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为了研究加筋壁板大开口结构的压缩承载极限问题,规划了两组具有不同设计参数的试验件进行了静力试验,并同时采用了线性特征值法以及非线性的弧长法对其压缩极限进行了对比分析。在采用弧长法分析时,引入了模态扰动技术,而且考虑了材料的弹塑性性质。计算结果与试验的对比表明:针对复杂结构稳定性问题,屈曲特征值法具有较大局限性,而结合模态扰动的弧长法对这种复杂的加筋壁板类结构压缩极限的分析精度较好。通过分析给出了加筋壁板大开口结构设计的一些建议。
In order to study the compressive load-bearing limit problem of the large opening structure of reinforced siding, two sets of test pieces with different design parameters are planned to be subjected to the static test, and the linear eigenvalue method and the non-linear arc length method are used to compress it Limit conducted a comparative analysis. In the arc-length analysis, the modal perturbation technique is introduced, and the elasto-plastic properties of the material are considered. The comparison between the calculated results and the experimental results shows that the buckling eigenvalue method has a great limitation to the problem of the stability of complex structures. The accuracy of the analysis of the compression limit of such complex stiffened siding structures better. Through the analysis, some suggestions on the structural design of the large opening of reinforced siding are given.