The design team of CSCEC-Steel recently completed a steel footbridge in Shenzhen, China. The design span is 10 meters and the net width of the bridge is 2.5 meters. The maximum width of the outer edge of the balustrade is 4.64 meters, and the single-span steel arch structure is adopted. It used a total of 5 tons of steel. The two ends of the bridge are the green pedestrian road and the waterfront trestle road, and there is an ecological wetland in the park in its downstream, and it is surrounded by the park with mountains. It is also surrounded by green and beautiful scenery. In such a special and typical landscape space, the bridge is not only the traffic facilities connecting the two sides, but also the art of harmonious coexistence with the environment
▼桥梁两岸连接慢行绿道和滨水栈道，the two ends of the bridge are the green pedestrian road and the waterfront trestle road
▼慢行绿道和滨水栈道，the green pedestrian road and the waterfront trestle road
▼慢行绿道，the green pedestrian road
The design team hopes not only to meet the basic technical and functional requirements, but also to integrate the social attributes of landscape bridges, and further express the structural logic and design aesthetics of slow-moving bridges through the design vocabulary of bridges themselves. Architects hope to start from the tasks given to the bridge itself, from streamline, form, function and social contact to materials, structure, details and art, and give the final presentation as a natural, modest and poetic posture in the park.
▼以一种自然、谦和、诗意的姿态出现，a natural, modest and poetic posture
As for the design method of bridge, parametric design was adopted to generate controllable parameters model. After repeated adjustment and optimization, combined with topography, the micro arch of the bridge body is accurately controlled to achieve the balance of beauty and mechanics. 162 silver fluorocarbon painted steel sheets consist of a series of “7” type railings, which are welded on the outside of the main beam in four groups and assembled from the two ends of the bridge to the middle and form a pair of beautifully shaped bridge railings with elegant streamlines, and they look light and full of artistic senses, like a pair of wings composed of 162 feathers.?At the same time, the horizontal width of the top of the railing is used and the designer put a 3-metre-long FRP base plate in between, which naturally forms a landscape seat suitable for human body size. The seats on the two sides of the railing are 2.5 meters apart, which is a pleasant width suitable for having conversations while sitting, thus created a relaxation and social attribute for the bridge. After the completion of the bridge, tourists pass through the greenway, stay on the bridge and sit in pairs. At night, a group of people often sit on the bridge to relax and enjoy the beauty of the wetland park, making the bridge the most popular social space in the park, and the bridge itself has become a landscape in the park.
▼适合人体尺度的景观座椅，a landscape seat suitable for human body size
▼长3米的玻璃钢垫板，3-metre-long FRP base plate
▼桥上望向水道，view from the bridge to the river
In the construction, parameter modeling is adopted, BIM information is used to breakdown components, and modularized components are generated by parameter laying-off. All components are prefabricated in the factory, which makes the bridge with a slightly complex shape convenient to process and install and meets the urgent construction schedule requirements. Finally, it took only 27 days from the designing to the completion of the bridge.
▼桥下瀑布景观，cascade under the bridge
Project Name: Shenzhen Hetang Wetland Park footbridge
Company website: http://sstr.cscec.com/
Contact e-mail: email@example.com
Project Design & Completion Year: 2019
Leader designer & Team: Kuang Wei, Chen Yang
Project location: Hetang Wetland Park, Kuiyong Street, Dapeng New District, Shenzhen
Cross Built Area: 30 m2
Photo credits: Kuang Wei, Chen Yang
Client: Bureau Public Works of Dapeng New District, Shenzhen