Urban Park Micro Renovation / Atelier cnS + School of Architecture, South China University of Technology

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Urban Park Micro Renovation / Atelier cnS + School of Architecture, South China University of Technology

Hui Pavilion.  Image © Siming WuFlower pavilion.  Image © Siming WuFlower pavilion.  Image © Siming WuHui Pavilion.  Image © Siming Wu+ 36

Text description provided by the architects. In early June 2019, cn ° S completed the Changqi Bamboo Corridor Project and the Huanglong Waterfront Bamboo Corridor Project. In September 2020, at the request of the Beijiao city government, cn ° S designed two art installations in the Xianmo Flower Field landscape park to improve the environment of the park. After completing the projects from Changqi Bamboo Corridor to Huanglong Waterfront Bamboo Corridor, then Flower Pavilion and Embrace Pavilion in Xianmo Flower Field Landscape Park, cn ° S has completed the iteration and evolution of the bamboo structure from 1.0 to 4.0 in terms of form logic and construction details.

Hui Pavilion.  Image © Siming Wu
Hui Pavilion. Image © Siming Wu
Flower pavilion.  Image © Siming Wu
Flower pavilion. Image © Siming Wu

Integration of structure and form
The design of the bamboo art installation is derived from the excellent tensile and bending properties of bamboo itself, and the bent bamboo itself can naturally form a three-dimensional enclosure of the space, which could provide shading and shadows. This in turn would create a “gray space” which could not only provide shelter from sun and rain, but also improve ventilation and heat dissipation in the subtropical climate. Based on such a basic concept, we first obtained a basic “shell-shaped” model. which is the most active space in the village. In version 2.0 of the Huanglong Waterfront Bamboo Corridor, by deforming 5 shells in two directions to deform them and reconnect them, we create a shelter between the village square and the stream, which could serve as both the square and the river. ‘rest area in the water observation deck. In versions 3.0 and 4.0 of Flower Pavilion and embracing Pavilion in Xianmo Flower Field, we have created more possibilities of different status for the use of space by enriching the use of the shell shape.

Hui Pavilion.  Image © Siming Wu
Hui Pavilion. Image © Siming Wu
Hui Pavilion.  Image © Siming Wu
Hui Pavilion. Image © Siming Wu

Improved space and function
Located in the center of Beijiao, Xianmo Flower Field is a civic park with flowers as a theme. Large areas of seasonal flowers are planted throughout the year and the flowering time is magnificent. However, due to the lack of shading, there is no place for tourists to rest and stay, which has led to the extremely low rate of use of the park. Therefore, it was only in the evening that people gathered in the park and most of the time people visited the park without stopping. Therefore, improving the service facilities became the main objective of the design, with the aim of improving the satiability of the park, lengthening the service life and increasing the rate of use of the field. of flowers of Xianmo.

perspective section of the Hui pavilion
perspective section of the Hui pavilion
Hui Pavilion.  Image © Siming Wu
Hui Pavilion. Image © Siming Wu

We hope to provide residents with a sheltered space by placing two sets of landscaped bamboo pavilions. At the same time, it can not only organize small events, enrich the tourist experience and see the waterfront. In turn, it would become a landscape of landmarks with composite functions. As an independent landscape structure, the bamboo pavilion offers a rich spatial experience and an iconic image. On the other hand, it blends in with the surrounding environment and serves as a resting service for observing flowers during the flowering season.

Flower Pavilion and Hui Pavilion.  Image © Siming Wu
Flower Pavilion and Hui Pavilion. Image © Siming Wu
Flower pavilion.  Image © Siming Wu
Flower pavilion. Image © Siming Wu

As versions 3.0 and 4.0 of the bamboo pavilion, the flower pavilion and the embrace pavilion continue the basic logic of combining the “shell-shaped” shape based on Changqi’s bamboo hallway design and from the bamboo corridor of the Huanglong waterfront. The spiral line is used as the loft control line to form the rhythm of the flower pavilion structure which could create a spatial hierarchy full of changes. The Embrace pavilion consists of two inverted shell shape groups connected end to end to form a closed loop. Three-dimensional bidirectional curved surfaces cantilever over the structure to achieve a span of 12 m. Through the change of scale of the form, a large-scale stage space is created and a small-scale waterside viewing space is formed and it has created a dramatic spatial twist in the transition between the two.

perspective section
perspective section
Flower pavilion.  Image © Siming Wu
Flower pavilion. Image © Siming Wu

Materials and tectonic details
The bamboo frame material continues the construction logic of the whole series, adopting a curved cantilever bamboo to form a shell shape, which is combined with traditional bamboo weaving techniques, and the covering roof is woven with strips of bamboo covered with bark palm. Because the roof is translucent, the light and shadow under the roof show the beauty of the bamboo structure. The application of palm bark, inspired by the straw rain coat, is a major advance in the structure of the bamboo pavilion.

Construction process.  Image © cnS
Construction process. Image © cnS
material manufacturing.  Image © cnS
material manufacturing. Image © cnS

As a traditional material for making clothing, palm bark has two important properties: weather resistance and resistance to rain. With the development of modern materials, the traditional straw rain cape is gradually replaced by plastic raincoats, and the palm bark used as a raw material has gradually become unpopular. Based on the experience of building the bamboo pavilion before, we decided to use palm bark, an environmentally friendly material with excellent weather resistance and easy access, as the skin of the bamboo pavilion. The use of palm bark further improves the weather resistance of the bamboo pavilion. The palm roof made of similar modules also creates a sense of rhythm similar to the traditional tiled roof. At the same time, we also replaced the original hemp rope with coconut rope to achieve better weather resistance as a material for tying bamboo.

Hui Pavilion.  Image © Siming Wu
Hui Pavilion. Image © Siming Wu
Hui Pavilion.  Image © Siming Wu
Hui Pavilion. Image © Siming Wu

Palm bark uses the traditional method of securing the coconut rope seam. Since a single piece of palm bark can only cover a small area, it is very laborious to use the one-piece one-piece fastening method as the traditional tiled roof fastening method. For this reason, we have adopted a modular prefabrication method. First, all palm bark is prefabricated and sewn into modular units of 1m * 1m, then these units are connected and trimmed to form the roof.

Flower pavilion.  Image © Siming Wu
Flower pavilion. Image © Siming Wu

Surprising gains
After we proposed to use palm bark as the roofing material for the bamboo pavilion, construction manager Fang Chun found that this material was everywhere in his hometown of Hubei. . The villagers who remained in the village participated in the production and processing of palm bark and coir ropes. With the processing of materials at the place of origin, it brought about the cause of poverty reduction in the local villages. A bamboo pavilion thousands of kilometers away can produce such social benefits in the area and help revitalize the village. It is indeed beyond our expectations.

model generation
model generation

The breeze pavilion
In addition to the bamboo pavilion, in the Xianmo Flower Field project, we also tried to build a steel art installation to activate the use of space. The Breeze pavilion adopts simple t composition logic, which uses an elliptical interface to rotate around the axis and form a channel space. By arranging the pavilion on the only path that needs to be past the flower field, you can naturally feel the change in light and shadow and the twist of space as you walk through the hallway, which could leave a deep impression. The use of wind chimes further enhances the interactivity of the pavilion. Visitors are unwittingly drawn to the wind chimes as they pass through the pavilion, and they activate the wind chimes to create a beautiful soundstage.

flag breeze.  Image © Siming Wu
flag breeze. Image © Siming Wu
flag breeze.  Image © Siming Wu
flag breeze. Image © Siming Wu

After completion
After the completion of the bamboo pavilion, everyone rushed to take a group photo in the bamboo pavilion. Various activities were carried out under the bamboo pavilion: observation and rest, parent-child entertainment, fitness, photo taking, therefore, Xianmo flower field gained popularity. He also held the 2021 Beijing City Cultural and Sports Activities Launch Ceremony and other activities. Each one defines and interprets the story and the scene in the space, which helps to strengthen the relationship between them.

Hui Pavilion.  Image © Siming Wu
Hui Pavilion. Image © Siming Wu


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