摘要
采用典型爆炸超压模型,应用ANSYS/LSDYNA非线性有限元软件,对高速公路钢桁架收费雨棚单榀桁架在爆炸荷载作用下的动力响应及破坏模式进行数值模拟。分析表明:在爆炸荷载作用下,钢桁架收费雨棚柱脚及与其相连的桁架1~2单元格杆件发生剪切、屈曲破坏,是单榀桁架发生整体倒塌的主要原因。
The typical explosion overpressure model is used to simulate the dynamic response and failure mode of single trusses of highway steel truss toll awnings under blast loading using ANSYS/LS-DYNA nonlinear finite element software.The analysis shows that under the blast load,the shear and buckling failure of the steel truss charging shed column foot and the truss 1~2 single element members connected with it is the main reason for the overall collapse of the single truss.
作者
郭晋欣
张金香
崔永林
王天新
GUO Jinxin;ZHANG Jinxiang;CUI Yonglin;WANG Tianxin(Shandong Provincial Communications Planning and Design Institute Co.,Ltd.,Shandong Jinan 250031 China;Qilu Expressway Company Limited,Shandong Jinan 250101 China)
