CN115841037A - Life cycle carbon emission accounting method for traffic infrastructure - Google Patents
Life cycle carbon emission accounting method for traffic infrastructure Download PDFInfo
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Abstract
The invention discloses a life cycle carbon emission accounting method for traffic infrastructure, which analyzes seven stages of material production, material transportation, part production, part transportation, construction and construction, operation and maintenance and waste demolition by establishing a life cycle carbon emission accounting model of the traffic infrastructure, considers the problem of change of extra carbon emission caused by maintenance, traffic delay and the like, generates gas emission along with resource consumption in each stage, and calculates the carbon emission in each stage by using a carbon emission factor method, thereby forming a life cycle carbon footprint model of the traffic infrastructure. The method is mainly used for quantifying the carbon emission of each stage of the traffic infrastructure, has complete accounting model and accurate accounting boundary and accounting result, and can support the traffic infrastructure to find key links for realizing carbon optimization in the whole life cycle process.
Description
Technical Field
The invention belongs to the field of traffic engineering, and particularly relates to a life cycle carbon emission accounting method of traffic infrastructure.
Background
With the development and progress of the economic society, the consumption of natural resources is increasing day by day, and the emission of a large amount of greenhouse gases causes serious climate problems. According to the statistics of relevant data, the annual emission of carbon dioxide exceeds 100 hundred million tons, wherein the emission of the traffic industry accounts for about 10 percent, and is ranked the third in all industries; the reduction of the consumption of resources and the influence on the environment by transportation is a necessary requirement for realizing the goals of carbon peak reaching and carbon neutralization. The whole process of production, transportation, construction, operation, maintenance and waste removal of the traffic infrastructure is likely to be accompanied by resource consumption and gas emission, and the premise of realizing carbon emission reduction and carbon optimization is how to quantify the carbon emission of the traffic infrastructure in each stage. The life cycle analysis is an evaluation method which analyzes and studies resource environmental problems caused by products and technologies so as to improve the products and technologies, so that energy consumption and emission problems of traffic infrastructures from stages of production, construction, operation, demolition and the like can be comprehensively analyzed by means of the life cycle analysis.
Chinese patent document CN114971371a discloses a "carbon emission accounting method for the whole life cycle of a building", in which a carbon emission accounting model calculates carbon emission data from 5 stages, such as a building material production stage, a building material transportation stage, a construction and construction stage, an operation and maintenance stage, a demolition and waste recovery stage, and the like, but a carbon emission calculation formula of the operation and maintenance stage is not explicitly given in the calculation method. Chinese patent document CN114971371a discloses a "dynamic analysis method for carbon emission in the whole life cycle of urban rail transit infrastructure", the life cycle list of which is mainly collected from the material production stage, the construction stage, the maintenance stage, and the abandonment stage, but the maintenance stage only considers the carbon emission generated by energy consumption due to maintenance or material replacement, and does not consider the increase of carbon emission caused by traffic delay due to maintenance behavior during normal operation. The technical scheme has the advantages that the used accounting model is incomplete, the accounting boundary is not accurate enough, and the carbon emission condition of the life cycle of the research object cannot be effectively reflected.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides a carbon emission accounting method for a traffic infrastructure life cycle, aiming at solving the technical problems that an existing traffic infrastructure carbon emission model is incomplete, an accounting boundary is not accurate enough, and the stage division of the accounting model is not detailed enough, and analyzing 7 stages of material production, material transportation, part production, part transportation, construction and construction, operation maintenance and waste dismantling, and considering the problem that extra carbon emission changes caused by maintenance, traffic delay and the like, the carbon emission of each stage is calculated by a carbon emission factor method, so that a carbon footprint calculation result of the traffic infrastructure life cycle is formed, the accounting model is more complete, the accounting boundary and the accounting result are more accurate, and the traffic infrastructure can be supported to be established to find a key link for realizing carbon optimization in the whole life cycle process.
The technical scheme is as follows: in order to solve the technical problem, the invention provides a life cycle carbon emission accounting method of traffic infrastructure, which comprises the following steps:
(1) Establishing a carbon emission accounting model of a life cycle of the traffic infrastructure;
(2) Calculating carbon emission in the production stage of the traffic infrastructure material;
(3) Calculating carbon emission of the transportation infrastructure material in a transportation stage;
(4) Calculating carbon emission of the traffic infrastructure parts in the production stage;
(5) Calculating carbon emission of transportation infrastructure parts in a transportation stage;
(6) Calculating carbon emission in the construction and construction stage of the traffic infrastructure;
(7) Calculating carbon emission in the operation and maintenance stage of the traffic infrastructure;
(8) Calculating carbon emission of a traffic infrastructure waste dismantling stage;
(9) And (3) calculating the total carbon emission of the traffic infrastructure in the whole life cycle according to the model in the step (1).
Preferably, in the step (1), the carbon emission measurement unit of the traffic infrastructure lifecycle carbon emission accounting model established by using the carbon emission factor method is carbon dioxide equivalent, and the symbol is expressed as CO 2 eq. The carbon dioxide equivalent of a gas is the ton of that gas multiplied by its greenhouse effect index. The six types of gases are greenhouse gases, namely carbon dioxide, methane, nitrous oxide, sulfur hexafluoride, hydrofluorocarbons, and perfluorocarbons, and these emissions all need to be converted to carbon dioxide equivalents.
Preferably, in the step (1), the traffic infrastructure life cycle carbon emission accounting model adopts cut-off rules, that is, when the material consumption quality is less than 5% of the total material consumption, the production process is not traced upstream, so as to avoid unnecessary time waste.
Preferably, in the step (1), the traffic infrastructure life cycle carbon emission accounting model comprises 7 stages including material production, material transportation, part production, part transportation, construction and construction, operation and maintenance, and waste demolition, and the calculation formula is as follows:
Q T ＝Q Pr +Q Tr +Q Ap +Q At +Q Co +Q op +Q Ma +Q Re
wherein Q is T Total carbon emission for the traffic infrastructure full lifecycle; q Pr Carbon emission for the production phase of the traffic infrastructure material; q Tr Carbon emission for transportation infrastructure material transportation phase; q Ap Carbon emission for the production stage of the traffic infrastructure parts; q At Carbon emission for transportation phase of traffic infrastructure parts; q Co Carbon emission in the construction and construction stage of the traffic infrastructure; q Ma Carbon emission is performed in the operation and maintenance stage of the traffic infrastructure; q Re And carbon emission is performed in the waste dismantling stage of the traffic infrastructure.
Preferably, in the step (2), the carbon emission in the transportation infrastructure material production stage is determined by the material consumption, the carbon emission factor and the calculation formula:
Q Pr ＝∑M Pr,i ×EF Pr,i
wherein, M Pr,i Represents the amount of the i material; EF Pr,i Representing the carbon emission factor of the ith material. The carbon emission in the production stage of the transportation infrastructure material refers to the carbon emission generated by the energy consumption of the required material in the process of tracing the raw material mining and processing upstream, namely the carbon emission of the material from the cradle to the gate, and the material supplier generally performs carbon footprint research and provides carbon emission data.
Preferably, in the step (3), the carbon emission in the transportation phase of the transportation infrastructure material is determined by the material transportation amount, the transportation distance, the transportation mode and the transportation loss rate, and the calculation formula is as follows:
Q Tr ＝∑M Tr,i ×D Tr,i ×EF Tr,i
wherein: m Tr,i Represents the transport volume of the ith material; d Tr,i Represents the transport distance of the i-th material; EF Tr,i And (3) a carbon emission factor per unit mass transport distance in the transport mode of the i-th material. The carbon emission in the transportation stage of the transportation infrastructure material refers to the carbon emission generated by the energy consumed in the transportation process of a transportation vehicle for transporting the material from a production place to a construction site.
Preferably, in the step (4), the carbon emission in the production stage of the traffic infrastructure component is determined by the production quantity of the component, the production mode and the production loss rate, and the calculation formula is as follows:
Q Ap ＝∑M Ap,i ×EF Ap,i
wherein: m Ap,i Indicating the production quantity of the ith type of parts; EF Ap,i The carbon emission factor produced per unit mass in the production mode of the ith part is shown. The carbon emission in the production stage of the traffic infrastructure parts refers to the carbon emission generated by energy consumption in the production process of the parts, such as the production of precast slabs, precast rails and the like.
Preferably, in the step (5), the carbon emission in the transportation stage of the transportation infrastructure component is determined by the transportation amount, the transportation distance, the transportation mode and the transportation loss rate of the component, and the calculation formula is as follows:
Q At ＝∑M At,i ×D At,i ×EF At,i
wherein: m At,i Representing the transportation amount of the ith part; d At,i The transportation distance of the ith type of parts is shown; EF At,i And (4) the carbon emission factor of the unit mass transportation distance under the transportation mode of the ith part. The carbon emission in the transportation stage of the transportation infrastructure parts refers to the carbon emission generated by energy consumed in the transportation process of transporting materials from a prefabrication factory or a mixing station to a construction site by a transportation vehicle.
Preferably, in the step (6), the carbon emission in the construction and construction stage of the traffic infrastructure is determined by the energy consumption, the carbon emission factor and the formula:
Q Co ＝∑E Co,i ×EF Co,i
wherein: e Co,i Represents the consumption of the ith energy; EF Co,i Represents a carbon emission factor of the ith energy source; q. q.s Co,i Representing the ith energy source. The carbon emission in the construction and construction stage of the traffic infrastructure is the carbon emission generated in the stage from the construction and construction of the traffic infrastructure to the acceptance of the construction. The main source of the method is carbon emission generated by energy consumption of various construction equipment on a construction site.
Preferably, in the step (7), the carbon emission in the operation and maintenance stage of the traffic infrastructure is divided into two parts, one part is the carbon emission caused by the materials and energy consumed by maintenance and maintenance, and the other part is the traffic carbon emission increment caused by traffic delay caused by maintenance and maintenance behaviors, and the calculation formula is as follows:
Q Ma ＝Q Mc +Q De
wherein Q is Mc Representing carbon emission caused by maintenance behaviors in the operation and maintenance stage of the traffic infrastructure; q De The method shows that in the operation and maintenance stage of the traffic infrastructure, vehicles cannot run according to normal road conditions, and phenomena such as acceleration, deceleration, queuing, congestion and the like occur, so that traffic delay occurs, and the extra carbon emission is increased. Traffic infrastructure operationThe carbon emission in the maintenance stage is the carbon emission in the stage from the opening operation to the waste use of the transportation infrastructure.
Q Mc ＝∑E Mc,i ×EF Mc,i
Wherein E is Mc,i The consumption of the ith energy consumed by maintenance is represented; EF Mc,i Representing the carbon emission factor of the ith energy source.
Q De ＝∑V De,i ×N De,i ×D De,i ×E De,i ×EF De,i
Wherein, V De,i An ith vehicle indicating traffic delay; n is a radical of hydrogen De,i Indicating the number of ith vehicles; d De,i Indicating a delay distance of the ith vehicle; e De,i Representing the energy consumption of the ith vehicle in unit delay distance; EF De,i A carbon emission factor representing the energy consumption of the ith vehicle.
Preferably, in the step (8), the calculation formula of the carbon emission in the traffic infrastructure waste dismantling stage is as follows:
Q Re ＝Q Rd +Q Rt
wherein Q is Rd Representing carbon emissions from materials and energy consumed by the demolition process; q Rt Which represents the carbon emission caused by the consumption of materials and energy in the garbage outward transportation process. Q Rd Representing carbon emissions from materials and energy consumed by the demolition process; q Rt Which represents the carbon emission caused by the consumption of materials and energy in the garbage outward transportation process.
Q Rd ＝∑E Rd,i ×EF Rd,i
Wherein: e Rd,i Representing the consumption of the ith energy consumed by the dismantling process; EF Rd,i Representing the carbon emission factor of the ith energy source.
Q Rt ＝∑V Rt,i ×N Rt,i ×D Rt,i ×E Rt,i ×EF Rt,i
Wherein: v Rt,i The ith vehicle for showing the outward transportation of the waste garbage; n is a radical of Rt,i Indicating the number of ith vehicles; d Rt,i Indicates the ith vehicleThe transport distance of the vehicle; e Rt,i Representing the energy consumption of the ith vehicle per unit transportation distance; EF Rt,i A carbon emission factor representing the energy consumption of the ith vehicle.
Has the advantages that: compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:
the method comprises the following steps of material production, material transportation, part production, part transportation, construction, operation maintenance and waste removal, wherein in 7 stages, the phenomena of acceleration, deceleration, queuing, congestion and the like caused by maintenance and maintenance, which are caused by the fact that vehicles cannot run according to normal road conditions, and further traffic delay is caused, so that the extra carbon emission is increased, and the carbon emission of each stage is calculated by a carbon emission factor method, so that the calculation result of the carbon footprint of the life cycle of the traffic infrastructure is formed, the calculation model is more detailed and complete, the calculation boundary and the calculation result are more accurate, and the key link for realizing carbon optimization can be found in the whole life cycle process by the traffic infrastructure.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of a traffic infrastructure life cycle of the present invention;
FIG. 3 is a schematic view of a pavement layer of a double-layer epoxy steel bridge deck.
Detailed Description
The technical scheme of the invention is further specifically described by the following examples and the accompanying drawings.
Example (b):
for a typical steel bridge deck pavement layer, a life cycle carbon emission accounting method of a double-layer epoxy steel bridge deck pavement layer comprises the following steps:
(1) Establishing a 'double-layer epoxy' steel bridge deck pavement life cycle carbon emission accounting model, wherein the model comprises 7 stages of material production, material transportation, part production, part transportation, construction and construction, operation and maintenance and waste demolition, and the carbon emission measurement unit is carbon dioxide equivalent.
(2) In the embodiment, the structural composition of the double-layer epoxy paving structure is selected to be an upper layer of 30mm epoxy asphalt concrete pavement and a lower layer of 30mm epoxy asphalt concrete pavement, and a half-width bridge deck with the length of 500m and the width of 11.25m is selected as a functional unit. Selecting 15 years as an analysis period, selecting a classical oilstone ratio and a common material composition, and determining that the material composition of each pavement layer is an epoxy asphalt binder: aggregate: mineral fines =26.475:366.488:40.725 in t.
(3) A material production stage: the epoxy asphalt concrete is a concrete material prepared by mixing epoxy resin, a curing agent and matrix asphalt which are subjected to complex chemical modification with a certain gradation of aggregate and mineral powder. The epoxy asphalt used in this example was a warm mix epoxy asphalt. As shown in figure 3, the epoxy asphalt adhesive layer and the epoxy zinc-rich paint anti-rust layer used for the pavement structure are low in material consumption, and according to cut-off rules, the carbon emission of the materials is not considered in the technical scheme.
(31) The warm-mixed epoxy asphalt is an epoxy asphalt material prepared by mixing two components, and the mixing temperature is generally controlled to be 110-130 ℃. The epoxy resin is a component (hereinafter referred to as component A); the curing component is another component (hereinafter referred to as component B), the component mainly comprises a curing agent, petroleum asphalt, other auxiliary agents and the like, and the two components are respectively produced and placed. The component A and the component B are 1:1 configuration. The carbon emission factor of the component A is 1910kg of CO 2 eq/t, carbon emission factor for component B is 2153kg CO 2 eq/t. The carbon emissions for the production of the a and B components are therefore: 13.2735 × 1910+13.2735 × 2153=53930.6kg CO 2 eq。
(32) The production process of aggregate and mineral powder relates to the technological processes of stone mining, crushing, vibrating screening and the like, and the generated environmental influence mainly comes from the operation of various mechanical equipment. The carbon emission factor used for the aggregate is 4.725kg CO 2 eq/t, carbon emission factor for mineral powder 190kg CO 2 eq/t. Therefore, the carbon emissions for aggregate and mineral powder production are: 366.488X 4.725+ 40.725X 190=9469.4kg CO 2 eq。
(33) The carbon emissions at the material production stage are therefore: 53930.6+9469.4=63400kgCO 2 eq。
(4) And (3) material transportation stage: carbon emission in the transport stage refers to transportThe transportation means transports the material from the production site to the construction site with carbon emissions from the energy consumed by the transportation process. The carbon emission factor used in the transport stage was 0.110kgCO 2 eq/(t.km), and a transport distance of 500km. The carbon emissions during the material transport phase are therefore: 433.76 × 0.110 × 500=23856.8kg CO 2 eq。
(5) And (3) production stage of parts: because the steel bridge deck pavement layer is not manufactured by prefabricated devices, the production stage of the parts mainly comprises the production of the epoxy asphalt mixture. The production link of the epoxy asphalt mixture relates to carbon emission generated by energy consumption of plant mixing equipment for producing the mixture, such as heating of the component A, the component B, the aggregate and the mineral powder and mixing preparation of the mixture. The carbon emission factor produced by the epoxy asphalt mixture is 13.736kgCO 2 eq/t. The carbon emissions at the production stage of the component are therefore: 433.76 × 13.736=5958.1kgCO 2 eq。
(6) And (3) part transportation stage: the stage is to transport the epoxy asphalt mixture to the construction site. The carbon emission factor used in the transportation stage of the parts is 0.110kgCO 2 eq/(t.km), and a transport distance of 10km. The carbon emissions during the transport phase of the parts are therefore: 433.76 × 0.110 × 10=477.1kgco 2 eq。
(7) And (3) construction and construction stage: after the epoxy asphalt mixture is transported to a construction site, the whole process of paving the steel bridge deck pavement layer can be completed only by paving and rolling. The carbon emission factor of the epoxy asphalt mixture in the paving stage is 0.293kgCO 2 eq/t, carbon emission factor at rolling stage 0.400kgCO 2 eq/t. Therefore, the carbon emission in the construction stage is: 433.76 x (0.293 + 0.400) =300.6kgCO 2 eq。
(8) And (3) operation and maintenance stage: the carbon emission in the stage is from the opening operation to the abandonment use of the steel bridge deck pavement layer. The carbon emission in the stage is divided into two parts, one part is the carbon emission caused by materials and energy consumed by maintenance, and the other part is the traffic carbon emission increment caused by traffic delay caused by maintenance behaviors.
(81) Carbon emission caused by materials and energy consumed by maintenance: along with the increase of service life of the asphalt pavement layer of the steel bridge deck and the reduction of the performance of pavement materials, some diseases inevitably occur in the pavement layer in the using process, so that the smooth operation of the bridge is influenced, the service performance of the pavement layer can be improved by maintaining the bridge deck in time, and the service life of the pavement layer is prolonged. Maintenance of the asphalt pavement of the steel bridge deck can be divided into three types, namely preventive maintenance, corrective maintenance and pavement reconstruction, according to the classification standard of asphalt pavement maintenance and the characteristics of steel bridge deck support. This example illustrates the application of ultra-thin overlay and milling and re-application.
(82) Laying an ultrathin cover: for the additionally paved ultrathin overlay, the process comprises material production and transportation, mixture mixing, paving and rolling, and the process is basically similar to the process of paving a newly paved steel bridge deck. Therefore, referring to a newly paved steel bridge deck pavement layer, the thickness of the epoxy asphalt mixture is 1cm when the ultrathin overlay surface is paved, the maintenance frequency is 3 years/time, and the carbon emission factor for paving the ultrathin overlay surface is 216.7kgCO 2 eq/t. Assuming that 10t of epoxy asphalt mixture needs to be consumed once each time of additionally laying the ultrathin cover, the maintenance frequency is 5 times, so the carbon emission of the additionally laying ultrathin cover is as follows: 216.7 × 10 × 5=10835kgCO 2 eq。
(83) Milling and re-paving: for milling, re-paving and overhaul, the process comprises milling a steel bridge pavement layer, producing and transporting materials, mixing mixtures, transporting, paving and rolling, removing the steel bridge pavement layer and milling, wherein other links are basically similar to those of a newly paved steel bridge pavement layer. In the stage, the carbon emission generated by milling and planing the epoxy asphalt mixture of unit mass is mainly calculated, and other links are calculated according to the steps. Therefore, referring to a newly paved steel bridge deck pavement layer, the selected curing frequency is 10 years/time, and the carbon emission factor for milling and re-paving is 219.5kgCO 2 eq/t. Assuming that 200t of epoxy asphalt mixture needs to be consumed for once milling and re-paving, the maintenance frequency is 1 time, so the carbon emission amount of milling and re-paving is as follows: 219.5 × 200 × 1=43900kgCO 2 eq/t。
(84) Traffic carbon emission increment due to traffic delay caused by maintenance and maintenance actions: in the maintenance construction process of the steel bridge deck, vehicles cannot run according to normal road conditions, and phenomena such as acceleration, deceleration, queuing, congestion and the like occur, so that traffic delay occurs, and the extra carbon emission is increased.
(85) Assuming that the maintenance construction seals 1 lane, the total length of a maintenance construction area is 3km, the speed limit value is 40km/h, the average oil consumption of vehicles per hundred kilometers is 5.3L, the traffic volume is 1000pcu/h, the total delay time of the construction area in one day is 33.65h, the total delay distance is 1346km, the total fuel oil consumption is 106.9kg, and the carbon emission is 7922.3kgCO 2 eq。
(86) For milling and re-paving construction, assuming a construction period of 10 days, the increment of carbon emission caused by traffic delay is as follows: 7922.3 × 10 × 1= 7922323kgCO 2 eq；
(87) For overlay construction, assuming a construction period of 1 day, the carbon emission increment caused by traffic delay is as follows: 7922.3 × 1 × 5=39611.5kgCO 2 eq。
(9) A waste dismantling stage: carbon emission in the waste demolition stage is mainly generated by energy consumption of demolition equipment and outward transportation of waste garbage.
(91) The carbon emission in the process of dismantling the steel bridge deck pavement layer can refer to the milling process of milling and re-paving the step (83), and the carbon emission factor in the milling process is 2.66kgCO 2 eq/t. The carbon emission in the dismantling process is as follows: 433.76 × 2.66=1153.8kgCO 2 e q。
(92) The carbon emission in the outward transportation process of the waste garbage can refer to the material transportation stage in the step (4), and the carbon emission factor in the outward transportation process is 0.110kgCO 2 eq/(t km), and a transport distance of 100km. The carbon emission in the outward transportation process of the waste garbage is as follows: 433.76 × 0.110 × 100=4771.4kgCO 2 e q。
(93) The carbon emissions of the waste demolition stage are therefore: 1153.8+4771.4=5925.2kgCO 2 e q。
(10) Calculating the total carbon emission amount of the life cycle of the double-layer epoxy steel bridge deck pavement layer: 63400+23856.8+5958.1+477.1+300.6+173569.5+5925.2=273487.3kgCO 2 e q。
The results are shown in Table 1. As shown in table 1, the life cycle carbon footprint of the "double epoxy" steel deck pavement layer is mainly concentrated in two stages of operation maintenance and material production, and occupies 86.65% of the total emission. Therefore, the selection of the material with low carbon emission is the key for reducing the total carbon emission in the life cycle of the steel bridge deck pavement.
TABLE 1 double-layer epoxy asphalt steel bridge deck pavement life cycle carbon footprint
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Although the life cycle carbon emission accounting model is used more herein and terms such as material production, material transportation, parts production, parts transportation, construction, operational maintenance, and demolition of waste, the possibility of using other terms is excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A life cycle carbon emission accounting method for a traffic infrastructure, comprising the steps of:
(1) Establishing a carbon emission accounting model of a life cycle of the traffic infrastructure;
(2) Calculating carbon emission in the production stage of the traffic infrastructure material;
(3) Calculating carbon emission of the transportation infrastructure material in a transportation stage;
(4) Calculating carbon emission of the traffic infrastructure parts in the production stage;
(5) Calculating carbon emission of transportation infrastructure parts in a transportation stage;
(6) Calculating carbon emission in a construction and construction stage of the traffic infrastructure;
(7) Calculating carbon emission in the operation and maintenance stage of the traffic infrastructure;
(8) Calculating carbon emission of a traffic infrastructure waste dismantling stage;
(9) And (3) calculating the total carbon emission of the traffic infrastructure in the whole life cycle according to the model in the step (1).
2. The life cycle carbon emission accounting method for traffic infrastructure according to claim 1, wherein in the step (1), the carbon emission measurement unit of the carbon emission accounting model is carbon dioxide equivalent, and the symbol is expressed as CO 2 eq。
3. The method for accounting for carbon emission in life cycle of transportation infrastructure according to claim 1, wherein in the step (1), the life cycle of the transportation infrastructure comprises seven stages of material production, material transportation, part production, part transportation, construction and construction, operation and maintenance, and waste demolition, and the traffic infrastructure life cycle carbon emission accounting model is built according to the seven stages as follows:
Q T ＝Q Pr +Q Tr +Q Ap +Q At +Q co +Q Ma +Q Re
wherein Q is T Total carbon emission for the traffic infrastructure full lifecycle; q Pr Carbon emission for the production phase of the traffic infrastructure material; q Tr Carbon emission for transportation phase of transportation infrastructure materials; q Ap Carbon emission for the production phase of the traffic infrastructure components; q At Carbon emission for transportation phase of traffic infrastructure parts; q co Carbon emission in the construction and construction stage of the traffic infrastructure; q Ma Carbon emission is performed in the operation and maintenance stage of the traffic infrastructure; q Re And carbon emission is performed in the waste dismantling stage of the traffic infrastructure.
4. The method for calculating the carbon emission in the life cycle of the transportation infrastructure as claimed in claim 1, wherein in the step (2), the carbon emission in the material production stage of the transportation infrastructure is determined by the material consumption and the carbon emission factor, and the calculation formula is as follows:
Q Pr ＝∑M Pr，i ×EF Pr，i
in the formula: m Pr，i Represents the amount of the i material; EE pr，i Representing the carbon emission factor of the ith material.
5. The method for calculating life cycle carbon emission of traffic infrastructure as claimed in claim 1, wherein in the step (3), the carbon emission of the material transportation phase of the traffic infrastructure is determined by the material transportation amount, the transportation distance and the transportation mode, and the calculation formula is as follows:
Q Tr ＝∑M Tr，i ×D Tr，i ×EF Tr，i
in the formula: m Tr，i Represents the transport volume of the ith material; d Tr，i Represents the transport distance of the i-th material; EF Tr，i And (3) a carbon emission factor per unit mass transport distance in the transport mode of the i-th material.
6. The method for calculating carbon emission in life cycle of traffic infrastructure as claimed in claim 1, wherein in step (4), carbon emission in production stage of traffic infrastructure component is determined by production quantity and production mode of component, and the calculation formula is:
Q Ap ＝∑M Ap，i ×EF Ap，i
in the formula: m Ap，i Indicating the production of the ith part; EF Ap，i The carbon emission factor produced per unit mass in the production mode of the ith part is shown.
7. The method for calculating carbon emission in life cycle of transportation infrastructure as claimed in claim 1, wherein in the step (5), the carbon emission in transportation phase of transportation infrastructure component is determined by transportation amount, transportation distance and transportation mode of the component, and the calculation formula is as follows:
Q At ＝∑M At，i ×D At，i ×EF At，i
in the formula: m At，i Representing the transportation amount of the ith part; d At，i The transportation distance of the ith type of parts is shown; EF At，i And (3) a carbon emission factor per unit mass transport distance in the transport mode of the ith part.
8. The method for accounting for carbon emission in life cycle of traffic infrastructure, according to claim 1, wherein in the step (6), carbon emission in construction and construction stage of traffic infrastructure is determined by energy consumption and carbon emission factor, and the calculation formula is as follows:
Q Co ＝∑E Co，i ×EF Co，i
in the formula: e Co，i Represents the consumption of the ith energy; EF Co，i Representing the carbon emission factor of the ith energy source.
9. The method for calculating carbon emission in life cycle of traffic infrastructure as claimed in claim 1, wherein in the step (7), the operation and maintenance phase of the traffic infrastructure is divided into two parts, one part is carbon emission of the traffic infrastructure caused by consumed materials and energy for maintenance and maintenance, and the other part is traffic carbon emission increment caused by traffic delay caused by maintenance and maintenance behavior, and the calculation formula is as follows:
Q Ma ＝Q Mc +Q De
in the formula: q Mc Representing carbon emission caused by maintenance behaviors in the operation and maintenance stage of the traffic infrastructure; q De Representing carbon emission caused by traffic delay in the operation and maintenance phase of the traffic infrastructure;
wherein Q is Mc Calculating energy consumption and carbon emission factors caused by maintenance; q De The type, number and distance of vehicles delayed by traffic are determined;
Q Mc ＝∑E Mc，i ×EF Mc，i
in the formula: e Mc，i The consumption of the ith energy consumed by maintenance is represented; EF Mc，i Indicates the ith energyA carbon emission factor of the source;
Q De ＝∑V De，i ×N De，i ×D De，i ×E De，i ×EF De，i
in the formula: v De，i An ith vehicle indicating traffic delay; n is a radical of De，i Indicating the number of ith vehicles; d De，i Indicating a delay distance of the ith vehicle; e De，i Representing the energy consumption of the ith vehicle in unit delay distance; EF De，i A carbon emission factor representing the energy consumption of the ith vehicle.
10. The method for calculating carbon emission in life cycle of traffic infrastructure according to claim 1, wherein in the step (8), the traffic infrastructure waste removal stage is divided into two parts, one part is carbon emission caused by materials and energy consumed by the traffic infrastructure removal process, and the other part is carbon emission caused by materials and energy consumed by the waste transportation process, and the calculation formula is as follows:
Q Re ＝Q Rd +Q Rt
in the formula: q Rd Representing carbon emissions from materials and energy consumed by the demolition process; q Rt Which represents the carbon emission caused by the consumption of materials and energy in the garbage outward transportation process.
Wherein Q is Rd Calculating energy consumption and carbon emission factors caused by the dismantling process; q De The type, number and transport distance of the vehicles for transporting the waste garbage outwards are determined;
Q Rd ＝∑E Rd，i ×EF Rd，i
in the formula: e Rd，i Representing the consumption of the ith energy consumed by the dismantling process; EF Rd，i Representing the carbon emission factor of the ith energy source.
Q Rt ＝∑V Rt，i ×N Rt，i ×D Rt，i ×E Rt，i ×EF Rt，i
In the formula: v Rt，i The ith vehicle for showing the outward transportation of the waste garbage; n is a radical of Rt，i To representThe number of ith vehicles; d Rt，i Representing the transport distance of the ith vehicle; e Rt，i Representing the energy consumption of the ith vehicle per unit transportation distance; EF Rt，i A carbon emission factor representing the energy consumption of the ith vehicle.
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