Structural Design and Construction Analysis of a Long-Span Folded Surface Roof

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.