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吴春花 《建筑技艺》（AT）执行主编

记得2021年4月参观品鉴江苏园博园主展馆，那是基于水泥厂的改扩建项目，从建筑单体到群组空间，从保留遗存到穿插新建，从厚重的结构到柔和的结构，建构如植物一般生机勃发；此次来到荣成市少年宫，当听海风呼啸穿越拱洞，当感清水混凝土拱券之山石趣味，当观屋顶斜坡上狼尾草随风摇曳与海面辽阔，那是一种拥抱自然的心旷神怡。一个是为大众观览的集群，一个是为青少年的活动中心，开放、自由的空间体验下，不同的环境、功能，不同的空间意象，不同的材料与工艺，塑造了完全不同的趣味。本期“AT建筑”选取崔愷院士团队设计的荣成市少年宫，从建筑、景观、照明、材料、建造层面多维解读风景中的“砼”趣。

“本土设计”，即建筑立足于土地，因地制宜选择不同的设计策略；建筑无法超越自然，却可以向自然学习，弥合与自然的关系，可随形、嵌入，或靠色、顺势，或延伸、点景，成为与自然、人文环境共存的风景的有机部分。回到荣成市少年宫，设计如何为青少年、大众及城市、环境创造风景呢？这是海边的风帆之景，就像徐徐驶出的航船，充满野趣的花径引导人们走向“船头”迎向大海；这是海风、天光穿梭的“砼”趣之景，清水混凝土拱、壳、穹组合、穿插形成的孔洞及其开敞的公共广场，吸引着人们，也吸纳着自然光与自然风；这是技艺精湛的建造之景，匠人们三维深化、样板试验、支模、一体浇筑堪称完美；这也是立于城市与自然之间的绿色之景，建筑与结构、机电、装饰、景观的一体化设计是以建筑师为主导的绿色建筑实践的强有力彰显。所有这些都使得建筑成为一道独特的童趣之景。

从崔愷院士团队的荣成市少年宫到兰州城市规划展览馆，设计与建造之间，建筑与风景之间，自然与城市之间，是技艺，是匠心，更是建筑师对自然的无限向往。

I remember visiting Jiangsu Horticultural Expo in April 2021,which is the reconstruction and expansion based on the cement plant.From building monomer to group space,from retaining remains to interspersed new construction,from thick structure to soft structure,the construction is full of vitality like plants.When I came to Rongcheng Youth Activity Center this time,when I heard the sea breeze roaring through the arch hole,when I felt the mountain and stone interest of as-cast finish concrete arch,and when I saw the pennisetum swaying with the wind and the vast sea on the roof slope,it was a relaxed and happy embrace of nature.One is a cluster for the public,the other is an activity center for teenagers.With the open and free space experience,different environments,functions,spatial images,materials and technique shape completely different interests.This issue of "AT special" selects Rongcheng Youth Activity Center designed by Academician Cui Kai's team to interpret the "concrete" interest in the landscape from the aspects of architecture,landscape,lighting,materials and construction.

"Land-based Rationalism",that is,buildings are based on land and choose different design strategies according to local conditions.Architecture cannot surpass nature,but it can learn from nature and bridge the relationship with nature.It can follow the shape,embed,or take similar color,follow the trend,or extend and point the scenery,so as to become an organic part of the landscape coexisting with nature and humanistic environment.Back to Rongcheng Youth Activity Center,how can the design create scenery for teenagers,the public,the city and the environment? This is the scenery of sails on the beach,just like a ship slowly sailing out.The flower path full of wild interest guides people to the "bow" to meet the sea.This is an interesting scene of "concrete" shuttling between sea breeze and sky light.The combination of as-cast finish concrete arches,shells and domes,interspersed holes and open public squares attract people,as well as natural light and natural wind.This is the scene of exquisite construction.The 3D deepening,model test,formwork erection and integrated pouring of the craftsmen are perfect.This is also a landscape between the city and nature.The integrated design of architecture and structure,electromechanical,decoration and landscape is a strong manifestation of the green building practice led by architects.All these make architecture a unique scene of children's naiveness.

From Rongcheng Youth Activity Center to the Lanzhou Urban Planning Exhibition Hall,between design and construction,between architecture and landscape,between nature and city,there are skill,ingenuity,and architects' infinite longing for nature.