C+S September 2020 Vol. 6 Issue 9 (web)

Bridge Integrated Workflow

as the analytical bridge model, 2D drawings, and rebar detailing input. Bentley’s OpenBridge eliminates multiple data entry from different end-users from different disciplines and unifies the data in a single source of truth: the physical 3D model. This 3D model is a live model and can be updated to reflect any real-world bridge conditions as the bridge lifecycle progresses. As-built modifications, defects found dur- ing an inspection, or any rehabilitations performed on the bridge can be reflected in the 3D model, resulting in a digital twin of the bridge, ready to be analyzed, monitored, and evaluated as needed. An essential part of the bridge design is structural analysis. In the non-automated workflow, the physical 3D model created by drafters is completely independent of the analytical model created by bridge or structural engineers. This workflow not only causes the modeling ef- fort to be duplicated, but it also creates a disconnected process between

modeling and analysis. As a result, geometrical changes made in the physical model are not automatically reflected in the analytical model. Bentley’s OpenBridge establishes a unique relationship between the physical model and the analytic model, allowing users to seamlessly convert and simplify solid objects to analytical elements like nodes, shells, and beams. In this manner, OpenBridge provides a significant advantage to bridge owners and agencies, allowing them to easily con- vert their “live” 3D physical model to an analytical model for condi- tion evaluation at any time during the bridge’s lifecycle. OpenBridge utilizes powerful and well-known LEAP and RM Bridge applications for the analysis and design checks. Despite the increasing popularity of digital deliverables, 2D plan sheets continue to be the most commonly used method for bridge de- sign deliverables. The conventional production of 2D plans requires manual modifications for any changes that may occur with the bridge due to design computations, geometry, or site changes. All related ef- fects must be tracked, as well as changes made repeatedly across any 2D sheet. To expedite and automate this process, OpenBridge provides the ability to create 2D drawings directly from the 3D model, as well as full interoperability with reinforcing rebar detailing applications like Bentley’s ProConcrete. This unique approach provides the bridge industry with automated 2D plan sheet production and rebar detail- ing with a direct reference to the 3D model. There is also the option to generate rebar quantity calculations and automatic detection of rebar conflicts. Bridge Models Usage After the Design Process The 3D model is enriched with design information. Therefore, all the

BIM for All Project Phases

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september 2020

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