Static structures (e.g. – buildings) – Cast in situ concrete barrier with laterally projecting... – Sheet-form backer supported on upper terminal of sustainer
Reexamination Certificate
1999-11-19
2001-08-28
Kent, Christopher T. (Department: 3635)
Static structures (e.g., buildings)
Cast in situ concrete barrier with laterally projecting...
Sheet-form backer supported on upper terminal of sustainer
C052S414000, C249S013000, C249S018000, C249S021000
Reexamination Certificate
active
06279281
ABSTRACT:
This application claims the benefit of Korean Patent Application No. 1998-49915, filed on Nov. 20, 1998, which is hereby incorporated by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a concrete forming system used in a structural steel construction, more particularly to a concrete forming system for bridges or upper walls of buildings.
2. Description of the Related Art
Concrete forming systems are well known and widely used in the concrete structures. Concrete forming system generally comprises a concrete slab or panel, a section steel bar and a beam member, and is frequently used to create a substantially flat concrete surface for a horizontal floor or roof sections and vertical wall sections.
According to conventional art, to build bridges or buildings, a plurality of the concrete slabs or panels which are usually made of wood are used, and on the slabs concrete is formed. But to build a bridge or an upper wall of a building, there are some problems to provide the concrete slabs.
Thus, deck plates are developed instead of concrete slabs. The deck plates are assembled with the H-beam by welding, and on the deck plates concrete is poured and becomes solid.
However, such a concrete forming system has the following disadvantages.
Since the deck plate and the beam are welded, the deck plates can not be reused. In addition, a welding portion between the deck plate and the beam member may be decayed due to salty water or rainwater leading to a structural weakness. Besides, it is impossible to discern a cracked state of the concrete construction with naked eyes in the upper direction, since the lower portion of the upper wall or the bridge is covered with the deck plates. Thus, even when a concrete construction is cracked, it is so difficult to find the cracked state, which leads to lose proper time to repair the concrete construction.
SUMMARY OF THE INVENTION
Accordingly, the present invention is directed to a concrete forming system that substantially obviates some or all of the problems due to the limitations and limitation related to the prior art.
An object of this invention is to provide a reusable concrete forming system.
Another object of the invention is to provide a concrete forming system that is easy to find a defect such as a crack.
Additional features and advantages of the invention will be set forth in the description with follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
To achieve these and other advantages and the in accordance with the purpose of the present invention, as embodied and broadly described, the present invention provides, in one aspect, a concrete forming system for constructing an upper wall for a bridge or a building, including: a plurality of beams, each having a flange; a plurality of steel bars arranged between the two opposing beams; a plurality of slabs on the steel bars; a plurality of brackets, each having a horizontal portion and a vertical portion, the horizontal portion having a first engaging means, and the vertical portion being welded to an end of the steel bar; and a second engaging means for removably engaging the horizontal portion and the flange of the beam.
The first engaging means is a through hole, the second engaging means has a nut and a bolt which penetrates the through hole, and the flange of the beam is interposed between the nut and the horizontal portion of the bracket.
The concrete forming system further includes a support interposed between the horizontal portion of the bracket and the nut, the support having a substantially same height as that of the flange of the beam.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the invention as claimed.
REFERENCES:
patent: 1786751 (1930-12-01), Heeren
patent: 4151694 (1979-05-01), Sriberg et al.
patent: 4335557 (1982-06-01), Morton
patent: 5906076 (1999-05-01), McManus
Kent Christopher T.
Lee & Hong
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