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为研究单杆式钢管独立避雷针在MIDAS/Gen和STAAD2种软件下计算结果的差别,对实际工程中的40m避雷针建立了模型,并对模型进行了施加横向均布荷载的受力性能分析。分析结果表明,2种软件对于顶端竖向单元所受横向均布荷载具有不同的处理方式,在弯矩、应力及位移的计算结果上存在一定的误差,MIDAS/Gen的计算值均比STAAD略大,且在避雷针结构的钢管厚度及管径变化时会发生应力突变。因此,在独立避雷针的设计工作中,MIDAS/Gen的结构分析更为安全和保守,可以为STAAD的计算结果提供很好的参考价值。
In order to study the difference between the results of MIDAS / Gen and STAAD software, the model of 40m lightning rod in practical engineering was established and the force performance analysis of the model subjected to transverse uniform load was carried out. The analysis results show that the two kinds of software have different treatment modes for the horizontal uniform load on the top vertical unit, and there is a certain error in the calculation results of bending moment, stress and displacement. The calculated values of MIDAS / Gen are slightly less than those of STAAD Large, and in the lightning rod structure of the pipe thickness and diameter changes will occur when the stress mutation. Therefore, the structure analysis of MIDAS / Gen is safer and more conservative in the design of independent lightning rod, which can provide a good reference value for STAAD calculation.