CN205975498U - Be dish -shaped concrete block bottom protection software row - Google Patents
Be dish -shaped concrete block bottom protection software row Download PDFInfo
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- CN205975498U CN205975498U CN201620741642.1U CN201620741642U CN205975498U CN 205975498 U CN205975498 U CN 205975498U CN 201620741642 U CN201620741642 U CN 201620741642U CN 205975498 U CN205975498 U CN 205975498U
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- concrete block
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- shaped concrete
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Abstract
The utility model discloses a be dish -shaped concrete block bottom protection software row, fill up and the ballast body including arranging, the ballast body is dish -shaped concrete block, dish concrete block adopts hollow round platform structure, the lateral wall angle of inclination less than or equal to 45 of hollow round platform structure it is that the strip is perforated to be equipped with on the lateral wall of hollow round platform structure, dish concrete block adopts strip system of system to connect arrange and stack up. The utility model discloses a dish -shaped concrete block that the adoption has hollow structure, because the turbulent flow acts on dish -shaped concrete block's hollow structure in addition, hangs the silt that moves the motion and gets into the internal accumulation of ballast easily near be dish -shaped concrete block bottom protection software row between the service time as the ballast body to at good velocity of flow gradient and the silt environment of its inside construction, for aquatic organisms provides crude protection place, can effectively improve local ecological environment, be favorable to biodiversity and river healthy, simultaneously the utility model discloses can save engineering materials, have higher anti stability and the stability against sliding of lifting.
Description
Technical field
The utility model is related to the bed protection structure of waterway regulation technical field and in particular to a germline dish concrete block river bottom protection is soft
Body is arranged.
Background technology
River is that the development of human society provides important shipping resource, and because it has, energy consumption is low, the big feature of freight volume
Various countries are enjoyed to pay attention to.Under natural conditions, inconstant water-sediment mathematical model and complicated movable channel boundary, make rushing of river
Silt change has uncertainty, and Channel Condition not always develops towards the direction being conducive to human production activity, many situations
Under, shipping may be produced with huge destruction, such as unimpeded channel accretion go out shallow hinder boat, or the current of smooth-going are because of riverbed
The adjustment of form becomes burbulent dangerous, at random.The preferable situation therefore for present situation Channel Condition, is usually taken engineering measure and stably navigates
Road general layout；Obvious situation is changed for change in bed level, then takes engineering measure to be controlled by being allowed to towards the side being conducive to navigation channel
To development.
The measure stablizing navigation channel general layout be unable to do without river bottom protection engineering；Building the change of waterway regulation building controls change in bed level
When, because the distribution of building periphery water flow field will be readjusted, three-dimensional turbulent fluctuation is stronger, must enter in building periphery certain limit
Row river bottom protection erosion control, to ensure stablizing of regulating structure.Critical role in waterway regulation for the river bottom protection engineering has some idea of.At present
Domestic river bottom protection mainly has jackstone and isostere structure.Dumped rocks protecting foundation material is taken from natural, and cost is relatively low, simple to operate, can play one
Fixed protective action, but because block stone is subject to current long-term perturbance, scour, mostly occur and shift or be absorbed in riverbed sludge, can be weakened it
River bottom protection effect.In isostere river bottom protection, traditional mattress durability is poor, and tension, shearing strength are relatively low.Recently as material science
Develop rapidly, the geotextiles using chemical polymerization thing as raw material as row pad, be widely used in waterway regulation works, correspondingly arrange
Body structural shape is cuboid concrete block soft raft, husky rib soft raft, hinge block soft raft and mixed by being differently formed of ballast
Solidifying soil interlocking segment soft raft etc..
Refer to Fig. 1, existing system cuboid concrete block soft raft, how ballast carrier is made using cuboid concrete block 2, geotextiles are made
Row's pad 1.Because of its good integrity, adapt to riverbed deformability by force, protect Sha Xinghao, be widely used in working water level with the riverbed of lower portion
Protection.It is to need before concrete block soft raft is laid it to be carried out resist to lift stability Calculation (formula 1) and calculation of stability against sliding (formula 4).
1. soft raft is anti-lifts stability Calculation：
V≤Vcr (1)
rR'=(rm- rw)/rw(3)
In formula：V soft raft edge flow velocity (m/s)；
Vcr soft raft edge critical flow velocity (m/s)；
θ coefficient, is that soft raft takes 2；
rR' soft raft is relative to buoyant weight degree；
G acceleration of gravity, takes 9.81 (m/s2)；
tmSoft raft equivalent thickness, takes 0.1m；
rmSoft raft severe, takes 24 (kN/m3)；
rwThe severe of water, takes 10 (kN/m3).
2. soft raft calculation of stability against sliding：
K in formulamSoft raft factor against sliding, takes 1.1～1.3；
γ′aBuoyant weight degree (the kN/m of soft raft3)；
tmSoft raft equivalent thickness (m), takes 0.1m；
α slope angle (°)；
The upper and lower head difference (m) of Δ h soft raft, according to Model Results maximum 0.03m；
γwSevere (the KN/m of water3)；
fsgSoft raft and domatic coefficient of friction, take 0.35.
Anti- lift stability and stability against sliding be concrete block soft raft important performance indexes.
Existing system cuboid concrete block soft raft adopts cuboid solid concrete block, and flat shape is rectangular, and size is usually
40cm × 30cm about, it is to connect conveniently with isostere system, be respectively provided with two grooves in long side both sides.Making above-mentioned cuboid concrete block needs
The concrete material wanted is more.Also have cuboid solid concrete block during using can not improve to be good for using the ecological environment on ground and river
Health.
Content of the invention
The utility model provides a germline dish concrete block river bottom protection software for solving technical problem present in known technology
Row, this river bottom protection soft raft have higher anti-lift stability and stability against sliding, and engineering material can be saved, can improve
Ecological environment and river health using ground.
The utility model is adopted the technical scheme that by solving technical problem present in known technology：One germline dish
Concrete block river bottom protection soft raft, including row's pad and ballast carrier, described ballast carrier is dish-shaped concrete block, and described dish concrete block adopts hollow round table
Structure, the sidewall draft angles of described hollow round table structure are less than or equal to 45 °, be provided be on the side wall of described hollow round table structure
Bar is bored a hole, and described dish concrete block is using being that bar system is connected on described row's pad.
The top surface external diameter of described hollow round table structure is 10～20cm, and bottom surface external diameter is 40～60cm, top surface and bottom surface it
Between distance be 12～15cm.
Described row's pad is to adopt 250g/m2Polypropylene woven cloth sew reinforcement, described row pad is along arranging cross direction
It is provided with longitudinal polypropylene sinew adding strip of a wide 5cm, the length of described longitudinal polypropylene sinew adding strip and described row's pad every 50cm
Length identical；Described row's pad sets the horizontal polypropylene sinew adding strip of the long 300cm of wide 5cm every 200cm；Gather in described longitudinal direction
It is sewed with the described system bar of every two one group of 80cm, the spacing between described system bar group and group between propylene sinew adding strip and arrangement
For 30cm, the interval 20cm of two described system bars in every group, a described dish concrete block is tied by two in every group piece described system bar
Tie up on described row's pad.
Described row's pad is spliced by polylith screening, and every piece of described screening is made along each reserved 25cm in platoon leader direction two ends
For longitudinal lap joint portion.
The utility model has the advantages and positive effects that：
One) by being used as ballast carrier using dish-shaped concrete block, improve whole is dish-shaped concrete block soft raft to the utility model
Resist and lift stability；
Two) by being used as ballast carrier using dish-shaped concrete block, improve whole is dish-shaped concrete block soft raft to the utility model
Stability against sliding；
Three) the utility model is adopted dish-shaped concrete block as ballast carrier, soft as ballast carrier with traditional cuboid concrete block
Body row compare, can material-saving, economical rationality., according to the cuboid concrete for 40cm for the length taking certain river bottom protection soft raft as a example
As ballast carrier, according to traditional cuboid concrete block of a size of 40cm × 30cm × 15cm, this river bottom protection soft raft needs mixed block
Solidifying earth volume is about 18000cm3；According to 40cm × 10cm × 15cm (bottom surface external diameter × top surface external diameter × height) and wall thickness is
The dish-shaped concrete block of 2cm, then the concrete square amount needing is about 4522cm3, the 1/4 of only traditional cuboid concrete block.
Four) the utility model, by being used as ballast carrier using the dish-shaped concrete block with hollow structure, during use, is being
Near dish-shaped concrete block river bottom protection soft raft, because action of turbulent flow adds the hollow structure of dish-shaped concrete block, the silt of suspended motion is easy
Enter accumulation in ballast body, and build good current gradient and sediment environment inside it, in ballast body, flow velocity is slow, is water
Raw biology provides natural protection place, is that aquatile provides preferable concealment effect, aqueous bio is enriched in software
Row bottom, can be effectively improved local environment, be conducive to bio-diversity and river health；Simultaneously because suspended motion silt
Entrance can improve the stability of river bottom protection soft raft further.
In sum, the utility model is while meeting harnessing navigation channels river bottom protection needs, more existing system cuboid concrete block
Soft raft has preferably to resist and lifts stability and stability against sliding, and also has the effect of energy-conserving and environment-protective.
Brief description
Fig. 1 is the partial structural diagram of existing system cuboid concrete block soft raft；
Fig. 2 is partial structural diagram of the present utility model；
Fig. 3 is dish concrete block structure schematic diagram of the present utility model；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the side view of Fig. 3；
Fig. 6 is existing tradition cuboid concrete block force analysis side view；
Fig. 7 is dish concrete block force analysis side view of the present utility model.
In figure：1st, row's pad, 2, cuboid concrete block, 3, dish-shaped concrete block, 4, top surface, 5, bottom surface, 6, side wall, 7, be bar perforation,
8th, it is bar.
Specific embodiment
For content of the invention of the present utility model, feature and effect can be further appreciated that, hereby enumerate following examples, and coordinate
Accompanying drawing describes in detail as follows：
Refer to Fig. 1～Fig. 7, a germline dish concrete block river bottom protection soft raft, including row's pad 1 and ballast carrier, described ballast carrier
For dish-shaped concrete block 3, described dish concrete block 3 adopts hollow round table structure, and the inclination angle of the side wall 6 of described hollow round table structure is less than etc.
In 45 °, the side wall 6 of described hollow round table structure is provided be bar perforation 7, described dish concrete block 3 using be bar 8 be to be connected on institute
On the row's of stating pad 1.
The recommended size of above-mentioned hollow round table structure：Top surface 4 external diameter is 10～20cm, and bottom surface 5 external diameter is 40～60cm, top
The distance between face 4 and bottom surface 5 are 12～15cm, and the dish-shaped concrete block 3 using above-mentioned size is easy to engineer applied, and anti-lifting is stablized
Property and stability against sliding are preferable.
In the present embodiment, described row's pad 1 is to sew reinforcement using the polypropylene woven cloth of 250g/m2, described
Row's pad is provided with longitudinal polypropylene sinew adding strip of a wide 5cm along row's cross direction every 50cm, described longitudinal polypropylene sinew adding strip
Length is identical with the length of described row's pad；Described row's pad 1 sets the horizontal polypropylene reinforcement of the long 300cm of wide 5cm every 200cm
Bar；It is sewed with the described system bar 8 of every two one group of 80cm, described system bar between described longitudinal polypropylene sinew adding strip and arrangement
8 groups of spacing and group between are 30cm, the interval 20cm of two described system bars 8 in every group, and two in every group piece described system bar 8 will
One described dish concrete block 3 is bundled on described row's pad 1.Described row's pad 1 is along each reserved 25cm in platoon leader direction two ends as longitudinal direction
Clinch.
Above-mentioned system dish concrete block river bottom protection soft raft compared with existing system cuboid concrete block soft raft, anti-lift stability preferably,
Process of calculation analysis is as follows：
V≤Vcr (1)
Flow action forms directed force F in the outside of dish-shaped concrete block side wall, with the stream acting on dish-shaped concrete block side-wall outer side
Fast U is positive correlation, i.e. F ∝ U, due to the presence of dish-shaped concrete block sidewall slope angle beta, horizontal direction F can be analyzed to perpendicular to
The normal component Fn=Fsin β of the side wall and tangential component Ft=Fcos β parallel to side wall.Calculating isostere buoyant weight degree γg'
When, need the equivalent severe producing Fn to be designated as γf, that is,
γg'=(γm- γw)/γw+γf(5)
The isostere buoyant weight degree γ ' of existing system cuboid concrete block soft raftgFor：
γg'=(γm- γw)/γw(3)
By Vcr1It is designated as existing system's cuboid concrete block soft raft edge critical flow velocity, Vcr2Be designated as the utility model proposes
System's dish-shaped concrete block river bottom protection soft raft edge critical flow velocity, calculates and understands：
Both compare and understand, of the present utility model anti-lift stability and improveTimes.
Above-mentioned system dish concrete block river bottom protection soft raft compared with existing system cuboid concrete block soft raft, stability against sliding preferably,
Process of calculation analysis is as follows：
When ballast carrier is using dish-shaped concrete block, current form directed force F on the wall of dish-shaped concrete block side, due to sidewall slope angle beta
Presence, horizontal direction F can be analyzed to perpendicular to the normal component Fn=sin β of side wall and tangential component Ft parallel to side wall
=cos β, wherein normal component Fn direction are downward.Calculate isostere buoyant weight degree γg' when, need the equivalent severe producing Fn to be designated as
γf, that is,
γg'=(γm- γw)/γw+γf(9)
By Km1It is designated as existing system cuboid concrete block soft raft factor against sliding, Km2Be designated as the utility model proposes
Be dish-shaped concrete block river bottom protection soft raft factor against sliding, calculate understand：
For existing system cuboid concrete block soft raft：
For being dish-shaped concrete block river bottom protection soft raft：
Both compare and understand, Km2More than Km1, it is that dish-shaped concrete block river bottom protection soft raft stability against sliding is more preferable.
The ballast carrier of above-mentioned system dish concrete block river bottom protection soft raft is concrete prefabricated structure, the Specific construction side of river bottom protection erosion control
Method is：First by prefabricated dish-shaped concrete block 3 by being on bar 8 row's of being fixed on pad 1, then spread to Project Areas by construction Ship Transportation
Row's operation.In process of deployment, stable direction laying should be lifted according to being conducive to isostere lap-joint to resist.
Operation principle of the present utility model：
A the larger water body of () flow velocity flows down from the upper reaches, reach dish-shaped concrete block river bottom protection soft raft institute of system through upper river
Guard area, it is dish-shaped concrete block river bottom protection soft raft that current directly act on, and the performance guarding effect makes riverbed in the range of river bottom protection
Exempt from current scour.
B () system dish concrete block river bottom protection soft raft is subject to the larger water body souring of flow velocity, water body is after dish-shaped concrete block
One normal force is formed on its side wall, action direction points to its bottom row's pad, raising compared with traditional cuboid concrete block
Ballast carrier and the anti-of row's pad lift stability and stability against sliding.Therefore can be born more using river bottom protection region of the present utility model
Big flow velocity.
C (), during current flow through and have and be dish-shaped concrete block river bottom protection soft raft river bottom protection region, river course resistance is more natural not
The situation taking river bottom protection engineering significantly increases, and flow turbulence strengthens, and energy ezpenditure increases, so that flow velocity decreases, favorably
Stability in river bottom protection engineering.
D () is being near dish-shaped concrete block river bottom protection soft raft, because action of turbulent flow adds the hollow structure of dish-shaped concrete block, suspended
The silt of motion easily enters accumulation in ballast body, and in ballast body, flow velocity is slow, is that aquatile provides natural protection place,
Aqueous bio will be enriched in soft raft bottom, can be effectively improved local environment.
Although being described to preferred embodiment of the present utility model above in conjunction with accompanying drawing, the utility model is not
It is confined to above-mentioned specific embodiment, above-mentioned specific embodiment is only schematically, is not restricted, ability
The those of ordinary skill in domain under enlightenment of the present utility model, without departing from the utility model objective and claimed
In the case of scope, a lot of forms can also be made, these belong within protection domain of the present utility model.
Claims (4)
1. a germline dish concrete block river bottom protection soft raft, including row's pad and ballast carrier it is characterised in that described ballast carrier is dish-shaped concrete
Block, described dish concrete block adopts hollow round table structure, and the sidewall draft angles of described hollow round table structure are less than or equal to 45 °, in institute
Stating the side wall of hollow round table structure, to be provided be bar perforation, and described dish concrete block is using being that bar system is connected on described row's pad.
2. it is dish-shaped concrete block river bottom protection soft raft according to claim 1 it is characterised in that the top surface of described hollow round table structure
External diameter is 10～20cm, and bottom surface external diameter is 40～60cm, and the distance between top surface and bottom surface are 12～15cm.
3. it is dish-shaped concrete block river bottom protection soft raft according to claim 1 it is characterised in that described row's pad is to adopt 250g/m2's
Polypropylene woven cloth sews reinforcement, and described row's pad is provided with the longitudinal direction poly- third of a wide 5cm along row's cross direction every 50cm
Dilute sinew adding strip, the length of described longitudinal polypropylene sinew adding strip is identical with the length of described row's pad；Described row's pad sets one every 200cm
The horizontal polypropylene sinew adding strip of the long 300cm of root width 5cm；It is sewed with every two between described longitudinal polypropylene sinew adding strip and arrangement
The described system bar of one group of 80cm, the spacing between described system bar group and group is 30cm, the interval of two described system bars in every group
20cm, one described dish concrete block is bundled on described row's pad two in every group piece described system bar.
4. it is dish-shaped concrete block river bottom protection soft raft according to claim 3 it is characterised in that described row's pad is along platoon leader direction two ends
Each reserved 25cm is as longitudinal lap joint portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620741642.1U CN205975498U (en) | 2016-07-14 | 2016-07-14 | Be dish -shaped concrete block bottom protection software row |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620741642.1U CN205975498U (en) | 2016-07-14 | 2016-07-14 | Be dish -shaped concrete block bottom protection software row |
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| Publication Number | Publication Date |
|---|---|
| CN205975498U true CN205975498U (en) | 2017-02-22 |
Family
ID=58024781
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620741642.1U Expired - Fee Related CN205975498U (en) | 2016-07-14 | 2016-07-14 | Be dish -shaped concrete block bottom protection software row |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049359A (en) * | 2016-07-14 | 2016-10-26 | 交通运输部天津水运工程科学研究所 | Bottom protection soft mattress with disk-shaped concrete blocks tied |
-
2016
- 2016-07-14 CN CN201620741642.1U patent/CN205975498U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049359A (en) * | 2016-07-14 | 2016-10-26 | 交通运输部天津水运工程科学研究所 | Bottom protection soft mattress with disk-shaped concrete blocks tied |
| CN106049359B (en) * | 2016-07-14 | 2018-08-31 | 交通运输部天津水运工程科学研究所 | The dish-shaped concrete block river bottom protection soft raft of system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20190714 |
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| CF01 | Termination of patent right due to non-payment of annual fee |