偏心受压冷弯薄壁槽钢的卷边角度优化设计
发布时间：2018-11-26 13:22
【摘要】：为了使得钢结构的性能与用钢量比达到最优,前人对槽型钢的截面尺寸优化进行了较为充分的研究。但是,涉及卷边角度的优化特别是偏心受压工况下的优化分析却很缺乏。以Yao-Teng偏心受压计算公式,结合遗传算法,以冷弯卷边槽钢柱偏心受压为例,将槽钢卷边角度与偏心距作为设计变量,寻找在不同偏心距受压情况下,达到最大畸变屈曲临界应力的卷边角度。基于有限条分析程序,对两端简支与两端固支情况下不同截面尺寸构件的畸变屈曲临界应力进行了计算分析,最终得出不同偏心距受压下统一的最优卷边角度。为了方便工程设计人员设计时参考,建议卷边角度统一取为100°。
[Abstract]:In order to optimize the performance of steel structure and the ratio of steel to steel, the section size optimization of groove steel was studied. However, the optimization of crimping angle, especially under eccentric compression condition, is lacking. Taking the calculation formula of Yao-Teng eccentricity compression and genetic algorithm as an example, the angle and eccentricity of channel steel crimping are taken as design variables to find out the case of different eccentricity under different eccentricity. The crimping angle reaches the critical stress of maximum distortion buckling. Based on the finite strip analysis program, the buckling critical stress of members with different cross-section sizes under the condition of simply supported and clamped ends is calculated and analyzed, and the uniform optimal crimping angle under different eccentricity is obtained. In order to facilitate the design of engineering designers, it is suggested that the angle of crimping should be 100 掳.
【作者单位】： 宁波大学机械工程与力学学院;上海交通大学船舶海洋与建筑工程学院;浙江省二建钢结构有限公司;
【分类号】：TU391
[Abstract]:In order to optimize the performance of steel structure and the ratio of steel to steel, the section size optimization of groove steel was studied. However, the optimization of crimping angle, especially under eccentric compression condition, is lacking. Taking the calculation formula of Yao-Teng eccentricity compression and genetic algorithm as an example, the angle and eccentricity of channel steel crimping are taken as design variables to find out the case of different eccentricity under different eccentricity. The crimping angle reaches the critical stress of maximum distortion buckling. Based on the finite strip analysis program, the buckling critical stress of members with different cross-section sizes under the condition of simply supported and clamped ends is calculated and analyzed, and the uniform optimal crimping angle under different eccentricity is obtained. In order to facilitate the design of engineering designers, it is suggested that the angle of crimping should be 100 掳.
【作者单位】： 宁波大学机械工程与力学学院;上海交通大学船舶海洋与建筑工程学院;浙江省二建钢结构有限公司;
【分类号】：TU391
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