超大容积LNG储罐桩基础方案优化设计分析

Optimal Design Analysis of Pile Foundation Scheme for Ultra-large Volume LNG Storage Tank based on Seismic Response

超大容积LNG储罐结构自重大,安全等级高,具有冷量逸散需求,通常采用高承台群桩基础。桩基础将上部结构荷载传递到地基中,对结构安全稳定具有重要意义。基于储罐结构特点和地震响应分析结果,建立结构力学分析模型,对比分析不同基础方案的安全稳定性和经济性。研究结果能够对超大容积LNG储罐桩基础方案设计提供有益的参考。

The ultra-large volume LNG storage tank has a heavy structure,high safety level,and needs for cooling energy dissipation,and usually adopts a high-cap pile group foundation.The pile foundation transfers the superstructure load into the foundation,which is of great significance to the safety and stability of the structure.Based on the structural characteristics of the storage tank and the analysis results of seismic response,a structural mechanics analysis model was established to compare and analyze the safety,stability and economy of different basic schemes.The research results can provide useful reference for the design of pile foundation scheme of super-large volume LNG storage tank.