有限元法
穹顶(地质)
结构工程
压力(语言学)
强度因子
断裂韧性
巴(单位)
工程类
材料科学
地质学
复合材料
古生物学
语言学
哲学
海洋学
作者
Mirjana Jelić,Aleksandar Sedmak,Boris Folić,Simon Sedmak,Mihajlo Aranđelović,Radomir Folić,Dorin Radu
标识
DOI:10.3221/igf-esis.67.24
摘要
Belgrade fair hall 1 is well known for its dome, which is still the world largest self-supported construction made of pre-stressed concrete, with its diameter of 106 m. In this paper the Finite Element Method (FEM) was performed to analyze different loading and supporting conditions. At the same time, crack growth in a support column was simulated by the extended FEM (XFEM). Results of numerical calculations indicate ingenious design of such a complex structure which was based on “hand” calculation decades ago, without computers. In addition to classical engineering and more advanced numerical calculations, risk based analysis was performed taking into account artificially introduced crack and Failure Analysis Diagram, obtained using stress intensity factor and net stress, as well as fracture toughness and critical stress. This analysis, made for the first time for Belgrade fair hall 1, proved that its structural integrity is jeopardized only when a crack reaches half the thickness of a steel bar.
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