CN116663793A - Multi-scale comprehensive evaluation method and system for toughness of wading pier - Google Patents
Multi-scale comprehensive evaluation method and system for toughness of wading pier Download PDFInfo
- Publication number
- CN116663793A CN116663793A CN202211696175.1A CN202211696175A CN116663793A CN 116663793 A CN116663793 A CN 116663793A CN 202211696175 A CN202211696175 A CN 202211696175A CN 116663793 A CN116663793 A CN 116663793A
- Authority
- CN
- China
- Prior art keywords
- bridge pier
- pier
- obtaining
- damage
- scour
- 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.)
- Pending
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 70
- 230000006378 damage Effects 0.000 claims abstract description 113
- 238000000034 method Methods 0.000 claims abstract description 31
- 238000004590 computer program Methods 0.000 claims description 14
- 238000009991 scouring Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 108010014173 Factor X Proteins 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 208000034699 Vitreous floaters Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
- G06Q10/06311—Scheduling, planning or task assignment for a person or group
- G06Q10/063114—Status monitoring or status determination for a person or group
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0635—Risk analysis of enterprise or organisation activities
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06395—Quality analysis or management
Landscapes
- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Engineering & Computer Science (AREA)
- Strategic Management (AREA)
- Entrepreneurship & Innovation (AREA)
- Economics (AREA)
- Development Economics (AREA)
- Educational Administration (AREA)
- Operations Research (AREA)
- Marketing (AREA)
- Game Theory and Decision Science (AREA)
- Quality & Reliability (AREA)
- Tourism & Hospitality (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of traffic safety, and provides a method and a system for multi-scale comprehensive evaluation of toughness of a wading pier, wherein the method comprises the following steps: obtaining the width of a crack of the bridge pier and the diameter of the bridge pier, calculating to obtain an earthquake-resistant damage value, and obtaining the earthquake-resistant damage degree based on the earthquake-resistant damage value; obtaining wind resistance indexes of the bridge pier, and calculating to obtain wind resistance damage degree; the method comprises the steps of obtaining the resistance and the impact force of a bridge pier, calculating to obtain the collapse probability of the bridge pier, combining the annual navigation quantity, the yaw probability and the geometric probability of the bridge pier to obtain the annual failure frequency, and obtaining the anti-collision damage degree based on the annual failure frequency; obtaining scour indexes of the bridge pier, calculating to obtain scour depth of the bridge pier, combining the pile length, the bearing platform and the total length of the bridge pier, calculating to obtain a scour damage state, and obtaining the scour damage degree based on the scour damage state; and finally, obtaining a comprehensive evaluation result. The toughness and damage degree of the bridge pier are comprehensively and accurately measured.
Description
Technical Field
The invention belongs to the technical field of traffic safety, and particularly relates to a multi-scale comprehensive evaluation method and system for toughness of a wading pier.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Compared with an on-road bridge, the wading bridge pier can be damaged by more environmental factors, and damage detection and repair after damage are more complicated. Under the action of earthquake, the earthquake resistance of the wading bridge pier has larger nonlinear deformation and damage probability in the dynamic water effect; under the action of wind power, particularly under the action of strong wind in extreme weather, the wind resistance of the bridge pier is threatened; in navigable water areas, sailing vessels or floaters such as floating ice and the like can also influence pile foundations of piers; if seasonal floods are encountered, the anti-scouring performance of the wading bridge pier is also a challenge.
The digital twin system can apply the simulation result to the control of the physical system, so that the decision and optimization of the physical system are realized; the damage degree of the damage profile of the wading pier is analyzed and evaluated through digital twinning, so that the toughness bearing capacity of the wading pier can be effectively measured and evaluated.
Under the background, how to effectively establish a comprehensive evaluation index system to carry out multi-scale toughness evaluation on the wading pier, and the digital twin technology is fused to analyze the toughness recovery capability of the wading pier, so that the method has a vital effect on long-term maintenance and use of the bridge.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a multi-scale comprehensive evaluation method and system for toughness of a wading pier, which define scales such as an earthquake-resistant damage value, a annual failure frequency and a scouring damage state, and combine the toughness evaluation of the pier with the four scales, so that the toughness capability and damage degree of the pier can be comprehensively and accurately measured.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the first aspect of the invention provides a multi-scale comprehensive evaluation method for toughness of a wading pier, which comprises the following steps:
obtaining the width of a crack of the bridge pier and the diameter of the bridge pier, calculating to obtain an earthquake-resistant damage value, and obtaining the earthquake-resistant damage degree based on the earthquake-resistant damage value;
obtaining wind resistance indexes of the bridge pier, and calculating to obtain wind resistance damage degree;
the method comprises the steps of obtaining the resistance and the impact force of a bridge pier, calculating to obtain the collapse probability of the bridge pier, combining the annual navigation quantity, the yaw probability and the geometric probability of the bridge pier to obtain the annual failure frequency, and obtaining the anti-collision damage degree based on the annual failure frequency;
obtaining scour indexes of the bridge pier, calculating to obtain scour depth of the bridge pier, combining the pile length, the bearing platform and the total length of the bridge pier, calculating to obtain a scour damage state, and obtaining the scour damage degree based on the scour damage state;
and combining the anti-seismic damage degree, the wind damage degree, the anti-collision damage degree and the anti-brushing damage degree to obtain a comprehensive evaluation result.
Further, the earthquake-resistant damage value is the ratio of the width of the crack of the bridge pier to the diameter of the bridge pier.
Further, the wind resistance index includes: the wind speed is tested by twisting frequency ratio, bridge deck mass and air density ratio, girder inertia radius ratio, girder section shape influence coefficient, attack angle effect coefficient, girder span, lowest order vertical bending self-vibration frequency, lowest order torsion self-vibration frequency and girder flutter.
Further, the bridge collapse probability is:
wherein H is the resistance of the bridge pier, and P is the impact force.
Further, the annual failure frequency is a product of the bridge collapse probability, annual navigation, yaw probability and geometric probability.
Further, the anti-scour index includes: maximum full tide depth, average water resistance width under the condition of maximum full tide depth, average median particle size of river bed sediment and maximum full tide flow rate.
Further, the flushing damage state is the ratio of the flushing depth of the bridge pier to the total length.
The second aspect of the invention provides a wading pier toughness multi-scale comprehensive evaluation system, which comprises:
an earthquake-resistant evaluation module configured to: obtaining the width of a crack of the bridge pier and the diameter of the bridge pier, calculating to obtain an earthquake-resistant damage value, and obtaining the earthquake-resistant damage degree based on the earthquake-resistant damage value;
an anti-wind evaluation module configured to: obtaining wind resistance indexes of the bridge pier, and calculating to obtain wind resistance damage degree;
a collision avoidance evaluation module configured to: the method comprises the steps of obtaining the resistance and the impact force of a bridge pier, calculating to obtain the collapse probability of the bridge pier, combining the annual navigation quantity, the yaw probability and the geometric probability of the bridge pier to obtain the annual failure frequency, and obtaining the anti-collision damage degree based on the annual failure frequency;
a scour evaluation module configured to: obtaining scour indexes of the bridge pier, calculating to obtain scour depth of the bridge pier, combining the pile length, the bearing platform and the total length of the bridge pier, calculating to obtain a scour damage state, and obtaining the scour damage degree based on the scour damage state;
a comprehensive evaluation module configured to: and combining the anti-seismic damage degree, the wind damage degree, the anti-collision damage degree and the anti-brushing damage degree to obtain a comprehensive evaluation result.
A third aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of a method for multi-scale integrated assessment of toughness of a wading pier as described above.
A fourth aspect of the present invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps in a method for multi-scale integrated assessment of toughness of a wading pier as described above when executing the program.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a multi-scale comprehensive evaluation method for toughness of a wading pier, which defines scales such as an earthquake-resistant damage value, a annual failure frequency and a scouring damage state, combines the toughness evaluation of the pier with four scales, solves the problems of single and incomplete evaluation indexes, can comprehensively measure the toughness capacity and damage degree of the pier, is convenient for the detection and maintenance of the bridge, and fills the blank of the multi-scale evaluation method for toughness of the wading pier.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a flow chart of a multi-scale comprehensive evaluation method for toughness of a wading pier according to a first embodiment of the invention;
fig. 2 is a schematic diagram of a multi-scale comprehensive evaluation index system according to a first embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Example 1
The embodiment provides a multi-scale comprehensive evaluation method for toughness of a wading pier, which fuses the four scales of earthquake resistance, wind resistance, collision resistance and scour resistance, and simultaneously adopts a digital twin technology as a main method to provide a reasonable, comprehensive and reliable multi-scale comprehensive evaluation method.
The multi-scale comprehensive evaluation method for toughness of the wading pier provided by the embodiment, as shown in fig. 1, comprises the following steps:
step S1: and constructing a digital twin model based on the physical bridge, and arranging the physical sensor aiming at the bridge pier.
The digital twin bridge model is constructed so as to facilitate the subsequent detection of the micro deformation of the bridge pier and facilitate the real-time analysis and damage degree judgment.
The method comprises the steps of obtaining damage measurement information by applying a sensor to a wading pier; and collecting data of the obtained damage information, and analyzing and calculating.
Step S2: as shown in fig. 2, a multi-scale comprehensive evaluation index system is established, and the multi-scale comprehensive evaluation indexes comprise an earthquake resistance index, a wind resistance index, a collision resistance index and an erosion resistance index.
Four multi-scale evaluation indexes are established in the digital twin system to analyze and calculate the multi-scale evaluation indexes.
Step S3: and quantifying an earthquake resistance index.
The earthquake resistance index is quantized to define the damage state of the bridge pier according to the width condition of the concrete crack, the crack width D is measured by a sensor, and the sensor is led into a digital twin system to carry out modeling stress analysis.
Through measuring bridge pier crack width, carry out dimensionless treatment to crack width, adopt following formula to calculate:
wherein A is the earthquake-resistant damage value of the bridge pier, D is the crack width, D k The pier diameter, a, is an evaluation index of the degree of damage of the pier, and the degree of damage can be further evaluated according to table 1.
By adopting dimensionless treatment, the damage state of the bridge pier can be judged more obviously, the numerical relation between the crack width of the bridge pier and the diameter of the bridge pier is calculated to have obvious linear characteristics, and the difference of the dimensionality between normalized treatment data is adopted, so that a new definition method for the damage degree of the bridge pier is provided.
Table 1, pier earthquake-proof damage degree control table
Step S4: and quantifying wind resistance indexes.
The sensor measures nine wind resistance indexes of twisting frequency ratio, bridge deck mass and air density ratio, girder inertia radius ratio, girder section shape influence coefficient, attack angle effect coefficient, girder span, lowest order vertical bending self-vibration frequency, lowest order torsion self-vibration frequency and girder flutter test wind speed, and modeling stress analysis is carried out.
Wherein C is k The largest value is the judged stability level, C is the stability grading fuzzy vector, and C k For the kth value in the stability hierarchical fuzzy vector, there are four stability levels, k=1, 2,3,4, V is the weight subset, V (j) is the jth value in the weight subset, R is the fuzzy relation matrix of the finite field X to the weight subset V evaluation set B, R jk And the value of the jth row and the kth column in the fuzzy relation matrix is represented.
According to membership functions or experience, V is assigned as:
V＝{0.13，0.12，0.09，0.11，0.11，0.11，0.09，0.10.0.14}
the obtained C value was defined according to table 2, and a damage degree classification was obtained.
Injury-level evaluation set b= (B 1 ，B 2 ，B 3 ，B 4 ). Wherein B is 1 Is stable; b (B) 2 Is of sub-stable type, B 3 For secondary instability, B 4 Is unstable.
It (B) 1 ，B 2 ，B 3 ，B 4 ) Numerical sequence of (C) 1 ，C 2 ，C 3 ，C 4 ) Alignment is consistent, when c is obtained k The corresponding position sequence is the corresponding stability degree when the maximum value is the maximum value.
Table 2, wind damage resistance level control Table
| Degree of wind damage B i | Stable form B 1 | Metastable B 2 | Secondary instability B 3 | Unstable B 4 |
| Twist frequency ratio X 1 | ＞3.0 | 2.0～3.0 | 1.5～2.0 | 1.0～1.5 |
| Density ratio X 2 | ＞50 | 35～50 | 20～35 | ＜20 |
| Ratio of inertia radius X 3 | ＞0.5 | 0.4～0.5 | 0.3～0.4 | ＜0.3 |
| Form factor X 4 | ＞0.8 | 0.6～0.8 | 0.4～0.6 | ＜0.4 |
| Coefficient of attack angle X 5 | 0.90～1.0 | 0.75～0.90 | 0.55～0.75 | ＜0.55 |
| Girder width X 6 (m) | ＞30 | 20～30 | 10～20 | ＜10 |
| Vertical bending fundamental frequency X 7 (HZ) | ＞0.4 | 0.3～0.4 | 0.2～0.3 | ＜0.2 |
| Torsional fundamental frequency X 8 (HZ) | ＞1.6 | 0.8～1.6 | 0.4～0.8 | ＜0.4 |
| Flutter test wind speed X 9 (m/s) | ＜40 | 40～60 | 60～80 | ＜80 |
Specific examples are:
the twist frequency ratio x1=2.35; density ratio X2: =23.65; radius of inertia ratio X3: =0.59; a shape factor X4; =0.6; angle of attack coefficient x5=0.8; girder width x6=29:m fast-bending fundamental frequency x7= 0.2827zH; torsional fundamental frequency x8= 0.6647zH; wind speed X9 = 44.4m/s for main beam flutter test
Substituted into the above
Solving for a fuzzy evaluation vector c=v r= (0.228,0.407,0.324,0.029)
Therefore, the wind resistance stability degree of the bridge is the secondary stability type B2.
Step S5: and quantifying the anti-collision index.
The anti-collision index is quantified, and comprises two parts, namely a resistance H and an impact force P; and H is the resistance of the bridge pier or the upper structure force of the bridge, P is the positive impact force when the ship impacts the bridge pier, the impact force when the ship impacts the upper structure of the bridge, the impact force when the deck impacts the upper structure or the impact force when the mast impacts the lower structure, and modeling stress analysis is carried out.
Based on the ratio of bridge pier strength to ship collision force, calculating bridge collapse probability P C The calculation formula is as follows:
P f ＝N×P A ×P G ×P c
by further calculating the annual failure frequency P f The damage condition of the bridge pier is evaluated according to the formula of (1), wherein N is annual navigation quantity and P A ×P G Yaw probability and geometric probability, respectively.
Based on the obtained P f The bridge damage status is obtained in combination with table 3.
TABLE 3 comparative table of degree of crashworthiness and injury
Step S6: and quantifying the anti-scouring index.
Quantification of anti-scouring index, including measurement of full tide maximum water depth h by a sensor; average water resistance width B under full tide maximum water depth condition; average median diameter d of river bed sediment 50 The method comprises the steps of carrying out a first treatment on the surface of the u is the maximum flow rate of the full tide, and modeling stress analysis is carried out.
The partial scouring depth (including general scouring and partial scouring) h of the bridge pier under the action of tide b Is expressed by the following calculation formula:
h b ＝8.48k 1 k 2 B 0.326 u 0.628 h 0.193 d 50 0.167
wherein the full tide maximum water depth h; average water resistance width B under full tide maximum water depth condition; average median diameter d of river bed sediment 50 The method comprises the steps of carrying out a first treatment on the surface of the u is the maximum flow rate of the full tide; coefficient of basal plane layout k 1 Coefficient k of vertical arrangement of foundation piles 2 . Stripe type k 1 =1.0, quincunx k 1 =0.862; straight pile k 2 Inclined pile k=1.0 2 ＝1.176；
The ability to resist flushing is dimensionless processed and calculated using the following formula:
wherein D represents a scour damage state of the bridge, h b Represents the flushing depth, h k Representing the total length of pile length, bearing platform and pier.
The damage degree analysis was performed by combining the calculated D with Table 4.
TABLE 4 comparison of the degree of anti-scour damage
The failure probability is a possible failure probability calculated by P according to an empirical value in the scouring damage state D, and corresponding suggested measures are provided.
Step S7: the digital twin system analyzes the four scale indexes to finally obtain a comprehensive evaluation result; and analyzing and evaluating the damaged state of the bridge pier according to the modeling stress analysis result to obtain an evaluation index of the damaged state of the bridge pier, and repairing and perfecting the damaged key points according to the analysis and evaluation value.
And finally obtaining a comprehensive evaluation result:
T＝{A i ，B j ，C k ，D l }
wherein A is i Representing the degree of earthquake-resistant damage, i= {1,2.3,4,5}; b (B) j Representative ofWind damage resistance, j= {1,2.3,4}; c (C) k Represents the degree of crashworthiness, k= {1,2,3,4}; d (D) l Represents the extent of the scour damage, l= {1,2,3}.
For the wading bridge pier, the four scales of earthquake resistance, wind resistance, collision resistance and scour resistance are fused, the four scales comprise 16 small scale indexes, a multi-scale index evaluation system is established, and a comprehensive evaluation system for the toughness of the wading bridge pier is provided; and combining a digital twin technology to perform simulation modeling and real-time monitoring on the solid bridge pier, grasping the damage condition of the bridge pier by a system, and performing simulation and repair on the damage of the bridge pier.
After the bridge pier damage evaluation is obtained, the system performs corresponding finite element analysis calculation and adjustment aiming at the index with higher damage degree, and the system stabilizes the index by adjusting parameters, forms a visual model and is convenient for visual acquisition.
According to the multi-scale comprehensive evaluation method for the toughness of the wading pier, provided by the embodiment, the toughness evaluation of the pier is combined with four scales, the problems of single and incomplete evaluation indexes are solved, the toughness capability and damage degree of the pier can be comprehensively measured, the bridge is convenient to detect and maintain, and the gap of the multi-scale evaluation method for the toughness of the wading pier is filled.
Example two
The embodiment provides a wading pier toughness multi-scale comprehensive evaluation system, which specifically comprises:
an earthquake-resistant evaluation module configured to: obtaining the width of a crack of the bridge pier and the diameter of the bridge pier, calculating to obtain an earthquake-resistant damage value, and obtaining the earthquake-resistant damage degree based on the earthquake-resistant damage value;
an anti-wind evaluation module configured to: obtaining wind resistance indexes of the bridge pier, and calculating to obtain wind resistance damage degree;
a collision avoidance evaluation module configured to: the method comprises the steps of obtaining the resistance and the impact force of a bridge pier, calculating to obtain the collapse probability of the bridge pier, combining the annual navigation quantity, the yaw probability and the geometric probability of the bridge pier to obtain the annual failure frequency, and obtaining the anti-collision damage degree based on the annual failure frequency;
a scour evaluation module configured to: obtaining scour indexes of the bridge pier, calculating to obtain scour depth of the bridge pier, combining the pile length, the bearing platform and the total length of the bridge pier, calculating to obtain a scour damage state, and obtaining the scour damage degree based on the scour damage state;
a comprehensive evaluation module configured to: and combining the anti-seismic damage degree, the wind damage degree, the anti-collision damage degree and the anti-brushing damage degree to obtain a comprehensive evaluation result.
It should be noted that, each module in the embodiment corresponds to each step in the first embodiment one to one, and the implementation process is the same, which is not described here.
Example III
The present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps in a method for multi-scale comprehensive evaluation of toughness of a wading pier as described in the above embodiment.
Example IV
The embodiment provides a computer device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the steps in the multi-scale comprehensive evaluation method for toughness of the wading pier according to the embodiment.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random access Memory (Random AccessMemory, RAM), or the like.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A wading pier toughness multi-scale comprehensive evaluation method is characterized by comprising the following steps:
obtaining the width of a crack of the bridge pier and the diameter of the bridge pier, calculating to obtain an earthquake-resistant damage value, and obtaining the earthquake-resistant damage degree based on the earthquake-resistant damage value;
obtaining wind resistance indexes of the bridge pier, and calculating to obtain wind resistance damage degree;
the method comprises the steps of obtaining the resistance and the impact force of a bridge pier, calculating to obtain the collapse probability of the bridge pier, combining the annual navigation quantity, the yaw probability and the geometric probability of the bridge pier to obtain the annual failure frequency, and obtaining the anti-collision damage degree based on the annual failure frequency;
obtaining scour indexes of the bridge pier, calculating to obtain scour depth of the bridge pier, combining the pile length, the bearing platform and the total length of the bridge pier, calculating to obtain a scour damage state, and obtaining the scour damage degree based on the scour damage state;
and combining the anti-seismic damage degree, the wind damage degree, the anti-collision damage degree and the anti-brushing damage degree to obtain a comprehensive evaluation result.
2. The method for multi-scale comprehensive evaluation of toughness of a wading pier according to claim 1, wherein the earthquake-resistant damage value is a ratio of the width of a crack of the pier to the diameter of the pier.
3. The method for multi-scale comprehensive evaluation of toughness of a wading pier according to claim 1, wherein the wind resistance index comprises: the wind speed is tested by twisting frequency ratio, bridge deck mass and air density ratio, girder inertia radius ratio, girder section shape influence coefficient, attack angle effect coefficient, girder span, lowest order vertical bending self-vibration frequency, lowest order torsion self-vibration frequency and girder flutter.
4. The method for multi-scale comprehensive evaluation of toughness of a wading pier according to claim 1, wherein the bridge collapse probability is:
wherein H is the resistance of the bridge pier, and P is the impact force.
5. The method for multi-scale comprehensive evaluation of toughness of a wading pier according to claim 1, wherein the annual failure frequency is a product of collapse probability, annual navigation amount, yaw probability and geometric probability of the bridge.
6. The method for multi-scale comprehensive evaluation of toughness of a wading pier according to claim 1, wherein the anti-scour index comprises: maximum full tide depth, average water resistance width under the condition of maximum full tide depth, average median particle size of river bed sediment and maximum full tide flow rate.
7. The method for multi-scale comprehensive evaluation of toughness of a wading pier according to claim 1, wherein the scouring damage state is a ratio of a scouring depth of the pier to the total length.
8. A wading pier toughness multi-scale comprehensive evaluation system is characterized by comprising:
an earthquake-resistant evaluation module configured to: obtaining the width of a crack of the bridge pier and the diameter of the bridge pier, calculating to obtain an earthquake-resistant damage value, and obtaining the earthquake-resistant damage degree based on the earthquake-resistant damage value;
an anti-wind evaluation module configured to: obtaining wind resistance indexes of the bridge pier, and calculating to obtain wind resistance damage degree;
a collision avoidance evaluation module configured to: the method comprises the steps of obtaining the resistance and the impact force of a bridge pier, calculating to obtain the collapse probability of the bridge pier, combining the annual navigation quantity, the yaw probability and the geometric probability of the bridge pier to obtain the annual failure frequency, and obtaining the anti-collision damage degree based on the annual failure frequency;
a scour evaluation module configured to: obtaining scour indexes of the bridge pier, calculating to obtain scour depth of the bridge pier, combining the pile length, the bearing platform and the total length of the bridge pier, calculating to obtain a scour damage state, and obtaining the scour damage degree based on the scour damage state;
a comprehensive evaluation module configured to: and combining the anti-seismic damage degree, the wind damage degree, the anti-collision damage degree and the anti-brushing damage degree to obtain a comprehensive evaluation result.
9. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when executed by a processor, implements the steps of a method for multi-scale integrated assessment of toughness of a wading pier according to any one of claims 1-7.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the steps of a method for multi-scale integrated assessment of the toughness of a wading pier according to any one of claims 1-7 when the program is executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211696175.1A CN116663793A (en) | 2022-12-28 | 2022-12-28 | Multi-scale comprehensive evaluation method and system for toughness of wading pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211696175.1A CN116663793A (en) | 2022-12-28 | 2022-12-28 | Multi-scale comprehensive evaluation method and system for toughness of wading pier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116663793A true CN116663793A (en) | 2023-08-29 |
Family
ID=87714160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211696175.1A Pending CN116663793A (en) | 2022-12-28 | 2022-12-28 | Multi-scale comprehensive evaluation method and system for toughness of wading pier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116663793A (en) |
-
2022
- 2022-12-28 CN CN202211696175.1A patent/CN116663793A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mojtahedi et al. | Developing a robust SHM method for offshore jacket platform using model updating and fuzzy logic system | |
| CN107025357A (en) | Vessel bump bridge pile foundation damnification recognition method based on SVMs | |
| CN103884776B (en) | A kind of method improving random damage Locating Vector Methods monitoring result accuracy | |
| CN105718658A (en) | Large-size bridge online evaluating system | |
| CN109558621B (en) | Structural damage identification method and system | |
| Wu et al. | Stabilization diagrams to distinguish physical modes and spurious modes for structural parameter identification | |
| CN102759573A (en) | Frequency change-based structure damage positioning and damage degree evaluating method | |
| CN104133960A (en) | Improved optimal arranging method of static sensors | |
| CN106257541A (en) | A kind of modification method of bridge finite element model | |
| CN105975702B (en) | Cable-stayed bridge health monitoring sensors optimum placement method and system | |
| CN114048670B (en) | Intelligent algorithm for rapidly evaluating damage of regional concrete bridge after earthquake | |
| CN110008520B (en) | Structural damage identification method based on displacement response covariance parameters and Bayesian fusion | |
| CN113704859A (en) | Concrete bridge flood vulnerability analysis method considering bridge pier failure mode | |
| CN113435021A (en) | Model test method for dynamic similarity of scale simulation tension of extension mooring line | |
| CN106709199B (en) | Antidetonation Robust Method based on relative storey displacement | |
| CN111395144B (en) | Method for monitoring and judging health state of large-span continuous rigid frame bridge | |
| CN116663793A (en) | Multi-scale comprehensive evaluation method and system for toughness of wading pier | |
| Liu et al. | Structural mechanical properties of circular fish cages determined by finite element analysis and material test | |
| CN116070105A (en) | Combined beam damage identification method and system based on wavelet transformation and residual error network | |
| CN115455791B (en) | Method for improving landslide displacement prediction accuracy based on numerical simulation technology | |
| CN115577415A (en) | Damage assessment method for ship impacting reinforced concrete structure | |
| CN115564264A (en) | Safety risk assessment method for dam break destructiveness of tailing pond | |
| CN114169106A (en) | Method for evaluating lateral displacement caused by jet grouting pile based on improved random forest model | |
| Wei et al. | Life-cycle thinking-based decision support framework for multispan simply supported bridges under typhoon-induced wave, current and surge conditions | |
| Li et al. | Comparative seismic performance of dams in Canada and China using numerical analysis and shake table testing |
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 |