CN108677715B - A kind of highway bridge subgrade and pavement and its construction method - Google Patents
A kind of highway bridge subgrade and pavement and its construction method Download PDFInfo
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- CN108677715B CN108677715B CN201810537602.9A CN201810537602A CN108677715B CN 108677715 B CN108677715 B CN 108677715B CN 201810537602 A CN201810537602 A CN 201810537602A CN 108677715 B CN108677715 B CN 108677715B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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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
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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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
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
- E01C7/34—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ made of several courses which are not bound to each other ; Separating means therefor, e.g. sliding layers
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Abstract
The present invention relates to a kind of highway bridge subgrade and pavement and its construction methods, belong to highway bridge building technical field, including the ground successively constructed, soil matrix layer, first sand bedding course, second sand bedding course, stabilized zone, upper base and surface layer, construction method on ground the following steps are included: construct soil matrix layer, base stabilization bar is inserted into the soil matrix layer, the first sand bedding course is laid on soil matrix, lattice guest's cage is constructed on sand bedding course, the second sand bedding course is laid with around lattice guest's cage, special-shaped waterproof enhancement layer is laid on the second sand bedding course, special-shaped waterproof enhancement layer is carried out shaping and supported using stiffening plate, base is equipped on stabilized zone.The present invention is additionally arranged the stabilized zone with lattice guest's cage between soil matrix layer and upper base, use by dredge generation it is stifled in a manner of alleviate underground water base in traditional bottom washed away；It is wavy special-shaped waterproof enhancement layer that the present invention, which is provided with cross section, and special-shaped waterproof enhancement layer is made to generate bigger anti-pressure ability and bending strength.
Description
Technical field
The present invention relates to highway bridge building technical fields, specifically, be related to a kind of highway bridge subgrade and pavement and its
Construction method.
Background technique
The service life of highway bridge in addition to by natural environment influences such as the temperature difference, ambient humidity, rich groundwater degree,
It should also be taken into account that superposition of the highway bridge passage situation to existing environment unfavorable factor.In the damage of highway bridge, most
Common two kinds are exactly highway crackle and wave hole, and highway crackle is surface cracking or since upper base collapses caused surface layer
It seeps under the reason of cracking, and base is caused to collapse usually surface water or is penetrated into caused by upper base from side；And wave
Hole be usually more bottom structural collapse after caused by superstructure variation, but no matter which kind of damage, reason is mostly all
Caused by being water erosion.Influence of the water flow to highway is divided into two major classes, and one is seep under surface water to surface layer and upper base
Water eroding and flooding, another kind are that underground water undercurrent washes away soil matrix and bed course, and by capillarity to superstructure
Impregnate, rich groundwater, the frequent regional influence of precipitation in rain season more very.After road is cracked, rainwater and underground
Water can more smoothly enter each layer of ground, and oversize vehicle constantly rolls in addition, penetrate into erosion effect of the water flow to ground of ground
It being superimposed, exacerbation roadbed significantly damages progress, and cause more damaged highway to damage faster, in the region that vehicle pass-through is intensive,
It small crackle and collapses and can expand rapidly, generate apparent crackle and wave hole, repeated to roll influence, lower part road by vehicle
Layer defects can also be gradually expanded, and into more underground water or surface water, increase the influence of vehicle road pavement in turn, formed
The vicious circle of interaction, it can be seen that, in the section that vehicle pass-through is intensive, the most direct approach of prolonging service life of pavement
Generation exactly the problems such as preventing micro-crack at the beginning or wave is cheated.
In order to reduce water flow to the seepage failure of highway, people take a variety of control methods, have developed different types of
Road structure.For example, the patent of an entitled roadbed layering pavement structure wrapped entirely and its construction method, the application number of the patent
Be 2013105000130, publication date is on June 24th, 2015, it discloses a kind of roadbed pavement structure for wrapping entirely of layering and its
Construction method, pavement structure include roadbed, and roadbed is multilayered structure, and every layer is surrounded by the enhancing of roadbed waterproof entirely in a sealing manner
Layer, and superposition forms roadbed entirety；It has blocked roadbed bearing layer and outer while improving the bearing capacity and stability of roadbed
The water coke slurry on boundary, can both prevent surface water, roadbed side slope infiltration and underground water enter inside roadbed bearing layer and pavement structure and
Bearing capacity and stability are influenced, while effectively solving Water Damage, moreover it is possible to which the water content control for guaranteeing roadbed material keeps roadbed long
Phase is under the optimum moisture content of Construction control and works normally.But there is also following defects for the invention: first, road surface by
When load rolls or generates support missing due to collapsing, road surface easily generates waveform and rises and falls and wave hole, this body structure of roadbed
If flat structures, the load being subject to also is easy road bed to bend, therefore use square cross perpendicular to the load of road bed
The roadbed in face is very limited for the effect for preventing above-mentioned waveform from rising and falling；Second, by roadbed and upper by the way of wrapping up entirely
The mode of base's package is unfavorable for roadbed and sufficiently sinks, underground water water content region abundant, especially Used in Rainy Seasons of Southern Cities, underground water
The roadbed of sealing can be floated, it is serious that roadbed is caused to shift, destroy road overall structure.
In addition the pavement structure of an entitled comprehensive waterproof enhancing roadbed and its patent document of construction method are also checked in, it should
Patent application No. is 2013104955360, publication date is on May 13rd, 2015, and it discloses a kind of comprehensive waterproofs to enhance road
The pavement structure and its construction method of base, pavement structure include roadbed, and roadbed is surrounded by the enhancing of roadbed waterproof entirely in a sealing manner
Layer；The present invention has blocked roadbed bearing layer and extraneous water coke slurry, both may be used while improving the bearing capacity and stability of roadbed
Prevent surface water, roadbed side slope infiltration and underground water from entering inside roadbed bearing layer and pavement structure and influencing bearing capacity and stabilization
Property, while effectively solving Water Damage, moreover it is possible to which the water content control for guaranteeing roadbed material makes roadbed be chronically at Construction control
It is worked normally under optimum moisture content.The invention and above-mentioned documents 1 there are the problem of it is similar, will all by the way of wrapping up entirely
Roadbed and upper base wrap up, and being played with this prevents underground water and surface water from making to the destructions such as wash away of roadbed and upper base
With, but a large amount of geomembrane is not only wasted by the way of package, construction cost is improved, and in a wide range of work progress
Also it is difficult to ensure the sealing effect of geomembrane, in Roadway Construction, roadbed or upper base cannot make too high, also just be difficult to ensure
Roadbed is to the support strength of load, and in this case, surface layer is just very easy to the destruction rolled repeatedly by vehicle, generates road
Face cracking and wave cheat equivalent damage.
It is urgent in order to better solve common quality problems, the people such as highway bridge road surface is easy to appear crackle, wave is cheated
The highway bridge construction for enriching area for groundwater run off is needed to research and develop novel highway bridge construction method.
Summary of the invention
1, it to solve the problems, such as
Aiming at the problem that highway bridge road surface of prior art construction production is easy to appear crackle, wave hole, the present invention is mentioned
It is comprehensive using base's material component in improvement pavement structure, adjusting etc. for a kind of highway bridge subgrade and pavement and its construction method
Means improve road surface and are easy the problem of being washed away by water, extend highway bridge service life.
2, technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of highway bridge subgrade and pavement, including ground, it is described that soil matrix layer, skewer in the soil matrix layer have been constructed on ground
It is inserted with base stabilization bar, the base stabilization bar submerges in soil matrix layer, is laid with the first sand bedding course on the soil matrix layer, and first
Lattice guest's cage has been constructed on sand bedding course, and stone is filled in the lattice guest cage, the second sand bedding course of laying above lattice guest cage, described second
It is laid with stabilized zone on sand bedding course, the stabilized zone includes special-shaped waterproof enhancement layer and is covered on the steady of special-shaped waterproof enhancement layer periphery
Fixed soil, the abnormal shape waterproof enhancement layer includes the waterproofing geomembrane of filler material and sealed envelope in filler material periphery, special-shaped waterproof
Stiffening plate is equipped with inside enhancement layer, the cross section of the stiffening plate is waveform；Upper base is equipped with above the stabilized zone, it is described
Upper base is made of the mixture of gravel, stone, slag, clay and lime, has built surface layer above upper base.
Preferably, length direction S-type extension of the stiffening plate along highway.
Preferably, it is connected with each other by way of buckling grafting between the stiffening plate.
The stone volume being preferably located in lattice guest's cage is gradually increased around from center.
Preferably, the upper surface of the upper base is the arcuate structure of protrusion.
Preferably, the mass percent of the gravel, stone, slag, clay and lime is 18:23:15:8:2.
Preferably, the diameter of the base stabilization bar is not more than 8cm.
A kind of highway bridge subgrade and pavement construction method, the steps include:
S1, soil matrix layer is constructed on ground, in admix the 37 lime earths of two to three one-tenth, it is steady that ground is inserted into the soil matrix layer
Fixed pole, repeatedly levelling to soil matrix layer later and compacting；
S2, the first sand bedding course is laid on soil matrix layer, the thickness of the first sand bedding course is between 0.3m-0.5m；
S3, lattice guest's cage is constructed on sand bedding course, fill stone in lattice guest cage, be laid with large scale stone in bottom first, so
It is laid with small size stone at middle part afterwards, uses large scale stone around small size stone, and covered using large scale stone
Lid forms the arrangement pattern that stone granularity is gradually increased from lattice guest's cage center to surrounding；
S4, it is laid with the second sand bedding course around lattice guest's cage, and compacting levelling to the second sand bedding course；
S5, it is laid with special-shaped waterproof enhancement layer above the second sand bedding course, waterproofing geomembrane is laid on the second sand pad first
On layer, filler material is then constructed on waterproofing geomembrane, and stiffening plate is set in the middle part of filler material, and will be filled using waterproofing geomembrane
Expect sealed envelope, waterproofing geomembrane periphery constitutes stabilized zone using soil covering is stablized, and the cross section of stiffening plate and special-shaped waterproof increase
The cross section of strong layer is waveform；
Base is equipped on S6, the stabilized zone, the material of the upper base is by gravel, stone, slag, clay and stone
The mixture composition of ash, wherein the mass percent of each component is 18:23:15:8:2；
S7, surface layer is made in the upper base, the surface layer is cement concrete layer or bitumen layer.
Preferably, it needs to keep ground stabiliser bar surface wettability when being inserted into base stabilization bar.
Preferably, during making upper base, appropriate spray water mist, and after completing immediately in upper base
Braided fabric insulating layer is covered, until drying regime is restored substantially by upper base.
3, beneficial effect
Compared with the prior art, the invention has the benefit that
(1) present invention is additionally arranged the stabilized zone with lattice guest's cage between soil matrix layer and upper base, which acts predominantly on
Base in traditional bottom is washed away in alleviating underground water, underground water washes away highway bridge in order to prevent in the prior art, past
Toward using by Di Shang base, perhaps roadbed carries out the scheme of full package waterproof but since poor sealing or underground water are excessively rich
Richness causes roadbed integrally to float and deviate, and uses and can be avoided above-mentioned these problems in a manner of dredging for blocking up, in order to mitigate underground
To the blocking of ground and equal side effects are washed away when water passes through, using special stone arrangement and bar planting etc. in soil matrix layer
Mode consolidates hydrophobic soil, and the difficulty and cost of geomembrane package is also greatly saved.
(2) present invention is completely inserted into soil matrix layer using the base stabilization bar for not being shorter than ground base, improves soil matrix layer
Effect with the attached property of leading of ground, base stabilization bar is similar to bar planting, and the entire compression anti-seismic performance of soil matrix layer can be improved,
It conserves water and soil to a certain extent.
(3) present invention to insertion base stabilization bar soil matrix layer and cover base stabilization bar soil matrix layer between production when
Between difference give particular technique parameter, the globality that soil matrix layer is constructed can be effectively improved using the technical solution, prevent first
Layering is generated between the soil matrix layer in stage and the soil matrix layer for increasing paving, be ensure that the globality of soil matrix layer, is effectively prevented underground water
Soil matrix layer is invaded and washed away, the soil matrix layer service life is extended.
(4) the small stone of granularity is arranged in lattice guest cage most middle part by the present invention, is improved lattice guest's cage center bulk density, is stablized lattice
Guest's cage center of gravity prevents underground water from elapsing lattice guest's cage；The big stone of granularity is disposed adjacent to the position of lattice guest's cage, due to great Shi
Big gap is more readily formed between block, therefore can reduce the possibility of gravel or dregs blocking lattice guest cage, it is long-term to keep lattice guest
Cage draining is unobstructed.
(5) it is wavy special-shaped waterproof enhancement layer that the present invention, which is provided with cross section, and wavy structure can will be to inclining
The vertical pressure on inclined-plane is converted into pressure at right angle to the inclined-plane and the extruding force along inclined-plane, and load is directly vertical is pressed in plane
On compare, which can carry bigger bending moment, can also carry bigger load, therefore wavy structure can
The filler material completely wrapped up by waterproofing geomembrane is set to generate bigger anti-pressure ability and bending strength.
(6) upper base's material of the invention is mixed in specific proportions by gravel, stone, slag, clay and lime forms,
Under this ratio, can Shi Shang base obtain best using effect；During making upper base, appropriate spray water mist, the water
Lime slaking can be cured and improve base's degree of packing in expansion process by mist, while reduce the corruption of bottom lime in advance
Corrosion reduces the corrosion to waterproofing geomembrane, extends the service life of waterproofing geomembrane.
(7) present invention covers the braided fabric insulating layer of vapor pervious in upper base immediately after completing, until upper
Drying regime is restored substantially by base, and braided fabric insulating layer is utilized and delayed upper base's heat diffusion time, prevents base quick
Drop gently dried causes crackle to generate, and it is effective to have given full play to lime answering in upper base constructs, and reduces the production of micro-crack
It is raw, improve construction quality.
Detailed description of the invention
Fig. 1 is highway bridge structural schematic diagram of the invention；
Fig. 2 is the fit structure schematic diagram of stiffening plate of the invention；
Fig. 3 is the enlarged drawing of A in Fig. 2.
In figure: 1, soil matrix layer；2, base stabilization bar；301, the first sand bedding course；302, the second sand bedding course；4, lattice guest cage； 5,
Special-shaped waterproof enhancement layer；6, waterproofing geomembrane；7, stiffening plate；8, stabilized zone；9, upper base；10, surface layer.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below it is right
The present invention is further described.
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, a kind of highway bridge subgrade and pavement, including ground, have constructed soil matrix layer on ground
1, the base stabilization bar 2 that cuttage has diameter to be not more than 8cm in soil matrix layer 1, to avoid the excessive increase of 2 diameter of base stabilization bar to soil
The extruding of base 1, and then the case where cracked around base stabilization bar 2, base stabilization bar 2 is submerged completely in soil matrix layer 1
Then portion is laid with the first sand bedding course 301 on soil matrix layer 1, and has constructed lattice guest cage 4 on the first sand bedding course 301；Lattice guest cage 4
Interior to be filled with stone, the stone volume in lattice guest cage 4 is gradually increased around from 4 middle part of lattice guest cage, to realize lattice guest cage 4
The increase of middle part bulk density and the increase of peripheral clearance, increasing by 4 center bulk density of lattice guest cage, to can be improved lattice guest 4 stable gravity centers of cage qualitative,
The volume for increasing surrounding stone is conducive to the increase in stone gap around, to reduce the blocked risk of lattice guest cage 4, makes Ge Bin
Cage 4 keeps draining patency for a long time；It is laid with the second sand bedding course 302 above lattice guest cage 4, is laid with stabilized zone on the second sand bedding course 302
8, stabilized zone 8 includes special-shaped waterproof enhancement layer 5 and the soil of stablizing for being covered on special-shaped 5 periphery of waterproof enhancement layer, special-shaped waterproof enhancing
Layer 5 includes the waterproofing geomembrane 6 of filler material and sealed envelope in filler material periphery, is equipped with and reinforces inside special-shaped waterproof enhancement layer 5
Plate 7, the cross section of stiffening plate 7 are waveform, are connected with each other by way of buckling grafting between stiffening plate 7, are reinforced with improving
The transport of plate 7 and assembling flexibility, while guaranteeing the torque resistant performance between stiffening plate 7 using buckle structure, prevent 7 groups of stiffening plate
It is prone to compressive deformation to close the enhancement layer formed；It is equipped with upper base 9 above stabilized zone 8, gathers in upper base 9 in order to reduce water flow
Amount, the upper surface of upper base 9 are the arcuate structure of protrusion, and water is discharged in time by the arcuate structure of the protrusion can reduce water
Immersion to surface layer and the help to crack extesion；Upper base 9 by gravel, stone, slag, clay and lime mixture
Composition, in order to reach optimum structure performance, uses mass percent for 18:23 in gravel, stone, slag, clay and lime:
The ratio of 15:8:2 is deployed, and cement is built above upper base 9 or surface layer 10 that pitch structure is constructed.
A kind of highway bridge subgrade and pavement construction method, the steps include:
S1, soil matrix layer 1 is constructed on ground, in order to improve the anti-of soil matrix layer 1 on the basis of guaranteeing certain construction cost
It is aqueous can, compression strength and bulk density, the 37 lime earth of two to three one-tenth is admixed in soil matrix layer 1；In order to improve soil matrix layer 1 and ground
Attached property is led, base stabilization bar 2 is inserted into the soil matrix layer 1, the diameter of base stabilization bar 2 is not greater than 8cm, and cuttage spacing must not
It less than 3 square meters, is otherwise easy to crack soil matrix layer 1, reduces by 1 comprehensive performance of soil matrix layer, the effect of base stabilization bar 2 is similar
In bar planting, the entire compression anti-seismic performance of soil matrix layer 1 can be improved, conserve water and soil to a certain extent；It is anti-to soil matrix layer 1 later
Multiple levelling and compacting；Constantly wet base stabilization is needed when being also important to note that insertion base stabilization bar 2 when making soil matrix layer 1
On the one hand bar 2 improves the lubricity of base stabilization bar 2 with 1, soil matrix layer, on the other hand, base stabilization bar 2 will be all by water
Around the soil property enclosed is adhered to, attached performance is led in raising, has the function of preferably to conserve water and soil, due to metal surface can produce it is suitable
When rusty stain, therefore using metal base stabilization bar 2 when, the combination effect of rusty stain and soil property is more so；Soil matrix layer 1 it is paved when
Between poor summer be no longer than 5 hours, winter is no longer than 12 hours, otherwise, layering can be generated between soil matrix layer 1, which is using
In be easy by underground water invade and wash away expansions, influence 1 service life of soil matrix layer, and also need continuous spray water mist when production, spray
Leaching amount is suitably wet with soil matrix, and not at water flow subject to, on the one hand ensure that the viscous stickiness of soil matrix layer 1 by spray water mist, have
Conducive to the globality that soil matrix layer 1 is constructed, it on the other hand can be effectively reduced fugitive dust generation, protect construction environment；
S2, the first sand bedding course 301 being laid on soil matrix layer 1, the thickness of the first sand bedding course 301 is between 0.3m-0.5m, and
One sand bedding course, 301 thickness is too small to cause the first sand bedding course 301 to be difficult to support constructing for lattice guest cage 4, i.e., is used after a period of time
Afterwards, lattice guest cage 4 is directly born against on soil matrix layer 1, and the soil in soil matrix layer 1 turns over blocking lattice guest cage 4, leads to impeded drainage；Conversely,
When first sand bedding course, 301 thickness is excessive, the unstability of gravel structure will be obviously increased, and lattice guest cage 4 is caused to be easy in gravel
It is amesiality under phorogenesis, influence the stability that ground is constructed；Mistake of first sand bedding course 301 as lattice guest cage 4 and soil matrix layer 1
Layer is crossed, it is not soluble in water, there is preferable retentivity, therefore can make the material around lattice guest cage 4 that there is certain water penetration, prevents
Soil matrix layer 1 raises up under the drive of subsurface flow causes lattice guest cage 4 to block；
S3, lattice guest cage 4 is constructed on sand bedding course, fills stone in lattice guest cage 4, be laid with large scale stone in bottom first,
Then it is laid with small size stone at middle part, large scale stone is used around small size stone, and carry out using large scale stone
Covering forms the arrangement pattern that stone granularity is gradually increased from 4 center of lattice guest cage to surrounding, and the purpose being arranged so is: the
One, small size stone can be automatically replenished in the gap between the large scale stone of lower part, so that the whole center of gravity of lattice guest cage 4 is reduced, but
It is that the large scale stone on top will not be added to small size stone；Second, the small stone of granularity is arranged in the most middle part of lattice guest cage 4
It can reduce the gap between stone, for improving 4 center bulk density of lattice guest cage, stablize 4 center of gravity of lattice guest cage；Third, granularity is big
Stone is disposed adjacent to the position of lattice guest cage 4, for preventing peripheral gravel or dregs from blocking stone, causes the draining of lattice guest cage 4 not
Freely, and in order to prevent stone generates blocking inside lattice guest cage 4, and stone granularity is not less than 4 mesh, guarantees have most suitably between stone
Gap, thus most preferably balance lattice guest cage 4 water penetration and packed density；
S4, it is laid with the second sand bedding course 302 around lattice guest cage 4, and lattice guest is penetrated into a part of second sand bedding course 302 concussion
In cage 4, to guarantee the binder course density between 302 dative guest cage 4 of the second sand bedding course, the second sand bedding course 302 is collapsed after preventing,
On the other hand, the second sand bedding course 302 blocks lattice guest cage 4 in order to prevent, and the second sand bedding course 302 uses coarse sand, later to the second sand
Bed course 302 is levelling and is compacted；
S5, special-shaped waterproof enhancement layer 5, the production process of special-shaped waterproof enhancement layer 5 are laid with above the second sand bedding course 302
Are as follows: waterproofing geomembrane 6 is laid on the second sand bedding course 302 first, filler material is then constructed on waterproofing geomembrane 6, is filled
Material can use sandy soil, stone, soil, slag or its mixture, and stiffening plate 7 is arranged in the middle part of filler material, uses card between stiffening plate 7
The mode of button grafting is connected with each other, and then using waterproofing geomembrane 6 by filler material sealed envelope, 6 periphery of waterproofing geomembrane is utilized
To stablize soil covering, constitutes stabilized zone 8, the cross section of stiffening plate 7 and the cross section of special-shaped waterproof enhancement layer 5 are waveform, when
When special-shaped waterproof enhancement layer 5 is vertically rolled by load, the inclined-plane in waveform can will be converted the vertical pressure on the inclined-plane
For to the inclined-plane pressure at right angle with along inclined-plane extension direction extruding force comprehensive function, due to special-shaped waterproof enhancement layer 5
Anti-pressure ability is bigger than bend resistance ability, therefore wavy structure can be such that the filler material completely wrapped up by waterproofing geomembrane 6 produces
Raw bigger load supporting capacity, overcomes the problems, such as filler material flexible type, thus guarantee that subgrade and pavement is not pliable or cracks, by
Blind crack early period is largely because in the damage of later period highway bridge to wash away for a long time through underground water and lower infiltration surface water
Expansion cause, therefore at this reduce highway bridge cracking and collapse to extend highway bridge service life be of great significance；
Base 9 is equipped on S6, stabilized zone 8, the material of upper base 9 is by gravel, stone, slag, clay and lime
Mixture composition, wherein the mass percent of each component be 18:23:15:8:2, under this ratio can Shi Shang base 9 obtain most
Good using effect；During making upper base 9, appropriate 9 spray water mist of base upwards, the water mist can by lime slaking,
And then combined with the generation of remaining material, 9 degree of packing of base in raising, while weakening the corrosivity of bottom lime in advance, reduce stone
Corrosion of the ash to waterproofing geomembrane 6 extends the service life of waterproofing geomembrane 6；After completing immediately in upper base 9
The braided fabric insulating layer of vapor pervious is covered, until drying regime is restored substantially by upper base 9, braided fabric insulating layer can delay upper base
The 9 heat diffusion time of layer prevent 9 fast cooling of base and drying from crackle being caused to generate；
S7, surface layer 10 is made in the upper base 9, the surface layer 10 is cement concrete layer or bitumen layer, in order to drop
For low surface water in the resident of surface layer 10,10 lower part of surface layer increases hydrophobic material or the brushing hydrophobic coating in surface layer 10, and
The upper surface of upper base 9 is made to the arcuate structure of pico- protrusion, to improve drainage performance, reduces immersion of the water to surface layer, from
And water is avoided to also improve surface layer drying property to the widened help of crackle as far as possible, guarantee traffic safety.
Embodiment 2
On the basis of the other technologies scheme of embodiment 1 remains unchanged, special-shaped waterproof enhancement layer 5 is made as along highway
The S-type curved shape of the length direction of bridge, when subgrade and pavement generates fracture trend along its length, special-shaped waterproof increases
Strong layer 5 forms the support to subgrade and pavement transverse direction using its fold building along the inclined part of subgrade and pavement, to make roadbed
Road surface also has certain cracking resistance and bending resistance in the width direction.
Embodiment 3
On the basis of the other technologies scheme of embodiment 1 or 2 remains unchanged, adopt the following technical scheme that, it is steady in ground
Fixed pole 2 is made of stainless steel or engineering plastics, and Pig Iron Scrap is embedded on all sides, and Pig Iron Scrap bottom is equipped with downward cone
Shape protrusion, be inserted into base stabilization bar 2 when constantly to 2 spray water mist of base stabilization bar, after getting rusty to Pig Iron Scrap with soil property around
It is bonded together, forms agglomeration, further increase solid soil nature energy.
In the description of this patent, it is to be understood that term " on ", "lower", "left", "right", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside", "front", "rear", " clockwise ", " counterclockwise " is based on attached
Orientation or positional relationship shown in figure, is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this patent
Limitation.
In this patent unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be straight
Connect it is connected, can also be indirectly connected through an intermediary.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in this patent.
The basic principles, main features and advantages of the present invention have been shown and described above.This field it is common
Technical staff is it is to be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Changing and improving should all fall into claimed invention.The claimed scope of the invention is by appended claims and its waits
Effect object defines.
Claims (10)
1. a kind of highway bridge subgrade and pavement, it is characterised in that: including ground, soil matrix layer (1), the soil have been constructed on ground
Base (1) interior cuttage has base stabilization bar (2), and the base stabilization bar (2) is submerged in soil matrix layer (1), on the soil matrix layer (1)
It is laid with the first sand bedding course (301), and has constructed lattice guest cage (4) on the first sand bedding course (301), filling in the lattice guest cage (4)
There is stone, is laid with the second sand bedding course (302) above lattice guest cage (4), is laid with stabilized zone (8) on second sand bedding course (302), institute
Stabilized zone (8) are stated to include special-shaped waterproof enhancement layer (5) and be covered on the stable native of special-shaped waterproof enhancement layer (5) periphery, it is described different
Type waterproof enhancement layer (5) includes the waterproofing geomembrane (6) of filler material and sealed envelope in filler material periphery, special-shaped waterproof enhancement layer
(5) internal to be equipped with stiffening plate (7), the cross section of the stiffening plate (7) is waveform；Upper base is equipped with above the stabilized zone (8)
Layer (9), the upper base (9) are made of the mixture of gravel, stone, slag, clay and lime, have built above upper base (9)
Surface layer (10).
2. a kind of highway bridge subgrade and pavement according to claim 1, it is characterised in that: the stiffening plate (7) is along highway
The S-type extension of length direction.
3. a kind of highway bridge subgrade and pavement according to claim 2, it is characterised in that: lead between the stiffening plate (7)
The mode for crossing buckle grafting is connected with each other.
4. a kind of highway bridge subgrade and pavement according to claim 1, it is characterised in that: the stone being located in lattice guest cage (4)
Block product is gradually increased around from center.
5. a kind of highway bridge subgrade and pavement according to claim 1, it is characterised in that: the upper table of the upper base (9)
Face is the arcuate structure of protrusion.
6. a kind of highway bridge subgrade and pavement according to claim 1, it is characterised in that: the gravel, stone, slag,
The mass percent of clay and lime is 18:23:15:8:2.
7. a kind of highway bridge subgrade and pavement according to claim 1, it is characterised in that: the base stabilization bar (2)
Diameter is not more than 8cm.
8. a kind of highway bridge subgrade and pavement construction method, the steps include:
S1, soil matrix layer (1) is constructed on ground, wherein the 37 lime earth of two to three one-tenth is admixed, the insertion ground in the soil matrix layer (1)
Base stabiliser bar (2), repeatedly levelling to soil matrix layer (1) later and compacting；
S2, the first sand bedding course (301) are laid on soil matrix layer (1), the thickness of the first sand bedding course (301) is between 0.3m-0.5m；
S3, lattice guest cage (4) is constructed on the first sand bedding course, fill stone in lattice guest cage (4), be laid with large scale stone in bottom first
Then block is laid with small size stone at middle part, use large scale stone around small size stone, and using large scale stone into
Row covering forms the arrangement pattern that stone granularity is gradually increased from lattice guest cage (4) center to surrounding；
S4, the second sand bedding course (302) are laid with around lattice guest cage (4), and compacting levelling to the second sand bedding course (302)；
S5, it is laid with special-shaped waterproof enhancement layer (5) above the second sand bedding course (302), waterproofing geomembrane (6) is laid on the first
On two sand bedding courses (302), filler material is then constructed on waterproofing geomembrane (6), stiffening plate (7) are set in the middle part of filler material, and benefit
With waterproofing geomembrane (6) by filler material sealed envelope, waterproofing geomembrane (6) periphery constitutes stabilized zone using soil covering is stablized
(8), the cross section of stiffening plate (7) and the cross section of special-shaped waterproof enhancement layer (5) are waveform；
It is equipped with base (9) on S6, the stabilized zone (8), the material of the upper base (9) is by gravel, stone, slag, viscous
The mixture of soil and lime forms, and wherein the mass percent of each component is 18:23:15:8:2；
S7, surface layer (10) are made on the upper base (9), the surface layer (10) is cement concrete layer or bitumen layer.
9. a kind of highway bridge subgrade and pavement construction method according to claim 8, it is characterised in that: insertion base stabilization
It needs to keep ground stabiliser bar (2) surface wettability when bar (2).
10. a kind of highway bridge subgrade and pavement construction method according to claim 8, it is characterised in that: making upper base
During layer (9), appropriate spray water mist, base (9) moisture state in holding, and immediately in upper base after completing
(9) braided fabric insulating layer is covered on, until upper base (9) restore drying regime substantially.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU210563U1 (en) * | 2021-10-18 | 2022-04-21 | Вадим Васильевич Пассек | GABION-DIOD |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110543706B (en) * | 2019-08-21 | 2023-03-24 | 哈尔滨工业大学 | In-service bridge support damage diagnosis method based on vehicle braking effect |
| CN114164725B (en) * | 2021-12-22 | 2023-05-23 | 江西赣东路桥建设集团有限公司 | Road bridge subgrade pavement and construction method thereof |
| CN114808614B (en) * | 2022-04-14 | 2023-05-16 | 湖南文理学院 | Grid reinforced asphalt mixture bridge deck pavement equipment of concrete bridge |
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| JP2003321871A (en) * | 2002-04-30 | 2003-11-14 | Narimoto Miwa | Construction method for placing freshly-mixed concrete on steel plate surface |
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