A STUDY ON THE SELECTION OF STRUCTURAL TYPE OF QUAY WALLS IN TERMS OF CO₂ EMISSIONS

Abstract

 In order to promote the decarbonization of port construction, it is important to consider CO₂ emissions at the design stage, but the CO₂-oriented design method has not yet been established. Although there are some reports to calculate the CO₂ emissions of port construction, there is no case to compare the CO₂ emissions of different structural types designed to meet the structural stability requirements under the same conditions.

 This paper is a feasibility study to deal with the trade-off relationship between cost and CO₂ emission of some structural types of quay walls. Firstly, three structural types were selected to meet the requirements under the same design conditions. Then, the construction costs and the CO₂ emissions were calculated to investigate the trade-off relationship between cost and CO₂ emission for the selected structural types with shadow carbon pricing. The results suggest that the structural type selected may vary depending on the decision indicator (mainly construction cost and CO₂ emissions) in the design.