清華大學建筑學院徐衛國教授團隊設計3D打印步行橋上海落成

主圖1

    世界最大的混凝土3D打印步行橋在上海落成。由清華大學（建筑學院）—中南置地數字建筑研究中心徐衛國教授團隊設計研發、并與上海智慧灣投資管理公司共同建造。這是一座26.3米長的步行橋，靈感來自中國古代趙州橋的結構方式。

    The world’s longest 3D-printed concrete pedestrian bridge has been completed in Shanghai. Designed by Professor Xu Weiguo from theTsinghuaUniversity(SchoolofArchitecture) -ZoinaLandJointResearchCenterfor Digital Architecture, the 26.3-meter-long bridge was inspired by the ancientAnjiBridgeinZhaoxian,China.

主圖2

東南角人視

    單拱結構采用徐衛國教授團隊自主開發的混凝土3D打印系統技術，其具有工作穩定性好、打印效率快、成型精度高及可連續工作等特點。這座步行橋橋的寬度為3.6米，橋欄板采用了形似飄帶的造型，與橋拱一起構筑出輕盈優雅的體態橫臥于上海智慧灣池塘之上。

    The single-arch structure was created using a 3D printing concrete system developed by Professor Xu Weiguo’s team, integrating digital design, cost efficiency, smart technology, and architectural dynamism. Enclosing the 3.6-meter width, the bridge’s handrails are shaped like flowing ribbons on the arch, creating a light, elegant movement across theShanghaiWisdomBaypond.

 西北角人視

東側俯視

    該橋體結構由44塊混凝土3D打印單元組成，而橋欄板分為68塊單元進行打印，這些構件的打印材料均為聚乙烯纖維混凝土添加多種外加劑組成的復合材料。

    The bridge is constructed of 44 hollowed-out 3D printed concrete units, while the handrails are divided into 68 units. The bridge’s components have been printed from composite materials, containing polyethylene fiber concrete to match the structural performance of conventional materials.

南側俯視

南立面

    在該橋梁進入實際打印施工之前，進行了1:4縮尺實材橋梁破壞試驗，其強度可滿足站滿行人的荷載要求。對于實際施工，整體橋梁工程的打印用了兩臺機器臂3D打印系統，共用450小時打印完成全部混凝土構件。與同等規模的橋梁相比，流線型工藝估計節省了33％，主要歸因于施工未用模板和鋼筋。

    The design process involved the construction of a 1:4 scale physical model of the bridge, built to demonstrate the scheme’s viability, and proving that the bridge could hold pedestrians crowding the entire surface. For the actual construction, concrete components for the bridge were printed by two robotic arms, over the course of 450 hours. The streamlined process is estimated to have produced savings of 33% when compared to a more conventional construction process – attributed mainly to the elimination of templates and reinforcing bars.

遠景

夜景

    該橋預埋有實時監測系統，包括振弦式應力監控和高精度應變監控系統，可以即時收集橋梁受力及變形狀態數據，對于跟蹤研究新型混凝土材料性能以及打印構件的結構力學性能具有實際作用。

    Embedded in the bridge, a real-time monitoring system provides data on vibrating wire stresses and strains. The results will allow for a greater understanding of the practical performance of new concrete materials, and the structural properties of 3D-printed components.

地面局部

扶手局部

    該步行橋由清華大學(建筑學院)-中南置地數字建筑研究中心徐衛國教授團隊設計研發、并與上海智慧灣投資管理有限公司共同建造。

    The bridge was jointly built with the Shanghai Wisdom Bay Investment Management Company.

打印欄板-copy

欄板局部

    混凝土并不是唯一因為3D打印技術而發生重大變化的材料。今年早些時候，哥倫比亞大學推出了一種新的3D打印和掃描新技術，生產出具有真實內飾紋理的木材。與此同時，世界上第一座3D打印鋼橋最近在荷蘭設計周上亮相。   

    Concrete is not the only material undergoing major change as a result of 3D printing technology. Earlier this year,ColumbiaUniversityunveiled a new technique for 3D printing and scanning, producing a timber lookalike with an authentic interior grain. Meanwhile, the world’s first 3D-printed steel bridge was recently unveiled at Dutch Design Week. 

打印過程

打印過程-橋面1

打印過程-橋面2

結構試驗

平面

剖面-長

剖面-短

    建筑師：清華大學(建筑學院)-中南置地數字建筑研究中心

    地點：上海

    設計團隊：徐衛國  孫晨煒  高遠  張志齡    文徑網絡設計整理

    原標題：3D打印步行橋

(本文來源：清華大學建筑學院網     文徑網絡數據中心：劉紅娟 尹維維 編輯      劉真 方俊 審核）

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