杨嘉胤, 童根树, 张磊. 竖向闭口加劲钢板剪力墙在非均匀压力下的弹性稳定性研究[J]. 工程力学, 2015, 32(11): 132-139. DOI: 10.6052/j.issn.1000-4750.2014.04.0293
引用本文: 杨嘉胤, 童根树, 张磊. 竖向闭口加劲钢板剪力墙在非均匀压力下的弹性稳定性研究[J]. 工程力学, 2015, 32(11): 132-139. DOI: 10.6052/j.issn.1000-4750.2014.04.0293
YANG Jia-yin, TONG Gen-shu, ZHANG Lei. RESEARCH OF ELASTIC BUCKLING OF STEEL SHEAR WALLS STIFFENED BY VERTICAL TUBES UNDER NONUNIFORM COMPRESSION[J]. Engineering Mechanics, 2015, 32(11): 132-139. DOI: 10.6052/j.issn.1000-4750.2014.04.0293
Citation: YANG Jia-yin, TONG Gen-shu, ZHANG Lei. RESEARCH OF ELASTIC BUCKLING OF STEEL SHEAR WALLS STIFFENED BY VERTICAL TUBES UNDER NONUNIFORM COMPRESSION[J]. Engineering Mechanics, 2015, 32(11): 132-139. DOI: 10.6052/j.issn.1000-4750.2014.04.0293

竖向闭口加劲钢板剪力墙在非均匀压力下的弹性稳定性研究

RESEARCH OF ELASTIC BUCKLING OF STEEL SHEAR WALLS STIFFENED BY VERTICAL TUBES UNDER NONUNIFORM COMPRESSION

  • 摘要: 对非均匀压应力作用下设置多道竖向闭口加劲肋的钢板剪力墙进行了有限元弹性屈曲分析,得到了屈曲临界应力随加劲肋加劲系数变化的曲线,以及各情况下的门槛刚度值。加劲肋门槛刚度随偏压系数增大而减小,随加劲肋数目增多而增大,随小区格宽高比增大而减小,随加劲肋扭弯比增大而减小。提出了竖向闭口加劲钢板剪力墙弹性屈曲加劲肋门槛刚度的近似计算公式,公式计算结果偏于安全。

     

    Abstract: The elastic buckling analysis of steel shear walls stiffened by vertical tubes under non-uniform compression is carried out using FEM, and the curves relating compressive buckling stresses to the rigidities of stiffeners are obtained, from which the threshold rigidities of the stiffener are obtained, which are the demarcation of global buckling and local panel buckling of the stiffened shear wall. The results reveal that the threshold rigidity increases with the number of the stiffeners and decreases with the ratio of flexural to torsional rigidities of the stiffeners, the panel width-to-height ratio and the non-uniform stress distribution factor. Approximate formulas are proposed to calculate the threshold rigidities of the stiffeners, which are reasonably conservative.

     

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