CN116451306A - Carbon emission accounting method and system based on existing building energy-saving reconstruction and demolition stage - Google Patents
Carbon emission accounting method and system based on existing building energy-saving reconstruction and demolition stage Download PDFInfo
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Abstract
The invention relates to the technical field of carbon emission accounting, solves the technical problem of low carbon emission accounting precision, in particular to a carbon emission accounting method and system based on the existing building energy-saving reconstruction and demolition stage, comprising the following steps: acquiring basic data of an existing building from a geographic information system database; calling building information modeling software according to the basic data to generate a corresponding three-dimensional simulation building model; determining a special dismantling scheme of the existing building according to the building model; determining a target range of carbon emission accounting according to the carbon emission footprint of the existing building in the demolition stage; determining carbon source data of each stage in a carbon emission accounting target range according to the basic data, the dismantling special scheme and the recovery data of the building recovery enterprise; and calling a corresponding carbon emission quantification model according to the carbon source data to calculate the carbon emission of each stage and aggregate the total carbon emission of the building demolition stage. The invention improves the integrity and accuracy of the calculation of the carbon emission in the energy-saving reconstruction and demolition stages of the existing building.
Description
Technical Field
The invention relates to the technical field of carbon emission accounting, in particular to a carbon emission accounting method and system based on an existing building energy-saving reconstruction and demolition stage.
Background
The building industry is taken as a high energy consumption industry, and a large amount of energy is consumed in the whole life cycle from manufacturing to stopping, so that energy saving transformation of the existing building is an important content of urban updating from the aspects of saving resources, reducing pollution of carbon emission to the environment and the like, but the research of accounting the carbon emission in the building dismantling stage still needs to be enhanced to actively cope with the global climate change problem.
Aiming at the problem of accounting carbon emission in the energy-saving reconstruction demolishing stage of the existing building, the patent with the application number of 201811084710.1 is searched, a blasting demolishing carbon emission calculating method and system are disclosed, and the carbon emission of the blasting demolishing engineering of the building is calculated according to the functional unit, the target range and the corresponding carbon emission factor in the determined target range of the carbon emission calculation, wherein the target range comprises the blasting material manufacturing stage, the blasting material, the equipment transportation stage and the blasting demolishing stage, but the method does not account for the carbon emission reduction amount generated by recycling demolishing building materials by a waste building material recycling and regenerating enterprise, so that the carbon emission calculation precision is lower, in addition, the original design data can not be queried for the existing building with earlier construction time, only on-site measurement can be carried out, the time consumption is too long and the error is larger, the prediction of the yield of the building demolishing waste is inaccurate, the carbon emission accounting is further caused, and the carbon emission accounting is inaccurate, and the method can not be applied to the energy-saving reconstruction of the existing building.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a carbon emission accounting method and a system based on the existing building energy-saving reconstruction demolition stage, solves the technical problem of low carbon emission accounting precision, and achieves the aims of improving the integrity and accuracy of the carbon emission accounting of the existing building energy-saving reconstruction demolition stage by accurately predicting the total amount of building demolition waste according to the recycling rate of waste building material recycling enterprises.
In order to solve the technical problems, the invention provides the following technical scheme: a carbon emission accounting method based on the energy-saving reconstruction and demolition stages of existing buildings comprises the following steps:
obtaining basic data of an existing building from a geographic information system database, wherein the basic data comprises building names, building heights, occupied areas, geographic coordinates and structure types;
calling building information modeling software according to the basic data to generate a corresponding three-dimensional simulation building model;
determining a dismantling special scheme of the existing building according to the three-dimensional simulation building model;
according to the carbon emission footprint of the existing building energy-saving reconstruction demolition stage, determining a target range of carbon emission accounting as a building demolition stage, a demolition building material transportation stage and a demolition building material recovery stage;
determining carbon source data of each stage in a carbon emission accounting target range according to the basic data, the dismantling special scheme and the recovery data of a building recovery enterprise;
and calling a corresponding carbon emission quantification model according to the carbon source data to calculate the carbon emission of each stage and summing the total carbon emission of the building demolition stage.
Further, the specific process of determining the special demolition scheme of the existing building according to the three-dimensional simulation building model comprises the following steps:
determining the internal force distribution condition of the existing building structure according to the three-dimensional simulation building model;
and determining the dismantling principle of the existing building according to the internal force distribution condition of the existing building structure and forming a corresponding dismantling special scheme.
Further, the specific process of determining the carbon source data of each stage in the carbon emission accounting target range according to the basic data, the demolition special scheme and the recovery data of the building recovery enterprise comprises the following steps:
obtaining the total building area of the to-be-dismantled area of the existing building according to the basic data;
according to the total building area of the to-be-dismantled area and the special dismantling scheme, determining the carbon source data of the building dismantling stage as the type and the number of mechanical shifts, the energy consumption of unit shifts and the carbon emission factor corresponding to the used energy;
adopting material flow analysis according to the total building area of the to-be-demolished area to determine the total amount of waste generated by demolishing the existing building;
determining that the carbon source data of the building material dismantling and transporting stage is the carbon emission factor corresponding to the distance, the transporting mode and the transporting mode of the waste building material recycling and regenerating enterprise nearest to the existing building according to the total amount of the waste and an online map service system;
and determining the carbon source data of the demolishing building material recovery stage as the recycling coefficient of the waste building material according to the utilization rate of the waste building material recovery and regeneration enterprises.
Further, the specific process of calculating the carbon emission amount of each stage according to the carbon source data and calling the corresponding carbon emission quantization model and summing up the total carbon emission amount of the building demolition stage comprises the following steps:
calling a carbon emission quantification model of the building dismantling stage according to the carbon source data of the building dismantling stage, and calculating to obtain the carbon emission of the building dismantling stage;
according to the carbon source data of the building material dismantling and transporting stage, calling a carbon emission quantification model of the building material transporting stage, and calculating to obtain the carbon emission of the building material dismantling and transporting stage;
calling a carbon emission quantification model of the building material recovery stage according to the carbon source data of the building material recovery stage, and calculating to obtain the carbon decrement of the building material recovery stage;
and determining the sum of the carbon emission of the building dismantling stage, the carbon emission of the building dismantling transportation stage and the carbon reduction of the building dismantling recovery stage as the total carbon emission of the existing building energy-saving reconstruction dismantling stage.
The invention also provides a technical scheme that: a system for implementing the above-described carbon emissions accounting method based on existing building energy conservation retrofit removal stages, comprising:
the basic data acquisition module is used for acquiring basic data of an existing building from the geographic information system database, wherein the basic data comprises a building name, a building height, a floor area, geographic coordinates and a structure type;
the building model construction module is used for calling building information modeling software according to the basic data to generate a corresponding three-dimensional simulation building model;
the demolition scheme determining module is used for determining a demolition special scheme of the existing building according to the three-dimensional simulation building model;
the target range determining module is used for determining the target range of carbon emission accounting as a building dismantling stage, a building dismantling material transportation stage and a building dismantling material recovery stage according to the carbon emission footprint of the existing building energy-saving reconstruction dismantling stage;
the carbon source data determining module is used for determining carbon source data of each stage in a carbon emission accounting target range according to the basic data, the dismantling special scheme and the recovery data of the building recovery enterprise;
and the carbon emission accounting module is used for calling a corresponding carbon emission quantification model according to the carbon source data to calculate the carbon emission of each stage and summing the total carbon emission of the building demolition stage.
By means of the technical scheme, the invention provides a carbon emission accounting method and system based on the existing building energy-saving reconstruction and demolition stage, and the carbon emission accounting method and system at least have the following beneficial effects:
1. according to the invention, the project quantitative amounts of the building dismantling stage and the building material dismantling transportation stage are determined according to the basic data of the existing building energy-saving reconstruction project and the regional quota of the building, and meanwhile, the recycling rate of the dismantling building material is determined according to the recycling data of the waste building material recycling and regenerating enterprises, so that the total carbon emission amount in the carbon accounting target range of the existing building dismantling stage is conveniently and accurately calculated, and the integrity and the accuracy of the carbon emission amount accounting of the existing building energy-saving reconstruction dismantling stage are improved.
2. According to the invention, the basic data of the existing building to be modified is extracted through the geographic information system database, the three-dimensional simulation building model is constructed, and the three-dimensional simulation building model is analyzed according to the material flow theory, so that the special removal scheme can be rapidly and accurately determined, the accurate prediction of the generation amount of the building removal waste is realized, and the transportation distance and mode of the building removal waste are determined by combining with the online map service system, so that the carbon emission accounting in the energy-saving modification removal stage of the existing building is more accurate, and the carbon emission accounting efficiency is also improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a flow chart of the carbon emission accounting method based on the existing building energy saving reconstruction demolition stage provided by the invention;
FIG. 2 is an exemplary diagram of a three-dimensional simulated building model based on a carbon emission accounting method at a demolition stage of an existing building energy saving transformation provided by the present invention;
FIG. 3 is a diagram of an exemplary process for the target range of the carbon emissions accounting method based on the existing building energy conservation retrofit removal stage provided by the present invention;
FIG. 4 is an exemplary graph of carbon emissions at various stages of the carbon emissions accounting method provided by the present invention based on existing building energy conservation retrofit removal stages;
fig. 5 is a schematic diagram of a carbon emission accounting system based on the existing building energy saving modification removal stage provided by the invention.
In the figure: 10. a basic data acquisition module; 20. a building model construction module; 30. removing the scheme determining module; 40. a target range determination module; 50. a carbon source data determining module; 60. and a carbon emission accounting module.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. Therefore, the implementation process of how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in a method of implementing an embodiment described above may be implemented by a program to instruct related hardware, and thus the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Summary of the application
According to the unique standard of building carbon emission calculation, GB/T51366-2019, energy-saving reconstruction of the existing building is one of effective ways of saving resources and reducing environmental pollution caused by carbon emission, wherein the recovery utilization amount of the building material after the building material is dismantled is about 70% of the carbon emission amount of the energy-saving reconstruction building, which is an important carbon reduction measure, but the existing carbon emission accounting method does not realize accurate accounting of the recovered carbon reduction of the dismantled building material.
Examples
Referring to fig. 1-4, a specific implementation manner of the embodiment is shown, and the embodiment determines the recycling rate of demolishing building materials according to recycling data of a recycling enterprise of waste building materials, so as to implement accurate accounting of demolishing building materials recycling carbon decrement, thereby improving the integrity and accuracy of carbon emission accounting in the existing building energy-saving reconstruction demolishing stage, and improving the efficiency of carbon emission accounting by combining a geographic information system database and an online map service system.
As shown in fig. 1, a carbon emission accounting method based on the existing building energy-saving reconstruction demolition stage includes the following steps:
s1, acquiring basic data of an existing building from a geographic information system database, wherein the basic data comprises building names, building heights, occupied areas, geographic coordinates and structure types.
In this embodiment, the related geographic information system database performs auxiliary analysis by using big data mining, satellite map, and the like, and obtains building basic data in batches, including: building attribute information such as building name, building height, floor area, geographic coordinates, and structure type.
S2, building information modeling software is called according to the basic data to generate a corresponding three-dimensional simulation building model.
Basic data of the existing building to be modified is input into a building information modeling software environment, and a corresponding three-dimensional simulation building model can be automatically generated.
S3, determining a special dismantling scheme of the existing building according to the three-dimensional simulation building model.
Firstly, determining the internal force distribution condition of the existing building structure, the conditions of water electricity, equipment pipelines and the like according to a three-dimensional simulation building model; then, according to the internal force distribution condition of the existing building structure to be dismantled, the dismantling principle of the existing building is determined, a corresponding special dismantling scheme is formed, the construction is orderly ensured according to the principle that the internal force is smaller and then larger from top to bottom in a layer-by-layer segmentation mode, meanwhile, maintenance is carried out around the dismantling area, the dismantling operation cannot exceed the range, and the construction safety is ensured.
S4, determining a target range of carbon emission accounting as a building dismantling stage, a building dismantling transportation stage and a building dismantling recovery stage according to the carbon emission footprint of the existing building energy-saving reconstruction dismantling stage.
And S5, determining carbon source data of each stage in the carbon emission accounting target range according to the basic data and the dismantling special scheme.
According to the building height and the occupied area in the basic data, the total building area of the to-be-demolished area of the existing building can be obtained, and then according to the total building area of the to-be-demolished area and a demolition special scheme, the carbon source data in the demolishment stage of the building are determined to be the types and the numbers of mechanical shifts, the energy consumption of unit shifts and the carbon emission factors corresponding to the used energy sources;
adopting material flow analysis according to the total building area of the to-be-demolished area to determine the total amount of waste generated by demolishing the existing building; determining the carbon source data of the building material dismantling transportation stage as the carbon emission factors corresponding to the distance, the transportation mode and the transportation mode of the waste building material recycling enterprises closest to the existing building according to the total amount of waste and an online map service system; notably, the construction demolition waste referred to in this application refers to the sum of construction waste and other waste generated in demolition stages divided according to the life cycle of the construction, and is mainly affected by the total area of the construction and the amount of waste produced per unit area;
and determining the carbon source data of the building material recovery stage to be the recycling coefficient of the waste building material according to the recovery data of the waste building material recovery and regeneration enterprises.
S6, calling a corresponding carbon emission quantification model according to the carbon source data to calculate the carbon emission of each stage and summing up the total carbon emission of the building demolition stage.
S61, calling a carbon emission quantification model of the building dismantling stage according to carbon source data of the building dismantling stage, and calculating to obtain carbon emission C of the building dismantling stage C The method comprises the following steps:
on the upper partIn (E) cc，i Indicating the total energy consumption of the ith machine in the building dismantling stage; EF (electric F) i A carbon emission factor representing an i-th energy source; n represents the number of mechanical energy types;
s62, calling a carbon emission quantification model of the building material transportation stage according to carbon source data of the building material transportation stage, and calculating to obtain the carbon emission Cy of the building material transportation stage, namely:
in the above, M j Indicating the total amount of j-th main demolishd building materials; d (D) j Representing the average transportation distance of the j-th demolished building materials; t (T) j A carbon emission factor representing a transport distance per unit weight in a j-th transport mode for building material removal; m represents the type of building material removed.
S63, calling a carbon emission quantification model of the building material recovery stage according to the carbon source data of the building material recovery stage, and calculating to obtain the carbon decrement C of the building material recovery stage H The method comprises the following steps:
in the above, M j Indicating the total amount of j-th main demolishd building materials; η (eta) j Representing the recycling coefficient of the j-th demolished building materials; f (F) j Representing the carbon emission factor of the existing building energy-saving reconstruction building materials;
wherein, demolish building materials recycle coefficient eta j The expression of (2) is:
wherein Q is j Indicating the total amount of j-th main demolishd building materials; q (Q) h Indicating the recovery amount of the j-th main demolition building material; b (B) k The utilization rate of the waste building material recycling enterprises is indicated.
S64, carbon emission C of building dismantling stage C Carbon emission C during the transport phase of demolishing building materials y And removing carbon reduction C at the building material recovery stage H The sum of the two is determined as the total carbon emission of the existing building energy-saving reconstruction and demolition stage;
in the embodiment, the functional unit carbon emission C of the energy-saving reconstruction and demolition stage of the existing building can be obtained according to the total building area of the existing building and the total carbon emission of the energy-saving reconstruction and demolition stage cc The method comprises the following steps:
C cc ＝(C c +C y -C H )/A
in the above formula: a represents the total building area of the existing building.
The steps of the above-described carbon emission accounting method based on the energy-saving reconstruction and demolition stage of the existing building will be fully described below taking the existing building as an example.
Firstly, obtaining basic data of an existing building to be dismantled from a geographic information system database, wherein the basic data comprise a span of old urban shed areas of villages and old urban shed areas, a building height of about 58 meters and a structure type of 18 floors of houses, and taking the occupied area of the building as the actual building area of each floor approximately and combining the floor numbers to obtain the total building area of 9822.75 square meters;
step two, building information modeling software is called according to the basic data to generate a corresponding three-dimensional simulation building model, as shown in fig. 2;
thirdly, determining a special dismantling scheme of the existing building according to the three-dimensional simulation building model;
fourth, as shown in fig. 3, according to the carbon emission footprint of the existing building energy-saving reconstruction demolition stage, determining the target range of carbon emission accounting as a building demolition stage, a demolition building material transportation stage and a demolition building material recovery stage;
fifthly, determining carbon source data of each stage in a target range according to the basic data and the dismantling special scheme, and calling a corresponding carbon emission quantization model to calculate the carbon emission of each stage;
(1) Accounting of carbon emissions in the existing building dismantling stage
According to the total building area of the area to be dismantled and the special scheme for dismantling, the carbon source data of the building dismantling stage are determined to be the types and the number of the mechanical shifts, the energy consumption of the unit shift and the carbon emission factors corresponding to the used energy, and the specific data are shown in the following table 1:
table 1 carbon Source data at the construction demolition stage
According to the carbon source data of the building dismantling stage, invoking a carbon emission quantification model, and calculating to obtain the carbon emission C of the mechanical bench of the building dismantling stage C The method comprises the following steps:
(2) Accounting of carbon emissions during transport of building materials during demolition of existing buildings
Adopting material flow analysis according to the total building area of the to-be-demolished area to determine the total amount of waste generated by demolishing the existing building; and determining that the carbon source data of the dismantling building material transportation stage is that the single-pass distance from the nearest waste building material recycling enterprises of the existing building is 10km according to the total amount of waste and an online map service system, and adopting a highway transportation mode and carbon emission factors corresponding to the transportation mode, wherein the specific data are shown in the following table 2:
table 2 carbon source data for demolition of the building Material transportation stage
According to the carbon source data of the building material dismantling and transporting stage, calling a carbon emission quantification model of the building material transporting stage, and calculating to obtain the carbon emission C of the building material dismantling and transporting stage y The method comprises the following steps:
(3) The carbon reduction accounting at the recovery stage of the building materials of the existing building is removed
Taking waste building materials such as concrete, steel, building blocks, doors and windows, PVC pipes and power cables generated in the existing building dismantling stage as research objects, and combining recovery data of a waste building material recovery and regeneration enterprise, determining carbon source data in the dismantling building material recovery stage as waste building material recovery utilization coefficients and carbon emission factors corresponding to the waste building materials, wherein the concrete data are shown in the following table 3:
TABLE 3 carbon Source data for demolish building Material recovery stage
Calling a carbon emission quantification model of the building material recovery stage according to the carbon source data of the building material recovery stage, and calculating to obtain the carbon decrement C of the building material recovery stage H The method comprises the following steps:
from the calculation results, the recovery of the waste building materials can reduce the carbon content by 286333.18kg CO 2 e。
Sixth, as shown in FIG. 4, the carbon emission C in the building dismantling stage is calculated C Carbon emission C during the transport phase of demolishing building materials y And removing carbon reduction C at the building material recovery stage H And, the total carbon emission amount of the existing building energy-saving reconstruction demolition stage is determined, and the specific data are shown in the following table 4:
TABLE 4 carbon emissions at various stages within the target range
As can be seen from the above Table 4, the total carbon emission of the existing building energy-saving reconstruction demolition stage is-1251924.02 kg CO 2 e。
It should be noted that the selection principle of the carbon emission factor in this embodiment is as follows:
1) Selecting emission factors, namely firstly selecting the latest local accounting data of the goods; secondly, selecting according to the annex of GB/T51366-2019 of the building carbon emission calculation Standard; the third missing emission factor can be selected in the literature; the fourth unavailable emission factor may be a raw material emission factor or simply calculated emission data based on the material composition.
2) The carbon emission factors in the building material production stage are selected from the data of GB/T51366-2019 annex D and Li Yueyan, chen Jing and 2019 of the building carbon emission calculation Standard.
3) The carbon emission factor in the construction transportation stage is selected from the E data of the annex E of GB/T51366-2019 of the construction carbon emission calculation Standard.
4) The carbon emission factors of the construction machinery in the building construction stage and the dismantling stage are selected from the data of the annex C of GB/T51366-2019 of the building carbon emission calculation Standard.
5) The national regional grid carbon emission factor is taken from the enterprise greenhouse gas emission accounting method and report guide power generation facility (revised edition 2021) and 0.5810kgCO 2 /KWh。
6) The carbon footprint of the assembled component selects 648kg CO of checking data of the existing building area golden wallboard 2 /m 3 。
According to the embodiment, the project quantitative amounts of the building dismantling stage and the building material dismantling transportation stage are determined according to the basic data of the existing building energy-saving reconstruction project and the building area quota, and meanwhile, the recycling rate of the dismantling building materials is determined according to the recycling data of the waste building material recycling and regenerating enterprises, so that the total carbon emission amount in the carbon accounting target range of the existing building dismantling stage can be accurately calculated, and the integrity and the accuracy of the carbon emission amount accounting of the existing building energy-saving reconstruction dismantling stage are improved.
Referring to fig. 5, the present embodiment further provides a system for implementing the above-mentioned carbon emission accounting method based on the existing building energy-saving reconstruction demolition stage, including:
a basic data acquisition module 10, configured to acquire basic data of an existing building from a geographic information system database, where the basic data includes building attribute information such as a building name, a building height, a floor area, a geographic coordinate, and a structure type;
the building model construction module 20 is used for calling building information modeling software according to the basic data to generate a corresponding three-dimensional simulation building model, so that the total building area of the building to be dismantled can be calculated quickly;
the demolition scheme determining module 30 is used for determining internal force distribution conditions according to the three-dimensional simulation building model and determining demolition special schemes of existing buildings according to the internal force distribution conditions;
a target range determining module 40, configured to determine, according to the carbon emission footprint of the existing building energy-saving reconstruction demolition stage, a target range for carbon emission accounting as a building demolition stage, a demolition building material transportation stage, and a demolition building material recovery stage;
the carbon source data determining module 50 is used for determining carbon source data of each stage in the carbon emission accounting target range according to the basic data and the dismantling special scheme;
and a carbon emission amount accounting module 60 for calculating the carbon emission amount of each stage and summing up the total carbon emission amount of the building demolition stage according to the carbon source data calling the corresponding carbon emission quantization model.
According to the embodiment, the basic data of the existing building to be modified is extracted through the geographic information system database, the three-dimensional simulation building model is constructed, the three-dimensional simulation building model is analyzed according to the material flow theory, the special scheme for removing the building is quickly and accurately determined, the accurate prediction of the production amount of the waste for removing the building is realized, the transportation distance and the mode of the waste for removing the building are determined by combining the online map service system, and therefore the carbon emission accounting at the energy-saving modification and removal stage of the existing building is more accurate, the carbon emission accounting efficiency is improved, and the practicability is enhanced.
The foregoing embodiments have been presented in a detail description of the invention, and are presented herein with a particular application to the understanding of the principles and embodiments of the invention, the foregoing embodiments being merely intended to facilitate an understanding of the method of the invention and its core concepts; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (9)
1. The carbon emission accounting method based on the existing building energy-saving reconstruction demolition stage is characterized by comprising the following steps of:
obtaining basic data of an existing building from a geographic information system database, wherein the basic data comprises building names, building heights, occupied areas, geographic coordinates and structure types;
calling building information modeling software according to the basic data to generate a corresponding three-dimensional simulation building model;
determining a dismantling special scheme of the existing building according to the three-dimensional simulation building model;
according to the carbon emission footprint of the existing building energy-saving reconstruction demolition stage, determining a target range of carbon emission accounting as a building demolition stage, a demolition building material transportation stage and a demolition building material recovery stage;
determining carbon source data of each stage in a carbon emission accounting target range according to the basic data, the dismantling special scheme and the recovery data of a building recovery enterprise;
and calling a corresponding carbon emission quantification model according to the carbon source data to calculate the carbon emission of each stage and summing the total carbon emission of the building demolition stage.
2. The carbon emission accounting method of claim 1, wherein the determining the demolition-specific scheme of the existing building from the three-dimensional simulated building model comprises:
determining the internal force distribution condition of the existing building structure according to the three-dimensional simulation building model;
and determining the dismantling principle of the existing building according to the internal force distribution condition of the existing building structure and forming a corresponding dismantling special scheme.
3. The carbon emission accounting method of claim 1, wherein the specific process of determining carbon source data of each stage within the carbon emission accounting target range according to the basic data, the demolition special scheme, and the recovery data of the construction recovery enterprise comprises:
obtaining the total building area of the to-be-dismantled area of the existing building according to the basic data;
according to the total building area of the to-be-dismantled area and the special dismantling scheme, determining the carbon source data of the building dismantling stage as the type and the number of mechanical shifts, the energy consumption of unit shifts and the carbon emission factor corresponding to the used energy;
adopting material flow analysis according to the total building area of the to-be-demolished area to determine the total amount of waste generated by demolishing the existing building;
determining that the carbon source data of the building material dismantling and transporting stage is the carbon emission factor corresponding to the distance, the transporting mode and the transporting mode of the waste building material recycling and regenerating enterprise nearest to the existing building according to the total amount of the waste and an online map service system;
and determining the carbon source data of the demolishing building material recovery stage as the recycling coefficient of the waste building material according to the utilization rate of the waste building material recovery and regeneration enterprises.
4. The carbon emission accounting method of claim 3, wherein the specific process of calculating the carbon emission amount of each stage and summing up the total carbon emission amount of the building demolition stage according to the carbon source data calling the corresponding carbon emission quantization model comprises:
according to the carbon source data of the building dismantling stage, calling a carbon emission quantification model of the dismantling stage, and calculating to obtain the carbon emission C of the building dismantling stage C ；
Calling a building material transportation step according to the carbon source data of the building material dismantling transportation stageCalculating the carbon emission quantification model of the section to obtain the carbon emission C of the demolition building material transportation stage y ；
According to the carbon source data of the demolishing building material recovery stage, calling a carbon emission quantification model of the building material recovery stage, and calculating to obtain the carbon decrement C of the demolishing building material recovery stage H ；
Carbon emission C in building dismantling stage C Carbon emission C during the transport phase of demolishing building materials y And removing carbon reduction C at the building material recovery stage H And, determining the total carbon emission amount of the existing building energy-saving reconstruction demolition stage.
5. The carbon emission accounting method as defined in claim 4, wherein the building dismantling stage has a carbon emission amount C C The expression of (2) is:
wherein E is cc, Indicating the total energy consumption of the ith machine in the building dismantling stage; EF (electric F) i A carbon emission factor representing an i-th energy source; n represents the number of mechanical energy types used.
6. The carbon emission accounting method as defined in claim 4, wherein said demolition building material transportation stage has carbon emission amount C y The expression of (2) is:
wherein M is j Indicating the total amount of j-th main demolishd building materials; d (D) j Representing the average transportation distance of the j-th demolished building materials; t (T) j A carbon emission factor representing a transport distance per unit weight in a j-th transport mode for building material removal; m represents the type of building material removed.
7. According to claimThe method for accounting for carbon emissions as defined in claim 4, wherein said building material removal recovery stage has a carbon reduction of C H The expression of (2) is:
wherein M is j Indicating the total amount of j-th main demolishd building materials; η (eta) j Representing the recycling coefficient of the j-th demolished building materials; f (F) j Represents the carbon emission factor of the existing building energy-saving reconstruction building materials.
8. The carbon emission accounting method of claim 7, wherein said demolition building material recycling coefficient η j The expression of (2) is:
wherein Q is j Indicating the total amount of j-th main demolishd building materials; q (Q) h Indicating the recovery amount of the j-th main demolition building material; b (B) k The utilization rate of the waste building material recycling enterprises is indicated.
9. A system for implementing the carbon emissions accounting method based on the existing building energy conservation transformation demolition phase of any one of the preceding claims 1-8, characterized by comprising:
the basic data acquisition module is used for acquiring basic data of an existing building from the geographic information system database, wherein the basic data comprises a building name, a building height, a floor area, geographic coordinates and a structure type;
the building model construction module is used for calling building information modeling software according to the basic data to generate a corresponding three-dimensional simulation building model;
the demolition scheme determining module is used for determining a demolition special scheme of the existing building according to the three-dimensional simulation building model;
the target range determining module is used for determining the target range of carbon emission accounting as a building dismantling stage, a building dismantling material transportation stage and a building dismantling material recovery stage according to the carbon emission footprint of the existing building energy-saving reconstruction dismantling stage;
the carbon source data determining module is used for determining carbon source data of each stage in a carbon emission accounting target range according to the basic data, the dismantling special scheme and the recovery data of the building recovery enterprise;
and the carbon emission accounting module is used for calling a corresponding carbon emission quantification model according to the carbon source data to calculate the carbon emission of each stage and summing the total carbon emission of the building demolition stage.
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| CN117172426A (en) * | 2023-11-01 | 2023-12-05 | 浙江东南设计集团有限公司 | Low-carbonization construction method, system and storage medium for urban and rural buildings |
| CN117874473A (en) * | 2024-03-12 | 2024-04-12 | 南昌大学 | Old building component inspection damage, demolition and carbon reduction optimization system for treatment of old building component inspection damage, demolition and carbon reduction optimization system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117172426A (en) * | 2023-11-01 | 2023-12-05 | 浙江东南设计集团有限公司 | Low-carbonization construction method, system and storage medium for urban and rural buildings |
| CN117874473A (en) * | 2024-03-12 | 2024-04-12 | 南昌大学 | Old building component inspection damage, demolition and carbon reduction optimization system for treatment of old building component inspection damage, demolition and carbon reduction optimization system |
| CN117874473B (en) * | 2024-03-12 | 2024-06-18 | 南昌大学 | Old building component inspection damage, demolition and carbon reduction optimization system for treatment of old building component inspection damage, demolition and carbon reduction optimization system |
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