Form-finding and Structural Analysis ofTensioned Cable-Membrane Roof Supported by Steel Trusses and Arches

摘要

This paper uses the gymnasium of Yellow River Conservancy Technical Institute as the study object to conduct arnform-finding and structural analysis of tensioned membrane roof supported by steel trusses and arches. The roofrnof the gymnasium adopts half-open building shape with a combination of steel-truss, arch and cable-membrane.rnThis paper conducts a form-finding and structural analysis to this membrane roof. The beginning designing planrnmerely shows the boundary conditions of the structure and the coordinates at some special points, so it cannotrngive in detail the mathematical description of spatial membrane curves. Through a form-finding analysis, thisrnpaper tries to seek a structural form which will meet the needs of architectural shape and function and match therndistribution of certain self-balance pre-stress. Meanwhile, in order to study the stressing performances ofrntensioned membrane structure and check whether the form-finding results of the membrane meet the needs ofrnstructural bearing capacity and serviceability, the paper uses a finite element analytical program, ANSYS, tornconduct a structural analysis of the tensioned membrane structure. The authors of the paper approach thernstressing and deforming conditions of this membrane and obtain some useful conclusions for engineeringrndesigning, which will provide certain reference for other similar projects.