英国著名的建筑事务所Asif Khan设计了2020迪拜世博会的入口，这三座通往世博会的壮观入口将于2021年10月20向游客开放。该事务所在2020世博会超过六公里的公共区域进行了设计，这些装置是首次公开的作品。它们是对传统的阿拉伯窗花“mashrabiya”的现代探索，“mashrabiya”是一种优雅的设计元素，用于控制当地的光线和通风。每个入口的外观十分宏伟，均由超轻碳纤维复合材料编织而成，这种复合材料具有极高的结构强度。这使入口高达21米，长达30米，并且不需要任何额外的支撑。从远处看，入口似乎是半透明的平面，近距离观察便可发现它是由数百条结构线条组成的。

Asif Khan, renowned British architecture studio, has designed the Expo Entry Portals, three spectacular gateways to Expo 2020 Dubai that will grant entry to visitors from 20 October. The structures are the first works to be unveiled from the studio’s design of more than six kilometres of Expo 2020 Public Realm. The portals are a futuristic exploration of the traditional “mashrabiya”, an elegant design element used across the region to control light and airflow. Each portal’s remarkable appearance comes from being woven entirely from strands of ultra- lightweight carbon fibre composite that lend incredible structural strength. This enables the ethereal portal structures to stand 21 metres high and 30 metres long, without any additional support. From afar the portals appear to be composed of translucent planes, which up close visitors discover are made from hundreds of fine lines of structure.

▼远观，distant view © Helene Binet

▼近景，closer view © Helene Binet

入口装置设有两扇巨大的门，每扇高21米、宽10.5米，世博会为期173天，每天早晨它们都会打开，象征对世界的欢迎。大门引导游客至种满树木的庭院，该庭院也由Asif Khan设计，分别位于世博会的机遇（Opportunity）、流动性（Mobility）和可持续（Sustainability）三个展区。设计师携手一家专注于大尺寸碳复合材料组件的制造商和一名飞机工程师，在历时三年的反复设计中完成了该项目。最终的几何形体解决了结构强度对材料效率、透气性、遮光量以及制造时间的要求。该项目受当地美学的启发，壮大了过去世博会中丰富的创新型结构系列。

The portals feature two vast doors – each door is 21 metres high and 10.5 metres wide – which will be opened every morning of the 173 days of Expo 2020 Dubai in a symbolic act of welcoming the world. They lead visitors to tree-filled arrival courtyards, also designed by Khan, in each of the three Expo 2020 districts: Opportunity, Mobility and Sustainability. The project is the outcome of a three-year iterative design process working hand in hand with a manufacturer specialising in large format carbon composite components and an aircraft engineer. The final geometric pattern resolves the requirements of structural strength against material efficiency, wind permeability, shading quantity and manufacturing time. Adding to the rich lineage of innovative structures from past World Expos, these portals are a future form of architecture which is inspired by the aesthetic of the region.

▼立面，facade © Helene Binet

▼大门开启象征欢迎世界© Helene Binet doors are opened as a symbol of welcoming the world