Under the background of the national “double carbon” strategy, this technological innovation achievement has better handled the cold bridge problem of the steel column base, which is particularly important to realize the energy conservation and emission reduction of the whole cold storage building, and has certain social significance.
This construction technology has won the title of “technical innovation achievement” of Shanghai Metal Structure Industry Association in 2021.
Knowledge is wealth, innovation and development respect knowledge, advocate science and keep pace with the times in recent years, with the development of domestic cold chain logistics market, cold storage has gradually become a new development direction in China’s construction field.
Effectively extending the life cycle of the cold storage..
The steel column foot node is complex, so the cold bridge treatment of the outer steel column foot node is one of the key construction technologies of the steel structure cold storage building.
The steel column is rooted in the underground reinforced concrete foundation, and the thermal conductivity of the steel structure is large, thus forming a “cold bridge”.
This technical innovation achievement solves the problem of increasing the cold consumption of the cold storage caused by the cold bridge and wasting the cooling energy.
As a large user of electricity, the cold storage saves a lot of electricity.
For this reason, the general building relies on the technology and practice of the construction of the freezing (storage) warehouse project for many years.
At present, most of the main structures of the cold storage in China use steel structures, and all the connection joints of the cold storage must consider the problem of cold proof bridges, including the steel column column foot joints.
Through the in-depth study of the cold proof bridge node at the column bottom, the cold bridge problem of the anchor bolts at the steel column base is solved from the material selection performance and node optimization, and the “construction technology of cold proof bridge at the steel column base of the cold storage steel structure” is formed.
This achievement innovates the use of high-strength polyurethane insulation ring, which not only prevents the cold bridge from occurring, but also relies on its high compressive strength to ensure the safety of the main structure of the cold storage building.
At the same time, frost condensation and dew condensation at the cold bridge are avoided, and the serious damage caused by frost condensation and dew condensation to the thermal insulation mechanism, waterproof, moisture-proof and steam insulation structures in the cold storage for a long time is solved, even the overall structure of the cold storage building is damaged.
