PDF(Pubmed)
Abstract：
The study investigates the bending strength of tracks of box headers beyond AISI, which considers the capacity of individual channels alone. Both experimental and FEM are used, and the results are compared to AISI. The findings highlight tracks\' significant role in the overall bending capacity. AISI is found to be conservative by 34% to 152%. Failure mode is different from code theoretical expectations for a single channel. Fastener close spacing marginally improves the capacity, while side fasteners offer significant enhancement, but track widening limits this enhancement. A modification to AISI is proposed considering track strength, with outcomes showing good accuracy.
摘要：
这项研究调查了AISI以外的箱式集管轨道的弯曲强度，仅考虑单个频道的容量。实验和有限元都使用，并将结果与AISI进行比较。研究结果强调了轨道在整体弯曲能力中的重要作用。发现AISI保守的比例为34％至152％。故障模式不同于单通道的代码理论预期。紧固件紧密间距边际提高了容量，虽然侧面紧固件提供了显着的增强，但是轨道加宽限制了这种增强。考虑到轨道强度，建议对AISI进行修改，结果显示出良好的准确性。
