Research on Carbon Emission Accounting for Highway Bridges in Lingnan Region

Under the double background of heavy highway construction task and great pressure of "double carbon" target, this paper utilizes bottom-up emission factor method, establishes material production and transportation, energy production and on-site combustion as the boundary of carbon emission, and takes pile foundation, bearing platforms, piers, cover girders, girders, guardrails as the minimum accounting unit, establishes carbon emission accounting model, and carries out bridge Carbon emission accounting. This paper relies on the Xiongxin Expressway Project to carry out carbon emission accounting for the construction period of 25m small box girder bridges, and obtains part of the empirical data to establish the length of the bridge, construction and installation costs, the number of bridge spans and carbon emissions. Since the bridges of Xiongxin project are designed according to the design standardization of Guangdong Province, the conclusion can be used as the empirical value of carbon emission of bridge construction in Guangdong Province, which can provide the idea of quick calculation of carbon emission during the construction period of bridges.