超低温LNG储罐外罐穹顶混凝土保压浇筑施工技术

Construction Technology of Outer Tank Dome Concrete Pressurization Pouring of Ultra-Low Temperature LNG Storage Tanks

实现碳达峰、碳中和是党中央的重大战略决策,这也是中国贡献力量应对全球气候变化的具体行动。在“十四五”时期,我国新能源将呈现跨越式增长态势,这将为实现碳达峰、碳中和提供强有力的支撑。因此,本文研究采用罐体内部保压、分圈不分层的浇筑方法可有效提升穹顶混凝土结构的整体性和抗震性能。这一工法在实际工程中得到了成功应用,不仅保证了LNG储罐的安全运行,还为后续类似工程提供了重要的参考。

Achieving peak carbon dioxide emissions and carbon neutrality is a major strategic decision of the Party Central Committee,and is also a concrete action of China contributing to global climate change.During the“14th Five-Year Plan”period,China’s new energy will show a leapfrog growth trend,which will provide strong support for achieving peak carbon dioxide emissions and carbon neutrality.Therefore,this paper studies that the pouring method of internal pressurization and cycling but non-layering of the tank can effectively improve the integrity and shock resistant performance of the dome concrete structure.This method has been successfully applied in practical projects,which not only ensures the safe operation of LNG storage tanks,but also provides an important reference for subsequent similar projects.