Buoyancy Analysis for Buried Silo in Sandy Stratum Under Overlying Surcharge Load
WU Qiang
ZHANG Qiang
ZHOU Yang
SONG Ming
WANG Kai
Abstract：Henan is one of the three major grain producing areas in China,and the realization of large-scale green grain storage is beneficial to the country and the people.The underground or semi-underground grain storage has the advantages of large reserves and low temperature,which is one of the ideal types of green grain storage,but the anti-floating design of underground massive structure is prominent.This study focuses on the buried cylindrical silo as the research object,conducts model experiments and theoretical research with considering the overlying load around the silo,and analyze the buoyancy reduction coefficient corresponding to the critical state of the silo floating by theoretical inversion.The research indicates that as the uniformly distributed load around the silo continues to increase,the lateral friction resistance of the silo wall to the soil also gradually increases,which inhibitis the upward flotation of the silo.Additionally,there is a certain reduction of buoyancy in soil.In saturated coarse sand,the estimated buoyancy reduction coefficient is 0.945.Increasing the overlying load can enhance the design potential of the buried depth of silo and provide greater possibilities for low-temperature and green grain storage.
Keywords：Model testBuried siloBuoyancyReduction factorOverlying load
Publication Date：2024-03-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 126-132 )