CN114970102B - Evaluation method for full-chain ecological design, construction and operation and maintenance of asphalt pavement - Google Patents
Evaluation method for full-chain ecological design, construction and operation and maintenance of asphalt pavement Download PDFInfo
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Abstract
The invention relates to the technical field of evaluation of green sustainable products of infrastructure, in particular to an evaluation method for full-chain ecological design, construction and operation and maintenance of an asphalt pavement. The specific technical scheme is as follows: an evaluation method for full-chain ecological design, construction and operation and maintenance of an asphalt pavement is characterized by establishing an comprehensive evaluation index system for the ecological endurance benefit of the asphalt pavement, researching and collecting engineering data required by evaluation, analyzing and calculating each evaluation index, performing weight calculation and distribution on each evaluation index by adopting an analytic hierarchy process, and further calculating a comprehensive evaluation decision index reflecting the ecological endurance benefit of the life cycle of the asphalt pavement. The invention establishes a three-in-one comprehensive evaluation index system and an evaluation method which integrate the economic cost, the technical performance and the environmental influence of the asphalt pavement, provides a comprehensive evaluation decision index of the ecological durability benefit of the asphalt pavement, and provides technical support for realizing ecological durability design and service of the asphalt pavement engineering in future.
Description
Technical Field
The invention relates to the technical field of evaluation of green sustainable products of infrastructure, in particular to an evaluation method for full-chain ecological design, construction and operation and maintenance of an asphalt pavement.
Background
With the rapid development of science and technology, environmental problems are increasingly prominent and people are also gradually aware of the degree of harm of environmental pollution to human health and even social development. In recent years, with the gradual improvement of the environment protection consciousness of society and enterprises, the ecological design concept of products is gradually happy, and the innovation development and the application of various energy-saving and environment-friendly facilities and technologies make great progress in various industries. The development and establishment of green and sustainable environment-friendly products and related design theories and methods to reduce the negative impact of the products on the environment in the whole life cycle have become the targets generally pursued and developed in the industrial manufacturing field of China. In the design and evaluation process of the product, on the basis of meeting the design requirement and standard of the green product, the comprehensive consideration of economic cost and product use performance is considered, and the essential condition for achieving real sustainable development is also achieved.
At present, the total mileage of roads in China is the first in the world, and as a preferred asphalt pavement construction industry for paving high-grade roads and urban roads, on the premise of pursuing and meeting technical and economic benefits in the past, how to further consider the environmental influence of asphalt pavements is of great importance for the sustainable development of future asphalt pavement technologies. In recent years, green evaluation research around asphalt pavement construction is increasing, but a set of scientific and comprehensive evaluation method and evaluation index system are not established and formed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an evaluation method for the ecological design, construction and operation and maintenance of an asphalt pavement full chain, which is used for carrying out the ecological endurance evaluation of the whole process, the whole elements and the multiple dimensions aiming at the construction, the operation and maintenance management and the final treatment life cycle of the full chain of the asphalt pavement engineering, establishing a three-in-one comprehensive evaluation index system and an evaluation method which are integrated with the economic cost, the technical performance and the environmental impact of the asphalt pavement, providing an ecological endurance benefit comprehensive evaluation decision index of the asphalt pavement and providing technical support for realizing the ecological endurance design and the service of the asphalt pavement engineering in the future.
In order to realize the purpose, the invention is realized by the following technical scheme:
the invention discloses an evaluation method for full-chain ecological design, construction and operation and maintenance of an asphalt pavement, which comprises the steps of establishing an comprehensive evaluation index system for ecological endurance benefit of the asphalt pavement, researching and collecting engineering data required by evaluation, analyzing and calculating each evaluation index, performing weight calculation and distribution on each evaluation index by adopting an analytic hierarchy process, and further calculating a comprehensive evaluation decision index for reflecting the ecological endurance benefit of the life cycle of the asphalt pavement.
Preferably, the comprehensive evaluation index system for the ecological endurance benefits of the asphalt pavement comprises economic evaluation, technical performance evaluation and environmental impact evaluation, wherein the economic evaluation comprises second-level index construction period cost, operation and maintenance period cost and final period cost, the technical performance evaluation comprises second-level index construction period performance simulation evaluation, operation and maintenance period performance detection evaluation and final period performance residual value evaluation, and the environmental impact evaluation comprises second-level index construction period environmental impact, operation and maintenance period environmental impact and final period environmental impact.
Preferably, the construction period cost comprises three-level index material transportation and processing cost, building installation engineering cost and other engineering construction cost; the operation and maintenance period cost comprises three-level index daily maintenance cost and special maintenance cost, and the final end-stage cost comprises three-level index abandonment disposal cost and renewable utilization cost.
Preferably, the simulation evaluation of the performance in the construction period comprises three-level indexes of high-temperature permanent deformation, fatigue cracking and low-temperature cracking, the detection evaluation of the performance in the operation and maintenance period comprises three-level indexes of a pavement damage index, a running quality index, a rutting depth index, an anti-skid performance index and a pavement structural strength index, and the evaluation of the performance residual value in the final stage comprises three-level indexes of an asphalt performance residual value and a material collection performance residual value; the construction period environmental influence, the operation and maintenance period environmental influence and the final period environmental influence comprise three-level index greenhouse effect, ozone layer destruction, environmental acidification, photochemical smog, non-renewable resource exhaustion and human health damage.
Preferably, the calculation formula of the economic evaluation C is as follows:
in the formula, C m M =1,2,3 respectively represents the construction period cost, the operation and maintenance period cost and the final period cost of the asphalt pavement; omega m M =1,2,3 respectively represent evaluation weights of the corresponding secondary indexes;
the construction period cost C 1 The calculation formula of (2) is as follows:
C 1 ＝C 11 +C 12 +C 13 (2)
in the formula, C 11 Material transportation and processing costs; c 12 Installation engineering costs for the building; c 13 Other costs for engineering construction;
the operation and maintenance period cost C 2 The calculation formula of (2) is as follows:
C 2 ＝C 21 +C 22 (3)
in the formula, C 21 Cost for routine maintenance; c 22 Special maintenance cost;
the end stage cost C 3 The calculation formula of (2) is as follows:
C 3 ＝C 31 +C 32 (4)
in the formula, C 31 Cost for disposal; c 32 Is a renewable utilization cost.
Preferably, the calculation formula of the technical performance evaluation P is as follows:
in the formula, P m M =1,2,3 respectively represents a performance simulation evaluation result of the asphalt pavement in the construction period, a performance detection evaluation result of the operation and maintenance period and a performance residual value evaluation result of the final period; omega m M =1,2,3 respectively represent evaluation weights of the corresponding secondary indexes;
the construction period performance simulation evaluation P 1 The calculation formula of (2) is as follows:
in the formula, P 1n N =1,2,3 represents high-temperature permanent deformation, fatigue cracking, and low in the asphalt pavement, respectivelySimulation evaluation results of the temperature cracking performance; omega 1n N =1,2,3 respectively represent evaluation weights of the corresponding three-level indexes;
the performance detection and evaluation P of the operation and maintenance period 2 The calculation formula of (2) is as follows:
in the formula, P 2n N =1,2,3,4 respectively represents an asphalt pavement breakage index, a running quality index, a rut depth index, and an anti-skid performance index; omega 2n N =1,2,3,4 respectively represent evaluation weights of the corresponding three-level indexes;
evaluation of residual Performance at end stage P 3 The calculation formula of (2) is as follows:
in the formula, P 3n N =1,2 respectively representing the asphalt performance residual value and the aggregate performance residual value; omega 3n N =1,2 respectively indicate evaluation weights of the corresponding three-level indexes.
Preferably, the three-level index P for simulation evaluation of performance in construction period 1n The calculation formula of (2) is as follows:
in the formula, T n Representing a three-level index evaluation value corresponding to the simulation evaluation of the asphalt pavement construction period performance of the test group; t is a unit of n ' expressing a three-level index evaluation value corresponding to the performance simulation evaluation of the asphalt pavement in the construction period of the reference control group;
the three-level index P for evaluating the performance residual value at the final stage 3n The calculation formula of (2) is as follows:
in the formula, M n Representing a three-level index evaluation value corresponding to the final performance residual value evaluation of the test group; m n ' indicates a three-level index evaluation value corresponding to the final performance residual value evaluation of the reference control group.
Preferably, the calculation formula of the environmental impact evaluation E is:
in the formula, E m M =1,2,3 respectively represents the construction period environmental influence, the operation and maintenance period environmental influence and the final period environmental influence of the asphalt pavement; omega m M =1,2,3 respectively represent evaluation weights of the corresponding secondary indexes;
secondary index E of the environmental impact evaluation 1 、E 2 、E 3 The calculation formula of (2) is as follows:
in the formula, E j J =1,2,3 respectively represent the environmental impact of the asphalt pavement in three stages of construction period, operation and maintenance period and final period; k =1,2,3,4,5,6 respectively representing greenhouse effect, ozone layer depletion, environmental acidification, photochemical smog, exhaustion of non-renewable resources, human health damage; m is ji Indicating the discharge amount of the i pollutant in the j stage; z represents the number of species of contaminant; TF ki And (3) representing a characterization factor (kg eq/kg) corresponding to the i-th pollutant when calculating the k environment influence index.
Preferably, the step of performing weight calculation and distribution on each evaluation index by the analytic hierarchy process is as follows:
1) Establishing a hierarchical structure model;
2) Carrying out comparison and scoring according to the 1-9 scale of an analytic hierarchy process to construct a pair comparison matrix;
3) Calculating a weight vector and carrying out consistency check;
the method comprises the following specific steps: calculating the product M of each row of the judgment matrix i ：
In the formula, n represents the number of columns of the matrix;
calculating M i The root of the b th order:
will vector
Normalized to W = | W 1 W 2 ... W n | T ；
The eigenvector is W = | W 1 W 2 ... W n | T ；
Computing the maximum feature root λ max ；
In the formula, AW i Represents the ith element in the AW vector;
according to the maximum characteristic root, calculating a consistency index CI;
in the formula, h is the number of paired comparison factors;
where CR is the consistency ratio, RI can be determined by a random consistency table query.
Preferably, the calculation formula of the comprehensive evaluation decision index Q of the ecological durability benefit is as follows:
Q＝ω C ·Q C +ω P ·Q P +ω E ·Q E (13)
in the formula, omega C Evaluating the weight for the economy; omega P Evaluating the weight for the technical performance; omega E Evaluating the weight for the environmental impact; q C Normalizing the value for economic evaluation; q P Normalizing the value for technical performance evaluation; q E The normalized values were evaluated for environmental impact.
The invention has the following beneficial effects:
1. the invention carries out multi-dimensional ecological durability evaluation around the whole chain life cycle of asphalt pavement engineering construction, operation and maintenance management and final treatment based on the relevant technical rules/standards/specifications in the field of the current highway engineering, the general rules of green product evaluation and the like. The evaluation method considers three aspects of economic cost, technical performance and environmental influence to construct an ecological endurance evaluation criterion of the green sustainable asphalt pavement, establishes a multi-index comprehensive evaluation system (comprising 3 first-level evaluation indexes, 9 second-level evaluation indexes and 23 third-level evaluation indexes of economic performance, technical performance and environmental influence), determines weight distribution of all levels of the multi-level index system by adopting an analytic hierarchy process, and further calculates a comprehensive evaluation decision index reflecting the life cycle ecological endurance benefit of the asphalt pavement.
2. The evaluation method provided by the invention has the advantages of wide application range, strong operability and good practical application potential, provides technical support for realizing ecological durable high-value service of the whole life cycle of the asphalt pavement, and has important significance for the construction of future green low-carbon traffic infrastructures.
Drawings
FIG. 1 is a flow chart of the ecological durability evaluation system of the present invention;
FIG. 2 is an index system for comprehensive evaluation of ecological durability benefits of asphalt pavement.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless otherwise indicated, the technical means used in the examples are conventional means well known to those skilled in the art.
The invention discloses an evaluation method for full-chain ecological design, construction and operation and maintenance of an asphalt pavement, which comprises the steps of establishing an index system for comprehensive evaluation of ecological endurance benefit of the asphalt pavement, researching and collecting engineering data required by evaluation, analyzing and calculating each evaluation index, performing weight calculation and distribution on each evaluation index by adopting an analytic hierarchy process, and further calculating a comprehensive evaluation decision index for reflecting the ecological endurance benefit of the life cycle of the asphalt pavement.
The ecological durability evaluation method provided by the invention specifically comprises the following steps:
(1) Establishing an index system for comprehensive evaluation of ecological durability benefits of asphalt pavement
The comprehensive evaluation index system for the ecological durability benefits of the asphalt pavement comprises three primary indexes of economic evaluation, technical performance evaluation and environmental impact evaluation, wherein 9 secondary indexes are arranged under the primary indexes, and 23 tertiary indexes are arranged under the secondary indexes. In particular, as shown in table 1 below.
TABLE 1 comprehensive evaluation index system for asphalt pavement
(2) Investigating and collecting engineering data required for evaluation, and analyzing and calculating each evaluation index
(1) Evaluation of economic efficiency
The calculation formula of the economic evaluation C is as follows:
in the formula, C is an economic evaluation index (1/ten thousand yuan) of the asphalt pavement; c m M =1,2,3 respectively represents the construction period cost (ten thousand yuan), the operation and maintenance period cost (ten thousand yuan) and the final period cost (ten thousand yuan) of the asphalt pavement; omega m And m =1,2,3 respectively represent evaluation weights of the corresponding secondary indexes.
Construction period cost C 1 The calculation formula of (2) is as follows:
C 1 ＝C 11 +C 12 +C 13 (2)
in the formula, C 11 The cost (ten thousand yuan) for transporting and processing various materials in the road surface construction is reduced; c 12 The method is characterized by comprising the following steps of (1) providing mechanical use and installation cost and various labor costs (ten thousand yuan) in all procedures in the road construction process; c 13 The engineering cost is other engineering cost (ten thousand yuan) such as test cost, enterprise cost and management cost involved in engineering.
Cost of operation and maintenance period C 2 The calculation formula of (2) is as follows:
C 2 ＝C 21 +C 22 (3)
in the formula, C 21 The total cost (ten thousand yuan) of routine maintenance (inspection tour and maintenance) in the service period of the pavement is obtained; c 22 The total cost (ten thousand yuan) of special maintenance engineering (medium maintenance, major maintenance or reconstruction engineering) in the service period of the pavement is obtained.
Final end cost C 3 The calculation formula of (c) is:
C 3 ＝C 31 +C 32 (4)
in the formula, C 31 The cost (ten thousand yuan) of the waste disposal of the non-renewable part at the end of the service period of the pavement; c 32 Is the utilization cost (ten thousand yuan) of the renewable part.
(2) Evaluation of technical Properties
The calculation formula of the technical performance evaluation P is as follows:
in the formula, P is an evaluation index of technical performance of the asphalt pavement; p m M =1,2,3 respectively represents the performance simulation evaluation result of the asphalt pavement in the construction period, the performance detection evaluation result of the operation and maintenance period and the performance residual value evaluation result of the final period; omega m M =1,2,3 respectively represent evaluation weights of the corresponding secondary indices.
Construction period performance simulation evaluation P 1 The calculation formula of (2) is as follows:
in the formula, P 1n N =1,2,3 respectively represent the simulation evaluation results of the high-temperature permanent deformation, fatigue cracking and low-temperature cracking performances of the asphalt pavement; omega 1n N =1,2,3 respectively represent evaluation weights of the corresponding three-level indexes.
Operation and maintenance period performance detection and evaluation P 2 The calculation formula of (2) is as follows:
in the formula, P 2n N =1,2,3,4 respectively represents an asphalt pavement breakage index, a running quality index, a rutting depth index, and an anti-skid performance index, and is evaluated according to the current road technical condition evaluation standard (JTG 5210-2018); omega 2n N =1,2,3,4 represents the evaluation weight of the corresponding three-level index, respectively.
Evaluation of residual Final Performance P 3 The calculation formula of (2) is as follows:
in the formula, P 3n N =1,2 represents the residual asphalt performance value and the residual aggregate performance value respectively; omega 3n N =1,2 represents the evaluation weight of the corresponding three-level index.
Three-level index P for technical performance evaluation 1n The calculation formula of (2) is as follows:
in the formula, T n Representing the three-level index evaluation value corresponding to the asphalt pavement of the test group; t is a unit of n ' represents a three-level index evaluation value corresponding to the asphalt pavement of the reference control group; (when the smaller the evaluation index result is, the better the performance is, T n And T n ' taking the reciprocal of each for P 1n Index calculation).
Three-level index P for technical performance evaluation 3n The calculation formula of (2) is as follows:
in the formula, M n Representing a three-level index evaluation value corresponding to the regenerated material of the test group; m n ' represents a three-level index evaluation value corresponding to the reference control group recycled material; (when the smaller the evaluation index result is, the better the performance is, M n And M n ' taking the reciprocal of each for P 3n Index calculation).
(3) Evaluation of environmental impact
The calculation formula of the environmental impact evaluation E is:
in the formula, E is an evaluation index of the environmental impact of the asphalt pavement; e m M =1,2,3 respectively represents the construction period environmental influence, the operation and maintenance period environmental influence and the final period environmental influence of the asphalt pavement; omega m M =1,2,3 respectively represent evaluation weights of the corresponding secondary indices.
Secondary index E for environmental impact evaluation 1 、E 2 、E 3 The calculation formula of (2) is as follows:
in the formula, E j J =1,2,3 respectively represents the environmental influence of the asphalt pavement in the construction period, the operation and maintenance period and the final period; k =1,2,3,4,5,6 respectively representing greenhouse effect, ozone layer depletion, environmental acidification, photochemical smog, exhaustion of non-renewable resources, human health damage; m is ji Represents the discharge amount of the i-th pollutant in the j stage; z represents the number of types of contaminants; TF ki When k environment influence indexes are calculated, the characterization factors (kg eq/kg) corresponding to the ith pollutants are determined by query of a ReciPe environment influence evaluation method.
The three-level index of environmental impact evaluation and its corresponding major pollutants are shown in table 2.
Table 2 evaluation of environmental impact three-level index and main pollutants
| Three-level index for environmental impact evaluation | Major pollutants |
| Greenhouse effect | CO 2 Equal greenhouse gas |
| Ozone layer depletion | Volatile Organic Compounds (VOCs), nitrogen Oxides (NO) X ) |
| Acidification of the Environment | NO X ，NH 3 ，SO 2 |
| Photochemical smog | Ethylene, non-methane hydrocarbon |
| Exhaustion of non-renewable resources | Crude oil, raw coal, natural gas |
| Damage to human health | Particulate Matter (PM), VOCs |
(3) Calculating and distributing weight of each level of evaluation index by using analytic hierarchy process
The method comprises the following specific steps:
1) Establishing a hierarchical structure model;
2) Carrying out comparison and scoring according to the 1-9 scale of an analytic hierarchy process to construct a pair comparison matrix; the chromatographic analysis scale method is shown in the following table 3.
TABLE 3 hierarchical analysis Scale method
| Dimension a ij | Means of |
| 1 | X i And X j The same ratio of influence of |
| 3 | X i And X j Is slightly stronger than |
| 5 | X i Ratio X j Has strong influence on |
| 7 | X i And X j Is obviously strong |
| 9 | X i And X j Is absolutely strong |
| 2,4,6,8 | X i And X j Between the above two |
| 1/2，…，1/9 | X i And X j Has a ratio of ij Reciprocal number of |
3) Calculating a weight vector and carrying out consistency check;
the method comprises the following specific steps: calculating the product M of each row of the judgment matrix i ：
In the formula, n represents the number of columns of the matrix;
calculating M i The root of the b th order:
will vector
Normalized to W = | W 1 W 2 ... W n | T ；
The eigenvector is W = | W 1 W 2 ... W n | T ；
Computing the maximum feature root λ max ；
In the formula, AW i Represents the ith element in the AW vector;
calculating a consistency index CI according to the maximum characteristic root;
in the formula, h is the number of paired comparison factors;
where CR is the consistency ratio, RI can be determined by a random consistency table query.
(4) Calculating ecological endurance benefit comprehensive evaluation decision index
Based on the evaluation results of the economic property, the technical performance and the environmental influence of the asphalt pavement, a matrix is established for fuzzification processing, and the performance matrixes in the three evaluation directions are weighted and summed in the same dimension.
The calculation formula of the comprehensive evaluation decision index Q of the ecological durability benefit is as follows:
Q＝ω C ·Q C +ω P ·Q P +ω E ·Q E (13)
in the formula, ω C Evaluating the first-level index weight for economy; omega P Evaluating the first-level index weight for the technical performance; omega E Evaluating a primary index weight for environmental impact; q C The first-level index normalization value is evaluated for economy; q P Evaluating a first-level index normalization value for technical performance; q E And evaluating a first-level index normalization value for environmental influence.
The invention is further illustrated below with reference to specific examples.
The concrete embodiment of the ecological durability evaluation method provided by the invention is described as follows by combining the data research result of the actual engineering case of a bidirectional 4-lane asphalt pavement:
(1) Basic data investigation of comprehensive evaluation index system for ecological durability benefits of asphalt pavement
This example illustrates the feasibility of the technique of the invention for an asphalt pavement using two different materials, A and B. Wherein, the economic evaluation is finished according to the road engineering budget quota (JTG/T3832-2018) and engineering related documents; the related method for evaluating the technical performance is completed by referring to related documents such as road engineering asphalt and asphalt mixture test procedures (JTG E20-2011), road technical condition assessment standards (JTG 5210-2018), road asphalt pavement regeneration technical specifications (JTG/T5521-2019) and the like; the environmental impact evaluation is completed according to the research data and the ReCiPe environmental impact evaluation method, and the specific results are shown in tables 4-6 below.
TABLE 4 evaluation index and investigation data of asphalt pavement economy
TABLE 5 asphalt pavement technical performance evaluation index and investigation data
TABLE 6 evaluation index and investigation data of asphalt pavement environmental impact
(2) Calculating and distributing weight of each level of evaluation index by using analytic hierarchy process
And calculating the weight of the asphalt pavement index system by adopting an analytic hierarchy process according to an expert scoring method to obtain evaluation index values of all levels. The technical performance evaluation weight assignment of the asphalt pavement in the operation and maintenance period refers to the related index weight in the road technical condition evaluation Standard (JTG 5210-2018).
1) Establishing a hierarchical structure model;
2) Constructing a pair comparison matrix;
3) And calculating a weight vector and checking consistency.
W＝[0.271 0.196 0.533]，λ max =3.003, cr =0.0003 < 0.1, by one-time test;
W 1 ＝[0.634 0.174 0.192]，λ max =3.0092, cr =0.0088 < 0.1, by single-use test;
W 2 ＝[0.216 0.603 0.181]，λ max =3.0324, cr =0.0308 < 0.1, by one-time test;
W 3 ＝[0.330 0.278 0.392]，λ max =3.0268, cr =0.0255 < 0.1, by one-time test;
W 11 ＝[0.3750.3125 0.3125]，λ max =3,cr =0.0 < 0.1, by one-time test;
W 12 ＝[0.364 0.636]，λ max =2,cr =0.0 < 0.1, passing one-time test;
W 13 ＝[0.364 0.636]，λ max =2,cr =0.0 < 0.1, by one-time test;
W 21 ＝[0.375 0.3125 0.3125]，λ max =3, cr =0.0 < 0.1, by one-time test;
W 21 ＝[0.455 0.545]，λ max =2,cr =0.0 < 0.1, passing one-time test.
The comprehensive evaluation index system weight result of the ecological endurance benefit of the asphalt pavement based on the analytic hierarchy process is shown in the following table 7.
TABLE 7 comprehensive evaluation index system weight result of asphalt pavement ecological durability benefit based on analytic hierarchy process
Through the analysis of the weight result, the following results are obtained: the index with the largest influence on the comprehensive evaluation of the ecological durability benefits of the asphalt pavement is environmental influence evaluation (the weight result is 0.533), the influence effects of economic evaluation and technical performance evaluation are not greatly different, and the weight of the economic evaluation is slightly higher than that of the technical performance evaluation.
(3) Calculating the first-grade evaluation indexes of the A and B asphalt pavements
An economic evaluation index is calculated by formula (1):
calculating a technical performance evaluation index by formula (5):
the environmental impact evaluation index is calculated by formula (11):
the calculation result of the primary index shows that: the economy of the pavement A is slightly worse than that of the pavement B, and is 88.86 percent of that of the pavement B; the technical performance of the pavement A is slightly inferior to that of the pavement B, and is 91.69 percent of that of the pavement B; the environmental impact of the pavement A is far higher than that of the pavement B, and is 294.2 percent of that of the pavement B.
(4) Comprehensive decision evaluation index for calculating ecological endurance benefit of asphalt pavement
Based on evaluation results of the economic property, the technical performance and the environmental influence of the asphalt pavement, a matrix is established for fuzzification treatment, so that the performance matrixes in three evaluation directions are weighted and summed in the same dimension. According to the calculated economic matrix = (a road surface, B road surface) = (0.471, 0.529), technical performance matrix = (a road surface, B road surface) = (0.478, 0.522), environmental impact matrix = (a road surface, B road surface) = (0.746, 0.254).
Calculating an ecological durability benefit comprehensive evaluation decision index (Q) of the asphalt pavement by using a formula (13):
Q A ＝ω C ·Q C +ω P ·Q P +ω E ·Q E
＝0.271×0.471+0.196×0.478+0.533×0.746＝0.6189
Q B ＝ω C ·Q C +ω P ·Q P +ω E ·Q E
＝0.271×0.529+0.196×0.522+0.533×0.254＝0.3811
the ecological durability benefit comprehensive evaluation decision index of the pavement A is improved by 62.4% compared with that of the pavement B through calculation.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (6)
1. An evaluation method for the ecological design, construction and operation and maintenance of an asphalt pavement full chain is characterized by comprising the following steps: establishing an asphalt pavement ecological endurance benefit comprehensive evaluation index system, investigating and collecting engineering data required by evaluation, analyzing and calculating each evaluation index, performing weight calculation and distribution on each evaluation index by adopting an analytic hierarchy process, and further calculating a comprehensive evaluation decision index reflecting the asphalt pavement life cycle ecological endurance benefit;
the comprehensive evaluation index system for the ecological durable benefits of the asphalt pavement comprises economic evaluation, technical performance evaluation and environmental impact evaluation, wherein the economic evaluation comprises secondary index construction period cost, operation and maintenance period cost and final period cost;
the construction period cost comprises three-level index material transportation and processing cost, building installation engineering cost and other engineering construction cost; the operation and maintenance period cost comprises a three-level index daily maintenance cost and a special maintenance cost, and the final-stage cost comprises a three-level index abandonment cost and a renewable utilization cost;
the construction period performance simulation evaluation comprises three-level indexes of high-temperature permanent deformation, fatigue cracking and low-temperature cracking, the operation and maintenance period performance detection evaluation comprises three-level indexes of a pavement damage index, a running quality index, a rutting depth index, an anti-skid performance index and a pavement structural strength index, and the final-stage performance residual value evaluation comprises three-level indexes of asphalt performance residual values and aggregate performance residual values; the construction period environmental influence, the operation and maintenance period environmental influence and the final period environmental influence comprise three-level index greenhouse effect, ozone layer destruction, environmental acidification, photochemical smog, non-renewable resource exhaustion and human health damage;
the calculation formula of the comprehensive evaluation decision index Q of the ecological durability benefit is as follows:
Q＝ω C ·Q C +ω P ·Q P +ω E ·Q E (13)
in the formula, omega C Evaluating the weight for the economy; omega P Evaluating the weight for the technical performance; omega E Evaluating the weight for the environmental impact; q C Normalizing the value for economic evaluation; q P Normalizing the value for technical performance evaluation; q E The normalized values were evaluated for environmental impact.
2. The method for evaluating the ecological design, construction, operation and maintenance of the whole chain of the asphalt pavement according to claim 1, characterized by comprising the following steps: the calculation formula of the economic evaluation C is as follows:
in the formula, C m M =1,2,3 respectively represents the construction period cost, the operation and maintenance period cost and the final period cost of the asphalt pavement; omega m M =1,2,3 respectively represent evaluation weights of the corresponding secondary indexes;
the construction period cost C 1 The calculation formula of (c) is:
C 1 ＝C 11 +C 12 +C 13 (2)
in the formula, C 11 Material transportation and processing costs; c 12 Installation engineering costs for the building; c 13 Other costs for engineering construction;
the operation and maintenance period cost C 2 The calculation formula of (c) is:
C 2 ＝C 21 +C 22 (3)
in the formula, C 21 Cost for routine maintenance; c 22 Special maintenance cost;
said final end cost C 3 The calculation formula of (2) is as follows:
C 3 ＝C 31 +C 32 (4)
in the formula, C 31 Cost for disposal; c 32 Is a renewable utilization cost.
3. The method for evaluating the ecological design, construction and operation and maintenance of the whole chain of the asphalt pavement according to claim 1, which is characterized by comprising the following steps of: the calculation formula of the technical performance evaluation P is as follows:
in the formula, P m M =1,2,3 respectively represents the performance simulation evaluation result of the asphalt pavement in the construction period, the performance detection evaluation result of the operation and maintenance period and the performance residual value evaluation result of the final period; omega m M =1,2,3 respectively represent evaluation weights of the corresponding secondary indexes;
the construction period performance simulation evaluation P 1 The calculation formula of (c) is:
in the formula, P 1n N =1,2,3 respectively represent the simulation evaluation results of the high-temperature permanent deformation, fatigue cracking and low-temperature cracking performances of the asphalt pavement; omega 1n N =1,2,3 respectively represent evaluation weights of the corresponding three-level indexes;
the performance detection evaluation P of the operation and maintenance period 2 The calculation formula of (2) is as follows:
in the formula, P 2n N =1,2,3,4 respectively represents an asphalt pavement breakage index, a running quality index, a rut depth index and an anti-skid performance index; omega 2n N =1,2,3,4 respectively represent evaluation weights of the corresponding three-level indices;
the final end-stage residual Performance evaluation P 3 The calculation formula of (c) is:
in the formula, P 3n N =1,2 represents the residual asphalt performance value and the residual aggregate performance value respectively; omega 3n N =1,2 represents the evaluation weight of the corresponding three-level index.
4. The method for evaluating the ecological design, construction, operation and maintenance of the whole chain of the asphalt pavement according to claim 3, characterized by comprising the following steps: three-level index P for simulation evaluation of performance in construction period 1n The calculation formula of (2) is as follows:
in the formula, T n Representing a three-level index evaluation value corresponding to the simulation evaluation of the asphalt pavement construction period performance of the test group; t is n ' represents a three-level index evaluation value corresponding to the simulation evaluation of the performance of the asphalt pavement in the construction period of the reference control group;
the three-level index P of the final performance residual value evaluation 3n The calculation formula of (2) is as follows:
in the formula, M n Representing a three-level index evaluation value corresponding to the final performance residual value evaluation of the test group; m n ' evaluation of end-stage Performance residual of reference control groupAnd evaluating the three-level index corresponding to the price.
5. The method for evaluating the ecological design, construction and operation and maintenance of the whole chain of the asphalt pavement according to claim 1, which is characterized by comprising the following steps of: the calculation formula of the environmental impact evaluation E is as follows:
in the formula, E m M =1,2,3 respectively represents the construction period environmental influence, the operation and maintenance period environmental influence and the final period environmental influence of the asphalt pavement; omega m M =1,2,3 respectively represent evaluation weights of the corresponding secondary indexes;
secondary index E of the environmental impact evaluation 1 、E 2 、E 3 The calculation formula of (c) is:
in the formula, E j J =1,2,3 respectively represent the environmental impact of the asphalt pavement in three stages of construction period, operation and maintenance period and final period; k =1,2,3,4,5,6 respectively representing greenhouse effect, ozone layer depletion, environmental acidification, photochemical smog, exhaustion of non-renewable resources, human health damage; m is a unit of ji Represents the discharge amount of the i-th pollutant in the j stage; z represents the number of types of contaminants; TF ki And (3) representing a characterization factor (kg eq/kg) corresponding to the i-th pollutant when calculating the k environment influence index.
6. The method for evaluating the ecological design, construction and operation and maintenance of the whole chain of the asphalt pavement according to claim 1, which is characterized by comprising the following steps of: the analytic hierarchy process comprises the following steps of calculating and distributing the weight of each evaluation index:
1) Establishing a hierarchical structure model;
2) Carrying out comparison and scoring according to the scale of 1-9 of an analytic hierarchy process to construct a pair comparison matrix;
3) Calculating a weight vector and carrying out consistency check;
the method specifically comprises the following steps: calculating the product M of each row of the judgment matrix i ：
Wherein n represents the number of columns of the matrix;
calculating M i The root of the b th power:
will vector
Normalization to W = | W 1 W 2 …W n | T ；
The eigenvector is W = | W 1 W 2 …W n | T ；
Calculating a maximum characteristic root lambda max;
in the formula (AW) i Representing the ith element in the AW vector;
calculating a consistency index CI according to the maximum characteristic root;
in the formula, h is the number of paired comparison factors;
where CR is the consistency ratio, RI can be determined from a random consistency table query.
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