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Forging a Tailor-Made Coat for OoEli
蔡至恒\ Jeff Tsai
作者：蔡至恒，奧雅纳副总径理.建筑围护结构iS计部
翻i f：邰玉婷.讲师/间士后.荷兰瓦赫宁根大学鬃观与空间规划组：儀礼样，奥推纳工桴师.迖筑围护结构设计部
AUTH O R: Jeff Tsai. Associated Director, Building Envelope Design Department of Arup
T R A N S LA T O R: Tai Yuting. Lecturer / posTdoc, Landscape Architecture and Spatial Planning group Wageningen University & Rearch; Lu Liye, Engineer of Arup, Building Envelope Design Department
在过去的5年里.奧雅纳担任了天冃里项目的幕墙咨询顾问我们为该项目提供了全过程的羃墙咨询服务.包括幕墙方案设计、初步设计、招标 图纸设计、招标评估以及施工管理工作。
在该项目中，伦佐•皮亚诺旨在创建一个独特的绿色城市广场甭墙表面有工业风格的简约分格设计，相对低调又有精心打造的细部，成为广场 空间的有机组成部分。伦佐•皮亚诺建筑工作室（Renzo Piano Building Workshop, RPBW )的设计的目标是秉承伦佐的设计灵感，同时注重细节。虽然幕墙的外观看起来非常“简单”，但其细节的设计和实施是非常复杂且具有挑战性的建筑面对基地外部的幕墙单元宽度较窄，有着非常典型的 RPBWiS计风格，而面向广场内部的幕墙立面分格则更宽，帮助人们更好地感受、欣赏这座城市广场。
所有建筑师都希望客户和公众能够赞赏他们最终的设计成果、对RPBW来说，立面幕墙细节设计既需要满足功能要求，又具有美学价值是非常关 键的。然而，在中国实现高质量的工艺始终是一个挑战，尤其是对于当地并不常见的定制立面蓽墙系统设计。奧雅纳参与的大多数项目都使用了定制的 立面幕墙系统尽管有些系统可能具有类似的竖框或横框设计，但是每个系统都略有不同，需要定制化的设计来实现细节上的特定需求。奧推纳致力于 在实际的工作实践中通过设计深化精研幕墙节点去实现建筑师的愿景。
For 5 years, Arup is the fagade consultant on OoEli project. We provided the full fagade consultancy
rvices for this project, Including preliminary design, detailed design for tender, tender asssment and construction administration.
For this project, Renzo's design is to create an unique green urban plaza within this development. The fagade is to be a simple modular design with an industrial quality, but carefully crafted with intricate detailing, to complement this project but not overshadowing it. Upholding the design inspiration created by Renzo himlf, along with attention to details, is RPBW's design goal. Although the exterior wall design may em "simple", the design detailing and its implementation are both sophisticated and challenging. The fagade modules that face outward from the site maintain the narrow-width windows modules, typically associated with RPBW's design approach, while the plaza-facing fagades have wider/larger windows to better to connect with and appreciate the urban plaza within.
Every architect wish for the final result of their design to be appreciated by the end ur and the general public. For RPBW, the fagade detailing that is both mechanically functional and aesthetically refined is key. However, achieving high-quality workmanship is always a challenge in China, especially for bespoke fagade system designs that are uncommon. Although most of Arup project utilized bespoke fagade systems that shares similar mullion or transom design, each system is slight
ly different and requires new profiles to realize the architect's specific needs pertaining to detailing. Arup's dedication in refining the details through design development is always in practice in the work that we do and is limited only by the architect's aspirations.
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幕埴的选材及技术要点
TECHNIQUES AND MATERIAL SELECTION
天目里的立面外观要追求与整体设计相和谐的金属冓墙外观。我们忠于最初的设计意图，没有替换材料或对幕墙表面进行处理，而是杷主要的时间 和精力放在研究不同的阳极氧化铝板的技术上，就常规的项目来说，业主一般不会投入大璗资源来解决一个问题，但是天目里的业主及管理方鼎力支持 制造商尝试不同的技术方式去实验设计落地的可能性。虽然压型阳极氧化铝板确实花费了非常多的资源与时间来实现，但这是该项目独特的设计特色之 一，奥雅纳很自豪为此做出了贡献。
英语怎么说金属材料的质感对RPBW 非常重要，他们选择了阳极氧化的表面处理方式，在金属铝表面形成一层坚硬而透明的保护层，以呈现出金属铝的自然 本色金属面板上離塑般的轮廊或“凸肋"被仔细地标注了尺寸和方向，可以最好地迎合光线，形成反射和阴影.为单色的表面添加独特的纹理质感。
Creating a homogeneous metal-fagade appearance for this project is the key goal. The time and efforts spent studying the different techniques to produce the anodized aluminum cladding, instead o
f adopting a different material, finish or form, is a testament to the dedication in staying true to the original design intent. Typically, the client's would not have the determination to dedicate much resource in solving just one problemwould regress, but they also invested in this effort by supporting the fabricators to test out different techniques. The stamped anodized aluminum panel did take much resources and time to realize but it is one of the most unique design features of this project, which Arup is proud to have contributed to.
Prerving the material quality of the metal is very important to RPBW and lecting natural anodizing, to form a hard and clear protective layer over the metal, allows the natural aluminum expression to be displayed. The contours or "ribs" sculpted onto the metal panels were carefully dimensioned and oriented to best manipulate the light, under reflection and shadow, to add a distinctive texture to this
monochromatic surface.
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103
单3虫实现铝原色的阳极氧化效果或在铝板表面增加轮廊纹理，在技术上都不难实现但要同时实现这两种效果，就会给设计扣材料选择带来相当大 的挑战.而当时国内非常缺少具有相关经验的生产商，要追求最佳的自然氧化外观，需要持殊等级的5000系列铝合金板但这种板材相对比较坚硬，不太适合冷压成型•与项目需求存在冲突《为了解决这个问题.奧雅纳的设计师和材料专家一起指定了合适的合金'阳极氧化要求和生产技术，协助中 国制造商研究这种板材
在业主对RPBWiS计理念的全力支持下，在一年多的时间里，项目管理和设计团队咨洵了〗〇多家铝板生产商，与不同的制造商合作，研究不同的 生产工艺，探索“超塑性成形”技术.重新研究不同等级的合金材料，探讨每个问题的生产限制.最终得出解决方案。不过令人遗憾的是，由于很难在 中国国内采购到高品质的特定合金板，加上国内阳扱氧化工艺的稳定性还略有欠缺.这款压型阳扱氧化铝板最终从德国采购To create a natural anodizing finish or add contouring texture to the aluminum surfaces is not particularly challenging if realized parately by themlves.However,when combined,it caud considerable challenges.The challenges were difficult to tackle due to lack of experienced fabricators in China in both process.To achieve the best natural anodizing appearance,a special grade of 5000ries aluminum alloy is needed.However, 5000aluminum alloy is relatively hard and not as ductal for cold forming,which conflicts with the profile forming we needed for this project.To find a solution to this problem,we worked with our material scientist to specify the appropriate alloy, a
nodizing requirements and production techniques to aid the Chine fabricators in the production of the cladding panel.
With full support from the client on RPBW's design vision,the project team push forward with this goal.For over a year,project management and design team consulted more than 10 aluminum panel production facilities,worked with various fabricators and fabrication techniquesjncluding"super plastic forminqM technologies,revisit particular grades of alloy materials,studied production limitations for each issue before arriving at the final solution.Due to procurement issue within China with high quality alloy and the average quality of the local anodizing,the anodized contoured aluminum panel was eventually procured from Germany.
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第一轮足尺揆型The First Round of Full-size Mock-up 第二轮足尺视觉模型
The Second Round of Full-size Mock-up
为满足中国规范和预算限制，立面设计也经历过相应调整.例如RPBW 在国外的项目中，较多采用高透明率玻璃t 但在天目里项目中，玻璃的隔 热性以及反射率均经过仔细评估和选择以满足中国规范要求。通过权衡计算，项目在一层商业位置保留高透超白玻璃，二层以上位置使用了阳光控制 Low-E 膜中空玻璃在完成热工分析后，我们把玻璃的配置参数提供给玻璃厂商制作样品各厂商根据参数提供几种300毫米x 300毫米的玻璃小样 供建筑师进行多伦筛选。根据镀膜玻璃的视觉质量、反射效果和外观效果，样品范围缩小到其中几块。被选中的几种样品最终用于制作全尺寸模型，以 进一步评估》
To meet the local regulation and budget constraints, the fagade design also gone through different iterations. For example, RPBW typically prefers to u very transparent glass for other international projects. For OdEli, summer heat-gain and light reflectance of the glass has to be carefully evaluated and lected to meet Chine regulations. To achieve a balance, very transparent glass was ud on the ground floor but IGU, with solar control low-e coating, was ud on 2nd floor fagade and above. After thermal analysis was done, the glass specifications were nt to the glass manufacturers for sampling. Glass suppliers offered multiple 300millimeters x 300millimeters glass s
amples for the architect to lect from, which gone through many rounds of lection and elimination process. Bad on the visual qualities of the coated glass and its reflectivity and appearance from the adjacent surroundings, RPBW narrowed down to a few samples, which were eventually ud on the ful 卜size mock-up for further evaluations.
