CN113463458A - Stable road structure and construction method thereof - Google Patents
Stable road structure and construction method thereof Download PDFInfo
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- CN113463458A CN113463458A CN202110892595.6A CN202110892595A CN113463458A CN 113463458 A CN113463458 A CN 113463458A CN 202110892595 A CN202110892595 A CN 202110892595A CN 113463458 A CN113463458 A CN 113463458A
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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
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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
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
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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
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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
- E01C7/325—Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses
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Abstract
The utility model belongs to the technical field of road construction and specifically relates to a stable road structure and construction method thereof has solved that the steel reinforcement framework structure is complicated, and is comparatively loaded down with trivial details when tying up the shaping and when pouring the layer structure of vibrating to steel reinforcement framework, influences the problem of the efficiency of construction of road, and it includes basic unit and the surface course of laying in proper order by supreme down, the basic unit includes upper strata and lower basic unit, the surface course includes upper strata and lower surface course, a plurality of support columns have been buried underground jointly in upper strata and the lower basic unit. This application has when guaranteeing road inlayer structural strength, improves the effect of the efficiency of laying of road.
Description
Technical Field
The application relates to the field of road construction, in particular to a stable road structure and a construction method thereof.
Background
In the current road construction, a multilayer structure is paved on a roadbed by adopting different materials in sequence so as to transmit and diffuse the stress on the road surface layer by layer, thereby ensuring the stable structure and uniform stress of the road and avoiding deformation caused by extrusion.
The gap of the layer structure with a compact and compact structure in the road is small, the thermal expansion coefficient is large, and the layer structure is easy to break due to expansion with heat and contraction with cold when influenced by high temperature or low temperature, so that in the middle layer of the road, a framework tied up by steel bars is often adopted as a connecting structure to improve the cohesive force of the inner layer structure of the road and reduce the probability of the road breaking due to temperature change.
Aiming at the related technologies, the inventor thinks that the defects that the steel bar framework structure is complex, the binding forming and the pouring of the vibration layer structure to the steel bar framework are complicated, and the construction efficiency of the road is influenced exist.
Disclosure of Invention
In order to improve the paving efficiency of a road while ensuring the strength of an inner layer structure of the road, the application provides a stable road structure and a construction method thereof.
In a first aspect, the present application provides a stable road structure, which adopts the following technical solution:
the utility model provides a stable road structure, includes by lower supreme basic unit and the surface course of laying in proper order, the basic unit includes upper base layer and lower basic unit, the surface course includes upper surface layer and lower surface layer, a plurality of support columns have been buried underground jointly in upper base layer and the lower basic unit.
Through adopting above-mentioned technical scheme, the horizontal force that tire and road surface friction produced when having made things convenient for the upper strata to bear vehicle driving and the vacuum suction that the rear produced, and transmit vertical stress to the road bed to lower successive layer, the road has made things convenient for the support of vehicle driving, through burying a plurality of support columns underground in upper basic unit and lower basic unit, the quick of having made things convenient for in-base layer connection structure is laid, the cohesion of upper basic unit and lower basic unit and the support of support column to the basic unit have been strengthened, the structural strength and the rigidity of basic unit have been improved, prevent that the basic unit from breaking and collapsing in the use.
Optionally, a metal inner core is arranged in the supporting column.
Through adopting above-mentioned technical scheme, improved the support intensity of support column, further improved the supporting role of support column to the basic unit.
Optionally, a plurality of the support columns are all obliquely arranged, and every two adjacent support columns are all in tabling fit.
Through adopting above-mentioned technical scheme, made things convenient for mutual spacing and the support of a plurality of support columns, further improved the supporting role and the cohesion of support column to the basic unit.
Optionally, heat insulation layers are laid below the lower base layer and above the upper base layer in a close fit manner.
Through adopting above-mentioned technical scheme, improved the heat preservation performance of upper basic unit and lower basic unit, prevent that fracture or frost heaving's phenomenon from appearing in upper basic unit and lower basic unit under high temperature or low temperature influence, guaranteed the stability of upper basic unit and lower basic unit.
Optionally, a dense cushion layer mixed with a thermal insulation material is laid below the lower base layer.
Through adopting above-mentioned technical scheme, made things convenient for closely knit bed course to separate road bed and basic unit, prevented that the water in the road bed from permeating the basic unit, also made things convenient for the discharge of the water in the closely knit bed course, and guaranteed the high low temperature stability of closely knit bed course, reduced basic unit and closely knit bed course and taken place the probability of frost heaving phenomenon at low temperature after intaking.
Optionally, a permeable cushion layer made of a permeable material is laid below the dense cushion layer.
Through adopting above-mentioned technical scheme, made things convenient for the bed course that permeates water further with groundwater and reverse osmosis water absorption to and the bed course that permeates water is to the emission of water, ensure that the basic unit is in dry or moderate wet state, prevent that the basic unit from corroding the slump because of the infiltration.
Optionally, a reverse osmosis layer is laid below the permeable cushion layer.
Through adopting above-mentioned technical scheme, prevent that the roadbed soil of the bed course below of permeating water from upwards extruding into the clearance of the bed course of permeating water, make and produce the space between bed course and the road bed of permeating water, cause the layer structure unstability, improved the stability of the bed course of permeating water.
Optionally, the upper base layer, the lower base layer, the compact cushion layer and the permeable cushion layer extend to two sides along the width direction to form a trapezoid.
Through adopting above-mentioned technical scheme, made things convenient for the successive layer transmission dispersion of vertical stress from top to bottom, prevented that layer structure from collapsing to both sides, and then caused the damage of road surface inner structure.
Optionally, the bracing piece is worn to be equipped with in closely knit bed course reaches the equal slope of bed course both sides that permeate water, closely knit bed course reaches the bed course both sides that permeate water are hugged closely jointly and are provided with massive protective edge, the bracing piece top is worn to locate correspondingly in the protective edge, upper strata, lower bed course both sides are all hugged closely jointly and are provided with massive curb.
Through adopting above-mentioned technical scheme, made things convenient for the protection limit to the support of basic unit, closely knit bed course and the bed course that permeates water to and the curb blocks upper surface layer and lower surface course, further prevents that the layer structure from collapsing to both sides, has guaranteed the stability on road surface.
In a second aspect, the present application provides a construction method of a stable road structure, which adopts the following technical scheme: a method of constructing a stabilized road structure using a stabilized road structure as claimed in any one of claims 1 to 9, comprising the steps of:
step1, cleaning a section of roadbed surface of the road to be paved, so that the roadbed surface does not contain impurities and is in a dry or wet state;
step2, laying a reverse osmosis layer such as geotextile on the roadbed to prevent roadbed soil from extruding into the upper permeable cushion layer, laying the permeable cushion layer above the reverse osmosis layer by using loose granular permeable materials such as gravel, broken stone and the like as local materials, absorbing redundant water in the roadbed, preventing underground water from upwards reversely permeating into the base layer, and compacting the laid permeable cushion layer;
step3, paving and compacting the compact cushion layer on the permeable cushion layer by adopting a mixture of compact materials such as cement, lime coal cinder and the like and heat-insulating materials such as polyphenyl particles, light ceramsite, vitrified micro-bead mortar and the like, further absorbing the upward-permeated underground water and preventing the upward permeation of the underground water;
step4, shaping the two sides of the compact cushion layer and the permeable cushion layer to form a layer structure with a trapezoidal section, inserting a plurality of support rods into the two sides of the compact cushion layer and the permeable cushion layer in an inclined manner to expose the top ends of the support rods outside the compact cushion layer or the permeable cushion layer, laying protective edges on the two sides of the compact cushion layer and the permeable cushion layer together by adopting concrete, fixing the top ends of the support rods in the protective edges, ensuring the stability of the compact cushion layer and the permeable cushion layer and preventing the compact cushion layer and the permeable cushion layer from scattering to the two sides;
step5, paving a heat-insulating layer such as a polystyrene board above the compact cushion layer, placing a plurality of rows of support columns above the heat-insulating layer to enable two adjacent support columns of each row to be embedded and connected, paving a lower base layer above the heat-insulating layer by using on-site gravel and concrete, paving an upper base layer above the lower base layer by using gravel and concrete, covering the support columns, compacting the upper base layer and the lower base layer, and paving a heat-insulating layer above the upper base layer;
step6, paving a lower surface layer above the heat insulation layer by adopting asphalt concrete, paving an upper surface layer above the lower surface layer by adopting asphalt mastic macadam mixture or asphalt concrete, paving a layer of seal mineral aggregate on the upper surface layer, compacting the upper surface layer and the lower surface layer, and then maintaining the surface of the upper surface layer, such as removing floating mineral aggregate on the surface of the upper surface layer, scattering seal mineral aggregate on the oil spill part, and repairing the damaged part;
step7, shaping the upper base layer, the lower base layer, the upper surface layer and the lower surface layer, so that the upper base layer and the lower base layer form a layer structure with a trapezoidal section, each side of the width of the lower cushion layer is at least 25cm wider than the width of the lower base layer, each side of the width of the lower base layer is at least 2cm wider than the width of the lower surface layer, and the two sides of the upper base layer, the lower base layer, the upper surface layer and the lower surface layer are jointly paved with concrete or block stones in a clinging manner, so that the pavement of a section of road is completed.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the upper layer bears horizontal force generated by friction between tires and a road surface when a vehicle runs and vacuum suction force generated behind the tires and transmits vertical stress to the roadbed downwards layer by layer, so that the running vehicle is supported by a road conveniently;
2. the compact cushion layer and the permeable cushion layer are arranged below the base layer, so that the base layer and the roadbed can be conveniently separated, water in the roadbed can be prevented from entering the base layer to cause erosion collapse or frost heaving of the base layer, and the stability of the base layer is ensured;
3. through all setting up the heat preservation from top to bottom at the basic unit, mix insulation material in closely knit bed course, strengthened the thermal insulation performance of basic unit and closely knit bed course, prevent that basic unit or closely knit bed course from taking place inflation or fracture when high low temperature, improved road layer structure's stability.
Drawings
Fig. 1 is a schematic structural diagram of a stable road structure according to an embodiment of the present application.
Figure 2 is a cross-sectional view of a support post of a stabilized roadway structure according to an embodiment of the present application.
Description of reference numerals: 11. a top layer; 12. a lower layer; 21. an upper base layer; 22. a lower base layer; 31. compacting the cushion layer; 32. a water-permeable cushion layer; 4. a heat-insulating layer; 5. a reverse osmosis layer; 6. a support pillar; 61. a metal inner core; 7. protecting the edges; 71. a support bar; 8. a kerb stone.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses stable road structure. Referring to fig. 1 and 2, a stable road structure comprises a cushion layer, a base layer and a surface layer which are sequentially paved from bottom to top, wherein the surface layer is composed of an upper surface layer 11 and a lower surface layer 12, the upper surface layer 11 is paved by asphalt mastic gravel mixture or asphalt concrete in the embodiment of the application, so that the skid resistance and the flatness of the surface of a road surface are ensured, the road structure is wear-resistant and waterproof, the structural strength and the high and low temperature stability are high, and the wear and the looseness caused by vertical force and horizontal force of driving load and vacuum suction generated behind a vehicle body can be conveniently and directly borne by the upper surface layer 11 and resisted by the vertical force and the horizontal force of the driving load. The lower surface layer 12 is formed by paving asphalt concrete in the embodiment of the application, so that the strength of the surface layer is ensured, and the vertical force applied to the surface layer is conveniently transferred downwards.
Referring to fig. 1 and 2, the base layer includes an upper base layer 21 and a lower base layer 22, the upper base layer 21 is formed by paving broken stones and concrete in the embodiment of the present application, the lower base layer 22 is formed by paving materials with strength slightly lower than that of the upper base layer 21, such as gravel and concrete, a plurality of rows of inclined supporting columns 6 are embedded in the upper base layer 21 and the lower base layer 22, a metal inner core 61 such as a steel bar section is arranged in each supporting column 6, the supporting columns 6 are formed by pouring concrete, two adjacent supporting columns 6 in each row of supporting columns 6 are connected in an embedded manner, the mutual limiting effect of each row of supporting columns 6 is enhanced, and the supporting effect of the supporting columns 6 on the upper base layer 21 and the lower base layer 22 is improved.
Referring to fig. 1 and 2, the bed course includes the closely knit bed course 31 and the permeable pad course 32 of closely knit bed course 31 below that the top was laid, and closely knit bed course 31 adopts closely knit material and insulation material to mix and makes, and closely knit material chooses for use cement, lime, cinder etc. in this application embodiment, insulation material chooses for use light haydite, vitrified micro ball thermal mortar etc. in this application embodiment, has improved the heat-insulating effect of bed course, prevents that phenomenons such as frost heaving, grout from appearing in the bed course.
Referring to fig. 1 and 2, the permeable cushion 32 is made of loose granular permeable material, and is formed by paving nearby gravels, gravels and the like, so that free water in the roadbed below the pavement is retained in the permeable cushion 32 and the compact cushion 31, and the free water is prevented from permeating into the base layer, so that the base layer is eroded by groundwater and slumps, water insulation and drainage of the cushion are facilitated, the pavement structure is ensured to be in a dry or wet state, the stability of the road in a humid zone, a wet soft soil foundation and a frost heaving soil foundation is improved, and load stress transmitted from the base layer to the cushion is transmitted to the roadbed below, and the roadbed and the cushion are ensured to work within an allowable stress range.
Referring to fig. 1 and 2, the heat insulating layers 4 are respectively laid between the upper base layer 21 and the lower base layer 12, and between the lower base layer 22 and the dense cushion layer 31, and the heat insulating layers 4 are made of polystyrene boards in the embodiment of the present application, so that the heat insulating effect of the base layer is enhanced. The anti-infiltration layer 5 of silt has been laid to the bed course 32 below of permeating water, like geotechnological cloth etc. has made things convenient for and has separated the bed course 32 and the road bed that will permeate water, prevents that the subgrade soil from upwards extruding into in the bed course, makes to permeate water and has the clearance between bed course 32 and the road bed, leads to the structural layer unstable.
Referring to fig. 1 and 2, the base layer and the cushion layer are both designed to be a trapezoidal layered structure with a cross section being wide at the bottom and narrow at the top, each side of the bottom surface of the water permeable cushion layer 32 is at least 25cm wider than the bottom surface of the lower base layer 22, each side of the bottom surface of the lower base layer 22 is at least 2cm wider than the bottom surface of the lower surface layer 12, so that the stress is conveniently diffused from top to bottom, and the bearing capacity of the pavement structure is improved.
Referring to fig. 1 and 2, a plurality of bracing pieces 71 are worn to be equipped with by the equal slope of closely knit bed course 31 and the bed course 32 both sides that permeates water, bracing piece 71 adopts cement column or reinforcing bar to make, closely knit bed course 31 all adopts the concrete to lay protective edge 7 with the both sides of the bed course 32 that permeates water, and bracing piece 71's top all exposes and is fixed in protective edge 7 from closely knit bed course 31 and the side of the bed course 32 that permeates water, made things convenient for the support and the protection of protective edge 7 to closely knit bed course 31 and the bed course 32 both sides that permeate water, prevent closely knit bed course 31 and permeate water the bed course 32 and sink to both sides. Both sides of the upper surface layer 11 and the lower surface layer 12 are paved with the kerbstone 8 by adopting the block stones or the concrete, so that the kerbstone 8 can conveniently block both sides of the upper surface layer 11 and the lower surface layer 12, and the upper surface layer 11 and the lower surface layer 12 are prevented from collapsing to both sides.
The implementation principle of the stable road structure in the embodiment of the application is as follows: the upper layer 11 is wear-resistant, waterproof, strong in structural strength, rigidity and high and low temperature stability, and is used for resisting rainfall and temperature variation, and bearing horizontal force generated when a vehicle runs and vacuum suction force generated behind the vehicle body. The vertical load power that upper strata 11 will receive transmits to the road bed to lower successive layer, has made things convenient for the successive layer diffusion of vertical stress, and a plurality of support columns 6 in upper strata 21 and the lower basic unit 22 have strengthened the spacing effect each other of layer structure, have improved upper strata 21 and lower basic unit 22's holding power. The heat preservation layer 4 above the upper base layer 21 and below the lower base layer 22 and the heat preservation material in the compact cushion layer 31 enhance the heat preservation performance of the layer structure, and reduce the probability of the occurrence of the fracture or frost heaving phenomenon of the layer structure caused by temperature change. Closely knit bed course 31 and the bed course 32 that permeates water all adopt the water permeability material to make, and permeate water the bed course 32 below and laid anti-infiltration layer 5, made things convenient for closely knit bed course 31 and the bed course 32 that permeates water to groundwater and anti-absorption of seeping water and discharge, prevent that groundwater from getting into the basic unit of top in, cause harmful effects to basic unit's structure.
The embodiment of the application also discloses a construction method of the stable road structure, which comprises the following steps:
step1, cleaning a section of roadbed surface of the road to be paved, so that the roadbed surface does not contain impurities and is in a dry or wet state;
step2, laying a reverse osmosis layer 5 such as geotextile on the roadbed, preventing roadbed soil from extruding into the permeable cushion layer 32 above the reverse osmosis layer, laying the permeable cushion layer 32 above the reverse osmosis layer 5 by using loose granular permeable materials such as gravel, broken stone and the like, absorbing redundant water in the roadbed, preventing underground water from upwards reversely permeating into the base layer, and compacting the laid permeable cushion layer 32;
step3, paving and compacting the compact cushion layer 31 on the permeable cushion layer 32 by adopting a mixture of compact materials such as cement, lime coal cinder and the like and heat-insulating materials such as polyphenyl granules, light ceramsite, vitrified micro-bead mortar and the like, further absorbing the upward-permeated underground water and preventing the upward permeation of the underground water;
step4, shaping two sides of the compact cushion layer 31 and the permeable cushion layer 32 to form a layer structure with a trapezoidal section for the compact cushion layer 31 and the permeable cushion layer 32, inserting a plurality of support rods 71 obliquely at two sides of the compact cushion layer 31 and the permeable cushion layer 32 to expose the top ends of the support rods 71 out of the compact cushion layer 31 or the permeable cushion layer 32, laying protective edges 7 at two sides of the compact cushion layer 31 and the permeable cushion layer 32 together by adopting concrete, fixing the top ends of the support rods 71 in the protective edges 7 to ensure the stability of the compact cushion layer 31 and the permeable cushion layer 32 and prevent the compact cushion layer 31 and the permeable cushion layer 32 from scattering to two sides;
step5, paving a heat-insulating layer 4 such as a polystyrene board above the dense cushion layer 31, placing a plurality of rows of support columns 6 above the heat-insulating layer 4 to enable two adjacent support columns 6 of each row to be embedded and connected, paving a lower base layer 22 above the heat-insulating layer 4 by using on-site gravel and concrete nearby, paving an upper base layer 21 above the lower base layer 22 by using gravel and concrete, covering the support columns 6, compacting the upper base layer 21 and the lower base layer 22, and paving a layer of heat-insulating layer 4 above the upper base layer 21;
step6, paving a lower surface layer 12 above the heat preservation layer 4 by adopting asphalt concrete, paving an upper surface layer 11 above the lower surface layer 12 by adopting asphalt mastic gravel mixture or asphalt concrete, paving a layer of seal mineral aggregate on the upper surface layer 11, compacting the upper surface layer 11 and the lower surface layer 12, and then maintaining the surface of the upper surface layer 11, such as removing floating mineral aggregate on the surface of the upper surface layer 11, scattering seal mineral aggregate on the oil spill part, and repairing the damaged part;
step7, shaping the two sides of the upper base layer 21, the lower base layer 22, the upper surface layer 11 and the lower surface layer 12 to enable the upper base layer 21 and the lower base layer 22 to form a layer structure with a trapezoidal section, wherein each side of the width of the lower cushion layer is at least 25cm wider than the width of the lower base layer 22, each side of the width of the lower base layer 22 is at least 2cm wider than the width of the lower surface layer 12, and concrete or block stones are jointly adopted to cling to the two sides of the upper base layer 21, the lower base layer 22, the upper surface layer 11 and the lower surface layer 12 to lay the curb 8, namely, the pavement of a section of road is completed.
The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, 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 (10)
1. The utility model provides a stable road structure, includes by lower supreme basic unit and the surface course of laying in proper order, the basic unit includes upper strata (21) and lower basic unit (22), the surface course includes upper strata (11) and following layer (12), its characterized in that: a plurality of supporting columns (6) are embedded in the upper base layer (21) and the lower base layer (22) together.
2. A stabilized road structure as claimed in claim 1, characterized in that: and a metal inner core (61) is arranged in the supporting column (6).
3. A stabilized road structure as claimed in claim 1, characterized in that: a plurality of the support columns (6) are all obliquely arranged, and every two adjacent support columns (6) are all in embedded fit.
4. A stabilized road structure as claimed in claim 1, characterized in that: and heat-insulating layers (4) are closely laid below the lower base layer (22) and above the upper base layer (21).
5. A stabilized road structure as claimed in claim 1, characterized in that: a compact cushion layer (31) mixed with a heat insulation material is laid below the lower base layer (22).
6. A stabilized road structure as claimed in claim 5, characterized in that: a permeable cushion layer (32) made of a permeable material is laid below the compact cushion layer (31).
7. A stabilized road structure as claimed in claim 6, characterized in that: and a reverse osmosis layer (5) is laid below the permeable cushion layer (32).
8. A stabilized road structure as claimed in claim 6, characterized in that: the upper base layer (21), the lower base layer (22), the compact cushion layer (31) and the permeable cushion layer (32) are all extended to two sides along the width direction to form a trapezoid.
9. A stabilized road structure as claimed in claim 6, characterized in that: closely knit bed course (31) reach the bracing piece (71) is worn to be equipped with in the equal slope of bed course (32) both sides of permeating water, closely knit bed course (31) reach it is provided with massive protective edge (7) to permeate water bed course (32) both sides jointly to hug closely, corresponding is worn to locate on bracing piece (71) top in protective edge (7), go up basic unit (21), lower basic unit (22), above surface course (11), below surface course (12) both sides all hug closely jointly and are provided with massive curb stone (8).
10. A method of constructing a stable road structure using a stable road structure as claimed in any one of claims 1 to 9, characterized by: the method comprises the following steps:
step1, cleaning a section of roadbed surface of the road to be paved, so that the roadbed surface does not contain impurities and is in a dry or wet state;
step2, laying a reverse osmosis layer (5) such as geotextile on a roadbed, preventing roadbed soil from being extruded into a permeable cushion layer (32) above the reverse osmosis layer, laying the permeable cushion layer (32) above the reverse osmosis layer (5) by using loose granular permeable materials such as gravel, broken stones and the like, absorbing redundant water in the roadbed, preventing underground water from upwards reversely permeating into a base layer, and compacting the laid permeable cushion layer (32);
step3, paving a compact cushion layer (31) on the permeable cushion layer (32) by adopting a mixture of compact materials such as cement, lime coal slag and the like and heat-insulating materials such as polyphenyl particles, light ceramic particles, vitrified micro-bead mortar and the like, compacting, further absorbing the infiltrated underground water, and preventing the underground water from infiltrating upwards;
step4, shaping two sides of the compact cushion layer (31) and the permeable cushion layer (32), enabling the compact cushion layer (31) and the permeable cushion layer (32) to form a layer structure with a trapezoidal section, obliquely inserting a plurality of support rods (71) into the two sides of the compact cushion layer (31) and the permeable cushion layer (32), enabling the top ends of the support rods (71) to be exposed out of the compact cushion layer (31) or the permeable cushion layer (32), paving protective edges (7) on the two sides of the compact cushion layer (31) and the permeable cushion layer (32) by adopting concrete together, fixing the top ends of the support rods (71) in the protective edges (7), ensuring the stability of the compact cushion layer (31) and the permeable cushion layer (32), and preventing the compact cushion layer (31) and the permeable cushion layer (32) from scattering to the two sides;
step5, paving a heat-insulating layer (4) such as a polystyrene board above a compact cushion layer (31), placing a plurality of rows of support columns (6) above the heat-insulating layer (4), enabling two adjacent support columns (6) of each row to be embedded and connected, paving a lower base layer (22) above the heat-insulating layer (4) by using on-site gravel and concrete nearby, paving an upper base layer (21) above the lower base layer (22) by using gravel and concrete, covering the support columns (6), compacting the upper base layer (21) and the lower base layer (22), and paving a heat-insulating layer (4) above the upper base layer (21);
step6, paving a lower surface layer (12) above a heat insulation layer (4) by adopting asphalt concrete, paving an upper surface layer (11) above the lower surface layer (12) by adopting asphalt mastic macadam mixture or asphalt concrete, paving a layer of seal mineral aggregate on the upper surface layer (11), compacting the upper surface layer (11) and the lower surface layer (12), maintaining the surface of the upper surface layer (11), for example, removing floating mineral aggregate on the surface of the upper surface layer (11), supplementing seal mineral aggregate on a flooded oil position, and repairing a damaged position;
step7, shaping the two sides of the upper base layer (21), the lower base layer (22), the upper surface layer (11) and the lower surface layer (12), so that the upper base layer (21) and the lower base layer (22) form a layer structure with a trapezoidal section, each side of the width of the lower cushion layer is at least 25cm wider than the width of the lower base layer (22), each side of the width of the lower base layer (22) is at least 2cm wider than the width of the lower surface layer (12), and the two sides of the upper base layer (21), the lower base layer (22), the upper surface layer (11) and the lower surface layer (12) jointly adopt concrete or block stones to be tightly adhered to lay the curb stones (8), namely, the laying of a section of road is completed.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774743A (en) * | 2021-11-02 | 2021-12-10 | 李万明 | Roadbed reinforcing structure for highway engineering construction and construction method |
| CN114197259A (en) * | 2021-12-31 | 2022-03-18 | 北京市政路桥股份有限公司 | Vibration damping road structure and construction method thereof |
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| CN114197259A (en) * | 2021-12-31 | 2022-03-18 | 北京市政路桥股份有限公司 | Vibration damping road structure and construction method thereof |
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