CN116894348A - Asphalt pavement structure ecological design method considering environmental load - Google Patents
Asphalt pavement structure ecological design method considering environmental load Download PDFInfo
- Publication number
- CN116894348A CN116894348A CN202310944113.6A CN202310944113A CN116894348A CN 116894348 A CN116894348 A CN 116894348A CN 202310944113 A CN202310944113 A CN 202310944113A CN 116894348 A CN116894348 A CN 116894348A
- Authority
- CN
- China
- Prior art keywords
- asphalt pavement
- asphalt
- environmental
- stage
- index
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 250
- 230000007613 environmental effect Effects 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 83
- 238000013461 design Methods 0.000 title claims abstract description 45
- 238000010276 construction Methods 0.000 claims abstract description 82
- 238000004364 calculation method Methods 0.000 claims abstract description 27
- 238000011156 evaluation Methods 0.000 claims abstract description 19
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims description 51
- 239000003344 environmental pollutant Substances 0.000 claims description 47
- 231100000719 pollutant Toxicity 0.000 claims description 47
- 239000002699 waste material Substances 0.000 claims description 32
- 239000002994 raw material Substances 0.000 claims description 27
- 238000005336 cracking Methods 0.000 claims description 25
- 239000011384 asphalt concrete Substances 0.000 claims description 22
- 230000000694 effects Effects 0.000 claims description 21
- 238000012512 characterization method Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 13
- 238000005265 energy consumption Methods 0.000 claims description 10
- 230000020477 pH reduction Effects 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 238000012851 eutrophication Methods 0.000 claims description 9
- 230000036541 health Effects 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000010606 normalization Methods 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 7
- 238000011002 quantification Methods 0.000 claims description 5
- 238000004088 simulation Methods 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000000356 contaminant Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000013139 quantization Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 238000011158 quantitative evaluation Methods 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims description 3
- 238000012351 Integrated analysis Methods 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004227 thermal cracking Methods 0.000 description 2
- 239000010920 waste tyre Substances 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Data Mining & Analysis (AREA)
- General Engineering & Computer Science (AREA)
- Algebra (AREA)
- Geometry (AREA)
- Computational Mathematics (AREA)
- Evolutionary Computation (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Computer Hardware Design (AREA)
- Pure & Applied Mathematics (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- Road Paving Structures (AREA)
Abstract
The application belongs to the technical field of road construction environmental protection evaluation, and discloses an asphalt pavement structure ecological design method considering environmental load, which comprises the following steps: obtaining influence factor data influencing the asphalt pavement structure, constructing a plurality of initial asphalt pavement structures, obtaining technical parameter data and environment parameter data, respectively carrying out structure checking calculation on the plurality of initial asphalt pavement structures to obtain the asphalt pavement structure meeting the pavement specification requirements, carrying out environment load evaluation on the plurality of initial asphalt pavement structures based on the environment parameter data to obtain the asphalt pavement structure with the minimum environment load, and carrying out combined analysis on the asphalt pavement structure meeting the pavement specification requirements and the asphalt pavement structure with the minimum environment load to obtain the asphalt pavement design scheme meeting the pavement performance requirements and with the minimum environment load. The technical scheme of the application can quantitatively and quantitatively evaluate the environmental performance of the asphalt pavement structure, thereby obtaining the asphalt pavement design scheme which meets the requirements and has small environmental load.
Description
Technical Field
The application belongs to the technical field of road construction environmental protection evaluation, and particularly relates to an ecological design method of an asphalt pavement structure considering environmental load.
Background
The rapid development of technology brings about a series of environmental problems while bringing about revolution to people. For the field of traffic infrastructure, asphalt pavement is used as the first choice of paving the current high-grade highway in China, and a large amount of resources, energy consumption, environmental influence and the like brought by the construction stage are not ignored while convenient and comfortable driving experience is brought to people for traveling. Therefore, how to quantitatively evaluate the environmental impact in the construction process of the asphalt pavement structure is also a problem to be solved in the road field.
At present, in the existing asphalt pavement structure design specification, whether various pavement performance indexes of an asphalt pavement structure can meet the requirements of pavement design parameters is mainly considered, and the difference of pavement structure environmental loads cannot be considered.
Disclosure of Invention
The application aims to provide an ecological design method of an asphalt pavement structure taking environmental load into consideration, so as to solve the problems in the prior art.
In order to achieve the above object, the present application provides an ecological design method for an asphalt pavement structure in consideration of environmental load, comprising:
obtaining influence factor data influencing an asphalt pavement structure, constructing a plurality of initial asphalt pavement structures based on the influence factor data, obtaining technical parameter data and environment parameter data of the asphalt pavement, respectively carrying out structure checking calculation on the plurality of initial asphalt pavement structures based on the technical parameter data to obtain an asphalt pavement structure meeting pavement specification requirements, carrying out environment load evaluation on the plurality of initial asphalt pavement structures based on the environment parameter data to obtain an asphalt pavement structure with minimum environment load, and carrying out combination analysis on the asphalt pavement structure meeting pavement specification requirements and the asphalt pavement structure with minimum environment load to obtain an asphalt pavement design scheme meeting pavement performance requirements and with minimum environment load.
Optionally, the process of constructing the initial asphalt pavement structure includes:
acquiring design parameters of an asphalt pavement, and constructing a plurality of initial asphalt concrete pavement structures based on influence factor data influencing the asphalt pavement structure and combining the design parameters;
wherein the influence factor data comprises asphalt pavement equivalent rebound modulus, humidity and temperature data.
Optionally, the process of performing structure checking on the plurality of initial asphalt pavement structures respectively includes:
the technical parameter data comprise fatigue cracking indexes, permanent deformation indexes and low-temperature cracking indexes, and the structure inspection is respectively carried out on a plurality of initial asphalt pavement structures based on the technical parameter data and the design specification of the asphalt pavement of the highway to obtain the asphalt pavement structure meeting the requirement of the pavement specification;
wherein the fatigue cracking index comprises an asphalt mixture layer fatigue cracking index and an inorganic binder stabilizing layer fatigue life index; the permanent deformation index comprises an asphalt mixture layer permanent deformation index and a roadbed top surface vertical compressive strain index; the low-temperature cracking index is a low-temperature cracking index.
Optionally, the environmental parameter data includes an asphalt pavement construction direct emission parameter and an asphalt pavement construction indirect emission parameter, and the asphalt pavement construction direct emission parameter and the asphalt pavement construction indirect emission parameter both include environmental impact indexes;
wherein the environmental impact index comprises a greenhouse effect index, an acidification effect index, a photochemical smog formation index, a human health damage index and a water eutrophication index.
Optionally, the process of evaluating environmental load of the initial asphalt pavement structures includes:
and quantifying a direct discharge list and an indirect discharge list of each construction and production stage of the asphalt pavement, carrying out characterization calculation of different environmental impact indexes based on the quantification result and the environmental parameters to obtain a characterization result of the environmental impact indexes, and finishing quantitative evaluation of the environmental load of the asphalt pavement structure.
Optionally, the quantized result includes a discharge list quantized result of the raw material production stage of asphalt pavement construction, an indirect discharge list quantized result of the asphalt pavement construction, and a direct discharge list quantized result of the asphalt pavement construction.
Optionally, the process of obtaining the quantitative result of the emission list in the production stage of the raw materials for constructing the asphalt pavement comprises the following steps:
acquiring various pollutant emission list data and waste raw material data of the production stage of the relevant raw materials of the asphalt pavement structure, quantitatively analyzing the environmental value of the waste raw material data in the cyclic utilization process by using an equivalent substitution method, and carrying out emission list quantization by combining the various pollutant emission list data based on the analysis result to obtain an emission list quantization result of the production stage of the raw materials of the asphalt pavement construction;
wherein, the calculation formula for obtaining the quantitative result of the emission list in the production stage of the raw materials for constructing the asphalt pavement is as follows:
E ij ＝R i -R′ i +D i -D′ i
wherein: j=1, …, n being n disposal processes in the waste recycling process, respectively; e (E) ij Is the emission amount of the ith pollutant in the jth waste disposal process; r is R i An ith pollutant discharge amount that is raw material consumed in the waste disposal process; di is the energy consumption in the waste disposal process and the i-th pollutant emission amount directly generated; r's' i The ith pollutant emissions of raw materials avoided for the waste disposal product; d'. i Avoiding energy consumption and directly generated ith pollutant emission amount for waste disposal products; e (E) i The i-th pollutant discharge amount of the waste in the asphalt pavement system; omega j The j-th disposal mode of the waste.
Optionally, the process of obtaining the quantitative result of the indirect emission list in the asphalt pavement construction stage includes: the method comprises the steps of obtaining pollutant discharge amount data of each stage in an asphalt pavement structure construction stage, and carrying out integrated analysis on the pollutant discharge amount data of each stage to obtain an indirect discharge list quantification result of the asphalt pavement construction stage;
the calculation formula for obtaining the quantitative result of the indirect emission list in the asphalt pavement construction stage is as follows:
wherein: m=1, 2,3 are asphalt concrete mixing stage, asphalt concrete transportation stage, asphalt pavement construction stage; n is the energy type used in the construction stage of the asphalt pavement; i Ei Is the indirect discharge amount of the ith pollutant in the asphalt pavement construction stage; e (E) mn N energy consumption in the m-th process for constructing the asphalt pavement; f (F) i Emission coefficient of the i-th pollutant of n energy sources.
Optionally, the calculating process for obtaining the quantitative result of the direct discharge list in the asphalt pavement construction stage includes:
D ij ＝U m ·Q·(T/t)·c i ·10 -6
wherein: j=1, 2 and 3 are respectively asphalt concrete mixing, asphalt concrete transportation and asphalt pavement construction; DE (DE) i The direct discharge amount of the ith pollutant in the asphalt pavement construction stage; d (D) ij The discharge amount of the asphalt-based pollutant i in the j-th stage; u (U) m The method is to directly discharge the usage amount of the asphalt-based material in the simulation experiment; q is the gas collection flow controlled by the gas valve in the test process; t is the working time of each stage in the actual engineering; t is the ventilation time of the sampling bag in the test process; c i Is the concentration of the component i to be measured in the sampling bag.
Optionally, the calculating process for obtaining the characterization result of the environmental impact index includes:
normalizing the characterization result:
wherein k=1, 2,3,4,5 are respectively greenhouse effect, acidification effect, photochemical smog formation, human health damage and water eutrophication; e (E) k Constructing a characterization result of the kth environmental impact index for the asphalt pavement; z is the number of contaminant items; TF (TF) ki In order to calculate the j environmental impact index, the characterization factor corresponding to the ith pollutant can be obtained by inquiring a ReCiPe environmental impact evaluation method; n (N) k Constructing a normalization result of the kth environmental influence for the asphalt pavement; f (F) k And constructing a normalization coefficient of the kth environmental influence for the asphalt pavement.
The application has the technical effects that:
according to the ecological design method of the asphalt pavement structure considering the environmental load, a plurality of initial asphalt pavement structures are constructed based on influence factor data, technical parameter data and environmental parameter data of an asphalt pavement are obtained, structural inspection is carried out on the initial asphalt pavement structures based on the technical parameter data respectively to obtain an asphalt pavement structure meeting the requirement of pavement specifications, environmental load evaluation is carried out on the initial asphalt pavement structures based on the environmental parameter data to obtain an asphalt pavement structure with the minimum environmental load, and combination analysis is carried out on the asphalt pavement structure meeting the requirement of pavement specifications and the asphalt pavement structure with the minimum environmental load to obtain an asphalt pavement design scheme meeting the requirement of pavement performance and with the minimum environmental load;
aiming at the problem that the environmental performance difference of different pavement structures cannot be embodied in the existing design method of the asphalt pavement structure, the application quantificationally and appraises the environmental performance of the asphalt pavement structure, integrates the existing asphalt pavement design system into the evaluation system and quantification method aiming at the environmental load of the asphalt pavement structure, and has important reference value for the omnibearing evaluation of the asphalt pavement design scheme.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a flow chart of an embodiment of the present application;
FIG. 2 is a graph showing the comparison of normalized results of evaluation of ecological performance of asphalt pavement in the example of the present application.
Detailed Description
Various exemplary embodiments of the application will now be described in detail, which should not be considered as limiting the application, but rather as more detailed descriptions of certain aspects, features and embodiments of the application.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the application. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Although the application has been described with reference to a preferred method, any method similar or equivalent to those described herein can be used in the practice or testing of the present application. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methodologies associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the application described herein without departing from the scope or spirit of the application. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present application. The specification and examples of the present application are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
As shown in fig. 1-2, in this embodiment, an ecological design method for an asphalt pavement structure considering environmental load is provided, which includes:
obtaining influence factor data influencing an asphalt pavement structure, constructing a plurality of initial asphalt pavement structures based on the influence factor data, obtaining technical parameter data and environment parameter data of the asphalt pavement, respectively carrying out structure checking calculation on the plurality of initial asphalt pavement structures based on the technical parameter data to obtain an asphalt pavement structure meeting pavement specification requirements, carrying out environment load evaluation on the plurality of initial asphalt pavement structures based on the environment parameter data to obtain an asphalt pavement structure with minimum environment load, and carrying out combination analysis on the asphalt pavement structure meeting pavement specification requirements and the asphalt pavement structure with minimum environment load to obtain an asphalt pavement design scheme meeting pavement performance requirements and with minimum environment load.
After the pavement scheme which does not meet the pavement structure checking calculation is eliminated, the asphalt pavement design scheme with the minimum environmental load is finally optimized.
Step one, determining design parameters of an asphalt pavement and initially simulating an asphalt concrete pavement structure;
firstly, collecting traffic data of asphalt pavement, roadbed soil quality, equivalent rebound modulus, humidity, temperature and other factors influencing pavement structure. And then based on the design parameters of the asphalt pavement, three or more structural combinations of the asphalt pavement and the thickness of each layer are initially simulated.
The design parameters refer to the asphalt pavement design specification, and corresponding parameters can be obtained according to the selected materials and the positions of the pavement;
step two, determining technical parameters of the pavement, and carrying out experimental calculation on the asphalt pavement structure;
firstly, dividing technical parameter indexes of an asphalt pavement into fatigue cracking, permanent deformation and low-temperature cracking, wherein the fatigue cracking comprises two indexes of fatigue cracking of an asphalt mixture layer and fatigue life of an inorganic binder stabilizing layer; the permanent deformation comprises two indexes of permanent deformation of the asphalt mixture layer and vertical compressive strain of the top surface of the roadbed; the low temperature cracking is a low temperature cracking index. And then according to the road technical parameter evaluation index and the calculation method in the highway asphalt pavement design Specification (JTG D50-2017), respectively checking the road surface structure of the primary road surface structure, and screening the asphalt pavement structure meeting the road surface specification requirements.
Step three, determining road surface environmental parameters, and evaluating the asphalt road surface environmental load;
the environmental parameters of the asphalt pavement are divided into direct emission of asphalt pavement construction and indirect emission of asphalt pavement construction, wherein the two environmental parameters respectively comprise five indexes of greenhouse effect, acidification effect, photochemical smog formation, human health damage and water eutrophication. Compared with the environmental load of different asphalt pavement structures, the asphalt pavement design scheme meeting the pavement performance requirement and having the minimum environmental load is preferred.
The method can be used for evaluating the environmental load of the asphalt pavement in the third step, and comprises the following specific steps:
firstly, quantifying an emission list in the production stage of raw materials for asphalt pavement construction;
for raw materials commonly used in asphalt pavement construction, such as asphalt, modified asphalt, aggregate, mineral powder and the like, which are directly produced and applied, various pollutant emission list data of raw material production stages related to asphalt pavement structures are directly collected. And for the related raw materials for recycling the wastes applied to the asphalt pavement structure, the environmental value of the wastes in all recycling processes is quantified through the idea of equivalent replacement, so that the method is different from the calculation process which does not usually consider the environmental value of the wastes, and the specific calculation process is shown in a formula (1) and a formula (2).
E ij ＝R i -R′ i +D i -D′ i (1)
Wherein:
j=1, …, n respectively representing n disposal processes in the waste recycling process; e (E) ij -the emission (kg) of the ith pollutant in the treatment of the jth waste; r is R i -an i-th pollutant emission (kg) of the consumed raw materials in the waste disposal process; d (D) i -energy consumption during waste disposal and i-th pollutant emissions (kg) directly produced; r's' i -the ith pollutant emission (kg) of the raw materials avoided by the waste disposal product; d'. i -energy consumption avoided by the waste disposal product and i-th pollutant emissions (kg) directly produced; e (E) i -the i-th pollutant emission (kg) of the waste in the asphalt pavement system; omega j -proportion (%) of the j-th disposal mode of waste;
secondly, quantifying an indirect discharge list in the asphalt pavement construction stage;
the construction stage of the asphalt pavement structure is divided into three specific links of asphalt concrete mixing, asphalt concrete transportation and asphalt pavement construction, pollutant discharge amounts of all links of the asphalt pavement construction stage are calculated by applying a formula (3) through arrangement and analysis of discharge basic data in the three-stage process, and finally an indirect discharge list result of the asphalt pavement structure construction stage is obtained through integration.
Wherein: m=1, 2,3 respectively represent asphalt concrete mixing, asphalt concrete transportation, asphalt pavement construction; n-energy types used in the construction stage of the asphalt pavement; IE (information element) i -indirect emission (kg) of the ith pollutant in the asphalt pavement construction phase; e (E) mn -n energy consumption (kg) of the m-th process of asphalt pavement construction; f (F) i -emission coefficient (kg/kg) of the i-th type of pollutant of the n energy sources.
Thirdly, quantifying a direct discharge list in the asphalt pavement construction stage;
in the direct emission simulation test of the asphalt pavement construction stage, gas is generated through a smoke generating device capable of heating asphalt cement, and is collected to a sampling bag by using a ventilating pipeline provided with a gas valve, and gas generation and collection tests at mixing temperature and heat preservation temperature are respectively carried out. In the test process, the temperature of the three stages is required to be ensured to be consistent with that in the actual engineering. The concentration of the directly discharged polluted gas in the sampling bag after gas collection is measured by related instruments and equipment, and the calculation method of various polluted gases is shown in formulas (4) and (5):
D ij ＝U m ·Q·(T/t)·c i ·10 -6 (5)
wherein: j=1, 2,3 respectively represent asphalt concrete mixing, asphalt concrete transportation, asphalt pavement construction；DE i -direct emission (kg) of the ith pollutant in the asphalt pavement construction phase; d (D) ij -the amount of emission (kg) of bitumen-based contaminants i at stage j; u (U) m -the amount of bitumen-based material used (kg) in the direct emission simulation experiment; q-is the gas collection flow (L/min) controlled by the gas valve during the test; t-is the working time (min) of each stage in the actual engineering; t-is the aeration time (min) of the sampling bag during the test; c i -the concentration (mg/L) of the component i to be measured in the sampling bag.
Fourthly, quantitatively evaluating the environmental load of the asphalt pavement structure;
dividing the direct emission and indirect emission results in the asphalt pavement construction process into five environmental influences of greenhouse effect, acidification effect, photochemical smog formation, human health damage and water eutrophication, and carrying out characteristic calculation of each environmental influence to reflect the latent value of the specific environmental influence caused by each substance emitted in the asphalt pavement construction process, wherein the specific calculation method is shown in a formula (6):
wherein k=1, 2,3,4,5 respectively represent greenhouse effect, acidification effect, photochemical smog formation, human health damage and water eutrophication; e (E) k The characterization result of the kth environmental impact index of asphalt pavement construction is represented; z represents the number of contaminant items; TF (TF) ki When the j environmental impact index is calculated, the characterization factor (kg eq/kg) corresponding to the ith pollutant can be obtained by inquiring the ReCiPe environmental impact evaluation method.
After the characteristic evaluation of the environmental impact of asphalt pavement construction, in order to further compare the relative sizes of the five environmental impact, the characteristic result is normalized, so that the environmental impact result is converted into the same dimension, and the specific calculation method is shown in the formula (7):
wherein: n (N) k Representing a normalization result of the k environmental impact of asphalt pavement construction; f (F) k And the normalized coefficient representing the k environmental impact of asphalt pavement construction.
Taking the construction requirement in the first-level highway asphalt pavement project engineering of certain northern province in China as an example, the environmental load-considered asphalt pavement structure ecological design method provided by the embodiment is applied, the indirect emission and the indirect emission of pollutants in the pavement construction process are considered, and the pavement construction scheme is optimized from the two aspects of the technical performance and the environmental performance of the asphalt pavement.
Determining design parameters of an asphalt pavement, and initially simulating an asphalt concrete pavement structure:
according to traffic investigation analysis of road surface design road sections, the annual average daily traffic volume of the sections is 4250 vehicles/day, the annual growth rate of the traffic volume is 3.0%, the design axle load is 100KN, the design year is 15 years, the equivalent rebound modulus of soil base is 50MPa, and the local standard equivalent temperature is 21.8 ℃. According to the calculation method in annex A of highway asphalt pavement design Specification (JTG D50-2017) in China, the number of times of the accumulated action of the equivalent design axle load of the permanent deformation and fatigue cracking of the asphalt mixture layer is 45,752,819, the number of times of the accumulated action of the equivalent axle load corresponding to the vertical compressive strain of the top surface of the roadbed is 92,547,156, and the structure of the initial three asphalt concrete pavements is shown in Table 1.
TABLE 1
Determining technical parameters of the pavement, and carrying out structural checking calculation of the asphalt pavement:
dividing technical parameter indexes of the asphalt pavement into fatigue cracking, permanent deformation and low-temperature cracking, wherein the fatigue cracking comprises two indexes of fatigue cracking of an asphalt mixture layer and fatigue life of an inorganic binder stabilizing layer; the permanent deformation comprises two indexes of permanent deformation of the asphalt mixture layer and vertical compressive strain of the top surface of the roadbed; the low temperature cracking is a low temperature cracking index. According to the road technical parameter evaluation index and the calculation method in the highway asphalt pavement design Specification (JTG D50-2017), respectively checking the road structure of the primary road structure, checking, wherein the permanent deformation index of the first road design scheme does not meet the specification requirement, the second scheme and the third scheme meet the various index requirements, and selecting the second scheme and the third scheme for subsequent evaluation.
Determining road surface environmental parameters, and evaluating the asphalt road surface environmental load:
the environmental parameters of the asphalt pavement are divided into direct emission of asphalt pavement construction and indirect emission of asphalt pavement construction, wherein the two environmental parameters respectively comprise five indexes of greenhouse effect, acidification effect, photochemical smog formation, human health damage and water eutrophication.
And (3) quantifying an emission list in the production stage of the raw materials for constructing the asphalt pavement:
in the production process emission data of raw materials such as aggregates, broken stones and the like commonly used in asphalt pavement construction in the example, the main reference research and actual investigation data. For the rubber asphalt in the third asphalt pavement design scheme, the production of rubber powder relates to the recycling of waste tires, so the environmental value of waste per se in all recycling processes is quantified through formulas (1) and (2), wherein the proportion of each treatment mode, the regenerated rubber, the rubber powder and thermal cracking refer to domestic statistical data, the proportion of heat energy utilization and landfill refers to foreign conditions, the proportion of heat energy utilization, the regenerated rubber, the thermal cracking and landfill in the calculation process is 66.8%, 18.0%, 9.8% and 5.4%, and specific emission list data are shown in table 1. The emission inventory data for the 20% blended rubber asphalt is calculated as shown in table 3, and the emission data per kg asphalt in other asphalt concrete facings is mainly referred to the european asphalt institute 2012 study data. Finally, according to the total consumption of the engineering, emission data of the two scheme asphalt pavement raw material production stages are calculated and obtained as shown in table 4, and table 2 is an emission list of each disposal mode of the waste tires;
TABLE 2
TABLE 3 Table 3
TABLE 4 Table 4
And (3) quantifying an indirect discharge list in the asphalt pavement construction stage:
dividing indirect discharge of the construction stage of the asphalt pavement structure into three specific links of asphalt concrete mixing, asphalt concrete transportation and asphalt pavement construction, calculating to obtain pollutant discharge amount of each link of the construction stage of the asphalt pavement by using a formula (3), and finally integrating to obtain two scheme indirect discharge list results of the construction stage of the asphalt pavement structure as shown in tables 5 and 6, wherein table 5 is a scheme two-stage indirect discharge list, and table 6 is a scheme three-stage indirect discharge list;
TABLE 5
TABLE 6
And (3) quantifying a direct discharge list in the asphalt pavement construction stage:
in the direct emission simulation test of the asphalt pavement construction stage, gas is generated through a smoke generating device capable of heating asphalt cement, and is collected to a sampling bag by using a ventilating pipeline provided with a gas valve, and gas generation and collection tests at mixing temperature and heat preservation temperature are respectively carried out. In the test process, the temperature of the three stages is required to be ensured to be consistent with that in the actual engineering. The concentration of the directly discharged polluted gas in the sampling bag after the gas collection is measured by related instruments and equipment, the calculation method of various polluted gases is shown in formulas (4) and (5), the direct discharge list of the asphalt pavement is shown in table 7,
TABLE 7
Quantitatively evaluating the environmental load of the asphalt pavement structure;
dividing the direct emission and indirect emission results in the construction process of the asphalt pavement into five environmental influences including greenhouse effect, acidification effect, photochemical smog formation, human health damage and water eutrophication, wherein the five environmental influences are used as the environmental influence types for quantitative evaluation of the evaluation ecological performance, and the influence factors and main pollutants are classified as shown in a table 8, wherein the table 8 is the environmental influence types and the main pollutants;
TABLE 8
And carrying out characterization processing on the emission data list in the asphalt pavement construction process according to the selected characterization factors, combining pollutants causing the same environmental influence through the step, and converting the result of the list analysis into a unified unit by using the characterization factors. In order to further compare the relative sizes of the environmental influences, normalization factors are needed to normalize the characterization results, and finally a single environmental influence index value is formed, so that the comparison situation of the data of different environmental influence types is described. The results of the asphalt pavement ecological performance normalization index are shown in table 9.
TABLE 9
According to the normalized evaluation result of the environmental impact, the differences between the ecological performances of different asphalt pavement designs can be compared, as shown in fig. 2. The larger the normalization result is, the larger the environmental load caused by the construction of the asphalt pavement is, and the poorer the ecological performance is. The figure shows that the environmental impact caused in the construction process of the asphalt pavement structure is mainly photochemical smog generation, greenhouse effect and acidification effect, wherein the pavement structure of the scheme II is lower by 7.6% than that of the scheme III, and the asphalt pavement structure of the scheme II shows better ecological benefit on the premise of meeting the design requirement of the asphalt pavement structure.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (10)
1. An ecological design method of an asphalt pavement structure taking environmental load into consideration is characterized by comprising the following steps:
obtaining influence factor data influencing an asphalt pavement structure, constructing a plurality of initial asphalt pavement structures based on the influence factor data, obtaining technical parameter data and environment parameter data of the asphalt pavement, respectively carrying out structure checking calculation on the plurality of initial asphalt pavement structures based on the technical parameter data to obtain an asphalt pavement structure meeting pavement specification requirements, carrying out environment load evaluation on the plurality of initial asphalt pavement structures based on the environment parameter data to obtain an asphalt pavement structure with minimum environment load, and carrying out combination analysis on the asphalt pavement structure meeting pavement specification requirements and the asphalt pavement structure with minimum environment load to obtain an asphalt pavement design scheme meeting pavement performance requirements and with minimum environment load.
2. The method for ecologically designing an asphalt pavement structure in consideration of environmental load according to claim 1, wherein,
the process of constructing the initial asphalt pavement structure includes:
acquiring design parameters of an asphalt pavement, and constructing a plurality of initial asphalt concrete pavement structures based on influence factor data influencing the asphalt pavement structure and combining the design parameters;
wherein the influence factor data comprises asphalt pavement equivalent rebound modulus, humidity and temperature data.
3. The method for ecologically designing an asphalt pavement structure in consideration of environmental load according to claim 1, wherein,
the process for respectively carrying out structure checking calculation on a plurality of initial asphalt pavement structures comprises the following steps:
the technical parameter data comprise fatigue cracking indexes, permanent deformation indexes and low-temperature cracking indexes, and the structure inspection is respectively carried out on a plurality of initial asphalt pavement structures based on the technical parameter data and the design specification of the asphalt pavement of the highway to obtain the asphalt pavement structure meeting the requirement of the pavement specification;
wherein the fatigue cracking index comprises an asphalt mixture layer fatigue cracking index and an inorganic binder stabilizing layer fatigue life index; the permanent deformation index comprises an asphalt mixture layer permanent deformation index and a roadbed top surface vertical compressive strain index; the low-temperature cracking index is a low-temperature cracking index.
4. The method for ecologically designing an asphalt pavement structure in consideration of environmental load according to claim 1, wherein,
the environment parameter data comprise an asphalt pavement construction direct emission parameter and an asphalt pavement construction indirect emission parameter, and the asphalt pavement construction direct emission parameter and the asphalt pavement construction indirect emission parameter both comprise environment influence indexes;
wherein the environmental impact index comprises a greenhouse effect index, an acidification effect index, a photochemical smog formation index, a human health damage index and a water eutrophication index.
5. The method for ecologically designing an asphalt pavement structure in consideration of environmental load according to claim 1, wherein,
the process for evaluating the environmental load of the initial asphalt pavement structures comprises the following steps:
and quantifying a direct discharge list and an indirect discharge list of each construction and production stage of the asphalt pavement, carrying out characterization calculation of different environmental impact indexes based on the quantification result and the environmental parameters to obtain a characterization result of the environmental impact indexes, and finishing quantitative evaluation of the environmental load of the asphalt pavement structure.
6. The method for ecologically designing an asphalt pavement structure in consideration of environmental load according to claim 5, wherein,
the quantized results comprise a discharge list quantized result of an asphalt pavement construction raw material production stage, an indirect discharge list quantized result of an asphalt pavement construction stage and a direct discharge list quantized result of the asphalt pavement construction stage.
7. The method for ecologically designing an asphalt pavement structure in consideration of environmental load according to claim 6, wherein,
the process for obtaining the quantitative result of the discharge list in the production stage of the raw materials for constructing the asphalt pavement comprises the following steps:
acquiring various pollutant emission list data and waste raw material data of the production stage of the relevant raw materials of the asphalt pavement structure, quantitatively analyzing the environmental value of the waste raw material data in the cyclic utilization process by using an equivalent substitution method, and carrying out emission list quantization by combining the various pollutant emission list data based on the analysis result to obtain an emission list quantization result of the production stage of the raw materials of the asphalt pavement construction;
wherein, the calculation formula for obtaining the quantitative result of the emission list in the production stage of the raw materials for constructing the asphalt pavement is as follows:
E ij ＝R i -R i ′+D i -D i ′
wherein: j=1, …, n being n disposal processes in the waste recycling process, respectively; e (E) ij Is the emission amount of the ith pollutant in the jth waste disposal process; r is R i An ith pollutant discharge amount that is raw material consumed in the waste disposal process; di is the energy consumption in the waste disposal process and the i-th pollutant emission amount directly generated; r is R i ' ith pollutant emissions of raw materials avoided for waste disposal products; d (D) i ' energy consumption avoided for waste disposal products and i-th pollutant emissions directly produced; e (E) i The i-th pollutant discharge amount of the waste in the asphalt pavement system; omega j The j-th disposal mode of the waste.
8. The method for ecologically designing an asphalt pavement structure in consideration of environmental load according to claim 6, wherein,
the process for obtaining the quantitative result of the indirect emission list in the asphalt pavement construction stage comprises the following steps: the method comprises the steps of obtaining pollutant discharge amount data of each stage in an asphalt pavement structure construction stage, and carrying out integrated analysis on the pollutant discharge amount data of each stage to obtain an indirect discharge list quantification result of the asphalt pavement construction stage;
the calculation formula for obtaining the quantitative result of the indirect emission list in the asphalt pavement construction stage is as follows:
wherein: m=1, 2,3 are asphalt concrete mixing stage, asphalt concrete transportation stage, asphalt pavement construction stage; n is the energy type used in the construction stage of the asphalt pavement; i Ei Is the ith pollutant in the construction stage of the asphalt pavementIs a waste gas, is an indirect discharge amount of (a); e (E) mn N energy consumption in the m-th process for constructing the asphalt pavement; f (F) i Emission coefficient of the i-th pollutant of n energy sources.
9. The method for ecologically designing an asphalt pavement structure in consideration of environmental load according to claim 6, wherein,
the calculation process for obtaining the quantitative result of the direct discharge list in the asphalt pavement construction stage comprises the following steps:
D ij ＝U m ·Q·(T/t)·c i ·10 -6
wherein: j=1, 2 and 3 are respectively asphalt concrete mixing, asphalt concrete transportation and asphalt pavement construction; DE (DE) i The direct discharge amount of the ith pollutant in the asphalt pavement construction stage; d (D) ij The discharge amount of the asphalt-based pollutant i in the j-th stage; u (U) m The method is to directly discharge the usage amount of the asphalt-based material in the simulation experiment; q is the gas collection flow controlled by the gas valve in the test process; t is the working time of each stage in the actual engineering; t is the ventilation time of the sampling bag in the test process; c i Is the concentration of the component i to be measured in the sampling bag.
10. The method for ecologically designing an asphalt pavement structure in consideration of environmental load according to claim 5, wherein,
the calculation process for obtaining the characterization result of the environmental impact index comprises the following steps:
normalizing the characterization result:
wherein k=1, 2,3,4,5 are respectively greenhouse effect, acidification effect, photochemical smog formation, human health damage and water eutrophication; e (E) k Constructing a characterization result of the kth environmental impact index for the asphalt pavement; z is the number of contaminant items; TF (TF) ki In order to calculate the j environmental impact index, the characterization factor corresponding to the ith pollutant can be obtained by inquiring a ReCiPe environmental impact evaluation method; n (N) k Constructing a normalization result of the kth environmental influence for the asphalt pavement; f (F) k And constructing a normalization coefficient of the kth environmental influence for the asphalt pavement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310944113.6A CN116894348A (en) | 2023-07-28 | 2023-07-28 | Asphalt pavement structure ecological design method considering environmental load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310944113.6A CN116894348A (en) | 2023-07-28 | 2023-07-28 | Asphalt pavement structure ecological design method considering environmental load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116894348A true CN116894348A (en) | 2023-10-17 |
Family
ID=88312045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310944113.6A Pending CN116894348A (en) | 2023-07-28 | 2023-07-28 | Asphalt pavement structure ecological design method considering environmental load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116894348A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520333A (en) * | 2018-03-13 | 2018-09-11 | 北京工业大学 | A kind of Ecological Design Method of steel slag asphalt concrete material |
| CN114118834A (en) * | 2021-11-30 | 2022-03-01 | 哈尔滨工业大学 | Method for evaluating full life cycle environmental influence of asphalt pavement |
| CN114357704A (en) * | 2021-11-30 | 2022-04-15 | 天津市交通科学研究院 | Energy consumption and carbon dioxide emission quantification method for asphalt pavement in construction period |
| CN115271512A (en) * | 2022-08-10 | 2022-11-01 | 北京工业大学 | Uncertainty analysis method for carbon emission accounting of asphalt concrete surface layer pavement |
| CN115471058A (en) * | 2022-09-02 | 2022-12-13 | 中国市政工程华北设计研究总院有限公司 | Method for evaluating substance metabolism and environmental load effect thereof in road construction period |
| CN115684567A (en) * | 2022-10-25 | 2023-02-03 | 哈尔滨工业大学 | Method for evaluating life cycle of regenerated asphalt pavement based on physical fine separation process |
| CN116430020A (en) * | 2023-06-07 | 2023-07-14 | 北京工业大学 | Asphalt-based material ecological performance evaluation method |
-
2023
- 2023-07-28 CN CN202310944113.6A patent/CN116894348A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520333A (en) * | 2018-03-13 | 2018-09-11 | 北京工业大学 | A kind of Ecological Design Method of steel slag asphalt concrete material |
| CN114118834A (en) * | 2021-11-30 | 2022-03-01 | 哈尔滨工业大学 | Method for evaluating full life cycle environmental influence of asphalt pavement |
| CN114357704A (en) * | 2021-11-30 | 2022-04-15 | 天津市交通科学研究院 | Energy consumption and carbon dioxide emission quantification method for asphalt pavement in construction period |
| CN115271512A (en) * | 2022-08-10 | 2022-11-01 | 北京工业大学 | Uncertainty analysis method for carbon emission accounting of asphalt concrete surface layer pavement |
| CN115471058A (en) * | 2022-09-02 | 2022-12-13 | 中国市政工程华北设计研究总院有限公司 | Method for evaluating substance metabolism and environmental load effect thereof in road construction period |
| CN115684567A (en) * | 2022-10-25 | 2023-02-03 | 哈尔滨工业大学 | Method for evaluating life cycle of regenerated asphalt pavement based on physical fine separation process |
| CN116430020A (en) * | 2023-06-07 | 2023-07-14 | 北京工业大学 | Asphalt-based material ecological performance evaluation method |
Non-Patent Citations (4)
| Title |
|---|
| 杨博 等: "沥青路面建设阶段能耗与排放量化预估方法研究", 中外公路, vol. 34, no. 1, pages 7 - 13 * |
| 石小武 等: "沥青路面结构与材料的寿命周期决策方法", 公路, no. 3, pages 28 - 31 * |
| 贾晓娟;赵丽;余剑英;高丽;徐松;: "沥青混凝土生命周期环境影响评价研究", 新型建筑材料, no. 11 * |
| 颜可珍;高素云;胡;: "基于集对分析-可变模糊集的热拌沥青路面全生命周期能耗和环境排放评价模型", 公路工程, no. 02 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ganguly et al. | National Clean Air Programme (NCAP) for Indian cities: Review and outlook of clean air action plans | |
| Zhang et al. | BEPAS—a life cycle building environmental performance assessment model | |
| Faruqi et al. | A mini review of construction and demolition waste management in India | |
| Yaro et al. | Comparison of Response Surface Methodology and Artificial Neural Network approach in predicting the performance and properties of palm oil clinker fine modified asphalt mixtures | |
| Harvey et al. | Pavement life cycle assessment workshop: discussion summary and guidelines | |
| De Lassio et al. | Case study: LCA methodology applied to materials management in a Brazilian residential construction site | |
| Colbert et al. | A hybrid strategy in selecting diverse combinations of innovative sustainable materials for asphalt pavements | |
| CN106525704A (en) | Method for predicting remaining life of bituminous pavement | |
| CN114970102B (en) | Evaluation method for full-chain ecological design, construction and operation and maintenance of asphalt pavement | |
| CN114118834A (en) | Method for evaluating full life cycle environmental influence of asphalt pavement | |
| Xu et al. | How to minimize the embodied environmental impact of green building envelope? An automatic optimization method | |
| Varma et al. | A framework based on engineering performance and sustainability to assess the use of new and recycled materials in pavements | |
| CN116894348A (en) | Asphalt pavement structure ecological design method considering environmental load | |
| Lu et al. | Pavement rehabilitation policy for reduced life-cycle cost and environmental impact based on multiple pavement performance measures | |
| CN115471058A (en) | Method for evaluating substance metabolism and environmental load effect thereof in road construction period | |
| Isya et al. | Effect of green road concept on waste management on road construction in the Banda Aceh city | |
| CN201648909U (en) | Cold regeneration layer structure for broken road surface | |
| CN107572896B (en) | A kind of AC-20 modified asphalt mixture design method based on pavement performance | |
| CN116910875B (en) | Asphalt pavement full life cycle maintenance planning method considering ecological benefits | |
| Roh et al. | Environmental impact assessment of polymer cement mortar filling method for structure maintenance | |
| Mallick et al. | Sustainable Pavement Engineering | |
| Xiao et al. | Effects of mountain urbanization on greenhouse gas emissions from municipal solid waste management practices in Southwest China | |
| Lin | Carbon footprint evaluation & certification system for the building industry–building, landscaping and interior renovation in Taiwan | |
| Zhou | Development of a life-cycle assessment tool for pavement preservation and maintenance of flexible and rigid pavements | |
| Azam et al. | Life Cycle Assessment and Pavement Performance of Construction and Demolition Waste in Pavement Applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |