CN112411294B - Construction method of highway asphalt pavement - Google Patents
Construction method of highway asphalt pavement Download PDFInfo
- Publication number
- CN112411294B CN112411294B CN202011336023.1A CN202011336023A CN112411294B CN 112411294 B CN112411294 B CN 112411294B CN 202011336023 A CN202011336023 A CN 202011336023A CN 112411294 B CN112411294 B CN 112411294B
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- pavement
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- 239000010426 asphalt Substances 0.000 title claims abstract description 58
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000010410 layer Substances 0.000 claims abstract description 130
- 239000004568 cement Substances 0.000 claims abstract description 58
- 239000012790 adhesive layer Substances 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 4
- 230000001681 protective effect Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 13
- 230000002349 favourable effect Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000013011 mating Effects 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
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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
- E01C11/00—Details of pavings
-
- 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
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The application relates to a construction method of a road asphalt pavement, which relates to the field of municipal engineering and comprises the following construction steps: s1, paving a cement base layer; s2, paving a bonding layer on the upper surface of the cement base layer; s3, manufacturing a prefabricated pavement unit; s4, laying and installing the prefabricated pavement units on the adhesive layer, and fixing the pavement units; s5, paving an asphalt layer on the pavement unit; the pavement unit comprises a slope precast block, a first horizontal precast block fixedly connected with the lower end of the slope precast block and a second horizontal precast block fixedly connected with the upper end of the slope precast block. This application can effectively improve the even effect of construction thickness of pitch pavement layer that has the slope.
Description
Technical Field
The application relates to the field of municipal engineering, in particular to a construction method of a road asphalt pavement.
Background
Currently, bituminous pavements refer to various types of pavements made by incorporating mineral materials with bituminous materials for paving. The asphalt binder improves the capability of the paving aggregate to resist damage of traveling vehicles and natural factors to the pavement, and enables the pavement to be smooth, less in dust, impermeable and durable.
The prior Chinese patent with the publication number of CN106868973A provides an asphalt pavement structure, which comprises a soil layer, wherein a subbase layer, a base layer, a connecting layer and a surface layer are sequentially paved above the soil layer. The surface layer is formed by laying an emulsified asphalt slurry seal layer and a rubber asphalt stress absorbing layer and is used for directly contacting with a travelling crane; the base layer is made of industrial waste residue composite concrete and is used for bearing gravity; the subbase layer is paved by cement stabilized macadam and macadam to assist in bearing gravity; thereby completing the laying of the asphalt pavement.
In view of the above-mentioned related art, the inventor believes that when an asphalt pavement layer is laid on a sloping roadbed, broken stones need to be laid on an underlayer, and the broken stones at the roadbed with high gradient roll off along the roadbed during construction, so that the underlayer below the roadbed is thin, and the thickness of the asphalt pavement layer is uneven.
Disclosure of Invention
In order to effectively improve the effect of uniform construction thickness of the asphalt pavement layer with the slope, the application provides a construction method of a highway asphalt pavement.
The construction method of the highway asphalt pavement provided by the application adopts the following technical scheme:
a construction method of a highway asphalt pavement comprises the following construction steps: s1, paving a cement base layer; s2, paving a bonding layer on the upper surface of the cement base layer; s3, manufacturing a prefabricated pavement unit; s4, laying and installing the prefabricated pavement units on the adhesive layer, and fixing the pavement units; s5, paving an asphalt layer on the pavement unit; the pavement unit comprises a slope precast block, a first horizontal precast block fixedly connected with the lower end of the slope precast block and a second horizontal precast block fixedly connected with the upper end of the slope precast block.
Through adopting above-mentioned technical scheme, when mating formation to the road surface that has the slope, adopt the polylith prefabricated section to splice the equipment, effectively reduce the possibility that causes the material landing of mating formation easily when mating formation, and the concatenation of prefabricated section can improve road surface laying's efficiency greatly. Through setting up the adhesive linkage, can improve the joint effect of prefabricated road surface unit and cement base course, strengthen road surface pavement's stability.
Preferably, the cement base layer is provided with a fixing component for connecting the pavement units; the fixing assembly comprises a fixing column group and a limiting sheet, wherein one end of the fixing column group is fixed in the cement base layer, and the limiting sheet is fixed on the outer side wall of the fixing column; the fixed column groups are arranged at intervals along the length direction of the cement base layer, and each fixed column group comprises two fixed columns which are arranged at intervals along the upper surface of the cement base layer and close to the positions on two sides; the cross section of the limiting piece is annular, and the axis of the limiting piece is superposed with the axis of the fixing column; positioning holes are formed in the slope prefabricated block, the first horizontal prefabricated block and the second horizontal prefabricated block; the limiting sheet is in inserting fit with the positioning hole, and the lower end face of the limiting sheet is attached to the upper surface of the bonding layer.
Through adopting the above technical scheme, set up fixed subassembly, can be convenient for be fixed in the cement-based layer with the road surface unit on, can carry out spacing fixed to the road surface unit through spacing piece, spacing piece and locating hole grafting cooperation, because leave the interval between the lateral wall of fixed column and the inside wall of locating hole, can add the bituminous layer material in the locating hole, further strengthen being connected between road surface unit and the fixed column, along the multiunit fixed column group that cement-based layer length direction interval set up, be favorable to improving being connected between road surface unit and the cement-based layer greatly.
Preferably, a baffle is connected between the two fixed columns of each group; the length direction of the baffle is consistent with the width direction of the cement base layer; fixing pieces are arranged on the two sides of the baffle close to the cement base layer; the fixing sheet is inserted on the fixing column; the upper end surface of the fixed sheet is rotatably connected with a fixed sleeve; the fixed sleeve is in threaded connection with the fixed column.
Through adopting above-mentioned technical scheme, set up the baffle between two fixed columns of every group, be favorable to laying the pitch layer for the material on pitch layer is difficult for taking place the landing when mating formation. Through pegging graft the stationary blade on the fixed column to through screwing up fixed cover, make fixed cover drive the up end of baffle and road surface unit and support tightly, thereby can make the baffle play the limiting displacement to the pitch layer, be convenient for fix a position the pitch layer and mat formation.
Preferably, the asphalt layer comprises a connecting layer paved between two adjacent baffles arranged along the length direction of the cement base layer and a pavement layer paved on the connecting layer.
Through adopting above-mentioned technical scheme, the articulamentum is favorable to improving the connection between bituminous layer and the road surface unit, and the pavement layer is favorable to satisfying bituminous paving's requirement.
Preferably, reinforcing components are arranged between the slope precast block and the first horizontal precast block and between the slope precast block and the second horizontal precast block; the reinforcing component comprises a supporting column which is fixed on the cement base layer and is in a hollow structure; the upper end of the supporting column is rotatably connected with a coaxially arranged adjusting sleeve; a threaded column is inserted in the supporting column and is in threaded connection with the adjusting sleeve; a placement groove is formed in the outer side wall of the support column and is close to the cement base layer; a plurality of the placing grooves are arranged at intervals along the circumferential direction of the supporting column; the lower end of the inserted bar is rotatably connected with the groove wall of the placement groove, and the lower end of the inserted bar, which is close to the inner side of the support column, is hinged with the threaded column; a first slot which is attached to the outer side wall of the supporting column is formed in the joint of the slope precast block and the first horizontal precast block; and a second slot which is attached to the outer side wall of the supporting column is formed at the joint of the slope precast block and the second horizontal precast block.
Through adopting above-mentioned technical scheme, set up and strengthen the subassembly, be favorable to improving being connected between road surface unit and the adhesive linkage, improve the fixed reliability of installation of road surface unit. After the adhesive layer is laid, the pavement unit is laid again, first horizontal prefabricated section and slope prefabricated section splice in back as an organic whole, first slot splice into a complete cavity on the first horizontal prefabricated section and on the prefabricated section of slope, the support column is pegged graft in this cavity, the adjusting collar is moved to rethread twisting, make the adjusting collar drive the direction of height rebound of screw thread post along the support column, the screw thread post drives inserted bar rebound, thereby can make the inserted bar keep away from the one end of settling tank and remove to the direction of keeping away from the support column, the inserted bar slope is pegged graft in the adhesive layer, the connection of reinforcement subassembly and adhesive layer has been improved, make difficult emergence skew on the horizontal direction between pavement unit and the adhesive layer.
Preferably, the slope precast block, the first horizontal precast block and the second horizontal precast block are all provided with a strip-shaped groove; two ends of the strip-shaped groove are respectively communicated with two adjacent positioning holes arranged along two sides of the cement base layer; the lower end face of the baffle is inserted into the strip-shaped groove.
Through adopting above-mentioned technical scheme, set up the bar groove, can improve the baffle and be fixed with being connected of road surface unit, when the asphalt layer on the upslope produced the glide force towards the downhill path, the baffle can support this section asphalt layer effectively and block for the difficult emergence skew of asphalt layer.
Preferably, the groove width of the strip-shaped groove is larger than the thickness of the baffle plate; one side of the baffle on the first horizontal precast block is abutted against one side of the strip-shaped groove far away from the slope precast block; one side of the baffle on the slope precast block is abutted against one side of the strip-shaped groove far away from the second horizontal precast block; one side of the baffle on the second horizontal precast block is abutted against one side of the strip-shaped groove close to the slope precast block.
Through adopting above-mentioned technical scheme, the groove width in bar groove is greater than the thickness of fender plate for the pitch layer can bond in the bar inslot, treats pitch layer shaping back, is favorable to strengthening the wholeness of road surface structure.
Preferably, a protection plate is arranged between two threaded columns oppositely arranged along two sides of the cement base layer; the length direction of the protection plate is consistent with the width direction of the cement base layer; positioning pieces are arranged at two ends of the protection plate; the positioning sheet is sleeved on the threaded column; the upper end surface of the positioning sheet is rotatably connected with a positioning sleeve; the locating sleeve is in threaded connection with the threaded column.
Through adopting above-mentioned technical scheme, set up the guard plate between first level prefabricated section and slope prefabricated section, be favorable to reducing the phenomenon of sliding on the pitch layer on the prefabricated section of slope, strengthen the wholeness on pitch layer. Set up the guard plate between slope prefabricated section and the horizontal prefabricated section of second, can reduce the asphalt layer on the horizontal prefabricated section of second and to the extrusion on the asphalt layer on the prefabricated section of slope, reduce the phenomenon that slides between the adjacent asphalt layer section, strengthen the wholeness that the asphalt layer laid.
Preferably, the protection plate is provided with a plurality of through holes.
Through adopting above-mentioned technical scheme, set up a plurality of through-holes on the guard plate, can communicate the asphalt layer that is located on the prefabricated section of slope and the asphalt layer that is located on the horizontal prefabricated section of first level to and can communicate the asphalt layer that is located on the prefabricated section of slope and the asphalt layer that is located on the horizontal prefabricated section of second, further improve the wholeness on whole asphalt layer, strengthen the connection between every section asphalt layer.
Preferably, the upper surface of the first horizontal precast block and the position close to the slope precast block and the upper surface of the second horizontal precast block and the position close to the slope precast block are both provided with a first limit groove; a second limiting groove is formed in the upper surface of the slope precast block and is close to the first limiting groove; the first limiting groove is communicated with the second limiting groove; the lower end face of the protection plate close to the first horizontal precast block is inserted into the first limiting groove and is abutted against one side of the first limiting groove far away from the slope precast block; the lower end face of the protection plate close to the second horizontal precast block is inserted into the second limiting groove and is abutted against one side, away from the second horizontal precast block, of the second limiting groove.
By adopting the technical scheme, the first limiting groove and the second limiting groove are arranged, so that the fixing effect on the lower end of the protection plate can be improved, and the asphalt layer on the slope precast block is prevented from sliding due to the extrusion of the asphalt layer on the second horizontal precast block on the asphalt layer on the slope precast block; the asphalt layer on the slope precast block can be reduced to slide and extrude the protection plate, so that the protection plate is bent and damaged, and the protection strength of the protection plate is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
when a road surface with a slope is paved, a plurality of precast blocks are adopted for splicing and assembling, so that the possibility that paving materials easily slide off during paving is effectively reduced, and the efficiency of paving the road surface can be greatly improved by splicing the precast blocks;
the fixing component is arranged, so that the pavement unit can be conveniently fixed on the cement base layer, the pavement unit can be limited and fixed through the limiting piece, the limiting piece is in inserting fit with the positioning hole, and as a gap is reserved between the outer side wall of the fixing column and the inner side wall of the positioning hole, an asphalt layer material can be added into the positioning hole, the connection between the pavement unit and the fixing column is further enhanced, and the multiple groups of fixing column groups are arranged at intervals along the length direction of the cement base layer, so that the connection between the pavement unit and the cement base layer is greatly improved;
set up the baffle between two fixed columns of every group, be favorable to laying the pitch layer for the material on pitch layer is difficult for taking place the landing when mating formation.
Drawings
Fig. 1 is a schematic structural diagram of a fixing assembly according to an embodiment of the present application.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a schematic structural view of a road surface unit according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of the embodiment of the present application after two asphalt layers are hidden.
Description of reference numerals: 1. a cement base layer; 2. a fixing assembly; 21. fixing a column; 22. a limiting sheet; 3. a reinforcement assembly; 31. a support pillar; 311. a placing groove; 32. an adjusting sleeve; 33. a threaded post; 34. inserting a rod; 4. a bonding layer; 5. a pavement unit; 51. a first horizontal preform block; 511. positioning holes; 52. a slope precast block; 53. a second horizontal preform block; 54. a strip-shaped groove; 55. a first limit groove; 56. a second limit groove; 57. a first slot; 58. a second slot; 59. a groove; 6. a baffle plate; 61. connecting holes; 62. a fixing sheet; 63. fixing a sleeve; 7. a protection plate; 71. a through hole; 72. positioning plates; 73. a positioning sleeve; 8. an asphalt layer; 81. a connecting layer; 82. and (6) a road surface layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a construction method of a highway asphalt pavement. Referring to fig. 1, a construction method of a road asphalt pavement includes the following construction steps:
s1, cleaning the road surface to keep the road surface in a flat state, paving a cement base layer 1 on the road surface, marking the upper surface of the cement base layer 1 along lime powder sprayed on the cement base layer 1 before the cement base layer 1 is not solidified and molded, dividing the road surface with slope into three sections, and fixedly installing a fixing component 2 and a reinforcing component 3 in the cement base layer 1 according to the divided sections.
Referring to fig. 1, fixed subassembly 2 includes fixed column 21 group and spacing piece 22, and fixed column 21 group is provided with the multiunit along cement base 1's length direction interval, and every fixed column 21 of group all includes two fixed columns 21, and these two fixed column 21 intervals set up in cement base 1 upper surface, and two fixed columns 21 are respectively and are close to the position of cement base 1 both sides. The lower end of the fixing column 21 is vertically inserted into the cement base layer 1. The cross-section of spacing piece 22 is the annular, and the axis of spacing piece 22 and the axis coincidence of fixed column 21, and spacing piece 22 is fixed to be welded on fixed column 21.
Referring to fig. 1 and 2, the reinforcing assembly 3 includes a supporting column 31, an adjusting sleeve 32 and a threaded column 33, the lower end surface of the supporting column 31 is inserted and fixed on the cement base layer 1, the supporting column 31 is of a hollow structure, and an upper end opening of the supporting column 31 is arranged. The axis of the adjusting sleeve 32 coincides with the axis of the supporting column 31, and the lower end of the adjusting sleeve 32 is rotatably connected with the upper end of the supporting column 31. The threaded column 33 is inserted into the support column 31, and the threaded column 33 is in threaded connection with the adjusting sleeve 32 at a position close to the upper end. The outer side wall of support column 31 and the position that is close to cement-based layer 1 have seted up arrangement groove 311, arrangement groove 311 is provided with a plurality ofly along the circumference interval of support column 31, the rotation of arrangement groove 311 is connected with inserted bar 34, the lower extreme of inserted bar 34 rotates with the cell wall of arrangement groove 311 and is connected, the lower extreme of inserted bar 34 just is close to the inboard position of support column 31 and is articulated with threaded post 33, can drive the rotation of inserted bar 34 through the lift of threaded post 33, the height of arrangement groove 311 is greater than the length of inserted bar 34, can make inserted bar 34 at the rotation of arrangement groove 311 and connect.
Referring to fig. 2, S2, lay tie coat 4 on cement base 1, the upper surface of tie coat is the leveling condition, the tie coat is asphalt concrete layer material, before the tie coat is the solidification shaping, twist adjusting collar 32, make adjusting collar 32 drive screw post 33 rise along the direction of height of support column 31, screw post 33 drives the lower extreme of inserted bar 34 and upwards moves, thereby the upper end that drives inserted bar 34 struts to the direction of keeping away from support column 31, peg graft in the tie coat, increase and the area of contact of tie coat, improve the joint strength to the tie coat.
Referring to fig. 3 and 4, S3, a prefabricated pavement unit 5 is manufactured, the pavement unit 5 comprises a slope prefabricated block 52, a first horizontal prefabricated block 51 fixedly connected with the lower end of the slope prefabricated block 52 and a second horizontal prefabricated block 53 fixedly connected with the upper end of the slope prefabricated block 52, and the pavement unit 5 is formed by pouring and solidifying concrete in a mold. Positioning holes 511 are formed in the slope prefabricated section 52, the first horizontal prefabricated section 51 and the second horizontal prefabricated section 53, the limiting piece 22 is in inserting fit with the positioning holes 511, and the lower end face of the limiting piece 22 is attached to the upper surface of the bonding layer. The slope prefabricated section 52, the first horizontal prefabricated section 51 and the second horizontal prefabricated section 53 are all provided with strip-shaped grooves 54, and two ends of each strip-shaped groove 54 are respectively communicated with two adjacent positioning holes 511 arranged along two sides of the cement-based layer 1. First limiting grooves 55 are formed in the positions, close to the slope precast block 52, of the upper surface of the first horizontal precast block 51 and the positions, close to the slope precast block 52, of the upper surface of the second horizontal precast block 53, and the length direction of each first limiting groove 55 is perpendicular to the length direction of the cement base layer 1. The upper surface of the slope precast block 52 and the position close to the first limit groove 55 are provided with a second limit groove 56, the length direction of the second limit groove 56 is consistent with the length direction of the first limit groove 55, and the first limit groove 55 and the second limit groove 56 which are correspondingly arranged on the pavement unit 5 are communicated. The first slot 57 is opened at the joint of the slope precast block 52 and the first horizontal precast block 51, the second slot 58 is opened at the joint of the slope precast block 52 and the second horizontal precast block 53, the first slot 57 comprises two first half slots with semicircular cross sections, one first half slot is opened on the first horizontal precast block 51, and the other first half slot is opened on the slope precast block 52.
Referring to fig. 3, at S4, the prefabricated road surface units 5 are laid and mounted on the adhesive layer, and the road surface units 5 are fixed.
Referring to fig. 3 and 4, a baffle 6 is connected between the two fixing columns 21 of each group, the cross section of the baffle 6 in the vertical direction is wavy, a plurality of connecting holes 61 are formed in the baffle 6, and the length direction of the baffle 6 is perpendicular to the length direction of the cement base layer 1. Both sides that baffle 6 is close to cement base 1 all are fixed with stationary blade 62, and the up end of stationary blade 62 rotates and is connected with fixed cover 63, attacks the internal thread on the fixed cover 63 inside wall. Insert the stationary blade 62 on fixed column 21, and through screwing up fixed cover 63, make the lower terminal surface of baffle 6 peg graft in bar groove 54, and the groove width of bar groove 54 is greater than the thickness of baffle 6, make baffle 6 one side on the first horizontal prefabricated section 51 and one side butt that the slope prefabricated section 52 was kept away from to bar groove 54, the one side butt that second horizontal prefabricated section 53 was kept away from to baffle 6 one side on the slope prefabricated section 52 and bar groove 54, baffle 6 one side on the second horizontal prefabricated section 53 and bar groove 54 are close to slope prefabricated section 52 one side butt, pack the bonding layer material in bar groove 54, can further improve the fixed effect of baffle 6.
Referring to fig. 3 and 4, a protection plate 7 is installed between two opposite threaded columns 33 arranged on two sides of the cement base layer 1, the cross section of the protection plate 7 in the vertical direction is wavy, a plurality of through holes 71 are formed in the protection plate 7, and the length direction of the protection plate 7 is perpendicular to the length direction of the cement base layer 1. The two ends of the protection plate 7 are both fixed with positioning pieces 72, and the upper end surfaces of the positioning pieces 72 are rotatably connected with positioning sleeves 73. Sleeving the positioning sheet 72 on the threaded column 33, and screwing down the positioning sleeve 73, so that the lower end surface of the protection plate 7 close to the first horizontal precast block 51 is inserted into the first limiting groove 55, and one side of the protection plate 7 is abutted against one side of the first limiting groove 55 far away from the slope precast block 52; the lower end surface of the protection plate 7 close to the second horizontal precast block 53 is inserted into the second limiting groove 56, and one side of the protection plate 7 is abutted against one side of the second limiting groove 56 far away from the second horizontal precast block 53. And the first limiting groove 55 and the second limiting groove 56 are filled with bonding layer materials, so that the connection strength between the protection plate 7 and the pavement unit 5 is enhanced.
Referring to fig. 4, S5, an asphalt layer 8 is laid on the pavement unit 5, and the asphalt layer 8 includes a connection layer 81 laid between two adjacent barriers 6 arranged along the length direction of the cement base layer 1 and a pavement layer 82 laid on the connection layer 81. The connection layer 81 is made of a material formed by mixing clay and asphalt, and the connection strength between the whole asphalt layer 8 and the pavement unit 5 can be effectively improved. The pavement layer 82 is made of asphalt material, so that the pavement surface is smooth and firm.
Referring to fig. 4, in order to strengthen the connection between the asphalt layer 8 and the pavement unit 5, a plurality of grooves 59 are formed in the upper end surface of the pavement unit 5, so that the lower end surface of the asphalt layer 8 is uneven, and the asphalt layer 8 is not easy to deviate after being molded.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The construction method of the road asphalt pavement is characterized by comprising the following construction steps:
s1, paving a cement base layer (1);
s2, paving a bonding layer (4) on the upper surface of the cement base layer (1);
s3, manufacturing a prefabricated pavement unit (5);
s4, laying and installing the prefabricated pavement units (5) on the adhesive layer, and fixing the pavement units (5);
s5, paving an asphalt layer (8) on the pavement unit (5);
the pavement unit (5) comprises a slope precast block (52), a first horizontal precast block (51) fixedly connected with the lower end of the slope precast block (52) and a second horizontal precast block (53) fixedly connected with the upper end of the slope precast block (52), and a fixing component (2) used for connecting the pavement unit (5) is arranged on the cement base layer (1); the fixing component (2) comprises a fixing column (21) group with one end fixed in the cement base layer (1) and a limiting piece (22) fixed on the outer side wall of the fixing column (21); a plurality of fixing column (21) groups are arranged at intervals along the length direction of the cement base layer (1), and each fixing column (21) group comprises two fixing columns (21) which are arranged at intervals along the upper surface of the cement base layer (1) and close to the positions on two sides; the cross section of the limiting sheet (22) is annular, and the axis of the limiting sheet (22) is superposed with the axis of the fixing column (21); positioning holes (511) are formed in the slope prefabricated block (52), the first horizontal prefabricated block (51) and the second horizontal prefabricated block (53); the limiting sheet (22) is in inserting fit with the positioning hole (511), and the lower end face of the limiting sheet (22) is attached to the upper surface of the bonding layer.
2. A method for constructing a road asphalt pavement according to claim 1, wherein a baffle (6) is connected between the two fixing posts (21) of each set; the length direction of the baffle (6) is consistent with the width direction of the cement base layer (1); fixing sheets (62) are arranged on the two sides of the baffle (6) close to the cement base layer (1); the fixing piece (62) is inserted into the fixing column (21); the upper end surface of the fixed sheet (62) is rotatably connected with a fixed sleeve (63); the fixed sleeve (63) is in threaded connection with the fixed column (21).
3. The method for constructing an asphalt pavement for a highway according to claim 1, wherein the asphalt layer (8) comprises a connection layer (81) laid between two adjacent baffles (6) arranged along the length direction of the cement-based layer (1) and a pavement layer (82) laid on the connection layer (81).
4. The construction method of the asphalt pavement of the highway according to claim 1, wherein a reinforcement assembly (3) is arranged between the slope precast block (52) and the first horizontal precast block (51) and between the slope precast block (52) and the second horizontal precast block (53); the reinforcing component (3) comprises a supporting column (31) which is fixed on the cement base layer (1) and is of a hollow structure; the upper end of the supporting column (31) is rotatably connected with a coaxially arranged adjusting sleeve (32); a threaded column (33) is inserted into the supporting column (31), and the threaded column (33) is in threaded connection with the adjusting sleeve (32); a placing groove (311) is formed in the position, close to the cement base layer (1), of the outer side wall of the supporting column (31); a plurality of the arrangement grooves (311) are arranged at intervals along the circumferential direction of the support column (31); the lower end of the inserted bar (34) is rotatably connected with the groove wall of the placement groove (311), and the position, close to the inner side of the support column (31), of the lower end of the inserted bar (34) is hinged with the threaded column (33); a first slot (57) attached to the outer side wall of the supporting column (31) is formed in the joint of the slope precast block (52) and the first horizontal precast block (51); and a second slot (58) attached to the outer side wall of the supporting column (31) is formed at the joint of the slope precast block (52) and the second horizontal precast block (53).
5. The construction method of the road asphalt pavement according to claim 2, wherein the slope precast block (52), the first horizontal precast block (51) and the second horizontal precast block (53) are all provided with a strip-shaped groove (54); two ends of the strip-shaped groove (54) are respectively communicated with two adjacent positioning holes (511) arranged along two sides of the cement base layer (1); the lower end face of the baffle (6) is inserted into the strip-shaped groove (54).
6. The construction method of a road asphalt pavement according to claim 5, wherein the width of the strip-shaped groove (54) is larger than the thickness of the baffle (6); one side of a baffle (6) on the first horizontal precast block (51) is abutted against one side of the strip-shaped groove (54) far away from the slope precast block (52); one side of a baffle (6) on the slope precast block (52) is abutted against one side of the strip-shaped groove (54) far away from the second horizontal precast block (53); one side of a baffle (6) on the second horizontal precast block (53) is abutted against one side of the strip-shaped groove (54) close to the slope precast block (52).
7. The method for constructing a road asphalt pavement according to claim 4, wherein a protective plate (7) is provided between two threaded columns (33) oppositely provided along both sides of the cement-based layer (1); the length direction of the protection plate (7) is consistent with the width direction of the cement base layer (1); positioning pieces (72) are arranged at two ends of the protection plate (7); the positioning sheet (72) is sleeved on the threaded column (33); the upper end surface of the positioning sheet (72) is rotatably connected with a positioning sleeve (73); the positioning sleeve (73) is in threaded connection with the threaded column (33).
8. A method for constructing a bituminous pavement for roads according to claim 7, characterized in that said protective plate (7) is provided with a plurality of through holes (71).
9. The construction method of the asphalt pavement of the highway according to claim 8, wherein the upper surface of the first horizontal precast block (51) near the slope precast block (52) and the upper surface of the second horizontal precast block (53) near the slope precast block (52) are both provided with a first limit groove (55); a second limit groove (56) is formed in the upper surface of the slope precast block (52) and is close to the first limit groove (55); the first limiting groove (55) is communicated with the second limiting groove (56); the lower end face of the protection plate (7) close to the first horizontal precast block (51) is inserted into the first limiting groove (55) and is abutted against one side, far away from the slope precast block (52), of the first limiting groove (55); the lower end face of the protection plate (7) close to the second horizontal precast block (53) is inserted into the second limiting groove (56) and is abutted against one side, far away from the second horizontal precast block (53), of the second limiting groove (56).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011336023.1A CN112411294B (en) | 2020-11-25 | 2020-11-25 | Construction method of highway asphalt pavement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011336023.1A CN112411294B (en) | 2020-11-25 | 2020-11-25 | Construction method of highway asphalt pavement |
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| CN112411294B true CN112411294B (en) | 2022-04-01 |
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| CN1062940A (en) * | 1990-04-30 | 1992-07-22 | 王世杰 | Method of constructing roadway |
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| CN103422410A (en) * | 2013-08-28 | 2013-12-04 | 杭州中港建设工程有限公司 | Construction method for additionally laying concrete precast slabs on airport pavement without suspending aviation service |
| CN107366207A (en) * | 2017-09-13 | 2017-11-21 | 江苏通余建设工程有限公司 | One kind has acclive blacktop and its construction method |
| US20200190785A1 (en) * | 2018-12-14 | 2020-06-18 | Stormtrap Llc | Module and assembly for underground management of fluids for shallow-depth applications |
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2020
- 2020-11-25 CN CN202011336023.1A patent/CN112411294B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062940A (en) * | 1990-04-30 | 1992-07-22 | 王世杰 | Method of constructing roadway |
| CN2620716Y (en) * | 2003-03-21 | 2004-06-16 | 王丹 | Spreading prefab |
| CN103422410A (en) * | 2013-08-28 | 2013-12-04 | 杭州中港建设工程有限公司 | Construction method for additionally laying concrete precast slabs on airport pavement without suspending aviation service |
| CN107366207A (en) * | 2017-09-13 | 2017-11-21 | 江苏通余建设工程有限公司 | One kind has acclive blacktop and its construction method |
| US20200190785A1 (en) * | 2018-12-14 | 2020-06-18 | Stormtrap Llc | Module and assembly for underground management of fluids for shallow-depth applications |
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| CN112411294A (en) | 2021-02-26 |
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Effective date of registration: 20240131 Address after: 511400, No.12-102, First Industrial Second Street, Hengjiang Village, Shatou Street, Panyu District, Guangzhou City, Guangdong Province Patentee after: Guangdong Luhua Asphalt Engineering Co.,Ltd. Guo jiahuodiqu after: Zhong Guo Address before: Room 901, 9 / F, building B, Xiangfeng Creative Park, intersection of Xiangzhang Avenue and Hongfeng Road, high tech Zone, Hefei City, Anhui Province 230000 Patentee before: Anhui Century Foundation Construction Engineering Co.,Ltd. Guo jiahuodiqu before: Zhong Guo |
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