Novel steel-concrete combined open web girder and manufacturing method thereof

Abstract

The invention discloses a novel steel-concrete combined open web girder and a manufacturing method thereof. The open web girder comprises upper-portion rectangular portion reinforced concrete, lower-portion pulled steel plates, end arc-shaped steel pipes and steel plate hoops, wherein longitudinal steel bars are reserved at two ends of the upper-portion rectangular portion reinforced concrete, the longitudinal steel bars are inserted into the end arc-shaped steel pipes together with the ends of the upper-portion rectangular portion reinforced concrete, then concrete is cast into the end arc-shaped steel pipes, and the upper-portion rectangular portion reinforced concrete is anchored and connected with the end arc-shaped steel pipes together after the concrete reaches the design strength. The problems of slippage between the concrete and section steel in a traditional steel-concrete combined girder, welding stress and deformation caused by welding, large formwork consumption, low construction efficiency and the like are solved, the steel-concrete combined open web girder has good mechanical properties, the open web position of the girder facilitates layout of special water heating and electrical pipelines, and accordingly building space is saved.

Description

technical field [0001] The invention relates to a novel steel-concrete composite hollow beam and a manufacturing method thereof, belonging to the technical field of construction engineering. Background technique [0002] Ordinary ordinary concrete beams have the disadvantages of self-heaviness, large height leading to increased space occupation, poor ductility, small span, large amount of concrete and steel bars, and low construction efficiency. These shortcomings seriously hinder the development of concrete beams in the field of construction engineering. Now, in order to solve these shortcomings of ordinary reinforced concrete members, domestic experts and scholars have proposed a variety of steel concrete solid web and hollow beams, but these beams have some defects. For example: slippage between concrete and section steel, welding stress and deformation caused by welding, costly formwork, low construction efficiency, etc. Contents of the invention [0003] In order to...

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Problems solved by technology

[0003] In order to better solve the problems of structural self-weight, deformation and stress caused by welding, high cost of formwork, and low construction efficiency, the present invention makes full use of the mechanical properties of the materials used to provide a new type of construction that is simple to assemble, saves formwork, and has high construction efficiency. Steel-concrete composite hollow beam and manufacturing method thereof, to overcome deficiencies in the prior art

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