CN109459384A - A kind of packaged type bridges hinge seam damage classifying classification evaluation method and evaluation system - Google Patents
A kind of packaged type bridges hinge seam damage classifying classification evaluation method and evaluation system Download PDFInfo
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Abstract
The invention discloses a kind of packaged type bridges to cut with scissors seam damage classifying classification evaluation method and evaluation system, to road quality classification divides along the line locating for packaged type bridges detected；By hinge seam on the left of plate-girder, right side plate-girder beam bottom span centre section is respectively equipped with the first displacement sensor and second displacement sensor measures the absolute displacement of adjacent plate-girder；The relative displacement for measuring adjacent plate-girder by the way that U-shaped displacement sensor is arranged between adjacent plate-girder；Hinge seam disease length ratio and plate-girder relative displacement ratio are calculated than computing module by hinge seam disease length computation module and plate-girder relative displacement respectively；By hinge seam Damage Evaluation module locating for the packaged type bridges along based on road quality classification, in conjunction with the calculated result of hinge seam disease length ratio and the calculated result of plate-girder relative displacement ratio.The judgement that hinge seam damage can be carried out in the case where uninterrupted traffic of the invention.
Description
Technical field
The invention belongs to bridge structure assessment technology field, especially a kind of packaged type bridges hinge seam damage classifying classification is commented
Valence method and evaluation system.
Background technique
Hinge seam is the weak link of Hollow Slab Beam Bridge, early disease once occurs, performance can sharply decline, and influence bridge
The pass force crossly characteristic of structure weakens structure holistic resistant behavior, leads to single slab bearing, directly affect structure using safe and
Service life.It is main at present to be detected by structure of the load test method to hinge seam about the judgement of hinge seam health status,
The impaired mode of loading test method judgement hinge seam mainly passes through detailed analysis to Transverse Distribution, judges that Transfer of Shear is
It is no normal, but this mode needs to spend a large amount of manpower and material resources, so being difficult to implement in large area.
102608026 B of patent CN is according to load, position and the actual measurement plate-girder displacement etc. in bridge static loading test
Information obtains hinge seam shearing and hinge seam rigidity.Hinge seam force transfer capacity index Λ i and hinge seam rigidity are defined than index λ i, and is proposed
The method judged accordingly hinge seam degree of injury, this method need to expend a large amount of manpower and material resources based on loading test；Open pivot
The non-contact detection method of literary hollow slab girder hinge seam studies (J) low temperature Building technology, and 2017,39 (10): 87-89. is used
The ratio of plate-girder relative displacement and cored slab displacement is as evaluation index, test analysis reality in the case where uninterrupted traffic
The each point displacement of bridge hollow slab girder hinge seam adjacent, and lesion assessment is made to hinge seam, but this method only considers hinge seam lesion ribbon
The change in displacement come not can accurately reflect hinge and stitch impaired truth as evaluation criterion.
In addition, the evaluation for cutting with scissors seam damage to packaged type bridges cannot treat different things as the same, the bridge pair of different traffic loading grades
Hinge seam bearing capacity requirement it is also not quite identical, therefore, hinge seam impairment scale need to according to locating for bridge along highway grade
Carry out classification.Key position and weak link of the hinge seam as assembled plate girder bridge are badly damaged pair in order to avoid hinge is stitched
The safety of bridge and durability have an impact, and need to propose that the new technology for being directed to cored slab hinge seam Damage Evaluation just seems especially
It is important.
Summary of the invention
The purpose of the present invention is to provide a kind of packaged type bridges to cut with scissors seam damage classifying classification evaluation method and evaluation system,
The judgement of hinge seam damage can be carried out in the case where uninterrupted traffic.
The technical solution for realizing the aim of the invention is as follows:
A kind of packaged type bridges hinge seam damage classifying classification evaluation method, comprising the following steps:
Step 1 divides road quality classification along locating for packaged type bridges detected；
Step 2 calculates hinge seam disease length ratio: length L1 of the measurement with disease hinge seam measures the length L2 of single span plate-girder,
Hinge seam disease length ratio λ is calculated, wherein λ=L1/L2；
Step 3 calculates plate-girder relative displacement ratio: the absolute displacement of adjacent plate-girder is measured, if dLFor the plate-girder in hinge seam left side
Absolute displacement, dRFor the plate-girder absolute displacement on hinge seam right side；Measure the relative displacement Δ d of adjacent plate-girder；Plate-girder phase is calculated
To Displacement Ratio δ:
Step 4, locating for the packaged type bridges along based on road quality classification, in conjunction with hinge seam disease length ratio λ and plate-girder
Relative displacement ratio two evaluation indexes of δ carry out hinge seam damage classifying grading evaluation.
A kind of packaged type bridges hinge seam damage classifying Grading system, including the first displacement sensor, second displacement pass
Sensor, third displacement sensor, data collecting card, computer based data processing system；First displacement sensor,
Two displacement sensors are separately positioned on the plate-girder beam bottom span centre section part of the hinge seam left and right sides, respectively to measure hinge seam left side
The plate-girder absolute displacement of plate-girder absolute displacement and hinge seam right side；The third displacement sensor is U-typed displacement sensor, to
Measure the relative displacement of adjacent plate-girder；First displacement sensor, second displacement sensor, third displacement sensor will acquire
Data data processing system is transferred to by data collecting card；The data processing system includes data input module, hinge seam
Disease length computation module, plate-girder relative displacement are than computing module, table memory module, hinge seam Damage Evaluation module；
Length, the length of single span plate-girder of the data input module to input tape disease hinge seam；
It is long to calculate hinge seam disease to the data using data input module input for the hinge seam disease length computation module
Degree ratio；
The hinge seam disease relative displacement is than computing module to calculate plate-girder relative displacement ratio；
The table memory module is to store road quality classification division table；
The road quality classification of the hinge seam Damage Evaluation module adopting form memory module storage divides table, and combines hinge seam length
Spend the calculated result of ratio and the calculated result of plate-girder relative displacement ratio.
Compared with prior art, the present invention its remarkable advantage:
(1) a kind of packaged type bridges of the invention hinge seam damage classifying classification evaluation method, with edge locating for packaged type bridges
The classification of packaged type bridges is carried out based on the road quality classification of line, it is contemplated that the bridge of different traffic loading grades is to hinge
Seam bearing capacity requires not quite identical realistic problem.
(2) a kind of packaged type bridges of the invention hinge seam damage classifying classification evaluation method uses hinge seam disease length
It is overlapped overall merit than λ and plate-girder relative displacement ratio δ two indices, method is more scientific and reasonable.
(1) a kind of packaged type bridges of the invention hinge seam damage classifying classification evaluation method and system, hinge seam disease length
It is relatively simple easy to acquire than the data of λ and plate-girder relative displacement ratio two evaluation indexes of δ, can be in the case where uninterrupted traffic
Carry out the judgement of hinge seam damage.
Present invention is further described in detail with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the flow chart of the method for the present invention.
Fig. 2 is plate-girder displacement sensor test schematic of the invention
Fig. 3 is case study on implementation concrete hollow slab beam structure schematic diagram of the present invention.
Specific embodiment
In order to illustrate technical solution of the present invention and technical purpose, with reference to the accompanying drawing and specific embodiment is the present invention
It is further to introduce.
In conjunction with Fig. 1, a kind of packaged type bridges hinge seam damage classifying classification evaluation method of the invention, comprising the following steps:
Step 1 divides road quality classification along locating for packaged type bridges detected, the road quality classification criteria for classifying
As shown in table 1.Wherein, Class I highway and highway belong to high-grade highway, and Class II highway belongs to middle grade highway, and three-level is public
Road and Class IV highway belong to low-grade highway.
1 road quality classification of table divides table
Step 2 calculates hinge seam disease length ratio:
The hinge seam that selection carries out hinge seam Damage Evaluation carries out appearance detection, length L1 (disease of the measurement with disease hinge seam
Harmful type is white including analysis, seep water, jointing falls off), same position carries remembering with single disease maximum length for multiple diseases, measures
Hinge seam disease length ratio λ is calculated, wherein λ=L1/L2,0≤λ≤1 in the length L2 of single span plate-girder.
Step 3 calculates hinge seam disease relative displacement ratio:
Selection carries out the hinge seam and its adjacent plate-girder of hinge seam Damage Evaluation, measures the absolute displacement of adjacent plate-girder, if
dLFor the plate-girder absolute displacement in hinge seam left side, dRFor the plate-girder absolute displacement on hinge seam right side；The relative displacement of adjacent plate-girder is measured,
It is denoted as Δ d；Plate-girder relative displacement ratio δ is calculated:
As an implementation, it in conjunction with Fig. 2, is set respectively in 3 left side plate-girders 1 of hinge seam, 2 beam bottom span centre section of right side plate-girder
There are the first displacement sensor 5 and second displacement sensor 6, the plate-girder absolute displacement and hinge seam to measure hinge seam left side are right respectively
The plate-girder absolute displacement d of sideL、dR；The relative displacement Δ that U-typed displacement sensor 4 measures adjacent plate-girder is set between adjacent plate-girder
d。
It is to be noted that carry out displacement sensor in the case where bridge bears continuous normal carload effect is displaced number
According to reading, it is typical value that shift value, which takes the average value of 3 follow-on test data, and 3 data relative errors must not be higher than
5%, otherwise data invalid need to be retested.
Step 4, locating for the packaged type bridges along based on road quality classification, in conjunction with hinge seam disease length ratio λ and plate-girder
Relative displacement ratio two evaluation indexes of δ carry out hinge seam damage classifying grading evaluation, and evaluation of programme is as shown in table 2 and table 3.
2 Bridges on Highway of table hinge seam Damage Evaluation table
In table 3, low-grade highway bridge hinge seam Damage Evaluation table
Embodiment 1
Selected plate-girder is certain single span concrete hollow slab girder in Beijing-Shanghai Expressway, which uses 20m pre-tensioning system standard
Beam slab, calculating across footpath are 19.6m, are laterally connect and are formed by 13 concrete hollow slab girder hinges, as shown in Fig. 2, deck-siding 0.99m, high
0.85m, hollow radius are 0.313m, and the intensity of concrete is C50, big hinge seam are arranged between plate and plate, as shown in figure 3, plate-girder
Number order be successively from left to right 1# beam~13# beam, the number for cutting with scissors seam is successively from left to right 1# hinge seam~12# hinge seam.
Bridge hinge seam appearance detection is carried out to the concrete hollow slab girder bridge, wherein 3# hinge seam, 6# hinge seam, 7# hinge seam, 9#
Hinge is sewed with apparent hinge seam Disease Characters, and in conjunction with the present invention this 4 hinge seams are carried out with the judgement of hinge seam damage, and measurement band disease is cut with scissors
The length L1 (Damage Types include analyse white, infiltration, jointing falls off) of seam, same position carry multiple diseases with single disease most
Long length note, 4 hinge seam disease statistical conditions are as shown in table 4.
44 hinges of table stitch disease statistical form
The plate-girder impaired to concrete hollow slab girder bridge hinge seam carries out the data acquisition of displacement and relative displacement, exists respectively
The displacement of 3# beam, 4# beam, 6# beam, 7# beam, 8# beam, 9# beam, 10# beam setting vertical displacement sensor measurement beam, in 3# beam -4#
Beam, 6# beam -7# beam, 7# beam -8# beam are arranged between 9# beam -10# beam opposite between " U-shaped " displacement sensor Liang Yuliang
Displacement.Need to carry out the reading of displacement sensor displacement data, displacement in the case where bridge bears continuous normal carload effect
It is typical value that value, which takes the average value of 3 follow-on test data, and 3 data relative errors must not be higher than 5%, otherwise data invalid
It need to be retested, 4 hinge seam degree of impairment are as shown in table 5.
54 hinges of table stitch degree of impairment table
It is located on highway along as belonging to the bridge, hinge seam damage evaluation method is corresponding high-grade using table 2
Highway bridge hinge seam damage evaluation method, the results are shown in Table 6 for hinge seam Damage Evaluation.
64 hinges of table stitch degree of impairment evaluation table
Embodiment 2
The selected road Yangzhou Run Yang Hollow Slab Beam Bridge, the bridge use 13m pre-tensioning system standard beam slab, calculate across footpath and are
12.6m is laterally connect by 13 concrete hollow slab girder hinges and is formed, as shown in Fig. 2, deck-siding 0.99m, high 0.85m, hollow radius are
0.324m, the intensity of concrete are C50, and big hinge seam is arranged between plate and plate, as shown in figure 3, the number order of plate-girder from a left side to
The right side is successively 1# beam~13# beam, and the number for cutting with scissors seam is successively from left to right 1# hinge seam~12# hinge seam.
Bridge hinge seam appearance detection is carried out to the concrete hollow slab girder bridge, wherein 4# hinge seam, 7# hinge are sewed with apparent hinge
Disease Characters are stitched, in conjunction with the present invention this 2 hinge seams are carried out with the judgement of hinge seam damage, length L1 (disease of the measurement with disease hinge seam
Harmful type is white including analysis, seep water, jointing falls off), same position carrying multiple diseases are remembered with single disease maximum length, 2
Hinge seam disease statistical conditions are as shown in table 7.
72 hinges of table stitch disease statistical conditions table
The plate-girder impaired to concrete hollow slab girder bridge hinge seam carries out the data acquisition of displacement and relative displacement, exists respectively
The displacement of 4# beam, 5# beam, 7# beam, 8# beam setting vertical displacement sensor measurement beam, in 4# beam -5# beam, 7# beam -8# beam, between
Relative displacement between " U-shaped " displacement sensor Liang Yuliang is set.It needs to bear continuous normal carload in bridge
The reading of lower carry out displacement sensor displacement data is acted on, it is typical value that shift value, which takes the average value of 3 follow-on test data, and
3 times data relative error must not be higher than 5%, and otherwise data invalid need to be retested, and 2 hinges stitch degree of impairment such as 8 institute of table
Show.
82 hinges of table stitch degree of impairment table
It is located on highway along as belonging to the bridge, hinge seam damage evaluation method is corresponding high-grade using table 2
Highway bridge hinge seam damage evaluation method, the results are shown in Table 9 for hinge seam Damage Evaluation.
92 hinges of table stitch degree of impairment evaluation table
Evaluation method according to the present invention, the invention also discloses a kind of packaged type bridges to cut with scissors seam damage classifying grading evaluation
System, including the first displacement sensor 5, second displacement sensor 6, third displacement sensor 4, data collecting card, based on calculate
The data processing system of machine；First displacement sensor 5, second displacement sensor 6 are separately positioned on 3 left and right sides of hinge seam
2 beam bottom span centre section part of plate-girder, respectively to measure the plate-girder absolute displacement in hinge seam left side and the absolute position of plate-girder on hinge seam right side
Move dL、dR；The third displacement sensor 4 is U-typed displacement sensor, to measure the relative displacement Δ d of adjacent plate-girder.
The data of acquisition are passed through number by first displacement sensor 5, second displacement sensor 6, third displacement sensor 4
Data processing system is transferred to according to capture card；The data processing system includes data input module, hinge seam disease length computation
Module, plate-girder relative displacement are than computing module, table memory module, hinge seam Damage Evaluation module；
The data input module is to the length L1 of input tape disease hinge seam, the length L2 of single span plate-girder；
It is long to calculate hinge seam disease to the data using data input module input for the hinge seam disease length computation module
Spend ratio, calculating process are as follows:
λ=L1/L2,0≤λ≤1
The hinge seam disease relative displacement is than computing module to calculate plate-girder relative displacement ratio, detailed process are as follows:
The table memory module is specific such as table 1 to store road quality classification division table；
The road quality classification of the hinge seam Damage Evaluation module adopting form memory module storage divides table, and combines hinge seam disease
The calculated result of evil length ratio and the calculated result of plate-girder relative displacement ratio provide hinge seam state outcome by table 2 and table 3.
1 Bridges on Highway of table hinge seam Damage Evaluation table
In table 2, low-grade highway bridge hinge seam Damage Evaluation table
Claims (7)
1. a kind of packaged type bridges hinge seam damage classifying classification evaluation method, which comprises the following steps:
Step 1 divides road quality classification along locating for packaged type bridges detected；
Step 2 calculates hinge seam disease length ratio: length L1 of the measurement with disease hinge seam measures the length L2 of single span plate-girder, calculates
Obtain hinge seam disease length ratio λ, wherein λ=L1/L2；
Step 3 calculates plate-girder relative displacement ratio: the absolute displacement of adjacent plate-girder is measured, if dLFor the absolute position of plate-girder in hinge seam left side
It moves, dRFor the plate-girder absolute displacement on hinge seam right side；Measure the relative displacement Δ d of adjacent plate-girder；Plate-girder relative displacement is calculated
Than δ:
Step 4, locating for the packaged type bridges along based on road quality classification, it is opposite in conjunction with hinge seam disease length ratio λ and plate-girder
Two evaluation indexes of Displacement Ratio δ carry out hinge seam damage classifying grading evaluation.
2. packaged type bridges hinge seam damage classifying classification evaluation method according to claim 1, which is characterized in that measurement phase
The absolute displacement of adjacent plate-girder, by the left of hinge seam plate-girder, right side plate-girder beam bottom span centre section be respectively equipped with the first displacement sensing
Device and second displacement sensor measure；The relative displacement of adjacent plate-girder is measured by the way that U-shaped displacement sensing is arranged between adjacent plate-girder
Device measures.
3. packaged type bridges hinge seam damage classifying classification evaluation method according to claim 1, which is characterized in that step 4
The classification and rating evaluation scheme are as follows:
1 Bridges on Highway of table hinge seam Damage Evaluation table
In table 2, low-grade highway bridge hinge seam Damage Evaluation table
4. a kind of packaged type bridges hinge seam damage classifying Grading system, which is characterized in that including the first displacement sensor
(5), second displacement sensor (6), third displacement sensor (4), data collecting card, computer based data processing system；
First displacement sensor (5), second displacement sensor (6) be separately positioned on hinge seam (3) at left and right sides of plate-girder beam bottom across
Middle section part, respectively to measure the plate-girder absolute displacement in hinge seam left side and the plate-girder absolute displacement on hinge seam right side；The third
Displacement sensor (4) is U-shaped displacement sensor, to measure the relative displacement of adjacent plate-girder；First displacement sensor
(5), the data of acquisition are transferred at data by second displacement sensor (6), third displacement sensor (4) by data collecting card
Reason system；The data processing system includes data input module, hinge seam disease length computation module, hinge seam disease relative displacement
Than computing module, table memory module, hinge seam Damage Evaluation module；
Length, the length of single span plate-girder of the data input module to input tape disease hinge seam；
The hinge seam disease length computation module calculates hinge seam disease length to the data using data input module input
Than；
The plate-girder relative displacement is than computing module to calculate plate-girder relative displacement ratio；
The table memory module is to store road quality classification division table；
The road quality classification of the hinge seam Damage Evaluation module adopting form memory module storage divides table, and combines hinge seam disease long
Spend the calculated result of ratio and the calculated result of plate-girder relative displacement ratio.
5. packaged type bridges hinge seam damage classifying Grading system according to claim 4, which is characterized in that the hinge
Stitch the calculating process that disease length computation module calculates hinge seam disease length ratio λ are as follows:
λ=L1/L2, wherein L1 is the length with disease hinge seam, and L2 is the length of single span plate-girder.
6. packaged type bridges hinge seam damage classifying Grading system according to claim 4, which is characterized in that the plate
Beam relative displacement calculates the process of plate-girder relative displacement ratio δ than computing module are as follows:
Wherein dL、dRThe respectively absolute position of plate-girder of the plate-girder absolute displacement in hinge seam left side and hinge seam right side
It moves；Δ d is the relative displacement of adjacent plate-girder.
7. packaged type bridges hinge seam damage classifying Grading system according to claim 1, which is characterized in that hinge seam damage
Hurt evaluation module according to the form below rule and provide hinge seam state outcome:
1 Bridges on Highway of table hinge seam Damage Evaluation table
In table 2, low-grade highway bridge hinge seam Damage Evaluation table
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| CN109933936A (en) * | 2019-03-22 | 2019-06-25 | 安徽省交通控股集团有限公司 | A kind of rapid method for assessment of Hollow Slab Beam Bridge hinge seam pass force crossly ability |
| CN112197920A (en) * | 2020-08-27 | 2021-01-08 | 绍兴文理学院 | Bridge structure health monitoring system based on big data |
| CN112857993A (en) * | 2021-01-05 | 2021-05-28 | 浙江省建筑科学设计研究院有限公司 | Method and device for evaluating damage of large hinge joint between precast slab beams |
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| CN114136776A (en) * | 2021-11-22 | 2022-03-04 | 中国铁道科学研究院集团有限公司 | Measuring and evaluating system and evaluating method for connection structure of assembled steel-concrete beam |
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| CN109933936A (en) * | 2019-03-22 | 2019-06-25 | 安徽省交通控股集团有限公司 | A kind of rapid method for assessment of Hollow Slab Beam Bridge hinge seam pass force crossly ability |
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| CN112857993A (en) * | 2021-01-05 | 2021-05-28 | 浙江省建筑科学设计研究院有限公司 | Method and device for evaluating damage of large hinge joint between precast slab beams |
| CN112857993B (en) * | 2021-01-05 | 2024-03-19 | 浙江省建筑科学设计研究院有限公司 | Method and device for evaluating damage of large hinge joints between prefabricated plate beams |
| CN112945969A (en) * | 2021-01-26 | 2021-06-11 | 浙江省交通运输科学研究院 | Hollow slab beam bridge hinge joint damage identification method and system based on machine vision measurement |
| CN112945969B (en) * | 2021-01-26 | 2022-09-23 | 浙江省交通运输科学研究院 | Hollow slab beam bridge hinge joint damage identification method and system based on machine vision measurement |
| CN114136776A (en) * | 2021-11-22 | 2022-03-04 | 中国铁道科学研究院集团有限公司 | Measuring and evaluating system and evaluating method for connection structure of assembled steel-concrete beam |
| CN114136776B (en) * | 2021-11-22 | 2024-03-08 | 中国铁道科学研究院集团有限公司 | Measurement and evaluation system and evaluation method for assembled steel-concrete beam connection structure |
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