Research Progress on Design, Construction and Performance of Cable-supported Grid Structure
About the author:
1. China Construction Fourth Engineering Division Co., Ltd.,Guangzhou, Guangdong 510630,China;2. Guangzhou New Central Axis Construction Co., Ltd., Guangzhou, Guangdong 510623, China
Abstract:
As an efficient structural form in the field of large-span space architecture, cable-supportedgrid structure realizes the mechanical optimization of tension instead of compression through thesynergistic force of cable and grid components, which significantly reduces the self-weight by 30% ~50% and improves the material utilization rate by more than 40%. It becomes the preferred scheme forthe buildings with a span of 150 ~ 300m. The research progress of the structure in the past ten years issystematically expounded. At the level of design theory, the coupling mechanism of form-finding andforce-finding is mainly analyzed, and the significant influence of geometric nonlinear effect on the stabilityof large-span structure is clarified, and the core role of finite element analysis and prestress optimizationin improving the bearing capacity of the structure is revealed. In terms of construction technology, theapplication scenarios of support method and non-support method are compared, the advantages of non-support construction in cost and construction period control and its strict requirements for millimeter-levelprecision control are emphasized, and the application bottlenecks of monitoring technologies such as 3Dlaser scanning and total station in error management are analyzed. In the dimension of performanceanalysis, the research results of static performance, stability, dynamic and seismic performance are systematically sorted out, and the influence mechanism of construction error coupling effect and nonlinearbehavior of key joints on structural performance is pointed out. The research shows that the existingtechnology still has challenges in the simulation of complex mechanical behavior and construction dynamicresponse control of super large-span structures above 300m. In the future, the construction of refinedmechanical models with multi-physical field coupling should be focused on, intelligent constructionmonitoring and adaptive control technology should be developed, the engineering application of newmaterials such as carbon fiber composite materials should be promoted, the current technical bottleneckshould be broken through, and theoretical support and technical guidance for the innovative application ofcable-supported grid structures in super large-span buildings should be provided.
