Research on Carbon Emissions from Urban Bridge Construction based on LCA

Qianqian Liang; Yexun Li; Laifa Wang; Wei Zhang; Wenxuan Duan

doi:10.2991/978-94-6239-682-1_2

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Research on Carbon Emissions from Urban Bridge Construction based on LCA

Authors

Qianqian Liang¹^{, 2}^{, *}, Yexun Li¹^{, 2}, Laifa Wang¹^{, 2}, Wei Zhang¹^{, 2}, Wenxuan Duan³

¹CCCC THIRD HARBOR ENGINEERING CO, Ltd, Shanghai, 200030, China

²Key Laboratory of Engineering Structures, CCCC Group, Shanghai, 200030, China

³CCCC THIRD AVIATION BUREAU NINTH ENGINEERING CO, Ltd, Chongqing, 400012, China

^*Corresponding author. Email: liang_qqian@163.com

Corresponding Author

Qianqian Liang

Available Online 30 June 2026.

DOI: 10.2991/978-94-6239-682-1_2 How to use a DOI?
Keywords: Urban bridges; Construction; Carbon emissions; LCA
Abstract: This study considered the unique complexity of urban bridge construction environments and established a carbon emissions model applicable to such activities. Based on the Life Cycle Assessment (LCA) method, the model divided the construction process into material production, transportation, and construction. The construction phase was further subdivided into multiple components. Application to a Shanghai urban bridge case study demonstrated that: (1) In the construction phase, the contribution of water usage was less than 1% to the carbon emissions in all sub-projects. This factor could be ignored to simplify the model. (2) From the perspective of carbon emission proportions, the material production phase was the primary emission source, accounting for over 90% in all sub-projects. The use of recycled materials had significant potential for reducing carbon emissions. (3) In terms of carbon emissions from sub-projects, the carbon emissions from main beam construction were significantly higher than those from main tower and cable construction, making it a key focus area for future carbon reduction efforts.
Copyright: © 2026 The Author(s)
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title: Proceedings of the 2025 7th International Conference on Civil Architecture and Urban Engineering (ICCAUE 2025)
Series: Atlantis Highlights in Engineering
Publication Date: 30 June 2026
ISBN: 978-94-6239-682-1
ISSN: 2589-4943
DOI: 10.2991/978-94-6239-682-1_2 How to use a DOI?
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

ris enw bib

TY  - CONF
AU  - Qianqian Liang
AU  - Yexun Li
AU  - Laifa Wang
AU  - Wei Zhang
AU  - Wenxuan Duan
PY  - 2026
DA  - 2026/06/30
TI  - Research on Carbon Emissions from Urban Bridge Construction based on LCA
BT  - Proceedings of the 2025 7th International Conference on Civil Architecture and Urban Engineering (ICCAUE 2025)
PB  - Atlantis Press
SP  - 4
EP  - 13
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6239-682-1_2
DO  - 10.2991/978-94-6239-682-1_2
ID  - Liang2026
ER  -

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