CN111861247A - Building engineering construction scheme comparison and selection method based on carbon emission - Google Patents

Building engineering construction scheme comparison and selection method based on carbon emission Download PDF

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CN111861247A
CN111861247A CN202010736873.4A CN202010736873A CN111861247A CN 111861247 A CN111861247 A CN 111861247A CN 202010736873 A CN202010736873 A CN 202010736873A CN 111861247 A CN111861247 A CN 111861247A
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carbon emission
construction
construction scheme
carbon
functional
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李水生
王成武
桂欣远
单宏伟
韩亚新
陈彬彬
贾东
任烨军
肖初华
曾凯
孔松
陈淀
邓金婷
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China Construction Fifth Engineering Bureau Co Ltd
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Abstract

The invention relates to a construction project construction scheme comparison and selection method based on carbon emission, which comprises the following steps: step 1, listing more than two safe and feasible construction schemes; step 2, determining a carbon emission evaluation index of the construction scheme; step 3, constructing a construction scheme carbon emission evaluation model; step 4, calculating the carbon emission of each construction scheme according to the construction scheme carbon emission evaluation model; step 5, standardizing the carbon emission of the construction scheme according to a function unit to obtain a functional carbon footprint; and 6, comparing and sequencing the carbon emission and functional carbon footprint results obtained by calculation of each construction scheme, and determining the construction scheme with a small functional carbon footprint as the feasible construction scheme with the highest energy conservation and emission reduction. The invention calculates the functional carbon footprint by constructing the carbon emission evaluation model of the construction scheme of the building engineering, optimizes the construction scheme with small carbon emission, plays the roles of predicting and controlling carbon emission in advance and is beneficial to environmental protection.

Description

Building engineering construction scheme comparison and selection method based on carbon emission
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a carbon emission based construction project scheme comparison and selection method.
Background
In order to meet the requirements of people on travel and residence, infrastructure construction and house building production are carried out in various places in China. In 2018, the building area of the building industry during construction and completion is 1822429.2 ten thousand square meters, and the total value of the building industry reaches 235085.53 million yuan. According to statistics, the energy consumed by construction activities of the construction project in China accounts for about 30% of national energy consumption, and if the energy consumption of raw material production is calculated, the energy consumption related to buildings accounts for about 45% of national total energy consumption. With the rapid development of construction engineering, the contradiction of high pollution, high emission and the like is prominent. The building emission reduction is geometric emission reduction, and has great significance for realizing the goal that the total carbon dioxide emission of domestic production of the unit is reduced by 60-65% compared with 2005 in China to 2030.
At present, most of researches on evaluation and optimization of construction schemes are qualitative researches, and are evaluation systems established from the aspects of environmental protection, resource saving, cost control and the like, and no method for comparing and selecting construction schemes of building engineering based on carbon emission exists, but the optimization result of the prior construction scheme optimization method cannot guide energy conservation and emission reduction of the building industry.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a building engineering construction scheme comparing and selecting method based on carbon emission.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a building engineering construction scheme comparing and selecting method based on carbon emission comprises the following steps:
step 1, listing more than two safe and feasible construction schemes;
step 2, determining a carbon emission evaluation index of the construction scheme; the carbon emission evaluation index of the construction scheme is a functional carbon footprint, and the functional carbon footprint refers to the carbon emission of the construction scheme of a functional unit; selecting a unit building area as a functional unit for the whole construction project; for the construction scheme of the subsection project, selecting a measurement unit in a project amount list as a functional unit;
step 3, constructing a construction scheme carbon emission evaluation model; the construction scheme carbon emission evaluation model comprises a carbon source input amount calculated according to each construction scheme and the project amount list file, and a carbon emission factor database in each construction stage of the construction scheme;
step 4, calculating the carbon emission of each construction scheme according to the construction scheme carbon emission evaluation model, wherein the carbon emission of the construction scheme comprises the carbon emission E of the building material in transportation1And carbon emission amount E of machine construction2(ii) a Wherein the content of the first and second substances,
Figure RE-GDA0002629466200000021
mji＝qji×ADi，mjitraffic for building material j; djiAs construction materials jAverage transport distance of; c. CjiIs a transport carbon emission factor; q. q.sjiThe consumption quota of each measurement unit of building materials j is estimated for the construction project budget quota i; ADiA certain quota i for the construction project;
Figure RE-GDA0002629466200000022
Qibudgeting a quota for the building project i each metering unit mechanical carbon footprint; ADiThe number of i is rated for the construction; t isijThe consumption quota of each measurement unit construction machine j of the sub-group i of the budget quota for the building engineering; dijA bench carbon emission factor for construction machine j;
step 5, standardizing the carbon emission of the construction scheme according to a function unit to obtain a functional carbon footprint G; wherein the content of the first and second substances,
Figure RE-GDA0002629466200000023
a is a building carbon footprint functional unit;
and 6, comparing and sequencing the carbon emission and functional carbon footprint results obtained by calculation of each construction scheme, and determining the construction scheme with a small functional carbon footprint as the feasible construction scheme with the highest energy conservation and emission reduction.
In the above technical solution, the carbon emission factor database includes transportation carbon emission factors and desk-top carbon emission factors.
The method has the advantages that the functional carbon footprint is calculated by constructing the carbon emission evaluation model of the construction project construction scheme, the construction scheme with small carbon emission can be optimized, the engineering carbon footprint is calculated by using the engineering quantity list as the basis, the method is simple and easy to implement, the engineering quantity list can be compiled in the engineering bidding stage, the data is easy to obtain, the construction scheme is selected by comparing the carbon emission, the calculation is simple and convenient, the effects of predicting and controlling the carbon emission in advance are achieved, the greenhouse gas emission is reduced for the construction industry, and the environment is protected.
Drawings
FIG. 1 is a flow chart of the steps of the present invention.
FIG. 2 is a functional carbon footprint comparison of two construction scenarios in case.
Detailed Description
Embodiments of the present invention will be described with reference to the accompanying drawings.
A building engineering construction scheme comparing and selecting method based on carbon emission comprises the following steps:
step 1, listing more than two safe and feasible construction schemes;
step 2, determining a carbon emission evaluation index of the construction scheme; the carbon emission evaluation index of the construction scheme is a functional carbon footprint, and the functional carbon footprint refers to the carbon emission of the construction scheme of a functional unit; selecting a unit building area as a functional unit for the whole construction project; for the construction scheme of the subsection project, selecting a measurement unit in a project amount list as a functional unit;
step 3, constructing a construction scheme carbon emission evaluation model; the construction scheme carbon emission evaluation model comprises a carbon source input amount calculated according to each construction scheme and the project amount list file, and a carbon emission factor database in each construction stage of the construction scheme;
step 4, calculating the carbon emission of each construction scheme according to the construction scheme carbon emission evaluation model, wherein the carbon emission of the construction scheme comprises the carbon emission E of the building material in transportation1And carbon emission amount E of machine construction2(ii) a Wherein the content of the first and second substances,
Figure RE-GDA0002629466200000031
mji＝qji×ADi，mjitraffic for building material j; djiIs the average transport distance of building material j; c. CjiIs a transport carbon emission factor; q. q.sjiThe consumption quota of each measurement unit of building materials j is estimated for the construction project budget quota i; ADiA certain quota i for the construction project;
Figure RE-GDA0002629466200000032
Qibudgeting a quota for the building project i each metering unit mechanical carbon footprint; ADiRating the number of i for constructionAn amount; t isijThe consumption quota of each measurement unit construction machine j of the sub-group i of the budget quota for the building engineering; dijA bench carbon emission factor for construction machine j;
step 5, standardizing the carbon emission of the construction scheme according to a function unit to obtain a functional carbon footprint G; wherein the content of the first and second substances,
Figure RE-GDA0002629466200000033
a is a building carbon footprint functional unit;
and 6, comparing and sequencing the carbon emission and functional carbon footprint results obtained by calculation of each construction scheme, and determining the construction scheme with a small functional carbon footprint as the feasible construction scheme with the highest energy conservation and emission reduction.
Case (2): certain engineering building area 3535.4m2When foundation earth excavation is carried out, two construction machinery combination schemes are selected, and the list engineering quantity of earth engineering is 2800.96m3。
Step 1, listing more than two safe and feasible construction schemes;
according to the first construction scheme, a single-bucket excavator is selected for digging soil, the vehicle is directly loaded after the soil is dug, and a dump truck is selected for the rest of the machines without using the dump truck.
And in the second construction scheme, the earthwork is a self-propelled carry scraper, and the dump truck is abandoned for the rest earthwork.
Step 2: determining a construction scheme carbon emission evaluation index; for the construction scheme of the subsection project, units in the project amount list can be selected as functional units. Cubic meters are selected as functional units in earthwork.
Step 3, constructing a construction scheme carbon emission evaluation model; the carbon emission factor database includes transport carbon emission factors (as shown in table 1) and shift carbon emission factors (as shown in table 2).
And 4, calculating the carbon emission of each construction scheme according to the construction scheme carbon emission evaluation model.
And 5, standardizing the carbon emission of the construction scheme according to a function unit to obtain a functional carbon footprint G.
The carbon emission and functional carbon footprint of the first construction scheme are shown in table 3 below, and the carbon emission and functional carbon footprint of the second construction scheme are shown in table 4 below.
And 6, comparing and sequencing the carbon emission and functional carbon footprint results obtained by calculation of each construction scheme, and determining the construction scheme with a small functional carbon footprint as the feasible construction scheme with the highest energy conservation and emission reduction. As can be seen from the comparison of FIG. 2, the functional carbon footprint of the first construction scheme is less than the functional carbon footprint of the second construction scheme, and therefore the first construction scheme is selected as the optimal construction scheme.
The method calculates the functional carbon footprint by constructing the carbon emission evaluation model of the construction project construction scheme, can preferably select the construction scheme with small carbon emission, calculates the carbon footprint of the project according to the project amount list, is simple and easy to implement, can compile the project amount list in the project bid and tender stage, is easy to obtain data, selects the construction scheme by comparing the carbon emission, is simple and convenient to calculate, plays the roles of predicting in advance and controlling the carbon emission, and has important significance for reducing the greenhouse gas emission and protecting the environment in the construction industry.
TABLE 1 transport carbon emission factor
Figure RE-GDA0002629466200000041
TABLE 2 carbon emission factor of bench work for common construction machinery
Figure RE-GDA0002629466200000051
TABLE 3
Figure RE-GDA0002629466200000061
TABLE 4
Figure RE-GDA0002629466200000062
The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (2)

1. A building engineering construction scheme comparing and selecting method based on carbon emission is characterized by comprising the following steps:
step 1, listing more than two safe and feasible construction schemes;
step 2, determining a carbon emission evaluation index of the construction scheme; the carbon emission evaluation index of the construction scheme is a functional carbon footprint, and the functional carbon footprint refers to the carbon emission of the construction scheme of a functional unit; selecting a unit building area as a functional unit for the whole construction project; for the construction scheme of the subsection project, selecting a measurement unit in a project amount list as a functional unit;
step 3, constructing a construction scheme carbon emission evaluation model; the construction scheme carbon emission evaluation model comprises a carbon source input amount calculated according to each construction scheme and the project amount list file, and a carbon emission factor database in each construction stage of the construction scheme;
step 4, calculating the carbon emission of each construction scheme according to the construction scheme carbon emission evaluation model, wherein the carbon emission of the construction scheme comprises the carbon emission E of the building material in transportation1And carbon emission amount E of machine construction2(ii) a Wherein the content of the first and second substances,
Figure RE-FDA0002629466190000011
mji＝qji×ADi，mjitraffic for building material j; djiIs the average transport distance of building material j; c. CjiIs a transport carbon emission factor; q. q.sjiThe consumption quota of each measurement unit of building materials j is estimated for the construction project budget quota i; ADiA certain quota i for the construction project;
Figure RE-FDA0002629466190000012
Qibudgeting a quota for the building project i each metering unit mechanical carbon footprint; ADiThe number of i is rated for the construction; t isijThe consumption quota of each measurement unit construction machine j of the sub-group i of the budget quota for the building engineering; dijA bench carbon emission factor for construction machine j;
step 5, standardizing the carbon emission of the construction scheme according to a function unit to obtain a functional carbon footprint G; wherein the content of the first and second substances,
Figure RE-FDA0002629466190000013
a is a building carbon footprint functional unit;
and 6, comparing and sequencing the carbon emission and functional carbon footprint results obtained by calculation of each construction scheme, and determining the construction scheme with a small functional carbon footprint as the feasible construction scheme with the highest energy conservation and emission reduction.
2. The carbon emission-based architectural engineering project construction scheme selection method of claim 1, wherein the carbon emission factor database comprises transportation carbon emission factors and bench carbon emission factors.
CN202010736873.4A 2020-07-28 2020-07-28 Building engineering construction scheme comparison and selection method based on carbon emission Pending CN111861247A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112668802A (en) * 2021-01-05 2021-04-16 广东工业大学 Construction carbon emission prediction method based on design parameters
CN115841213A (en) * 2022-09-27 2023-03-24 广东工业大学 Management method for carbon emission reduction in whole road construction and maintenance process
CN116187584A (en) * 2023-04-19 2023-05-30 深圳大学 Building carbon footprint prediction method and system based on gradient descent algorithm
CN116485260A (en) * 2023-04-24 2023-07-25 中交第二公路勘察设计研究院有限公司 Highway engineering design scheme comparison and selection method considering carbon benefits
CN117314135A (en) * 2023-11-30 2023-12-29 中建海龙科技有限公司 BIM and Internet of things-based fabricated building carbon emission control method

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112668802A (en) * 2021-01-05 2021-04-16 广东工业大学 Construction carbon emission prediction method based on design parameters
CN112668802B (en) * 2021-01-05 2022-11-22 广东工业大学 Construction carbon emission prediction method based on design parameters
CN115841213A (en) * 2022-09-27 2023-03-24 广东工业大学 Management method for carbon emission reduction in whole road construction and maintenance process
CN116187584A (en) * 2023-04-19 2023-05-30 深圳大学 Building carbon footprint prediction method and system based on gradient descent algorithm
CN116187584B (en) * 2023-04-19 2023-09-05 深圳大学 Building carbon footprint prediction method and system based on gradient descent algorithm
CN116485260A (en) * 2023-04-24 2023-07-25 中交第二公路勘察设计研究院有限公司 Highway engineering design scheme comparison and selection method considering carbon benefits
CN117314135A (en) * 2023-11-30 2023-12-29 中建海龙科技有限公司 BIM and Internet of things-based fabricated building carbon emission control method
CN117314135B (en) * 2023-11-30 2024-03-26 中建海龙科技有限公司 BIM and Internet of things-based fabricated building carbon emission control method

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