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Upper chord carrier bar, supporting system and upper chord carrier bar manufacture method

A support system, bearing beam technology, applied in joists, girders, trusses, etc., can solve problems such as instability

Active Publication Date: 2009-03-25
ISPAN SYST LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tendency to be unstable due to mechanical moments about the longitudinal axis in eccentric designs

Method used

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  • Upper chord carrier bar, supporting system and upper chord carrier bar manufacture method
  • Upper chord carrier bar, supporting system and upper chord carrier bar manufacture method
  • Upper chord carrier bar, supporting system and upper chord carrier bar manufacture method

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Embodiment Construction

[0072] In the following description, the same elements are denoted by the same reference numerals. The drawings are not drawn entirely to scale, and are sometimes exaggerated in order to clearly reflect certain features of the present invention.

[0073] Figure 1 shows a prior art open web-shaped beam structure 2 comprising an upper chord assembly 4 and a lower chord assembly 6 spaced apart from each other. The chords are joined to each other by meandering the webs 8, which can generally be connected to the upper and lower chord assemblies 4, 6 by various means such as welding.

[0074] Fig. 2 shows a prior art cold-formed beam structure 10 formed by rolling light gauge steel, which includes a beam web 12 and upper and lower chords 11 and 13, wherein the beam web has through-formed for receiving such as A plurality of holes 14 for objects such as wire rods.

[0075] Figures 3 and 5 show two similar embodiments of the invention, upper chord loaded concentric beams, in which t...

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PUM

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Abstract

A joist comprised of at least one cold-formed steel elongated chord member; a cold-formed steel web having a plurality of web members and means for securing said web to said chord member. A plurality of joists are generally for use in a support system for a platform or a deck in the construction of floors and roofs. The support system is of particular use in a composite floor and roof systems.

Description

technical field [0001] The invention relates to an upper chord load-bearing beam, a support system with an upper chord load-bearing beam and a manufacturing method for an upper chord load-bearing beam. The invention includes cold-formed steel beams and assemblies formed from such beams for supporting floors and roofs in the construction industry, such as support structures including fire-resistant shaped steel-concrete composite structures. Beams supported by top or bottom chords are within the scope of this invention. Background technique [0002] Joists are widely used in the construction industry to span a distance between opposing walls and to provide structural support for slabs (floors), roofs, and the like. Beams can be constructed of a variety of materials, including soft wood, wood-based laminates, and metal, especially steel. [0003] Steel girders may be constructed as open web-type structures, which essentially include upper and lower chord elements extending l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/08E04B5/10B21D53/00
Inventor 迈克尔·理查德·斯特里克兰徐磊
Owner ISPAN SYST LP