筒仓的动力计算
|
摘要
计算地基运动时筒仓的动力响应 ,考虑了仓内散粒体与仓壁的相互作用。根据实验观测到的现象 ,将仓内上部占总质量 2 0 %～ 3 0 %的散粒体处理为几个集中质量并将其分别与仓壁均匀弹性连接 (弹性杆只承受压力而不承受拉力 ) ,分析地基运动时筒仓的动力响应 (仓壁位移值 )并与筒仓模型实测值进行了比较 ,两者结果吻合较好
The paper calculates the silo's dynamic response when foundation moves and takes consideration of the interaction between bulk solid and the silo wall. Based on the phenomena observed in the experiments, the paper supposes that several concentrated masses are equivalent to the bulk solid in the upper part of the silo whose mass is up to 20～30 percent of the total mass and each of the concentrated masses is connected in uniform with silo wall during which elastic trusses only bear press rather than pulling, The paper finds that silo's dynamic response (displacement of the silo wall) when foundation moves nearly resembles to that of testing results after comparison.
The paper calculates the silo's dynamic response when foundation moves and takes consideration of the interaction between bulk solid and the silo wall. Based on the phenomena observed in the experiments, the paper supposes that several concentrated masses are equivalent to the bulk solid in the upper part of the silo whose mass is up to 20～30 percent of the total mass and each of the concentrated masses is connected in uniform with silo wall during which elastic trusses only bear press rather than pulling, The paper finds that silo's dynamic response (displacement of the silo wall) when foundation moves nearly resembles to that of testing results after comparison.
引文
[1] (GBJ117-88)工业构筑物抗震鉴定标准,工程建设规范汇编45,结构设计与施工规范[S].北京:中国建筑工业出版社,1992.
[2] 马英儒.筒仓抗震验算的简化方法[J].工程抗震,1988,(2):20—22.
[3] 施卫星,朱伯龙.地震动下煤仓贮料侧压力研究[J].特种结构,1993,(1):16—18.
[4] PeterKnoedel,ThomasU mm enhofer,UlrichSchulz.On the m odelling of different types of imperfections insilo shells[J].Thin- walledStructure,1995,23:283—293.
[5] 黄 义,尹冠生,等.不同地基条件下筒仓的振动实验研究[A].黄文虎,闻邦春:第七届全国振动理论及其应用学术会议论文集[C].上海:同济大学出版社,1999.
[6] 赵衍刚,吉田顺.振动时筒仓中散粒体流动状况的仿真[J].地震工程与工程振动,1993,13(3):17—27.
[7] 居荣初,曾心传.弹性结构与液体的耦联振动理论[M].北京:地震出版社,1983.
[8] ΓК·克列因,陈万佳.散粒体结构力学[M].北京:中国铁道出版社,1983
[2] 马英儒.筒仓抗震验算的简化方法[J].工程抗震,1988,(2):20—22.
[3] 施卫星,朱伯龙.地震动下煤仓贮料侧压力研究[J].特种结构,1993,(1):16—18.
[4] PeterKnoedel,ThomasU mm enhofer,UlrichSchulz.On the m odelling of different types of imperfections insilo shells[J].Thin- walledStructure,1995,23:283—293.
[5] 黄 义,尹冠生,等.不同地基条件下筒仓的振动实验研究[A].黄文虎,闻邦春:第七届全国振动理论及其应用学术会议论文集[C].上海:同济大学出版社,1999.
[6] 赵衍刚,吉田顺.振动时筒仓中散粒体流动状况的仿真[J].地震工程与工程振动,1993,13(3):17—27.
[7] 居荣初,曾心传.弹性结构与液体的耦联振动理论[M].北京:地震出版社,1983.
[8] ΓК·克列因,陈万佳.散粒体结构力学[M].北京:中国铁道出版社,1983
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心