CN108643115A - A kind of evaluation method for groynes technology status - Google Patents
A kind of evaluation method for groynes technology status Download PDFInfo
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- CN108643115A CN108643115A CN201810275875.0A CN201810275875A CN108643115A CN 108643115 A CN108643115 A CN 108643115A CN 201810275875 A CN201810275875 A CN 201810275875A CN 108643115 A CN108643115 A CN 108643115A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 82
- 238000011156 evaluation Methods 0.000 title claims abstract description 49
- 230000006378 damage Effects 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000013139 quantization Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000008439 repair process Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 3
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- 230000001771 impaired effect Effects 0.000 description 1
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- 239000011435 rock Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
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Abstract
The present invention discloses a kind of evaluation method for groynes technology status, includes the following steps successively：By aerial survey result, based on the groynes technology status index acquired, scalar quantization evaluation is carried out on integrally-built influence Reflection according to damaged condition Damage, damage range Extent and damage, D values, E values and R values are assessed with four grades, this four grades are indicated with 14 successively, and evaluation result is finally recorded in evaluation record sheet.Quantitative evaluation is carried out to groynes technology status on the basis of the regular aerial survey of groynes checks, the subjectivity of inspection personnel is reduced, is conducive to the generalization of evaluation result information, evaluation result is more rationalized；Required technology status index need to be only detected, the work that cruise checks is simplified；Description can be simplified for the good groynes of technology status, reduce and simplify the input quantity of data, reduction techniques status report；It can be additionally used in the evaluation of groynes technology status.
Description
Technical field
The invention belongs to waterway regulation building assessment techniques, and in particular to a kind of evaluation side for groynes technology status
Method.
Background technology
Groynes is passed through because being influenced by factors such as water flow mud-sand power, environment, material, structure, mankind's activity and maintenance managements
Often there is damage by water phenomenon, wherein coupling caused by water flow mud-sand kinetic factor is particularly bright to the destruction of regulating structure
It is aobvious.Therefore, it is necessary to evaluate groynes technology status, the current state of groynes is grasped, the groynes of damage is safeguarded in time, makes it
Continue to play its function.
Currently, often using foundation for groynes technology state evaluating《Changjiang River Trunk Line waterway regulation building maintenance management
Method》(in May, 2013),《Channel maintenance work regulation》(in January, 2010),《Changjiang River Trunk Line waterway regulation building is tieed up
Protect technical stipulation》(2 months 2014) are assessed the technology condition shape of groynes, it is determined whether safeguarded.By the technology of groynes
Situation is divided into following four class：
(1) technology status is good, and Function is normally one kind；
(2) building has a small amount of deformation, but it is two classes not influence building stability and regulation function performance；
(3) building damage is more apparent, can still play regulation function, but it is three classes to need to repair in time；
(4) building damage is serious or has obvious shortcoming, and or will to lose regulation function be four classes；
Research carries out analog study by mathematical model and physical experiments both at home and abroad, to the damaged or destroyed by flood mechanism and water of groynes
The problems such as flowing the characteristics of motion is studied, and obtains certain achievement.Water flow mud-sand destruction is resisted by analyzing groynes
Principal element joins the security and stability of scale-model investigation groynes by Fuzzy Synthetic Evaluation Model, grey.But it is difficult to keep away in studying
Exempt from problems with.
First, most of research mainly carries out analog study by physical model, and there are certain differences with true navigation channel
The opposite sex, the result smaller scope of application of acquisition；Second, calculating process is complex cumbersome, it is difficult to Fast Evaluation groynes technology shape
Condition.A large amount of debugging routine is needed, its damaged or destroyed by flood process is analyzed.Third, shorter mention to quantitative analysis.The technology of industry at present
Specification does not have specific index and assessment method, domestic and foreign scholars seldom to be examined by quantifying the condition state of groynes
Consider groynes condition state, there is stronger subjectivity, influence evaluation result.Above-mentioned some shortcomings affect groynes skill
The evaluation of art situation.
In general, for the scour principle of groynes, the probing into of local scouring depth calculation formula, neighbouring flow field analysis etc.
Aspect has extensive research, primarily focuses on the research of groynes itself scour law, and washes away situation pair for how to evaluate
Groynes stability is then related to less.
Invention content
Goal of the invention：It is an object of the invention to solve the deficiencies in the prior art, one kind is provided for groynes skill
The evaluation method of art situation, the present invention combine current existing theoretical research foundation, propose improved DER methods and corresponding technology
Index, to evaluate groynes technology status.
Technical solution：A kind of evaluation method for groynes technology status of the present invention, includes the following steps successively：
By aerial survey as a result, based on the groynes technology status index acquired, according to damaged condition Damage, damage range Extent and
Damage carries out scalar quantization evaluation to integrally-built influence Reflection, and D values, E values and R are assessed with four grades
Value, this four grades are indicated with 1-4 successively, and evaluation result is finally recorded in evaluation record sheet；
Wherein, the groynes technology status includes：The topography variation in riverbed near the structure attribute and groynes of groynes；It is described
Groynes technology status index includes：The damaged or destroyed by flood of the damaged or destroyed by flood length, abutment of the damaged or destroyed by flood area of dam facing, the damaged or destroyed by flood area of slope surface, dam root
The depth of area and scour hole and whether within the scope of river bottom protection situation.
Further, four grade evaluation criterions of the D values, E values and R values are as follows：
D value value standards
E value value standards
The limiting scour formula of scour hole is as follows in specification：
K2=e-0.2m
Wherein：vmaxIt is the approach velocity of flow before groynes head, LDThat groynes blocks water length (m), B be from natural watercourse to
The width (m) of embankment, V are the natural flow velocitys (m/s) of water channel, and g is acceleration of gravity, K1It is to block water the related system of length with groynes
Number LD, K2It is coefficient related with groynes slope coefficient m, m is groynes slope coefficient, △ hpIt is maximum depth of scour pit, α is water
Axis and the groynes axis angle of cut are flowed, d is riverbed sand grains grain size；
R values refer to influence of the practical damage situation to groynes overall stability, and different damage ranges and degree are to its shadow
Difference is rung, as D, E change, calculation formula is as follows：
In formula：R refers to R values obtained by certain assessment item is calculated in damage, and Di refers to certain assessment item D values, and Ei is
Refer to certain assessment item E values；F is influence property coefficient of the assessment item to groynes stability, be see the table below：
Assessment item is to groynes stability influence property coefficient (F)
Scalar quantization evaluation is carried out to the D values, E values and R values of aforementioned four grade, specific method is：
(1) monotechnics status index
If in order without damage scoring full marks 100, the assessed value ruined with evaluation section bit loss (D, E, R) calculates commenting for damage
Divide, then the scoring for subtracting damage with 100, the remainder of gained is to evaluate position status index value：
Wherein, ICiFor certain evaluation status index score, F is assessment item to groynes stability influence property coefficient, and R is not
The value of the corresponding R values of same D, E value, i is (1,2,3,4,5), and 1 is dam facing, and 2 be slope surface, and 3 be dam root, and 4 be abutment, and 5 be punching
Brush hole；
(2) whole groynes status index
Whole groynes status index is calculated the weighted comprehensive of each technology status index；Different technologies status index
It is different for the importance of groynes, therefore when the integral status index of calculating groynes, cope with different groynes technology status indexs
Based on different weights；
Wherein, CI is regulating structure integral status index, ICiFor each technology status index, WiFor each technology status
Weight of index significance, and dam facing, slope surface=0.075, abutment=0.39, dam root=0.21, scour hole=0.25；Due to difference
Assessment technique status index is different for the globality influence of entire groynes, so invention provides for each evaluation indexes
Weighted value immobilizes.
Then, according to the IC values and CI values for calculating gained, the technology status of each technology status index and entirety is commented
Valence is divided into four classes
(1) when IC or CI values are respectively [90,100], technology status is well one kind；
(2) when IC or CI values are respectively [80,89], there is a small amount of damage in groynes a part, to its technology status and knot
It is two classes that structure stability, which has smaller influence,；
(3) when IC or CI values are respectively [60,79], there is obvious damage in groynes a part, to its technology status and knot
Structure stability is influenced, and it is three classes that need to repair in time；
(4) when IC or CI values are respectively [0,59], there is larger damage in groynes a part, seriously affects regulation function and knot
Structure stability is four classes.
Advantageous effect：Groynes technology state evaluating method provided by the invention, the advantage is that：
(1) quantitative evaluation is carried out to groynes technology status on the basis of groynes periodically cruises inspection, reduces scrutineer
The subjectivity of member, is conducive to the generalization of evaluation result information, evaluation result is more rationalized.
(2) present invention need to only detect required technology status index, simplify the work that cruise checks.
(3) present invention can simplify description for the good groynes of technology status, reduce and simplify the input quantity of data, simplify
Technology status is reported；It can be additionally used in the evaluation of groynes technology status.
Description of the drawings
Fig. 1 is that scour around spur-dike cheats schematic diagram in embodiment 1；1 indicates scour hole in figure, and 2 indicate deepest point position, and 3 indicate
River bottom protection range, 4 indicate groynes.
Fig. 2 is groynes outside drawing in embodiment 1；5 indicate that dam facing is complete in figure, D=1, E=1；6 indicate entire dam root area
Domain is connected well, D=1, E=1.
Schematic diagram when Fig. 3 is dam facing block rock glacier mistake in table 2, husky pillow exposure, and D=3.
Schematic diagram when Fig. 4 washes out apparent for dam root in table 2, and D=4.
Schematic diagrames of the Fig. 5 for slope surface in table 2 when intact, and D=1.
Fig. 6 occurs schematic diagram when zonule block lycopod moves, and D=2 for slope surface in table 2.
Schematic diagram when Fig. 7 collapses for abutment in table 2, and D=4.
Specific implementation mode
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation
Example.
A kind of evaluation method for groynes technology status of the present invention, includes the following steps successively：By aerial survey knot
Fruit, based on the groynes technology status index acquired, according to damaged condition Damage, damage range Extent and damage to whole
The influence Reflection of body structure carries out scalar quantization evaluation, assesses D values, E values and R values with four grades, this four
A grade is indicated with 1-4 successively, and evaluation result is finally recorded in evaluation record sheet；
Wherein, the groynes technology status includes：Groynes structure attribute (predominantly groynes appearance and size, including dam facing,
Slope surface, abutment, dam root) and the neighbouring riverbed of groynes topography variation (predominantly scour hole variation)；The groynes technology status refers to
Mark includes：The damaged or destroyed by flood area and scour hole of the damaged or destroyed by flood area of dam facing, the damaged or destroyed by flood area of slope surface, the damaged or destroyed by flood length of dam root, abutment
Depth and whether within the scope of river bottom protection situation.
Above-mentioned evaluation record sheet is as shown in table 1,
Certain the groynes technology state evaluating record sheet of table 1
Four grade evaluation criterions of above-mentioned D values, E values and R values are as follows：
2 D value value standards of table
Damaged or destroyed by flood situation is with reference to figure 3-7.
3 E value value standards of table
The limiting scour formula of scour hole is as follows in specification：
K2=e-0.2m
Wherein：vmaxIt is the approach velocity of flow before groynes head.LDThat groynes blocks water length (m), B be from natural watercourse to
The width (m) of embankment, V are the natural flow velocitys (m/s) of water channel, and g is acceleration of gravity, K1It is to block water the related system of length with groynes
Number LD, K2It is coefficient related with groynes slope coefficient m, m is groynes slope coefficient, △ hpIt is maximum depth of scour pit, α is water
Axis and the groynes axis angle of cut are flowed, d is riverbed sand grains grain size.
R values refer to influence of the practical damage situation to groynes overall stability, and different damage ranges and degree are to its shadow
Difference is rung, as D, E change, calculation formula is as follows：
In formula：R refers to R values obtained by certain assessment item is calculated in damage, and Di refers to certain assessment item D values, and Ei is
Refer to certain assessment item E values；F is influence property coefficient of the assessment item to groynes stability, be see the table below.
4 assessment item of table is to groynes stability influence property coefficient (F)
Scalar quantization evaluation is carried out to the D values, E values and R values of aforementioned four grade, specific method is：
(1) monotechnics status index
If in order without damage scoring full marks 100, the assessed value ruined with evaluation section bit loss (D, E, R) calculates commenting for damage
Divide, then the scoring for subtracting damage with 100, the remainder of gained is to evaluate position status index value：
Wherein, ICiFor certain evaluation status index score, F is assessment item to groynes stability influence property coefficient, and R is not
The corresponding R values of same D, E value, reference table 4；The value of i is (1,2,3,4,5), and 1 is dam facing, and 2 be slope surface, and 3 be dam root, and 4 be dam
Head, 5 be scour hole；
(2) whole groynes status index
Whole groynes status index is calculated the weighted comprehensive of each technology status index；Different technologies status index
It is different for the importance of groynes, therefore when the integral status index of calculating groynes, cope with different groynes technology status indexs
Based on different weights；
Wherein, CI is regulating structure integral status index, ICiFor each technology status index, WiFor each technology status
Weight of index significance, and dam facing, slope surface=0.075, abutment=0.39, dam root=0.21, scour hole=0.25.
Then, according to the IC values and CI values for calculating gained, the technology status of each technology status index and entirety is commented
Valence is divided into four classes, as shown in table 5.
(1) when IC or CI values are respectively [90,100], technology status is well one kind；
(2) when IC or CI values are respectively [80,89], there is a small amount of damage in groynes a part, to its technology status and knot
It is two classes that structure stability, which has smaller influence,；
(3) when IC or CI values are respectively [60,79], there is obvious damage in groynes a part, to its technology status and knot
Structure stability is influenced, and it is three classes that need to repair in time；
(4) when IC or CI values are respectively [0,59], there is larger damage in groynes a part, seriously affects regulation function and knot
Structure stability is four classes.
5 each position of table and overall merit condition criteria
Embodiment 1：
As shown in Fig. 2, by the evaluation method for groynes technology status of the present embodiment for A in 2010 on a certain navigation channel
The technology state evaluating of groynes.Evaluation content is as follows：
(1) dam facing：The position of lowest elevation and elevation in dam body and eave tile section are acquired, is become compared with elevation when being completed
Change little, elevation is generally in 6m or more, therefore D=1, E=1, can be calculated R=0.(R value result of calculations reference table 6)
(2) slope surface：According to technology appraisal reports in 2010 and acquisition slope surface fluoran stream surface and lee side technology status, slope surface
Not larger damage, therefore D=1, E=1, can be calculated R=0.(R value result of calculations reference table 6)
(3) dam root：According to the data of acquisition, dam root in 2010 is without damage length, impaired area and notch, therefore D=1, E
=1, it can be calculated R=0.(R value result of calculations reference table 6).
(4) abutment：According to gathered data, abutment is without collapsing, therefore D=1, E=1, R=0.(R value result of calculation reference tables
6)
(5) scour hole：According to gathered data, groynes downstream has a scour hole, scour depth to be up to 3.7m, and by upper
It is 7.74m (V=1.3m/s, L to state calculation formula and specification limiting scour can be calculatedD=462m, B=1896m, m=1:
2, α=74 °, d=0.2mm) for scour hole major part other than river bottom protection range, scour depth is smaller within the scope of river bottom protection, has no effect on
Groynes stability, therefore D=3, E=2, R=1.000, as shown in Figure 1.
6 R value value standards of table
D, E, R value of each assessment item as the above analysis, can be according to formula
The IC values of each assessment item are calculated, weighted calculation obtains comprehensive evaluation index CI, as shown in table 6, evaluates regulating structure
Technology status.
By 7 result of calculation of table it is found that A groynes dam facing, slope surface, abutment in 2010 are substantially intact, dam root linking is good, abutment
There is apparent scour hole with dam root, but do not influence structural intergrity, dam facing, slope surface, dam root, abutment technology status index are one
Class, scour hole technology status index are two classes, and overall technology situation is one kind.
7 2010 years A groynes technology state evaluating results of table
It can be seen from above-described embodiment that having studied damaged condition, damage range and damage in the present invention to groynes
Integrally-built influence.Wherein, groynes technology status includes to change in bed level near abutment, dam root, slope surface, dam facing and groynes
The attribute change of variation.The present invention can simplify the input of data, ordinary circumstance need not incite somebody to action by carrying out subitem assessment to groynes
Details are input in data bank, the report of technology state evaluating are more simplified, and establish objective appraisal standard
With simple and clear assessment table, the purpose of quantitative evaluation can reach.Meanwhile the present invention is not only directed to the serious journey of groynes damaged or destroyed by flood
Degree is assessed with damaged or destroyed by flood range, while also the influence to damaged or destroyed by flood situation to groynes importance is assessed, and regulation is built
The maintenance of object has higher reference significance.
Claims (4)
1. a kind of evaluation method for groynes technology status, it is characterised in that：Include the following steps successively：By aerial survey as a result,
Based on the groynes technology status index acquired, according to damaged condition Damage, damage range Extent and damage to entirety
The influence Reflection of structure carries out scalar quantization evaluation, and D values, E values and R values are assessed with four grades, this four
Grade is indicated with 1-4 successively, and evaluation result is finally recorded in evaluation record sheet；
Wherein, the groynes technology status includes：The topography variation in riverbed near the structure attribute and groynes of groynes；The groynes
Technology status index includes：The damaged or destroyed by flood area of the damaged or destroyed by flood area of dam facing, the damaged or destroyed by flood area of slope surface, the damaged or destroyed by flood length of dam root, abutment
And scour hole depth and whether within the scope of river bottom protection situation.
2. the evaluation method according to claim 1 for groynes technology status, it is characterised in that：The D values, E values with
And four grade evaluation criterions of R values are as follows：
D value value standards
E value value standards
The limiting scour formula of scour hole is as follows in specification：
K2=e-0.2m
Wherein：vmaxIt is the approach velocity of flow before groynes head, LDIt is that groynes blocks water length (m), B is from natural watercourse to embankment
Width (m), V are the natural flow velocitys (m/s) of water channel, and g is acceleration of gravity, K1It is to block water the related coefficient L of length with groynesD, K2
It is coefficient related with groynes slope coefficient m, m is groynes slope coefficient, △ hpIt is maximum depth of scour pit, α is flow axis
With the groynes axis angle of cut, d is riverbed sand grains grain size；
R values refer to influence of the practical damage situation to groynes overall stability, and different damage ranges and degree influence not it
Together, as D, E change, calculation formula is as follows：
In formula：R refers to R values obtained by certain assessment item is calculated in damage, and Di refers to certain assessment item D values, and Ei refers to certain
Assessment item E values；F is influence property coefficient of the assessment item to groynes stability, be see the table below：
Assessment item is to groynes stability influence property coefficient (F)
3. the evaluation method according to claim 2 for groynes technology status, it is characterised in that：To the D of four grades
Value, E values and R values carry out scalar quantization evaluation, and specific method is：
(1) monotechnics status index
If in order without damage scoring full marks 100, the assessed value ruined with evaluation section bit loss (D, E, R) calculates the scoring of damage,
The scoring for subtracting damage again with 100, the remainder of gained are to evaluate position status index value：
Wherein, ICiFor certain evaluation status index score, F is assessment item to groynes stability influence property coefficient, and R is different D, E
It is worth corresponding R values, i indicates some assessment technique status index, and the value of i is (1,2,3,4,5), and 1 is dam facing, and 2 be slope
Face, 3 be dam root, and 4 be abutment, and 5 be scour hole；
(2) whole groynes status index
Whole groynes status index is calculated the weighted comprehensive of each technology status index；Different technologies status index for
The importance of groynes is different, therefore when the integral status index of calculating groynes, it copes with different groynes technology status indexs and is based on
Different weights；
Wherein, CI is regulating structure integral status index, ICiFor each technology status index, WiFor each technology status index
Weights of importance, and dam facing, slope surface=0.075, abutment=0.39, dam root=0.21, scour hole=0.25.
4. the evaluation method according to claim 3 for groynes technology status, it is characterised in that：Obtained by calculating
IC values and CI values are divided into four classes to the technology state evaluating of each technology status index and entirety
(1) when IC or CI values are respectively [90,100], technology status is well one kind；
(2) when IC or CI values are respectively [80,89], there is a small amount of damage in groynes a part, steady to its technology status and structure
It is qualitative that have smaller influence be two classes；
(3) when IC or CI values are respectively [60,79], there is obvious damage in groynes a part, steady to its technology status and structure
Qualitative to be influenced, it is three classes that need to repair in time；
(4) when IC or CI values are respectively [0,59], there is larger damage in groynes a part, seriously affects regulation function and structure is steady
It is qualitatively four classes.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109685354A (en) * | 2018-12-18 | 2019-04-26 | 中国地质科学院探矿工艺研究所 | Debris flow sand blocking dam defect classification evaluation system based on mobile terminal and computer |
| CN110059870A (en) * | 2019-04-04 | 2019-07-26 | 长江航道规划设计研究院 | Waterway regulation building maintenance analysis method based on BIM and GIS |
| CN112651139A (en) * | 2021-01-05 | 2021-04-13 | 黄河勘测规划设计研究院有限公司 | Reservoir dam technical condition evaluation method |
| CN114091946A (en) * | 2021-11-29 | 2022-02-25 | 重庆交通大学 | Method and device for evaluating service states of spur dike and tailgating |
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| CN112651139B (en) * | 2021-01-05 | 2024-04-02 | 黄河勘测规划设计研究院有限公司 | Reservoir dam technical condition assessment method |
| CN114091946A (en) * | 2021-11-29 | 2022-02-25 | 重庆交通大学 | Method and device for evaluating service states of spur dike and tailgating |
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