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Introduction

I-beam, also known as steel beam (English name Universal Beam), is a long steel with an I-shaped cross section. I-beams are divided into ordinary I-beams and light I-beams. It is an I-shaped section of steel. Regardless of whether the I-shaped steel is ordinary or light, because the cross-section size is relatively high and narrow, the moment of inertia of the two main axes of the cross-section is quite different, so it can only be directly used for bending in the plane of its web. Component or form it into a lattice-type force-bearing component. It is not suitable to use axial compression components or components that are perpendicular to the plane of the web and have bending, which makes the application range very limited. Ordinary I-beams and light-duty I-beams have relatively high and narrow cross-sections, so the moments of inertia of the two main axes of the cross-sections are quite different, which limits their application range. The use of I-beam should be selected according to the requirements of the design drawings. The selection of I-beam in the structural design should be based on its mechanical properties, chemical properties, weldability, structural size, etc. to select a reasonable I-beam for use.

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