Partially coated honeycomb steel-concrete composite beam and manufacturing method thereof

Abstract

The invention discloses a partially-coated honeycomb steel-concrete composite beam. The partially-coated honeycomb steel-concrete composite beam comprises honeycomb steel, wherein the honeycomb steel is H-shaped steel with hexagonal holes in a web, C-shaped connecting rods made of steel bars at set intervals are arranged between two flanges of the honeycomb steel, longitudinal bars and waist bars penetrate through the C-shaped connecting rods and are bound on the C-shaped connecting rods, and after the upward honeycomb steel of the steel web is laterally placed, a space between the two flanges is filled with concrete. The invention provides a manufacturing method of the partially-coated honeycomb steel-concrete composite beam. According to the partially-coated honeycomb steel-concrete composite beam and the manufacturing method thereof, the partially-coated honeycomb steel-concrete composite beam has the advantages that steel is saved, the flexural bearing capacity and rigidity are large, the prefabrication degree is high, the manufacturing period is shortened, the combination between the concrete and steel is good, and the fireproof and anti-corrosion performance is good.

Description

technical field [0001] The invention belongs to the field of civil engineering and assembled building structural components, and in particular relates to a partially covered honeycomb steel-concrete composite beam and a manufacturing method thereof. Background technique [0002] In the context of building industrialization, steel-concrete composite structures have many advantages: better fire and anti-corrosion performance than steel structures, better seismic performance than prefabricated concrete structures, etc. Although it is only covered (filled) with concrete between the two flanges of H-shaped steel (or I-shaped steel), the partially covered steel-concrete composite member (referred to as PEC member) has almost no formwork, a large saving of fireproof and anti-corrosion coatings, etc. advantage. However, the web of the traditional PEC member is a whole steel plate, and concrete needs to be poured on both sides of the web during prefabrication, which not only increas...

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Problems solved by technology

However, the web of the traditional PEC member is a whole steel plate, and concrete needs to be poured on both sides of the web during prefabrication, which not only increases the prefabrication period, but also the combination of concrete and steel on both sides is not good, and prefabricated bolts are required; in addition , the section height of the traditional PEC member is the same as the height of the H-section steel, and the distance between the flanges that bear most of the bending moment is too small to fully utilize the efficiency of the beam section

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