CN106894310B - Concrete road surface structure and its design method based on PVA Yu PAN material - Google Patents
Concrete road surface structure and its design method based on PVA Yu PAN material Download PDFInfo
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- CN106894310B CN106894310B CN201710171102.3A CN201710171102A CN106894310B CN 106894310 B CN106894310 B CN 106894310B CN 201710171102 A CN201710171102 A CN 201710171102A CN 106894310 B CN106894310 B CN 106894310B
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- 239000004567 concrete Substances 0.000 title claims abstract description 161
- 239000000463 material Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000010410 layer Substances 0.000 claims abstract description 94
- 239000000835 fiber Substances 0.000 claims abstract description 62
- 239000002344 surface layer Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004576 sand Substances 0.000 claims description 17
- 239000003638 chemical reducing agent Substances 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000010881 fly ash Substances 0.000 claims description 16
- 239000004568 cement Substances 0.000 claims description 15
- -1 rubble Substances 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 13
- 230000003137 locomotive effect Effects 0.000 abstract description 5
- 229920002239 polyacrylonitrile Polymers 0.000 description 64
- 239000004372 Polyvinyl alcohol Substances 0.000 description 46
- 229920002451 polyvinyl alcohol Polymers 0.000 description 46
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 33
- 235000017491 Bambusa tulda Nutrition 0.000 description 33
- 241001330002 Bambuseae Species 0.000 description 33
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 33
- 239000011425 bamboo Substances 0.000 description 33
- 230000002787 reinforcement Effects 0.000 description 31
- 230000000694 effects Effects 0.000 description 9
- 239000002689 soil Substances 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/142—Mixtures or their components, e.g. aggregate
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/145—Sliding coverings, underlayers or intermediate layers ; Isolating or separating intermediate layers; Transmission of shearing force in horizontal intermediate planes, e.g. by protrusions, by inlays
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to a kind of concrete road surface structure and its design method based on PVA Yu PAN material, this method comprises: concrete road surface structure to be onstructed includes bottom, the middle layer on the bottom and the surface layer on the middle layer on ground layer；The material for designing bottom is PVA fiber concrete；Design obtains the strength failure criterion and thickness design value of the middle layer；The material for designing surface layer is PAN fiber concrete.The design of intensity and thickness has been carried out for middle layer therein, the bearing requirements that heavy loading locomotive can be met also are compliant with the design requirement of ground layer bearing capacity, can be improved the structural strength of middle layer, increase its stress-bearing capability, avoids the cracking and breakage problem of concrete road surface structure.Bottom and PAN and the PVA fiber concrete of surface layer increase the waterproofness and flexibility of pavement structure, avoid the problem that water is penetrated into and cracked.
Description
Technical field
The present invention relates to concrete road surface structure and design methods, refer in particular to a kind of concrete road based on PVA Yu PAN material
Face structure and its design method.
Background technique
The road surface of the factory or construction site that generally construct is all made of concrete road surface, thickness from 15cm to 50cm not
Deng, because too high using the cost of armored concrete arrangement of reinforcement, and the cost of reinforcing bar derusting protection or epoxy protection is also higher, therefore in order to
Save the cost generallys use plain concrete and pours to be formed, and the structure that one side plain concrete pours the concrete road surface to be formed is strong
It spends not high.Material is transported at the construction field (site) or the equipment that uses is more belongs to heavy loading locomotive, and the carrying of concrete road surface is wanted
Ask higher, due to rolling for heavy loading locomotive, so that plain concrete pours the concrete road surface to be formed and cracking, fracture often occurs
Problem；The waterproof performance that another aspect plain concrete pours the concrete road surface to be formed is lower, for the area more than rainy season, if adopting
Rainwater is made to be easy to permeate with plain concrete road surface, if then holding very much to improve intensity using reinforced concrete structure in this way
Reinforcing bar is easily led to get rusty；The flexibility that another aspect plain concrete pours the concrete road surface to be formed is poor, for Muddy Bottoms compared with
Soft bottom, plain concrete road surface can be very easy to crack.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of concrete road based on PVA Yu PAN material is provided
Face structure and its design method solve to pour the concrete road surface to be formed using plain concrete for save the cost in the prior art
Structural strength is not high, waterproof performance is low and flexibility is poor and the problem for cracking, being broken and seeping water etc. often occurs.
Realizing the technical solution of above-mentioned purpose is:
The design method based on PVA Yu the concrete road surface structure of PAN material that the present invention provides a kind of, including walk as follows
It is rapid:
Concrete road surface structure based on PVA and PAN material to be onstructed includes the bottom being set on ground layer, is set to
Middle layer on the bottom and the surface layer on the middle layer；
The material for designing the bottom is PVA fiber concrete, and the PVA fiber concrete includes cement, flyash, mine
Ground-slag, sand, rubble, water, water-reducing agent, PVA staple fiber and air entraining agent；
Design the intensity of the middle layer according to the stress condition of the concrete road surface structure and thickness obtain it is corresponding
Strength failure criterion and thickness design value choose the intermediate layer material of respective intensities according to designed strength failure criterion；Foundation
Design the surface layer material be PAN fiber concrete, the PAN fiber concrete include cement, flyash,
Sand, rubble, water, water-reducing agent, PAN staple fiber and air entraining agent.
Design method of the invention is related to a kind of concrete road surface structure based on PVA Yu PAN material, using PAN fiber
Surface layer of the concrete as pavement structure, the interface exquisiteness waterproof which forms are fitted so that rain infiltration is difficult
The area more than rainy season is answered, there is good waterproof performance.And the surface smoothness of PAN fiber concrete is good, can make as surface layer
Obtaining pavement structure has preferable appearance.Bottom using PVA fiber concrete as pavement structure, the PVA fiber concrete
Appearance is coarse, plays the role of elastic mattress, increases the flexibility of pavement structure, is conducive to bonding middle layer, so that bottom is not
It is easy to crack, it is suitable for silt soil strata.The intensity and thickness for devising middle layer, make it meet load requirement, can either support
The vehicle travelled on pavement structure, also can effective protection ground layer, avoid the problem that pavement cracking and fracture.Bottom and surface layer
As protective layer, it is also beneficial to surface layer anticracking, bottom also acts moisture-proof effect.
The present invention is based on the design method of PVA and the concrete road surface structure of PAN material further improvement lies in that, also wrap
Include: the thickness design value of the middle layer obtained according to design designs the spacing of the double-deck bamboo reinforcement structure:
The bamboo reinforcement structure for being located at top in the double-deck bamboo reinforcement structure away from the distance of the middle layer upper surface and is located at bottom
Bamboo reinforcement structure be designed as concrete cover minimum thickness away from the distance of the middle layer lower surface, thus it is described bilayer bamboo reinforcement
The spacing of structure is the thickness design value of the middle layer and the difference of twice of concrete cover minimum thickness.
The present invention is based on the design method of PVA and the concrete road surface structure of PAN material further improvement lies in that, also wrap
Include: it is grid-like that the double-deck bamboo reinforcement structure is both designed as two-way bamboo reinforcement.
The present invention is based on the design method of PVA and the concrete road surface structure of PAN material further improvement lies in that, choose
The intermediate layer material of respective intensities is the concrete for choosing respective intensities.
The present invention is based on the design method of PVA and the concrete road surface structure of PAN material further improvement lies in that, design
The bottom and the material of the surface layer are the fiber concrete that strength grade of concrete is C40.
The present invention is based on the design method of PVA and the concrete road surface structure of PAN material further improvement lies in that, it is described
Surface layer uses strength grade of concrete for the PAN fiber concrete of C40, the PAN fiber concrete include cement, flyash,
Sand, rubble, water, water-reducing agent, PAN staple fiber and air entraining agent.
The present invention is based on the design method of PVA and the concrete road surface structure of PAN material further improvement lies in that, it is described
Cement, flyash, sand, rubble, water, water-reducing agent, PAN staple fiber and air entraining agent weight ratio be 358: 89: 754: 959
∶170∶4.47∶1∶0.134。
The present invention is based on the design method of PVA and the concrete road surface structure of PAN material further improvement lies in that, it is described
Bottom uses strength grade of concrete for the PVA fiber concrete of C40, the PVA fiber concrete include cement, flyash,
Slag powders, sand, rubble, water, water-reducing agent, PVA staple fiber and air entraining agent.
The present invention is based on the design method of PVA and the concrete road surface structure of PAN material further improvement lies in that, it is described
Cement, flyash, slag powders, sand, rubble, water, water-reducing agent, PVA staple fiber and air entraining agent weight ratio be 304: 130
∶0.9∶720∶1081∶170∶4.34∶1∶0.130。
The design method construction based on PVA and the concrete road surface structure of PAN material is utilized the present invention also provides a kind of
The concrete road surface structure based on PVA Yu PAN material formed, including being set to bottom on ground layer, set on the bottom
On middle layer and the surface layer on the middle layer, be embedded with the double-deck bamboo reinforcement structure in the middle layer.
Detailed description of the invention
Fig. 1 be the present invention is based in the concrete road surface structure of PVA and PAN material and its design method based on PVA with
The cross-sectional view of the concrete road surface structure of PAN material.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refering to fig. 1, the present invention provides a kind of concrete road surface structure and its design method based on PVA Yu PAN material,
For solving existing to pour the concrete road surface structure to be formed using plain concrete and often open because structural strength is not high
The problem of splitting and being broken.Design method of the invention and the pavement structure according to the constructed formation of the design method, pass through design
The intensity value and thickness value of middle layer ensures that middle layer meets load requirement, can either support the heavy duty travelled on pavement structure
Locomotive, also can effective protection ground layer can be avoided pavement cracking and fracture and since interlayer structure intensity is met the requirements
The problem of, the double-deck bamboo reinforcement structure for improving intensity is in addition additionally provided in middle layer, it is further to control opening for pavement structure
It splits and breakage problem, bamboo reinforcement structure is at low cost using circle bamboo, and derusting protection and maintenance operations without reinforcing bar.Above-mentioned design
Middle layer combine upper and lower surface layer and bottom, utilize surface layer and the protective action of the fiber concrete structure of bottom, on the one hand
The effect of anti-cracking of surface layer is improved, another aspect bottom also acts moisture-proof effect.Surface layer uses PAN fiber concrete, has
Good waterproof performance, bottom use PVA fiber concrete, so that pavement structure has preferable flexibility, play elastic cotton-padded mattress
Pad effect, avoids cracking.With reference to the accompanying drawing to the present invention is based on the concrete road surface structures and its design of PVA and PAN material
Method is illustrated.
As shown in Figure 1, the design method provided by the invention based on PVA Yu the concrete road surface structure of PAN material, including
Following steps:
Concrete road surface structure 20 based on PVA and PAN material to be onstructed includes the bottom on ground layer 11
21, the middle layer 22 on bottom 21 and the surface layer 23 on middle layer 22, ground layer 11 shown in Fig. 1
For the solum below of ground 10, as subsoil.Certainly, which is not limited to subsoil, or artificial
Ground can be formed by bed course to be laid with and tamping using aggregate chips, sand, and/or combination ash etc..
The material for designing bottom 21 is PVA fiber concrete, which includes cement, flyash, slag
Powder, sand, rubble, water, water-reducing agent, PVA staple fiber and air entraining agent；
The intensity of middle layer 22 is designed according to the stress condition of concrete road surface structure and thickness obtains corresponding intensity and sets
Evaluation and thickness design value choose the intermediate layer material of respective intensities according to designed strength failure criterion；
The material for designing surface layer 23 is PAN fiber concrete, which includes cement, flyash, sand, broken
Stone, water, water-reducing agent, PAN staple fiber and air entraining agent.
As a better embodiment of the invention, the material for designing bottom 21 and surface layer 23 is that strength grade of concrete is
The fiber concrete of C40.Preferably, surface layer 23 uses strength grade of concrete for PAN (polyacrylonitrile) fiber coagulation of C40
Soil, PAN fiber concrete include cement, flyash, sand, rubble, water, water-reducing agent, PAN staple fiber and air entraining agent.It is therein
Cement, flyash, sand, rubble, water, water-reducing agent, PAN staple fiber and air entraining agent weight ratio be 358: 89: 754: 959:
170:4.47:1:0.134.Bottom 21 uses strength grade of concrete for PVA (polyvinyl alcohol) fiber concrete of C40, and PVA is fine
Tieing up concrete includes cement, flyash, slag powders, sand, rubble, water, water-reducing agent, PVA staple fiber and air entraining agent.Water therein
Mud, flyash, slag powders, sand, rubble, water, water-reducing agent, PVA staple fiber and air entraining agent weight ratio be 304: 130: 0.9
:720:1081:170:4.34:1:0.130.The material and match ratio that surface layer 23 and stratum 21 use are shown in following Tables 1 and 2:
Table 1: surface layer is using the chopped PAN fiber concrete of C40 and its match ratio
Table 2: bottom is using the chopped PVA fiber concrete of C40 and its match ratio
The interface exquisiteness waterproof that PAN fiber concrete therein is formed may make that rain infiltration is difficult, and surface smoothness
Number, so that surface layer has preferable appearance and good waterproof effect.PVA fiber concrete appearance is coarse, and it is intermediate to be conducive to bonding
Layer, and there is preferable elastic mattress effect, so that bottom is not easy to crack, and is suitable for silt soil strata, which increase road surfaces
The flexibility of structure.PAN fiber concrete and PVA fiber concrete are combined as pavement structure, so that pavement structure has
Preferable waterproof performance also has preferable flexibility, avoids cracking, the middle layer of pavement structure, which devises, meets load requirement
Intensity and thickness, can preferably solve the problems, such as pavement cracking and fracture.
As another better embodiment of the invention, middle layer is designed according to the stress condition of concrete road surface structure
Intensity and thickness obtain corresponding strength failure criterion and thickness design value, comprising:
Intensity and the thickness of middle layer 22 are designed to obtain strength failure criterion and thickness design value, comprising:
Design obtains the strength failure criterion fc of middle layer:
Fc > F/bL (formula one)
In formula one, fc is the strength failure criterion of middle layer, and F is held by the concrete road surface structure based on PVA and PAN material
The axis weight received, b are cartwheel projection to the width based on PVA Yu the concrete road surface structure of PAN material, and L is cartwheel projection to base
In the length of PVA and the concrete road surface structure of PAN material, bL is the projected area of wheel；Surface layer 23 and bottom are not considered at this time
The stress of layer 21, wheel load mainly consider the stress of middle layer, i.e., wheel is to the concrete road surface based on PVA Yu PAN material
The load of structure all acts in middle layer, with this come strength failure criterion needed for calculating middle layer；
The intermediate layer material of respective intensities is chosen according to the strength failure criterion fc of the middle layer obtained；
Design obtains the thickness design value of middle layer:
Provide that the angle of flare θ of the stress of concrete is 45 ° according to punching calculating section in " Code for design of concrete structures ",
Then θ=1 tan, so that ground layer and the transmitting stress based on PVA and the junction of the concrete road surface structure of PAN material meet
σ:
σ=F/ [(b+2tan θ δ2)(L+2tan θ δ2)]≤fa (formula two)
In formula two, σ be ground layer and the transmitting stress based on PVA Yu the junction of the concrete road surface structure of PAN material,
The axis weight that F is born for the concrete road surface structure based on PVA and PAN material, b are cartwheel projection to based on PVA and PAN material
Concrete road surface structure width, L is cartwheel projection to the length based on PVA Yu the concrete road surface structure of PAN material, δ2
For the thickness of middle layer, fa is the design ultimate bearing capacity of ground layer, (b+2tan θ δ2)(L+2tan θ δ2) be wheel projection
Area is diffused into the diffusion area after ground layer surface；
The thickness design value of middle layer is calculated by formula two, can be obtained according to formula two:
4δ2 2+2(b+L)δ2+ Lb-F/fa >=0 (formula three)
When solution formula three, give up a negative root, obtains the thickness design value δ of middle layer2,
δ2≥0.25{[(b-L)2+4F/fa]0.5-b-L}
Design the thickness δ of bottom 211With the thickness δ of surface layer 233For concrete cover minimum thickness, obtained to design
Meet the concrete road surface structure based on PVA Yu PAN material of force request.According to rule in " Code for design of concrete structures "
Fixed concrete cover minimum thickness is 10cm to 15cm, general to choose 10cm or 15cm.Preferably, further include: in centre
The double-deck bamboo reinforcement structure is buried in layer 22, is arranged between the bilayer bamboo reinforcement structure in certain spacing, the double-deck bamboo reinforcement structure uses bamboo
Son is spliced to form.
Concrete road surface structure based on PVA Yu PAN material provided by design method of the invention, in therein
Interbed has carried out the design of intensity and thickness, can meet the bearing requirements of heavy loading locomotive, also is compliant with ground layer bearing capacity
Design requirement, and be provided with the double-deck bamboo reinforcement structure inside middle layer, can be improved the structural strength of middle layer, increase its stress
Ability avoids the cracking and breakage problem of the concrete road surface structure based on PVA Yu PAN material.Bamboo reinforcement designed by the present invention
Pavement concrete structure can be good at solution plain concrete and pour the cracking for the concrete road surface to be formed, breakage problem, and bamboo
Cost is relatively low for muscle structure, also complies with the requirement of save the cost, bottom and surface layer as protective layer, is also beneficial to surface layer anticracking,
Bottom also acts moisture-proof effect.
As the another better embodiment of the present invention, the design method further include: the middle layer 22 obtained according to design
Thickness design value δ2Design the spacing of the double-deck bamboo reinforcement structure:
The bamboo reinforcement structure at top will be located in the double-deck bamboo reinforcement structure away from the distance of 22 upper surface of middle layer and positioned at bottom
Bamboo reinforcement structure is designed as concrete cover minimum thickness away from the distance of 22 lower surface of middle layer, thus between the double-deck bamboo reinforcement structure
Away from the thickness design value δ for middle layer2With the difference of twice of concrete cover minimum thickness.If the bamboo reinforcement at top will be located at
Structure is designed as 10cm away from the distance of 22 upper surface of middle layer, will be located at the bamboo reinforcement structure of bottom away from middle layer 22 lower surface away from
From 10cm is designed as, then the spacing of the double-deck bamboo reinforcement structure is δ2-20cm.Preferably, the double-deck bamboo reinforcement structure is both designed as two-way
Bamboo reinforcement it is grid-like, using circle bamboo as arrangement of reinforcement, transverse and longitudinal is cross-linked, and forms grid-like bamboo reinforcement structure.The ruler of bamboo reinforcement structure
Generous modest ability is 10mm*30mm*500mm.
As another better embodiment of the invention, the intermediate layer material for choosing respective intensities is to choose respective intensities
Concrete.When selecting concrete, concrete strength is selected to meet the strength failure criterion fc of middle layer.Selected concrete
Non- high-flowing concrete of the slump in 180mm can be the coagulation that strength grade of concrete is C40, C50 or C35
Soil.
The present invention also provides a kind of design sides using above-mentioned based on PVA Yu the concrete road surface structure of PAN material
Method is constructed the concrete road surface structure based on PVA Yu PAN material to be formed, as shown in Figure 1, should be based on the mixed of PVA and PAN material
During solidifying soil surface structure 20 includes the bottom 21 on ground layer 11, the middle layer 22 on bottom 21 and is set to
Surface layer 23 on interbed 22 is embedded with the double-deck bamboo reinforcement structure in middle layer 22.The intensity of middle layer 22 therein and thickness according to
It is set according to strength failure criterion and thickness designed in the design method of the above-mentioned concrete road surface structure based on PVA and PAN material
Evaluation is selected, the thickness and intensity of bottom 21 and the surface layer 23 also concrete road according to above-mentioned based on PVA Yu PAN material
The design method of face structure is selected.
Surface layer in concrete road surface structure based on PVA and PAN material of the invention uses PAN fiber concrete, by
In the interface exquisiteness waterproof that the PAN fiber concrete is formed, rain infiltration is difficult, and surface smoothness is good so that surface layer have compared with
Good appearance and good waterproof effect.Bottom is conducive to using PVA fiber concrete since PVA fiber concrete appearance is coarse
Middle layer is bonded, and there is preferable mattress effect, elasticity is increased, so that bottom is not easy to crack.PVA fiber concrete increases
The flexibility of pavement structure, the waterproofness of PAN fiber concrete can be avoided so that pavement structure is adapted to rainy environment
The leakage of rainwater replaces reinforcing bar using bamboo reinforcement, solves the problems, such as reinforcing bar easily get rusty with it is at high cost, bottom is suitable for muck soil
Layer, avoids cracking.The faying face of bottom of the invention, middle layer and surface layer has carried out frosting treatment, in order to each knot
Effective bonding between structure layer, and the intensity of middle layer and thickness are all satisfied supported load requirement, in conjunction with surface layer and bottom
Protective effect, the concrete road surface structure of the invention based on PVA and PAN material can be good at solving concrete road surface
Cracking and breakage problem.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (6)
1. a kind of design method based on PVA Yu the concrete road surface structure of PAN material, which comprises the steps of:
Concrete road surface structure based on PVA and PAN material to be onstructed includes the bottom being set on ground layer, described in
Middle layer on bottom and the surface layer on the middle layer；
The material for designing the bottom is PVA fiber concrete, and the PVA fiber concrete includes cement, flyash, slag
Powder, sand, rubble, water, water-reducing agent, PVA staple fiber and air entraining agent；
The intensity of the middle layer is designed according to the stress condition of the concrete road surface structure and thickness obtains corresponding intensity
Design value and thickness design value choose the intermediate layer material of respective intensities according to designed strength failure criterion；And
The material for designing the surface layer is PAN fiber concrete, and the PAN fiber concrete includes cement, flyash, sand, broken
Stone, water, water-reducing agent, PAN staple fiber and air entraining agent；
The intensity of the middle layer is designed according to the stress condition of the concrete road surface structure and thickness obtains corresponding intensity
Design value and thickness design value, comprising:
Design obtains the strength failure criterion fc of the middle layer:
Fc > F/bL formula one
In formula one, fc is the strength failure criterion of middle layer, and F is born for the concrete road surface structure based on PVA and PAN material
Axis weight, b are cartwheel projection to the width based on PVA Yu the concrete road surface structure of PAN material, and L is cartwheel projection to based on PVA
With the length of the concrete road surface structure of PAN material, bL is the projected area of wheel；
Design obtains the thickness design value of the middle layer:
Provide that the angle of flare θ of the stress of concrete is 45 ° according to punching calculating section, then θ=1 tan, thus the ground layer with
The transmitting stress based on PVA and the junction of the concrete road surface structure of PAN material meets σ:
σ=F/ [(b+2tan θ δ2)(L+2tanθδ2)]≤fa formula two
In formula two, σ is ground layer and the transmitting stress based on PVA Yu the junction of the concrete road surface structure of PAN material, F are
The axis weight that concrete road surface structure based on PVA and PAN material is born, b are cartwheel projection to based on PVA and PAN material
The width of concrete road surface structure, L are cartwheel projection to the length based on PVA Yu the concrete road surface structure of PAN material, δ2For
The thickness of middle layer, fa are the design ultimate bearing capacity of ground layer, (b+2tan θ δ2)(L+2tanθδ2) expand for the projected area of wheel
Diffusion area after being scattered to ground layer surface；
The thickness design value of middle layer is calculated by formula two.
2. the design method based on PVA Yu the concrete road surface structure of PAN material as described in claim 1, which is characterized in that
Further include:
The strength grade of concrete for designing the PVA fiber concrete is C40；
The strength grade of concrete for designing the PAN fiber concrete is C40.
3. the design method based on PVA Yu the concrete road surface structure of PAN material, feature exist as claimed in claim 1 or 2
In cement, flyash, slag powders, sand, rubble, water, water-reducing agent, PVA staple fiber in the PVA fiber concrete and drawing
The weight ratio of gas agent is 304: 130: 0.9: 720: 1081: 170: 4.34: 1: 0.130.
4. the design method based on PVA Yu the concrete road surface structure of PAN material, feature exist as claimed in claim 1 or 2
In the weight of cement, flyash, sand, rubble, water, water-reducing agent, PAN staple fiber and air entraining agent in the PAN fiber concrete
The ratio between amount is 358: 89: 754: 959: 170: 4.47: 1: 0.134.
5. the design method based on PVA Yu the concrete road surface structure of PAN material as described in claim 1, which is characterized in that
Further include:
Design the bottom and the surface layer with a thickness of concrete cover minimum thickness.
6. a kind of utilize setting such as the concrete road surface structure described in any one of claim 1 to 5 based on PVA and PAN material
Meter method is constructed the concrete road surface structure based on PVA Yu PAN material to be formed, which is characterized in that including be set to ground layer it
On bottom, the middle layer on the bottom and the surface layer on the middle layer, the bottom is that PVA is fine
Concrete structure is tieed up, the surface layer is PAN fiber concrete.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999888A (en) * | 2006-12-30 | 2007-07-18 | 易志坚 | Road surface structure of rolling flexiable fibre cement concrete as based and construction method thereof |
| CN204491348U (en) * | 2015-03-26 | 2015-07-22 | 王家柱 | A kind of asphalt pavement fiber reinforced lamina top facing |
| CN105174763A (en) * | 2015-10-22 | 2015-12-23 | 北京工业大学 | Environment-friendly regenerated synthetic fiber reinforced concrete used for pavements, bridge decks and industrial terraces |
| JP2016156127A (en) * | 2015-02-23 | 2016-09-01 | 太平洋セメント株式会社 | Concrete pavement |
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2017
- 2017-03-21 CN CN201710171102.3A patent/CN106894310B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999888A (en) * | 2006-12-30 | 2007-07-18 | 易志坚 | Road surface structure of rolling flexiable fibre cement concrete as based and construction method thereof |
| JP2016156127A (en) * | 2015-02-23 | 2016-09-01 | 太平洋セメント株式会社 | Concrete pavement |
| CN204491348U (en) * | 2015-03-26 | 2015-07-22 | 王家柱 | A kind of asphalt pavement fiber reinforced lamina top facing |
| CN105174763A (en) * | 2015-10-22 | 2015-12-23 | 北京工业大学 | Environment-friendly regenerated synthetic fiber reinforced concrete used for pavements, bridge decks and industrial terraces |
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