摘要
针对目前曲梁承载力方面的研究比较缺乏 ,进行了 18根焊接工字形水平钢曲梁的极限承载力试验。通过试验研究 ,了解水平钢曲梁在弹塑性阶段的工作特性 ,给出每个构件的荷载 -位移曲线和极限承载力 ,得到了曲梁承载力随跨长、曲率半径以及截面尺寸的变化规律。同时将试验结果与有限元分析的结果进行比较 ,在考虑端部翘曲约束的情况下 ,两者符合较好。
Relatively little experimental studies are available on the ultimate bearing capacity of curved beams,18 simple-supported welded beams subjected to a concentrated force at the mid-span are tested.The load displacement curves and the ultimate bearing capacity of each member are presented.Effects of beam length,radius of curvature and flexural-torsional rigidity on ultimate bearing capacity are examined.Test results for deformations and ultimate bearing capacity are found to be in good agreement with the corresponding values predicted by the elasto-plastic finite element analysis when warping boundary constraints are considered.
出处
《钢结构》
2005年第1期14-18,共5页
Steel Construction
