【作者】 肖建春； 陈强； 胡天杰； 罗杰； 毛家意；

【Author】 Xiao Jianchun;Chen Qiang;Hu Tianjie;Luo Jie;Mao Jiayi;Space Structure Research Center, Guizhou University;Guiyang City People’s Air Defense Office;

【机构】 贵州大学空间结构研究中心； 贵阳市人民防空办公室；

【摘要】 钢空腹夹层板受剪力键与上下肋连接的节点域影响明显。为了研究剪力键加劲肋对基频的影响,采用基于梁-块体-板壳单元的有限元方法进行正交正放形式的钢空腹夹层板的自振频率计算。分析表明,加劲肋能较大幅度提升基频。加劲肋宽度在100mm以内时基频提高更为明显。无加劲肋时增大剪力键宽度对基频的改变不明显。有加劲肋时增大剪力键宽度反而会降低基频。更多还原

【Abstract】 The steel open-web sandwich plate is obviously affected by the joint area of shear block and upper/lower rib. In order to study the effect of rib stiffener of shear block on the fundamental frequency, the natural vibration frequency calculation of steel open-web sandwich plate with orthogonal two-way layout is carried out by using finite element method based on beam, block and plate-shell elements. The analysis shows that the rib stiffener greatly increases the fundamental frequency. The increase of fundamental frequency is more obvious when the width of rib stiffener is within 100 mm. The change of the fundamental frequency is not obvious when the shear block width is increased without rib stiffener. With rib stiffener, increasing the width of shear bond will decrease the fundamental frequency.更多还原