EP0115769A2 - Unités de construction sandwich précontraintes périphériquement - Google Patents

Unités de construction sandwich précontraintes périphériquement Download PDF

Info

Publication number
EP0115769A2
EP0115769A2 EP84100046A EP84100046A EP0115769A2 EP 0115769 A2 EP0115769 A2 EP 0115769A2 EP 84100046 A EP84100046 A EP 84100046A EP 84100046 A EP84100046 A EP 84100046A EP 0115769 A2 EP0115769 A2 EP 0115769A2
Authority
EP
European Patent Office
Prior art keywords
composite structural
hollow structure
structural element
pressure
filler
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Withdrawn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
EP84100046A
Other languages
German (de)
English (en)
Other versions
EP0115769A3 (fr
Inventor
Miron Tuval
Andre Wexler
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 EP0115769A2 publication Critical patent/EP0115769A2/fr
Publication of EP0115769A3 publication Critical patent/EP0115769A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
    • 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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • 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 present invention is concerned in general with structural elements and more particularly with prestressed composite structural elements.
  • composite material can include the beneficial characteristics of each of the materials of which the composite is fabricated.
  • reinforced concrete beams provide the compression characteristics of concrete and the tensile characteristics of steel.
  • the characteristics of the composite steel and concrete structural element are improved by prestressing the metallic rods which are included in concrete beams.
  • the prestressing for example puts a pre-tensile stress on the metallic rod that is put into the concrete beam which in turn places a compressive stress on the concrete.
  • This reactionary stress on the concrete improves among other things the Poissons ratio of the composite elements.
  • a composite structural element comprising:
  • a further feature of the present invention provides a method of fabricating such a structure.
  • the method comprises the steps of:
  • Yet another feature of the invention provides a periphery stress composite structural element.
  • Yet another feature of the present invention provides for the external walls of the structure being metallic while said set- table filler being concrete.
  • Yet another feature of the invention provides for a sandwich construction of said peripheral stress composite wherein pre- stressed metallic rod means is inserted within said composite element and wherein said walls of said structure are metallic and said fil- lable material is concrete, said walls being peripherally prestressed while said concrete is also prestressed.
  • pre- stressed metallic rod means is inserted within said composite element and wherein said walls of said structure are metallic and said fil- lable material is concrete, said walls being peripherally prestressed while said concrete is also prestressed.
  • Yet another feature provides for a perforated outer wall through which the filler can extrude and solidify as dendrites attached to the outer wall of the element.
  • the inner part of the element is fabricated as are the previously shown elements.
  • the composite structural element generally shown in pictorial form in Fig. 1 is shown as a rectangular beam 11.
  • the beam is comprised of a walled hollow structure having a settable filler material 12 therein.
  • the walled structure is shown as having top wall 13, bottom wall 14, side wall 16 and opposite side wall 17.
  • the walls preferably are of steel and the settable material is preferably of concrete.
  • other composite materials are within the scope of the inventiono
  • the rectangular block is shown a cylindrical or other shaped composite structural element is also within the scope of this invention.
  • the cross-section showing of Fig. 2 includes a central rod 18 that also may be prestressed.
  • a rectangular rod 18 is shown the rod as well as the structure may be cylindrical.
  • one rod is shown in the structure 19 of Fig. 2, more than one rod may be used.
  • the placement of the rod or rods can also vary.
  • the composite structure may also use inter alia Wirand * concrete, or other fiber reinforced concretes.
  • the filler material is shown as filler material 21
  • the top wall is wall 22
  • the bottom wall is wall 23
  • the side walls are shown as walls 24 and 26. It should be noted that here again cylindrical structure, triangular or other shaped structure can also be used,
  • the composite comprises an outer shell 41 preferably of metal.
  • a liner or liners 42 surround the inner periphery of the shell.
  • the filler is shown at 43.
  • the filler under pressure forces the liner on the inner side of the shell to form a bonded surface between the shell and the filler.
  • This method may protect the outer shell from the chemical action of the filler and vice versa.
  • the line adds sandwich properties to the outer stressed shell.
  • Fig. 4 shows an interesting variation of the composite structural element 45 and the use thereof.
  • the outer shell is shown as 46. There are a plurality of apertures 47 in the outer shell.
  • the filler 48 is inserted into the outer shell under pressure P I .
  • the outer shell is however first placed in the ground 49 which exerts
  • FIG. 5 there is a diagrammatic showing of a pressurized chamber 27 in which the composite structural element is fabricated.
  • Means are provided in the chamber for pressurizing the chamber. More particularly an inlet valve 28 leads from a high pressure line at pressure P E .
  • the high pressure line is shown as line 29.
  • the high pressure chamber is shown as having a top wall 31, a bottom wall 32 and side walls 33 and 34.
  • the composite device 36 in the chamber 27 is shown as cylindrically shaped.
  • a filler 37 is forced into the hollow cylindrical element 36 by a piston 38 acting through piston rod 39.
  • the piston assets a pressure P I on the filler material 37.
  • the piston maintains the pressure on the filler material while it is setting. Additionally the pressure P E is maintained in the chamber 27 during the process of fabricating the composite element 360
  • the embodiment of Fig. 5 demonstrates a composite element 56 fabricated using a plurality of prestressing pressures.
  • the composite element comprises an outer shell subjected to a transverse pressure P E and a longitudinal pressure F 1 .
  • the shell surrounds a first filler filled compartment 58 having filler therein subjected to a longitudinal pressure P 2 during the filling and setting process.
  • An inner shell 59 defines yet another compartment 61.
  • the shell 59 is preferably metal and subjected to a pressure P 3 which may be equal to, greater than the pressures P 1 and/or P 2 or may even be negative.
  • the inner compartment contains a filler or a rod at pressure P 4 which may be negative or less than, more than or equal to the other pressures.
  • the composite element utilizes filler material that is extremely resistant under compression and external material that is extremely resistant to tensile stresses.
  • the materials are joined together while pressure is exerted on the hollow container and on the filler material in substantially normal directions.
  • the resultant composite is a structural element that is extremely resistant to buckling as well as capable of withstanding extreme compressive'and tensile forces.
  • the structural element is fabricated by maintaining a shear pressure on the hollow structure while maintaining a compressive stress on the filler as it hardens.
  • a reinforcing type rod or rods under tensile stresses may be inserted into the filler and retained there during the hardening process.
  • the structure may undergo stress release treatment, if necessary.
  • the "T" shaped composite element of Fig. 7 is especially useful for interconnecting other composites.
  • the element of Fig. 7 is also a composite as taught herein. Other coupling shapes could of course be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Composite Materials (AREA)
  • Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Piles And Underground Anchors (AREA)
EP84100046A 1983-01-05 1984-01-03 Unités de construction sandwich précontraintes périphériquement Withdrawn EP0115769A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL67622 1983-01-05
IL67622A IL67622A (en) 1983-01-05 1983-01-05 Peripherally stressed composite structural units

Publications (2)

Publication Number Publication Date
EP0115769A2 true EP0115769A2 (fr) 1984-08-15
EP0115769A3 EP0115769A3 (fr) 1986-04-30

Family

ID=11053984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100046A Withdrawn EP0115769A3 (fr) 1983-01-05 1984-01-03 Unités de construction sandwich précontraintes périphériquement

Country Status (7)

Country Link
EP (1) EP0115769A3 (fr)
JP (1) JPS59158858A (fr)
AU (1) AU2287783A (fr)
BR (1) BR8400082A (fr)
IL (1) IL67622A (fr)
NO (1) NO840032L (fr)
ZA (1) ZA839681B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1846185A4 (fr) * 2005-01-15 2010-09-29 Husqvarna U S Holding Inc Voie, colonne et autres supports composites destines notamment a des equipements
US20130160398A1 (en) * 2010-03-19 2013-06-27 Weihong Yang Composite i-beam member
US8820033B2 (en) * 2010-03-19 2014-09-02 Weihong Yang Steel and wood composite structure with metal jacket wood studs and rods
US20150135638A1 (en) * 2010-03-19 2015-05-21 Weihong Yang Composite i-beam member

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0161319U (fr) * 1987-10-12 1989-04-19

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1446425A (en) * 1972-08-04 1976-08-18 Kuei Fan Yu Structural members
CH636156A5 (fr) * 1980-05-16 1983-05-13 Gram Sa Colonne mixte.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1846185A4 (fr) * 2005-01-15 2010-09-29 Husqvarna U S Holding Inc Voie, colonne et autres supports composites destines notamment a des equipements
US20130160398A1 (en) * 2010-03-19 2013-06-27 Weihong Yang Composite i-beam member
US8820033B2 (en) * 2010-03-19 2014-09-02 Weihong Yang Steel and wood composite structure with metal jacket wood studs and rods
US8910455B2 (en) * 2010-03-19 2014-12-16 Weihong Yang Composite I-beam member
US20150135638A1 (en) * 2010-03-19 2015-05-21 Weihong Yang Composite i-beam member
US9493950B2 (en) * 2010-03-19 2016-11-15 Weihong Yang Composite I-beam member

Also Published As

Publication number Publication date
IL67622A0 (en) 1983-05-15
AU2287783A (en) 1984-07-12
ZA839681B (en) 1984-08-29
JPS59158858A (ja) 1984-09-08
BR8400082A (pt) 1984-08-14
EP0115769A3 (fr) 1986-04-30
IL67622A (en) 1989-10-31
NO840032L (no) 1984-07-06

Similar Documents

Publication Publication Date Title
Lin et al. Design of prestressed concrete structures
CA2257739C (fr) Methode de renforcement d'un montant en beton arme deja en place
US4709456A (en) Method for making a prestressed composite structure and structure made thereby
US3852930A (en) Tridimensional fiber reinforcement of portland cement concrete matrices
US3468090A (en) Constructional element and method of making the same
US3260020A (en) Concentric chambered prestressed unit
EP0115769A2 (fr) Unités de construction sandwich précontraintes périphériquement
US4999959A (en) Prestressed construction element of composite structure and method for element fabrication
CA1245038A (fr) Coulee du beton precontraint sans armature dans l'ame
US3835607A (en) Reinforced girders of steel and concrete
Katsumata et al. Applications of retrofit method with carbon fiber for existing reinforced concrete structures
US4113823A (en) Method of manufacturing prestressed concrete pipe
JPH0723624B2 (ja) 繊維強化コンクリ−ト構造
CN220644868U (zh) 一种用于叠合梁的预制梁、叠合梁
JPH0742310A (ja) コンクリ−ト補強用繊維複合型補強材およびその端末定着方法
JP2520304B2 (ja) プレストレス導入鉄骨組立梁
JPS60219370A (ja) 変断面を有する大型容器の構築方法
JPS5622817A (en) Highly strong prestressed concrete pile
RU2033505C1 (ru) Способ изготовления предварительно напряженного строительного элемента с внешней трубчатой обоймой
DE60304893T2 (de) Verstärkte rohrstrukturen
JP2981151B2 (ja) 鉄筋コンクリート杭
US3273295A (en) Split-beam prestressing
CA1295464C (fr) Raccordement de joint
SU715753A1 (ru) Способ изготовлени сжатых железобетонных элементов
US3819794A (en) Method for making prestressed precast concrete elements

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19861113