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CCDI21设计工作室：面朝大海的环形城市观景台，位于深圳市南山区的滨海中心地带，南临滨海活动草坪，北靠市民公共停车场，东侧为市民的智能健身区，西侧为景观树阵与硬地广场，掩映在深圳湾公园约13公里长的滨海景观带中，坐拥便利的交通和良好的滨海景观。作为一座在原址拆除重建的公共建筑，基本功能包含全天候对公园游客开放的公共卫生间和冲凉室等，是对于深圳湾公园海风运动广场公厕的公益性设计提升，自 2023 年5月1日起开始服务周边市民及来访游客。
CCDI GROUP 21 STUDIO: The circular city observation platform facing the sea is located in the coastal center of Nanshan District, Shenzhen. It is adjacent to the coastal activity lawn in the south, the public parking lot in the north, the intelligent fitness area for citizens in the east, and the landscape tree array and hard ground square in the west. It is set off in the coastal landscape belt of Shenzhen Bay Park about 13 kilometers long, with convenient transportation and good coastal landscape. As a public building demolished and rebuilt at the original site, its basic functions include public toilets and shower rooms that are open to tourists in the park all day long. It is an improvement of public welfare design for the public toilets in Haifeng Sports Square of Shenzhen Bay Park, and has served the surrounding citizens and visitors from May 1, 2023.
原状分析 Analysis of the original state
① The original public toilet building had a thick and heavy image, which was not compatible with the coastal landscape .
②Unreasonable functional streamline: Male and female toilets shared the same channel for entry and exit, making it inconvenient to use in parks with high pedestrian flow.
③The internal walkway of the toilet was narrow, the facilities were rudimentary, and the hygiene facilities were insufficient. Among them, there were 8 male restroom slots and 6 urinal slots; 13 female toilet slots; There was no third bathroom or mother and baby room. According to staff reports, there was a high flow of people in the park, and the phenomenon of long queues in women’s toilets often occured.
④Lack of humanistic care: Although the original building had partially elevated spaces, it did not provide any facilities and space for tourists, cleaning workers, or park staff to rest.
设计目标 Design objectives
In response to the problems existing in the original public toilets, we propose several requirements for the new design:
① Combining the characteristics of the site and integrating the building into the environment.
② Based on the needs of tourists, increase toilet spaces and provide more services such as showers, third bathrooms, and mother and baby rooms.
③ Change the traditional impression of public toilets and provide citizens with a people-oriented resting place.
▽项目与周边环境鸟瞰 Aerial view
▽融入周边公园的公厕建筑 Integrate into the surrounding park public toilet building
活力之环 The Ring of Vitality
The project responds to the openness of the site with a circular ring, making it convenient for people entering from all directions to use the building and promoting a sense of closeness between the building and the environment. Surrounding the circular space, a men’s restroom is arranged on the east side and a women’s restroom is arranged on the west side, with the number of women’s restroom slots increased to 22; On the east side of the landscape axis is the shower function group, while on the west side of the landscape axis is the mother and baby room, third bathroom, sanitation worker lounge, and tool room function group.
▽融入环境的公厕鸟瞰图 Aerial view
▽圆环鸟瞰 Aerial view
▽开放性的活力之环 Open ring of vitality
The circular corridor connects various functions to form a simple and effective layout. In addition to meeting basic toilet functions, it also creates a gray space for tourists to rest and wait, while integrating the building roof as a green space with the environment. On this basis, through changes in roof slope, tourists can climb up the stairs, listen to the wind, and view the sea.
▽供游客休息等候的环廊 A circular gallery for visitors to rest and wait
▽屋面观景台 Roof viewing platform
檐下廊与半亩园 Eave corridors and courtyards
The profound horizontal eaves form a 2.4-meter-wide circular corridor on the outer side of the circular ring, and the blank spaces between various functional groups form a frame landscape, creating a coherent and transparent gray space together. During peak toilet hours, people can queue around the circular corridor to avoid exposure to sunlight and rain. At the same time, the chairs growing from the wall under the eaves corridor facilitate people’s rest and waiting. In leisure time, they can sit and enjoy the surrounding scenery while blowing the sea breeze.
▽檐下廊与半亩园 Eave corridors and courtyards
The circular courtyard surrounded by the center has a diameter of about 18 meters and opens to a green lawn, forming a huge framed view in the sky, where blue sky, white clouds, green trees, and birds can be seen. The circular courtyard is also suitable for children to run and play, and the 1.2-meter-wide circular corridor on the inner side allows parents to watch out under the corridor, providing an open and easy to take care of activity space for children and parents.
▽圆形中心庭院 Circular central courtyard
城市甲板——深圳湾畔的环形城市观景台 Circular city observation platform in Shenzhen Bay
The wooden steps that climb up the stairs should be made as gentle as possible, which is beneficial for citizens to walk comfortably. Reeds are planted on both sides of the steps and observation platform, keeping people in a green atmosphere during the viewing. At the same time, green roofs provide a good “fifth facade” landscape for the city, effectively regulating the overall microclimate of the plot.
▽舒缓的木制台阶拾级而上 Soothing wooden steps ascend the stairs
The circular city observation deck facing the sea has become an excellent city observation spot for citizens to “view the sea from Jieshi to the east”, and is a place for group photos and check-in; It also provides a natural urban stand for the grassland sports field on the seaside, providing a good starting point for the annual Spring Festival welcome run, without the need to build a temporary starting point; It provides a good public place for urban public activities such as music festivals.
▽观景台 Viewing platform
立面材料控制 Facade Materials
The design hopes that the building will disappear in the environment, rather than become the protagonist on the site. In terms of facade tone, natural and simple plain concrete is undoubtedly a good choice, allowing the building to blend in with the environment with a humble attitude. However, during the deepening process of the plan, considering the construction difficulty and cost control of the project, dry hanging plain concrete slabs were used to replace it, which is also convenient for later maintenance and upkeep. In the men’s and women’s restrooms, the hand washing area and high windows are decorated with wooden louvers to ensure natural ventilation and to a certain extent block the view. At the same time, the wooden color can also add a touch of familiarity to the gray plain concrete.
▽自然质朴的清水混凝土立面为主调 Natural and rustic facades of fair-faced concrete
▽公厕内部 Inside the public toilet
使用后评价与反思 Evaluation and Reflection
Transforming passive traditional public toilets into active urban public spaces, providing citizens with a people-oriented resting place, the new building has achieved the initial design concept. After the building was officially put into use and combined with the on-site usage situation, we found several issues that need to be reflected on and improved:
① seats can be appropriately added to the eaves gallery and roof platform of the inner courtyard to facilitate citizens’ rest and observation;
② At the beginning of the design, the treatment of the roof was more in accordance with the needs of the body, without setting up ramps. It was found that some parents were pushing strollers to the roof observation platform, and in the later stage, ramps should be added on the steps to facilitate parents or disabled people with babies to reach the top;
③ In order to create a sense of floating, the height of the protruding seat is 600, which is not convenient for children to use in terms of scale;
④ Roof greening did not adopt drip irrigation according to the design, which is inconvenient for later maintenance;
⑤ The internal and external drainage ditches on the roof are not protected on the ground, making it easy for children to play on them, posing a safety hazard.
▽夜景下的建筑 Buildings at night
Watching the sea with the wind, spring flowers bloom. The circular urban observation deck integrates into the park environment, changing the traditional impression of public toilets, providing citizens with a humanized resting place, and also providing citizens with an excellent sea view resort. At the same time, it provides a natural urban stand for the sports ground and lawn on the south side of Haifeng Sports Square. Thank you to everyone involved in this public welfare project for their selfless help and strong investment, regardless of gain or loss.
▽首层平面图 Ground floor plan
▽立面图&剖面图 Elevation & Section
灯光设计：HDA 胡燕凯 李金凤 邓超冰
Project name: Design of Public Toilet in Shenzhen Bay Haifeng Sports Square
Completion Year: 2023.04
Project location: Nanshan District, Shenzhen City, Guangdong Province
Owners：Shenzhen Park Management Center
Constructing units:Bureau of public works of Shenzhen municipality
Architectural and Interior Design: CCDI GROUP 21 STUDIO
Principal Architect: Lang Wang,Yuming Li,Hao Wu
Lighting design: HDA:Yankai Hu,Jinfeng Li,Chaobing Deng
Preliminary design:SZAD:Yi Xin,Xun Zhang,Zhi Xiong,Cihang Liu,Zhike Ouyang,Yuanding Xiao,Xiaolin Li,Fangjian Zhou,Hao Tang,Xin Xia,Hongzheng Chen,Yingying Ma,Peng Huang,Wuyang Shi,Jian Huang,Ji Zhang,Yifeng Jiang,Tianzhen Lin
Construction drawing design: GUANGDONG HUADINGXINWEI Design Engineering CO.,LTD.
Dazhi Liu,Limin Qiu,Yixin Chen,Chanchao Wang,Wu Li,Xupeng Zheng,Zhongxing Xie,Liang Hong,Guotao Ni
Constructing units: Shantou Construction Engineering Co., Ltd
Photographer: TAL、Longyi Yan、Althea Kang
Writing:Lang Wang,Yuming Li
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