Giant Inflatable Dome Shields Jinan City from Pollution

A vast 20,000-square-metre inflatable dome has been erected over a major construction site in Jinan, China, in a bid to shield nearby communities from dust and noise.

The striking white structure, described as “marshmallow-like”, now covers the Honglou 1905 urban renewal project, the largest of its kind in Jinan city, home to more than nine million people. 

The project is located in a busy commercial district, just across the road from schools, residential buildings and a century-old church, raising concerns over potential disruption.

To ease those concerns, China Energy Construction Group and Licheng Urban Development Group covered the site with a 50-metre-high dome made of durable, reflective polyvinylidene fluoride (PVDF). The developers say the structure, measuring 159 metres long and 108 metres wide, is the “largest inflatable dome in the world”.

The base is reinforced concrete, topped with an air-supported membrane, with access points for pedestrians, vehicles, and emergencies – leaving the interior column-free for construction work.

The developers claim the dome is highly effective in reducing environmental impact. According to their data, it can “block 90 per cent of dust, reduce 80 per cent of construction noise, and prevent wind, rain and snow.” The design also ensures year-round work, even during Jinan’s rainy season, and is built to endure half a metre of snow and gale-force winds up to level 12.

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Project leader Wang Luren emphasised the protective features: “The control system in the air dome will monitor the internal air pressure and temperature at any time. Through the four large-volume fans on the north side, fresh air will be continuously supplied to the interior for ventilation. Sprinkler facilities will be installed to control dust in the air dome.”

He also pointed to the safety aspects of the chosen material: “The air dome uses a new material, PVDF, which can block 90 per cent of ultraviolet rays, has a high heat reflectivity and heat dissipation rate, and has a B1 (flame-retardant) fire rating.”

The dome, manufactured by Xide Air Dome, was officially installed on 14 June. It will be dismantled once the project is complete, though developers suggest the technique could become a model for future city-centre builds. 

They described it as a potential “‘silent mode’ solution for urban construction”.

While inflatable domes rarely cover building sites, the concept of inflatable architecture has gained attention in recent years, with experimental projects including a pop-up restaurant and the Swiss pavilion planned for Expo 2025 in Osaka.

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