Station building carbon emission measuring method based on life cycle analysis

Abstract

The invention discloses a station building carbon emission measurement method based on life cycle analysis, and relates to the technical field of carbon emission measurement, and the method comprises the following components: S1, station building life cycle stage division, S2, carbon emission calculation of each stage, and S3, full life cycle carbon emission summarization. According to the method, the life cycle stages of the station building are divided in detail, and the carbon emission of each stage is calculated, so that the carbon emission condition of the station building in the whole life cycle can be comprehensively and systematically evaluated, the comprehensive evaluation is beneficial to accurately understanding the carbon emission source and emission of the station building, and the evaluation efficiency is improved. Scientific basis is provided for subsequent formulation of energy-saving and emission-reducing measures, so that green construction and sustainable development of the station building are promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission measurement, and specifically to a method for measuring the carbon emissions of a station building based on life cycle analysis. Background Art

[0002] With the increasingly severe global climate change problem, the measurement and management of carbon emissions have become the focus of attention in all industries. In the construction field, as an important infrastructure, the carbon emissions during the construction and operation of a station building cannot be ignored.

[0003] Traditional technologies have deficiencies. The measurement of carbon emissions from station buildings often focuses on a specific stage, such as the operation stage, while ignoring the carbon emissions in other important stages such as building material production, transportation, construction, and demolition and recycling. This one-sided evaluation method cannot accurately reflect the true carbon emissions of the station building, and it is easy to lead to the lack of a scientific basis for formulating energy conservation and emission reduction measures. In addition, traditional technologies also lack an effective evaluation of data quality, making it difficult to ensure the reliability and accuracy of carbon emission data, thereby affecting subsequent analysis and decision-making.

[0004] In summary, the traditional method for measuring the carbon emissions of station buildings has obvious limitations and cannot meet the current demand for a comprehensive and systematic evaluation of carbon emissions. Therefore, it is particularly important to develop a method for measuring the carbon emissions of station buildings based on life cycle analysis. Summary of the Invention

[0005] The purpose of the present invention is to make up for the deficiencies of the existing technology and provide a method for measuring the carbon emissions of a station building based on life cycle analysis. It can comprehensively and systematically evaluate the carbon emissions of the station building throughout its life cycle by detailedly dividing the life cycle stages of the station building and calculating the carbon emissions for each stage. At the same time, this method also pays attention to the evaluation of data quality to ensure the reliability and accuracy of carbon emission data, providing a scientific basis for formulating subsequent energy conservation and emission reduction measures and promoting the green construction and sustainable development of the station building.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A method for measuring the carbon emissions of a station building based on life cycle analysis, and the specific steps of this method are as follows: S1. Division of the life cycle stages of the station building The entire life cycle of the station building is divided in detail, specifically into the building material production stage, the building material transportation stage, the construction stage, the operation and use stage, and the demolition and recycling stage. In the building material production stage, it mainly involves the production and manufacturing process of various building materials. The building material transportation stage is the process of transporting the produced building materials to the station building construction site. The construction stage is the construction activity of actually building the station building using the building materials transported to the site. The operation and use stage is the stage when the station building is put into normal use after completion. The demolition and recycling stage is the stage of recycling the materials after demolition during the demolition process when the station building reaches the end of its service life or needs to be demolished for other reasons; S2. Calculation of carbon emissions in each stage The carbon emission coefficient method is used to calculate the carbon emissions in each stage. This method combines the activity levels of carbon emission sources in each stage with the corresponding carbon emission factors. For each stage, detailed data on the activity levels of carbon emission sources in this stage are collected. In the building material production stage, the specific consumption of various building materials is collected. In the building material transportation stage, the transportation distance, transportation method, etc. of the building materials are recorded; in the construction stage, the usage duration of construction machinery and equipment, the labor volume of construction workers, etc. are obtained; in the operation and use stage, the energy consumption of the station building is monitored; in the demolition and recycling stage, the energy usage during the demolition process and the quantity of recycled materials are counted; Search for or determine the carbon emission factors corresponding to each carbon emission source. The carbon emission factor refers to the statistical average of the carbon emissions generated per unit product or service under normal technical standards and management conditions, which can be obtained by referring to relevant standards, literature, or industry databases; Multiply the activity level data of the carbon emission sources collected in each stage by the corresponding carbon emission factors to obtain the carbon emissions in each stage; S3. Aggregation of carbon emissions throughout the life cycle Aggregate the carbon emissions calculated above to finally obtain the carbon emissions throughout the life cycle of the station building. In this way, the carbon emission situation of the station building throughout its life cycle can be comprehensively and systematically understood, providing a scientific basis for formulating and evaluating subsequent energy conservation and emission reduction measures.

[0007] Furthermore, the life cycle of the building is the life cycle of its components. Therefore, the carbon emissions throughout the entire life cycle of building components should be the sum of the carbon emissions in the building material production stage, the building material transportation stage, the construction stage, the operation and use stage, and the building demolition stage. Thus, the carbon emission calculation model for the life cycle of building components is:

[0008] where is the carbon emission throughout the building life cycle, with the unit of , is a component of the carbon dioxide molecular formula, Representative equivalent is the carbon emission in the production stage of building materials and building components, with the unit of , which is a component of the carbon dioxide molecular formula Representative equivalent is the carbon emission in the transportation stage of building materials and building components, with the unit of , which is a component of the carbon dioxide molecular formula Representative equivalent is the carbon emission in the construction stage of building construction, with the unit of , which is a component of the carbon dioxide molecular formula Representative equivalent is the carbon emission in the operation and use stage of buildings, with the unit of , which is a component of the carbon dioxide molecular formula Representative equivalent is the carbon emission in the demolition stage of buildings, with the unit of , which is a component of the carbon dioxide molecular formula Representative equivalent

[0009] Furthermore, in the production stage of building materials and building components, the consumption of building materials is statistically calculated according to the bill of quantities for station construction, and the carbon emissions generated by the consumption of building materials are calculated according to the carbon emission factors of various building materials:

[0010] wherein is the quantity or consumption of the th type of building material , is the carbon emission factor of the th type of building material .

[0011] Furthermore, in the transportation stage of building materials and building components, the energy consumption generated during transportation is estimated according to the average transportation distance, transportation mode, and base-period carbon emission factor of the building materials, and then its carbon emissions are calculated:

[0012]

[0013] wherein is the number of shifts of the th type of machine during the transportation and loading / unloading of prefabricated components, is the carbon emission factor of the th type of machine during the process ( );

[0014] Among them is the quality of Class , is the carbon emission coefficient of transportation Class , is the transportation distance of Class .

[0015] Furthermore, in the construction stage, the consumption of machinery shifts during the construction process is calculated based on the quantity of the construction project and the corresponding quota, and the electricity and fuel consumption are calculated to obtain their carbon emissions;

[0016] Among them is the carbon emission of labor during the installation construction process , the carbon emission of materials during the installation construction process and the carbon emission of machinery during the installation construction process ;

[0017] Among them is the labor consumption , and the carbon emission factor of labor

[0018]

[0019] Among them is the quantity or amount of Class , is the carbon emission factor of Class

[0020]

[0021] Among them is the number of Class machines during the transportation and loading / unloading of prefabricated components, is the carbon emission coefficient of Class .

[0022] Furthermore, in the operation and maintenance stage, the annual average carbon emission per unit building area is analyzed according to different energy consumption systems;

[0023] Among them is the carbon emission of building operation , is the carbon emission of building maintenance .

[0024] Furthermore, the carbon emission calculation formula for the demolition and recycling stage is:

[0025] Among them is the lighting carbon emission during building operation, is the heating carbon emission during building operation, is the refrigeration carbon emission during building operation, is the water supply carbon emission during building operation, is the elevator operation carbon emission during operation.

[0026] Furthermore, when calculating the carbon emissions of each stage, data quality assessment is carried out on the collected activity level data and carbon emission factor data, and a data reliability assessment algorithm is adopted. The formula is:

[0027] Among them represents the data reliability score, and the value range is 0 - 1. The higher the score, the higher the data reliability, is the weight of the th data, which is determined according to the credibility of the data source and the importance of the data type. The value range is 0 - 1. For data monitored by authoritative institutions, the value is relatively high, is the th data value, is the average value of the same type of data. When the data reliability score is lower than the set threshold, the data is corrected or supplemented to ensure the accuracy of carbon emission calculation.

[0028] Compared with the prior art, the method for measuring the carbon emission of the station building based on life cycle analysis has the following beneficial effects: First, by dividing the life cycle stage of the station building in detail and calculating the carbon emissions for each stage, this method can comprehensively and systematically evaluate the carbon emissions of the station building throughout its life cycle. This comprehensive evaluation helps to accurately understand the carbon emission sources and emissions of the station building, providing a scientific basis for formulating subsequent energy conservation and emission reduction measures, thereby promoting the green construction and sustainable development of the station building.

[0029] Second, when calculating carbon emissions at each stage, this method focuses on evaluating the data quality of the collected activity level data and carbon emission factor data. By using a data reliability evaluation algorithm, it comprehensively considers the weight of the data, the data value, and the average value of similar data to obtain a data reliability score. When the data reliability score is lower than the set threshold, the data will be corrected or supplemented to ensure the accuracy of carbon emission calculations. This data quality evaluation mechanism can ensure the reliability and accuracy of carbon emission data, providing a more solid foundation for subsequent analysis and decision-making.

[0030] Other advantages, objectives, and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0032] Figure 1 It is a flowchart of the operation of the method for measuring the carbon emissions of a station building based on life cycle analysis; Figure 2 It is a detailed flowchart of the method for measuring the carbon emissions of a station building based on life cycle analysis. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention objective, the following will, in conjunction with the accompanying drawings and preferred embodiments, describe in detail the specific embodiments, structures, features, and their effects of the present invention as follows.

[0034] Embodiment 1 This embodiment describes the planning and construction of a small railway station building in the suburbs of a certain city, aiming to serve the daily travel of surrounding residents and the logistics transportation within the region. The building area of this station building is 2000 square meters, designed as a two-story building, and a concrete frame structure is adopted to ensure the stability and durability of the building.

[0035] The main building materials required for the station building construction, such as cement, steel, and glass, are purchased from different factories in the surrounding areas. Among them, cement comes from Cement Plant A, which is 80 kilometers away from the construction site, steel is supplied by Steel Plant B, which is 120 kilometers away, and glass is purchased from Glass Plant C, which is 100 kilometers away. The average transportation distance is about 100 kilometers, and the building materials are mainly transported to the construction site by road.

[0036] The construction team plans to complete the construction of the station building within 6 months. During the construction period, various mechanical equipment such as cranes, concrete mixers, and transport vehicles were put into use to ensure the construction progress and quality. After the station building was completed, it was put into normal operation. The main energy-consuming equipment includes lighting systems, air-conditioning systems, and a passenger elevator. The service life of the station building is expected to be 50 years. After reaching the service life, it will be dismantled and recycled in accordance with environmental protection requirements, and the usable materials will be reprocessed.

[0037] According to the detailed bill of quantities, the station building construction consumed 500 tons of cement, 100 tons of steel, and 500 square meters of glass. After consulting relevant industry data and carbon emission databases, the carbon emission factor of cement was determined to be 900. , the carbon emission factor of steel is 1800 , the carbon emission factor of glass is 30 , using the formula Calculate carbon emissions during the production of building materials: .

[0038] Taking into account the carbon emissions during the transportation of building materials, the transport vehicles are 20-ton trucks. Each truck makes one round trip as a shift, with a total of 50 trips. According to transportation industry data, the carbon emission coefficient per ton-kilometer of such transport vehicles on road is 0.15. , combined with the formula , calculate the carbon emissions during the transportation of building materials: .

[0039] During the construction period, a total of 3,000 working days were invested. Based on the carbon emission data of the construction industry, the artificial carbon emission factor was determined to be 0.5. Working days, according to the formula , calculate artificial carbon emissions as:

[0040] During the construction process, in addition to the main building materials, some auxiliary materials such as wood and pipes were also used. The carbon emissions of these additional building materials were calculated to be 5000 .

[0041] During the construction period, the crane was used for 50 shifts, and the concrete mixer was used for 100 shifts. By querying the carbon emission data provided by the machinery manufacturing enterprise, the carbon emission factor of the crane is 50 shifts, and the carbon emission factor of the concrete mixer is 30 shifts. According to the formula , the carbon emissions of construction machinery are calculated as follows:

[0042] Adding up the above items, according to the formula we can get:

[0043] Carbon emissions of the lighting system: The lighting system of the station building selects energy-saving lamps, and the annual power consumption for lighting is about 50,000 kWh. According to the carbon emission factor of the local power grid, the carbon emission per kWh is 0.8 kgCO2 / kWh. Then the annual carbon emissions of the lighting system are: .

[0044] Carbon emissions of the air conditioning system: To ensure a comfortable environment in the station, the air conditioning system operates for a long time every year, with a power consumption of 80,000 kWh. Calculated according to the same carbon emission factor, the annual carbon emissions of the air conditioning system are: .

[0045] Carbon emissions of the elevator: The passenger elevator operates frequently every day, with an annual power consumption of about 30,000 kWh. Its annual carbon emissions are: .

[0046] Carbon emissions of building maintenance: During the operation of the station building, regular maintenance work needs to be carried out, including wall painting and equipment maintenance. The annual carbon emissions during the maintenance process are about 5,000 kgCO2.

[0047] Annual carbon emissions during the operation and use stage: According to the formula , adding up the above items, the annual carbon emissions during the operation and use stage can be obtained as: .

[0048] Carbon emissions during the 50-year operation period: .

[0049] When demolishing the station building, demolition machinery such as excavators and crushers was used. The total carbon emissions of these equipment during the demolition process are 30,000 . After demolition, some building materials such as steel and wood are recycled. Through recycling and reprocessing, 2,000 of carbon emissions are reduced (this data is estimated based on the emission reduction data of the relevant material recycling industry). Then the carbon emissions during the demolition and recycling stage are: .

[0050] Combined formula , add the carbon emissions of each stage to calculate the carbon emissions of the entire life cycle of the small railway station building:

[0051] Example 2 This example describes the detailed measurement and analysis of carbon emissions during the construction and operation of a newly built highway service area building.

[0052] Most of the bricks, sand, and gravel required for the construction of the service area building are produced in local building material factories. The local brick factories use traditional firing processes, consuming a large amount of coal during firing and generating a certain amount of carbon emissions. The sand and gravel are mined and processed from nearby mines. The operation of the mining equipment and the energy consumption during processing also involve carbon emissions. Since the insulation materials cannot be produced locally, they need to be purchased from a professional manufacturer 500 kilometers away. The manufacturer uses specific chemical raw materials and production processes during the production of insulation materials, and this process also generates carbon emissions.

[0053] Due to their large quantity and heavy weight, bricks and sand and gravel are transported by short-haul trucks, and the transportation distance is basically within 50 kilometers. These short-haul trucks are mostly diesel vehicles. During transportation, the combustion of diesel will emit carbon dioxide. Since the insulation materials are transported over a longer distance, long-haul trucks are used, with a driving mileage of about 500 kilometers. During long-haul transportation, the truck engines run continuously, consuming a large amount of fuel and thus generating more carbon emissions.

[0054] The construction team conducts foundation pouring, wall masonry, and roof installation work on-site. During the construction process, the labor activities of workers will generate carbon emissions. For example, when workers use hand-held tools and carry materials, these activities all consume energy, and the generation of energy is often accompanied by carbon emissions. Construction machinery such as excavators, cranes, and concrete mixers consume diesel during operation and are one of the main sources of carbon emissions. In addition, some auxiliary materials such as cement and steel bars are consumed during the construction process, and these materials will also generate additional carbon emissions during production, transportation, and use.

[0055] After the service area building is put into use, it provides rest, dining, and refueling services for passing drivers and passengers. The lighting system in the station runs continuously for 24 hours. Although energy-saving lamps are used, they still consume a large amount of electricity when turned on for a long time, and carbon emissions are generated during the power generation process. The ventilation system runs continuously to keep the indoor air fresh, consuming a certain amount of electricity. The hot water supply system uses gas to heat water, and the combustion of gas will emit carbon dioxide. In addition, the daily maintenance work of the building, such as cleaning and equipment repair, will also generate a certain amount of carbon emissions.

[0056] Suppose that after 30 years of use, the service area building needs to be demolished due to the upgrade and transformation of the service area. During the demolition process, large demolition machinery such as hydraulic breakers and cranes are used. These machines consume a large amount of fuel during operation and generate carbon emissions. Some of the materials after demolition, such as steel and bricks, will be recycled. During the recycling process, the materials need to be classified, transported, and processed, and these links will also generate a certain amount of carbon emissions.

[0057] After statistics, 500,000 bricks were used in the construction of the building. Calculated at 2.5 kg per brick, the total is 1250 tons. During the production process of these bricks, due to coal combustion and firing process reasons, each ton of bricks generates 300 kg of carbon dioxide emissions. Therefore, the carbon emissions from brick production are 375,000 kg. 2000 cubic meters of sand and gravel were used, calculated at 1.5 tons per cubic meter, which is 3000 tons. Each ton of sand and gravel generates 50 kg of carbon dioxide emissions during mining and processing. The carbon emissions from sand and gravel production are 150,000 kg. 100 cubic meters of thermal insulation materials generate 1000 kg of carbon dioxide emissions per cubic meter during the production process. The carbon emissions from thermal insulation material production are 100,000 kg. The total carbon emissions in the building materials production stage are 625,000 kg.

[0058] For trucks transporting bricks and sand and gravel over short distances, the carbon emissions per ton-kilometer are approximately 0.1 kg. The total weight of bricks and sand and gravel is 4250 tons, and the average transportation distance is 50 kilometers. Therefore, the carbon emissions generated by short-distance transportation are 21,250 kg. There are 100 cubic meters of thermal insulation materials, calculated at 1.5 tons per cubic meter, for a total of 150 tons. The carbon emissions per ton-kilometer of long-distance transportation trucks are 0.12 kg, and the transportation distance is 500 kilometers. The carbon emissions generated by long-distance transportation of thermal insulation materials are 9000 kg. The total carbon emissions in the building materials transportation stage are 30,250 kg.

[0059] During the construction process, the workers' labor consumed 4000 working days. For each working day, the carbon emissions generated by the workers' activities are approximately 0.6 kg. Therefore, the carbon emissions from labor are 2400 kg. The construction machinery was used for 80 shifts, and the carbon emissions per shift are approximately 55 kg. The carbon emissions from machinery are 4400 kg. The additional carbon emissions generated by auxiliary materials such as cement and steel bars used during the construction process during production, transportation, and use are calculated to be 4000 kg. The total carbon emissions in the construction stage are 10,800 kg.

[0060] The floor area of the service area building is 2000 square meters, and the average annual operating carbon emissions per unit floor area are 60 kg. The annual operating carbon emissions are 120,000 kg. The annual maintenance work of the building, such as cleaning and equipment maintenance, generates approximately 1500 kg of carbon emissions. The annual carbon emissions in the operation and use stage are 121,500 kg.

[0061] When demolishing the station building, 40 mechanical work shifts were used. The carbon emissions per work shift were approximately 65 kg, and the carbon emissions generated during the demolition process were 2600 kg. During the process of recycling and reusing materials, such as melting steel back into the furnace and reprocessing bricks, the carbon emissions generated were approximately 1500 kg. The total carbon emissions during the demolition and recycling stage were 4100 kg.

[0062] Adding up the carbon emissions of the above-mentioned stages, the carbon emissions of the station building in the whole life cycle of the highway service area were 791650 kg. This data provides an important basis for subsequent evaluation of the environmental impact of the service area station building and formulation of energy conservation and emission reduction measures.

[0063] As described above, it is only the preferred embodiment of the present invention, and there is no any formal limitation to the present invention. Although the present invention has been disclosed as above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to be equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for measuring the carbon emissions of a station building based on life cycle analysis, characterized in that, The specific steps of this method are as follows: S1. Division of the life cycle stages of the station building The entire life cycle of the station building is divided, specifically into the building material production stage, building material transportation stage, construction stage, operation and use stage, and demolition and recycling stage. In the building material production stage, it mainly involves the production and manufacturing process of various building materials. The building material transportation stage is the process of transporting the produced building materials to the station building construction site. The construction stage is the construction activity of actually building the station building using the building materials transported to the site. The operation and use stage is the stage when the station building is put into normal use after completion. The demolition and recycling stage is the stage of recycling the materials after demolition when the station building reaches the end of its service life or needs to be demolished for other reasons; S2. Calculation of carbon emissions in each stage The carbon emission coefficient method is used to calculate the carbon emissions in each stage. This method combines the activity levels of carbon emission sources in each stage with the corresponding carbon emission factors. For each stage, the activity level data of carbon emission sources in this stage are collected in detail; Search for or determine the carbon emission factors corresponding to each carbon emission source. The carbon emission factor refers to the statistical average of the carbon emissions generated per unit product or service under normal technical standards and management conditions; Multiply the activity level data of the carbon emission sources collected in each stage by the corresponding carbon emission factors to obtain the carbon emissions in each stage; S3. Summarization of the carbon emissions in the whole life cycle Summarize the carbon emissions calculated above to finally obtain the carbon emissions in the whole life cycle of the station building.

2. The method for measuring the carbon emissions of a station building based on life cycle analysis according to claim 1, wherein The life cycle of the building is the life cycle of its components. Therefore, the carbon emissions in the whole life cycle of building components should be the sum of the carbon emissions in the building material production stage, building material transportation stage, construction stage, operation and use stage, and building demolition stage. Thus, the carbon emission calculation model for the life cycle of building components is: Among them is the carbon emission of the building life cycle, with the unit of , is the carbon emission in the building material production stage, with the unit of , is the carbon emission in the building material transportation stage, with the unit of , is the carbon emission in the building construction stage, with the unit of , is the carbon emission in the building operation and use stage, with the unit of , is the carbon emission in the building demolition stage, with the unit of .

3. The method for measuring the carbon emissions of a station building based on life cycle analysis according to claim 1, wherein In the building material production stage, the consumption of building materials is statistically counted according to the station construction bill of quantities, and the carbon emissions generated by the building material consumption are calculated according to the carbon emission coefficients of various building materials: Among them is the quantity or consumption of the -th type of building materials , is the carbon emission factor of the -th type of building materials 4. The method for measuring the carbon emissions of a station building based on life cycle analysis according to claim 1, wherein In the building material transportation stage, the energy consumption during transportation is estimated based on the average transportation distance, transportation mode, and base period carbon emission coefficient of the building materials, and then its carbon emissions are calculated: Among them is the shift of the type of machine during the transportation and handling of prefabricated components, is the carbon emission coefficient of the type of machine during the process ( ); Among them is the quality of building materials of type , is the carbon emission coefficient of transportation for building materials of type , and is the transportation distance of building materials of type .

5. The method for measuring the carbon emissions of a station building based on life cycle analysis according to claim 1, wherein In the construction stage, the consumption of construction machinery and equipment working shifts during the construction process is calculated according to the quantities of the construction project and the corresponding quotas, and the electricity and fuel consumption are calculated to obtain its carbon emissions; Among them is the artificial carbon emissions during the installation construction process , is the carbon emissions of materials during the installation construction process and is the carbon emissions of machinery during the installation construction process ; Among them is the labor consumption , and the artificial carbon emission factor wherein is the quantity or amount of Class building materials , and is the carbon emission factor of Class Among them is the number of machines of the type during the transportation and loading / unloading of prefabricated components, is the carbon emission coefficient of machines of the type during the process .

6. The method for measuring the carbon emissions of a station building based on life cycle analysis according to claim 1, wherein In the operation and maintenance stage, the average annual carbon emissions per unit building area are analyzed according to different energy consumption systems; Among them is the carbon emission of building operation , is the carbon emission of building maintenance 。 7. The method for measuring the carbon emissions of a station building based on life cycle analysis according to claim 1, wherein The carbon emission calculation formula for the demolition and recycling stage is: where is the lighting carbon emissions during building operation, is the heating carbon emissions during building operation, is the cooling carbon emissions during building operation, is the water supply carbon emissions during building operation, is the carbon emissions of elevator operation during operation.

8. The method for measuring the carbon emissions of a station building based on life cycle analysis according to claim 1, wherein When calculating the carbon emissions in each stage, a data quality assessment is carried out on the collected activity level data and carbon emission factor data, and a data reliability assessment algorithm is adopted. The formula is: Among them represents the data reliability score is the weight of the th data is the th data value is the average value of the same type of data. When the data reliability score is lower than the set threshold, the data is corrected or supplemented.

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