SPIRALLY REINFORCED STRUCTURE

STRUCTURE FRETTEE EN SPIRALE

English Abstract

A reinforcement structure includes multiple steel bars (10,40,60), a primary spiral hoop (20) enclosing the multiple steel bars (10), wherein joints of the primary spiral hoop (20) and the steel bars (10) are securely combined, multiple secondary spiral hoops (30), wherein multiple steel bars (40,60) are inserted into each of the secondary spiral hoops (30) from outside of the primacy spiral hoop (20) to inside of the secondary spiral hoop (30) so that joints between the primary spiral hoop (20) and the secondary spiral hoop (30) are formed. A steel bar (10) is sandwiched between the primary spiral hoop (20) and the secondary spiral hoops (30) and joints of the steel bar (10) to the primary spiral hoop (20) and the secondary spiral hoops (30) are securely combined via steel wires. The reinforcement is thus formed by the steel bars, the primary spiral hoop and the secondary spiral hoops.

French Abstract

Une structure de renfort comprend plusieurs barres d'acier (10, 40, 60), un arceau en spirale principal (20) entourant les multiples barres en acier (10), dans laquelle des articulations de l'arceau en spirale principal (20) et les barres d'acier (10) sont combinés en toute sécurité, à plusieurs arceaux en spirale secondaires (30), plusieurs barres d'acier (40, 60) étant insérées dans chacun des arceaux en spirale secondaires (30) depuis l'extérieur de l'arceau en spirale principal (20) à l'intérieur de l'arceau en spirale secondaire (30) de telle sorte que des articulations entre l'arceau en spirale principal (20) et l'arceau en spirale secondaire (30) sont formées. Une barre d'acier (10) est enserrée entre l'arceau en spirale principal (20) et les arceaux en spirale secondaires (30) et les articulations de la barre d'acier (10) dans l'arceau en spirale principal (20) et les arceaux en spirale secondaires (30) sont combinés en toute sécurité, via des fils d'acier. L'armature est donc formée par les barres d'acier, l'arceau en spirale principal et les arceaux en spirale secondaires.

Claims

5
CLAIMS:
1. A reinforcement structure comprising:
a plurality of first, second and third steel bars (10,40,60);
a primary spiral hoop (20) enclosing the first steel bars (10), wherein the
primary
spiral hoop (20) and the first steel bars (10) are securely combined;
multiple secondary spiral hoops (30) interconnected with the primary spiral
hoop
(20), a third steel bar (60) sandwiched between the primary spiral hoop (20)
and each of
the secondary spiral hoops (30), a plurality of second steel bars (40)
inserted into each of
the secondary spiral hoops (30) and the third steel bars (60), the primary
spiral hoop (20)
and the secondary spiral hoops (30) being securely combined to one another.
2. The reinforcement as claimed in claim 1, wherein the secondary spiral
hoops (30) are arranged symmetrically with respect to each other on the
primary spiral
hoop (20).
3. The reinforcement as claimed in claim 2, wherein the second steel bars (40)
and the third steel bars (60) in the secondary spiral hoop (30) are equally
spaced from
each other.
4. The reinforcement as claimed in claim 3, wherein steel wires are used to
combine the third steel bars (60) with the primary spiral hoop (20) and the
secondary
spiral hoops (30).
5. The reinforcement as claimed in claim 3, wherein welding is used to
combine the third steel bars (60) to the primary spiral hoop (20) and the
secondary spiral
hoops (30).

Description

CA 02429927 2003-05-27
SPIRALLY REINFORCED STRUCTURE
1. Field of the Invention
The present invention relates to a spirally reinforced structure, and more
particularly to the reinforcing cage having a primary spiral hoop and multiple
secondary
spiral hoops securely connected to a contour of the primary spiral hoop. Each
of the
secondary spiral hoops together with the primary spiral hoop sandwich
therebetween
reinforcement so that the reinforcing cage with an appropriate length is
completed.
Thereafter, a column or a beam of a building is formed after poured of
concrete, which is
efficient and convenient.
2. Description of Related Art
Reinforced Construction (RC) method to form a column, beam uses concrete to
resist pressure. Steel bars are used to resist tension and shear force so that
the reinforced
construction is able to resist an earthquake of a certain degree and loading.
The reinforcing cage normally is formed with multiple primacy steel bars,
hoops
and crossties. The primary steel bars are longitudinally extending in the
reinforcing
cage . The hoops are latitudinally extending in the reinforcement to confine
the outer
peripheries of the primary steel bars to reinforce shear resistance of a
construction and to
accomplish the effectiveness of limiting the primary steel bars. The crossties
are
latitudinally extending in the reinforcement to reinforce the reinforcement.
However,
the aforementioned reinforcement still encounter drawbacks when in use and
needs to
be improved.
1. time consuming and inefficient: due to the trivial details in the
employment of
the method, the time required is lengthy anti is very inconvenient.
2. beside the reinforcements, multiple crossties are required, which increases

CA 02429927 2003-05-27
the inconvenience of the method.
To overcome the shortcomings, the present invention tends to provide an
reinforcement structure to mitigate and obviate the aforementioned problems.
The primary objective of the present invention is to provide an improved
reinforcement structure having a primary spiral hoop and multiple secondary
spiral
hoop s. The primary spiral hoop securely is connected to multiple steel bars
inside the
primary spiral hoop via welding or something else appropriate. Multiple
secondary
spiral hoops outside the primary spiral hoop are securely connected to
multiple steel
bars outside the primary spiral hoop.
After the reinforcement put inside the overlap area between the primary spiral
hoop and the secondary spiral hoop, the reinforcing cage is formed, which is
convenient
and time efficient and needs not any cross ties to secure the engagement
between the
primary spiral hoop and the secondary spiral hoops.
Other objects, advantages and novel features of the invention will become more
apparent from the following detailed description when taken in conjunction
with the
accompanying drawings.
In the drawings
Fig. 1 is an exploded perspective view of the reinforcement of the present
invention;
Fig. 2 is a schematic view of the first step of assembling the reinforcement;
Fig. 3 is a schematic view of the second step of assembling the reinforcement;
Fig. 4 is a schematic view of the third step of assembling the reinforcement;
Fig. 5 is a schematic view of the final step of assembling the reinforcement;
and
Fig. 6 is a perspective view of the reinforcement in assembly.
The present invention is an assembly structure between a spiral hoop and the

CA 02429927 2005-11-23
steel bars. With reference to Figs. l, 2, 3 and 6, the present invention
includes following
elements:
Multiple steel bars (10,40,60) which extend longitudinally;
A primary spiral hoop (20) which is used to symmetrically enclose the multiple
steel bars (10). Joints between the primary spiral hoop (20) and the steel
bars (10) are
securely combined via steel wires or welding;
Multiple secondary spiral hoops (30) are respectively interconnected to the
primary spiral hoop (20) (as shown in Fig. 4). A steel bar (60) is sandwiched
between the
primary spiral hoop (20) and the secondary spiral hoops (30). Joints among the
steel bars
(60), the primary spiral hoop (20) and the secondary spiral hoops (30) are
securely
combined via steel wires or welding. The secondary spiral hoops (30) are
symmetrically
arranged on the primary spiral hoop (20) and the quantity of the secondary
spiral hoops
(30) is four.
With reference to Figs. 4 and 5, multiple steel bars (40) are inserted into
each of
the secondary spiral hoops (30) from outside of the primary spiral hoops (20)
to inside of
the secondary spiral hoop (30) so that the joints between the primary spiral
hoop (20) and
the secondary hoop (30) are formed. It is to be noted that the insertion of
the secondary
spiral hoop (30) is sequential so that the steel bars (40,60) are symmetrical
to each other
in the secondary spiral hoop (30). If the length of the beam or column in a
building is
longer than normal, the operator is able to use multiple primary spiral hoops
(20) and
multiple secondary spiral hoops (30) to be mounted on the steel bars
(10,40,60) to

CA 02429927 2005-11-23
connect to a reinforcement with a proper length. Thereafter, as shown in Fig.
6, concrete
is poured into the reinforcement so as to form beams and columns.
The primary objective of the present invention is to use multiple primary
spiral
hoops (20) to respectively and securely connected to the outside of the steel
bars
(10,40,60). The primary spiral hoop (20), the secondary spiral hoops (30) and
multiple
steel bars (10,40,60) are combined via steel wires or welding. The steel bars
(60) are
sandwiched between the primary spiral hoop (20) and the secondary spiral hoops
(30)
and the joints are combined via steel wires or welding to form a reinforcement
with an
appropriate length.
It is to be understood, however, that even though numerous characteristics and
advantages of the present invention have been set forth in the foregoing
description,
together with details of the structure and function of the invention, the
disclosure is
illustrative only, and changes may be made in detail, especially in matters of
shape, size,
and arrangement of parts within the principles of the invention to the full
extent indicated
by the broad general meaning of the terms in which the appended claims are
expressed.

Representative Drawing