465x
001295
2024-04-04

Dawang Toll Station in Shaanxi, China

A particularly exciting customer project is the high-speed toll station by Jiangsu Jingong Space Structure Co., Ltd.   In this project, a membrane is supported by an innovative arch truss, which has an interesting appearance and also special properties.

To reduce the deflection of the arch structure, stay cables have been installed on both sides. These are supported by an engineering innovation: four shuttle-shaped lattice columns.

Structure

The moment of inertia of the shuttle-shaped lattice column continuously changes along the column body, reaching the maximum moment of inertia at the middle of the column span. Thus, the columns allow for achieving a higher stability than in the case of comparable column structures.

Due to the unusual structural shape, RWIND was necessary to calculate the wind pressure distribution. RFEM was used to design the steel structure and to create a detailed model of the cable clamp.

Thanks to the integrated solution of Dlubal Software, it was possible to carry out the wind tunnel simulation, cable form-finding, design of the steel member structure, and a detailed finite element analysis of nodes in a single program.

Investor Shaanxi Xixian New Area Development and Construction Management Committee
Structural Design Jiangsu Jingong Space Structure Co., Ltd.


Project Specifications

Model Data

Number of Nodes 724
Number of Lines 2158
Number of Members 1926
Number of Surfaces 136
Number of Solids 0
Number of Load Cases 9
Number of Load Combinations 68
Number of Result Combinations 0
Total Weight 197.899 tons
Dimensions 574.15 x 171.18 x 198.82 feet

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