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首页> 外文期刊>International journal of steel structures >Efficient method to include joint zones of chord members in finite element model of tubular transmission tower at linear elastic stage
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Efficient method to include joint zones of chord members in finite element model of tubular transmission tower at linear elastic stage

机译：在线性弹性阶段的管状输电塔有限元模型中将弦杆连接区域包括在内的有效方法

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摘要

To include the effects of the joint zones efficiently, firstly a chord member considering the joint zones is seen as a combination of three beams with different sections and its element stiffness matrix is derived; Secondly, based on the statistically geometrical properties of the joint zones and chord members in service, the coefficients in the element stiffness matrix of the varied section beam element related to the moments and shear forces greatly increase more than 70%, while the coefficients related to axial forces only increase less than 2%. Therefore, along with the other two inherent mechanical properties of member structures, it is essential to include the effects of the joint zones. Finally, the results by the finite element models where the chord members and the joint zones are simulated by four methods are compared, which proves the efficiency and the accuracy of the varied section beam element.
机译：为了有效地包含关节区域的效果，首先将考虑了关节区域的弦构件视为具有不同截面的三根梁的组合，并得出其单元刚度矩阵。其次，根据在役关节区域和弦构件的统计几何特性，变截面梁单元的单元刚度矩阵中与弯矩和剪力有关的系数大大增加了70％以上，而与轴向力仅增加不到2％。因此，连同构件结构的其他两个固有的机械特性一样，必须考虑接合区域的影响。最后，对有限元模型的结果进行了比较，在有限元模型中，通过四种方法模拟了弦杆构件和节理区域，证明了变截面梁单元的效率和准确性。

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