CN108677715A - 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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- CN108677715A CN108677715A CN201810537602.9A CN201810537602A CN108677715A CN 108677715 A CN108677715 A CN 108677715A CN 201810537602 A CN201810537602 A CN 201810537602A CN 108677715 A CN108677715 A CN 108677715A
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- sand bedding
- stone
- bedding course
- soil matrix
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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
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 ground, soil matrix layer, the first sand bedding course, the second sand bedding course, stabilized zone, the upper base's knead dough layer constructed successively, construction method includes the following steps：Soil matrix layer is constructed on ground, and base stabilization bar is inserted into the soil matrix layer, the first sand bedding course is laid on soil matrix, constructs lattice guest cage on sand bedding course, be laid with the second sand bedding course around lattice guest's cage, be laid with special-shaped waterproof enhancement layer on the second sand bedding course, special-shaped waterproof enhancement layer is carried out shaping and supported using reinforcing plate, is equipped with upper base 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 corrugated 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 the anti-pressure ability and bending strength of bigger.
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 technology
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, face layer caused by highway crackle is surface cracking or is collapsed due to upper base
It oozes under the reason of cracking, and base is caused to collapse typically surface water or is penetrated into caused by upper base from side；And wave
Hole be typically 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 flow to highway is divided into two major classes, and one is opposite Ceng Heshang bases are oozed under surface water
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 flow to ground of ground
It is superimposed, aggravates roadbed significantly and damage progress, 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 seepage failure of the flow to highway, people take a variety of control methods, have developed different types of
Road structure.For example, the patent for the pavement structure and its construction method that an entitled roadbed layering is wrapped entirely, 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；Its while improving the bearing capacity and stability of roadbed, blocked roadbed bearing layer with it is outer
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 ensureing 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 preventing the effect that above-mentioned waveform rises and falls；Second, by roadbed and upper by the way of wrapping up entirely
The mode of base's package is unfavorable for roadbed and fully sinks, the abundant region of underground water water content, 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 also checking in an entitled comprehensive waterproof enhances the pavement structure of roadbed and its patent document of construction method, 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 ensure the water content control of roadbed material, roadbed is made to 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, face layer is just very easy to the destruction rolled repeatedly by vehicle, generates road
Face is cracked and wave cheats equivalent damage.
It is urgent in order to preferably solve common quality problems, the people such as highway bridge road surface is susceptible to 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.
Invention content
1, it to solve the problems, such as
The problem of being susceptible to crackle, wave hole for the highway bridge road surface that prior art construction makes, the present invention carries
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 the problem of road surface is easy to be 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, described to have constructed soil matrix layer on ground, skewer in the soil matrix layer
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
It has constructed lattice guest's cage on sand bedding course, stone is filled in the lattice guest cage, be laid with the second sand bedding course 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 in 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
Enhancement layer is internally provided with reinforcing plate, and the cross section of the reinforcing 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, and face layer has been built above upper base.
Preferably, length direction S-type extension of the reinforcing plate along highway.
Preferably, it is connected with each other by way of buckling grafting between the reinforcing plate.
The stone volume being preferably located in lattice guest's cage gradually increases 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, step are：
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, stone is filled 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, formed stone granularity from lattice guest's cage center to around gradually increased arrangement pattern；
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 reinforcing plate is set in the middle part of filler material, and will be filled using waterproofing geomembrane
Expect that sealed envelope, waterproofing geomembrane periphery are covered using soil is stablized, constitute stabilized zone, the cross section of reinforcing 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, the wherein mass percent of each component are 18：23：15：8：2；
S7, face layer is made in the upper base, the face 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, advantageous effect
Compared with the prior art, beneficial effects of the present invention are：
(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 bases, either 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, these above-mentioned problems can be avoided in a manner of dredging for blocking up by using, in order to mitigate underground
Water by when to the blocking of ground and wash away equal side effects, use 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 using the base stabilization bar for not being shorter than ground base in soil matrix layer, improves soil matrix layer
Effect with the attached property of leading of ground, base stabilization bar is similar to bar planting, can improve the entire compression anti-seismic performance of soil matrix layer,
It conserves water and soil to a certain extent.
(3) present invention to be inserted into base stabilization bar soil matrix layer and cover base stabilization bar soil matrix layer between making 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 unit weight, 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 the possibility of gravel or dregs blocking lattice guest's cage can be reduced, it is long-term to keep lattice guest
Cage draining is unobstructed.
(5) it is corrugated special-shaped waterproof enhancement layer that the present invention, which is provided with cross section, and corrugated 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 the bending moment of bigger, can also carry the load of bigger, therefore corrugated structure can
Make anti-pressure ability and bending strength that bigger is generated by the filler material that waterproofing geomembrane completely wraps up.
(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 bases 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.
Description of the drawings
Fig. 1 is the highway bridge structural schematic diagram of the present invention；
Fig. 2 is the fit structure schematic diagram of the reinforcing plate of the present 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, reinforcing plate；8, stabilized zone；9, upper base；10, face layer.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, below it is right
The present invention is expanded on further.
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, in soil matrix layer 1 cuttage have the base stabilization bar 2 that diameter is not more than 8cm, 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 being located in lattice guest cage 4 gradually increases around from 4 middle part of lattice guest cage, to realize lattice guest cage 4
The increase of middle part unit weight and the increase of peripheral clearance, increasing by 4 center unit weight of lattice guest cage, can to improve 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；4 top of lattice guest cage is laid with the second sand bedding course 302, and stabilized zone is laid on the second sand bedding course 302
8, stabilized zone 8 includes special-shaped waterproof enhancement layer 5 and is covered in the soil of stablizing of 5 periphery of special-shaped waterproof enhancement layer, special-shaped waterproof enhancing
Layer 5 includes the waterproofing geomembrane 6 of filler material and sealed envelope in filler material periphery, and special-shaped waterproof enhancement layer 5 is internally provided with reinforcement
The cross section of plate 7, reinforcing plate 7 is waveform, is connected with each other by way of buckling grafting between reinforcing plate 7, is reinforced with improving
Plate 7 transports and assembling flexibility, while ensureing the torque resistant performance between reinforcing plate 7 using buckle structure, prevents 7 groups of reinforcing plate
It is prone to compressive deformation to close the enhancement layer formed；The top of stabilized zone 8 is equipped with upper base 9, gathers in upper base 9 in order to reduce 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
The immersion of opposite 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 in gravel, stone, slag, clay and lime：23：
15：8：2 ratio is allocated, the face layer 10 that upper base builds 9 top cement or pitch structure is constructed.
A kind of highway bridge subgrade and pavement construction method, step are：
S1, soil matrix layer 1 is constructed on ground, in order to improve the anti-of soil matrix layer 1 on the basis of ensureing certain construction cost
It is aqueous can, compression strength and unit weight, 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 that soil matrix layer 1 is made to crack, 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, is conserved water and soil to a certain extent；It is anti-to soil matrix layer 1 later
Multiple levelling and compacting；It is also important to note that the when of being inserted into base stabilization bar 2 needs constantly moistening base stabilization when making soil matrix layer 1
On the one hand bar 2 improves the lubricity of base stabilization bar 2 and 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 generate 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 is will produce 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 continuous spray water mist is also needed to when making, spray
Leaching amount is suitably moistened with soil matrix, and not at flow subject to, on the one hand the viscous stickiness of soil matrix layer 1 ensure that by spray water mist, have
Conducive to the globality that soil matrix layer 1 is constructed, airborne dust generation on the other hand can be effectively reduced, construction environment is protected；
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., through using 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, which turns over, blocks lattice guest cage 4, leads to impeded drainage；Conversely,
When first sand bedding course, 301 thickness is excessive, the unstability of gravel structure will obviously increase, 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, stone is filled 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 stone granularity from 4 center of lattice guest cage to around gradually increased arrangement pattern, the purpose being arranged so are：The
One, small size stone can be automatically replenished in the gap between the large scale stone of lower part, to reduce the whole center of gravity of lattice guest cage 4, but
Small size stone will not be added to by being the large scale stone on top；Second, the small stone of granularity is arranged in the most middle part of lattice guest cage 4
The gap between stone can be reduced, for improving 4 center unit weight of lattice guest cage, stablizes 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, ensures have most suitably between stone
Gap, to the water penetration and packed density of most preferably balance lattice guest cage 4；
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 ensure the binder course density between 302 dative guest cage 4 of the second sand bedding course, the second sand bedding course 302 collapses 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
For：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 reinforcing plate 7 is arranged in the middle part of filler material, card is used between reinforcing plate 7
The mode of button grafting is connected with each other, and then utilizes waterproofing geomembrane 6 by filler material sealed envelope, and 6 periphery of waterproofing geomembrane utilizes
To stablize soil covering, constitutes stabilized zone 8, the cross section of reinforcing 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 convert 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 corrugated structure can make the filler material production completely wrapped up by waterproofing geomembrane 6
The load supporting capacity of raw bigger, overcomes the problems, such as filler material flexible type, to ensure that subgrade and pavement is not pliable or cracks, by
In later stage highway bridge damage be largely because early period blind crack through underground water and under ooze surface water and wash away for a long time
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 forms, and wherein the mass percent of each component is 18：23：15：8：2, under this ratio can Shi Shang bases 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 generate and combine with 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, face layer 10 is made in the upper base 9, the face layer 10 is cement concrete layer or bitumen layer, in order to drop
Low surface water is resident face layer 10, and face 10 lower part of layer increase hydrophobic material or the brushing hydrophobic coating on face layer 10, and
The upper surface of upper base 9 is made to the arcuate structure of pico- protrusion, to improve drainage performance, reduces the immersion of water opposite layer, from
And water is avoided to also improve face layer drying property to the widened help of crackle as far as possible, ensure 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 shape of the S-type bending of 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 along the inclined part of subgrade and pavement using its fold building, 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 the embedded Pig Iron Scrap on all sides, Pig Iron Scrap bottom are equipped with downward cone
Shape protrusion, constantly to 2 spray water mist of base stabilization bar when being inserted into base stabilization bar 2, wait for after Pig Iron Scrap gets rusty with soil property around
It is bonded together, forms caking, further increase solid soil nature energy.
In the description of this patent, it is to be understood that term "upper", "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 indicates or imply and is signified
Device or element must have a particular orientation, with specific azimuth configuration and operation, 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；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：It is described that soil matrix layer (1), institute have been constructed on ground including ground
Stating soil matrix layer (1) interior cuttage has base stabilization bar (2), the base stabilization bar (2) to submerge in soil matrix layer (1), the soil matrix layer
(1) it is laid with the first sand bedding course (301) on, and has constructed lattice guest cage (4) on the first sand bedding course (301), in the lattice guest cage (4)
Filled with stone, it is laid with the second sand bedding course (302) above lattice guest cage (4), stabilized zone is laid on second sand bedding course (302)
(8), the stabilized zone (8) including special-shaped waterproof enhancement layer (5) and is covered in the stable native of special-shaped waterproof enhancement layer (5) periphery,
The abnormal shape 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) is internally provided with reinforcing plate (7), and the cross section of the reinforcing plate (7) is waveform；It is set above the stabilized zone (8)
You Shang bases (9), the upper base (9) is made of the mixture of gravel, stone, slag, clay and lime, on upper base (9)
Face layer (10) is built in side.
2. a kind of highway bridge subgrade and pavement according to claim 1, it is characterised in that：The reinforcing 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 reinforcing 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：Stone in lattice guest cage (4)
Block product gradually increases 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, step are：
S1, soil matrix layer (1) is constructed on ground, in admix the 37 lime earths of two to three one-tenth, ground is inserted into the soil matrix layer (1)
Stabiliser bar (2), repeatedly levelling to soil matrix layer (1) later and compacting；
S2, the first sand bedding course (301) is 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 sand bedding course, stone is filled 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, formed stone granularity from lattice guest cage (4) center to around gradually increased arrangement pattern；
S4, the second sand bedding course (302), and compacting levelling to the second sand bedding course (302) are laid with around lattice guest cage (4)；
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), and reinforcing plate (7), and profit are set in the middle part of filler material
With waterproofing geomembrane (6) by filler material sealed envelope, waterproofing geomembrane (6) periphery is covered using soil is stablized, and constitutes stabilized zone
(8), the cross section of reinforcing 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, face layer (10) is made on the upper base (9), the face 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：It is inserted into 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 holdings, and completing later immediately in upper base
(9) braided fabric insulating layer is covered on, until drying regime is restored substantially by upper base (9).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110543706A (en) * | 2019-08-21 | 2019-12-06 | 哈尔滨工业大学 | In-service bridge support damage diagnosis method based on vehicle braking effect |
| CN114164725A (en) * | 2021-12-22 | 2022-03-11 | 江西赣东路桥建设集团有限公司 | Highway bridge roadbed pavement and construction method thereof |
| CN114808614A (en) * | 2022-04-14 | 2022-07-29 | 湖南文理学院 | Grid adds muscle bituminous mixture bridge floor pavement equipment of concrete bridge |
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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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