基于扩展D-P的粮食筒仓地震作用下动态侧压力影响参数研究

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (6) : 213-222.

地震科学与结构抗震

基于扩展D-P的粮食筒仓地震作用下动态侧压力影响参数研究

许启铿1，张振乾1，刘强*1，王丽坤2，李亮3

作者信息 +

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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文章历史 +

摘要

地震作用下，筒仓结构与粮食颗粒的动力相互作用引起的动态超压是筒仓结构安全的重要问题。为此，基于扩展的Drucker-Prager模型的（扩展D-P模型）颗粒本构，建立了柱承式筒仓-粮食颗粒有限元模型，并结合开展的振动台试验对动态侧压力进行对比分析和验证，进一步构建实仓有限元模型，研究多种粮食参数对动态侧压力的影响规律，并进行了灰色关联分析。结果表明：基于扩展D-P模型的有限元模型能够反映筒仓粮食动态侧压力的变化趋势，验证了有限元模型的合理性；摩擦系数对动态侧压力的影响与所处高度相关；弹性模量对动态侧压力的关联度最大；研究揭示了地震作用下粮食参数对动态侧压力的影响机理及参数影响关联性，为筒仓-粮食颗粒动力问题数值模拟的参数选取提供了借鉴，也为筒仓结构抗震设计提供参考。

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.

导出引用

许启铿1, 张振乾1, 刘强1, 王丽坤2, 李亮3. 基于扩展D-P的粮食筒仓地震作用下动态侧压力影响参数研究[J]. 振动与冲击, 2025, 44(6): 213-222

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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