Research on structural design of a large-span cantilever canopy stadium in Guiyang

doi:10.14006/j.jzjgxb.2022.0873

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Journal of Building Structures ›› 2023, Vol. 44 ›› Issue (09) : 51-61. DOI: 10.14006/j.jzjgxb.2022.0873

CADG Engineering cases

Research on structural design of a large-span cantilever canopy stadium in Guiyang

SUN Hailin, WANG Haibo, TIAN Yu, HUO Wenying, YU Lei, YANG Yongrui, LU Ying, SHI Hong

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This paper conducted research on some key design points of a large-span cantilever canopy (the maximum cantilever length is 83.2 m) of a large complicated sports and commercial complex building, to clarify its force mechanism and structural performance. Comparisons were made in terms of architectural performance, construction conditions and material quantities, etc. The lower part of the structural system adopts a reinforced concrete frame-shear wall structure, and the cantilever canopy adopts a spatial cantilever truss and ring truss structure. The forces and deformations meet the design requirements. The seismic travelling wave effect of the overall structure was analyzed and the influence coefficient at 1 100 m/s wave speed was used as the seismic effect amplification coefficient. By means of performance-based design of the structure, the performance targets of key elements were strengthened and the elastic-plastic performance of the structure under rare earthquakes was verified. The overall stability of the canopy was investigated by performing linear elastic and double non-linear buckling analysis on the overall model. The former obtained the calculated length coefficients of the vertical plane truss bars, and the structural force state analysis was supplemented for envelope design using the direct analysis method; the latter investigated the plastic development mechanism of the structure, and the results show that the structure has a reasonable sequence of plastic development and a certain level of safety reserve. Considering the failure of important elements in the force transmission path under accidental loading, this paper adopted the method of removing elements to study the ability of the canopy to resist continuous collapse, and the results show that the canopy structure has a reliable alternate force transmission path and meets the design requirements. In combination with the actual construction method, the structure was simulated in a zoned and step-by-step construction analysis compared to the one-step forming state, and the differences in vertical displacements and maximum stresses in the main structure were slight, which proves the feasibility of the construction solution.

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large span cantilever truss / scheme comparison / stability analysis / traveling wave effect / construction simulation

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SUN Hailin, WANG Haibo, TIAN Yu, HUO Wenying, YU Lei, YANG Yongrui, LU Ying, SHI Hong. Research on structural design of a large-span cantilever canopy stadium in Guiyang[J]. Journal of Building Structures, 2023, 44(09): 51-61. https://doi.org/10.14006/j.jzjgxb.2022.0873

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