TWINGEO
CASE STUDY: BENTLEY SYSTEMS COLLABORATIVE BIM WORKFLOWS HELP LOWER COST OF THE ZHENGZHOU-XIXIA EXPRESSWAY PROJECT
T
he CNY 10.5 billion Yaoshan-Luanchuan section of the Zhengzhou-Xixia Expressway is 78.8-kilometers long and is a bi-directional and four-lane expressway, which includes 88 bridges, four interchanges, two interoperability hubs, and two super-long tunnels. The bridge and tunnel ratio is 59.8 percent of
Zhengzhou-Xixia Expressway project.. The project is critical for developing an efficient transportation network to support the region’s economic development strategy and promote social economic development. The expressway project team faced a variety of challenges to ensure the accurate de-
Proposed bridge design in existing environment. 32
sign of the model and used Bentley’s civil applications to include subgrade roads, bridges, tunnels, and culverts within one model and ensure collaboration across all disciplines in highway design. OpenRoads was used to build a 3D model defining the cross sections of roads and importing data related to horizontal and vertical sections. The project team also used the model for bidding. OpenBridge Modeler was used to build parametric models for bridges with higher efficiency than past work processes. ProStructures was used for models for steel bars in bridges and to detect collisions and errors in design, decreasing the number of errors in con-
