对复杂结构采用不同软件计算的对比分析
The Comparison and Analysis of Different Software Calculation of Complex Structures

规范要求复杂结构应采用不少于两个不同的力学模型进行计算分析，本文结合某实际工程，采用YJK、Etabs、midas Building三种软件，分别对其进行了多遇地震作用下的振型分解反应谱法分析，并对计算结果进行比较。通过对比可得出，针对本工程该三种软件计算得到的各项指标基本接近，但某些指标也存在一定的差异，如振型等，本文同时也分析了引起某些差异的原因，并给出了解决办法。
According to the code, no less than two different mechanical models should be used to calculate and analyze complex structures. In this paper, combined with a practical project, the mode decomposition response spectrum under the frequent earthquake is analyzed by using YJK, Etabs and midas Building, and the calculated results are compared. Through the comparison, it can be concluded that the indexes calculated by the three kinds of software in this project are basically similar, but some results are also different in some indexes, such as mode shape, etc., this paper also analyzes the causes of some differences, and gives solutions.