Reducing Rebar Cutting Waste and Rebar Usage of Beams: A Two-Stage Optimization Algorithm
While various approaches have been developed to minimize rebar cutting waste, such as optimizing cutting patterns and the lap splice position, reducing rebar usage by minimizing the number of splices remains uninvestigated. In response to these issues, a two-stage optimization algorithm was develope...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
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| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/13/9/2279 |
| _version_ | 1797581001845637120 |
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| author | Daniel Darma Widjaja Sunkuk Kim |
| author_facet | Daniel Darma Widjaja Sunkuk Kim |
| author_sort | Daniel Darma Widjaja |
| collection | DOAJ |
| description | While various approaches have been developed to minimize rebar cutting waste, such as optimizing cutting patterns and the lap splice position, reducing rebar usage by minimizing the number of splices remains uninvestigated. In response to these issues, a two-stage optimization algorithm was developed that prioritizes the use of special-length rebar to achieve a near-zero rebar cutting waste (N0RCW) of less than 1%, while also reducing overall rebar usage. The two-stage algorithm first optimizes the lap splice position for continuous rebar considering the use of a special-length rebar, which reduces the number of splices required. It then integrates a special-length minimization algorithm to combine the additional rebar. The algorithm was applied to beam structures in a small-sized factory building project, and it resulted in a notable reduction of 29.624 tons of rebar, equivalent to 12.31% of the total purchased quantity. Greenhouse gas emissions were reduced by 102.68 tons, and associated costs decreased by USD 30,256. A rebar cutting waste of 0.93%, which is near zero, was achieved. These findings highlight the significant potential of the proposed algorithm for reducing rebar waste and facilitating sustainable construction practices. The algorithm is also applicable to other reinforced concrete projects, where the associated advantages will be amplified accordingly. |
| first_indexed | 2024-03-10T22:58:53Z |
| format | Article |
| id | doaj.art-ff08b224c13049bb93b55499c436f7c0 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T22:58:53Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-ff08b224c13049bb93b55499c436f7c02023-11-19T09:51:50ZengMDPI AGBuildings2075-53092023-09-01139227910.3390/buildings13092279Reducing Rebar Cutting Waste and Rebar Usage of Beams: A Two-Stage Optimization AlgorithmDaniel Darma Widjaja0Sunkuk Kim1Department of Architectural Engineering, Kyung Hee University, Yongin-si 17104, Republic of KoreaDepartment of Architectural Engineering, Kyung Hee University, Yongin-si 17104, Republic of KoreaWhile various approaches have been developed to minimize rebar cutting waste, such as optimizing cutting patterns and the lap splice position, reducing rebar usage by minimizing the number of splices remains uninvestigated. In response to these issues, a two-stage optimization algorithm was developed that prioritizes the use of special-length rebar to achieve a near-zero rebar cutting waste (N0RCW) of less than 1%, while also reducing overall rebar usage. The two-stage algorithm first optimizes the lap splice position for continuous rebar considering the use of a special-length rebar, which reduces the number of splices required. It then integrates a special-length minimization algorithm to combine the additional rebar. The algorithm was applied to beam structures in a small-sized factory building project, and it resulted in a notable reduction of 29.624 tons of rebar, equivalent to 12.31% of the total purchased quantity. Greenhouse gas emissions were reduced by 102.68 tons, and associated costs decreased by USD 30,256. A rebar cutting waste of 0.93%, which is near zero, was achieved. These findings highlight the significant potential of the proposed algorithm for reducing rebar waste and facilitating sustainable construction practices. The algorithm is also applicable to other reinforced concrete projects, where the associated advantages will be amplified accordingly.https://www.mdpi.com/2075-5309/13/9/2279rebar cutting wasterebar usagelap splicecutting patterntwo-stage algorithmoptimization |
| spellingShingle | Daniel Darma Widjaja Sunkuk Kim Reducing Rebar Cutting Waste and Rebar Usage of Beams: A Two-Stage Optimization Algorithm Buildings rebar cutting waste rebar usage lap splice cutting pattern two-stage algorithm optimization |
| title | Reducing Rebar Cutting Waste and Rebar Usage of Beams: A Two-Stage Optimization Algorithm |
| title_full | Reducing Rebar Cutting Waste and Rebar Usage of Beams: A Two-Stage Optimization Algorithm |
| title_fullStr | Reducing Rebar Cutting Waste and Rebar Usage of Beams: A Two-Stage Optimization Algorithm |
| title_full_unstemmed | Reducing Rebar Cutting Waste and Rebar Usage of Beams: A Two-Stage Optimization Algorithm |
| title_short | Reducing Rebar Cutting Waste and Rebar Usage of Beams: A Two-Stage Optimization Algorithm |
| title_sort | reducing rebar cutting waste and rebar usage of beams a two stage optimization algorithm |
| topic | rebar cutting waste rebar usage lap splice cutting pattern two-stage algorithm optimization |
| url | https://www.mdpi.com/2075-5309/13/9/2279 |
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