What Is An I-beam

I-shaped beam refers to a beam with an H-shaped cross section. The upper flange is called the upper flange, the lower flange is called the lower flange, and the plate connecting the two flanges is called the web. The width of the upper and lower flanges is not equal to that of the unequal wing H-beam. H-beams include steel beams, reinforced concrete beams and prestressed reinforced concrete beams. The latter two are generally unequal-wing H-beams with upper flange larger than lower flange. .

The mechanics principle of the I-beam: A beam is placed horizontally on two supports, and when the beam is subjected to downward pressure perpendicular to the axis, the beam will bend. Compression deformation occurs at the upper part of the beam, that is, compressive stress occurs, and the closer it is to the upper edge, the more severe the compression; the tension deformation occurs at the lower part of the beam, that is, tensile stress occurs, and the closer it is to the lower edge, the more serious the tension. The middle layer is neither stretched nor compressed, so there is no stress, and this layer is usually called the neutral layer.

The temporary piers were built in the river during the water cut period during the annual repair period, and a 64-type military beam was erected on the temporary pier as a cast-in-place H-beam support. The concrete transportation adopts hand-push transportation, and the concrete vibrating mainly adopts the attached vibrator.