CA2564519C - Grooved stiffened profile - Google Patents
Grooved stiffened profile Download PDFInfo
- Publication number
- CA2564519C CA2564519C CA2564519A CA2564519A CA2564519C CA 2564519 C CA2564519 C CA 2564519C CA 2564519 A CA2564519 A CA 2564519A CA 2564519 A CA2564519 A CA 2564519A CA 2564519 C CA2564519 C CA 2564519C
- Authority
- CA
- Canada
- Prior art keywords
- sidewalls
- central part
- outer sections
- channel
- lateral sides
- 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.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
- E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
- E04C2003/0421—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section comprising one single unitary part
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
- E04C2003/0434—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the open cross-section free of enclosed cavities
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0473—U- or C-shaped
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
A shaped metal beam is described, having a generally C-shaped profile which includes a central part, opposed sidewalls extending along the lateral sides of the central part, and opposed flanges extending from the sidewalls comprising inwardly-turned walls opposed to and parallel to the central part. The central part, sidewalls and flanges define a hollow interior open to one side. The central part and the sidewalls each comprise first and second flat outer sections adjacent to the lateral sides thereof, the flat outer sections being co-planar, and a third section intermediate between the lateral sides. The third section comprises a central channel recessed towards the interior of the beam having a flat floor and non-parallel, converging channel sidewalls. The width of the respect outer sections and channel may all be substantially equal within each of the central part and sidewalls.
Description
GROOVED STIFFENED PROFILE
SCOPE OF THE INVENTION
This is a new grooved stiffened profile with mechanical characteristics superior to already known structural profiles, that can be used in building frameworks for roofing or large architectural vaults, that efficiently supports dead weight.
The qualities of its maximum work stress notoriously compete with conventional profiles because of the stiffeners included in it. Additionally, the weight per lineal meter is less than the first, which makes this invention a versatile profile for building roof frameworks and wide vaults.
Therefore, the scope of the invention is subscribed to the universe of structural profiles used in building frames.
HISTORY OF THE INVENTION
In Mexico, as well as in other countries, roofs are built on constructions that have no intermediary supports, and outside walls or columns that are separated more than 10 m (40 feet); therefore, and for economic reasons, builders resort to the use of a structural system other than simply supported beams. The structural configuration used for this purpose is called a roof framework; a framework is a structural configuration of elements normally supported at the ends and formed by a series of elements, normally straight, laid out in a certain order and connected one to another, in such manner that stress transmitted from one element to another is the same or is uniformly distributed. As a triangle is the only polygon with a form that can be geometrically modified without changing the length of one or more of its sides, the framework essentially consists of a system of triangles.
In steel frameworks it is common practice that angles be connected among themselves by a connecting plate and rivets, screws and nuts, or welding, forming rigid connections; the stability of a framework does not depend on the rigidity of its joints.
We know that steel profiles have been greatly substituting other elements such as wood, mainly because longer open spaces can be built with steel.
Steel structural profiles most frequently used in the construction of buildings are beams with (WF) wide flanges;
standard I beams, grooved sections, angles and plates.
After numerous investigations, a profile has been developed with the technical and mechanical characteristics of the conventional profiles described, but featured for being stiffened, which provides it more rigidity, and appears as an element that supports more loads, and therefore, the same stress as a conventional profile CA 02.51519 2006-10-23 support; with the use of the profile being proposed; this profile supports more stress, which permits us to reduce weight and build structures with wider open spaces.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a sectional view of the stiffened profile;
FIG. 2 is a perspective of the stiffened profile.
DESCRIPTION OF THE INVENTION
Referring to the drawings described above, the stiffened profile of this invention is formed by a machined part (10) in a grooved form, that fundamentally includes a central part (20), some flanges (12) located in the upper and lower parts and some finished ends (30), placed at the ends of the machined part (10).
These flanges (12) or sides consist of a flat surface, divided into three parts or sections: a first section (14) with a flat surface, joined at one end to the central part (20) by means of a bend (22), that with respect to the central part (20) is placed at a ninety degree angle, and at the other end, with a bend (24) to an intermediate section (16) with a flat surface, displaced from the axis of the flanges (12), and forming the stiffened section, followed by a second bend (26) to a third section (18) with a flat surface, that is placed at the same level as the first section (14) followed by a bend (28) with one of the finished ends (30), in such manner that these are at a ninety degree angle from the flanges (12), the axis of the section (16) which, because of the bends, is displaced from the central part of the first section (14) and of the third section (18), in such manner that the middle section (16) will be parallel to those sections.
On the other hand, the central part (20) that also has a flat surface, consists of three sections: a first section (32) with a flat surface, joined at the upper end to the bend (22) of the top flange (12), that will be at a ninety degree angle, to continue on to a middle section (34) with a flat surface, which is displaced from the axis of the central part (20), forming the stiffened section, and joined through some bends (38), followed by a third section similar to the first (36) with a flat surface, placed at the same level as the first section (32), ending with a second bend (22) at the lower flange (12) that will be at a ninety degree angle with respect to the central part (20).
Finally, the finished ends (30) of the machined part (10) consist of a flat and short-sized part at a ninety degree angle with respect to the flanges, serving both as an extremity and as base, and joint for a similar profile meeting it, thus duplicating the resistance of the profile.
THE BEST MANNER OF CARRYING OUT THE INVENTION
To form the profile described above, a shaping or rolling machine will be necessary, whereby, through various steps, the necessary bends will be made until the 5 complete figure of the profile is obtained. A quality material with an adequate thickness must be used in order that it submit to bending in every step in the shaping machine without cracking or being damaged.
When using a shaping machine and not a bending press, one must be sure that the finished product will have the shape and measurements required in each of the sizes to be produced. With such production equipment one can also obtain prefabricated parts cut to size.
5a SUMMARY OF THE INVENTION
According to one aspect, the invention relates to a formed metal beam having a generally C-shaped profile which includes a central part, opposed sidewalls extending along the lateral sides of the central part, and opposed flanges extending from the sidewalls comprising inwardly-turned walls opposed to and parallel to the central part. The central part, sidewalls and flanges define a hollow interior open to one side. The central part and the sidewalls each comprise first and second flat outer sections adjacent to the lateral sides thereof, the flat outer sections being co-planar, and a third section intermediate between the lateral sides. The third section comprises a central channel recessed towards the interior of the beam having a flat floor and non-parallel, converging channel sidewalls. The width of the respect outer sections and channel may all be substantially equal within each of the central part and sidewalls.
In another aspect, the beam has smoothly curved bends of 90 degrees where the central part joins with the sidewalls and the sidewalls join with the flanges.
In another aspect, the invention relates to method of forming a beam as described herein, comprising the steps of providing a flat metal blank, and forming the beam by shaping the blank with a rolling machine or shaping machine in a plurality of rolling or shaping operations.
SCOPE OF THE INVENTION
This is a new grooved stiffened profile with mechanical characteristics superior to already known structural profiles, that can be used in building frameworks for roofing or large architectural vaults, that efficiently supports dead weight.
The qualities of its maximum work stress notoriously compete with conventional profiles because of the stiffeners included in it. Additionally, the weight per lineal meter is less than the first, which makes this invention a versatile profile for building roof frameworks and wide vaults.
Therefore, the scope of the invention is subscribed to the universe of structural profiles used in building frames.
HISTORY OF THE INVENTION
In Mexico, as well as in other countries, roofs are built on constructions that have no intermediary supports, and outside walls or columns that are separated more than 10 m (40 feet); therefore, and for economic reasons, builders resort to the use of a structural system other than simply supported beams. The structural configuration used for this purpose is called a roof framework; a framework is a structural configuration of elements normally supported at the ends and formed by a series of elements, normally straight, laid out in a certain order and connected one to another, in such manner that stress transmitted from one element to another is the same or is uniformly distributed. As a triangle is the only polygon with a form that can be geometrically modified without changing the length of one or more of its sides, the framework essentially consists of a system of triangles.
In steel frameworks it is common practice that angles be connected among themselves by a connecting plate and rivets, screws and nuts, or welding, forming rigid connections; the stability of a framework does not depend on the rigidity of its joints.
We know that steel profiles have been greatly substituting other elements such as wood, mainly because longer open spaces can be built with steel.
Steel structural profiles most frequently used in the construction of buildings are beams with (WF) wide flanges;
standard I beams, grooved sections, angles and plates.
After numerous investigations, a profile has been developed with the technical and mechanical characteristics of the conventional profiles described, but featured for being stiffened, which provides it more rigidity, and appears as an element that supports more loads, and therefore, the same stress as a conventional profile CA 02.51519 2006-10-23 support; with the use of the profile being proposed; this profile supports more stress, which permits us to reduce weight and build structures with wider open spaces.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a sectional view of the stiffened profile;
FIG. 2 is a perspective of the stiffened profile.
DESCRIPTION OF THE INVENTION
Referring to the drawings described above, the stiffened profile of this invention is formed by a machined part (10) in a grooved form, that fundamentally includes a central part (20), some flanges (12) located in the upper and lower parts and some finished ends (30), placed at the ends of the machined part (10).
These flanges (12) or sides consist of a flat surface, divided into three parts or sections: a first section (14) with a flat surface, joined at one end to the central part (20) by means of a bend (22), that with respect to the central part (20) is placed at a ninety degree angle, and at the other end, with a bend (24) to an intermediate section (16) with a flat surface, displaced from the axis of the flanges (12), and forming the stiffened section, followed by a second bend (26) to a third section (18) with a flat surface, that is placed at the same level as the first section (14) followed by a bend (28) with one of the finished ends (30), in such manner that these are at a ninety degree angle from the flanges (12), the axis of the section (16) which, because of the bends, is displaced from the central part of the first section (14) and of the third section (18), in such manner that the middle section (16) will be parallel to those sections.
On the other hand, the central part (20) that also has a flat surface, consists of three sections: a first section (32) with a flat surface, joined at the upper end to the bend (22) of the top flange (12), that will be at a ninety degree angle, to continue on to a middle section (34) with a flat surface, which is displaced from the axis of the central part (20), forming the stiffened section, and joined through some bends (38), followed by a third section similar to the first (36) with a flat surface, placed at the same level as the first section (32), ending with a second bend (22) at the lower flange (12) that will be at a ninety degree angle with respect to the central part (20).
Finally, the finished ends (30) of the machined part (10) consist of a flat and short-sized part at a ninety degree angle with respect to the flanges, serving both as an extremity and as base, and joint for a similar profile meeting it, thus duplicating the resistance of the profile.
THE BEST MANNER OF CARRYING OUT THE INVENTION
To form the profile described above, a shaping or rolling machine will be necessary, whereby, through various steps, the necessary bends will be made until the 5 complete figure of the profile is obtained. A quality material with an adequate thickness must be used in order that it submit to bending in every step in the shaping machine without cracking or being damaged.
When using a shaping machine and not a bending press, one must be sure that the finished product will have the shape and measurements required in each of the sizes to be produced. With such production equipment one can also obtain prefabricated parts cut to size.
5a SUMMARY OF THE INVENTION
According to one aspect, the invention relates to a formed metal beam having a generally C-shaped profile which includes a central part, opposed sidewalls extending along the lateral sides of the central part, and opposed flanges extending from the sidewalls comprising inwardly-turned walls opposed to and parallel to the central part. The central part, sidewalls and flanges define a hollow interior open to one side. The central part and the sidewalls each comprise first and second flat outer sections adjacent to the lateral sides thereof, the flat outer sections being co-planar, and a third section intermediate between the lateral sides. The third section comprises a central channel recessed towards the interior of the beam having a flat floor and non-parallel, converging channel sidewalls. The width of the respect outer sections and channel may all be substantially equal within each of the central part and sidewalls.
In another aspect, the beam has smoothly curved bends of 90 degrees where the central part joins with the sidewalls and the sidewalls join with the flanges.
In another aspect, the invention relates to method of forming a beam as described herein, comprising the steps of providing a flat metal blank, and forming the beam by shaping the blank with a rolling machine or shaping machine in a plurality of rolling or shaping operations.
Claims (5)
1. A formed metal beam having a generally C-shaped profile comprising a central part, opposed sidewalls extending along the lateral sides of said central part, and opposed flanges extending from said sidewalls comprising inwardly-turned walls opposed to and parallel to said central part, said central part, sidewalls and flanges defining a hollow interior open to one side, said central part and said sidewalls each comprising first and second flat outer sections adjacent to the lateral sides thereof, said flat outer sections being co-planar, and a third section intermediate between said lateral sides, said third section comprising a central channel recessed towards the interior of said beam having a flat floor and non-parallel, converging channel sidewalls.
2. The beam of claim 1 comprising smoothly curved bends of 90 degrees where said central part joins with said sidewalls and said sidewalls join with said flanges.
3. The beam of claim 1 wherein the transverse width of the outer sections of the central part and the transverse width of the floor of the channel of said central part are substantially equal.
4. The beam of claim 1 wherein the transverse width of the outer sections of the sidewalls and the transverse width of the floor of the channel of said sidewalls are substantially equal.
5. A method of forming the beam of any one of claims 1-4, comprising the steps of providing a flat metal blank, and forming said beam by shaping the blank with a rolling machine or shaping machine in a plurality of rolling or shaping operations.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/MX2004/000029 WO2005106317A1 (en) | 2004-04-29 | 2004-04-29 | Stiffened channel |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2564519A1 CA2564519A1 (en) | 2005-11-10 |
CA2564519C true CA2564519C (en) | 2014-01-28 |
Family
ID=35198071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2564519A Expired - Fee Related CA2564519C (en) | 2004-04-29 | 2004-04-29 | Grooved stiffened profile |
Country Status (7)
Country | Link |
---|---|
US (1) | US20050241261A1 (en) |
EP (1) | EP1748247A1 (en) |
JP (1) | JP2007534868A (en) |
CN (1) | CN1961177A (en) |
BR (1) | BRPI0418734A (en) |
CA (1) | CA2564519C (en) |
WO (1) | WO2005106317A1 (en) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2002952221A0 (en) * | 2002-10-23 | 2002-11-07 | Grant Charlwood | A beam |
US20070095002A1 (en) * | 2005-10-28 | 2007-05-03 | Kim-Whitty Suk K | Nx steel lumber |
US8285407B2 (en) * | 2007-10-25 | 2012-10-09 | The Boeing Company | Method and apparatus for composite part data extraction |
US8442804B2 (en) * | 2007-10-25 | 2013-05-14 | The Boeing Company | Method and apparatus for composite part data extraction |
US8620627B2 (en) * | 2009-10-13 | 2013-12-31 | The Boeing Company | Composite information display for a part |
CN102312483B (en) * | 2010-06-30 | 2013-12-25 | 谢英俊 | Square light steel member with reinforcement parts |
US8652606B2 (en) | 2010-08-17 | 2014-02-18 | The Boeing Company | Composite structures having composite-to-metal joints and method for making the same |
US8993084B2 (en) | 2010-08-17 | 2015-03-31 | The Boeing Company | Multi-layer metallic structure and composite-to-metal joint methods |
US9522512B2 (en) | 2010-08-17 | 2016-12-20 | The Boeing Company | Methods for making composite structures having composite-to-metal joints |
CN102900199A (en) * | 2012-10-30 | 2013-01-30 | 林泽明 | C type steel provided with reinforcement fins for building steel structure |
US9249622B1 (en) * | 2013-09-18 | 2016-02-02 | Premium Garage Door Hardware Inc. | Garage door track with inwardly hemmed sidewall, and reinforcing ribs to reduce the incidence of rollout |
CN103526878A (en) * | 2013-11-07 | 2014-01-22 | 沈阳建筑大学 | Web bracing cold-formed thin-wall complex crimping channel steel opening component |
JP6638577B2 (en) * | 2016-06-28 | 2020-01-29 | 日本製鉄株式会社 | Buckling stiffening structure and section steel |
CN106268711A (en) * | 2016-07-07 | 2017-01-04 | 安庆师范大学 | Macrocycle molecule modifies the preparation of nano silicon capillary chromatographic column |
US10465382B2 (en) * | 2016-11-30 | 2019-11-05 | Bailey Metal Products Limited | Metal stud for use in sound attenuating wall system utilizing high density wallboard |
CN107184124A (en) * | 2017-06-27 | 2017-09-22 | 广州市泰盛卫浴科技有限公司 | A kind of cystosepiment and bathtub cover |
JP6892028B1 (en) * | 2019-09-25 | 2021-06-18 | 日本製鉄株式会社 | Structural member, structural member manufacturing method and structural member manufacturing equipment |
US11806948B2 (en) | 2019-12-12 | 2023-11-07 | The Boeing Company | Method of forming flyaway stringer end caps |
US11718047B2 (en) | 2019-12-12 | 2023-08-08 | The Boeing Company | Flyaway stringer end caps |
KR102115029B1 (en) * | 2020-01-22 | 2020-05-25 | 채상원 | Section shape steel of high-rigidity |
USD1013212S1 (en) * | 2020-02-12 | 2024-01-30 | Usg Interiors, Llc | Linear ceiling channel |
USD1021151S1 (en) | 2021-04-26 | 2024-04-02 | Jaimes Industries, Inc. | Framing member |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2508032A (en) * | 1945-12-22 | 1950-05-16 | Benjamin H Kennedy | Structural metal member |
US3483665A (en) * | 1967-11-30 | 1969-12-16 | Peter H Miller | Dry wall two-piece stud structure |
US3852927A (en) * | 1971-05-10 | 1974-12-10 | H Birum | Apparatus for mounting wallboard |
US4018020A (en) * | 1973-11-01 | 1977-04-19 | Roblin Industries, Inc. | Modular wall construction |
ES252676Y (en) * | 1980-07-31 | 1982-10-16 | KIT OF COMPONENTS FOR THE FORMATION OF METALLIC STRUCTURES | |
JPS6029831U (en) * | 1983-08-03 | 1985-02-28 | ムツミ工業株式会社 | channel steel |
DE3513553A1 (en) * | 1985-04-16 | 1986-10-16 | Fritz Schäfer GmbH, 5908 Neunkirchen | Shelf unit which can be dismantled, in particular shelf unit for pallets |
ES1000203Y (en) * | 1986-09-16 | 1988-06-01 | Oriol Llobet Jose | COMPOSITE PROFILE FOR METALLIC STRUCTURES |
US5325651A (en) * | 1988-06-24 | 1994-07-05 | Uniframes Holdings Pty. Limited | Wall frame structure |
JPH03129031A (en) * | 1989-05-08 | 1991-06-03 | Uniframes Ltd | Metal floor beam |
AU129089S (en) * | 1996-06-04 | 1997-01-16 | Sheet metal formwork | |
US6073414A (en) * | 1997-06-12 | 2000-06-13 | Dale Industries, Inc. | Light gauge metal truss system |
US5865008A (en) * | 1997-10-14 | 1999-02-02 | Bethlehem Steel Corporation | Structural shape for use in frame construction |
ES1041857Y (en) * | 1998-12-09 | 2000-01-01 | Mecalux | LOCKING DEVICE FOR THE LACE BETWEEN SIDES AND SHELF PROPS. |
ES1041767Y (en) * | 1999-01-25 | 1999-12-16 | Esmena Sa | METALLIC PROFILE FOR STRUCTURES AND THE LIKE. |
JP2000297498A (en) * | 1999-04-13 | 2000-10-24 | Oyo Kikaku:Kk | Shape steel |
US6568144B2 (en) * | 2000-10-17 | 2003-05-27 | Harold F. Meredith | Metal construction panel |
US20020139079A1 (en) * | 2001-03-29 | 2002-10-03 | Brady Todd A. | Clip framing system |
DE10207625A1 (en) * | 2002-02-22 | 2003-09-04 | Hilti Ag | Elongated hollow profile for hanging objects |
ES1054148U (en) * | 2003-03-05 | 2003-06-16 | Burgos Jose Maria Simon | Modular shelf (Machine-translation by Google Translate, not legally binding) |
-
2004
- 2004-04-29 BR BRPI0418734-2A patent/BRPI0418734A/en not_active IP Right Cessation
- 2004-04-29 WO PCT/MX2004/000029 patent/WO2005106317A1/en active Application Filing
- 2004-04-29 CA CA2564519A patent/CA2564519C/en not_active Expired - Fee Related
- 2004-04-29 JP JP2007510633A patent/JP2007534868A/en active Pending
- 2004-04-29 US US10/508,110 patent/US20050241261A1/en not_active Abandoned
- 2004-04-29 EP EP04730377A patent/EP1748247A1/en not_active Withdrawn
- 2004-04-29 CN CNA2004800429007A patent/CN1961177A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2007534868A (en) | 2007-11-29 |
CA2564519A1 (en) | 2005-11-10 |
BRPI0418734A (en) | 2007-09-11 |
CN1961177A (en) | 2007-05-09 |
EP1748247A1 (en) | 2007-01-31 |
US20050241261A1 (en) | 2005-11-03 |
WO2005106317A1 (en) | 2005-11-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2564519C (en) | Grooved stiffened profile | |
CN100441815C (en) | An improved beam | |
TW512192B (en) | Bridge deck panels, methods of fabricating the same and bridges comprising the same | |
JP5255840B2 (en) | Architectural panels and building structures | |
US20140123587A1 (en) | Framework connecting device of prefabricated building structure | |
CN107806008A (en) | A kind of integration hollow slab bridge girder construction and its construction method based on ultra-high performance concrete connection | |
WO2004020757A1 (en) | Joist assembly and chord for use in such joist assembly | |
CN111794424A (en) | Integral laminated slab honeycomb combination beam and manufacturing method thereof | |
CA3080366A1 (en) | Engineered beam with adjustable angle connection | |
JP4425144B2 (en) | Structural building elements | |
CN116335010A (en) | Detachable prefabricated closed-end pressing type steel-concrete composite beam and construction method thereof | |
CN114790695B (en) | Manufacturing method of special-shaped independent tower matched hinged steel bridge pier system cable-stayed landscape steel bridge | |
CN111794423A (en) | Steel-concrete combined beam structure, building and construction method | |
JP5047060B2 (en) | Synthetic floor slab and its reinforcement method | |
CN113338533B (en) | Deformation control method for plate type bidirectional bearing keel frame | |
CN112176850B (en) | Steel-UHPC combined structure shear connector and manufacturing and mounting method thereof | |
CN211007316U (en) | Enclosure structure of fabricated building and steel pipe column used by same | |
CN115369918A (en) | Variable-cross-section thick and heavy arc arch slab formwork system and construction method thereof | |
JP7264690B2 (en) | METHOD FOR MANUFACTURING CONCRETE WALL STRUCTURE AND BUILDING STRUCTURE | |
CN111360487A (en) | Novel steel structure and preparation method thereof | |
CN106760476B (en) | Internal connection type scaffold fastener and connection structure thereof | |
CN219060960U (en) | Paying-off device for positioning large arc beam | |
CN220620721U (en) | Orthogonal steel bar truss for assembly type multi-rib floor dismantling-free formwork | |
CN204112582U (en) | Combination multi-ribbed plate and assembling slab column system | |
CN218779720U (en) | Prefabricated coincide wall horizontal connection node structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20150429 |