Structural Design and Construction Analysis of a Long-Span Folded Surface Roof
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摘要: 文瑞山海客厅的大跨度折面形屋盖造型复杂,为实现建筑造型要求,结合屋盖跨度、支座条件等因素,采用了折板网架+上弦支座+下弦支撑的结构形式。对该结构的参数化建模过程进行介绍,计算分析网架结构的静力、动力及稳定性能,并考虑网架结构与下部支承结构的相互影响。由于网架连接节点种类较多且构造复杂,采用非线性有限元软件建立实体单元模型对关键节点进行分析,同时进行了网架碰撞检查和施工过程模拟分析。结果表明,结构整体及节点设计合理,各项性能指标均能满足规范要求;采用的分块安装法施工方案提高了施工效率,保证了施工质量及工期。Abstract: The roof structure of Wenrui Shanhai Living Room features a complex long-span folded surface. To meet the architectural design requirements and considering factors such as the roof span and support conditions,a structural form combining folded plate trusses, top chord supports,and bottom chord bracing was adopted. This paper introduced the parametric modeling process of this structure, including the calculation and analysis of the static,dynamic,and stability performance of the truss structure,while also considering the interaction between the truss structure and its lower supporting structure. Given the diverse and complex types of truss connection joints,nonlinear finite element software was used to establish solid element models for the analysis of key joints,Additionally,colli- sion detection of the spatial frame was carried out,along with a simulation analysis of the construction process. The analysis results indicate that both the overall structure and joint designs are reasonable,and all performance indicators meet the regulatory require- ments,the segmented installation method construction plan enhances work efficiency while ensuring both construction quality and proj- ect schedule adherence.
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