Abstract The Anlu City Sports Center Stadium stands at a height of 30.3 meters, with its canopy formed by an outer circle of approximately 210 meters in diameter and an ellipse of 173 meters by 143 meters, featuring a wavy design composed of 26 "ginkgo leaf" panels. The main structure adopts a reinforced concrete frame system, the floor slab uses a traditional beam-slab system, and the canopy employs a planar intersecting spatial steel framework. To address the impact of the eccentricity of the top node of the V-shaped support on structural integrity, wind tunnel tests were conducted to obtain wind pressure values, static and dynamic responses, and equivalent static wind loads for 50-year and 100-year recurrence intervals to support wind resistance design. Horizontal bracing was used to reduce nodal eccentric bending moments and minimize steel beam cross-sections. Finite element analysis was performed on complex nodes such as V-shaped supports and columns, and elastic and elastoplastic overall stability analyses were carried out considering geometric and material nonlinear effects. The results showed that horizontal bracing effectively mitigates nodal eccentricity issues, that finite element analysis of complex nodes verified structural safety, and that overall stability meets design requirements.
Jing et al. (Mon,) studied this question.
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