CN116258389A - Carbon emission evaluation method and system in reinforced concrete segment production stage - Google Patents
Carbon emission evaluation method and system in reinforced concrete segment production stage Download PDFInfo
- Publication number
- CN116258389A CN116258389A CN202211603821.5A CN202211603821A CN116258389A CN 116258389 A CN116258389 A CN 116258389A CN 202211603821 A CN202211603821 A CN 202211603821A CN 116258389 A CN116258389 A CN 116258389A
- Authority
- CN
- China
- Prior art keywords
- evaluation
- carbon emission
- reinforced concrete
- production stage
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 185
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 169
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 167
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 90
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 87
- 239000004566 building material Substances 0.000 claims abstract description 55
- 238000004458 analytical method Methods 0.000 claims abstract description 37
- 238000010276 construction Methods 0.000 claims abstract description 37
- 238000004364 calculation method Methods 0.000 claims abstract description 35
- 238000013210 evaluation model Methods 0.000 claims abstract description 21
- 238000009417 prefabrication Methods 0.000 claims abstract description 14
- 230000009897 systematic effect Effects 0.000 claims abstract description 8
- 238000013500 data storage Methods 0.000 claims description 19
- 239000004567 concrete Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000012216 screening Methods 0.000 claims description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 7
- 239000001569 carbon dioxide Substances 0.000 claims description 7
- 238000005265 energy consumption Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012351 Integrated analysis Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000011158 quantitative evaluation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/80—Management or planning
- Y02P90/84—Greenhouse gas [GHG] management systems
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Entrepreneurship & Innovation (AREA)
- Strategic Management (AREA)
- Economics (AREA)
- Educational Administration (AREA)
- Life Sciences & Earth Sciences (AREA)
- Development Economics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Operations Research (AREA)
- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- Game Theory and Decision Science (AREA)
- Food Science & Technology (AREA)
- Marketing (AREA)
- Pathology (AREA)
- Quality & Reliability (AREA)
- Tourism & Hospitality (AREA)
- General Business, Economics & Management (AREA)
- Combustion & Propulsion (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a carbon emission evaluation method and a system in a reinforced concrete segment production stage, wherein the evaluation method comprises the following steps: s1, collecting related data of carbon emission accounting in a production stage of reinforced concrete segments of tunnel construction projects of various scales and types, classifying the related data according to a building material production stage, a building material transportation stage and a prefabrication forming stage, and constructing a carbon emission unified calculation model and an analysis evaluation model of the carbon emission set of the reinforced concrete segments; and S2, collecting evaluation index data of the tunnel construction project to be evaluated according to the characteristics of the tunnel construction projects of the same type and scale, and performing overall systematic evaluation of the carbon emission amount on the analysis and evaluation model by adopting the reinforced concrete segment carbon emission set in the step S1. The evaluation method is used for carrying out post-evaluation on the carbon emission of the completed project and low-carbon design reference of the new project, so as to dynamically and accurately evaluate the carbon emission level of the tunnel construction reinforced concrete pipe sheet in the production stage.
Description
Technical Field
The invention belongs to the technical field of carbon emission evaluation, and particularly relates to a carbon emission evaluation method and system in a reinforced concrete pipe sheet production stage.
Background
According to the data of China department of transportation, the business mileage of the national railway reaches 15 ten thousand km, wherein the business mileage of the high-speed railway reaches 4 ten thousand km; the double-line rate is 59.5%; the electrochemical rate is 73.3%; in the western regionRailway business mileage is 6.1 ten thousand km. National railway network density 156.7 km/ten thousand km 2 . The rapid development of the transportation industry brings about not only rapid economic growth but also the consequent environmental problems. Compared with the full life cycle building material production stage, the building material transportation stage and the construction stage of railway tunnel construction, the research finds that the carbon emission is maximum in the building material production stage, and the reinforced concrete pipe piece is the link with the maximum carbon emission in the building material production stage, so that the overall emission reduction is quite considerable.
In the prior art, the current carbon emission evaluation system is mainly used in the industry with higher carbon emission, the monomer emission reduction amount in the tunnel construction field is smaller, a set of scientific tunnel construction carbon emission evaluation method and system are lacked, only the carbon emission research for the reinforced concrete segment production stage is very little, although a small amount of carbon emission evaluation systems for the building field exist on the market, the appointed standards are different due to different quantitative evaluation standards and different scales, and a unified measurement index is difficult to be suitable for the tunnel construction field, so the carbon emission evaluation method and system for the reinforced concrete segment production stage are provided.
Disclosure of Invention
The invention aims to provide a carbon emission evaluation method and a system in a reinforced concrete pipe piece production stage, which are used for carrying out post-evaluation on carbon emission of completed projects and low-carbon design reference of new projects so as to dynamically and accurately evaluate the carbon emission level in the tunnel construction reinforced concrete pipe piece production stage.
The invention adopts the following technical scheme: the carbon emission evaluation method in the reinforced concrete segment production stage comprises the following steps:
s1, collecting related data of carbon emission accounting in a production stage of reinforced concrete segments of tunnel construction projects of various scales and types, classifying the related data according to a building material production stage, a building material transportation stage and a prefabrication forming stage, and constructing a carbon emission unified calculation model and an analysis evaluation model of the carbon emission set of the reinforced concrete segments;
for the unified calculation model of carbon emissionCalculating the carbon emission E of the building material production stage, the building material transportation stage and the prefabrication forming stage P 、E T and EC； wherein ：
the carbon emission of the building material production stage is obtained by the following formula:
wherein ：Qi The material consumption is the ith material consumption in the reinforced concrete segment production stage; f (F) i The carbon emission factor of the ith material in the reinforced concrete segment production stage; n is the building material type;
the carbon emission of the building material transportation stage is obtained by the following formula:
E T ＝E T，c +E T，j ；
wherein ：ET，c Carbon emissions generated during the transportation of concrete; e (E) T，j Carbon emissions generated during transportation of building materials excluding concrete; m is M c The consumption of the concrete with the i-th strength grade; w is the capacity of the concrete tank truck; q (Q) c Diesel consumption per kilometer of the concrete tank truck; d (D) c The concrete transportation distance is; f (F) c Is a diesel carbon emission factor; m is M z，j The weight of the j-th building material; d (D) j The transportation distance of the j-th building material; f (F) j Is the transportation mode carbon emission factor of the j-th building material of the transportation unit weight.
The carbon emission in the pre-forming stage is obtained by the following formula:
wherein ：Qt The consumption of the reinforced concrete pipe piece; e (E) t The energy consumption is the energy consumption for producing the reinforced concrete pipe piece in unit volume; f (F) t Is an energy carbon emission factor;
and S2, collecting evaluation index data of the tunnel construction project to be evaluated according to the characteristics of the tunnel construction projects of the same type and scale, and performing overall systematic evaluation of the carbon emission amount on the analysis and evaluation model by adopting the reinforced concrete segment carbon emission set in the step S1.
The step S2 further includes: workshop CO for collecting reinforced concrete segment production stage of tunnel construction project to be evaluated 2 Concentration, and CO is allowed by workshop 2 The concentration value sets a threshold value, at CO 2 And when the concentration is higher than the set threshold value, the buzzer alarms.
The step S1 also includes qualitative index data, and the evaluation criteria are used to evaluate the qualitative index data at (0, 5).
In the step S1, an analytical evaluation model of the reinforced concrete segment carbon emission set is constructed as follows:
constructing an evaluation index system: a is that n ＝{x n }＝{x 1 ，x 2 ，…，x n }；
Calculating the carbon emission of each evaluation object in the building material production stage, the building material transportation stage and the prefabrication molding stage by using a carbon emission unified calculation model, and positioning the carbon emission as a qualitative index;
the quantitative index in the evaluation indexes is used for classifying the evaluation grades, and the evaluation grade standard B l = [ very small, generally large, very large]；
The reinforced concrete segment carbon emission set is analyzed and evaluated into a model: h= (a) n ，B l )；
The formula of the relation degree between the reinforced concrete pipe piece carbon emission set centering collection A, B is as follows:
wherein: k is the number of differential components, b 1 ，b 2 ，...b k I as a difference component 1 ，i 2 ，...i k A+b is the difference component coefficient 1 +b 2 +…+b k +c＝1；
a=s/N is the same degree, b=f/N is the degree of difference, c=p/N is the degree of opposition; i is a difference coefficient, and the value interval is (-1, 1); j is a opponent identification coefficient, and j= -1 in calculation;
calculating the comprehensive association degree of each evaluation object by combining the calculated association degree and the entropy weight of each evaluation index:
wherein ：ωk The kth evaluation index weight is determined by adopting an entropy weight method;
judging the level of the evaluation object by adopting a confidence coefficient criterion:
h l ＝(f 1 +f 2 +…+f l )＞λ；
wherein ,
lambda is the confidence;
for a given lambda value, if h l > lambda and h l-1 And if lambda is less than or equal to lambda, the evaluation object is the I-grade carbon emission effect.
The above qualitative index evaluation grade criteria were rated as follows:
the invention discloses a carbon emission evaluation system in a reinforced concrete pipe piece production stage, which is used for evaluating carbon emission in the reinforced concrete pipe piece production stage and comprises the following steps: the system comprises a data acquisition module, a data storage module, a data classification module, a carbon emission calculation module, an analysis and evaluation module and a data display module; wherein:
the output end of the data acquisition module is connected with the input end of the data storage module, the output end of the data storage module is connected with the input end of the data classification module, the output end of the data classification module is connected with the input end of the carbon emission calculation module, the output end of the carbon emission calculation module is simultaneously connected with the input ends of the analysis evaluation module, the data storage module and the display module, and the output end of the analysis evaluation module is simultaneously connected with the input ends of the display module and the data storage module;
the data acquisition module is used for acquiring data related to carbon emission accounting in the reinforced concrete segment production stage, data related to tunnel construction projects of various scales and types, data related to carbon emission evaluation indexes and workshop CO in the reinforced concrete segment production stage 2 Concentration standard;
the carbon emission calculation module is used for calculating the carbon emission of the reinforced concrete segment in the production stage through a carbon emission unified calculation model;
the data storage module is used for storing the data acquired by the data acquisition module and the carbon emission calculated by the carbon emission calculation module in the reinforced concrete segment production stage;
the data classification module is used for dividing the related data of the carbon emission accounting in the reinforced concrete segment production stage according to the target range of the carbon emission accounting in the reinforced concrete segment production stage;
and the analysis and evaluation module is used for regional detailed evaluation and overall systematic evaluation in the building material production stage.
Further, the analysis evaluation module includes: CO 2 The system comprises a concentration detector, an evaluation index screening unit, an evaluation system construction unit, an evaluation grade determining unit, a weight determining unit and an integrated analysis evaluation model unit;
CO 2 the concentration detector is used for displaying the actual carbon dioxide concentration value detected currently, and when the carbon dioxide concentration value is higher than a set threshold value, the buzzer alarms, otherwise, the buzzer does not alarm;
the evaluation index screening unit is used for screening the evaluation index and sending the evaluation index to the evaluation system construction unit;
the evaluation system construction unit is used for constructing a carbon emission evaluation index system in the reinforced concrete segment production stage;
and the evaluation grade determining unit is used for determining an evaluation index set and an evaluation grade set of the pair analysis according to the evaluation index system and the evaluation grade standard. The method comprises the steps of carrying out a first treatment on the surface of the
The weight determining unit is used for assigning weights through an entropy weight method;
and constructing an evaluation model unit, wherein the evaluation model unit is used for evaluating an index set and an evaluation grade set of the analysis according to the evaluation index system and the evaluation grade standard determination set.
The beneficial effects of the invention are as follows: 1. the method comprises the steps of collecting tunnel construction projects of various types and scales, screening evaluation indexes according to characteristics of newly built projects, constructing an evaluation index system, constructing a carbon emission set, analyzing and evaluating model, intuitively reflecting carbon emission conditions of the investigated projects, and reducing influence of human factors on carbon emission evaluation results, so that carbon emission evaluation in the reinforced concrete segment production stage is better carried out. 2. The target range of carbon emission calculation in the reinforced concrete segment production stage is divided into a building material production stage, a building material transportation stage and a prefabrication molding stage, and the evaluation content is more comprehensive. 3. The analysis evaluation module comprises regional detailed evaluation and overall system evaluation of an analysis evaluation model, and sends an evaluation result to the display module, so that the evaluation level is richer through the combined evaluation of the regional detailed evaluation and the overall system evaluation of the analysis evaluation model.
Drawings
FIG. 1 is a block diagram of a carbon emission evaluation system in the production stage of reinforced concrete segments according to the invention;
FIG. 2 is a block diagram of an analysis and evaluation module of a reinforced concrete segment production stage carbon emission evaluation system according to the present invention;
wherein: 6. a data acquisition module; 7. a data storage module; 8. a data classification module; 9. a carbon emission calculation module; 10. an analysis and evaluation module; 11. a data display module; CO 2 A concentration detector; 102. an evaluation index screening unit; 103. an evaluation system construction unit; 104. an evaluation level determination unit; 105. a weight determining unit; 106. the set analyzes and evaluates the model unit.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention relates to a carbon emission evaluation method in a reinforced concrete segment production stage, which comprises the following steps:
s1, collecting related data of carbon emission accounting in a production stage of reinforced concrete segments of tunnel construction projects of various scales and types, classifying the related data according to a building material production stage, a building material transportation stage and a prefabrication forming stage, and constructing a carbon emission unified calculation model and an analysis evaluation model of the carbon emission set of the reinforced concrete segments;
the carbon emission unified calculation model is used for calculating the carbon emission E of the building material production stage, the building material transportation stage and the prefabrication forming stage P 、E T and EC； wherein ：
the carbon emission of the building material production stage is obtained by the following formula:
wherein ：Qi The material consumption is the ith material consumption in the reinforced concrete segment production stage; f (F) i The carbon emission factor of the ith material in the reinforced concrete segment production stage; n is the building material type;
the carbon emission of the building material transportation stage is obtained by the following formula:
E T ＝E T，c +E T，j ；
wherein ：ET，c Carbon emissions generated during the transportation of concrete; e (E) T，j For building materials not comprising concreteCarbon emissions from the process; m is M c The consumption of the concrete with the i-th strength grade; w is the capacity of the concrete tank truck; q (Q) c Diesel consumption per kilometer of the concrete tank truck; d (D) c The concrete transportation distance is; f (F) c Is a diesel carbon emission factor; m is M z，j The weight of the j-th building material; d (D) j The transportation distance of the j-th building material; f (F) j Is the transportation mode carbon emission factor of the j-th building material of the transportation unit weight.
The carbon emission in the pre-forming stage is obtained by the following formula:
wherein ：Qt The consumption of the reinforced concrete pipe piece; e (E) t The energy consumption is the energy consumption for producing the reinforced concrete pipe piece in unit volume; f (F) t Is an energy carbon emission factor;
and S2, collecting evaluation index data of the tunnel construction project to be evaluated according to the characteristics of the tunnel construction projects of the same type and scale, and performing overall systematic evaluation of the carbon emission amount on the analysis and evaluation model by adopting the reinforced concrete segment carbon emission set in the step S1.
The step S2 further includes: workshop CO for collecting reinforced concrete segment production stage of tunnel construction project to be evaluated 2 Concentration, and CO is allowed by workshop 2 The concentration value sets a threshold value, at CO 2 And when the concentration is higher than a set threshold value, the buzzer alarms, and regional detailed evaluation is carried out on the reinforced concrete segment prefabrication workshop.
The step S1 also includes qualitative index data, and the evaluation criteria are used to evaluate the qualitative index data at (0, 5).
In the step S1, an analytical evaluation model of the reinforced concrete segment carbon emission set is constructed as follows:
constructing an evaluation index system: a is that n ＝{x n }＝{x 1 ，x 2 ，…，x n }；
The carbon emission unified calculation model is used for calculating the carbon emission of each evaluation object in the building material production stage, the building material transportation stage and the prefabrication molding stage, and the carbon emission total amount index has no mandatory regulation of related quota data and indexes, so that the carbon emission total amount index can be positioned as a qualitative index for evaluation, and the embodiment only records the actual carbon emission amount;
the quantitative index in the evaluation index classifies the evaluation grade according to the standard, and the evaluation grade standard B l = [ very small, generally large, very large]；
The reinforced concrete segment carbon emission set is analyzed and evaluated into a model: h= (a) n ，B l )；
The formula of the relation degree between the reinforced concrete pipe piece carbon emission set centering collection A, B is as follows:
wherein: k is the number of differential components, b ， ，b 2 ，...b k I as a difference component 1 ，i 2 ，...i k A+b is the difference component coefficient 1 +b 2 +…+b k +c＝1；
a=s/N is the same degree, b=f/N is the degree of difference, c=p/N is the degree of opposition; i is a difference coefficient, and the value interval is (-1, 1); j is a opponent identification coefficient, and j= -1 in calculation;
calculating the comprehensive association degree of each evaluation object by combining the calculated association degree and the entropy weight of each evaluation index:
wherein ：ωk The kth evaluation index weight is determined by adopting an entropy weight method;
judging the level of the evaluation object by adopting a confidence coefficient criterion:
h l ＝(f 1 +f 2 +…+f l )＞λ；
wherein ,
lambda is the confidence;
for a given lambda value, if h l > lambda and h l-1 And if lambda is less than or equal to lambda, the evaluation object is the I-grade carbon emission effect.
The above evaluation level criteria were rated as follows:
table 1 qualitative rating scale and rating scale
The invention also discloses a carbon emission evaluation system for the reinforced concrete pipe piece production stage, which is used for evaluating the carbon emission of the reinforced concrete pipe piece production stage, and as shown in figure 1, comprises the following steps: the system comprises a data acquisition module 6, a data storage module 7, a data classification module 8, a carbon emission calculation module 9, an analysis and evaluation module 10 and a data display module 11; wherein:
the output end of the data acquisition module 6 is connected with the input end of the data storage module 7, the output end of the data storage module 7 is connected with the input end of the data classification module 8, the output end of the data classification module 8 is connected with the input end of the carbon emission calculation module 9, the output end of the carbon emission calculation module 9 is simultaneously connected with the input ends of the analysis and evaluation module 10, the data storage module 7 and the display module 11, and the output end of the analysis and evaluation module 10 is simultaneously connected with the input ends of the display module 11 and the data storage module 7;
the data acquisition module 6 is used for acquiring data related to carbon emission accounting in the reinforced concrete segment production stage, data related to tunnel construction projects of various scales and types, data related to carbon emission evaluation indexes, and workshop CO in the reinforced concrete segment production stage 2 Concentration standard;
the carbon emission calculation module 9 is used for calculating the carbon emission of the reinforced concrete segment in the production stage through a carbon emission unified calculation model;
the data storage module 7 is used for storing the data acquired by the data acquisition module 6 and the carbon emission amount calculated by the carbon emission calculation module 9 in the reinforced concrete segment production stage;
the data classification module 8 is used for dividing the related data of the carbon emission accounting in the reinforced concrete segment production stage according to the target range of the carbon emission accounting in the reinforced concrete segment production stage;
the analysis and evaluation module 10 is used for regional detailed evaluation and overall systematic evaluation in the building material production stage.
As shown in fig. 2, the analysis evaluation module 10 includes: CO 2 A concentration detector 101, an evaluation index screening unit 102, an evaluation system construction unit 103, an evaluation level determination unit 104, a weight determination unit 105, and an aggregate analysis evaluation model unit 106;
CO 2 the concentration detector 101 is used for displaying the actual carbon dioxide concentration value detected currently, and when the carbon dioxide concentration value is higher than a set threshold value, the buzzer alarms, otherwise, the buzzer does not alarm; the highest allowable concentration of the workshop air carbon dioxide sanitary standard is 18000mg/m310000pm or 1%, and when the workshop concentration exceeds the threshold value, the buzzer alarms;
an evaluation index screening unit 102, configured to screen an evaluation index and send the evaluation index to an evaluation system construction unit 103;
an evaluation system construction unit 103 for constructing a carbon emission evaluation index system in the reinforced concrete segment production stage;
the evaluation level determining unit 104 is configured to determine an evaluation index set and an evaluation level set for analysis according to the evaluation index system and the evaluation level standard. The method comprises the steps of carrying out a first treatment on the surface of the
A weight determining unit 105 for assigning weights by an entropy weight method;
and the evaluation model unit 106 is configured to construct an evaluation index set and an evaluation grade set for analysis according to the evaluation index system and the evaluation grade standard determination set.
In order to verify the carbon emission evaluation method in the reinforced concrete segment production stage, an evaluation index in the reinforced concrete segment production stage of a certain project is selected, and the carbon emission total systematic evaluation is carried out on an analysis evaluation model by adopting a reinforced concrete segment carbon emission set.
TABLE 2 evaluation index system for production stage of reinforced concrete segment of certain engineering
The index layer of the index system for evaluation in this embodiment is a partial quantitative index evaluation example, and does not represent the constitution of the index system in the whole production stage.
Obtaining carbon emission of each ring pipe slice production stage according to the carbon emission calculation model, wherein the carbon emission ratio of the building material production stage is higher than that of the building material transportation stage and higher than that of the prefabrication molding stage;
TABLE 3 carbon emissions per Ring production stage of reinforced concrete segment
| Carbon emission metering range | Carbon emission (kgCO) 2 Ring(s) |
| Stage of building Material production (E) P ) | 8543.124 |
| Building material transportation stage (E) T ) | 246.352 |
| Prefabrication forming stage (E) C ) | 143.543 |
。
The evaluation index set is as follows: a is that 7 ＝{x 7 The method comprises the steps of } = { waste slag utilization rate, physical material consumption reduction rate, flying dust height, material localization rate, building material transportation distance, energy comprehensive consumption reduction rate and turnover material utilization rate }; the set of rating levels is: b (B) 5 = { extremely small, generally large, extremely large };
calculating the analysis relation degree of each evaluation object set:
wherein S represents that S index values in the evaluation object are in the I-level standard (extremely small), F 1 ；F 2 ；F 3 The index values are respectively the evaluation index numbers with II, III, IV-level standard, and the P evaluation index values are in V-level standard (maximum);
then set pair h= (a) 7 ，B 5 ) The relationship between the sets A, B is formulated as follows:
the similarity of the set pair is expressed by the magnitude of the relation degree calculation result, and the carbon emission effect can be primarily judged;
according to the basic relation degree expression of two evaluation objects, namely a first tunnel and a second tunnel, preliminarily judging the carbon emission degree of each ring of reinforced concrete pipe piece, namely a second tunnel and a first tunnel;
analyzing by further collecting the relation degree between the specific actual measurement value of the evaluation index and the evaluation grading standard;
tunnel one:
u 1-1 ＝0+0i 1 +0.9333i 2 +0.0667i 3 +0j u 1-2 ＝0+0i 1 +0i 2 +0.0267i 3 +0.9733j；
u 1-3 ＝0+0.7143i 1 +0.2857i 2 +0i 3 +0j u 1-4 ＝0.52+0.48i 1 +0i 2 +0i 3 +0j；
u 1-5 ＝0.144+0.856i 1 +0i 2 +0i 3 +0j u 1-6 ＝0+0i 1 +0.8i 2 +0.2i 3 +0j；
u 1-7 ＝0+0.04i 1 +0.96i 2 +0i 3 +0j；
tunnel two:
u 2-1 ＝0+0.14i 1 +0.86i 2 +0i 3 +0j u 2-2 ＝0+0i 1 +0i 2 +0.4933i 3 +0.5067j；
u 2-3 ＝0+0i 1 +0.8571i 2 +0.1429i 3 +0j u 2-4 ＝1+0i 1 +0i 2 +0i 3 +0j；
u 2-5 ＝1+0i 1 +0i 2 +0i 3 +0j u 2-6 ＝1+0i 1 +0i 2 +0i 3 +0j；
u 2-7 ＝0+0i 1 +0.18i 2 +0.82i 3 +0j；
calculating the comprehensive association degree of each evaluation object by combining the calculated association degree and the entropy weight of each evaluation index;
then
wherein ：ωk The kth evaluation index weight is determined by adopting an entropy weight method;
table 4 index layer objective weights
| Evaluation index | F 11 | F 12 | F 13 | F 21 | F 22 | F 31 | F 32 |
| Entropy value | 0.2318 | 0.2535 | 0 | 0.7265 | 0.6727 | 0.2952 | 0.5991 |
| Entropy weight | 0.1820 | 0.1769 | 0.2369 | 0.0648 | 0.0775 | 0.1670 | 0.0950 |
Judging the level of the evaluation object by adopting a confidence coefficient criterion:
h l ＝(f 1 +f 2 +…+f l )＞λ，(l＝1，2，...，5)；
wherein ,
lambda is the confidence level and is usually in the range of [0.5,0.7 ]]；
For a given lambda value, if h l > lambda and h l-1 And if lambda is less than or equal to lambda, the evaluation object is the I-grade carbon emission effect.
The confidence coefficient lambda of the embodiment is 0.6, and the carbon emission evaluation grade of each evaluation sample can be obtained, so that the influence degree of the tunnel I on the carbon emission is general, and the influence degree of the tunnel II on the carbon emission is general.
Claims (6)
1. The carbon emission evaluation method for the reinforced concrete segment production stage is characterized by comprising the following steps of:
s1, collecting related data of carbon emission accounting in a production stage of reinforced concrete segments of tunnel construction projects of various scales and types, classifying the related data according to a building material production stage, a building material transportation stage and a prefabrication forming stage, and constructing a carbon emission unified calculation model and an analysis evaluation model of the carbon emission set of the reinforced concrete segments;
the carbon emission unified calculation model is used for calculating the carbon emission E of the building material production stage, the building material transportation stage and the prefabrication forming stage P 、E T and EC； wherein ：
the carbon emission of the building material production stage is obtained by the following formula:
wherein ：Qi The material consumption is the ith material consumption in the reinforced concrete segment production stage; f (F) i The carbon emission factor of the ith material in the reinforced concrete segment production stage; n is the building material type;
the carbon emission of the building material transportation stage is obtained by the following formula:
E T ＝E T，c +E T，j ；
wherein ：ET，c Carbon emissions generated during the transportation of concrete; e (E) T，j Carbon emissions generated during transportation of building materials excluding concrete; m is M c The consumption of the concrete with the i-th strength grade; w is the capacity of the concrete tank truck; q (Q) c Diesel consumption per kilometer of the concrete tank truck; d (D) c The concrete transportation distance is; f (F) c Is a diesel carbon emission factor; m is M z，j The weight of the j-th building material; d (D) j The transportation distance of the j-th building material; f (F) j Is the transportation mode carbon emission factor of the j-th building material of the transportation unit weight.
The carbon emission in the pre-forming stage is obtained by the following formula:
wherein ：Qt The consumption of the reinforced concrete pipe piece; e (E) t The energy consumption is the energy consumption for producing the reinforced concrete pipe piece in unit volume; f (F) t Is an energy carbon emission factor;
and S2, collecting evaluation index data of the tunnel construction project to be evaluated according to the characteristics of the tunnel construction projects of the same type and scale, and performing overall systematic evaluation of the carbon emission amount on the analysis and evaluation model by adopting the reinforced concrete segment carbon emission set in the step S1.
2. The method for evaluating carbon emission in the production stage of reinforced concrete pipe pieces according to claim 1, wherein the step S2 further comprises: workshop CO for collecting reinforced concrete segment production stage of tunnel construction project to be evaluated 2 Concentration, and CO is allowed by workshop 2 The concentration value sets a threshold value, at CO 2 And when the concentration is higher than the set threshold value, the buzzer alarms.
3. The method for evaluating carbon emission in the production stage of reinforced concrete segments according to claim 1, wherein the step S1 further comprises qualitative index data, and the qualitative index data is evaluated at (0, 5) by an evaluation criterion.
4. The method for evaluating carbon emission in a reinforced concrete segment production stage according to claim 3, wherein in the step S1, an analytical evaluation model of the reinforced concrete segment carbon emission set is constructed as follows:
constructing an evaluation index system: a is that n ＝{x n }＝{x 1 ，x 2 ，…，x n }；
Calculating the carbon emission of each evaluation object in the building material production stage, the building material transportation stage and the prefabrication molding stage by using a carbon emission unified calculation model, and positioning the carbon emission as a qualitative index;
the quantitative index in the evaluation indexes is used for classifying the evaluation grades, and the evaluation grade standard B l = [ very small, generally large, very large]；
The reinforced concrete segment carbon emission set is analyzed and evaluated into a model: h= (a) n ，B l )；
The formula of the relation degree between the reinforced concrete pipe piece carbon emission set centering collection A, B is as follows:
wherein: k is the number of differential components, b 1 ，b 2 ，...b k I as a difference component 1 ，i 2 ，...i k A+b is the difference component coefficient 1 +b 2 +…+b k +c＝1；
a=s/N is the same degree, b=f/N is the degree of difference, c=p/N is the degree of opposition; i is a difference coefficient, and the value interval is (-1, 1); j is a opponent identification coefficient, and j= -1 in calculation;
calculating the comprehensive association degree of each evaluation object by combining the calculated association degree and the entropy weight of each evaluation index:
wherein ：ωk The kth evaluation index weight is determined by adopting an entropy weight method;
judging the level of the evaluation object by adopting a confidence coefficient criterion:
h l ＝(f 1 +f 2 +…+f l )＞λ；
wherein ,
lambda is the confidence;
for a given lambda value, if h l > lambda and h l-1 And if lambda is less than or equal to lambda, the evaluation object is the I-grade carbon emission effect.
5. The carbon emission evaluation system for the reinforced concrete segment production stage is characterized by comprising the following components: the system comprises a data acquisition module (6), a data storage module (7), a data classification module (8), a carbon emission calculation module (9), an analysis and evaluation module (10) and a data display module (11); wherein:
the output end of the data acquisition module (6) is connected with the input end of the data storage module (7), the output end of the data storage module (7) is connected with the input end of the data classification module (8), the output end of the data classification module (8) is connected with the input end of the carbon emission calculation module (9), the output end of the carbon emission calculation module (9) is simultaneously connected with the input ends of the analysis evaluation module (10), the data storage module (7) and the display module (11), and the output end of the analysis evaluation module (10) is simultaneously connected with the input ends of the display module (11) and the data storage module (7);
the data acquisition module (6) is used for acquiring data related to carbon emission accounting in the reinforced concrete segment production stage, data related to tunnel construction projects of various scales and types, data related to carbon emission evaluation indexes and workshop CO in the reinforced concrete segment production stage 2 Concentration standard;
the carbon emission calculation module (9) is used for calculating the carbon emission of the reinforced concrete pipe piece in the production stage through a carbon emission unified calculation model;
the data storage module (7) is used for storing the data acquired by the data acquisition module (6) and the carbon emission calculated by the carbon emission calculation module (9) in the reinforced concrete segment production stage;
the data classification module (8) is used for dividing the related data of the carbon emission accounting in the reinforced concrete segment production stage according to the target range of the carbon emission accounting in the reinforced concrete segment production stage;
the analysis and evaluation module (10) is used for regional detailed evaluation and overall systematic evaluation in the building material production stage.
6. A reinforced concrete pipe piece production stage carbon emission evaluation system according to claim 5, wherein the analysis evaluation module (10) comprises: CO 2 A concentration detector (101), an evaluation index screening unit (102), an evaluation system construction unit (103), an evaluation grade determination unit (104), a weight determination unit (105) and an analysis evaluation model unit (106);
the CO 2 A concentration detector (101) for displaying the actual carbon dioxide concentration value detected currently, and when the carbon dioxide concentration value is higher than the set threshold value, the buzzer alarms, otherwise, the buzzer does not reportAlarming;
the evaluation index screening unit (102) is used for screening the evaluation index and sending the evaluation index to the evaluation system construction unit (103);
the evaluation system construction unit (103) is used for constructing a carbon emission evaluation index system in the reinforced concrete segment production stage;
the evaluation grade determining unit (104) is used for determining an analyzed evaluation index set and an evaluation grade set according to the evaluation index system and the evaluation grade standard. The method comprises the steps of carrying out a first treatment on the surface of the
The weight determining unit (105) is used for assigning weights through an entropy weight method;
the construction evaluation model unit (106) is used for determining an evaluation index set and an evaluation grade set of the analysis according to the evaluation index system and the evaluation grade standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211603821.5A CN116258389B (en) | 2022-12-13 | 2022-12-13 | Carbon emission evaluation method and system in reinforced concrete segment production stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211603821.5A CN116258389B (en) | 2022-12-13 | 2022-12-13 | Carbon emission evaluation method and system in reinforced concrete segment production stage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116258389A true CN116258389A (en) | 2023-06-13 |
| CN116258389B CN116258389B (en) | 2024-02-23 |
Family
ID=86683305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211603821.5A Active CN116258389B (en) | 2022-12-13 | 2022-12-13 | Carbon emission evaluation method and system in reinforced concrete segment production stage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116258389B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101130612B1 (en) * | 2011-08-04 | 2012-04-02 | 한양대학교 산학협력단 | Evaluation method of co2 emission and economic in life cycle of concrete |
| JP2012159892A (en) * | 2011-01-29 | 2012-08-23 | Kitaokagumi:Kk | Computing unit for carbon-dioxide emissions caused by use of concrete, computing method for carbon-dioxide emissions, computing program for carbon-dioxide emissions and computer-readable recording medium |
| KR20130130971A (en) * | 2012-05-23 | 2013-12-03 | 김종욱 | Considering the construction phase of a high-rise concrete buildings emissions of carbon dioxide development |
| CN105184652A (en) * | 2014-06-17 | 2015-12-23 | 金华市公路管理局 | Road engineering carbon emission analysis system |
| KR20160056643A (en) * | 2014-11-12 | 2016-05-20 | 김종욱 | Life cycle energy assessment system for saving energy by applying new renewable energy and method thereof |
| CN109002657A (en) * | 2018-09-05 | 2018-12-14 | 上海建工五建集团有限公司 | The carbon emission calculation method and system of precast concrete |
| KR20200127797A (en) * | 2019-05-03 | 2020-11-11 | 고려대학교 산학협력단 | Carbon emission calculation device for reinforced concrete framing work and carbon emission calculation method using the same |
| CN114637967A (en) * | 2022-04-06 | 2022-06-17 | 河北光太路桥工程集团有限公司 | Accounting method for carbon emission in whole process of asphalt concrete surface layer pavement |
| CN115271512A (en) * | 2022-08-10 | 2022-11-01 | 北京工业大学 | Uncertainty analysis method for carbon emission accounting of asphalt concrete surface layer pavement |
-
2022
- 2022-12-13 CN CN202211603821.5A patent/CN116258389B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012159892A (en) * | 2011-01-29 | 2012-08-23 | Kitaokagumi:Kk | Computing unit for carbon-dioxide emissions caused by use of concrete, computing method for carbon-dioxide emissions, computing program for carbon-dioxide emissions and computer-readable recording medium |
| KR101130612B1 (en) * | 2011-08-04 | 2012-04-02 | 한양대학교 산학협력단 | Evaluation method of co2 emission and economic in life cycle of concrete |
| KR20130130971A (en) * | 2012-05-23 | 2013-12-03 | 김종욱 | Considering the construction phase of a high-rise concrete buildings emissions of carbon dioxide development |
| CN105184652A (en) * | 2014-06-17 | 2015-12-23 | 金华市公路管理局 | Road engineering carbon emission analysis system |
| KR20160056643A (en) * | 2014-11-12 | 2016-05-20 | 김종욱 | Life cycle energy assessment system for saving energy by applying new renewable energy and method thereof |
| CN109002657A (en) * | 2018-09-05 | 2018-12-14 | 上海建工五建集团有限公司 | The carbon emission calculation method and system of precast concrete |
| KR20200127797A (en) * | 2019-05-03 | 2020-11-11 | 고려대학교 산학협력단 | Carbon emission calculation device for reinforced concrete framing work and carbon emission calculation method using the same |
| CN114637967A (en) * | 2022-04-06 | 2022-06-17 | 河北光太路桥工程集团有限公司 | Accounting method for carbon emission in whole process of asphalt concrete surface layer pavement |
| CN115271512A (en) * | 2022-08-10 | 2022-11-01 | 北京工业大学 | Uncertainty analysis method for carbon emission accounting of asphalt concrete surface layer pavement |
Non-Patent Citations (3)
| Title |
|---|
| 樊俊江;於林锋;: "再生混凝土的碳排放计算与分析", 粉煤灰, no. 04 * |
| 范永法;张健;: "预拌混凝土碳排放量的估算方法", 广东建材, no. 11 * |
| 陈舞: ""山岭隧道坍塌风险评价的熵权-集对分析模型及工程应用"", 《工程科学与技术》, pages 1 - 11 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116258389B (en) | 2024-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022206354A1 (en) | Carbon emission measurement and calculation method for process-level, working condition-level, and project-level highway construction activities | |
| CN105069537B (en) | A kind of construction method of combination type air Quality Prediction | |
| CN106682699B (en) | A kind of vehicle exhaust emission signature analysis processing method based on clustering | |
| CN113887908A (en) | Bridge risk assessment method considering subjective and objective cross fusion weight | |
| CN111489015A (en) | Atmosphere O based on multiple model comparison and optimization3Concentration prediction method | |
| CN112348264A (en) | Carbon steel corrosion rate prediction method based on random forest algorithm | |
| CN107358339A (en) | A kind of track quality state evaluating method based on big data | |
| CN107832910A (en) | A kind of method that evaluation path traffic characteristic influences on carbon monoxide emission concentration | |
| CN115907822A (en) | Load characteristic index relevance mining method considering region and economic influence | |
| CN116468282A (en) | Tunnel burst water risk level assessment method | |
| CN116258389B (en) | Carbon emission evaluation method and system in reinforced concrete segment production stage | |
| CN116415756B (en) | Urban virtual scene experience management system based on VR technology | |
| CN110867075B (en) | Method for evaluating influence of road speed meter on reaction behavior of driver under rainy condition | |
| CN111640294A (en) | Method for predicting passenger flow change of urban bus line under influence of newly-built subway line | |
| CN106203887A (en) | A kind of network of highways characteristic analysis method based on cross classification and device | |
| CN113570250B (en) | Multi-objective comprehensive evaluation method for full life cycle of transformer temperature measuring device | |
| CN115345846A (en) | Intelligent grading method and system for grain size of medium and low carbon steel | |
| CN113298148B (en) | Ecological environment evaluation-oriented unbalanced data resampling method | |
| CN115906669A (en) | Dense residual error network landslide susceptibility evaluation method considering negative sample selection strategy | |
| CN115600807A (en) | Method for evaluating railway passenger arrival check efficiency of public transportation operation | |
| CN115713184A (en) | Bus route operation service evaluation method | |
| CN114814092A (en) | IP index measuring method based on BP neural network | |
| CN107992454A (en) | Air quality grade prediction method based on online sequential regression | |
| CN115099481A (en) | Method for predicting traditional village cultural tourism development suitability based on spatial form openness | |
| CN108986554B (en) | Airspace sector crowding degree dynamic identification method based on fuzzy comprehensive judgment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |