Steel corrugated shell and prestressed concrete composite beam and construction method thereof

Abstract

The invention provides a steel corrugated shell and prestressed concrete composite beam and a construction method thereof. The steel corrugated shell and prestressed concrete composite beam comprisesa steel corrugated shell, a prestressed steel strand and a concrete layer, wherein the steel corrugated shell comprises upper flanges, lower flanges, a corrugated web and an end web; the two upper flanges are arranged in parallel at left and right and are connected with each other by means of at least one upper flange connecting piece; the two lower flanges are arranged in parallel at left and right and are connected with each other by means of at least one lower flange connecting piece; the upper flanges and the lower flanges are arranged up and down in parallel; the corrugated web is arranged between the upper flanges and the lower flanges; the end web is arranged at the end of the corrugated web and is erected between the upper flanges and the lower flanges; the prestressed steel strandis arranged in the steel corrugated shell and passes through the steel corrugated shell along the length direction of the steel corrugated shell; the steel corrugated shell is internally filled withconcrete so as to form the concrete layer. The steel corrugated shell and prestressed concrete composite beam provided by the invention is good in shearing resistance, shock resistance and fire resistance, and is economical.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to a steel corrugated carapace and prestressed concrete composite beam and a construction method. Background technique [0002] As we all know, the goal of seismic fortification of building structures is not damaged by small earthquakes, repairable by moderate earthquakes, and not damaged by major earthquakes. For frame structures, strong shear and weak bending are required, the purpose of which is to allow the structure to have sufficient ductility during a major earthquake to consume energy during a major earthquake and ensure that it will not collapse during a major earthquake. [0003] The existing prestressed reinforced concrete beam, its shear bearing capacity calculation formula is V≤аcv*ft*b*ho+fyv*Asv / s*ho+0.05NPo, from this formula we can know that the shear effect of the stirrup is According to the calculation of the design value of the tensile st...

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Problems solved by technology

[0005] The existing corrugated steel web combined box girder is composed of concrete top and bottom plates, external prestressed tendons and corrugated webs. The box girder is hollow and has no concrete. , Good seismic performance, but generally used in bridge structures, not used in the field of building structures

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