Fold-forming Nodes in Public Art Commissions
公共艺术中的折叠成型节点
标签：公共艺术, 大尺度, 折叠, 预制拼装
公共艺术竞标中折叠成型的优势是"单位重量的体积感"：1.5–2.5 mm 铜板经 2–3 组主导折即可生成 2–4 m 高的雕塑体量，比锻造实心体省料 60% 以上。工程要点：折叠区背面加暗藏方管骨架分担风载（按当地 50 年一遇风压核算），折缝用聚氨酯注缝胶密封防冻胀；表面统一做预氧化铜绿后喷涂硅氧烷防污。主流落地流程是"工厂预制折件 + 现场螺栓拼装"，单件运输尺寸控制在 1.2 m 内。
In public-art competitions fold forming wins on volume per kilogram: 1.5–2.5 mm copper, two or three dominant folds, and a 2–4 m sculpture emerges using 60% less material than forged solid work. Engineering points: a concealed steel-tube armature behind the folds carries wind load (checked against the local 50-year gust), joints are sealed with polyurethane sealant against freeze-thaw, and the surface is pre-patinated then siliconised against grime. The standard route is factory-folded modules bolted together on site, each module within 1.2 m for transport.