西蒙·维列的竹穹顶设计方法与技术策略研究OACHSSCD

Colombian architect Simón Vélez has gained international acclaim for his innovative,original bamboo construction system.However,existing research has predominantly concentrated on case analyses of his bamboo structures and examinations of joint craftsmanship,while there remains a lack of extraction of systematic design methods for specific structural typologies.Focusing on Vélez's bamboo dome works,this study aimed to extract the transferable and referable bamboo dome design methods through a systematic analysis of his tectonic philosophy and technical strategies,thus providing a theoretical reference and practical guidance for contemporary bamboo structural design in China. First,the"balance-oriented"tectonic philosophy of Simón Vélez and his prototype design method,whereby"experiment is the rule,"were analyzed,providing insight into his empirical logic of validating structural safety based on physical model testing.Subsequently,research around the path of"material-component-structure"was carried out.At the material level,the mechanical adaptability and natural variability of Guadua bamboo were synthesized,clarifying its structural strength advantages and the constraints of individual discreteness against design.At the component level,the key fabrication techniques and composite joint technologies,such as cement mortar-filled steel connectors and heat-treated bamboo rhizome beams,were analyzed deeply through three-dimensional modeling and serial diagrams.At the structural level,the structural prototypes for bamboo domes were extracted by combining modern ribbed-ring shell theory,and stress simulation analyses of two rib-beam assembly strategies(monolithic type and segmented type)were carried out using Abaqus finite element software to identify the structurally vulnerable zones and displacement characteristics. The results indicated that for monolithic rib-beam domes,stresses concentrated at the bottom of support columns and ring members,with mid-span cantilevers prone to vertical displacement.For segmented rib-beam domes,structural sensitivity to bottom bearing capacity was heightened,and extended cantilever ribs were susceptible to displacement.On this basis,a comprehensive design process framework for bamboo domes encompassing topological diagramming,parameter control,and decision-making criteria was established,clarifying applicable scenarios and technical essentials for the two assembly strategies.The monolithic assembly requires strict control of dome curvature and ring member spacing to align with the mechanical limits of bamboo.The segmented assembly emphasizes scale definition and spatial stratification,and shapes spiritually resonant spaces based on the natural curvature of bamboo rhizome beams. Finally,the feasibility and limitations of the design system localization in China were discussed in this study.It was highlighted that China possesses abundant bamboo resources,but the applicable span of bamboo domes shall be controlled within 30 m due to limitations related to differences in regulatory standards,characteristics of different bamboo species,and construction culture.Priority should be given to the segmented assembly strategy to reduce construction complexity.By deciphering the compositional logic and key technologies of Vélez's bamboo domes,this study provides systematic methodological support for the formal generation and mechanical optimization of bamboo structures.The research conclusions have positive significance for promoting the sustainable development of China's bamboo industry and the modernization of vernacular architecture.