The lateral pressure on the silo wall is an important parameter in the seismic design of squat silos.However,no precise theoretical calculation formula exists in current codes or the ex-isting literature.This study aims to derive a new formula for calculating the seismic lateral pres-sure on squat silos under flat and conical stack conditions.Initially,using the limit equilibrium method,the silo was regarded as a special curved retaining wall,with the sliding wedge unit be-ing the primary focus of the analysis.Then,the pseudo-static method and the rotating seismic an-gle method were used to simplify the seismic forces and perform the limit equilibrium analysis.The calculation formula for seismic lateral pressure was derived for flat and conical stack condi-tions.Finally,measured data and theoretical calculation values of seismic lateral pressure under full load conditions were compared through an example analysis,which initially verified the accu-racy of the proposed formula.The results from numerical simulations and parametric analysis in-dicate that the calculation model fits effectively,and the friction of the silo wall must not be ig-nored due to its considerable influence.In addition,for large-diameter squat silos under flat stack conditions,changes in the radius have minimal influence on seismic lateral pressure,allowing the squat silo to be simplified as a linear retaining wall.These research results provide a valuable ref-erence for improving the calculation of seismic lateral pressure in silo design specifications.
维普
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