横截面中杠杆臂的相干概念

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI:10.2749/wroclaw.2020.0684

W. Lorenc, S. Balcerowiak, J. Czajkowski, J. Dobrzański

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引用次数: 2

摘要

提出了杠杆臂的相干概念。给出了杠杆臂Z关于剪切流的新的图形解释，并给出了数学证明。得出的结论是，杠杆臂Z是连接剪切流量和横向力的关键参数，它将一个截面的正应力和剪切流量图联系起来，这样的表示在文献中是未知的。考虑剪切流动的杠杆臂与考虑法向应力的剪切滞后效应的有效宽度有相似之处。介绍了对该问题进行历史分析的背景。

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The Coherent Concept of the Lever Arm in a Cross-Section

The coherent concept of the lever arm is presented. The new graphical interpretation of the lever arm Z regarding shear flow together with mathematical justifications are provided. The conclusion is, that the lever arm Z is a crucial parameter which connects shear flow and transverse force and it links diagrams of the normal stress and the shear flow for a cross-section and such a representation is not known at literature. There is an analogy between the lever arm regarding the shear flow and the effective width regarding shear-lag effect for normal stress. The background of historical analysis of the issue is presented.

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IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges

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