EP2231954A1 - Method for manufacturing a fiber-reinforced concrete column used in the construction industry, and a fiber-reinforced concrete column - Google Patents

Method for manufacturing a fiber-reinforced concrete column used in the construction industry, and a fiber-reinforced concrete column

Info

Publication number
EP2231954A1
EP2231954A1 EP09701497A EP09701497A EP2231954A1 EP 2231954 A1 EP2231954 A1 EP 2231954A1 EP 09701497 A EP09701497 A EP 09701497A EP 09701497 A EP09701497 A EP 09701497A EP 2231954 A1 EP2231954 A1 EP 2231954A1
Authority
EP
European Patent Office
Prior art keywords
fiber
reinforced concrete
pipe
concrete column
lead
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.)
Granted
Application number
EP09701497A
Other languages
German (de)
French (fr)
Other versions
EP2231954A4 (en
EP2231954B1 (en
Inventor
Markku Heinisuo
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.)
Nordec Oy
Original Assignee
Rautaruukki Oyj
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 Rautaruukki Oyj filed Critical Rautaruukki Oyj
Publication of EP2231954A1 publication Critical patent/EP2231954A1/en
Publication of EP2231954A4 publication Critical patent/EP2231954A4/en
Application granted granted Critical
Publication of EP2231954B1 publication Critical patent/EP2231954B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings

Definitions

  • the object of the invention is a method for manufacturing a fiber-reinforced concrete column used in the construction industry as defined in the preamble of claim 1 , in which method one or more pipes, such as a steel pipe, is brought to a base, and fixed to the aforementioned base, after which the pipe is filled with fiber-reinforced concrete, simultaneously vibrating the concrete and/or the pipe.
  • one or more pipes such as a steel pipe
  • the object of the invention is also a fiber-reinforced concrete column used in the construction industry as defined in the preamble of claim 7, which comprises a pipe, such as a steel pipe, which can be filled with fiber-reinforced concrete.
  • publication JP 11181958 A2 discloses a fiber-reinforced concrete column, in which fiber-reinforced concrete is placed inside a steel pipe, for replacing the reinforcement installed inside the pipe that is conventionally used.
  • Prior-art solutions have a number of drawbacks.
  • fiber-reinforced concrete is conventionally pumped into a pipe, such as e.g. a steel pipe, from the top, as a consequence of which vibration of the fiber-reinforced concrete is awkward to perform owing to the cramped space, because the vibration means are taken inside the pump from the top or the pipe is vibrated from the side from outside it, which is not very effective.
  • performing the vibration is even more awkward if there is bracket reinforcement inside the pipe, especially if the pipe is small in diameter, which is often the case.
  • the purpose of this invention is to achieve a new type of solution, by means of which the drawbacks of prior-art solutions can be avoided.
  • the aim of the invention is therefore to achieve a solution which facilitates and improvestthe efficiency of the manufacture of a fiber-reinforced concrete column, and with which also a practicable and simple solution is achieved for a fiber-reinforced concrete column that is suited for use in the construction industry and can very well be used as a composite column in composite structures.
  • the method according to the invention is mainly characterized by what is disclosed in the characterization part of claim 1.
  • the fiber-reinforced concrete column according to the invention is characterized by what is disclosed in the characterization part of claim 7.
  • the fiber-reinforced concrete column according to the invention is also characterized by what is disclosed in claims 8-18, and 19.
  • the invention is based on the surprising observation that fiber-reinforced concrete can be pumped into a pipe that functions as the mold of a column or as a part of a composite column from the bottom of the pipe such that the fiber-reinforced concrete does not block the lead-in and that the fibers of the fiber-reinforced concrete do not spheroidize and the fibers remain evenly distributed in the concrete also after pumping into the pipe.
  • the solution according to the invention has a number of important advantages. In the solution according to the invention it is easy to perform vibration of the fiber-reinforced concrete from the top of the pipe, because the vibration means can easily be taken into the pipe without obstacle since the fiber- reinforced concrete can be put into the pipe via the coupling in the bottom part of the pipe.
  • getting the fiber-reinforced concrete into the pipe from the bottom part of the pipe is easier to perform in worksite conditions than filling of the pipe that occurs from the top, because access to the coupling is easy.
  • Performing the vibration from the top also helps in compacting the fiber-reinforced concrete.
  • an even distribution of fiber-reinforced concrete is achieved, and this has a strengthening effect on the structure.
  • the solution according to the invention can also be easily connected to prior-art solutions, in which e.g. bracket reinforcements or corresponding are placed inside the pipe.
  • the fiber-reinforced concrete column according to the invention is extremely well suited for use as a composite structure, i.e. as a composite column in 1 -story or multistory construction, e.g. in office premises construction or industrial facilities construction.
  • Fig. 1A presents a fiber-reinforced concrete column according to the invention.
  • Fig. 1 B presents a front view of a fiber-reinforced concrete column according to the invention and the coupling on it.
  • Fig. 2 presents a fiber-reinforced concrete column according to the invention and the use of it as a composite column in a composite structure.
  • a pipe 6 as presented by Fig. 1A such as a steel pipe or corresponding, is fixed to a base 3.
  • the pipe can be fixed to the base with screws, by welding or with another applicable method that is already knowm.
  • Fiber-reinforced concrete 2 is fed into the pipe that is fixed to the base, which fiber-reinforced concrete is fed into the pipe via a movable coupling piece 4 on the bottom part of the pipe, on the side of it.
  • the lead-in in connection with the coupling piece, which lead-in is formed on the pipe, is described with the reference number 7.
  • the coupling piece can be moved in the vertical direction of the pipe (or possibly in the lateral direction of the pipe) such that the lead-in 7 can be covered with it, in which case the fiber-reinforced concrete inside the pipe cannot get out of the pipe 6.
  • the pipe 6 can comprise one or more brackets 5, to which bracket and/or pipe connectable structures, such as composite beams or other structures, can be connected.
  • the bracket 5 is formed on the pipe such that it fills with fiber-reinforced concrete when the pipe is filled. Filling the bracket with fiber-reinforced concrete strengthens the bracket.
  • Reinforcement that is conventionally used, such as steel bar reinforcement, can be fitted inside the pipe 6, such as a steel pipe, but this is not marked in the figure.
  • the coupling piece according to Fig. 1B which is on the bottom part of the pipe, is disposed in connection with the lead-in 7, which lead-in is formed in the pipe 6.
  • the coupling piece can be moved in the vertical direction of the pipe as is marked in the figure (or alternatively also in the lateral direction) because the coupling piece comprises slots 8, and screws 9 or corresponding are fixed to the pipe, which are fitted into the slots such that the coupling piece is able to move to the extent of the slots.
  • the coupling piece can also be fixed tightly against the pipe with the screws, to a location above the lead-in such that the coupling piece covers the lead-in, and that the fiber-reinforced concrete in the pipe is not able to flow out via the lead-in.
  • the pipe can be fixed to the base with screws, by welding or with some other applicable method.
  • Filling the pipe with fiber-reinforced concrete occurs such that the pipe is filled by pumping fiber-reinforced concrete into the pipe via the lead-in 7 in the bottom part of the pipe, in connection with which lead-in a movable coupling piece 4 is fitted, and after the pipe is filled with fiber-reinforced concrete the lead-in is closed with the coupling piece.
  • Closing the lead-in occurs such that the coupling piece is moved in the vertical and/or the lateral direction, in which case the coupling piece blocks the lead-in.
  • the vibration performed for compacting the fiber-reinforced concrete occurs via the top end of the pipe, by taking the vibration means (not shown) inside the pipe from the top.
  • the vibration can also, however, take place by vibrating from outside the pipe, or alternatively by taking the vibration means inside the pipe via the lead-in 7.
  • Fig. 2 presents in a simplified manner the use of the fiber-reinforced concrete column according to the invention as a composite column, in which a number of fiber- reinforced concrete columns function as a composite column.
  • Connectable structures such as beams 10 can be fitted to the column in the desired phase, even before the filling of the pipes with fiber-reinforced concrete, or after it.
  • the filling of the pipes with fiber-reinforced concrete is easy when the casting coupling 4 is disposed in the bottom part of the pipe.
  • the bar reinforcement which will be inside the pipe and the beam, is marked with the reference number 11.
  • Connectable structures, such as beams 10 are such that the fiber-reinforced concrete pumped into the pipe 6 is able to pass into them via the pipe (or possibly via the bracket in the pipe), and this strengthens the joint between the connectable structures and the pipe (column), however for the sake of clarity this aspect is not marked in the figure.
  • the length of the fiber used in the fiber-reinforced concrete is smaller than 60 mm, and preferably 25 - 35 mm, and the consistency class of the fiber-reinforced concrete used is S3 - S4 (according to BY50 concrete code 2004).
  • the particle size of the fiber-reinforced concrete is 16 mm or smaller, preferably 12 mm.
  • the fibers of the fiber-reinforced concrete can be steel fibers, carbon fibers, glass fibers, plastic fibers, or formed with a combination of the aforementioned.
  • the fibers used can also be not yet used or known, and possible fibers to be developed in the future.
  • the strength grade of the fiber-reinforced concrete used to fill the pipe is between K30 - K60 (according to BY50 concrete code 2004).
  • the amount of fibers in the concrete can vary according to need, but preferably 30- 45 kg of fibers are put into one cubic meter of concrete (30-45 kg fibers/m 3 concrete).
  • the pipe that is filled with fiber-reinforced concrete and used in the invention is generally a cross-sectionally round model, but it can however also be some other model, i.e. a rectangular, triangular, elliptical or some other closed cross-section.
  • the material of the pipe can be formed from steel or some other metal, or from a combination of different metals.
  • the length of the fiber of the fiber-reinforced concrete used in the invention is essentially substantially shorter than the diameter of the lead-in, from where the fiber- reinforced concrete is placed into the pipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The invention relates to a method for manufacturing a fiber-reinforced concrete column (1 ) used in the construction industry, in which method one or more pipes (6), such as a steel pipe, is brought to a base (3), and fixed to the aforementioned base, after which the pipe is filled with fiber-reinforced concrete (2), simultaneously vibrating the concrete and/or the pipe, and in which method the pipe is filled with fiber-reinforced concrete via a lead-in (7) in the bottom part of the pipe. The invention also relates to a fiber-reinforced concrete column.

Description

Method for manufacturing a fiber-reinforced concrete column used in the construction industry, and a fiber-reinforced concrete column
The object of the invention is a method for manufacturing a fiber-reinforced concrete column used in the construction industry as defined in the preamble of claim 1 , in which method one or more pipes, such as a steel pipe, is brought to a base, and fixed to the aforementioned base, after which the pipe is filled with fiber-reinforced concrete, simultaneously vibrating the concrete and/or the pipe.
The object of the invention is also a fiber-reinforced concrete column used in the construction industry as defined in the preamble of claim 7, which comprises a pipe, such as a steel pipe, which can be filled with fiber-reinforced concrete.
Different solutions for manufacturing a fiber-reinforced concrete column are known, and different fiber-reinforced concrete columns are also known.
For example, publication JP 11181958 A2 discloses a fiber-reinforced concrete column, in which fiber-reinforced concrete is placed inside a steel pipe, for replacing the reinforcement installed inside the pipe that is conventionally used.
Prior-art solutions have a number of drawbacks. In prior-art solutions fiber-reinforced concrete is conventionally pumped into a pipe, such as e.g. a steel pipe, from the top, as a consequence of which vibration of the fiber-reinforced concrete is awkward to perform owing to the cramped space, because the vibration means are taken inside the pump from the top or the pipe is vibrated from the side from outside it, which is not very effective. In particular, performing the vibration is even more awkward if there is bracket reinforcement inside the pipe, especially if the pipe is small in diameter, which is often the case.
The purpose of this invention is to achieve a new type of solution, by means of which the drawbacks of prior-art solutions can be avoided. The aim of the invention is therefore to achieve a solution which facilitates and improvestthe efficiency of the manufacture of a fiber-reinforced concrete column, and with which also a practicable and simple solution is achieved for a fiber-reinforced concrete column that is suited for use in the construction industry and can very well be used as a composite column in composite structures.
Brief description of the invention
The method according to the invention is mainly characterized by what is disclosed in the characterization part of claim 1.
The method according to the invention is also characterized by what is disclosed in claims 2-6, 20.
The fiber-reinforced concrete column according to the invention is characterized by what is disclosed in the characterization part of claim 7.
The fiber-reinforced concrete column according to the invention is also characterized by what is disclosed in claims 8-18, and 19.
The invention is based on the surprising observation that fiber-reinforced concrete can be pumped into a pipe that functions as the mold of a column or as a part of a composite column from the bottom of the pipe such that the fiber-reinforced concrete does not block the lead-in and that the fibers of the fiber-reinforced concrete do not spheroidize and the fibers remain evenly distributed in the concrete also after pumping into the pipe. The solution according to the invention has a number of important advantages. In the solution according to the invention it is easy to perform vibration of the fiber-reinforced concrete from the top of the pipe, because the vibration means can easily be taken into the pipe without obstacle since the fiber- reinforced concrete can be put into the pipe via the coupling in the bottom part of the pipe. In addition, getting the fiber-reinforced concrete into the pipe from the bottom part of the pipe is easier to perform in worksite conditions than filling of the pipe that occurs from the top, because access to the coupling is easy. Performing the vibration from the top also helps in compacting the fiber-reinforced concrete. With the solution according to the invention an even distribution of fiber-reinforced concrete is achieved, and this has a strengthening effect on the structure.
The solution according to the invention can also be easily connected to prior-art solutions, in which e.g. bracket reinforcements or corresponding are placed inside the pipe.
The fiber-reinforced concrete column according to the invention is extremely well suited for use as a composite structure, i.e. as a composite column in 1 -story or multistory construction, e.g. in office premises construction or industrial facilities construction.
Brief description of the figures
In the following, the invention will be described in more detail by the aid of an embodiment with reference to the attached drawings, wherein
Fig. 1A presents a fiber-reinforced concrete column according to the invention. Fig. 1 B presents a front view of a fiber-reinforced concrete column according to the invention and the coupling on it.
Fig. 2 presents a fiber-reinforced concrete column according to the invention and the use of it as a composite column in a composite structure.
Detailed description of the invention
A pipe 6 as presented by Fig. 1A, such as a steel pipe or corresponding, is fixed to a base 3. The pipe can be fixed to the base with screws, by welding or with another applicable method that is already knowm. Fiber-reinforced concrete 2 is fed into the pipe that is fixed to the base, which fiber-reinforced concrete is fed into the pipe via a movable coupling piece 4 on the bottom part of the pipe, on the side of it. The lead-in in connection with the coupling piece, which lead-in is formed on the pipe, is described with the reference number 7. The coupling piece can be moved in the vertical direction of the pipe (or possibly in the lateral direction of the pipe) such that the lead-in 7 can be covered with it, in which case the fiber-reinforced concrete inside the pipe cannot get out of the pipe 6.
The pipe 6 can comprise one or more brackets 5, to which bracket and/or pipe connectable structures, such as composite beams or other structures, can be connected. The bracket 5 is formed on the pipe such that it fills with fiber-reinforced concrete when the pipe is filled. Filling the bracket with fiber-reinforced concrete strengthens the bracket.
Reinforcement that is conventionally used, such as steel bar reinforcement, can be fitted inside the pipe 6, such as a steel pipe, but this is not marked in the figure.
The coupling piece according to Fig. 1B, which is on the bottom part of the pipe, is disposed in connection with the lead-in 7, which lead-in is formed in the pipe 6. The coupling piece can be moved in the vertical direction of the pipe as is marked in the figure (or alternatively also in the lateral direction) because the coupling piece comprises slots 8, and screws 9 or corresponding are fixed to the pipe, which are fitted into the slots such that the coupling piece is able to move to the extent of the slots. The coupling piece can also be fixed tightly against the pipe with the screws, to a location above the lead-in such that the coupling piece covers the lead-in, and that the fiber-reinforced concrete in the pipe is not able to flow out via the lead-in.
In the method according to the invention for manufacturing a fiber-reinforced concrete column 1 , one or more pipes 6, such as a steel pipe, is brought to a base 3, and is also fixed to the aforementioned base, after which the pipe is filled with fiber- reinforced concrete 2, simultaneously vibrating the concrete and/or the pipe. The pipe can be fixed to the base with screws, by welding or with some other applicable method. Filling the pipe with fiber-reinforced concrete occurs such that the pipe is filled by pumping fiber-reinforced concrete into the pipe via the lead-in 7 in the bottom part of the pipe, in connection with which lead-in a movable coupling piece 4 is fitted, and after the pipe is filled with fiber-reinforced concrete the lead-in is closed with the coupling piece. Closing the lead-in occurs such that the coupling piece is moved in the vertical and/or the lateral direction, in which case the coupling piece blocks the lead-in. The vibration performed for compacting the fiber-reinforced concrete occurs via the top end of the pipe, by taking the vibration means (not shown) inside the pipe from the top. The vibration can also, however, take place by vibrating from outside the pipe, or alternatively by taking the vibration means inside the pipe via the lead-in 7.
Fig. 2 presents in a simplified manner the use of the fiber-reinforced concrete column according to the invention as a composite column, in which a number of fiber- reinforced concrete columns function as a composite column.
Connectable structures, such as beams 10, can be fitted to the column in the desired phase, even before the filling of the pipes with fiber-reinforced concrete, or after it. Especially in multistory construction, such as is presented in the figure, the filling of the pipes with fiber-reinforced concrete is easy when the casting coupling 4 is disposed in the bottom part of the pipe. The bar reinforcement, which will be inside the pipe and the beam, is marked with the reference number 11. Connectable structures, such as beams 10, are such that the fiber-reinforced concrete pumped into the pipe 6 is able to pass into them via the pipe (or possibly via the bracket in the pipe), and this strengthens the joint between the connectable structures and the pipe (column), however for the sake of clarity this aspect is not marked in the figure. By using a number of fiber-reinforced concrete columns according to the invention, and the structures connectable to them, it is easy to form complete supporting frames and constructions of buildings in a practicable and efficient way (possibility to form supporting frames with just a single casting).
Different admixtures, such as water-reducing agents, accelerators or retarders, can if necessary, be added to the fiber-reinforced concrete used in the solution according to the invention.
The length of the fiber used in the fiber-reinforced concrete is smaller than 60 mm, and preferably 25 - 35 mm, and the consistency class of the fiber-reinforced concrete used is S3 - S4 (according to BY50 concrete code 2004). The particle size of the fiber-reinforced concrete is 16 mm or smaller, preferably 12 mm. The fibers of the fiber-reinforced concrete can be steel fibers, carbon fibers, glass fibers, plastic fibers, or formed with a combination of the aforementioned. The fibers used can also be not yet used or known, and possible fibers to be developed in the future. In the invention the strength grade of the fiber-reinforced concrete used to fill the pipe is between K30 - K60 (according to BY50 concrete code 2004). The amount of fibers in the concrete can vary according to need, but preferably 30- 45 kg of fibers are put into one cubic meter of concrete (30-45 kg fibers/m3 concrete).
It is obvious to the person skilled in the art that the invention is not limited to the embodiments presented above, but that it can be varied within the scope of the claims presented below. The characteristic features possibly presented in the description in conjunction with other characteristic features can if necessary be used separately to each other.
It is possible to fit inside the pipe used in the invention reinforcements that are in themselves already known and used, such as e.g. steel bar reinforcement or some other corresponding reinforcement for strengthening the structure of the column. The pipe that is filled with fiber-reinforced concrete and used in the invention is generally a cross-sectionally round model, but it can however also be some other model, i.e. a rectangular, triangular, elliptical or some other closed cross-section. The material of the pipe can be formed from steel or some other metal, or from a combination of different metals. The length of the fiber of the fiber-reinforced concrete used in the invention is essentially substantially shorter than the diameter of the lead-in, from where the fiber- reinforced concrete is placed into the pipe.
The solution according to the invention, in which fiber-reinforced concrete is put inside a pipe (or into some other structural element) by pumping it from the bottom upwards can also be applied to cellularly-structured wall elements.

Claims

1. Method for manufacturing a fiber-reinforced concrete column (1) used in the construction industry, in which method one or more pipes (6), such as a steel pipe, is brought to a base (3), and fixed to the aforementioned base, after which the pipe is filled with fiber-reinforced concrete (2), simultaneously vibrating the concrete and/or the pipe, characterized in that the pipe is filled with fiber-reinforced concrete via a lead-in (7) in the bottom part of the pipe (6), which lead-in is on the side of the pipe, and in that vibration of the pipe is performed from the top of the pipe.
2. Method according to claim 1 for manufacturing a fiber-reinforced concrete column, characterized in that a movable coupling piece (4) is fitted in connection with the lead-in, and in that after the pipe is filled with fiber-reinforced concrete the lead-in is closed by moving the coupling piece.
3. Method according to claim 1 or 2 for manufacturing a fiber-reinforced concrete column, characterized in that connectable structures (10), such as beams, are fitted to the column.
4. Method according to claim 1 for manufacturing a fiber-reinforced concrete column, characterized in that the fiber-reinforced concrete and/or the pipe is vibrated from outside and/or from inside the pipe for compacting the fiber-reinforced concrete.
5. Method according to claim 1 for manufacturing a fiber-reinforced concrete column, characterized in that reinforcement (11), such as a steel bar reinforcement, is fitted inside the steel pipe.
6. Method according to claim 2 for manufacturing a fiber-reinforced concrete column, characterized in that the coupling piece is moved in the vertical and/or the lateral direction over the lead-in, for closing the lead-in.
7. Fiber-reinforced concrete column (1) used in the construction industry, which comprises a pipe (6), such as a steel pipe, which can be filled with fiber-reinforced concrete (2), characterized in that on the bottom part of the pipe, on the side of it, is a lead-in (7) for filling the pipe with fiber-reinforced concrete from the bottom part of the pipe, and in that a movable coupling piece (4) is in connection with the lead-in for closing the lead-in.
8. Fiber-reinforced concrete column according to claim 7, characterized in that a detachable coupling piece (4) is on the bottom part of the pipe, on the side of it, for closing the lead-in.
9. Fiber-reinforced concrete column according to claim 8, characterized in that the coupling piece can be moved in the vertical direction of the pipe.
10. Fiber-reinforced concrete column according to claim 9, characterized in that the coupling piece can be moved in the lateral direction of the pipe.
11. Fiber-reinforced concrete column according to claim 7, characterized in that the particle size of the fiber-reinforced concrete is 12 mm or smaller.
12. Fiber-reinforced concrete column according to claim 7, characterized in that the strength grade of the fiber-reinforced concrete is between K30 - K60.
13. Fiber-reinforced concrete column according to claim 7, characterized in that reinforcement (11 ), such as a steel bar reinforcement, is fitted inside the steel pipe.
14. Fiber-reinforced concrete column according to claim 7, characterized in that the length of the fiber in the fiber-reinforced concrete is smaller than 60 mm, preferably
25 - 35 mm.
15. Fiber-reinforced concrete column according to claim 7, characterized in that the fiber-reinforced concrete contains 30 - 45 kg/m3 of fiber.
16. Fiber-reinforced concrete column according to claim 7, characterized in that the consistency class of the fiber-reinforced concrete column is S3 - S4.
17. Fiber-reinforced concrete column according to claim 7, characterized in that the pipe comprises one or more brackets (5).
18. Fiber-reinforced concrete column according to claim 7, characterized in that one or more connectable structures (10), such as a beam, can be fitted to the fiber- reinforced concrete column.
19. Fiber-reinforced concrete column according to claim 7, characterized the length of the fiber of the fiber-reinforced concrete is essentially shorter than the diameter of the lead-in.
20. Method according to claim 1 for manufacturing a fiber-reinforced concrete column, characterized in that the length of the fiber of the fiber-reinforced concrete used is essentially shorter than the diameter of the lead-in
EP09701497.1A 2008-01-14 2009-01-13 Method for manufacturing a fiber-reinforced concrete column used in the construction industry Active EP2231954B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20085029A FI20085029L (en) 2008-01-14 2008-01-14 Method for producing a fiber concrete column to be used in the construction industry and fiber concrete columns
PCT/FI2009/050017 WO2009090301A1 (en) 2008-01-14 2009-01-13 Method for manufacturing a fiber-reinforced concrete column used in the construction industry, and a fiber-reinforced concrete column

Publications (3)

Publication Number Publication Date
EP2231954A1 true EP2231954A1 (en) 2010-09-29
EP2231954A4 EP2231954A4 (en) 2016-07-27
EP2231954B1 EP2231954B1 (en) 2020-07-01

Family

ID=39004329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09701497.1A Active EP2231954B1 (en) 2008-01-14 2009-01-13 Method for manufacturing a fiber-reinforced concrete column used in the construction industry

Country Status (3)

Country Link
EP (1) EP2231954B1 (en)
FI (1) FI20085029L (en)
WO (1) WO2009090301A1 (en)

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
GB1507450A (en) * 1974-06-07 1978-04-12 British Steel Corp Structural members
CA1300920C (en) * 1987-09-18 1992-05-19 Yasukazu Nakamura Concrete filled tube column and method of constructing same
JPH0598738A (en) * 1991-10-08 1993-04-20 Asahi Chem Ind Co Ltd Filling type steel pipe concrete pole body
JPH116199A (en) 1997-06-13 1999-01-12 Tomoe Corp Trussed frame
JPH1161999A (en) * 1997-08-11 1999-03-05 Kajima Corp Steel pipe-concrete column
JPH11181958A (en) 1997-12-18 1999-07-06 Taisei Corp Concrete-filled steel pipe member, and construction method thereof
JP2003003567A (en) 2001-06-20 2003-01-08 Nkk Corp Work execution method for steel pipe column filled with concrete
US7568286B2 (en) 2001-08-22 2009-08-04 Meritor Heavy Vehicle Technology, Llc Method of forming a tubular axle
JP4228119B2 (en) * 2004-01-13 2009-02-25 五洋建設株式会社 Concrete filling method in concrete filling steel pipe construction method and concrete filling steel pipe used in the method.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009090301A1 *

Also Published As

Publication number Publication date
FI20085029L (en) 2009-07-15
EP2231954A4 (en) 2016-07-27
EP2231954B1 (en) 2020-07-01
WO2009090301A1 (en) 2009-07-23
FI20085029A0 (en) 2008-01-14

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