CN105975722B - Separate the unloading effect evaluation method of pile-supported platform in discharging type sheet-pile wharf - Google Patents
Separate the unloading effect evaluation method of pile-supported platform in discharging type sheet-pile wharf Download PDFInfo
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- 238000007599 discharging Methods 0.000 title claims abstract description 23
- 238000011156 evaluation Methods 0.000 title claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000005452 bending Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 10
- 238000005457 optimization Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 6
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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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
- E02B3/068—Landing stages for vessels
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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Abstract
The invention discloses a kind of unloading effect evaluation methods of pile-supported platform in separation discharging type sheet-pile wharf, establish the first numerical analysis model, calculate front wall moment of flexure, cushion cap stake moment of flexure, cushion cap stake top axle power and cushion cap stake horizontal displacement；Second value analysis model is established, front wall moment of flexure, front wall horizontal displacement, cushion cap stake moment of flexure, cushion cap stake top axle power and cushion cap stake horizontal displacement are calculated；Third value analysis model is established, front wall moment of flexure and front wall horizontal displacement are calculated；Evaluate the vertical Unloading Effect of pile-supported platform；Evaluate the horizontal direction Unloading Effect of pile-supported platform；Evaluate the space Unloading Effect of pile-supported platform.The present invention solve at present separation discharging type sheet-pile wharf unloading effect it is indefinite, can not quantitative measurement deficiency, for the optimization design for separating discharging type sheet-pile wharf, the especially design of pile-supported platform unloading effect and optimization, measurement index and reference frame are provided, provides technical support to separate the popularization and application of discharging type sheet-pile wharf.
Description
Technical field
The present invention relates to a kind of evaluation methods, and in particular to a kind of off-load for separating pile-supported platform in discharging type sheet-pile wharf
Effect evaluation method.
Background technique
There are mainly three types of forms in the dock structure of port engineering: gravity type quay, long piled wharf and sheet-pile wharf.According to
The harbour of engineering specifications and design feature, all kinds of patterns has relatively broad application in China.Sheet-pile wharf has construction speed
The features such as degree is fast, short time limit, cost save, according to incompletely statistics, has built nearly 300 of sheet-pile wharf berth, but its since the establishment of the nation
In 85% or more be all middle-size and small-size harbour.Compared with gravity type quay and long piled wharf develop, domestic sheet-pile wharf is to large size
Change and the development of deep water obviously lags.In order to adapt to Wharf Construction to deep water, enlargement development, novel separation discharging type plate
Stake harbour is suggested and is more and more applied in newly-built large-tonnage harbour and the transformation of existing sheet-pile wharf deep waterization.But at present
Load transfer mechanism and bearer properties about this new construction is also indefinite, and theoretical research lags far behind engineering practice,
Although being included into professional standard, currently without complete reliable theoretical design method, this is also limited to a certain extent
Its popularization and application is made.Before the invention patent, current design and application depend on centrifugal model test and design
Experience, especially with regard to pile-supported platform off-load mechanism quantitative assessment still without clearly feasible method, also not yet establish unload
Lotus measure of effectiveness index, this makes design optimization lack specific target.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides pile-supported platforms in a kind of separation discharging type sheet-pile wharf to unload
Lotus effect evaluation method.
In order to achieve the above object, the technical scheme adopted by the invention is that:
The unloading effect evaluation method for separating pile-supported platform in discharging type sheet-pile wharf, includes the following steps,
Step 1, according to separation discharging type sheet-pile wharf data to be assessed, the first numerical analysis model is established, that is, is separated
The numerical analysis model of discharging type sheet-pile wharf model calculates front wall moment of flexure, cushion cap stake moment of flexure, cushion cap stake top axle power and cushion cap
Stake horizontal displacement；
Step 2, pile-supported platform is removed on the basis of the first numerical analysis model, establishes second value analysis model, counted
Calculate front wall moment of flexure, front wall horizontal displacement, cushion cap stake moment of flexure, cushion cap stake top axle power and cushion cap stake horizontal displacement；
Step 3, cushion cap stake is gone on the basis of second value analysis model, third value analysis model is established, before calculating
Wall moment of flexure and front wall horizontal displacement；
Step 4, by comparing the calculated result of the first numerical analysis model and second value analysis model, evaluation pile is flat
The vertical Unloading Effect of platform；
By comparing the calculated result of second value analysis model and third value analysis model, the water of pile-supported platform is evaluated
It puts down to Unloading Effect；
By comparing the calculating knot of the first numerical analysis model, second value analysis model and third value analysis model
Fruit evaluates the space Unloading Effect of pile-supported platform, i.e., the comprehensive superposition Unloading Effect of vertical and horizontal direction.
Pass through the cushion cap stake top axle power in the first numerical analysis model of comparison and second value analysis model calculated result
The vertical Unloading Effect of pile-supported platform is evaluated with the variation degree of maximum horizontal displacement.
Vertical Unloading Effect degree includes significant, common and unknown shows；
Specific judgement schematics are as follows:
Wherein, Np,1And Np,2Cushion cap in respectively the first numerical analysis model and second value analysis model calculated result
Stake top axle power, Dhp,1And Dhp,2Cushion cap in respectively the first numerical analysis model and second value analysis model calculated result
Stake maximum horizontal displacement.
By comparison second value analysis model and third value analysis model calculated result in front wall maximal bending moment and
The variation degree of maximum horizontal displacement evaluates the horizontal direction Unloading Effect of pile-supported platform.
Horizontal direction Unloading Effect degree includes significant, common and unknown shows；
Specific judgement schematics are as follows:
Wherein, Mw,2And Mw,3Front wall respectively in second value analysis model and third value analysis model calculated result
Maximal bending moment, Dhw,2And Dhw,3Front wall respectively in second value analysis model and third value analysis model calculated result is most
Big horizontal displacement.
Pass through the front wall maximal bending moment in the first numerical analysis model of comparison and third value analysis model calculated result
Variation degree compares the change of the first numerical analysis model and the cushion cap stake maximal bending moment in second value analysis model calculated result
Change degree evaluates the space Unloading Effect of pile-supported platform.
Space Unloading Effect degree includes significant, common and unknown shows；
Specific judgement schematics are as follows:
Wherein, Mw,1And Mw,3Front wall in respectively the first numerical analysis model and third value analysis model calculated result
Maximal bending moment, Mp,1And Mp,2Cushion cap stake in respectively the first numerical analysis model and second value analysis model calculated result is most
Big moment of flexure.
Advantageous effects of the invention: the present invention solve at present separation discharging type sheet-pile wharf unloading effect it is unknown
Really, can not quantitative measurement deficiency, for the optimization design for separating discharging type sheet-pile wharf, especially pile-supported platform unloading effect set
Meter and optimization, provide measurement index and reference frame, provide technology branch to separate the popularization and application of discharging type sheet-pile wharf
It holds.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Fig. 2 is the schematic diagram of the first numerical analysis model.
Fig. 3 is the schematic diagram of second value analysis model.
Fig. 4 is the schematic diagram of third value analysis model.
Fig. 5 is the front wall moment of flexure comparison diagram of different models.
Fig. 6 is the front wall horizontal displacement comparison diagram of different models.
Fig. 7 is different model cushion cap stake top axle power comparison diagrams.
Fig. 8 is different model cushion cap stake horizontal displacement comparison diagrams.
Fig. 9 is different model cushion cap stake moment of flexure comparison diagrams.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, separating the unloading effect evaluation method of pile-supported platform in discharging type sheet-pile wharf, including following step
It is rapid:
Step 1, according to separation discharging type sheet-pile wharf data to be assessed, the first numerical analysis model is established, that is, is separated
The numerical analysis model of discharging type sheet-pile wharf model, schematic diagram is as shown in Fig. 2, calculate front wall moment of flexure, cushion cap stake moment of flexure, cushion cap
Stake top axle power and cushion cap stake horizontal displacement.
Step 2, pile-supported platform is removed on the basis of the first numerical analysis model, establishes second value analysis model, shows
It is intended to as shown in figure 3, calculating front wall moment of flexure, front wall horizontal displacement, cushion cap stake moment of flexure, cushion cap stake top axle power and cushion cap stake level
Displacement.
Step 3, cushion cap stake is gone on the basis of second value analysis model, establishes third value analysis model, schematic diagram
As shown in Fig. 4, front wall moment of flexure and front wall horizontal displacement are calculated.
Above three numerical analysis model can be using in the method for numerical simulation such as finite element, finite difference, discrete element
One kind needs in numerical analysis model comprising structures such as front wall, pile-supported platform, cushion cap stake and anchorage walls, at the same need include
Foundation soil body, and foundation soil body cannot be to simplify the replacement of the components such as spring.
Step 4, by comparing the calculated result of the first numerical analysis model and second value analysis model, evaluation pile is flat
The vertical Unloading Effect of platform；By comparing the calculated result of second value analysis model and third value analysis model, stake is evaluated
Peaceful horizontal direction Unloading Effect；By comparing the first numerical analysis model, second value analysis model and third value point
The calculated result for analysing model, evaluates the space Unloading Effect of pile-supported platform, i.e., the comprehensive superposition Unloading Effect of vertical and horizontal direction.
As shown in figs. 5 and 9, axle power is as shown in fig. 7, horizontal position for moment of flexure in above three numerical analysis model calculated result
It moves as seen in figs. 6 and 8.
Pass through the cushion cap stake top axle power in the first numerical analysis model of comparison and second value analysis model calculated result
The vertical Unloading Effect of pile-supported platform is evaluated with the variation degree of maximum horizontal displacement.
Vertical Unloading Effect degree includes significant, common and unknown shows.
Specific judgement schematics are as follows:
Wherein, Np,1And Np,2Cushion cap in respectively the first numerical analysis model and second value analysis model calculated result
Stake top axle power, Dhp,1And Dhp,2Cushion cap in respectively the first numerical analysis model and second value analysis model calculated result
Stake maximum horizontal displacement.
By comparison second value analysis model and third value analysis model calculated result in front wall maximal bending moment and
The variation degree of maximum horizontal displacement evaluates the horizontal direction Unloading Effect of pile-supported platform.
Horizontal direction Unloading Effect degree includes significant, common and unknown shows.
Specific judgement schematics are as follows:
Wherein, Mw,2And Mw,3Front wall respectively in second value analysis model and third value analysis model calculated result
Maximal bending moment, Dhw,2And Dhw,3Front wall respectively in second value analysis model and third value analysis model calculated result is most
Big horizontal displacement.
Pass through the front wall maximal bending moment in the first numerical analysis model of comparison and third value analysis model calculated result
Variation degree compares the change of the first numerical analysis model and the cushion cap stake maximal bending moment in second value analysis model calculated result
Change degree evaluates the space Unloading Effect of pile-supported platform.
Space Unloading Effect degree includes significant, common and unknown shows.
Specific judgement schematics are as follows:
Wherein, Mw,1And Mw,3Front wall in respectively the first numerical analysis model and third value analysis model calculated result
Maximal bending moment, Mp,1And Mp,2Cushion cap stake in respectively the first numerical analysis model and second value analysis model calculated result is most
Big moment of flexure.
The above method solve at present separation discharging type sheet-pile wharf unloading effect it is indefinite, can not quantitative measurement not
Foot provides measurement for the optimization design for separating discharging type sheet-pile wharf, the especially design of pile-supported platform unloading effect and optimization
Index and reference frame provide technical support to separate the popularization and application of discharging type sheet-pile wharf.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (1)
1. separating the unloading effect evaluation method of pile-supported platform in discharging type sheet-pile wharf, it is characterised in that: include the following steps,
Step 1, according to separation discharging type sheet-pile wharf data to be assessed, the first numerical analysis model is established, i.e. separation off-load
The numerical analysis model of formula sheet-pile wharf model calculates front wall moment of flexure, cushion cap stake moment of flexure, cushion cap stake top axle power and cushion cap stake water
Prosposition moves；
Step 2, pile-supported platform is removed on the basis of the first numerical analysis model, second value analysis model is established, before calculating
Wall moment of flexure, front wall horizontal displacement, cushion cap stake moment of flexure, cushion cap stake top axle power and cushion cap stake horizontal displacement；
Step 3, cushion cap stake is gone on the basis of second value analysis model, establishes third value analysis model, it is curved to calculate front wall
Square and front wall horizontal displacement；
Step 4, by comparing the calculated result of the first numerical analysis model and second value analysis model, pile-supported platform is evaluated
Vertical Unloading Effect；By comparing the calculated result of second value analysis model and third value analysis model, evaluation pile is flat
The horizontal direction Unloading Effect of platform；Mould is analyzed by comparing the first numerical analysis model, second value analysis model and third value
The calculated result of type evaluates the space Unloading Effect of pile-supported platform, i.e., the comprehensive superposition Unloading Effect of vertical and horizontal direction；
By the cushion cap stake top axle power in the first numerical analysis model of comparison and second value analysis model calculated result and most
The variation degree of big horizontal displacement evaluates the vertical Unloading Effect of pile-supported platform；Vertical Unloading Effect degree includes significant, general
It is logical to show with unknown；
Specific judgement schematics are as follows:
Wherein, Np,1And Np,2Cushion cap stake stake in respectively the first numerical analysis model and second value analysis model calculated result
Apical axis power, Dhp,1And Dhp,2Cushion cap stake in respectively the first numerical analysis model and second value analysis model calculated result is most
Big horizontal displacement；
Pass through the front wall maximal bending moment and maximum in comparison second value analysis model and third value analysis model calculated result
The variation degree of horizontal displacement evaluates the horizontal direction Unloading Effect of pile-supported platform；Horizontal direction Unloading Effect degree include it is significant,
It is common to show with unknown；
Specific judgement schematics are as follows:
Wherein, Mw,2And Mw,3Front wall respectively in second value analysis model and third value analysis model calculated result is maximum
Moment of flexure, Dhw,2And Dhw,3Front wall most flood respectively in second value analysis model and third value analysis model calculated result
Prosposition moves；
Pass through the variation of the front wall maximal bending moment in the first numerical analysis model of comparison and third value analysis model calculated result
Degree compares the variation journey of the first numerical analysis model and the cushion cap stake maximal bending moment in second value analysis model calculated result
Degree, evaluates the space Unloading Effect of pile-supported platform；Space Unloading Effect degree includes significant, common and unknown shows；
Specific judgement schematics are as follows:
Wherein, Mw,1And Mw,3Front wall in respectively the first numerical analysis model and third value analysis model calculated result is maximum
Moment of flexure, Mp,1And Mp,2Cushion cap stake maximum in respectively the first numerical analysis model and second value analysis model calculated result is curved
Square.
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| CN106759083B (en) * | 2016-12-19 | 2019-02-26 | 中交第一航务工程勘察设计院有限公司 | Form general model design method suitable for deep water discharging type sheet pile bulkhead structure |
| CN108256204A (en) * | 2018-01-12 | 2018-07-06 | 河海大学 | A kind of high pile pier structure overall security appraisal procedure based on energy method |
| CN110258442B (en) * | 2019-05-31 | 2021-03-30 | 中交水运规划设计院有限公司 | Method and device for determining engineering construction process scheme of high-pile wharf |
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| CN1760468A (en) * | 2005-11-17 | 2006-04-19 | 中交第一航务工程勘察设计院 | Half blind type structure for increasing brearing capability of sheet pile wall |
| CN201172810Y (en) * | 2008-03-28 | 2008-12-31 | 中交第一航务工程勘察设计院有限公司 | Separate unloading type sheet pile bulkhead structure |
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| JP2002048689A (en) * | 2000-08-02 | 2002-02-15 | Sumitomo Rubber Ind Ltd | Characteristic analysis method of fender |
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|---|---|---|---|---|
| CN1760468A (en) * | 2005-11-17 | 2006-04-19 | 中交第一航务工程勘察设计院 | Half blind type structure for increasing brearing capability of sheet pile wall |
| CN201172810Y (en) * | 2008-03-28 | 2008-12-31 | 中交第一航务工程勘察设计院有限公司 | Separate unloading type sheet pile bulkhead structure |
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| 《遮帘式地连墙板桩结构遮帘效应研究》;焦志斌 等;《水利学报》;20141231;第45卷;第125-129页 |
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