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借助ANSYS有限元分析软件,分析侧向支撑对钢结构中腹板高度线性变化的简支双轴对称工字型楔形梁的整体稳定性能的影响,着重研究楔形梁的楔率及两端不等端弯矩比值变化时,侧向支撑个数、间距及作用位置的改变对其整体稳定性能的影响,找到楔率、不等端弯矩比值的不同组合下,支撑间距为多少时可忽略支撑个数增加对楔形梁整体稳定性能的影响。研究发现,当支撑作用在楔形梁上翼缘时,满足要求的支撑间距及个数要根据楔率和不等端弯矩的比值情况而定;当支撑作用在楔形梁下翼缘时,以3 m为间距布置支撑已经足够保证梁的整体稳定性,且数量较为合理。
With ANSYS finite element analysis software, the influence of lateral support on the overall stability of simple supported biaxial symmetric wedge beam with linear height variation in steel structure was analyzed. The wedges and unequal ends When the bending moment ratio changes, the influence of the change of lateral support number, spacing and action position on its overall stability can be neglected when the support spacing is found under different combinations of wedge rate and unequal bending moment ratio The Influence of Increasing Number on the Overall Stability of Wedge Beam. The results show that when the support is applied to the flange on the wedge beam, the spacing and the number of the supports that meet the requirements depend on the ratio of the wedge and the unequal moment. When the support acts on the lower flange of the wedge beam, It is enough to ensure the overall stability of the beam, and the number is reasonable.