本项目为参加上海城市空间艺术季的空间展品。自从2017年被贯通之后，黄浦江沿岸滨水公共空间成为上海的城市名片。

▼项目视频，Video

The project is located on the north bank of Zhangjiatanggang River, where a vehicular bridge and a landscaped pedestrian bridge span the waterway. Since its full opening in 2017, the Huangpu River waterfront has become a defining element of Shanghai’s urban image.

▼桥下舞台与滨江步道，Stage beneath the bridge and riverside promenade © 田方方

不同于中心城区的精致、喧嚣的都市氛围，张家塘港桥这一段滨江公共空间的氛围，是本地的和生活的。附近在老住区的大量本地居民在滨江聚集活动,运动健身,跳各种类型的广场舞。每日下午4点到晚上8点，这里都被各种公共活动占满。若沿着江边从北往南一路小跑,穿过步道两侧跳舞和交谈的人群,便会到达张家港桥下空间,这是项目的所在地。

▼滨江生活一览，Overview of riverside living © 旭可建筑

Unlike the polished and bustling atmosphere of the city center, the riverfront near Zhangjiatanggang Bridge retains a more local and everyday character. Nearby residents often gather here for exercise, socializing, and square dancing, especially between 4 PM and 8 PM. The project is located on the north bank of Zhangjiatanggang River, where a vehicular bridge and a landscaped pedestrian bridge span the waterway.

▼公共活动平台与步行路径，Public gathering platform and pedestrian path © 陈颢

基地现有两座桥沿黄浦江方向跨越张家塘港河,连接南北两岸。它们分别是双向6车道的机动车桥和独立位于黄浦江滨江带的景观步行桥。宽阔的机动车桥投下巨大的阴影，防汛墙堵在桥下空间的另一端，让人难以翻越。而景观步行桥虽意在连接滨江步行空间，但两侧的起坡点都距离江边较远，若沿江步行则很容易被错过,行人往往需要折返很长一段距离才能上桥过江。张家塘港桥下空间比较低矮，最低处净高只有约2.2米，并不适合容纳大型的公共活动。但若能引导人流翻越防汛墙，则能借用建于1986年的宏文纸厂老桥跨越张家塘港河回到黄浦江边，沿江的步行系统也能被连接起来。作为2023上海城市空间艺术季的永久参展作品，我们采取了轻介入的策略，通过设计引导人流翻越防汛墙，并结合现有空间特征创造鼓励公共使用的可能方式。

▼桥下空间成为滨江流线转换节点，The under-bridge space becomes a transition node within the waterfront circulation © 旭可建筑

▼改造前场地周围环境，The surrounding environment of the site before the renovation © 旭可建筑

The broad vehicular bridge casts a deep shadow over the site, while a floodwall obstructs access beneath it. Although the pedestrian bridge was intended to connect riverside routes, its access points are set far from the water and are therefore often overlooked by passersby. The space beneath the bridge is relatively low, with a minimum clearance of only about 2.2 meters, making it unsuitable for large-scale public events. Yet by guiding people over the floodwall, the old Hongwen Paper Mill Bridge, built in 1986, can become a key connector that completes the riverside walkway. As part of the 2023 Shanghai Urban Space Art Season, the project was conceived as a public installation with a limited budget and tight schedule. At the same time, it presented an opportunity to extend beyond the building control line and contribute public space back to the city.

▼改造后场地周围环境，The surrounding environment of the site after the renovation © Daily建筑摄影-刘国威

▼“缝”西侧的舞台空间，Stage space on the west side of the “crack” © 田方方

桥—缝—墙
Bridge, Crack, Wall

每日下午晚一点时间去现场,西斜的阳光进入桥下空间,在桥下地面拉下一条长长的光带,为阴暗的桥下空间带来活力。允许阳光进入的,是被大桥和防汛墙夹出了一条缝隙空间。这条缝形成于桥结构和防汛墙在空间上的相互错动。它宽3.9米，高4.15米，长30米,沿防汛墙展开。在防汛墙的另外一侧，按规定要留出6米宽的防汛通道，不能有任何覆盖。

▼桥下空间中的“峪口”尺度，Compressed spatial threshold beneath the bridge © 旭可建筑，底图：田方方

▼剖面图，Section © 旭可建筑

Late in the afternoon, the sunlight enters the space under bridge and casts a slit of light on the ground, bringing vitality to the dark. It is a crack between the bridge and the flood wall that allows sunlight to enter. This crack is formed by the spatial discrepancy between the elevated bridge structure and the flood wall. This crack runs parallel to the flood wall, it is 4.2-meter-wide, 4.15-meter-high and 30-meter-long. We also need to keep a 6-meter-wide flood control channel with no coverage beside the wall according to the regulations.

▼桥下台阶与缓坡连接，Steps and ramp beneath the bridge © 田方方

这个缝隙空间对垂直于防汛墙方向穿越的体验并不友好：桥结构的底板和防汛墙共同作用，在身体运动方向上对头顶空间形成挤压的态势，让人觉得紧张。因此设计目标聚焦于如何为城市人流提供相对好的缝隙空间穿越体验，并给两侧有可能发生的驻留性公共行为提供支持。我们希望能引导人流，避免垂直于防汛墙爬升的身体体验，而让人在接近防汛墙的过程中“自然”地顺转身体，斜向爬升翻过防汛墙。在具体操作中，这个目标是通过设立50步内和5步内不同的注意力焦点来实现的。通过栏杆和台阶平面形式的变化，以及第一步台阶的高度引导人流在接近缝隙空间的过程中转向。设计将第一步台阶对齐于桥梁箱型结构的高差变化，形成一个2米高的峪口——视觉尺度上不容易被感知，但触觉尺度上不会被忽视的界面，在不知不觉中实现对人流的双向限制和引导。双向的通过性人流都会因为这种潜在的“撞头“感而自觉性的中断步行节奏，但2米的净高也保证了通行足够安全。

▼桥底结构与人的触觉距离，Tactile proximity between body and bridge structure © 旭可建筑，底图：Daily建筑摄影-刘国威

The space beneath the bridge is relatively low, with a minimum clearance of only about 2.2 meters, making it unsuitable for large-scale public events. Responding to the existing site conditions, the design adopts a strategy of light intervention, guiding people over the flood wall and creating a new public route and spatial experience. A series of steps and ramp were set to connect platforms of different heights and guide people over the flood wall. In response to the existing atmosphere, we set a connection to stimulate relevant public activities: the steps become audience area of the dance floor under bridge, and another part becomes a stage on the other side of the flood wall.

▼一系列台阶与坡道作为连接，A series of steps and ramps as connection © Daily建筑摄影-刘国威

▼桥下灰空间被转化为社区共享场地，The under-bridge transitional space is transformed into a shared community venue © 田方方

桥下+舞池 ——缝+台阶——墙边+舞台
Dance Floor, Steps, Stage

在引导人流跨越防汛墙的同时，设计也关注给两侧有可能发生的驻留性公共行为提供支持。设计回应现有空间氛围，设置的台阶在一边成为桥下舞池的观众席，在另外一边成为墙边舞台的舞台部分,激发相关公共行为的发生。缝的东侧位于桥下，厚重的砼结构漂浮于头顶，几乎触手可及。水平展开微微上凹的顶面产生了很好的声音反射效果。站在桥下说话的时候，感觉回音从四面涌来，是个内聚的空间。而不远处就有人在跳广场舞、排练乐器。因此我们设想做一个桥下舞池，大台阶也变成了舞池的看台。我们在桥下加了LED灯光，灯光被砼的桥底反射，形成一个光怪陆离的内部小世界。

A series of steps and ramp were set to connect platforms of different heights and guide people over the flood wall. In response to the existing atmosphere, we set a connection to stimulate relevant public activities: the steps become audience area of the dance floor under bridge, and another part becomes a stage on the other side of the flood wall. On the east side of the crack, the overhead heavy concrete structure seems near at hand. The slightly concave bottom surface of the beam produces a good sound reflection. Not far from the bridge, people always dance and rehearse musical instruments. Therefore, we conceived a dance floor under the bridge with a series of steps as the audience area. A curved steel rail, on which are wires of the lights, enhances the visual enclosure of the dance floor. In addition, we made the lights flash to the tempo of the music. When colorful lights are reflected by the concrete surface, there is a small fancy world under bridge.

▼设计理念，Design concept © 旭可建筑

缝的西侧，是一大块政府的收储用地。之前的工业用的厂房已经完全拆除，该地块在设计之前为一片空地。往回看，张家塘港桥就横在面前,基础设施尺度的砼结构正好形成一个干净的背景。因此我们结合6米宽防汛通道做成了一个舞台，舞台上有演出时，桥上的行人也可以驻足观看。面对舞台，我们加建一个小半圆的看台，也作为景观小跑道到桥边的过渡，并且简单的布置了灯光。

On the west side of the crack, there is a vacant space owned by the government, and the former factory here has been completely demolished. Standing here looking back, the concrete structure of Zhangjiatang Bridge offers a clean background. To keep the flood control channel clear, we designed a 6-meter-wide stage of the same width to it. As a result, pedestrians on the bridge can stop to enjoy the performance on the stage at any time.

▼开放场地激活桥下公共界面，The open ground activates the public interface beneath the bridge © 田方方

后记
Afterword

开展当天，参展的艺术家和建筑师们沿江边散步，顺便相互看看作品。到了桥下空间，几个建筑师纷纷掏出手机献唱。之后我们又组织了几次现场吃烧烤、唱歌活动。桥下舞池的回音效果透着些粗粝的闷，和着LED生猛而强烈的彩色灯光，像是勾兑的酒，冲且容易上头。如果一个人散步过去，走到墙边舞台一侧，则能感受到江风、听到虫鸣，公园中甚至还时常有几条友好的流浪狗。隔着空旷的舞台看到混凝土桥上飞驰而过的车和匆匆赶路的快递员们，有一种隔岸观火之感。自然渗透到基础设施的缝隙中，和人造物融为一体，而人的使用方式，似乎也和在自然间无异。

Walking along the river to the stage, you can enjoy the wind, hear the insects, even come across friendly dogs in the pocket park sometimes. Nature permeates the infrastructure and merges with the artifacts. And the way people act seems to be the same as they are in nature. Nature permeates the infrastructure and merges with the artifacts. And the way people act seems to be the same as they are in nature.

▼灯光测试，Lighting test © 旭可建筑

上海的内城中心已经完全去二产化，伴随着制造业向着郊区和上海城区外的迁移，上海的城市空间也变得日益的精致和士绅化，而这也许是这段滨江公共空间体验的可贵之处。它给人日常的、粗粝的、踏实的放松和自由之感。我想这种感觉是由开阔的江面、大尺度的基础设施、和仍然野生的自然所共同塑造。而伴随着周边住宅地块的开发,这一带也一定会变得更精致宜居。所以可能最值得庆幸的是在2023年的当下，借助城市空间艺术季这个公众事件，我们介入了这块场地，和现场的自然物和人造物一起合奏，完成了这么一个场所。他的体验指向了正在消失的上海，或那个“在物质意义上已完全消失，而大众文化中不为人熟知的隐形上海。”

The secondary industry has completely disappeared in the inner city of Shanghai. With the migration of the manufacture to the suburbs or great beyond, Shanghai’s urban space has become increasingly exquisite and gentrified, which makes the experience along the riverside so valuable. The experience also brings a sense of relaxation and freedom that is familiar, coarse, and specific. I believe it must be shaped by the wide river, the large-scale infrastructure, and the still wild nature. I believe it must be shaped by the wide river, the large-scale infrastructure, and the still wild nature.

▼灯光装置强化桥下空间氛围，Lighting installations intensify the atmosphere beneath the bridge © 田方方

▼渐变灯光营造沉浸式夜间体验，Gradient lighting creates an immersive nighttime experience © Daily建筑摄影-刘国威

项目名称：桥下舞台
项目地点：上海市徐汇区张家塘港桥(北岸)桥下空间
建成状态：建成
基地面积：1400平方米
桥下面积：650平方米
城市空间艺术季总召集人：上海市城市规划设计研究院
城市空间艺术季主策展人：李翔宁
城市空间艺术季执行策展人：高长军
设计单位：旭可建筑
主创建筑师：刘可南，张旭
设计团队：刘欣玥，沙玮琦，张朔，黄其凡(实习)，俞雯靖(实习)，舒晓瑜(实习)
结构咨询：上海三垚建筑工程设计有限公司
结构设计：缪建波，陈通
机电顾问：俞晓明
灯光顾问：杨秀
设计时间：2023年6月-2023年9月
建成时间：2023年9月
摄影：田方方，陈颢，Daily建筑摄影-刘国威，旭可建筑