CN108844479A - A kind of monitoring method of existing spatial steel structure member bending deformation - Google Patents
A kind of monitoring method of existing spatial steel structure member bending deformation Download PDFInfo
- Publication number
- CN108844479A CN108844479A CN201810676369.2A CN201810676369A CN108844479A CN 108844479 A CN108844479 A CN 108844479A CN 201810676369 A CN201810676369 A CN 201810676369A CN 108844479 A CN108844479 A CN 108844479A
- Authority
- CN
- China
- Prior art keywords
- steel structure
- rod piece
- existing spatial
- spatial steel
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to a kind of monitoring methods of existing spatial steel structure member bending deformation, which is characterized in that includes the following steps：Field monitoring is carried out to existing spatial steel structure, generates the three-dimensional point cloud model of existing spatial steel structure；All rod pieces in the three-dimensional point cloud model of existing spatial steel structure are fitted and are numbered, determine the label of each rod piece；According to the ball node of rod pieces all in the three-dimensional point cloud model of existing spatial steel structure, centerline fit is carried out to all rod pieces, obtains the axial equation of all rod pieces；According to the axial equation of all rod pieces, judge whether there is rod piece to occur bending and deformation in the three-dimensional point cloud model of existing spatial steel structure；Label, position and the deflection for determining all rod pieces to occur bending and deformation in the three-dimensional point cloud model of existing spatial steel structure the composite can be widely applied in existing spatial steel structure monitoring field.
Description
Technical field
The present invention relates to a kind of monitoring methods of existing spatial steel structure member bending deformation, belong to existing Steel Space knot
Structure monitors field.
Background technique
Spatial steel structure mainly includes the spatial mesh structures such as rack, reticulated shell and suspended-cable structure and tube truss structure etc..
Spatial steel structure is answered extensively due to having the characteristics that span ability is strong, stress is clear, overall stiffness is big and easy to manufacture and install
For in the fields such as large public building, industrial premises, such as the terminal roof system on airport, coliseum or performance venue, big
Type light industry workshop, coal and stock ground awning etc..Spatial steel structure is generally made of tube truss structure and stayed structure, such as empty
Between network be all made of truss member tension or in compression, stayed structure is mainly made of compression member and drag-line, pipe
Truss structure is made of steel tube member bar tension or in compression.It is broken with intensity that the destruction of spatial steel structure contains monolithic stability destruction
Both bad chief destructive patterns, but either which kind of failure mode are locally possible to rod piece occur curved in spatial steel structure
One or more initial breakoff phenomenons such as bent deformation, pull rod fracture, destruction of a node.Since member bending deformation is disconnected relative to pull rod
Split, destruction of a node etc. destroys sign and is easier to occur to destroy and more universal, for the existing or in-service Steel Space knot built up
Structure, in daily safety of structure Testing and appraisal, assessment and long term monitoring, the bending deformation of steel structural rod piece is to check
One important indicator.
Currently, in the site safety of existing or in-service spatial steel structure checks, to the detection master of member bending deformation
It will manually visually；To there are the rod pieces of obvious bending deformation, the measurement of bending deflection is carried out using total station.But due to
Spatial steel structure moulding is complicated and easily includes up to ten thousand rod pieces, manually visualizes and checks that bending deformation rod piece is clearly present following lack
Point：1) time-consuming and laborious and heavy workload, in inspection personnel's tired operation or very possible omission portion in the case where lack a sense of responsibility
Divide rod piece.2) inspection personnel is normally at below ground or spatial steel structure roof system, main to be checked using visual angle from bottom to top,
It may holiday rod piece under the influence of rod piece blocks.3) the member bending deformation of spatial steel structure shows geometric distortion
Form, it is possible to develop towards any one three-dimensional space direction, if the direction one at the visual angle of manual inspection and bending deformation
It causes or close, will be unable to the bending deformation for checking rod piece.In summary reason, existing artificial visual inspection method are difficult to protect
Demonstrate,prove effective detection of existing spatial steel structure curved bar.If can not find curved bar in manual inspection, total station etc. is special
The equipment of door measurement deformation also will be unable to play a role.Further, it even if having found curved bar in manual inspection, uses
Total station carry out deformation rod piece deformation deflection measurement there is also defects.The existing spatial steel structure of China is more cut using round
Face steel tube member bar, using the deformation of total station survey circular cross-section rod piece, the multiple measuring points axially measured along rod piece are difficult to ensure
Just parallel with cross-sectional axis, the deformation curve of the rod piece thus measured may be made of several sections of broken lines, the amount of deflection error of measurement
It is larger.Therefore, the inspection method for combining total station survey to carry out existing spatial steel structure deformation rod piece and unreliable is manually visualized.
With the development of method for three-dimensional measurement, 3 D laser scanning obtains in the site inspection of existing spatial steel structure
It gradually applies, can use 3 D laser scanning entirely or the existing spatial steel structure in part forms point cloud model, by certain
Reverse-engineering handles the partial model of available rod piece of concern or ball node.However, using method for three-dimensional measurement in bar
Manual inspection is still relied in the bending deformation judgement of part.Meanwhile 3 D laser scanning high equipment cost and complicated for operation,
Higher cost in the application of safety of structure site inspection, cannot achieve the long term monitoring of existing spatial steel structure.In addition, other
Monitoring method such as structural light three-dimensional method for reconstructing is not able to satisfy equally due to needing high power light source and precision is lower outdoors
The needs of existing spatial steel structure monitoring.
Summary of the invention
In view of the above-mentioned problems, a kind of the object of the present invention is to provide results reliable, low cost and easy to operate both having time
Between steel structural rod piece bending deformation monitoring method.
To achieve the above object, the present invention takes following technical scheme：A kind of existing spatial steel structure member bending deformation
Monitoring method, which is characterized in that include the following steps：Field monitoring is carried out to existing spatial steel structure, generates existing space
The three-dimensional point cloud model of steel construction；All rod pieces in the three-dimensional point cloud model of existing spatial steel structure are fitted and are numbered,
Determine the label of each rod piece；According to the ball node of rod pieces all in the three-dimensional point cloud model of existing spatial steel structure, to all
Rod piece carries out centerline fit, obtains the axial equation of all rod pieces；According to the axial equation of all rod pieces, existing Steel Space is judged
Whether there is rod piece to occur bending and deformation in the three-dimensional point cloud model of structure；In the three-dimensional point cloud model for determining existing spatial steel structure
Label, position and the deflection of all rod pieces to occur bending and deformation.
Further, field monitoring is carried out to existing spatial steel structure, generates the three-dimensional point cloud mould of existing spatial steel structure
Type, specially：Field monitoring is carried out to existing spatial steel structure using the camera of multiple and different visual angles arrangement, it is synchronous to obtain once
Or the multi-view image of multiple existing spatial steel structure, and according to the multi-view image of existing spatial steel structure, generation was both had time
Between steel construction main region three-dimensional point cloud model, wherein the main region of existing spatial steel structure be existing spatial steel structure
In include structure stress rod piece region.
Further, all rod pieces in the three-dimensional point cloud model of existing spatial steel structure are fitted and are numbered, determined
The label of each rod piece, detailed process are：The three-dimensional point cloud model of existing spatial steel structure is reconstructed, correspondence obtains existing
The three-dimensional triangulation shape gridding methods of spatial steel structure, and obtain the information of three-dimensional triangulation shape gridding methods；According to three-dimensional three
The information of hexagonal lattice model identifies all rod pieces, obtain include grid vertex position information several rod piece collection
It closes, and each rod piece set is numbered, obtain the label of each rod piece；Rod piece set is tentatively rejected；Based on first
Step is rejected as a result, to the progress structure node fitting of three-dimensional triangulation shape gridding methods, and the ball-joint point of each rod piece set is obtained
Coordinate is set, and establishes the corresponding relationship of rod piece set and ball node；According to the corresponding relationship of rod piece set and ball node, reject or
The rod piece set of merger misrecognition and corresponding ball node, determine the ball-joint dot position information of each rod piece set；According to each bar
The ball-joint dot position information of part set identifies all rod piece set, obtains the dense vertex information set of each rod piece,
And according to the dense vertex information set of each rod piece, the label of each rod piece set is updated, each rod piece is obtained
Label.
Further, each rod piece set is numbered and is successively carried out according to the sequencing that rod piece set generates.
Further, according to the axial equation of all rod pieces, judge be in the three-dimensional point cloud model of existing spatial steel structure
It is no to there is rod piece to occur bending and deformation, specially：When the rod piece sheet of existing spatial steel structure is as bending, the rod piece sheet is compared
The initial axial equation of body and the present axial equation for carrying out the rod piece after centerline fit determine whether the rod piece bends change
Shape；When the rod piece sheet of existing spatial steel structure as it is linear when, directly compare the rod piece itself initial axis and the rod piece
Present axis, determine whether the rod piece occurs bending and deformation.
The invention adopts the above technical scheme, which has the following advantages：1, the present invention passes through existing spatial steel structure
Image generates the three-dimensional point cloud model of existing spatial steel structure, is fitted, numbers to the three-dimensional point cloud model, centerline fit etc.
Step can access the monitoring knot of all rod pieces in the three-dimensional point cloud model of existing spatial steel structure without carrying out manual inspection
Fruit, low cost and easy to operate.2, the present invention judges whether it bends using distinct methods for rod piece of different shapes
Deformation, can further increase the accuracy and reliability of monitoring result, can be widely applied to existing spatial steel structure monitoring
In field.
Detailed description of the invention
Fig. 1 is the flow chart of monitoring method of the present invention；
Fig. 2 is to be fitted the flow chart with number to all rod pieces in the present invention；
Fig. 3 is the number schematic diagram of a certain rod piece set in the present invention；
Fig. 4 is the schematic diagram that in the present invention all rod pieces are carried out with centerline fit.
Specific embodiment
Come to carry out detailed description to the present invention below in conjunction with attached drawing.It should be appreciated, however, that attached drawing has been provided only more
Understand the present invention well, they should not be interpreted as limitation of the present invention.
As shown in Figure 1, the monitoring method of existing spatial steel structure member bending deformation provided by the invention, including following step
Suddenly：
1) field monitoring is carried out to existing spatial steel structure, and uses multi-angle of view geometry three-dimensional reconstruction algorithm, generated existing
The three-dimensional point cloud model of spatial steel structure main region, specially：
Existing spatial steel structure field monitoring, the quantity and parameter of camera are carried out using the camera of multiple and different visual angles arrangement
It should meet and the visual angle of existing spatial steel structure main region and the depth of field are covered, wherein the main region of existing spatial steel structure
For the region in existing spatial steel structure including structure stress rod piece, and it is main by three-dimensional reconstruction to generate existing spatial steel structure
The three-dimensional point cloud model in region.Meanwhile to meet the requirement of wireless monitor, data wireless transmission scheme is worked out, realizes shooting figure
The wireless transmission of picture.
Within one day period, the synchronous multi-view image for obtaining one or many existing spatial steel structures, and using more
Visual angle geometry three-dimensional reconstruction algorithm, generates the three-dimensional point cloud model of existing spatial steel structure main region, wherein multi-angle of view geometry
Three-dimensional reconstruction algorithm belongs to prior art disclosure, and details are not described herein again.It should be noted that using 3 D laser scanning,
The three-dimensional point cloud model of the same available existing spatial steel structure of the methods of Gray code grating, although these methods are in structure
Using inconvenience in long term monitoring, but the three-dimensional point cloud obtained still can be used in the present invention identification part for carrying out member bending deformation
Point.Therefore, this patent does not limit acquisition modes and the source of three-dimensional point cloud model.
2) as shown in Fig. 2, all rod pieces in the three-dimensional point cloud model of existing spatial steel structure are fitted and are numbered, really
The label of fixed each rod piece, specially：
1. the three-dimensional point cloud model of existing spatial steel structure is reconstructed, correspondence obtains the three-dimensional of existing spatial steel structure
Triangular grid model, and obtain the grid vertex position in three-dimensional triangulation shape gridding methods, network topology relationship and
Vertex scheme vector information.
2. according to above-mentioned grid vertex position, network topology relationship and vertex scheme vector information, to all rod piece set
Slightly identified, obtain include grid vertex position information several rod piece set, and according to rod piece set generate it is successive suitable
Sequence is successively numbered each rod piece set, obtains the label of each rod piece.
3. rod piece set very few to grid vertex position information or that distribution length is too short carries out preliminary thick rejecting, obtain thick
Reject result.
4. being rejected based on thick as a result, obtaining each rod piece to the progress structure node fitting of three-dimensional triangulation shape gridding methods
The ball node position coordinates of set, and establish the corresponding relationship of rod piece set and node.
5. according to the corresponding relationship of rod piece set and ball node, the unit and corresponding ball node of rejecting or merger misrecognition,
Finally determine the ball-joint dot position information of each rod piece set.
6. finely being identified according to the ball-joint dot position information of each rod piece set to all rod piece set, obtain every
The dense vertex information set of one rod piece, and according to the dense vertex information set of each rod piece, to the mark of each rod piece set
It number is updated, obtains the label of each rod piece, as shown in Figure 3.
3) as shown in figure 4, according to the ball node of rod pieces all in the three-dimensional point cloud model of existing spatial steel structure, to all
Rod piece carries out centerline fit, obtains the axial equation of all rod pieces.
4) according to the axial equation of all rod pieces, judge whether there is rod piece in the three-dimensional point cloud model of existing spatial steel structure
It occurs bending and deformation, specially：
When the rod piece sheet of existing spatial steel structure is as bending, compare the initial axial equation of the rod piece itself with into
The present axial equation of the rod piece, determines whether the rod piece occurs bending and deformation after row centerline fit；When existing spatial steel structure
Rod piece sheet as it is linear when, directly compare the initial axis of the rod piece itself and the present axis of the rod piece, determine the bar
Whether part occurs bending and deformation.
5) number of all rod pieces to occur bending and deformation, position in the three-dimensional point cloud model of existing spatial steel structure are determined
With deflection (i.e. amount of deflection), and the deformation curve of all rod pieces to occur bending and deformation along its length is recorded.
Further, if it is determined that bending deformation has occurred in rod piece, then can be compared using axis, it is curved to accurately calculate rod piece
Bent maximum defluxion and curved shape, and structure analysis method is used, judge whether the bending deformation of rod piece influences both to have had time
Between steel construction safety.If the safety to existing spatial steel structure temporarily has no significant effect, by primary part observation in subsequent monitoring
The development of deformation of such bending deformation rod piece；If had a significant effect to the safety of existing spatial steel structure, can notify
The maintenance department of existing spatial steel structure repairs processing.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each component, connection type and manufacture craft etc. are all
It can be varied, all equivalents and improvement carried out based on the technical solution of the present invention should not exclude
Except protection scope of the present invention.
Claims (5)
1. a kind of monitoring method of existing spatial steel structure member bending deformation, which is characterized in that include the following steps：
Field monitoring is carried out to existing spatial steel structure, generates the three-dimensional point cloud model of existing spatial steel structure；
All rod pieces in the three-dimensional point cloud model of existing spatial steel structure are fitted and are numbered, determine the mark of each rod piece
Number；
According to the ball node of rod pieces all in the three-dimensional point cloud model of existing spatial steel structure, it is quasi- that axis is carried out to all rod pieces
It closes, obtains the axial equation of all rod pieces；
According to the axial equation of all rod pieces, judge whether have rod piece generation curved in the three-dimensional point cloud model of existing spatial steel structure
Song deformation；
Determine label, position and the deformation of all rod pieces to occur bending and deformation in the three-dimensional point cloud model of existing spatial steel structure
Amount.
2. a kind of monitoring method of existing spatial steel structure member bending deformation as described in claim 1, which is characterized in that right
Existing spatial steel structure carries out field monitoring, generates the three-dimensional point cloud model of existing spatial steel structure, specially：
Field monitoring is carried out to existing spatial steel structure using the camera of multiple and different visual angles arrangement, synchronous acquisition is one or many
The multi-view image of existing spatial steel structure, and according to the multi-view image of existing spatial steel structure, generate existing Steel Space knot
The three-dimensional point cloud model of structure main region, wherein the main region of existing spatial steel structure, which is in existing spatial steel structure, includes
The region of structure stress rod piece.
3. a kind of monitoring method of existing spatial steel structure member bending deformation as described in claim 1, which is characterized in that right
All rod pieces are fitted and number in the three-dimensional point cloud model of existing spatial steel structure, determine the label of each rod piece, specifically
Process is：
The three-dimensional point cloud model of existing spatial steel structure is reconstructed, correspondence obtains the three-dimensional triangulation shape of existing spatial steel structure
Gridding methods, and obtain the information of three-dimensional triangulation shape gridding methods；
According to the information of three-dimensional triangulation shape gridding methods, all rod pieces are identified, obtain including grid vertex position letter
Several rod piece set of breath, and each rod piece set is numbered, obtain the label of each rod piece；
Rod piece set is tentatively rejected；
It is rejected based on preliminary as a result, obtaining each rod piece set to the progress structure node fitting of three-dimensional triangulation shape gridding methods
Ball node position coordinates, and establish the corresponding relationship of rod piece set and ball node；
According to the corresponding relationship of rod piece set and ball node, the rod piece set and corresponding ball node of rejecting or merger misrecognition, really
The ball-joint dot position information of fixed each rod piece set；
According to the ball-joint dot position information of each rod piece set, all rod piece set are identified, the thick of each rod piece is obtained
Close vertex information set, and according to the dense vertex information set of each rod piece, the label of each rod piece set is updated,
Obtain the label of each rod piece.
4. a kind of monitoring method of existing spatial steel structure member bending deformation as claimed in claim 3, which is characterized in that right
Each rod piece set is numbered successively to be carried out according to the sequencing that rod piece set generates.
5. special such as a kind of described in any item monitoring methods of existing spatial steel structure member bending deformation of Claims 1-4
Sign is, according to the axial equation of all rod pieces, judges whether there is rod piece hair in the three-dimensional point cloud model of existing spatial steel structure
Raw bending deformation, specially：
When the rod piece sheet of existing spatial steel structure is as bending, compares the initial axial equation of the rod piece itself and carry out axis
The present axial equation of the rod piece, determines whether the rod piece occurs bending and deformation after line fitting；
When the rod piece sheet of existing spatial steel structure as it is linear when, directly compare the rod piece itself initial axis and the rod piece
Present axis, determine whether the rod piece occurs bending and deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810676369.2A CN108844479B (en) | 2018-06-27 | 2018-06-27 | Method for monitoring bending deformation of existing space steel structure rod piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810676369.2A CN108844479B (en) | 2018-06-27 | 2018-06-27 | Method for monitoring bending deformation of existing space steel structure rod piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108844479A true CN108844479A (en) | 2018-11-20 |
| CN108844479B CN108844479B (en) | 2020-12-29 |
Family
ID=64202926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810676369.2A Active CN108844479B (en) | 2018-06-27 | 2018-06-27 | Method for monitoring bending deformation of existing space steel structure rod piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108844479B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397495A (en) * | 2020-04-23 | 2020-07-10 | 四川朗坤建筑工程有限公司 | Safety monitoring method and device suitable for various steel structures |
| CN115661212A (en) * | 2022-12-30 | 2023-01-31 | 清华大学 | Building structure reconstruction and extension safety investigation method and device based on computer vision |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2860294B1 (en) * | 1998-02-05 | 1999-02-24 | 黒沢建設株式会社 | Column and beam joining method and joint structure |
| CN103868470A (en) * | 2014-03-10 | 2014-06-18 | 中国地质大学（武汉） | Curvature detection device and method for drill rod |
| CN205427852U (en) * | 2015-12-02 | 2016-08-03 | 浙江树人大学 | Steel construction member bolt installing simulation system |
| CN106524902A (en) * | 2016-08-31 | 2017-03-22 | 江苏中铁山桥重工有限公司 | Real-time monitoring and measuring method for truss segment |
| CN106705848A (en) * | 2017-01-20 | 2017-05-24 | 中冶建筑研究总院有限公司 | Ball-link steel structure grid frame reverse modeling method |
-
2018
- 2018-06-27 CN CN201810676369.2A patent/CN108844479B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2860294B1 (en) * | 1998-02-05 | 1999-02-24 | 黒沢建設株式会社 | Column and beam joining method and joint structure |
| CN103868470A (en) * | 2014-03-10 | 2014-06-18 | 中国地质大学（武汉） | Curvature detection device and method for drill rod |
| CN205427852U (en) * | 2015-12-02 | 2016-08-03 | 浙江树人大学 | Steel construction member bolt installing simulation system |
| CN106524902A (en) * | 2016-08-31 | 2017-03-22 | 江苏中铁山桥重工有限公司 | Real-time monitoring and measuring method for truss segment |
| CN106705848A (en) * | 2017-01-20 | 2017-05-24 | 中冶建筑研究总院有限公司 | Ball-link steel structure grid frame reverse modeling method |
Non-Patent Citations (1)
| Title |
|---|
| 刘晓红: "薄壁截面杆件的自由扭转变形能力比较", 《四川建材》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397495A (en) * | 2020-04-23 | 2020-07-10 | 四川朗坤建筑工程有限公司 | Safety monitoring method and device suitable for various steel structures |
| CN115661212A (en) * | 2022-12-30 | 2023-01-31 | 清华大学 | Building structure reconstruction and extension safety investigation method and device based on computer vision |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108844479B (en) | 2020-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Feng et al. | Damage detection of metro tunnel structure through transmissibility function and cross correlation analysis using local excitation and measurement | |
| Malesa et al. | Monitoring of civil engineering structures using Digital Image Correlation technique | |
| CN105930571B (en) | Big across steel bridge correction method for finite element model based on unit temperature response monitor value | |
| CN108824816B (en) | High-altitude long-span net frame sliding, positioning, installing and monitoring method | |
| CN102323084A (en) | Progressive method for identifying damaged cable and support generalized displacement on the basis of mixed monitoring | |
| CN109471107B (en) | Bridge permanent deformation analysis method based on PS-InSAR technology | |
| Lin et al. | Application of multi-scale (cross-) sample entropy for structural health monitoring | |
| CN109099975A (en) | A kind of building structure health monitoring systems | |
| CN104634785A (en) | Novel concrete plane crack prediction, evaluation and graphical output method | |
| CN101806667B (en) | Progressive method for identifying damaged cable and support displacement based on cable force monitoring | |
| Guldur et al. | Condition assessment of bridges using terrestrial laser scanners | |
| CN109900804A (en) | A kind of metal material crackle Quantitative Monitoring method based on supersonic guide-wave | |
| CN108844479A (en) | A kind of monitoring method of existing spatial steel structure member bending deformation | |
| CN106097380A (en) | A kind of system and method for core rod of insulator defect on-line checking based on image | |
| CN113237885B (en) | Building performance evaluation method based on structural health monitoring data | |
| CN108548497A (en) | It is a kind of that system and monitoring method are monitored based on the high gradient slope of radar and infrared ray | |
| Peng et al. | Long-term condition monitoring of cables for in-service cable-stayed bridges using matched vehicle-induced cable tension ratios | |
| CN102252861A (en) | Progressive method for identifying support generalized displacement of damaged cable based on space coordinate monitoring | |
| CN102323075B (en) | Progressive method for identifying damaged cable, slack cable and support generalized displacement on basis of angle monitoring | |
| CN109029541B (en) | Track corrugation detection method | |
| CN101832875B (en) | Progressive cable structure health monitoring method based on cable force monitoring | |
| Davila Delgado et al. | Modelling, management, and visualisation of structural performance monitoring data on BIM | |
| CN102323074A (en) | The method of going forward one by one based on the generalized displacement of hybrid monitoring identification damaged cable slack line bearing | |
| CN104778331A (en) | Spatial interpolation method for long-span bridge monitoring data | |
| Ebrahimi et al. | Automated condition assessment of sanitary sewer pipes using LiDAR inspection data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |