The construction method of the dedusting draining macrovoid bituminous paving containing graded broken stone composite bed
Technical field
The invention belongs to field of road, particularly relate to the construction method of a kind of dedusting draining macrovoid bituminous paving containing graded broken stone composite bed, be mainly used in the dedusting of clear hole, draining and the snow removing etc. of macrovoid bituminous paving.
Background technology
Macrovoid bituminous paving has superior draining and anti-acoustic capability.But macrovoid bituminous paving is in use due to its macroporous feature, clay, greasy dirt and rubber grain etc. very easily enter pore interior and then blocking hole.Rainy day and fine day alternately and repeatedly accelerate this blocking.During the rainy day, intrapore dust, silt etc. blocks material and enters ground surface material depths along rainwater;Tamper scutum knot during fine day, bonding together with gathering materials, add on low speed links that pumping effect is notable and the through trip compaction to structural material, chocking-up degree is increasingly severe, dewatering and noise reduction performance significantly decays, and also has a strong impact on the life-span of macrovoid bituminous paving simultaneously.
For the cleaning of macrovoid bituminous paving, adopting following two method at present more:
One, adopt vacuum absorption dust arrester, utilize negative pressure minute dust to be adsorbed onto in dust arrester, but the method for negative-pressure adsorption is poor for bigger dust or aggregate chips dust removing effects;
Two, high pressure water washing road surface is utilized to coordinate brute force to scrub to reach the effect of dedusting, its part dust that can remove road surface or aggregate chips, but dust and aggregate chips for road depths not only can not be removed totally, by high pressure water flushing to the deeper of road, can cause even more serious consequence on the contrary;
Three, high pressure rinse and vac sorb combine, and a kind of porous pavement cleaning Vehicle disclosed in Chinese patent literature ZL204530582U, its work process is first to wash away ground with water under high pressure, the silt of pervious bed is washed away for mud by water;Afterwards, utilize big flow, high negative pressure blower fan by sucker, the slime water of pervious bed surface sewage and depths to be drawn in sewage storehouse, be used for cleaning pervious bed.But actually the degree of depth of its flushing is still inadequate, meanwhile, powerful scrubbing more destroys road surface overall structure, makes road surface entirety antiskid impaired performance, affects the safety of road.
Summary of the invention
The present invention is for avoiding the weak point existing for above-mentioned prior art, the construction method of a kind of dedusting draining macrovoid bituminous paving containing graded broken stone composite bed is provided, to having efficient recovery and keep dewatering and noise reduction and the anti-slide performance of macrovoid bituminous paving, extend the service life on road surface.
The present invention solves that technical problem adopts the following technical scheme that
The construction method of the present invention dedusting draining macrovoid bituminous paving containing graded broken stone composite bed, is characterized in: the described dedusting draining macrovoid bituminous paving containing graded broken stone composite bed is followed successively by cutting optimal, middle surface layer, water-proof crack-resistant layer, dedusting composite bed and upper layer from bottom to top;Described dedusting composite bed is to be embedded with dust arrester in graded broken stone fixed layer;Described dust arrester is the dedusting pipeline being arranged in graded broken stone fixed layer in grid, offers through hole on the tube wall of described dedusting pipeline;One end of described dedusting pipeline arranges external gas source or external water source, described external gas source or external water source can carry out backwash from bottom to top to described upper layer by the through hole on dedusting pipeline;Or negative pressure device is connected in one end of described dedusting pipeline, utilize described negative pressure device can the infiltration in described upper layer to be aspirated by the through hole on dedusting pipeline;
In described road surface, dust arrester is constituted with auxiliary pipe by being responsible for, and described supervisor lays along road width direction, and two exhausting holes that supervisor's tube wall is offered along supervisor's length direction are spray-hole;Described auxiliary pipe offers two exhausting holes along road longitudinally laying, auxiliary tube wall along auxiliary length of tube direction, and wherein an exhausting hole is spray-hole, and another exhausting hole is osculum;Described supervisor and auxiliary pipe are in the sustained height plane of road, and are interconnected at the site position place of grid;
The construction method of the described dedusting draining macrovoid bituminous paving containing graded broken stone composite bed is first to complete the construction of basic unit on bed course, carries out paving and compacting of cutting optimal and middle surface layer subsequently;Paving and after compacting completes at described cutting optimal and middle surface layer, continues construction as follows:
Step 1: at the surface construction water-proof crack-resistant layer 3 of middle surface layer;
Step 2: at the surface of supervisor and auxiliary pipe one layer of water-soluble film of parcel, and supervisor and auxiliary pipe are assembled by the position set, bail is utilized to be fixed on water-proof crack-resistant layer by the supervisor and auxiliary pipe that complete assembling, supervisor and auxiliary pipe are blocked in the top of bail, the bottom of bail vertically snaps in middle surface layer through water-proof crack-resistant layer, then seals the intersection of bail and water-proof crack-resistant layer with SBS modified emulsifying asphalt;
Step 3: on water-proof crack-resistant layer, according to the spacing between the tire of rubber tire paver both sides, first face, two wheelmark rubble roads of Manual, the width in face, described rubble road is not less than the tyre width of rubber tire paver, the end face in face, rubble road is slightly above the end face of supervisor and auxiliary pipe, rubber tire paver paves along face, rubble road graded broken stone fixed layer, after graded broken stone fixed layer paving and leveling with and watering, keep the seepage rate of the graded broken stone in graded broken stone fixed layer less than set seepage rate ± 2%;
Step 4: adopt vibrating roller that graded broken stone fixed layer is rolled, until no longer there is wheel vestige in roller compaction process in road surface, heavy road roller is adopted to roll subsequently, until the compactness of graded broken stone fixed layer is not less than the 90% of the compactness of middle surface layer, the upper layer of making macrovoid bituminous paving subsequently;
Step 5: after maintenance of surface completes, first water flowing in supervisor and auxiliary pipe, makes water-soluble film dissolve, can pass through subsequently.
The feature of the construction method of the present invention dedusting draining macrovoid bituminous paving containing graded broken stone composite bed lies also in: the spacing between adjacent supervisor and between adjacent auxiliary pipe is 8cm~12cm.
The feature of the construction method of the present invention dedusting draining macrovoid bituminous paving containing graded broken stone composite bed lies also in:
On described supervisor and auxiliary pipe, the aperture of each through hole is 2~3mm, and in same exhausting hole, the spacing between adjacent through-holes is 12~15mm;
The axis of upper two exhausting holes of described supervisor projection line on the transverse section of supervisor is opening upwards, opening angle is the " V " shape of 30 °~90 °, and the axis of two exhausting holes line centered by vertical curve is mirror symmetry;
The axis of two exhausting holes projection line on the transverse section of auxiliary pipe to be opening upwards, opening angle the be " V " shape of 90 °~135 ° on described auxiliary pipe, wherein the axis of osculum is parallel to the crown slope of middle surface layer, and osculum aperture is towards Intermediate Gray.
The feature of the construction method of the present invention dedusting draining macrovoid bituminous paving containing graded broken stone composite bed lies also in: arrange water cell in the side of described macrovoid bituminous paving, collecting-tank in described water cell is connected with described dedusting pipeline by water-supply-pipe, and accessing in described water-supply-pipe has water pump;Sedimentation tank in described water cell is connected with described dedusting pipeline by drain pipe, and accessing in described drain pipe has negative pressure device;Sedimentation tank catchments through collecting by filtration in collecting-tank, described sedimentation tank arranges removable filter layer, described water-supply-pipe arranges by-pass port.
The feature of the construction method of the present invention dedusting draining macrovoid bituminous paving containing graded broken stone composite bed lies also in: described dust arrester is along road direction subsection setup, every section of dust arrester is identical with road width on width, and the length along road direction is 50~80m;Every section of dust arrester is independently equipped with water cell.
The feature of the construction method of the present invention dedusting draining macrovoid bituminous paving containing graded broken stone composite bed lies also in: described upper layer is porous asphalt surface layer, and the voidage of described mixture surface course is not less than 18%, thickness is not less than 50mm;Described graded broken stone fixed layer adopts granule close to the graded broken stone of square, and the particle size range of rubble is 13.2mm~19mm, and the voidage of graded broken stone is not less than 25%, and the thickness of graded broken stone fixed layer is at least the twice of the maximum particle of crushed stone;Described water-proof crack-resistant layer adopts SBS modified emulsifying asphalt.
Compared with the prior art, the present invention has the beneficial effect that:
1, in the present invention, road surface is to arrange dedusting composite bed in macrovoid bituminous paving, the injection that water under high pressure, gas are mutual is produced by dust arrester is internal from road surface, form back-flushing structure, the dust being blocked in road surface hole is cleaned to road surface, clean up again, can effectively recover and keep dewatering and noise reduction and the anti-slide performance of macrovoid bituminous paving, extend the service life on road surface.
2, the present invention is when construction graded rubble fixed layer; first face, two wheelmark rubble roads of Manual; both ensure that the normal table of rubber tire paver was walked, protected again pvc pipe net, and overcome graded broken stone fixed layer and pave the even damaged problem of uneven, pvc pipe net displacement.
3, the present invention shifts to an earlier date coated water-soluble thin film can effectively avoid spray-hole and osculum to block in the construction time supervisor and auxiliary tube-surface.
4, the present invention arranges graded broken stone and forms graded broken stone fixed layer, it is possible not only to prevent spray-hole and osculum from blocking in the construction time, it is also prevented from supervisor and laterally or longitudinally displacement occurs auxiliary pipe, ensure the ability of dust arrester dedusting, draining, the network structure that supervisor and auxiliary pipe are formed simultaneously also strengthens graded broken stone layer, the two is constraint mutually, it is ensured that the steadiness of graded broken stone fixed layer and reliability.
5, in road surface of the present invention, dust arrester is possible not only to injection water under high pressure and high pressure gas, negative-pressure vacuum can also be passed through, accelerating the excretion of rainwater, rainwater is collected among captation by being responsible for auxiliary pipe, and the water in water cell can also recycle the dedusting in road surface through diafiltration and precipitation.And when storing in hydropenic situation, it is possible to carried out the supply of the water yield by by-pass port, by-pass port is also the input port of high pressure gas simultaneously.
6, the present invention adapts to multiple weather, of many uses.When summer high temperature, it is possible to spray water by dust arrester and reduce the bulk temperature on road surface, reduce the impact of urban heat land effect, it is possible to effectively reduce the rut because road surface high temperature causes;In the winter having accumulated snow, it is possible to spray Snow Agent solution by dust arrester, improve pavement snow melting efficiency;Road surface water suction can being accelerated when heavy showers, thus improving traffic safety, and reducing the infringement of road pavement.
7, the present invention is according to different situations, adopts different operations, saves substantial amounts of device resource and human resources, the every pavement performance coordinating significantly more efficient maintenance road surface of operational approach, makes driving condition optimization.
Accompanying drawing explanation
Fig. 1 is road structure sectional schematic diagram in the present invention;
Fig. 2 a is ejector charge path schematic diagram of the present invention;
Fig. 2 b is the auxiliary pipe inspection path schematic diagram of the present invention;
Fig. 3 is water drain flow path schematic diagram in the present invention;
Fig. 4 is dust arrester schematic diagram in the present invention;
Fig. 5 a is supervisor's schematic diagram in the present invention;
Fig. 5 b is auxiliary pipe schematic diagram in the present invention;
Fig. 6 is water cell structural representation in the present invention;
Number in the figure: 1 upper layer, 3 water-proof crack-resistant layers, surface layer in 4,5 cutting optimal, 6 osculums, 7 dust arresters, 7a is responsible for, the auxiliary pipe of 7b, 8 graded broken stone fixed layer, 9 water cell, 10 spray-holes, 11 filter layers, 12 sedimentation tanks, 13 collecting-tanks, 14 water pumps, 15 negative pressure devices, 16 by-pass ports, 17 Intermediate Grays, 18 basic units, 19 bed courses.
Detailed description of the invention
Referring to Fig. 1, in the present embodiment, the version of dedusting draining macrovoid bituminous paving containing graded broken stone composite bed is: arranges pavement structure and is followed successively by cutting optimal 5, middle surface layer 4, water-proof crack-resistant layer 3, dedusting composite bed and upper layer 1 from bottom to top, water-proof crack-resistant layer can stop road surface current to penetrate into middle surface layer and below, and current flow to the both sides of road along water-proof crack-resistant layer;Dedusting composite bed is to be embedded with dust arrester 7 in graded broken stone fixed layer 8;Dust arrester 7 is the dedusting pipeline being arranged in graded broken stone fixed layer 8 in grid, and dust arrester and graded broken stone fixed layer are in same plane, mutually suppress, and improves the globality of dedusting composite bed, offers through hole on the tube wall of dedusting pipeline.
As it is shown in figure 1, arrange external gas source or external water source, external gas source or external water source upper layer 1 can be carried out backwash from bottom to top in one end of dedusting pipeline by the through hole on dedusting pipeline;Or negative pressure device is connected in one end of dedusting pipeline, utilize negative pressure device can the infiltration in upper layer 1 to be aspirated by the through hole on dedusting pipeline.
As shown in Figure 4, dust arrester 7 is made up of supervisor 7a and auxiliary pipe 7b, and supervisor 7a lays along road width direction, and auxiliary pipe 7b longitudinally lays along road.Dust arrester step-by-step arrangement, is independent of each other between every section, and one section of damage therein, other one section of dust arrester still can normally use.
As shown in Figure 5 a, two exhausting holes offered along supervisor's length direction on the tube wall of supervisor 7a are spray-hole 10;As shown in Figure 5 b, offering two exhausting holes on the tube wall of auxiliary pipe 7b along auxiliary length of tube direction, wherein an exhausting hole is spray-hole 10, and another exhausting hole is osculum 6;Supervisor 7a and auxiliary pipe 7b adopts the high-strength pipe of PVC, and supervisor 7a and auxiliary pipe 7b is in the sustained height plane of road, and is interconnected at the site position place of grid, and the spacing between adjacent supervisor 7a and between adjacent auxiliary pipe 7b is 8cm~12cm;On supervisor 7a and auxiliary pipe 7b, the aperture of each through hole is 2~3mm, and in same exhausting hole, the spacing between adjacent through-holes is 12~15mm.
As shown in Figure 2 a, the axis of supervisor's upper two exhausting holes of 7a projection line on the transverse section being responsible for 7a is opening upwards, opening angle is the " V " shape of 30 °~90 °, and the axis of two exhausting holes line centered by vertical curve is mirror symmetry;As shown in Figure 2 b, the axis of upper two exhausting holes of auxiliary pipe 7b projection line on the transverse section of auxiliary pipe 7b is opening upwards, opening angle is the " V " shape of 90 °~135 °, wherein the axis of osculum 6 is parallel to the crown slope of middle surface layer 4, osculum aperture is towards Intermediate Gray 17, the crown slope of middle surface layer 4 refers to the upper surface of middle surface layer, the horizontal section on road camber and road surface, central authorities are higher than both sides, being the shape that arches upward with certain slope, the crown slope of middle surface layer refers to the cross fall of the horizontal section of middle surface layer.
As shown in figures 1 to 6, arranging water cell 9 in the present embodiment in the side of macrovoid bituminous paving, the collecting-tank 13 in water cell 9 is connected with dedusting pipeline by water-supply-pipe, and accessing in water-supply-pipe has water pump 14;Sedimentation tank 12 in water cell 9 is connected with dedusting pipeline by drain pipe, and accessing in drain pipe has negative pressure device 15;Sedimentation tank 12 catchments through collecting by filtration in collecting-tank 13, sedimentation tank 12 arranges removable filter layer 11, water-supply-pipe arranges by-pass port 16.Still can regarding water source recycling through collecting by filtration the water in collecting-tank 13, removable filter layer 11 effectively reduces the impurity of water in collecting-tank 13, and prevents from blocking the service life extending water cell 9.By-pass port 16 both can as the input connector of high pressure gas, when water shortage in collecting-tank 13, it is also possible to as the input connector at external water source.
In being embodied as, dust arrester 7 is along road direction subsection setup, and every section of dust arrester is identical with road width on width, and the length along road direction is 50~80m;Every section of dust arrester is independently equipped with water cell 9;Upper layer 1 is porous asphalt surface layer, and the voidage of mixture surface course is not less than 18%, thickness is not less than 50mm;Graded broken stone fixed layer 8 adopts granule close to the graded broken stone of square, refer to that Aspect Ratio is 1:1~1:1.5 close to square, the particle size range of rubble is 13.2mm~19mm, the voidage of graded broken stone is not less than 25%, the infiltration ability that can make road surface reaches maximum, can improving the infiltration efficiency of upper layer, the thickness of graded broken stone fixed layer 8 is at least the twice of the maximum particle of crushed stone;Water-proof crack-resistant layer 3 adopts SBS modified emulsifying asphalt.
In the present embodiment, the construction method of dedusting draining macrovoid bituminous paving containing graded broken stone composite bed is first to complete the construction of basic unit 18 on bed course 19, carries out paving and compacting of cutting optimal 5 and middle surface layer 4 subsequently;The paving and after compacting completes of layer 5 and middle surface layer 4 below, continues construction as follows:
Step 1: at the surface construction water-proof crack-resistant layer 3 of middle surface layer 4;
Step 2, surface one layer of water-soluble film of parcel at supervisor 7a and auxiliary pipe 7b, and supervisor 7a and auxiliary pipe 7b is assembled by the position set, bail is utilized to be fixed on water-proof crack-resistant layer 3 by the supervisor 7a and auxiliary pipe 7b that complete assembling, supervisor 7a and auxiliary pipe 7b is blocked on the top of bail, the bottom of bail vertically snaps in middle surface layer 4 through water-proof crack-resistant layer 3, bail makes dust arrester be fixed on water-proof crack-resistant layer, it is effectively prevented, when filling making graded broken stone fixed layer, large-scale change in displacement occurs, the intersection of bail and water-proof crack-resistant layer is sealed again with SBS modified emulsifying asphalt, improve the sealing of water-proof crack-resistant layer;
Step 3: on water-proof crack-resistant layer 3, according to the spacing between the tire of rubber tire paver both sides, first face, two wheelmark rubble roads of Manual, the width in face, rubble road is not less than the tyre width of rubber tire paver, it is made to be enough to provide rubber tire paver normally to travel required track, the end face in face, rubble road is slightly above the end face of supervisor and auxiliary pipe, rubber tire paver paves along face, rubble road graded broken stone fixed layer 8, after graded broken stone fixed layer 8 paving and leveling with and watering, keep the seepage rate of the graded broken stone in graded broken stone fixed layer 8 less than set seepage rate ± 2%;
Step 4: adopt vibrating roller that graded broken stone fixed layer 8 is rolled, until no longer there is wheel vestige in roller compaction process in road surface, heavy road roller is adopted to roll subsequently, until the compactness of graded broken stone fixed layer 8 is not less than the 90% of the compactness of middle surface layer 4, the upper layer 1 of making macrovoid bituminous paving subsequently;
Step 5: after maintenance of surface completes, first water flowing in supervisor 7a and auxiliary pipe 7b, makes water-soluble film dissolve, and the osculum of dust arrester and spray-hole keep unimpeded, it is possible to can pass through subsequently.
In the present embodiment, the maintaining method containing the dedusting of graded broken stone composite bed, draining macrovoid bituminous paving is to arrange mode of operation one and mode of operation two, wherein:
Mode of operation one: first with external water source by dedusting pipeline water spray 3~5min, irrigation pressure is 4bar~5bar;Followed by external gas source by dedusting pipeline jet 30~60s, whiff pressure is 3bar~4bar.
Mode of operation two: first with external water source by dedusting pipeline water spray 2~3min, irrigation pressure is 4bar~5bar;Followed by external gas source by dedusting pipeline jet 30~60s, whiff pressure is 3bar~4bar, again through dedusting water pipe line spraying road cleanout fluid.
Two kinds of mode of operations are applied by following different modes:
Application one, road surface general maintenance: complete once-through operation by mode of operation one.The frequency ratio of general maintenance is relatively frequent, so the voidage maintenance on road surface is better, it does not have serious stopping state, it is only necessary to keep voidage.
Application two, the regular working service in road surface: detection obtains the current voidage of upper layer 1, then space, road surface plugging rate ncFor:
ncCurrent voidage/the Design Air Voids of=1-;
Because general maintenance can not keep the voidage on road surface completely, it is possible to there will be blocking in various degree, therefore firstly the need of the current voidage turning core sampling understanding road surface, carry out different operations for different chocking-up degrees.
If ncLess than 10%, illustrate that general maintenance does better, it does not have serious blocking, normal maintenance voidage.Once-through operation is completed by mode of operation one;
If ncBeing 10%~20%, slightly block, clear hole can recover road surface voidage several times repeatedly.First operation is continuously repeated 2~3 times by mode of operation one, finally cleaning pavement particles thing;
If ncIt is 20%~30%, moderate blocks, normal aqueous vapor cross through hole can not well recover voidage, now need to add Street surface cleaning liquid, chemical property for tamper carries out carrying out through hole again after decomposition etc. acts on, first complete once-through operation by mode of operation two, then complete once-through operation by mode of operation one, with and cleaning pavement particles thing;Operation is continuously repeated 2~3 times again, finally cleaning pavement particles thing by mode of operation one;
If ncMore than 30%, first complete once-through operation by mode of operation two, then continuously repeat operation twice by mode of operation one, with and cleaning pavement particles thing;Finally utilize external gas source to pass through dedusting pipeline and continue jet with the pressure of 2bar~3bar, coordinate Street surface cleaning car to carry out road surface negative pressure cleaning simultaneously, negative pressure cleaning refers to and utilizes the existing cleaning Vehicle with negative pressure device, while blowing from inside, top, road surface utilizes road cleaning vehicle to carry out negative pressure cleaning, can significantly more efficient removing tamper with inside and outside common cooperation
The maintaining method of the present embodiment dedusting draining macrovoid bituminous paving containing graded broken stone composite bed is to apply by diverse ways for different weather conditions:
When summer high temperature is dry: by dedusting pipeline, water is sprayed to road surface, increases road moisture, reduce the temperature of road table, slow down the impact of urban heat land effect, reduce road surface airborne dust, enhance the visibility on road surface;
When Snow Thickness is less than 2cm, by dedusting pipeline by the Snow Agent spray solution of uniform temperature to road surface, it is possible to effectively prevent the generation of thicker accumulated snow, Snow Agent preferably selects environment-friendly snowmelt agent, the less snow melt pollution to environment, when pavement snow melting, start negative pressure device, and by the snow water of dedusting pipeline suction road surface thawing, temperature is time below freezing, can also be ventilated by cleaning shaft, keep the dry of road surface, it is prevented that harm icy on road;
When heavy showers: start negative pressure device, and by dedusting pipeline suction surface gathered water, accelerate road surface drainage, the crucial moment that now still water cell is catchmented.