Recently, the China Construction Industry Association announced the "2022 2023 Second Batch of China Construction Engineering Luban Award (National Quality Project) Selected Project List", and the Quzhou Sports Center Project - Stadium and Ancillary Facilities Project, which was constructed by Shanghai Baoye Group and participated by Shanghai Baoye Architectural Decoration, was on the list. Let's take a look at this today"The largest area of fair-faced concrete structure in Japan" is simple and magnificent!
Quzhou Sports Center project is located in the core location of Happy Sports Town, Kecheng District, Quzhou City, Zhejiang Province, and is the main venue of the 4th Zhejiang Sports Conference. With a total construction area of about 90,000 square meters and 30,000 seats, the project brings together the largest area of fair-faced concrete structure in China, the first double-layer membrane structure system stadium in China, and the world's largest earth-covered building complex.
The substructure of the 30,000-seat stadium contains 60 large-section load-bearing fair-faced concrete special-shaped wall columns, 8 multi-curvature special-shaped entrances and exits and umbrella columns, and the fair-faced concrete development area is 1450,000 square meters, is the largest area of clear water structure in China. In some areas, fair-faced concrete requires a wood grain effect, and the fair-faced concrete is marked with C50, natural texture and color.
First, simple and magnificent. In June 2023, the fair-faced concrete of the stadium won the "Gold Award of the China Concrete Competition", reflecting the highest level of decorative (fair-faced) concrete architectural design in China.
Technical research. Shanghai Baoye carries forward the spirit of "ingenuity", actively innovates, explores deeply, establishes a fair-faced concrete technology research and development team, organizes and carries out technical research on the construction of spatial special-shaped fair-faced concrete, and ensures the perfect presentation of the fair-faced concrete of the project.
Fair-faced concrete material trial.
Carefully select high-quality resources, carry out research on the mix ratio of fair-faced concrete, carry out multiple rounds of fair-faced concrete mix tests, and finally find the material mix ratio suitable for this project. And the test block was made to compare the color, strength, and workability, and complete the preliminary confirmation of the effect of clear water.
Experimental study on the mix ratio of fair-faced concrete materials and confirmation of the effect of test blocks.
Fair-faced concrete straight wall test wall production.
According to the requirements for confirming the effect of the fair-faced concrete test block, a four-section fair-faced concrete straight wall test wall was made to confirm the detailed treatment practices such as the color, mix ratio and butt bolt holes of the fair-faced concrete.
Fair-faced concrete straight wall test wall production.
Special-shaped fair-faced concrete 1:1 test section production.
A representative special-shaped fair-faced concrete sheet wall was selected to make a 1:1 test section, and the research on the support system of fair-faced concrete formwork, the production of special-shaped fair-faced concrete components, the detailed treatment method of fair-faced concrete, and the construction organization and management measures of fair-faced concrete were carried out.
Special-shaped fair-faced concrete 1:1 test section.
The series of tests from materials to test blocks, test pieces and proportional test sections fully verify the effectiveness of technology, quality and construction management, objectively and accurately find the problems that may occur in the construction process, and provide a sufficient basis for the subsequent construction of the project.
Key technologies. Design method of high-grade load-bearing fair-faced concrete mix ratio.
Reasonable concrete material ratio is the basis for ensuring the pouring effect and quality of fair-faced concrete. Through the integration of high-quality material resources, this project studies the mix ratio of fair-faced concrete, controls the material quality and technical parameter requirements, standardizes the key performance indicators of concrete, and forms a load-bearing fair-faced concrete mix ratio design scheme that can meet the strength and workability requirements of construction conditions.
Concrete poured on site.
Space special-shaped fair-faced concrete formwork and support system.
The formwork is the key to ensure the surface effect of fair-faced concrete, and the support is the key to ensure the spatial modeling of the special-shaped structure. Starting from the forming effect of fair-faced concrete, this project has developed a spatial special-shaped fair-faced concrete formwork and support system after the comparison of the effect of the test section. It can not only ensure the surface effect of fair-faced concrete, but also ensure that the spatial surface shape is maintained during the concrete pouring process.
Special-shaped formwork and support.
Umbrella column formwork installation.
Entrance and exit fair-faced concrete formwork.
Digital processing technology of special-shaped template.
In the construction process, in order to ensure the processing efficiency of the special-shaped template and increase the utilization rate of the template, the processing of the template panel and the back flute is completed by digital method. The customization, standardization and visual processing of the template are realized, which not only meets the requirements of the space special-shaped surface, improves the processing accuracy of the template, but also improves the processing efficiency and utilization rate of the template through the digital and visual arrangement of the template.
Digital design and processing.
The production method of tall load-bearing special-shaped fair-faced concrete components.
The fair-faced concrete components in this project are large in size, complex in spatial modeling, and complex in the dense arrangement of steel bars, making it difficult to make components. During the implementation process, the project team studied the processing, positioning and installation of the component formwork system, the processing and positioning of arc steel bars, the pouring method of fair-faced concrete, and the repair method of surface defects of fair-faced concrete, and formed a scientific, reasonable and operable production method of tall special-shaped load-bearing fair-faced concrete components.
BIM assists in the deepening of the reinforcement arrangement.
On-site rebar binding and concrete pouring.
Fair-faced concrete detail effect treatment method.
In view of the open joints, Zen joints, yang angles, bolt holes and other parts of fair-faced concrete, a complete set of fair-faced concrete effect guarantee methods have been studied, and the arc-shaped open-seam yangjiao repair tool, bolt hole treatment method, wood grain fair-faced concrete surface repair and protection method, fair-faced concrete component finished product protection method, etc., make the repair of fair-faced concrete fast and efficient, and also ensure the visual effect of fair-faced concrete surface.
The bolt opening plugging effect test confirmed.
Finished product protection and wood grain restoration of clear water column corners.
Construction effect. The stadium was filmed in real time.
Filmed on the wall. Filmed on the wall.
Filmed on the wall. Filmed on the wall.
Filmed on the wall. Filmed on the wall.
Filmed on the wall. Real photos at the entrances and exits.
Real photos at the entrances and exits.
Real photos at the entrances and exits.
Real photos at the entrances and exits.
Real shot of the umbrella column at the entrance and exit.
Real photos at the entrances and exits.
Real shot at the entrance and exit (night view).
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