Parameters affecting the dynamic lateral pressure on a column supported silo under earthquake based on the extend-D-P model

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (6) : 213-222.

EARTHQUAKE SCIENCE AND STRUCTURE SEISMIC RESILIENCE

Parameters affecting the dynamic lateral pressure on a column supported silo under earthquake based on the extend-D-P model

XU Qikeng1,ZHANG Zhenqian1,LIU Qiang*1,WANG Likun2,LI Liang3

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Abstract

The dynamic interaction between silo structures and grain particles under seismic loading induces dynamic overpressure, which poses a significant safety concern for silos. To address this, a finite element model of a column-supported silo and grain particles was developed based on the extended Drucker-Prager (D-P) model. Vibration table experiments were conducted to validate the dynamic lateral pressure results through comparative analysis. A full-scale silo finite element model was further constructed to examine the influence of various grain parameters on dynamic lateral pressure, with a gray relational analysis performed.Results demonstrate that the extended D-P model effectively captures the trend of dynamic lateral pressure changes, validating the FEM's accuracy.The impact of friction coefficient on dynamic lateral pressure was found to vary with silo height, while the elastic modulus showed the strongest correlation. This study clarifies the mechanisms by which grain parameters affect dynamic lateral pressure and provides valuable insights for selecting parameters in numerical simulations and seismic design of silo structures.

Key words

column-supported silo / finite element model / grain particles / Drucker-Prager model / dynamic lateral pressure

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XU Qikeng1, ZHANG Zhenqian1, LIU Qiang1, WANG Likun2, LI Liang3. Parameters affecting the dynamic lateral pressure on a column supported silo under earthquake based on the extend-D-P model[J]. Journal of Vibration and Shock, 2025, 44(6): 213-222

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