建筑設計? 泛式建筑

結構設計? 和作結構建筑研究所

設計統(tǒng)籌管理? ConCom集良建筑

項目地點? 浙江湖州

設計時間? 2023年—2024年

建筑跨度? 15.8米

撰文? 王莽源（建筑部分）、張準（結構部分）

泛式建筑于2022年七橋國際競賽中，獲得了其中兩座步行橋梁的設計權。一紙橋，便是其中一座。

Far workshop won two pedestrian bridges in the 2022 Seven Bridges International Competition. Folio Bridge is one of them.

如紙

Like a sheet of paper

一紙橋，源于對一張A4紙的想象：如何讓一張紙，僅僅通過幾條折痕便可達到一定的力學強度，同時又能維持紙張本身輕薄且略顯脆弱的反差感。

Folio Bridge originates from the imagination of an A4 sheet of paper. How can a piece of paper achieve a certain mechanical strength just by a few creases, while also maintaining the paper's own light and slightly fragile contrast.

我們在測試了多種折痕的可能性后，選擇了僅通過一條折痕來實現(xiàn)橋梁跨度的想法。在與和作結構研究所的合作中，我們確認了通過三條構造曲線以及一個構造點的方式來擬合折痕的橋體形式。通過反復調(diào)整三條構造線的曲率以及上方構造點的位置，我們試圖尋找受力的最佳分布。

After testing various possibilities of creases, we chose the idea of achieving the bridge span with just one crease. In the modeling process, we confirmed the bridge body form by fitting three construction curves and one construction point to the crease. In collaboration with Zhang Zhun's Structural Research Institute, we repeatedly adjusted the curvature of the three construction lines and the position of the construction point above to find the best distribution of forces.

如山

Like a mountain

最終確定的橋體由于坡度過大，我們放棄了直接讓行人上橋面的可能性。隆起的橋面，讓我們仿佛看到了西面的山?；蛘呶覀兛梢宰屓藗?nèi)缤呱仙介g的小路一樣走上這座橋。一條細長的踏步小徑架在橋面上，下面是如紙薄般“厚重的山”。

Due to the steep slope of the final determined bridge body, we abandoned the possibility of allowing pedestrians to directly ascend the bridge surface. The bulging bridge surface, we saw the mountain to the west. Or we could let people walk on this bridge as if walking on a mountain path, a slender stepping path is placed on the bridge surface, with a mountain as massive as it is as thin as paper.

為了最大程度消解踏步小徑的實體感對橋體本身的視覺干擾，我們采用了纖細的高強度螺紋鋼筋作為單一材料，實現(xiàn)了從支撐到踏板以及扶手的材料一體化設計。

To minimize the visual interference of the stepping path's solid sense on the bridge body itself, we used slender high-strength threaded steel bars as the single material to complete the material integration from support to step and handrail.

施工

construction

整座橋跨度15.825米，橋體鋼板厚度25毫米。由于橋體的曲線復雜，施工方事先根據(jù)設計剖面制作了一個定位框架。橋體被分解成多塊不同曲率的鋼板，用壓軸機進行人工彎折調(diào)試，隨后通過已制作好的框架進行空間定位及整體焊接，最后再安裝螺紋鋼筋步道。

The entire bridge spans 15.825 meters. Due to the complex curves of the bridge body, the construction side made a positioning frame according to the design section in advance. The bridge body was divided into multiple steel plates with different curvatures, which were manually bent and adjusted by a press machine. Finally, they were spatially positioned and welded as a whole through the pre-made frame. The threaded steel bar path was installed afterwards.

由于本橋結構的特殊性，投入使用前我們進行了原位堆載實驗。

Due to the unique structural characteristics of this bridge, a load test was conducted on-site before it was put into use.

由一張輕薄的“紙”折成了一座“厚重的山”，纖細的鋼筋彎成了“山間的小路”。一紙橋?qū)嶋H上討論的是，由極致結構帶來的視覺與身體體驗上的反差。這種反差喚起了人們對這座橋獨特的空間知覺。

A thin sheet of 'paper' is folded into a 'massive mountain', and slender steel bars are bent into 'mountain paths'. A paper bridge in fact is discussing the unique spatial experience evoked by the extreme structure, which creates a visual and physical experience contrast. Through this contrast, it awakens people's perception of the bridge's distinctive space.

完整項目信息

項目名稱：一紙橋

項目類型：步行橋

項目策劃：urbaneer都市工作群

建筑設計：泛式建筑 / 王莽源，楊洋，李睿

結構設計：和作結構建筑研究所 / 張準，張沖沖，胡曉劼

設計統(tǒng)籌管理：ConCom集良建筑

撰文：王莽源（建筑部分），張準（結構部分）

攝影師：Biosphere建筑攝影（周子杰，俞誦陶），泛式建筑

設計時間：2023年—2024年

建筑跨度：15.8米

版權聲明：本文由泛式建筑授權發(fā)布。歡迎轉(zhuǎn)發(fā)，禁止以有方編輯版本轉(zhuǎn)載。
投稿郵箱：media@archiposition.com