Abstract
A number of bridge infrastructures are rising significantly due to economic expansion and growing numbers of railway and road infrastructures. Owing to the complexity of bridge design, traditional design methods always create tedious and time-consuming construction processes. In recent years, Building Information Modelling (BIM) has been developed rapidly to provide a faster solution to generate and process the integration of information in a shared environment. This paper aims to highlight an innovative 6D BIM approach for the lifecycle asset management of a bridge infrastructure by using Donggou Bridge as a case study. This paper adopts 6D modelling, incorporating 3D model information with time schedule, cost estimation, and carbon footprint analysis across the lifecycle of the bridge project. The results of this paper reveal that raw materials contribute the most embodied carbon emissions, and as the 6D BIM model was developed in the early stage of the lifecycle, stakeholders can collaborate within the BIM environment to enhance a more sustainable and cost-effective outcome in advance. This study also demonstrates the possibility of BIM applications to bridge infrastructure projects throughout the whole lifecycle. The 6D BIM can save time by transforming 2D information to 3D information and reducing errors during the pre-construction and construction stages through better visualisation for staff training. Moreover, 6D BIM can promote efficient asset and project management since it can be applied for various purposes simultaneously, such as sustainability, lifecycle asset management and maintenance, condition monitoring and real-time structural simulations. In addition, BIM can promote cooperation among working parties and improve visualisation of the project for various stakeholders.
Highlights
Today, increasing amounts of investments are made in infrastructure and real estate due to economic expansion, rising population, and rising numbers of railing infrastructure [1]
A 6D Building Information Modelling (BIM) model comprising the 3D model of the Donggou Bridge, the time schedule, cost schedule, and carbon footprint evaluation was generated
This study only proposed a primary approach to generating the lifecycle assessment (LCA) of a bridge project using 6D BIM methods
Summary
Today, increasing amounts of investments are made in infrastructure and real estate due to economic expansion, rising population, and rising numbers of railing infrastructure [1]. Completion of infrastructure projects, such as mega-bridges, requires significant raw materials and machinery, which will, in turn, create considerable volumes of greenhouse gas (GHG) emissions. Performing the lifecycle assessment of a building or an infrastructure requires the measurement of the carbon footprint and other environmental effects. According to the General Specifications for Design of Highway Bridges and Culverts (JTG D60-2015) [9] in China, the design service life span of such a bridge is 100 years. The frequent high volume of traffic and overloading of vehicles generate the assumption that the bridge would have a shorter lifecycle of 30 years. Since the bridge project was completed seven years ago and information on the specific time schedule was unavailable, the authors generated an estimated construction timeline based on previous experience on a similar length bridge project
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