EP1427899A1 - Spiral ties for reinforced columns - Google Patents

Spiral ties for reinforced columns

Info

Publication number
EP1427899A1
EP1427899A1 EP02750656A EP02750656A EP1427899A1 EP 1427899 A1 EP1427899 A1 EP 1427899A1 EP 02750656 A EP02750656 A EP 02750656A EP 02750656 A EP02750656 A EP 02750656A EP 1427899 A1 EP1427899 A1 EP 1427899A1
Authority
EP
European Patent Office
Prior art keywords
spiralnet
shows
point
column
spiraled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02750656A
Other languages
German (de)
French (fr)
Other versions
EP1427899A4 (en
Inventor
Alexee A. Gulikov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1427899A1 publication Critical patent/EP1427899A1/en
Publication of EP1427899A4 publication Critical patent/EP1427899A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E04C5/0618—Closed cages with spiral- or coil-shaped stirrup rod
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E04C5/0609—Closed cages composed of two or more coacting cage parts, e.g. transversally hinged or nested parts

Definitions

  • This invention a reinforcing wire, is designed to optimize reinforcement within a concrete column structure to be utilized in the construction industry as a reinforcement product.
  • the present invention provides a spirale shaped wire for steel bar reinforcement inside a concrete column instead of perpendicularly joined wires made ofthe same material.
  • the invention 5 comprises a series of shapes of rectangular, variable rectangular, hexagonal, variable hexagonal, pentagonal, variable pentagonal, quadrangular and cylindrical for reinforcement of concrete columns.
  • the invention provides reinforcement through a number of different shaped spiral structures to complement the respective design of each column.
  • the invention can match any numbers of steel bars.
  • the SpiralNet may be made of steel or material similar to steel or even plastic.
  • Figure 1 shows an example of how a single SpiralNet relates to quadrangular shaped concrete columns with 4 steel bars;
  • Figure 11 shows a top view ofthe circulation of figure 1 in application;
  • Figure 2 shows an example of how the SpiralNet is placed into a quadrangular shaped concrete column with 4 steel bars
  • Figure 21 shows an engineering-style drawing, using letters instead of numbers for better description.
  • Figure 1 from a manufacturing position, the numbers from 1 to 7 represent one circulation of bends to form the SpiralNet, and the A, B, C, and D represent 4 positions of parallel placed steel bars in a concrete column.
  • Figure 1.1 shows a single layout from a construction position.
  • the length from points 1 to 2 in Figure 1 represents the length "Ts" in Figure 21, which aims to provide enough length for tooling access during the bending operations and maintain 135 degree bend from the adjacent side to achieve better strength.
  • the position of point number 2 represents the first side bend ofthe SpiralNet
  • the position ofthe point number 3 represents the second side bend continuously from the first bend
  • the point number 4 represents the third side bend continuously from the second bend
  • the point number 5 represents the fourth side bend continuously from the third bend
  • the point number 6 represents the last bend continuously from the fourth bend in one spiral.
  • the length in point 6 to 7 in Figure 1 represents the length "Te" in Figure 21, which has the same function as the length in points 1 to 2. Both lengths in points 1 to 2 and points 6 to 7 provide the function for better positioning when assembling the SpiralNet for a complete spiraled wire net as shown in Figure 21.
  • the lengths in points 2 to 3 and points 4 to 5 represent the length "Sw" in Figure 21, and the lengths in points 3 to 4 and points 5 to 6 represent the lengths "Sh" in Figure 21.
  • Figure 2 shows how four components ofthe SpiralNet are assembled together in order to form a spiraled wire net for a portion of a 4 bar concrete column and
  • Figure 2.1 shows an assembled SpiralNet in standing position as an example.
  • the horizontal layout shows a manufacturing position and the vertical layout shows a construction position.
  • all meanings ofthe letters described are as following:
  • W width of the assembled spiraled wire net represents " W" in Figure 2 ;
  • H height ofthe assembled spiraled wire net represents "H" in Figure 21 ;
  • W centre distance of each side of wire after bending represents the width ofthe SpiralNet. It can be selected according to the current standard width of concrete columns; H centre distance between the top to bottom wire after bending, represents the height ofthe SpiralNet. It can be selected in the same way as the width; Pb pitch ofthe SpiralNet from the first bend to last bend on the same bar.
  • Te Tooling access length + R R radius of bend is determined by tooling, which is a range of less than the radius ofthe steel bar;
  • Figure 4 shows the SpiralNet double layout in rectangular shape with 6 steel bars, H will replace W in use ofthe above-mentioned equation to work out angle Q.
  • the SpiralNet has many different layouts as generally shown in Figure 11 via top views: the single layout shown in drawing 01 , drawing 02, drawing 05, and drawing 06 are associated to
  • Figure 2.1; the double layout shown in drawing 03 of Figure 11 is associated to Figure 2.2 or Figure 2.3; the multi layout shown in drawing 04, drawing 07, drawing 08 of Figure 11 and drawing 09, drawing 10, drawing 11 of Figure 12 is associated to Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9 and Figure 10.
  • Figure 2.3 shows from manufacturing position the dimensional variation of 6 steel bars in between single layout and double layout, which is the height of the SpiralNet.
  • the "Hd” represents the height ofthe whole column, and the “H” represents the height of SpiralNet. In this case, the "H” is always smaller than the "W”.
  • Figure 2.3 also shows how a portion of SpiralNet is assembled from manufacturing position of a 6 steel bars column.
  • FIG. 20 To assemble a mufti layout SpiralNet column, the detail is shown on Figure 20.
  • drawing 17 on the bottom ofthe column is shown the first assembled level of SpiralNet.
  • the top shows the first SpiralNet component of second level ofthe assembly.
  • the SpiralNet goes through bar 4, bar 1 and bar 2, stopping for the second SpiralNet component ofthe second level to slide in.
  • Drawing 18 shows the second SpiralNet component ofthe second level as it goes through bar 4, bar 3, and bar 5, stopping for the third SpiralNet component o the same level to slide in.
  • Drawing 19 shows the third SpiralNet component as it goes through bar5, bar 6 and bar8, stopping for the fourth SpiralNet component to slide in, and the first SpiralNet component on the same level goes through all bars including bar 3.
  • Drawing 20 shows the fourth SpiralNet component going through bar 8, bar 7, bar 9 and bar 10, so far the second SpiralNet component will go through bar 6, the third SpiralNet component will go through bar 7, and all SpiralNet component on the second level will go through all bars from 1 to 10 as presented in the drawing.
  • the whole level SpiralNet will be adjacent to the first level at bottom ofthe column.
  • the assembly process shall continue until the whole length of column is full. This method can be used to assemble any special shape column shown in Figure 11 and Figure 12.
  • drawing 12 of Figure 19 associated with Figure 13 shows a circular shape SpiralNet and Figure 14 shows its assembly in the column
  • drawing 14 of Figure 19 associated with Figure 15 shows a pentagon SpiralNet and Figure 16 shows its assembly in the column
  • drawing 15 of Figure 19 associated with Figure 17 shows a hexagon shape SpiralNet and
  • Figure 18 shows its assembly in a pentagon shaped column; drawing 16 in Figure 19 shows as 8 bar polygon shaped layout which indicates any multi- side polygon shaped SpiralNet with the same method.

Abstract

A SpiralNet device is disclosed. The device is consisted by its number of spiraled bends according to request geometric shape of a concrete column, where Figure 1 shows a SpiralNet for a rectangular shape frame of a concrete column. The spiraled bends are starting from point 1 to point 2 with 135 degree, and continuously followed by 90 degree spiraled bends from point 2 to point 3 along a side of a concrete column, and from point 3 to point 4 along an adjacent side of the same column, and from point 4 to point 5 the next adjacent side of the same column, and from point 5 to point 6 the continuous adjacent side of the same column, and then finished with the last 135 degree spiraled bend from point 6 to point 7. The measurement of bends are according to any section view which is perpendicular to all edges. The device can be used to construct any shape of concrete column by assembling SpiralNet in a unique order.

Description

Spiral ties for reinforced columns.
The invention is described in the following statement
This invention, a reinforcing wire, is designed to optimize reinforcement within a concrete column structure to be utilized in the construction industry as a reinforcement product.
For many years the construction industry has placed the reinforcing wires 5 perpendicularly to link the adjacent reinforcing bar to reinforce concrete columns. Around the time ofthe last decade, an improvement was made for cylindrical reinforced concrete columns by replacing the single reinforcing wire with a spiral shape wire. As a result, a significant improvement was made in reinforcement products with this new structure. However, all polygon 10 shaped concrete columns, such as rectangular, pentagonal, hexagonal, etc. have still not been changed significantly.
This problem is overcome by the present invention, which provides a spirale shaped wire for steel bar reinforcement inside a concrete column instead of perpendicularly joined wires made ofthe same material. The invention 5 comprises a series of shapes of rectangular, variable rectangular, hexagonal, variable hexagonal, pentagonal, variable pentagonal, quadrangular and cylindrical for reinforcement of concrete columns. Despite the number of steel bars within a column, the invention provides reinforcement through a number of different shaped spiral structures to complement the respective design of each column. Similarly, by changing the shape ofthe reinforcement wire the invention can match any numbers of steel bars.
The SpiralNet may be made of steel or material similar to steel or even plastic. For assistance with understanding the invention, references are provided to the accompanying drawings that show examples ofthe invention.
In the drawings:
Figure 1 shows an example of how a single SpiralNet relates to quadrangular shaped concrete columns with 4 steel bars; Figure 11 shows a top view ofthe circulation of figure 1 in application;
Figure 2 shows an example of how the SpiralNet is placed into a quadrangular shaped concrete column with 4 steel bars;
Figure 21 shows an engineering-style drawing, using letters instead of numbers for better description. Figure 1, from a manufacturing position, the numbers from 1 to 7 represent one circulation of bends to form the SpiralNet, and the A, B, C, and D represent 4 positions of parallel placed steel bars in a concrete column. Figure 1.1 shows a single layout from a construction position. The length from points 1 to 2 in Figure 1 represents the length "Ts" in Figure 21, which aims to provide enough length for tooling access during the bending operations and maintain 135 degree bend from the adjacent side to achieve better strength. The position of point number 2 represents the first side bend ofthe SpiralNet, and the position ofthe point number 3 represents the second side bend continuously from the first bend, and the point number 4 represents the third side bend continuously from the second bend, and the point number 5 represents the fourth side bend continuously from the third bend, and the point number 6 represents the last bend continuously from the fourth bend in one spiral. The length in point 6 to 7 in Figure 1 represents the length "Te" in Figure 21, which has the same function as the length in points 1 to 2. Both lengths in points 1 to 2 and points 6 to 7 provide the function for better positioning when assembling the SpiralNet for a complete spiraled wire net as shown in Figure 21. The lengths in points 2 to 3 and points 4 to 5 represent the length "Sw" in Figure 21, and the lengths in points 3 to 4 and points 5 to 6 represent the lengths "Sh" in Figure 21.
Figure 2 shows how four components ofthe SpiralNet are assembled together in order to form a spiraled wire net for a portion of a 4 bar concrete column and Figure 2.1 shows an assembled SpiralNet in standing position as an example. The horizontal layout shows a manufacturing position and the vertical layout shows a construction position. In Figure 2, all meanings ofthe letters described are as following:
L the total length of a fully assembled spiraled wire net;
W width of the assembled spiraled wire net, represents " W" in Figure 2 ;
H height ofthe assembled spiraled wire net represents "H" in Figure 21 ;
P pitch of each start point in repeating SpiralNet position in assembly;
G gap in between the end point of a SpiralNet to the next start point of a SpiralNet; G = P - Pb
In corresponding to Figure 1, the "W" represents the distance of line AB & line CD; the H represents the distance of line AD & line BC. Figure 21 shows an engineering style drawing to indicate how all factors relate to each other in this invention. The determination of all factors is given below:
W centre distance of each side of wire after bending, represents the width ofthe SpiralNet. It can be selected according to the current standard width of concrete columns; H centre distance between the top to bottom wire after bending, represents the height ofthe SpiralNet. It can be selected in the same way as the width; Pb pitch ofthe SpiralNet from the first bend to last bend on the same bar.
It can be worked out by: Pb = 2*(sin Q + cos Q) Ts tooling access at start point for bending operation, it can be found by Ts = Tooling access length + R
Te tooling access at end point for bending operation, it can be found by Te = Tooling access length + R R radius of bend is determined by tooling, which is a range of less than the radius ofthe steel bar; Sh Sh = H/cos Q determines side length ofthe height Sw Sw = W/cos Q determines side length ofthe width Q raising angle can be worked out by the formula provided below when the column has equal sides
Q = Tan"1 (Ps Ns*W)
Ps is the standard pitch on the existing column according to Australian standards; Ns represents the number of sides in one concrete column, in this example showing as 4 sides and 4 steel bars, where W = H. In the determination method in the situation of an unequal sides section view of a column, the longer side is used in the above formula as H. However Figure 4 also shows an unequal side SpiralNet layout, in a case of W < H. In this case H will replace the W in the above equation to work out angle Q. The W remains the same when W = H in the same equation above. For example, Figure 4 shows the SpiralNet double layout in rectangular shape with 6 steel bars, H will replace W in use ofthe above-mentioned equation to work out angle Q.
In quadrangular shaped columns the SpiralNet has many different layouts as generally shown in Figure 11 via top views: the single layout shown in drawing 01 , drawing 02, drawing 05, and drawing 06 are associated to
Figure 2.1; the double layout shown in drawing 03 of Figure 11 is associated to Figure 2.2 or Figure 2.3; the multi layout shown in drawing 04, drawing 07, drawing 08 of Figure 11 and drawing 09, drawing 10, drawing 11 of Figure 12 is associated to Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9 and Figure 10. The double layout in use only when the numbers of steel bars are no less than 6, in Figure 4 shows 6 steel bars layout and 8 steel bars layout.
The double layout aims to make the whole reinforcing wire net stronger. Figure 2.3 shows from manufacturing position the dimensional variation of 6 steel bars in between single layout and double layout, which is the height of the SpiralNet. The "Hd" represents the height ofthe whole column, and the "H" represents the height of SpiralNet. In this case, the "H" is always smaller than the "W". Figure 2.3 also shows how a portion of SpiralNet is assembled from manufacturing position of a 6 steel bars column.
To assemble a mufti layout SpiralNet column, the detail is shown on Figure 20. In drawing 17 on the bottom ofthe column is shown the first assembled level of SpiralNet. The top shows the first SpiralNet component of second level ofthe assembly. The SpiralNet goes through bar 4, bar 1 and bar 2, stopping for the second SpiralNet component ofthe second level to slide in. Drawing 18 shows the second SpiralNet component ofthe second level as it goes through bar 4, bar 3, and bar 5, stopping for the third SpiralNet component o the same level to slide in. Drawing 19 shows the third SpiralNet component as it goes through bar5, bar 6 and bar8, stopping for the fourth SpiralNet component to slide in, and the first SpiralNet component on the same level goes through all bars including bar 3. Drawing 20 shows the fourth SpiralNet component going through bar 8, bar 7, bar 9 and bar 10, so far the second SpiralNet component will go through bar 6, the third SpiralNet component will go through bar 7, and all SpiralNet component on the second level will go through all bars from 1 to 10 as presented in the drawing. The whole level SpiralNet will be adjacent to the first level at bottom ofthe column. The assembly process shall continue until the whole length of column is full. This method can be used to assemble any special shape column shown in Figure 11 and Figure 12. Similarly, drawing 12, drawing 13 of Figure 19 associated with Figure 13 shows a circular shape SpiralNet and Figure 14 shows its assembly in the column; drawing 14 of Figure 19 associated with Figure 15 shows a pentagon SpiralNet and Figure 16 shows its assembly in the column; drawing 15 of Figure 19 associated with Figure 17 shows a hexagon shape SpiralNet and
Figure 18 shows its assembly in a pentagon shaped column; drawing 16 in Figure 19 shows as 8 bar polygon shaped layout which indicates any multi- side polygon shaped SpiralNet with the same method.
By the use of a number ofthe SpiralNet the concrete column can be assembled in full length in any ofthe above-mentioned cases.

Claims

The claims defining the invention are as follows.
1. A SpiralNet comprising a leading bend (Ts) of 135 degrees and followed with associated bends according to the geometrical shape of each individual concrete column in spiral forms, finished with an ending bend (Te) of 135 degrees as a complete circulation.
2. SpiralNet according to claim 1, comprises "s" bends where "s" is an integer equal to 3 or greater, identically repeating its bends to form each individual component in assisting cage assembly with "s" sides shapes.
3. SpiralNet according to claims 1 and 2, shows the increase angle "Q" is determined by the side "Sh" or "Sw" and the number of side "s".
4. SpiralNet according to claim 1, 2, and 3, shows the spiraled form is not just to keep a geometrical shape for each individual column, but also to provide support to share the load from the main reinforcement rods
5 SpiralNet according to claim 1, 2, 3, and 4 shows whereby that by increasing current diameter of stirrup in any measurement up to and equal or greater than the main reinforcement rods, this will result in taking off part ofthe load from the main reinforcement rods.
6. SpiralNet according to claims 1 to 5, shows whereby taking the load from the main reinforcement rods this will increase the strength of a column without increasing the size ofthe column itself.
7. SpiralNet according to claims 1 to 6, shows that it may be made from any metal or even plastic material.
8. SpiralNet according to the above preceding claims, provides a unique assembly result to form spiraled cages in any shape and length.
. SpiralNet according to claims 1 to 8, shows that any spiraled cage can be prefabricated or assembled on site.
10. SpiralNet is substantially described herein accordance to accompanying drawings.
EP02750656A 2001-09-19 2002-08-02 Spiral ties for reinforced columns Withdrawn EP1427899A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPR7722A AUPR772201A0 (en) 2001-09-19 2001-09-19 Spiralnet
AUPR772201 2001-09-19
PCT/AU2002/001022 WO2003025304A1 (en) 2001-09-19 2002-08-02 Spiral ties for reinforced columns

Publications (2)

Publication Number Publication Date
EP1427899A1 true EP1427899A1 (en) 2004-06-16
EP1427899A4 EP1427899A4 (en) 2009-04-22

Family

ID=3831562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02750656A Withdrawn EP1427899A4 (en) 2001-09-19 2002-08-02 Spiral ties for reinforced columns

Country Status (7)

Country Link
US (1) US20040237449A1 (en)
EP (1) EP1427899A4 (en)
JP (1) JP2005533202A (en)
CN (1) CN1575366A (en)
AU (1) AUPR772201A0 (en)
CA (1) CA2460816A1 (en)
WO (1) WO2003025304A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10337539A1 (en) * 2003-08-06 2005-02-24 Alfredo Jimenez Anguita Spiral-shaped bodies, the i.d.R. Filled, used in geotechnics, gardening and landscaping and / or building construction
WO2006079639A1 (en) * 2005-01-25 2006-08-03 Sidenor Sa Strengthening structure
WO2007019598A1 (en) * 2005-08-19 2007-02-22 University Of Wollongong Reinforced concrete structural members
IT1400333B1 (en) * 2009-11-13 2013-05-24 A W M Spa METHOD AND MACHINE FOR AUTOMATIC ASSEMBLY OF COMPLEX CAGES FORMED BY ELECTROSALDATE METALLIC NETWORKS.
EP2780517B1 (en) * 2011-11-20 2017-11-22 Alexee A. Gulikov Steel reinforcing structure for concrete
KR20150051434A (en) * 2013-11-04 2015-05-13 삼성물산 주식회사 RC Solid Section Column by Triangular Reinforcing Bar Details and Construction Method Thereof
JP6693692B2 (en) * 2014-07-08 2020-05-13 株式会社大林組 Reinforced concrete structure and construction method
CN108571119B (en) * 2017-11-17 2023-10-20 曾彦粤 High-stress-resistance cement column special for rain shelter
TWI767325B (en) * 2020-09-14 2022-06-11 莊玉涵 Non-same-face hook-enhanced double-tie reinforcement method that can improve column axial force and column toughness, finished products built with this method, and tie bars used for this method
CN112227600A (en) * 2020-09-30 2021-01-15 贵州路桥集团有限公司 Double-steel-plate reinforced concrete composite beam

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE269151C (en) *
GB1098068A (en) * 1964-03-06 1968-01-03 Marcel Congy Reinforcement element for beams and columns made from reinforced concrete
FR2076006A1 (en) * 1970-01-09 1971-10-15 British Steel Corp

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU134321A (en) * 1921-04-14 1922-02-13 Wallace Joy. Robert Henry McIntyre Charles An improved hollow reinforced concrete beam
US1572669A (en) * 1924-08-13 1926-02-09 Muller Karl Reenforced-concrete post
FI69179C (en) * 1984-01-24 1985-12-10 Rakennusvalmiste Oy FOERFARANDE FOER TILLVERKNING AV SPIRALARMERINGAR OCH AV DESSABESTAOENDE KOMBINERAD SPIRALMERINGSANORDNING
GR1002860B (en) * 1997-01-03 1998-02-12 Antiseismic spirals for structures.
GR1003706B (en) * 1997-11-05 2001-10-24 Cellular stirrups and ties for structures

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE269151C (en) *
GB1098068A (en) * 1964-03-06 1968-01-03 Marcel Congy Reinforcement element for beams and columns made from reinforced concrete
FR2076006A1 (en) * 1970-01-09 1971-10-15 British Steel Corp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO03025304A1 *

Also Published As

Publication number Publication date
WO2003025304A9 (en) 2004-04-29
CA2460816A1 (en) 2003-03-27
JP2005533202A (en) 2005-11-04
EP1427899A4 (en) 2009-04-22
AUPR772201A0 (en) 2001-10-11
CN1575366A (en) 2005-02-02
WO2003025304A1 (en) 2003-03-27
US20040237449A1 (en) 2004-12-02

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