CN117057650A - Ecological construction evaluation method for whole asphalt pavement construction process - Google Patents
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Abstract
The application belongs to the technical field of evaluation of green sustainable products of infrastructure, and discloses an ecological construction evaluation method for the whole construction process of an asphalt pavement, which comprises the following steps: performing stage analysis and consumption emission analysis on the whole construction process of the asphalt pavement, constructing a multi-stage comprehensive evaluation index system based on analysis results, performing weighted calculation on all levels of comprehensive evaluation decision indexes in the multi-stage comprehensive evaluation index system through a priority diagram method to obtain weight data of all indexes in all levels of comprehensive evaluation decision indexes, obtaining engineering data of the whole construction process of the asphalt pavement, and performing combined calculation on the engineering data and the weight data to obtain the comprehensive evaluation decision indexes reflecting the ecological benefits of the whole construction process of the asphalt pavement. The technical scheme of the application can evaluate the whole process and the whole elements in the mixing stage, the transportation stage and the paving and rolling stage in the construction process of the asphalt pavement.
Description
Technical Field
The application belongs to the technical field of evaluation of green sustainable products of infrastructure, and particularly relates to an ecological construction evaluation method for the whole construction process of an asphalt pavement.
Background
By the end of 2021, the total mileage of the highway and the total mileage of the expressway in China are stable in the world, and the asphalt pavement has remarkable advantages in the aspects of driving comfort, construction maintenance and the like, is a main pavement type in the expressway in China, and has the proportion of more than 90 percent on the expressway pavement. However, a great amount of energy is consumed in the construction process of the asphalt pavement and various environmental influence problems are generated, so that the environment load in the construction process of the asphalt pavement is quantitatively evaluated by the system, and a green development evaluation system of the asphalt pavement is established to meet the current development demands.
In recent years, the green evaluation research of construction and construction around asphalt pavement is increasing, but a set of scientific and comprehensive evaluation method and evaluation index system are not established and formed yet.
Disclosure of Invention
The application aims to provide an ecological construction evaluation method for the whole construction process of an asphalt pavement, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the application provides an ecological construction evaluation method for the whole process of asphalt pavement construction, which comprises the following steps:
performing stage analysis and consumption emission analysis on the whole construction process of the asphalt pavement, constructing a multi-stage comprehensive evaluation index system based on analysis results, performing weighted calculation on all levels of comprehensive evaluation decision indexes in the multi-stage comprehensive evaluation index system through a priority diagram method to obtain weight data of all indexes in all levels of comprehensive evaluation decision indexes, obtaining engineering data of the whole construction process of the asphalt pavement, and performing combined calculation on the engineering data and the weight data to obtain the comprehensive evaluation decision indexes reflecting the ecological benefits of the whole construction process of the asphalt pavement.
Optionally, the multi-stage comprehensive evaluation index system comprises a multi-stage energy consumption index and a multi-stage pollutant emission index.
Optionally, the multi-level energy consumption index comprises a primary energy consumption index, a secondary energy consumption index and a tertiary energy consumption index;
the multi-stage pollutant discharge index comprises a pollutant discharge primary index, a pollutant discharge secondary index and a pollutant discharge tertiary index.
Optionally, the primary energy consumption index includes an energy consumption index a, and the secondary energy consumption index is an energy consumption index of different stages of the primary energy consumption index, including an energy consumption index a of a mixing stage 1 Energy consumption index A in transportation stage 2 And energy consumption index A in paving and rolling stage 3 The energy consumption three-level index is an energy consumption type index of each energy consumption two-level index, and comprises a mixing stage fuel consumption index A 11 Electric power consumption index A in mixing stage 12 Fuel consumption index A in transportation stage 21 And fuel consumption index A in spreading and rolling stage 31 ；
The first pollutant discharge index comprises a pollutant discharge index B, and the second pollutant discharge index is a pollutant discharge index of different stages of the first pollutant discharge index and comprises a pollutant discharge index B of a mixing stage 1 Pollutant emission index B in transportation stage 2 And pollutant discharge index B in paving and rolling stage 3 The pollutant emission three-level index is a pollutant emission type index of each pollutant emission two-level index and comprises a greenhouse effect index B in a mixing stage 11 Ozone layer destruction index B in mixing stage 12 Environmental acidification index B in mixing stage 13 Human health damage index B in mixing stage 14 Greenhouse effect index B in transportation stage 21 Ozone layer destruction index B in transportation stage 22 Environmental acidification index B in transportation stage 23 Index B of human health damage during transportation 24 Greenhouse effect index B in paving and rolling stage 31 Stage of spreading and rollingOzone layer destruction index B 32 Environmental acidification index B in paving and rolling stage 33 And human health damage index B in the paving and rolling stage 34 。
Optionally, the process of obtaining the weight data of each index includes:
constructing a chessboard graph, comparing each index in the comprehensive evaluation decision indexes of each level in pairs to obtain score data of each index, and transversely summing the score data of each index to obtain total priority number data of each indexSumming the total priority numbers of the indexes to obtain priority number sum data n (n-1)/2+0.5n, and based on the total priority number dataAnd the sum data n (n-1)/2+0.5n of the priority numbers acquire weight data of each index;
the calculation formula for acquiring the weight data of each index is as follows:
optionally, the engineering data comprises energy consumption data and pollutant emission data of each stage in the whole construction process of the asphalt pavement.
Optionally, the process of obtaining the multi-level energy consumption index includes:
the calculation formula of the first-level index A for evaluating the energy consumption is as follows:
wherein A is an energy consumption evaluation index of the asphalt pavement; a is that j J=1, 2,3 respectively represent the energy consumption in the asphalt pavement mixing stage, the energy consumption in the transportation stage and the energy consumption in the paving and rolling stage; omega j J=1, 2,3 minutesRespectively representing the evaluation weights of the corresponding secondary indexes;
energy consumption index A in mixing stage 1 The calculation formula of (2) is as follows:
wherein A is 1 Representing the energy consumption of the asphalt pavement in the mixing stage; a is that 1n N=1, 2 represents the fuel consumption and the electric power consumption, respectively, of the mixing stage; omega 1n Respectively representing the corresponding three-level index evaluation weights;
energy consumption index A in transportation stage 2 And energy consumption index A in paving and rolling stage 3 The calculation formula of (2) is as follows:
A j ＝A j1
wherein A is j J=2, 3 respectively represent the energy consumption in the asphalt pavement transportation stage and the energy consumption in the paving and rolling stage; a is that j1 J=1, 2 represents the fuel consumption in the transport phase and in the spreading and rolling phase, respectively;
the calculation formula of the fuel consumption index of each stage is as follows:
wherein A is j1 J=1, 2,3 respectively represent the fuel consumption of the asphalt pavement mixing stage, the transportation stage and the paving and rolling stage; f (F) ji Indicating the consumption of the ith fuel in the j stage; z represents the number of kinds of consumed fuel; NCV (NCV) i Represents the average low heat generation amount of the i-th fuel;
the calculation formula of the power consumption index in the mixing stage is as follows:
A 12 ＝Qg3.6
wherein A is 12 Represents the power consumption (MJ) of the asphalt pavement mixing phase; q represents the power consumption (kw.h) of the mixing stage.
Optionally, the process of obtaining the multi-stage pollutant emission index comprises:
the calculation formula of the pollutant emission index B is as follows:
wherein B is an asphalt pavement pollutant emission evaluation index; b (B) j J=1, 2,3 denote asphalt pavement mixing stage discharge, transportation stage discharge, and paving rolling stage discharge, respectively; omega j J=1, 2,3 respectively represent the evaluation weights of the corresponding secondary indexes;
the calculation formula of the pollutant emission secondary index is as follows:
wherein B is j J=1, 2,3 represent pollutant emissions in the asphalt pavement mixing stage, the transportation stage and the paving and rolling stage, respectively; b (B) jn J=1, 2,3; n=1, 2,3,4 represent the greenhouse effect, ozone layer destruction, environmental acidification, human health damage in the mixing stage, the transport stage and the spreading and rolling stage, respectively; omega jn Respectively representing the corresponding three-level index evaluation weights;
the calculation formula of the pollutant emission three-level index is as follows:
wherein B is jn J=1, 2,3; n=1, 2,3,4 represent the greenhouse effect, ozone layer destruction, environmental acidification, human health damage in the mixing stage, the transport stage and the spreading and rolling stage, respectively; m is m ji Representing the emission amount of the ith pollutant in the j stage, including direct emission of the asphalt base material and indirect emission caused by energy consumption in each stage; z represents the number of kinds of contaminants; TF (TF) ni And when the n environmental impact index is calculated, the characterization factor corresponding to the ith pollutant is represented.
The application has the technical effects that:
according to the method for evaluating the ecological construction of the whole asphalt pavement construction process, provided by the application, a multistage comprehensive evaluation index system is constructed based on analysis results by carrying out stage analysis and consumption and emission analysis on the whole asphalt pavement construction process, weighting calculation is carried out on each stage of comprehensive evaluation decision indexes in the multistage comprehensive evaluation index system by a priority diagram method, weight data of each index in each stage of comprehensive evaluation decision indexes are obtained, engineering data of the whole asphalt pavement construction process is obtained, and the engineering data and the weight data are combined and calculated to obtain a comprehensive evaluation decision index reflecting the ecological benefit of the whole asphalt pavement construction process;
the application evaluates the whole process and the whole elements in the mixing stage, the transportation stage and the paving and rolling stage in the construction process of the asphalt pavement. The evaluation method establishes a multi-index comprehensive evaluation system (comprising 2 primary evaluation indexes, 6 secondary evaluation indexes and 16 tertiary evaluation indexes of energy consumption and pollutant emission) from two aspects of energy consumption and pollutant emission, and further calculates the evaluation indexes reflecting the ecological benefits of the whole asphalt pavement construction process.
The application evaluates the whole process and the whole elements in the mixing stage, the transportation stage and the paving and rolling stage in the construction process of the asphalt pavement, establishes a comprehensive evaluation index system for fusing the energy consumption and the environmental impact in the whole process of the construction process of the asphalt pavement, and provides support for ecological construction of the asphalt pavement in the future.
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.
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, in this embodiment, there is provided an ecological construction evaluation method for an entire process of asphalt pavement construction, including:
performing stage analysis and consumption emission analysis on the whole construction process of the asphalt pavement, constructing a multi-stage comprehensive evaluation index system based on analysis results, performing weighted calculation on all levels of comprehensive evaluation decision indexes in the multi-stage comprehensive evaluation index system through a priority diagram method to obtain weight data of all indexes in all levels of comprehensive evaluation decision indexes, obtaining engineering data of the whole construction process of the asphalt pavement, and performing combined calculation on the engineering data and the weight data to obtain the comprehensive evaluation decision indexes reflecting the ecological benefits of the whole construction process of the asphalt pavement.
(1) Building an ecological benefit comprehensive evaluation index system for the whole construction process of asphalt pavement
The evaluation index system comprises 2 primary indexes of energy consumption and pollutant emission, wherein 6 secondary indexes are arranged below the primary indexes, and 16 tertiary indexes are arranged below the secondary indexes. The comprehensive evaluation index system of the ecological benefits of the whole construction process of the asphalt pavement is shown in table 1;
TABLE 1
(2) Weight calculation and distribution are carried out on each level of evaluation indexes through a priority diagram method
And calculating weights of all levels of evaluation indexes in the comprehensive evaluation system by using an order diagram method. The method specifically comprises the following steps:
1) Drawing chessboard patterns, the fingers to be comparedThe marks are respectively placed in the first column and the first row of the chessboard diagram, and the expert compares the marks pairwise, if the mark X i Ratio X j Relatively more important, then X i Obtaining 1 score; if index X i And X j Of equal importance, then X i Obtaining 0.5 minute; if index X i Ratio X j Relatively unimportant, then X i Obtaining 0 score; score is marked as alpha ij 。
2) The scores of the indexes are transversely summed to obtain the total optimal number of each index as follows
3) And comprehensively calculating the total optimal number of all indexes to obtain the sum of the optimal numbers of n (n-1)/2+0.5n.
4) Dividing the total priority number of each index by the sum of the priority numbers to obtain the weight of the index, namely:
(3) Data required by evaluation are researched and collected, and evaluation indexes of each level are analyzed and calculated
(1) Energy consumption
The calculation formula of the first-level index A for energy consumption evaluation is expressed as follows:
wherein A is an energy consumption evaluation index of the asphalt pavement; a is that j J=1, 2,3 respectively represent the energy consumption in the asphalt pavement mixing stage, the energy consumption in the transportation stage and the energy consumption in the paving and rolling stage; omega j J=1, 2, and 3 represent the evaluation weights of the corresponding secondary indexes, respectively.
Energy consumption evaluation secondary index A 1 The calculation formula of (2) is expressed as:
wherein A is 1 Representing the energy consumption of the asphalt pavement in the mixing stage; a is that 1n N=1, 2 represents the fuel consumption and the electric power consumption, respectively, of the mixing stage; omega 1n Respectively representing the corresponding three-level index evaluation weights.
Energy consumption evaluation secondary index A 2 、A 3 The calculation formula of (2) is expressed as:
A j ＝A j1 (4)
wherein A is j J=2, 3 respectively represent the energy consumption in the asphalt pavement transportation stage and the energy consumption in the paving and rolling stage; a is that j1 J=1, 2 represents the fuel consumption in the transport phase and the spreading and rolling phase, respectively.
Three-level index A for energy consumption evaluation j1 The calculation formula of (2) is expressed as:
wherein A is j1 J=1, 2,3 respectively represent the fuel consumption of the asphalt pavement mixing stage, the transportation stage and the paving and rolling stage; f (F) ji Indicating the consumption of the ith fuel in the j stage; z represents the number of kinds of consumed fuel; NCV (NCV) i Represents the average low heat productivity (MJ/t or MJ/km) of the ith fuel 3 )。
Three-level index A for energy consumption evaluation 12 The calculation formula of (2) is expressed as:
A 12 ＝Qg3.6 (6)
wherein A is 12 Represents the power consumption (MJ) of the asphalt pavement mixing phase; q represents the power consumption (kw.h) of the mixing stage.
(2) Pollutant emissions
The calculation formula of the first-level index B for evaluating pollutant emission is expressed as follows:
wherein B is an asphalt pavement pollutant emission evaluation index; b (B) j J=1, 2,3 denote asphalt pavement mixing stage discharge, transportation stage discharge, and paving rolling stage discharge, respectively; omega j J=1, 2, and 3 represent the evaluation weights of the corresponding secondary indexes, respectively.
Pollutant emission evaluation second level index B j The calculation formula of (2) is expressed as:
wherein B is j J=1, 2,3 represent pollutant emissions in the asphalt pavement mixing stage, the transportation stage and the paving and rolling stage, respectively; b (B) jn J=1, 2,3; n=1, 2,3,4 represent the greenhouse effect, ozone layer destruction, environmental acidification, human health damage in the mixing stage, the transport stage and the spreading and rolling stage, respectively; omega jn Respectively representing the corresponding three-level index evaluation weights.
Three-level index B for evaluating pollutant emission jn The calculation formula of (2) is expressed as:
wherein B is jn J=1, 2,3; n=1, 2,3,4 represent the greenhouse effect, ozone layer destruction, environmental acidification, human health damage in the mixing stage, the transport stage and the spreading and rolling stage, respectively; m is m ji Representing the emission amount of the ith pollutant in the j stage (including direct emission of the asphalt base material and indirect emission caused by energy consumption in each stage); z represents the number of kinds of contaminants; TF (TF) ni When the n environmental impact index is calculated, the characterization factor (kg eq/kg) corresponding to the ith pollutant is determined by inquiring the ReCiPe environmental impact evaluation method.
The three-level index of pollutant emission evaluation and the corresponding main pollutants are shown in table 2:
TABLE 2
The specific implementation of the ecological construction evaluation index system proposed according to the embodiment is described as follows by combining the data investigation results of the actual engineering cases of A, B asphalt pavement:
(1) Basic data investigation required by whole construction process of asphalt pavement
In the case, the energy consumption evaluation is completed according to the actual investigation data and the net calorific value method, and the pollutant emission evaluation is completed according to the actual investigation data, the asphalt-based pollutant emission simulation test data and the ReCiPe environmental impact evaluation method. The energy consumption evaluation index and investigation data of the asphalt pavement are shown in table 3, and the pollutant emission evaluation index and investigation data of the asphalt pavement are shown in table 4;
TABLE 3 Table 3
TABLE 4 Table 4
(2) Weight calculation and distribution are carried out on each level of evaluation indexes through a priority diagram method
According to the expert scoring method, calculating the weight of the evaluation index system in the whole construction process of the asphalt pavement by adopting the order diagram method, and obtaining the weight value of each level of evaluation index.
The first-level indexes are only two, and can be combined with expert scores, and the energy consumption is calculated according to the importance ratio: environmental emission=2:3, i.e. the first level index weights are 0.4 (energy consumption) and 0.6 (environmental emission), respectively.
The energy consumption secondary index is combined with expert scoring, and the obtained chessboard is shown in table 5:
TABLE 5
| A 1 | A 2 | A 3 | |
| A 1 | 0.5 | 1 | 1 |
| A 2 | 0 | 0.5 | 0 |
| A 3 | 0 | 1 | 0.5 |
And (3) calculating to obtain:
similarly, the pollutant emission secondary index is calculated to obtain the weight as follows: omega B1 ＝0.56；ω B2 ＝0.11；ω B3 ＝0.33。
In the mixing stage of the three-level indexes of energy consumption, only two indexes of power consumption and fuel consumption are adopted, and the power consumption is calculated according to the importance proportion by combining expert scores: fuel consumption=1:3, i.e. the three-level index weights are 0.25 (power consumption) and 0.75 (fuel consumption), respectively.
The three levels of pollutant emissions index combined with expert scores gave a checkerboard pattern as shown in table 6:
TABLE 6
| B j1 | B j2 | B j3 | B j4 | |
| B j1 | 0.5 | 1 | 1 | 1 |
| B j2 | 0 | 0.5 | 0 | 1 |
| B j3 | 0 | 1 | 0.5 | 1 |
| B j4 | 0 | 0 | 0 | 0.5 |
And (3) calculating to obtain:
the weight result of the comprehensive evaluation index system based on the priority diagram method is shown in table 7;
TABLE 7
Table 7 shows the weight results of the evaluation indexes of each stage, and the weight results were analyzed to determine: the influence effect of pollutant emission in the comprehensive evaluation of the ecological benefit of the whole construction process of the asphalt pavement is slightly higher than that of energy consumption.
(3) Calculating first-level evaluation indexes of the asphalt pavement A and the asphalt pavement B
Calculating an energy consumption evaluation index:
calculating pollutant emission evaluation indexes:
the calculation result of the first-level index can be known: the energy consumption of the road surface A is lower than that of the road surface B, and 86.93% of the road surface B is obtained; the pollutant discharge of the road surface A is lower than that of the road surface B, and is 73.06 percent of that of the road surface B.
The whole process and the whole element are evaluated in the mixing stage, the transportation stage and the paving and rolling stage in the asphalt pavement construction process. The evaluation method establishes a multi-index comprehensive evaluation system (comprising 2 primary evaluation indexes, 6 secondary evaluation indexes and 16 tertiary evaluation indexes of energy consumption and pollutant emission) from two aspects of energy consumption and pollutant emission, and further calculates the evaluation indexes reflecting the ecological benefits of the whole asphalt pavement construction process.
The embodiment carries out the evaluation of the whole process and the whole elements aiming at the mixing stage, the transportation stage and the paving and rolling stage in the construction process of the asphalt pavement, establishes a comprehensive evaluation index system for fusing the energy consumption and the environmental impact in the whole process of the construction process of the asphalt pavement, and provides support for the ecological construction of the asphalt pavement in the future.
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 (8)
1. The ecological construction evaluation method for the whole asphalt pavement construction process is characterized by comprising the following steps of:
performing stage analysis and consumption emission analysis on the whole construction process of the asphalt pavement, constructing a multi-stage comprehensive evaluation index system based on analysis results, and performing weighted calculation on all levels of comprehensive evaluation decision indexes in the multi-stage comprehensive evaluation index system by using a priority diagram method to obtain weight data of all indexes in all levels of comprehensive evaluation decision indexes;
and acquiring engineering data of the whole construction process of the asphalt pavement, and carrying out combined calculation on the engineering data and the weight data to obtain a comprehensive evaluation decision index reflecting the ecological benefit of the whole construction process of the asphalt pavement.
2. The method for evaluating the ecological construction of the whole asphalt pavement construction process according to claim 1, wherein,
the multi-stage comprehensive evaluation index system comprises a multi-stage energy consumption index and a multi-stage pollutant emission index.
3. The method for evaluating the ecological construction of the whole asphalt pavement construction process according to claim 2, wherein,
the multi-level energy consumption index comprises a primary energy consumption index, a secondary energy consumption index and a tertiary energy consumption index;
the multi-stage pollutant discharge index comprises a pollutant discharge primary index, a pollutant discharge secondary index and a pollutant discharge tertiary index.
4. The method for evaluating the ecological construction of the whole asphalt pavement construction process according to claim 3, wherein,
the primary energy consumption index comprises an energy consumption index A, and the secondary energy consumption index is the energy consumption index of different stages of the primary energy consumption index, including an energy consumption index A of a mixing stage 1 Energy consumption index A in transportation stage 2 And energy consumption index A in paving and rolling stage 3 The energy consumption three-level index is an energy consumption type index of each energy consumption two-level index, and comprises a mixing stage fuel consumption index A 11 Electric power consumption index A in mixing stage 12 Fuel consumption index A in transportation stage 21 And fuel consumption index A in spreading and rolling stage 31 ；
The first pollutant discharge index comprises a pollutant discharge index B, and the second pollutant discharge index is a pollutant discharge index of different stages of the first pollutant discharge index and comprises a pollutant discharge index B of a mixing stage 1 Pollutant emission index B in transportation stage 2 And pollutant discharge index B in paving and rolling stage 3 The pollutant emission three-level index is a pollutant emission type index of each pollutant emission two-level index and comprises a greenhouse effect index B in a mixing stage 11 Ozone layer destruction index B in mixing stage 12 Environmental acidification index B in mixing stage 13 Human health damage index B in mixing stage 14 Greenhouse effect index B in transportation stage 21 Ozone layer destruction index B in transportation stage 22 Environmental acidification index B in transportation stage 23 Index B of human health damage during transportation 24 Greenhouse effect index B in paving and rolling stage 31 Ozone layer damage index B in paving and rolling stage 32 Environmental acidification index B in paving and rolling stage 33 And human health damage index B in the paving and rolling stage 34 。
5. The method for evaluating the ecological construction of the whole asphalt pavement construction process according to claim 1, wherein,
the process of obtaining the weight data of each index comprises the following steps:
constructing a chessboard diagram for each levelPerforming pairwise comparison on each index in the comprehensive evaluation decision indexes to obtain score data of each index, and performing transverse summation on the score data of each index to obtain total optimal number data of each indexSumming the total priority numbers of the indexes to obtain priority number sum data n (n-1)/2+0.5n, and based on the total priority number dataAnd the sum data n (n-1)/2+0.5n of the priority numbers acquire weight data of each index;
the calculation formula for acquiring the weight data of each index is as follows:
6. the method for evaluating the ecological construction of the whole asphalt pavement construction process according to claim 1, wherein,
the engineering data comprise energy consumption data and pollutant emission data of each stage in the whole construction process of the asphalt pavement.
7. The method for evaluating the ecological construction of the whole asphalt pavement construction process according to claim 3, wherein,
the process of obtaining the multi-stage energy consumption index comprises the following steps:
the calculation formula of the first-level index A for evaluating the energy consumption is as follows:
wherein A is an energy consumption evaluation index of the asphalt pavement; a is that j J=1, 2,3 respectively represent the energy of the asphalt pavement mixing stageSource consumption, energy consumption in the transportation stage and energy consumption in the paving and rolling stage; omega j J=1, 2,3 respectively represent the evaluation weights of the corresponding secondary indexes;
energy consumption index A in mixing stage 1 The calculation formula of (2) is as follows:
wherein A is 1 Representing the energy consumption of the asphalt pavement in the mixing stage; a is that 1n N=1, 2 represents the fuel consumption and the electric power consumption, respectively, of the mixing stage; omega 1n Respectively representing the corresponding three-level index evaluation weights;
energy consumption index A in transportation stage 2 And energy consumption index A in paving and rolling stage 3 The calculation formula of (2) is as follows:
A j ＝A j1
wherein A is j J=2, 3 respectively represent the energy consumption in the asphalt pavement transportation stage and the energy consumption in the paving and rolling stage; a is that j1 J=1, 2 represents the fuel consumption in the transport phase and in the spreading and rolling phase, respectively;
the calculation formula of the fuel consumption index of each stage is as follows:
wherein A is j1 J=1, 2,3 respectively represent the fuel consumption of the asphalt pavement mixing stage, the transportation stage and the paving and rolling stage; f (F) ji Indicating the consumption of the ith fuel in the j stage; z represents the number of kinds of consumed fuel; NCV (NCV) i Represents the average low heat generation amount of the i-th fuel;
the calculation formula of the power consumption index in the mixing stage is as follows:
A 12 ＝Qg3.6
wherein A is 12 Representing the power consumption of the asphalt pavement mixing stage; q represents the power cancellation of the blending stageConsumption amount.
8. The method for evaluating the ecological construction of the whole asphalt pavement construction process according to claim 3, wherein,
the process of obtaining the multi-stage pollutant emission index comprises the following steps:
the calculation formula of the pollutant emission index B is as follows:
wherein B is an asphalt pavement pollutant emission evaluation index; b (B) j J=1, 2,3 denote asphalt pavement mixing stage discharge, transportation stage discharge, and paving rolling stage discharge, respectively; omega j J=1, 2,3 respectively represent the evaluation weights of the corresponding secondary indexes;
the calculation formula of the pollutant emission secondary index is as follows:
wherein B is j J=1, 2,3 represent pollutant emissions in the asphalt pavement mixing stage, the transportation stage and the paving and rolling stage, respectively; b (B) jn J=1, 2,3; n=1, 2,3,4 represent the greenhouse effect, ozone layer destruction, environmental acidification, human health damage in the mixing stage, the transport stage and the spreading and rolling stage, respectively; omega jn Respectively representing the corresponding three-level index evaluation weights;
the calculation formula of the pollutant emission three-level index is as follows:
wherein B is jn J=1, 2,3; n=1, 2,3,4 respectively represent the mixing stage greenhouse effect, ozone layer destruction in the transportation stage and the paving and rolling stage,Environmental acidification, human health damage; m is m ji Representing the emission amount of the ith pollutant in the j stage, including direct emission of the asphalt base material and indirect emission caused by energy consumption in each stage; z represents the number of kinds of contaminants; TF (TF) ni And when the n environmental impact index is calculated, the characterization factor corresponding to the ith pollutant is represented.
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