bounds, then destroy and cause the duty of discerning whole grid structure rod member the grid structure rod member duty library (elasticity, elastoplasticity, break and lateral deflection) from the bracket of having set up.
6, the intelligent health monitoring system of large complicated build Roof Latticed Truss Structure as claimed in claim 1 is characterized in that: database also is connected with the remote user terminals machine by remote server and network.
7, the intelligent health monitoring system of large complicated build Roof Latticed Truss Structure as claimed in claim 1, it is characterized in that: all adopt the data bus form to carry out communication between each system and collection communication transmission interface and the database, sensing system adopts the data bus form to carry out communication with collection communication transmission interface equally.
8, the intelligent health monitoring system of large complicated build Roof Latticed Truss Structure as claimed in claim 7, the data bus form adopts the CAN data bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100133599A CN100487458C (en) | 2004-06-25 | 2004-06-25 | Intelligent health observation system for roof network frame construction with large-scale complex body type |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100133599A CN100487458C (en) | 2004-06-25 | 2004-06-25 | Intelligent health observation system for roof network frame construction with large-scale complex body type |
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| CN1595163A true CN1595163A (en) | 2005-03-16 |
| CN100487458C CN100487458C (en) | 2009-05-13 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420944C (en) * | 2005-12-29 | 2008-09-24 | 西北工业大学 | Detection method for damage of random vibration structure based on correlation function amplitude vector |
| CN101175982B (en) * | 2005-05-19 | 2012-11-28 | 弗劳恩霍弗应用技术研究院 | Method and device for influencing the mechanical load-bearing capability and/or loading of a technical structure |
| CN104484988A (en) * | 2014-11-18 | 2015-04-01 | 浙江大学 | Automatic space structure health monitoring system based on curved-surface wall-climbing robot sensor |
| CN105157590A (en) * | 2015-05-28 | 2015-12-16 | 张家港江苏科技大学产业技术研究院 | Construction health monitoring system based on three-dimensional laser scanning technology |
| CN106338338A (en) * | 2016-10-21 | 2017-01-18 | 河海大学 | Failed rod member monitoring method for wide-span special grid structure |
| CN108120472A (en) * | 2016-11-29 | 2018-06-05 | 中冶天工集团天津有限公司 | The data acquisition processing method and system of a kind of temporary structure safety monitoring |
| CN109405893A (en) * | 2018-12-26 | 2019-03-01 | 中国铁路广州局集团有限公司 | Coastal area high-speed rail station Long-Span Steel Space Structures health monitoring device |
| CN109506965A (en) * | 2018-09-28 | 2019-03-22 | 武汉理工大学 | Weld space grid structure node weld damage substep diagnostic method |
| CN109558680A (en) * | 2018-11-30 | 2019-04-02 | 福州大学 | Bridge multiple target equivalent static wind load calculation method based on POD technology |
| CN114526847A (en) * | 2021-12-30 | 2022-05-24 | 中铁建设集团(杭州)建设有限公司 | Health monitoring system suitable for large-size space net rack |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0676738B2 (en) * | 1988-03-07 | 1994-09-28 | 鹿島建設株式会社 | Stiffness control device for seismic control building frame |
| US4936060A (en) * | 1988-10-14 | 1990-06-26 | J. W. Welsh & Associates, Inc. | Flexible roof control system |
| JP2508241B2 (en) * | 1989-02-23 | 1996-06-19 | 鹿島建設株式会社 | Safety monitoring device for active seismic control and wind control devices |
| US5404132A (en) * | 1994-03-14 | 1995-04-04 | Canty; Jeffery N. | Deflection monitoring system |
-
2004
- 2004-06-25 CN CNB2004100133599A patent/CN100487458C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175982B (en) * | 2005-05-19 | 2012-11-28 | 弗劳恩霍弗应用技术研究院 | Method and device for influencing the mechanical load-bearing capability and/or loading of a technical structure |
| CN100420944C (en) * | 2005-12-29 | 2008-09-24 | 西北工业大学 | Detection method for damage of random vibration structure based on correlation function amplitude vector |
| CN104484988B (en) * | 2014-11-18 | 2017-08-25 | 浙江大学 | Space structure automatic health monitoring system based on curved surface climbing robot sensor |
| CN104484988A (en) * | 2014-11-18 | 2015-04-01 | 浙江大学 | Automatic space structure health monitoring system based on curved-surface wall-climbing robot sensor |
| CN105157590B (en) * | 2015-05-28 | 2018-03-27 | 张家港江苏科技大学产业技术研究院 | A kind of building health monitoring systems based on three-dimensional laser scanning technique |
| CN105157590A (en) * | 2015-05-28 | 2015-12-16 | 张家港江苏科技大学产业技术研究院 | Construction health monitoring system based on three-dimensional laser scanning technology |
| CN106338338A (en) * | 2016-10-21 | 2017-01-18 | 河海大学 | Failed rod member monitoring method for wide-span special grid structure |
| CN108120472A (en) * | 2016-11-29 | 2018-06-05 | 中冶天工集团天津有限公司 | The data acquisition processing method and system of a kind of temporary structure safety monitoring |
| CN109506965A (en) * | 2018-09-28 | 2019-03-22 | 武汉理工大学 | Weld space grid structure node weld damage substep diagnostic method |
| CN109558680A (en) * | 2018-11-30 | 2019-04-02 | 福州大学 | Bridge multiple target equivalent static wind load calculation method based on POD technology |
| CN109558680B (en) * | 2018-11-30 | 2022-06-14 | 福州大学 | Bridge multi-target equivalent static wind load calculation method based on POD technology |
| CN109405893A (en) * | 2018-12-26 | 2019-03-01 | 中国铁路广州局集团有限公司 | Coastal area high-speed rail station Long-Span Steel Space Structures health monitoring device |
| CN114526847A (en) * | 2021-12-30 | 2022-05-24 | 中铁建设集团(杭州)建设有限公司 | Health monitoring system suitable for large-size space net rack |
| CN114526847B (en) * | 2021-12-30 | 2024-03-08 | 中铁建设集团(杭州)建设有限公司 | Health monitoring system suitable for large-scale space network frame |
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