Prestressed steel beam and ultrathin sandwich floor adopting prestressed steel beam

Abstract

The invention provides a prestressed steel beam. The prestressed steel beam comprises long-strip-shaped profile steel, a first limiting portion arranged on the upper middle portion in the length direction of the profile steel and at least one tensile part arranged in the length direction of the profile steel and connected with the first limiting portion. The first limiting portion is arranged at the position close to the side bearing the tensile stress of the profile steel. One point at least exists on each tensile part, wherein the distance between the point and the side bearing tensile stress of the profile steel is larger than the distance between the center line of the profile steel and the side bearing the tensile stress of the profile steel. The tensile parts are in a tensioning state so as to generate tensile stress in the length direction of the tensile parts. The first limiting portion is used for enabling resultant force or component force of the tensile stress generated by the tensile parts to act on the profile steel so as to offset one part of pressure borne by the profile steel. In addition, the invention provides an ultrathin sandwich floor.

Description

technical field [0001] The invention relates to the technical field of buildings, in particular to a prestressed steel beam and an ultra-thin sandwich floor using the prestressed steel beam. Background technique [0002] Disclaimer: Throughout this specification, any discussion of background art should in no way be considered an acknowledgment that such art is well known, or forms part of the common general knowledge in the art. [0003] With the continuous improvement of people's living standards, people's requirements for their own living environment are getting higher and higher. In order to maximize the living space, people often choose to transform the living space with high floor height into a duplex space, that is, to set up a mezzanine in the middle of the living space, and remodel part or all of the original single-story living space. It is divided into double-layer living space, and an overhead mezzanine is usually used to increase the spaciousness of the space. ...

AI Technical Summary

Problems solved by technology

However, in the above methods, the method of increasing the cross section of the beam will reduce the floor height after reconstruction, which not only greatly reduces the utilization rate of the indoor space, but also makes the residents feel depressed due to the low floor height. Living in this environment for a long time, Detrimental to the physical and mental health of residents

However, the use of a responsible mechanical mechanism is not only complicated to build, but also requires a high level of construction of workers, resulting in a long construction period, increased uncontrollable factors, and serious consumables and high costs.

Images