CN113430890A - Permanent composite pavement structure for old asphalt pavement reconstruction and construction device - Google Patents

Permanent composite pavement structure for old asphalt pavement reconstruction and construction device Download PDF

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Publication number
CN113430890A
CN113430890A CN202110750938.5A CN202110750938A CN113430890A CN 113430890 A CN113430890 A CN 113430890A CN 202110750938 A CN202110750938 A CN 202110750938A CN 113430890 A CN113430890 A CN 113430890A
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China
Prior art keywords
gear
upper base
base layer
layer
surface layer
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Inventor
贾涛
戈春启
王昊
赵淑慧
许子皓
张希
肖兵
李子迪
孙潇
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Zhumadian Huazhong Road Design Co ltd
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Zhumadian Huazhong Road Design Co ltd
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Priority to CN202110750938.5A priority Critical patent/CN113430890A/en
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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
    • E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • 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
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0073—Fatigue

Abstract

The invention provides a permanent composite pavement structure for reconstructing an old asphalt pavement and a construction device, wherein the pavement structure sequentially comprises the following components from top to bottom: surface course, last basic unit, subbase, bed course, the direct and soil layer contact of bed course bottom, just both ends are equipped with the dirt road shoulder about the pavement structure, the dirt road shoulder top with surface course contact department is equipped with the reinforcement road shoulder. The invention provides a permanent composite pavement structure and a construction device for reconstructing an old asphalt pavement, so as to solve the technical problems.

Description

Permanent composite pavement structure for old asphalt pavement reconstruction and construction device
Technical Field
The invention relates to the technical field of road traffic, in particular to a permanent composite pavement structure for reconstructing an old asphalt pavement and a construction device.
Background
With the development of high-grade roads, particularly the construction of highways, asphalt concrete pavements are the main form of pavements.
However, new problems have come, and the rapid increase of traffic volume, the large-scale vehicles, the severe overload, the channelized vehicles, etc. caused by the rapid development of national economy have led to severe tests on asphalt pavements. Because the preventive maintenance is not carried out on the heavy traffic road in time, the performance of the asphalt pavement is seriously attenuated along with the increase of service time, and structural damage occurs.
Traditional bituminous paving structure comprises asphalt surface course, basic unit, subbase and road bed usually, does not set up reinforced structure, influences the road surface structural steadiness, causes the road surface to damage easily, and life is short.
Disclosure of Invention
The invention provides a permanent composite pavement structure for reconstructing an old asphalt pavement and a construction device, which are used for improving the technical problems in the background technology.
In order to solve the technical problem, the invention discloses a permanent composite pavement structure for reconstructing an old asphalt pavement, which sequentially comprises the following components from top to bottom: surface course, last basic unit, subbase, bed course, just both ends are equipped with the dirt road shoulder about the pavement structure, dirt road shoulder top with the surface course contact department is equipped with the reinforcement curb.
Preferably, the surface layer comprises, from top to bottom: the asphalt concrete comprises a fine particle type asphalt concrete layer, medium particle type asphalt concrete and coarse particle type asphalt concrete, wherein the particle sizes of the components of the fine particle type asphalt concrete layer, the medium particle type asphalt concrete and the coarse particle type asphalt concrete are sequentially increased.
Preferably, the upper base layer comprises stabilized soil or stabilized granules.
Preferably, the cushion layer includes: coarse sand, gravel, broken stone, coal slag and slag.
Preferably, the upper base layer further comprises:
the force sensors I are arranged in the upper base layer, and one force sensor I is arranged at intervals of a preset distance and used for detecting the stress of the upper base layer where the force sensors I are located;
the first controller and the first alarm are electrically connected, the first controller controls the first alarm to work based on the first force sensor, and the first alarm comprises:
calculating the comprehensive force of the wheels transmitted by the surface layer borne by the upper base layer through a formula (1), and when the comprehensive force of the wheels transmitted by the surface layer borne by the upper base layer exceeds a preset range, giving an alarm to remind a user of repairing the road surface;
Figure BDA0003144367300000021
wherein F is the comprehensive force of the wheel transmitted by the surface layer born by the upper base layer, lambda is the temperature shrinkage coefficient of the material forming the upper base layer, E is the elastic modulus of the material of the upper base layer, T is the current actual environment temperature0Presetting a reference environment temperature, D is the length of an upper base layer in the detection road section, L is the width of the upper base layer in the detection road section, kappa is the stress relaxation coefficient of the upper base layer, alpha is the included angle between the upper base layer and the horizontal plane, sin is sine, mu is the Poisson ratio of an upper base layer material, and F is the ratio of the upper base layer material to the horizontal plane0For the sum of the detected values of all force sensors one in the detected section, FmaxIs the maximum detection value of the first force sensor of the detected road section, and F is the maximum detection valueAnd detecting the average value of the detection values of all the force sensors I with the detection values in the road section.
Preferably, the surface course material is asphalt mixture, and the composite pavement structure further includes:
the second force sensors are arranged in the pavement surface layer, and one second force sensor is arranged at intervals of a preset distance and used for detecting the stress of the position where the second force sensor is located;
the timer is used for recording the used time of the pavement surface layer;
the second controller is electrically connected with the second force sensor, the timer and the second alarm, the second controller controls the second alarm to work based on the second force sensor and the timer, and the method comprises the following steps of:
step 1: and (3) calculating the stress coefficient W of the surface layer material according to the formula (2) and the detection value of the force sensor II:
Figure BDA0003144367300000031
wherein W is the stress coefficient of the facing material, F2For maximum detection of all force sensors two in the detected section, F3For detecting the sum of the detection values of all the second force sensors in the road section, S is the total area of the surface layer of the detected road section, EHThe dynamic compression modulus of the asphalt mixture is shown, C is the saturation of asphalt in the asphalt mixture, e is a natural base number, and the value is 2.72;
step 2: calculating a fatigue life coefficient E of the asphalt mixture in the surface layer according to a formula (3), comparing the fatigue life coefficient of the asphalt mixture in the surface layer with a corresponding preset fatigue life coefficient range by the second controller, and controlling an alarm device II to give an alarm when the fatigue life coefficient E of the asphalt mixture in the surface layer exceeds the fatigue life coefficient range by the second controller;
Figure BDA0003144367300000032
wherein E is the fatigue life coefficient of the asphalt mixture in the surface layer, delta is the surface layer type coefficient, sigma is the temperature adjustment coefficient of the surface layer, A is the pavement grade coefficient, t is the timer record value, t is the time0Is a unit time.
The invention also discloses a construction device for constructing the permanent composite pavement structure for reconstructing the old asphalt pavement, which comprises the following components: collection device, discharging device, flattening device, just collection device, discharging device, flattening device fixed mounting are on the base, base bottom week side fixed mounting has a plurality of removal wheels, base left side top is fixed with the handle.
Preferably, the collecting means comprises:
the bottom end of the collecting box is fixed on the base, and the two ends of the collecting box are provided with first through holes;
the first motor is fixed on the collecting box, an output shaft of the first motor penetrates through the collecting box and is fixedly connected with the first telescopic rod, and a first gear is fixedly mounted on the output shaft of the first motor;
the screw rods are symmetrically arranged at two ends of the first gear, the top ends of the screw rods are rotatably connected to the top end of the inner wall of the collecting box, a second gear is fixedly arranged at the top ends of the screw rods, and the second gear is meshed with the first gear;
the screw rod is in threaded connection, and the bottom end of the screw rod nut is fixedly connected with the outer ring of the key sleeve;
the top end of the key sleeve is connected with the lead screw nut through a connecting sleeve, and the connecting sleeve is rotationally connected with the key sleeve;
a key groove is formed in the key sleeve, a connecting key is arranged on the outer side of one bottom end of the telescopic rod, the connecting key is connected in the key groove in a sliding mode, and the bottom end of the key sleeve is fixedly connected with the spiral rod;
a soil discharging cover is fixed on the surface of the collecting box outside the through hole I, and a soil collecting bottle is sleeved at the bottom of the soil discharging cover;
the bottom end of the soil collecting bottle is tightly attached to the surface of the collecting box, and bayonets are formed in the two sides of the top of the soil collecting bottle;
fixing blocks are fixed on the surfaces of the unearthing covers on one sides of the bayonets, and clamping rods are hinged to the surfaces of the fixing blocks;
the utility model discloses a soil discharging cover, including bayonet socket, clamping bar, regulating spring, regulation spring, the mutual joint cooperation of bayonet socket, the clamping bar surface mounting of bayonet socket top has regulating spring, just the surface of the regulating spring other end is connected with the fixed surface of unearthing the cover.
Preferably, the discharging device is arranged on the left side of the collecting device, and the discharging device comprises:
the feeding hole is formed in the stirring box, and the bottom end of the stirring box is fixed on the base;
the motor II is fixedly arranged on the outer wall of the left side of the stirring box, an output shaft of the motor II penetrates through the stirring box and is fixedly connected with the first stirring rod, the right end of the first stirring rod is rotatably connected to the inner wall of the stirring box, and a first discharge hole is formed in the stirring box and below the first stirring rod;
the baffle is inserted in the stirring box, and the left side surface of the baffle is provided with a second through hole;
the bottom end of the motor III is fixed on a fixing plate, the right side of the fixing plate is fixedly connected with the left side wall of the stirring box, and an output shaft of the motor III is fixedly connected with a gear III;
the front end and the rear end of the third gear are respectively meshed with the fourth gear and the fifth gear, the right side of the fourth gear penetrates through the stirring box and is fixedly connected with the second stirring rod, the upper end of the fourth gear is meshed with the sixth gear (47), the right side of the fifth gear penetrates through the stirring box and is fixedly connected with the third stirring rod, and the second stirring rod and the third stirring rod are rotatably connected with the stirring box and are horizontally arranged along the left-right direction;
the six-axis part of the gear penetrates through the stirring box and is fixedly connected with the second screw rod, and a T-shaped block is sleeved on the surface of the second screw rod;
the left side of the filter plate penetrates through the stirring box, a third through hole is formed in the stirring box between the filter plates, and the right side of the filter plate penetrates through the adjusting chamber and is fixedly connected with the two springs;
the other end of the spring is fixed on the rectangular block, and the other end of the rectangular block is connected with the inner wall of the adjusting chamber;
the adjusting rods are symmetrically fixed at the upper end and the lower end of the filter plate and connected with rollers, the rollers are in contact with the inner walls of the upper end and the lower end of the adjusting chamber, and the right end of the adjusting chamber is fixed on the inner wall of the stirring box;
the stirring box bottom is equipped with opening one, an opening bottom and coupling hose fixed connection, coupling hose bottom fixed mounting has discharge gate two.
Preferably, the flattening device is arranged on the left side of the discharging device, and the flattening device comprises:
the bottom end of the placing box is provided with a second opening;
two electric telescopic handle, the symmetry sets up at the cylinder both ends, electric telescopic handle top is fixed place on the incasement wall, the bottom with the cylinder rotates through the pivot to be connected.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a pavement structure according to the present invention.
FIG. 2 is a schematic view of the structure of the surface layer of the present invention.
FIG. 3 is a schematic structural view of the construction apparatus of the present invention.
FIG. 4 is a schematic view of the structure of the collecting device of the present invention.
FIG. 5 is a schematic view of the point A structure in FIG. 4 according to the present invention.
FIG. 6 is a schematic view of the structure of the discharging device of the present invention.
FIG. 7 is a left side view of the point B in FIG. 6 according to the present invention.
FIG. 8 is a schematic view of the internal structure of the conditioning chamber of the present invention.
FIG. 9 is a left side view of the flattening apparatus of the present invention.
In the figure: 1. a surface layer; 101. a fine particle type asphalt concrete layer; 102. medium particle asphalt concrete; 103. coarse-grained asphalt concrete; 2. an upper base layer; 3. an underlayer; 4. a cushion layer; 5. an earth shoulder; 6. reinforcing a road shoulder; 7. a collection device; 8. a discharging device; 9. a flattening device; 10. a base; 11. a moving wheel; 12. a grip; 13. a first motor; 14. a collection box; 15. a first telescopic rod; 16. a screw rod; 17. a first gear; 18. a second gear; 19. a lead screw nut; 20. a key sleeve; 21. a screw rod; 22. a first through hole; 23. a cover for unearthing; 24. a soil collecting bottle; 25. a bayonet; 26. a fixed block; 27. a clamping rod; 28. adjusting the spring; 29. a feed inlet; 30. a stirring box; 31. a second motor; 32. a first stirring rod; 33. a first discharge hole; 34. a baffle plate; 35. a second through hole; 36. a third motor; 37. a fixing plate; 38. a third gear; 39. a fourth gear; 40. a fifth gear; 41. a second stirring rod; 42. placing a box; 43. a third stirring rod; 44. an electric telescopic rod; 45. a drum; 46. a second opening; 47. a sixth gear; 48. a second screw rod; 49. a T-shaped block; 50. a filter plate; 51. a third through hole; 52. a conditioning chamber; 53. a spring; 54. a rectangular block; 55. adjusting a rod; 56. a roller; 57. a connecting hose; 58. and a second discharge hole.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
Example 1:
the embodiment of the invention provides a permanent composite pavement structure for reconstructing an old asphalt pavement, which comprises the following components in sequence from top to bottom as shown in figures 1-2: surface course 1, upper substrate 2, subbase 3, bed course 4, 4 direct and soil layer contacts in the bottom of bed course (specific, the bed course bottom is the road bed), just both ends (preferred, both ends are road width direction's both ends about,) are equipped with dirt road shoulder 5 about the road surface structure, dirt road shoulder 5 top with 1 department of contact of surface course is equipped with and consolidates road shoulder 6.
Preferably, still can set up supplementary reinforced structure on the surface course, specifically be: the high-performance cement concrete layer arranged on the surface layer can be directly paved after grouting treatment is carried out on the damaged serious area of the original road surface to improve the structural strength uniformity of the road surface by depending on the good stress diffusion capacity of the high-performance cement concrete, the construction is environment-friendly and convenient, the composite road surface structure also improves the long-term service performance of the road, and the service life of the cement concrete road surface is basically 2 times that of the asphalt road surface;
preferably, the road shoulder 5 and the reinforcing road shoulder 6 are high-performance cement concrete layers.
The working principle and the beneficial effects of the technical scheme are as follows: according to the invention, the pavement can be reinforced (and the auxiliary reinforcing structure can be arranged for further reinforcement) by arranging the road shoulder 5 and the reinforcing road shoulder 6, so that the problems that the pavement is easily damaged by a traditional road and the stability of the traditional pavement structure is poor and the service life is short are solved.
Example 2
On the basis of embodiment 1, optionally, the surface layer 1 sequentially includes, from top to bottom: the fine-grain asphalt concrete layer 101, the medium-grain asphalt concrete 102 and the coarse-grain asphalt concrete 103 are sequentially increased in particle size, wherein the fine-grain asphalt concrete layer 101 (the top end of the fine-grain asphalt concrete layer 101 is directly contacted with vehicles and the atmosphere), the medium-grain asphalt concrete 102 and the coarse-grain asphalt concrete 103 are sequentially increased in particle size.
The upper base layer 2 is constructed by stabilized soil or stabilized aggregates and has sufficient strength and rigidity and good stress diffusion capacity, the upper base layer 2 mainly bears the comprehensive force of the wheels transmitted by the surface layer 1 and diffuses the comprehensive force to the base layer 3 and the cushion layer 4, the upper base layer 2 plays a main bearing role, the sub-base layer 3 is arranged at the top end of the cushion layer 4, the requirement of the material of the sub-base layer 3 is inferior to that of the upper base layer 2, and the sub-base layer 3 mainly shares the bearing role of the upper base layer 2.
Optionally, the cushion layer 4 includes: coarse sand, gravel, broken stone, coal slag and slag, wherein the cushion layer 4 mainly plays roles of water resistance, water drainage and temperature insulation and transfers and diffuses load stress transmitted from the subbase layer 3.
The beneficial effects of the above technical scheme are: by arranging the surface layer 1 into a three-layer structure, and the fine particle type asphalt concrete layer 101, the medium particle type asphalt concrete 102 and the coarse particle type asphalt concrete 103 are respectively composed of asphalt concretes with different particle sizes, compared with the prior art that only one layer of asphalt is arranged, the whole surface layer structure is further reinforced, so that the service life of the surface layer 1 is longer, and by arranging the surface layer 1 on the road shoulder 5 in an inclined way, rainwater can flow out of the surface layer 1 from two ends under the condition of rain or wet and slippery road surface, so that the wet and slippery road surface is prevented from reducing the grip force of automobile tires, and traffic accidents are prevented;
through the arrangement of the base layer 2 and the sub-base layer 3, the vertical force of the vehicle load is borne, the stress transmitted by the surface layer 1 is diffused to the cushion layer 4, the upper base layer 2 and the sub-base layer 3 have enough strength and rigidity (to further reinforce the whole pavement structure), and have good stress diffusion capability, the upper base layer 2 and the sub-base layer 3 are influenced by natural factors, although the influence is smaller than that of the surface layer 1, the upper base layer 2 and the sub-base layer 3 still have enough water stability to prevent the upper base layer 3 from deforming and increasing after being wetted and softened, so that the surface layer 1 is damaged, and the surfaces of the upper base layer 2 and the sub-base layer 3 have higher flatness to ensure the flatness of the surface layer 1 and interlayer combination;
the setting of the cushion layer 4 improves the humidity and temperature conditions of the soil foundation, so as to ensure the strength and rigidity stability of the surface layer 1, the upper base layer 2 and the subbase layer 3 (further improve the stability of the whole pavement structure), eliminate adverse effects such as freezing, wet and soft caused by the change of the water temperature condition of the soil foundation, diffuse the load stress transmitted by the upper base layer 2 and the subbase layer 3, reduce the deformation generated by the soil foundation, and simultaneously prevent the road foundation soil from extruding into the upper base layer 2 and the subbase layer 3 and influencing the structural performance of the upper base layer 2 and the subbase layer 3;
compared with the prior asphalt pavement which sequentially comprises an asphalt surface layer, a base layer, a subbase layer and a roadbed from top to bottom, the structure has improved structural performance.
Example 3
On the basis of any one of the above embodiments 1-2, the upper base layer 2 further comprises:
the force sensors I are arranged in the upper base layer 2, and one force sensor I is arranged at intervals of a preset distance and used for detecting the stress of the upper base layer 2 where the force sensors I are located;
the first controller and the first alarm are electrically connected, the first controller controls the first alarm to work based on the first force sensor, and the first alarm comprises:
calculating the comprehensive force F of the wheels transmitted by the surface layer 1 borne by the upper base layer 2 through a formula (1) and a detection value of a force sensor I, and when the comprehensive force of the wheels transmitted by the surface layer 1 borne by the upper base layer 2 exceeds a preset range, alarming by an alarm I to remind of repairing the road surface;
Figure BDA0003144367300000091
wherein F is the comprehensive force of the wheel transmitted by the surface layer 1 born by the upper base layer 2, λ is the temperature shrinkage coefficient (changed along with the change of temperature) of the material composing the upper base layer 2, E is the elastic modulus of the material of the upper base layer 2,t is the current actual ambient temperature, T0Presetting a reference environment temperature, D is the length of the upper base layer 2 in the detection road section, L is the width of the upper base layer 2 in the detection road section, kappa is the stress relaxation coefficient of the upper base layer 2, alpha is the included angle between the upper base layer 2 and the horizontal plane, sin is sine, mu is the Poisson ratio of the material of the upper base layer 2, and F is the Poisson ratio of the material of the upper base layer 20For the sum of the detected values of all force sensors one in the detected section, FmaxIs the maximum detection value of the first force sensor for detecting the road section,
Figure BDA0003144367300000092
the average value of the detection values of all the force sensors I with the detection values in the detection section,
Figure BDA0003144367300000093
by adding various coefficients influencing the upper base layer 2 and comparing the influence of the temperature on the upper base layer 2, the calculation result is more accurate and reliable.
The working principle and the beneficial effects of the technical scheme are as follows: firstly, according to a formula (1) and a detection value of a force sensor, calculating the comprehensive force (such as a downward vertical force of a wheel) of the wheel transmitted by a surface layer 1 born by an upper base layer 2, and comprehensively considering the temperature shrinkage coefficient of a material forming the upper base layer 2, the elastic modulus of the material of the upper base layer 2, the current actual environment temperature, the preset reference environment temperature, the length of the upper base layer 2 in the detection road section, the width of the upper base layer 2 in the detection road section, the stress relaxation coefficient of the upper base layer 2 and the included angle between the upper base layer 2 and the horizontal plane, so that the calculation result is more accurate and reliable.
Example 4
On the basis of any one of the above embodiments 1-2, the material of the surface layer 1 is asphalt mixture, and the composite pavement structure further includes:
the second force sensors are arranged in the pavement surface layer 1, and one second force sensor is arranged at intervals of a preset distance and used for detecting the stress of the position where the second force sensor is located;
the timer is used for recording the used time of the pavement surface layer 1;
the second controller is electrically connected with the second force sensor, the timer and the second alarm, the second controller controls the second alarm to work based on the second force sensor and the timer, and the method comprises the following steps of:
step 1: and (3) calculating the stress coefficient W of the material forming the surface layer 1 according to the formula (2) and the detection value of the force sensor II:
Figure BDA0003144367300000101
wherein W is the stress coefficient of the material of the surface layer 1, F2For maximum detection of all force sensors two in the detected section, F3For detecting the sum of the detection values of all the second force sensors in the road section, S is the total area of the surface layer 1 of the detected road section, EHThe dynamic compression modulus of the asphalt mixture is shown, C is the saturation of asphalt in the asphalt mixture, e is a natural base number, and the value is 2.72;
step 2: calculating a fatigue life coefficient E of the asphalt mixture in the surface layer 1 according to a formula (3), comparing the fatigue life coefficient of the asphalt mixture in the surface layer 1 with a corresponding preset fatigue life coefficient range by the second controller, and controlling an alarm to give an alarm by the second controller when the fatigue life coefficient E of the asphalt mixture in the surface layer 1 exceeds the fatigue life coefficient range;
Figure BDA0003144367300000111
wherein E is the fatigue life coefficient of the asphalt mixture in the surface layer 1, delta is the type coefficient (the value range is 1.0-1.2) of the surface layer 1, sigma is the temperature adjustment coefficient (the value range is 0.32-0.59) of the surface layer 1, A is the pavement grade coefficient (the value range is 1-5), t is the recorded value of the timer, and0is a unit time.
The working principle and the beneficial effects of the technical scheme are as follows: firstly, calculating the stress coefficient of a material forming a surface layer 1 according to a formula (2) and detection values of force sensors II, and comprehensively considering the maximum detection values of all the force sensors II in a detection section, the sum of the detection values of all the force sensors II in the detection section, the total area of the surface layer 1 of the detection section, the dynamic compression modulus of the asphalt mixture and the saturation of asphalt in the asphalt mixture to ensure that the calculation result is more accurate and reliable;
then according to a formula (3), the fatigue life coefficient of the asphalt mixture in the surface layer 1 is calculated by comprehensively considering the surface layer 1 type coefficient, the temperature adjustment coefficient of the surface layer 1, the pavement grade coefficient and the timer record value, so that the calculation result is more accurate and reliable;
when the fatigue life E of the asphalt mixture in the surface layer 1 exceeds the range of the preset state coefficient, the second controller controls the second alarm to give an alarm, so that a worker is reminded to lay the pavement again in time, the pavement is prevented from being cracked to damage vehicles running from and to, and the requirement of a user on the permanent composite pavement structure for modifying the old asphalt pavement is met.
Example 5
As shown in fig. 3, the present invention also provides a construction apparatus for constructing a permanent composite pavement structure for old asphalt pavement reconstruction as described in any one of embodiments 1 to 4 above, the construction apparatus comprising: collection device 7, discharging device 8, flattening device 9, just collection device 7, discharging device 8, flattening device 9 fixed mounting are on base 10, base 10 bottom week side fixed mounting has a plurality of removal wheels 11, base 10 left side top is fixed with handle 12.
The collection device 7 is beneficial for workers to clean old asphalt on the ground in time; the asphalt material to be paved (which can also be used for paving other pavement structures) is poured to the pavement through a discharging device 8; and the flattening device is used for flattening the paved road surface.
The beneficial effects of the above technical scheme are: through inciting somebody to action construction equipment fixed mounting be in on the base 10 for the user conveniently removes through removing wheel 11, through installation handle 12, is favorable to the user to conveniently control this construction equipment, unusual convenient and practical has reduced user's intensity of labour.
Example 6
On the basis of embodiment 5, as shown in fig. 4 and 5, the collecting device 7 includes:
the bottom end of the collecting box 14 is fixed on the base 10, and through holes I22 are arranged at two ends of the collecting box 14;
the first motor 13 is fixed on the collection box 14, an output shaft of the first motor 13 penetrates through the collection box 14 to be fixedly connected with the first telescopic rod 15, and a first gear 17 is fixedly mounted on the output shaft of the first motor 13;
the screw rods 16 are symmetrically arranged at two ends of the first gear 17, the top ends of the screw rods 16 are rotatably connected to the top end of the inner wall of the collecting box 14, a second gear 18 is fixedly arranged at the top end of the screw rods 16, and the second gear 18 is meshed with the first gear 17;
the screw rod 16 is in threaded connection, and the bottom end of the screw rod nut 19 is fixedly connected with the outer ring of the key sleeve 20;
the top end of the key sleeve 20 is connected with the lead screw nut 19 through a connecting sleeve, and the connecting sleeve is rotatably connected with the key sleeve 20;
a key groove is formed in the key sleeve 20, a connecting key is arranged on the outer side of the bottom end of the first telescopic rod 15, the connecting key is connected in the key groove in a sliding mode, and the bottom end of the key sleeve 20 is fixedly connected with the spiral rod 21;
an earth-discharging cover 23 is fixed on the surface of the collecting box 14 outside the first through hole 22, and an earth-collecting bottle 24 is sleeved at the bottom of the earth-discharging cover 23;
the bottom end of the soil collecting bottle 24 is tightly attached to the surface of the collecting box 14, and bayonets 25 are arranged on two sides of the top of the soil collecting bottle 24;
the surface of the soil discharging cover 23 on one side of the bayonet 25 is fixed with a fixed block 26, and the surface of the fixed block 26 is hinged with a clamping rod 27;
the bayonet 27 cooperates with bayonet 25 joint each other, bayonet 27 fixed surface above bayonet 25 has adjusting spring 28, just the surface of the adjusting spring 28 other end is connected with unearthed cover 23's fixed surface.
The working principle of the technical scheme is as follows: when a user needs to construct the ground, firstly, the first motor 13 is started, the first telescopic rod 15 is controlled to rotate downwards by the output shaft of the first motor 13, meanwhile, the screw rod 21 fixed on the inner ring of the key sleeve 20 rotates downwards, so that the asphalt on the ground is cleaned, then the first motor 13 is reversed, the first gear 17 fixed on the motor shaft rotates, the second gear 18 is controlled to rotate, the screw rod 16 rotates to drive the screw nut 19 to move upwards, the screw rod 21 is pulled upwards, waste materials are discharged from the first through hole 22 to the soil collecting bottle 24, and then when the residue needs to be cleaned, the soil collecting bottle 24 is taken out by pulling the clamping rod 27.
The beneficial effects of the above technical scheme are: through setting up collection device 7, be of value to the staff and in time clear up subaerial old pitch, reduce staff's intensity of labour, through the setting of collection soil bottle 24, be favorable to the user to collect the residue sooner, prevent that the residue from dropping subaerial.
Example 7
On the basis of example 5, as shown in fig. 6 to 9, the discharging device 8 is arranged at the left side of the collecting device 7, and the discharging device 8 comprises:
the feeding hole 29 is formed in the stirring box 30, and the bottom end of the stirring box 30 is fixed on the base 10;
the second motor 31 is fixedly installed on the outer wall of the left side of the stirring box 30, an output shaft of the second motor 31 penetrates through the stirring box 30 and is fixedly connected with the first stirring rod 32, the right end of the first stirring rod 32 is rotatably connected to the inner wall of the stirring box 30, and a first discharge hole 33 is formed in the stirring box 30 and below the first stirring rod 32;
the baffle 34 is inserted in the stirring box 30, and the left side surface of the baffle 34 is provided with a second through hole 35;
the bottom end of the motor III 36 is fixed on the fixing plate 37, the right side of the fixing plate 37 is fixedly connected with the left side wall of the stirring box 30, and the output shaft of the motor III 36 is fixedly connected with the gear III 38;
the front end and the rear end of the third gear 38 are respectively meshed with a fourth gear 39 and a fifth gear 40, the right side of the fourth gear 39 penetrates through the stirring box 30 and is fixedly connected with a second stirring rod 41, the upper end of the fourth gear 39 is meshed with a sixth gear 47, the right side of the fifth gear 40 penetrates through the stirring box 30 and is fixedly connected with a third stirring rod 43, and the second stirring rod 41 and the third stirring rod 43 are rotatably connected to the stirring box 30 and are horizontally arranged along the left-right direction;
the shaft part of the gear six 47 penetrates through the stirring box 30 to be fixedly connected with the screw rod two 48, and a T-shaped block 49 is sleeved on the surface of the screw rod two 48;
the left side of the filter plate 50 penetrates through the stirring box 30, a third through hole 51 is formed between the stirring box 30 and the filter plate 50, and the right side of the filter plate 50 penetrates through the adjusting chamber 52 and is fixedly connected with two springs 53;
the other end of the spring 53 is fixed on a rectangular block 54, and the other end of the rectangular block 54 is connected with the inner wall of the adjusting chamber 52;
optionally, the flattening device 9 is disposed on the left side of the discharging device 8, and the flattening device 9 includes:
the bottom end of the placing box 42 is provided with a second opening 46;
two electric telescopic handle 44, the symmetry sets up at cylinder 45 both ends, electric telescopic handle 44 top is fixed place on the case 42 inner wall, the bottom with cylinder 45 rotates through the pivot and is connected.
The working principle of the technical scheme is as follows: a user puts materials such as asphalt into the stirring box 30 through the feeding hole 29, drives the first stirring rod 32 to rotate by controlling the rotation of the second motor 31, so that the asphalt materials are fully mixed, then pulls the baffle 34 rightwards, so that the second through hole 35 and the first discharge hole 33 coincide, so that the materials fall below, then controls the third motor 36 to rotate, drives the third gear 38 to rotate by the third motor 36, rotates the fourth gear 39 and the fifth gear 40 which are meshed with the third gear 38, rotates the second stirring rod 41 and the third stirring rod 43, rotates the fourth gear 39, rotates the sixth gear 47, so that the second screw rod 48 rotates, drives the T-shaped block 49 to move left and right, so that the materials are secondarily stirred, the stirred asphalt materials fall onto the filter plate 50, then moves the filter plate 50 left and right, so that the asphalt materials are screened, large particles of materials are discharged from the third through hole 51, then the connecting hose 57 is controlled to align the second discharge hole 58 with the damaged part, asphalt materials are laid on the road surface, then the electric telescopic rod 44 is started, and the control roller 45 moves downwards out of the second opening 46 to flatten the road surface.
The beneficial effects of the above technical scheme are: through inciting somebody to action bituminous material carries out the secondary stirring for the material bonds more, through setting up T type piece 49, makes bituminous material can be abundant stir in agitator tank 30, through the setting of filter, makes the material of big granule filter, thereby filters the material that the granularity is the same, through setting up cylinder 45, is favorable to flattening the road surface, makes the road surface level and smooth, jolts when preventing that the vehicle from passing through this road surface, improves the travelling comfort of driving.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A permanent composite pavement structure for old asphalt pavement reconstruction, characterized in that it comprises, from top to bottom: surface course (1), last basic unit (2), subbase (3), bed course (4), just both ends are equipped with dirt road shoulder (5) about the road surface structure, dirt road shoulder (5) top with surface course (1) contact department is equipped with consolidates road shoulder (6).
2. Permanent composite pavement structure for old asphalt pavement renovation according to claim 1, characterized in that said face layer (1) comprises, in sequence from top to bottom: the asphalt concrete comprises a fine particle type asphalt concrete layer (101), medium particle type asphalt concrete (102) and coarse particle type asphalt concrete (103), and the particle sizes of the components of the fine particle type asphalt concrete layer (101), the medium particle type asphalt concrete (102) and the coarse particle type asphalt concrete (103) are increased in sequence.
3. Permanent composite pavement structure for old asphalt pavement renovation according to claim 1, characterized in that the upper base layer (2) comprises stabilized soil or stabilized aggregates.
4. Permanent composite pavement structure for old asphalt pavement renovation according to claim 1, characterized in that said underlayment (4) comprises: coarse sand, gravel, broken stone, coal slag and slag.
5. The permanent composite pavement structure for old asphalt pavement renovation according to claim 1, characterized in that the upper base layer (2) further comprises therein:
the force sensors I are arranged in the upper base layer (2) and are arranged at intervals of a preset distance and used for detecting the stress of the upper base layer (2) where the force sensors I are located;
the first controller and the first alarm are electrically connected with the first force sensor, the first controller controls the first alarm to work based on the first force sensor, and the first alarm comprises:
calculating the comprehensive force of the wheels transmitted by the surface layer (1) borne by the upper base layer (2) through a formula (1), and when the comprehensive force of the wheels transmitted by the surface layer (1) borne by the upper base layer (2) exceeds a preset range, alarming by an alarm I to remind of overhauling the road surface;
Figure FDA0003144367290000011
wherein F is the comprehensive force of the wheel transmitted by the surface layer (1) born by the upper base layer (2), lambda is the temperature shrinkage coefficient of the material forming the upper base layer (2), E is the elastic modulus of the material of the upper base layer (2), T is the current actual environment temperature0Presetting a reference environment temperature, D is the length of the upper base layer (2) in the detection section, L is the width of the upper base layer (2) in the detection section, kappa is the stress relaxation coefficient of the upper base layer (2), and alpha is the stress relaxation coefficientThe included angle between the upper base layer (2) and the horizontal plane, sin is sine, mu is Poisson's ratio of the material of the upper base layer (2), F0For the sum of the detected values of all force sensors one in the detected section, FmaxIs the maximum detection value of the first force sensor for detecting the road section,
Figure FDA0003144367290000021
the average value of the detection values of all the force sensors I with the detection values in the detection section is obtained.
6. The permanent composite pavement structure for old asphalt pavement renovation according to claim 1, characterized in that the material of the surface layer (1) is asphalt mixture, the composite pavement structure further comprising:
the second force sensors are arranged in the pavement surface layer (1), and one second force sensor is arranged at intervals of a preset distance and used for detecting the stress of the position where the second force sensor is located;
a timer for recording the used time of the pavement surface layer (1);
the second controller is electrically connected with the second force sensor, the timer and the second alarm, the second controller controls the second alarm to work based on the second force sensor and the timer, and the method comprises the following steps of:
step 1: and (3) calculating the stress coefficient W of the material forming the surface layer (1) according to the formula (2) and the detection value of the force sensor II:
Figure FDA0003144367290000022
wherein W is the stress coefficient of the material of the surface layer (1), F2For maximum detection of all force sensors two in the detected section, F3For detecting the sum of the detected values of all the second force sensors in the road section, S is the total area of the surface layer (1) of the detected road section, EHThe dynamic compression modulus of the asphalt mixture is shown, C is the saturation of asphalt in the asphalt mixture, e is a natural base number, and the value is 2.72;
step 2: calculating a fatigue life coefficient E of the asphalt mixture in the surface layer (1) according to a formula (3), comparing the fatigue life coefficient of the asphalt mixture in the surface layer (1) with a corresponding preset fatigue life coefficient range by the second controller, and controlling an alarm second to give an alarm when the fatigue life coefficient E of the asphalt mixture in the surface layer (1) exceeds the preset fatigue life coefficient range by the second controller;
Figure FDA0003144367290000031
wherein E is the fatigue life coefficient of the asphalt mixture in the surface layer (1), delta is the surface layer (1) type coefficient, sigma is the temperature adjustment coefficient of the surface layer (1), A is the pavement grade coefficient, t is the timer recorded value0Is a unit time.
7. A construction apparatus for constructing a permanent composite pavement structure for old asphalt pavement renovation according to any one of claims 1 to 6, characterized in that the construction apparatus comprises: collection device (7), discharging device (8), flattening device (9), just collection device (7), discharging device (8), flattening device (9) fixed mounting are on base (10), base (10) bottom week side fixed mounting has a plurality of moving wheels (11), base (10) left side top is fixed with handle (12).
8. Construction device according to claim 7, wherein said collecting device (7) comprises:
the bottom end of the collecting box (14) is fixed on the base (10), and through holes I (22) are formed in two ends of the collecting box (14);
the first motor (13) is fixed on the collection box (14), an output shaft of the first motor (13) penetrates through the collection box (14) to be fixedly connected with the first telescopic rod (15), and a first gear (17) is fixedly mounted on the output shaft of the first motor (13);
the screw rods (16) are symmetrically arranged at two ends of the first gear (17), the top ends of the screw rods (16) are rotatably connected to the top ends of the inner walls of the collecting box (14), a second gear (18) is fixedly arranged at the top ends of the screw rods (16), and the second gear (18) is meshed with the first gear (17);
the screw rod (16) is in threaded connection, and the bottom end of the screw rod nut (19) is fixedly connected with the outer ring of the key sleeve (20);
the top end of the key sleeve (20) is connected with the lead screw nut (19) through a connecting sleeve, and the connecting sleeve is rotatably connected with the key sleeve (20);
a key groove is formed in the key sleeve (20), a connecting key is arranged on the outer side of the bottom end of the first telescopic rod (15), the connecting key is connected in the key groove in a sliding mode, and the bottom end of the key sleeve (20) is fixedly connected with a spiral rod (21);
a soil discharging cover (23) is fixed on the surface of the collecting box (14) outside the first through hole (22), and a soil collecting bottle (24) is sleeved at the bottom of the soil discharging cover (23);
the bottom end of the soil collecting bottle (24) is tightly attached to the surface of the collecting box (14), and bayonets (25) are formed in two sides of the top of the soil collecting bottle (24);
fixed blocks (26) are fixed on the surfaces of the soil discharging covers (23) on one sides of the bayonets (25), and clamping rods (27) are hinged to the surfaces of the fixed blocks (26);
the bayonet socket is characterized in that the clamping rod (27) is matched with the bayonet (25) in a clamped mode, an adjusting spring (28) is fixed on the surface of the clamping rod (27) above the bayonet (25), and the surface of the other end of the adjusting spring (28) is fixedly connected with the surface of the soil discharging cover (23).
9. Construction device according to claim 7, wherein said outfeed device (8) is arranged to the left of said collecting device (7), said outfeed device (8) comprising:
the feeding hole (29) is formed in the stirring box (30), and the bottom end of the stirring box (30) is fixed on the base (10);
the motor II (31) is fixedly installed on the outer wall of the left side of the stirring box (30), an output shaft of the motor II (31) penetrates through the stirring box (30) and is fixedly connected with the stirring rod I (32), the right end of the stirring rod I (32) is rotatably connected to the inner wall of the stirring box (30), and a discharge hole I (33) is formed below the stirring rod I (32) in the stirring box (30);
the baffle (34) is inserted into the stirring box (30), and a second through hole (35) is formed in the left side surface of the baffle (34);
the bottom end of the motor III (36) is fixed on the fixing plate (37), the right side of the fixing plate (37) is fixedly connected with the left side wall of the stirring box (30), and the output shaft of the motor III (36) is fixedly connected with the gear III (38);
the front end and the rear end of the gear III (38) are respectively meshed with a gear IV (39) and a gear V (40), the right side of the gear IV (39) penetrates through the stirring box (30) and is fixedly connected with a stirring rod II (41), the upper end of the gear IV (39) is meshed with a gear VI (47), the right side of the gear V (40) penetrates through the stirring box (30) and is fixedly connected with a stirring rod III (43), and the stirring rod II (41) and the stirring rod III (43) are rotatably connected in the stirring box (30) and are horizontally arranged along the left-right direction;
the shaft part of the gear six (47) penetrates through the stirring box (30) and is fixedly connected with the screw rod II (48), and a T-shaped block (49) is sleeved on the surface of the screw rod II (48);
the left side of the filter plate (50) penetrates through the stirring box (30), a third through hole (51) is formed in the stirring box (30) between the filter plates (50), and the right side of the filter plate (50) penetrates through the adjusting chamber (52) and is fixedly connected with two springs (53);
the other end of the spring (53) is fixed on a rectangular block (54), and the other end of the rectangular block (54) is connected with the inner wall of the adjusting chamber (52);
the adjusting rods (55) are symmetrically fixed at the upper end and the lower end of the filter plate (50), the adjusting rods (55) are connected with rollers (56), the rollers (56) are in contact with the inner walls of the upper end and the lower end of the adjusting chamber (52), and the right end of the adjusting chamber (52) is fixed on the inner wall of the stirring box (30);
the stirring box (30) bottom is equipped with opening one (54), opening one (54) bottom and coupling hose (57) fixed connection, coupling hose (57) bottom fixed mounting has discharge gate two (58).
10. Construction device according to claim 7, wherein said flattening device (9) is arranged on the left side of said outfeed device (8), said flattening device (9) comprising:
a second opening (46) is formed in the bottom end of the placing box (42);
two electric telescopic handle (44), the symmetry sets up at cylinder (45) both ends, electric telescopic handle (44) top is fixed place on case (42) inner wall, the bottom with cylinder (45) are connected through the pivot rotation.
CN202110750938.5A 2021-07-01 2021-07-01 Permanent composite pavement structure for old asphalt pavement reconstruction and construction device Withdrawn CN113430890A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107165017A (en) * 2017-07-24 2017-09-15 上海市市政规划设计研究院 The permanent composite pavement structure transformed for old asphalt pavement
WO2018085623A1 (en) * 2016-11-04 2018-05-11 Children's Hospital Medical Center Compositions and methods of treating liver disease
CN109944146A (en) * 2019-03-25 2019-06-28 重庆大学 A kind of bituminous pavement flattening device
CN210262547U (en) * 2019-05-10 2020-04-07 安徽省交通控股集团有限公司 Wide structure is tied up to bituminous paving

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018085623A1 (en) * 2016-11-04 2018-05-11 Children's Hospital Medical Center Compositions and methods of treating liver disease
CN107165017A (en) * 2017-07-24 2017-09-15 上海市市政规划设计研究院 The permanent composite pavement structure transformed for old asphalt pavement
CN109944146A (en) * 2019-03-25 2019-06-28 重庆大学 A kind of bituminous pavement flattening device
CN210262547U (en) * 2019-05-10 2020-04-07 安徽省交通控股集团有限公司 Wide structure is tied up to bituminous paving

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