A Prefabricated Construction Technology of Corrugated Steel Web Prestressed Concrete I-beam

Abstract

The invention discloses a prefabricating construction process for a corrugated steel web prestressed concrete I-shaped beam. The process comprises the following steps: 101, constructing a prefabricated pedestal; 102, mounting a bottom die plate; 103, mounting a reinforcement framework in a bottom plate; 104, mounting a corrugated pipe in the bottom plate; 105, mounting a positioning bracket and supporting a side die plate, wherein the positioning bracket comprises a supporting frame, and a plurality of positioning rods for positioning a corrugated steel web; 106, mounting the corrugated steel web, namely, mounting the corrugated steel web is mounted above the reinforcement framework in the bottom plate, and positioning through the positioning bracket; 107, pouring the concrete of the bottom plate; 108, mounting a top plate molding die plate; 109, mounting the reinforcement framework in a top plate; 110, pouring the concrete of the top plate; 111, stretching an inner cable in a bottom plate body. The prefabricating construction process is simple in steps, reasonable in design, convenient to implement, short in construction period, and high in construction quality; the prefabricated pedestal is matched with the positioning bracket to finish the prefabricating of a beam body, and the quality of a prefabricated beam body can be effectively ensured.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a prefabricated construction technology of corrugated steel web prestressed concrete I-beams. Background technique [0002] In order to meet the needs of economic construction and social development, the development of modern concrete bridges has put forward the goal of "light weight, high strength, and long span". Box girders can meet the stability requirements of the construction process due to their large bending and torsional rigidity. Analyzing the composition of the box girder, it can be known that the thickness of the top and bottom plates of the box girder is determined according to the bending resistance requirements of the section, and is restricted by the force of the structure and construction performance. The weight can be reduced by reducing the thickness of the top and bottom plates , the potential to reduce the cost is very limited, and for...

AI Technical Summary

Problems solved by technology

However, the prefabrication technology of prestressed concrete composite beams with corrugated steel webs is not yet mature enough. Small size and large number of webs, especially with the increasing span of prefabricated beams, prefabricated construction is very difficult, and the quality of prefabricated beams is not easy to guarantee

Therefore, there is a lack of a prefabricated construction process for corrugated steel web prestressed concrete I-beams with simple process steps, reasonable design, convenient implementation, short construction period and high construction quality. The prefabricated pedestal and positioning bracket are used to complete the beam body. Prefabricated, and can effectively guarantee the quality of prefabricated beams

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