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US 2003/0192272 A1Published application
System and method for the reinforcement of concrete
AssigneeNone recorded
InventorLeonid G. Bravinski
Life of this patent
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AssigneeNone recorded
InventorLeonid G. Bravinski
Estimating the term…
A system for reinforcing a concrete structural member comprises a panel oriented longitudinally and at least one frame assembly module. The module is formed with several rod members and with a reinforcement member defines a retention cell having a generally vertically oriented opening for receiving a vertical reinforcement member. An additional rod member can be employed in abutment with an interior surface of the panel. The panel body can hold a connector, such as a mushroom shaped connector, which can be used for mounting the module and also be used in conjunction with a bracer to join two panels and their associated modules together. Adjacent abutting panels can have overlapping reinforcement members, which can be inclined or have angled end portions. Each panel can have associated with it a plurality of retention cells arranged, transversely, longitudinally and vertically. The reinforcement system can be used as part of formwork used in constructing a structural member, or used with conventional formwork. The system can be substantially preconstructed away from the construction site and then delivered to the construction site.
A system for reinforcing a concrete structural member comprising:
A method of reinforcing a concrete structural member comprising:
A method of building a concrete structural member with reinforcement positioned in a form space, comprising:
A system for forming reinforced concrete including:
A reinforcement system for a concrete structural member comprising:
A method of reinforcing a concrete structural member comprising:
A system for reinforcing a concrete structural member comprising:
A system for reinforcing a concrete structural member comprising first and second panel units, each panel unit comprising
A system for creating a concrete form comprising said first and second panels arranged such that said first and second panels are in longitudinal abutting and alignment, said first panel unit having a leading side face and said second panel having a trailing side face, said leading side face having a centrally positioned tongue portion and said trailing side face having a centrally positioned groove portion to generally provide a tongue in groove connection, wherein said leading face has side flange portions on either side of said tongue portion and said trailing face has side flanges on either side of said groove portion, and wherein when said panels are interconnected in abutting alignment, only the outer part of said side flanges are in contact with each other, and an air gap is otherwise provided between said side flanges and said tongue and groove portions.
A system for reinforcing a concrete structural member comprising:
A system for reinforcing a concrete structural member comprising:
A system for reinforcing a concrete structural member comprising:
A system for reinforcing a concrete structural member comprising:
A panel unit for use in connection with forming a concrete structural member, said panel unit comprising
A system of formwork using a reinforcement system, said reinforcement system comprising:
A system for reinforcing a concrete structural member comprising:
A system for reinforcing a concrete structural member comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups: of material other than metal or with only additional metal parts, e.g.…
Made in permanent forms: with ties attached to the inner faces of the forms
Made in permanent forms: with ties going through the forms
Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups: spacers connecting parts for reinforcements and spacing the reinforcements…
Term end not estimated
Concrete walls and other concrete structures, have traditionally been made by building a form. The forms were usually made from plywood and other wood members. Unhardened concrete is poured into the form space provided in the form. Once the concrete hardens, the form walls are removed leaving a concrete wall or other concrete structure/structural member.
Given the limitations in structural strength of concrete when subjected to certain types of loading such as tensile loading, it is known to provide reinforcement for the concrete. The reinforcement is typically accomplished by placing metal reinforcement bars (usually made from steel) within the space defined by the form. The precise positioning of the reinforcement bars is important and is selected to maximize the structural benefit and at the same time ensure other design criteria are met (e.g. ensuring a sufficient amount of concrete coverage for fire protection). After the reinforcement members are properly positioned, concrete is poured into the form space covering the steel reinforcement. The concrete is then allowed to harden, bonding the concrete to the steel reinforcement. The bonding between reinforcement and concrete is typically enhanced by providing reinforcement members that have ribbed outer surfaces. The overall composite structural member has enhanced load-bearing capacity and provides the possibility of being able to optimize the concrete structure thickness, and consequently economize on the materials and expenses for building erection.
The task of properly placing and positioning the reinforcement members within the form space however can be problematic. The reinforcement members are typically long steel rods. These rods must be supported if they are to be properly and securely positioned in the form space. Accordingly, systems have been developed to ensure that the reinforcement members are properly positioned within the form space and remain in their desired orientation and position throughout the concrete forming process.
In drawings which illustrate by way of example only, preferred embodiments of the present invention:
FIG. 1 is a perspective view illustrating a portion of a reinforcement system made in accordance with an embodiment of the invention;
FIG. 2 is a side elevation cross sectional view at the plane defined by 2-2 in FIG. 1;
With reference to FIGS. 1 and 2, the basic components of a reinforcement system generally designated 10 are disclosed and include a portion 12 of a panel 112 (see FIGS. 2A and 3). Portion 12 is integral with the rest of panel 112. Panel 112 can be made from any conventional suitable materials employed in concrete forms such as expanded polystyrene foam and extruded polystyrene foam. The system also includes an assembly frame module generally designated 14 and horizontal reinforcement bars 20. Horizontal reinforcement bar 20 is preferably standard steel rebar having a cross sectional diameter of between 5 and 12 mm, and preferably carries ribs on its outer surface to promote bonding with the concrete. Assembly frame module 14 includes longitudinally oriented wire rods 16 and 17, and transversely oriented wire rods 18 and 19. Wire rods 16, 17, 18 and 19 are preferably made from steel, but could be made from other suitable materials such as some other metals and selected fiber composite materials. Rods 16, 17 and 19 preferably have a diameter in the range of between 2.5 and 3.5 mm. Rod 18 has a shaft portion, which preferably has a diameter of between 4 and 6 mm. The end portion 18a of rod 18 is preferably made as a machine tap with the step of the spiral as 1.5-4.0 mm and outer diameter from 4.5 to 7.0 mm and with a length of approximately 30-40 mm. The end tap 18a is preferably made by the known method of rolling in contrast to the forming method of cutting.
Also, while connecting reinforcement bar 20 to rod 18 by means of spot welding, an outer cut 18b is formed in the rod 18, which generally has a circular profile and the depth of which is 6-8% of the diameter of the bar 20 and rod 18. This provides a proper connection but does not significantly lessen the strength of the connected rod. Rod 19 would be connected to bar 20 in the same manner as rod 18, and during the process of spot welding cutouts will be formed.
It should be noted from FIGS. 1 and 2 that in the preferred embodiment, wire rod 19 extends past longitudinal rod 17 but does not extend all the way to contact the inner surface 30 of panel portion 12.