Research on lateral impact resistance of steel lattice columns
In order to compare the impact resistance of lattice steel columns with different lacing elements,a numerical model was established using the finite element software ABAQUS.The correctness of the numerical simulation method was checked via com-parison with existing experiments.Three different lattice column sizes were constructed with the same load carrying capacity to ana-lyze the changes of impact force,lateral displacement and energy during the response of the columns under lateral impact loading.The results show that,compared with those of the lacing plate lattice column,the plateau impact of the lacing bar lattice column is elevated,the impact energy absorption capacity is 1.5-3.4 times higher,and the bending resistance of the member is better.The impact resistance of the lacing bar lattice column is positively correlated with the spacing of the column limbs.Additionally,the main energy absorbing component of the lacing plate lattice column is the column limbs,accounting for 85%-92%,while the main energy absorbing component of the lacing bar lattice column is the laminated bar,accounting for 50%-73%.
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