EP0188395A2 - Gitterträger, insbesondere zur Herstellung einer Brücke - Google Patents

Gitterträger, insbesondere zur Herstellung einer Brücke Download PDF

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Publication number
EP0188395A2
EP0188395A2 EP86400051A EP86400051A EP0188395A2 EP 0188395 A2 EP0188395 A2 EP 0188395A2 EP 86400051 A EP86400051 A EP 86400051A EP 86400051 A EP86400051 A EP 86400051A EP 0188395 A2 EP0188395 A2 EP 0188395A2
Authority
EP
European Patent Office
Prior art keywords
bars
elements
beam according
members
concrete
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.)
Ceased
Application number
EP86400051A
Other languages
English (en)
French (fr)
Other versions
EP0188395A3 (de
Inventor
François Conversy
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.)
Campenon Bernard SA
Original Assignee
Campenon Bernard SA
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 Campenon Bernard SA filed Critical Campenon Bernard SA
Publication of EP0188395A2 publication Critical patent/EP0188395A2/de
Publication of EP0188395A3 publication Critical patent/EP0188395A3/de
Ceased legal-status Critical Current

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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
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/205—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members with apertured web, e.g. frameworks, trusses
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D6/00—Truss-type bridges
    • 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
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/28—Concrete reinforced prestressed

Definitions

  • the present invention relates to a prestressed truss beam, at least partially made up of prefabricated elements, in particular for the construction of a bridge.
  • This beam is intended to be in support at two or more points spaced so as to form one or more spans.
  • Lattice beams comprising, for each span, two series of beam elements arranged on either side of a point of the span where the shear forces under permanent load are substantially zero, these elements being assembled by tensioned reinforcements. , say prestressing reinforcements, each extending over more than one element.
  • Each element of this beam has an upper member and a lower member in concrete, extending in the longitudinal direction of the span. These elements are assembled end to end so that the upper and lower members of the different elements are in line with each other.
  • each element is connected at least by a group of three substantially coplanar bars forming an N.
  • the object of the present invention is to provide a lattice beam particularly well suited to construction from prefabricated elements and having improved resistance to shearing force.
  • this beam is characterized in that two bars of N connect the two members together and extend transversely to the longitudinal direction of the span, near the ends of these members and are anchored to the latter so as to resist essentially tensile forces, while the third bar of N extends between the two aforementioned bars, and in that for the first series of elements, when moving on the span of a support to the 'other, said third bars are rising, while for the second series of elements located beyond a point where the shear forces under permanent load are substantially zero, said third bars are descending, so that these third bars undergo essentially compression forces.
  • the beam according to the invention comprises at least one group of two bars located on either side of the ends situated in the extension of one another of two neighboring elements. These bars which are essentially subjected to tensile stresses are anchored to the concrete members so as to resist such stresses.
  • third bars the arrangement of the other bars known as "third bars” is such that they essentially undergo compression forces and have their opposite ends in abutment against the lower and upper members.
  • the lattice beam is in support at two points 1, 2, the part located between these two points constituting a span 3.
  • This span 3 comprises two series of beam elements 4a, 4b, 4c , ... and 5a, 5b, 5c, ... arranged on either side of a point M of the span 3 where the shear forces under permanent load are substantially zero.
  • the elements 4a, 4b, 4c, ... are arranged symmetrically with respect to the elements 5a, 5b, 5c, ... with respect to a plane passing through the point M and perpendicular to the longitudinal direction D of span 3.
  • Each element 4a, 4b, 4c, ...; 5a, 5b, 5c, ... includes an upper member 6a, 6b, 6c, ...; 7a, 7b, 7c, ... and a lower member 8a, 8b, 8c, ...; 9a, 9b, 9c, ... made of concrete which extend in the longitudinal direction D of span 3.
  • Elements 4a, 4b, 4c, ...; 5a, 5b, 5c, ... are assembled end to end so that their concrete members 6a, 6b, 6c, ...; 7a, 7b, 7c, ... and 8a, 8b, 8c, ...; 9a, 9b, 9c, ... are in line with each other.
  • the upper members 6a, ...; 7a, ... and lower Sa, ...; 9a, ... are connected to each other by a group of three bars 10a, 11a, 12a; 10b, 11b, 12b; ... 13a, 14a, 15a, ... arranged substantially in a plane and together forming an N.
  • the elements 4a, 4b, 4c, ... 5a, 5b, 5c are inscribed in a rectangle, their members being parallel to each other.
  • two bars 10a, 11a; 1 Ob, 11b; 13a, 14a of N connect the upper members 6a, 6b; 7a, 7b and lower 8a, 8b; 9a, 9b between them and extend transversely (in the example shown perpendicularly) to the longitudinal direction D of the span 3.
  • these two bars 10a, 11a; 10b, 11b; 13a, 14a are arranged near the ends such as 16a, 17a of the members.
  • These two bars 10a, 11a; 10b, 11b; 13a, 14a are anchored in the concrete members 6a, 8a; ... so as to resist essentially tensile forces, as will be explained in more detail later.
  • the other bars which will be called “third bars” of the N such as 12a, 12b, ... 15a, ... extend between the two bars 10a, 11a; 10b, 11b; ... 13a, 14a, their opposite ends being in abutment against parts such as 18a, 19a, forming a stop for the upper members 6a, 6b; ... and below Sa, 8b; ...
  • the elements 4a, 4b, 4c, ... 5a, 5b, 5c, ... are assembled to each other by prestressing cables 20, 2 1 , 22, extending in channels formed in the concrete members of these elements.
  • the cable 21 is anchored in a boss 25 formed on the upper member 6b of the element 4b.
  • the other end of this cable is anchored in a similar boss made on the neighboring span (located on the left of Figure 1).
  • the cable 22 is anchored in a boss 26 formed on the upper member of the element 5b.
  • This cable 22 is anchored in a similar boss formed on the neighboring span (located to the right of FIG. 1).
  • the ends in contact such as 16a. 17a upper and lower members of two neighboring elements such as 4a, 4b are located in planes perpendicular to the direction D of the span 3 and parallel to each other.
  • each bar such as 11 has adapted to resist essentially the tensile forces, is symmetrical with the bar such as 10b of the neighboring element with respect to the plane in which the ends in contact such as 16a, 17a, are located.
  • two neighboring elements 4a, 4b are located.
  • the third bars such as 12b (see FIGS. 2 and 3), which essentially undergo compression forces, extend along an axis A which intersects the axis B of each member such as 8b, in a point located at equal distances from axes a and b of bars 11 a and 10b.
  • FIGS. 2 and 3 it can also be seen that the abutment parts 18b and 19b molded in one piece with the upper and lower members have bearing surfaces 29, 30 which are perpendicular to the axis A of the third bar 12b.
  • the element 4 b is made entirely of concrete.
  • This Figure 3 shows that the lower members Sa, 8b of two neighboring elements 4 8 , 4b are in contact along a surface 17a perpendicular to the axis B of these members.
  • the bars 11a and 10b are arranged in parallel and on either side of this surface 17a.
  • the axis A of the third bar 12b of the element 4b intersects the axis B common to the lower members 8a and 8b at a point 17b located at equal distance from the axes a and b of the bars 11 a and 10b.
  • the vector F located on the axis A of the third bar 12b of the element 4b represents the compression force applied to this bar.
  • the force F decomposes into a force F, which biases in tension the vertical bar 10b and a force F 2 which is oriented towards the point of intersection between the axis of the vertical bar 11a of the neighboring element 4a and the axis B the frame 8a of this element.
  • this force F 2 decomposes into a force F, which biases the vertical bar 11a of the element 4a and a force F which compresses the frame 8a of this element.
  • the angle formed by the force F 2 and the axis B is the maximum angle which the total force which crosses the contact surface 17a can form with this axis, this total force being the sum of the force F 2 and the compressive force F 5 of the frame 8b which, for a suitably prestressed structure must always be positive.
  • these vertical bars 11a, 10b be anchored in the concrete of these members beyond the axis of these.
  • the boss such as 19b formed on the frame 8b can collect the compressive force F exerted by the third bar 12b.
  • FIG. 4 shows by way of example, a bar 10b made of concrete and capable of withstanding the tensile forces.
  • This bar 10b has a rectangular section and has at its two ends steel plates 31, 32 perpendicular to the axis of the bar and which project on either side of the concrete body of the bar.
  • the prestressing of the bar 10b is obtained by exerting before the pouring of the concrete equal and opposite forces on the steel plates 31, 32 in a direction which tends to move them away from each other in order to tension the son 33. These forces are maintained after the concrete has been poured until it has acquired sufficient strength.
  • the concrete of the members 6b and 8b is then poured onto the ends of the bar 10b so that the plates 31, 32 are embedded in the concrete of the members.
  • these rods 34, 35 are embedded in the concrete thereof and extend parallel to the axis of these members.
  • the holes 36, 37 formed near the opposite ends of the bar 10b, perpendicular to the axis of the bar and parallel to the steel rods 34, 35 are intended for the passage of prestressing cables such as cables 20, 21, 22 shown in Figure 1.
  • the beam member comprises upper and lower members 6b, 8b which are made of concrete, as in the case of the elements described above.
  • the bars 10 "b, 11" b, and 12'b are made of steel.
  • the vertical bars 10 "b and 11" b have their ends firmly anchored in the concrete of the frames 6b and 8b, while the bar 12'b undergoing essentially compressive forces is in abutment against the parts forming stops 18b and 19b of the frames .
  • This bar 10" b is a steel tube which, filled with concrete 50, has at its opposite ends a crown also made of steel 38, 39 projecting on either side of the tubular body of the bar.
  • These rings 38, 39 intended to be embedded in the concrete of the members 6b, 8b provide excellent anchoring of the bars 10 "b and 11" b and allow them to withstand the tensile forces.
  • the bar 10 "b is crossed by holes 40, 41 allowing the passage of prestressing cables.
  • the beam according to the invention instead of being constituted by a single row of elements 4a, 4b, 4c as indicated in FIG. 1, can comprise two or more parallel rows of elements.
  • Figure 8 shows in detail one 4 'of the two elements of the segment shown in Figure 7.
  • the element 4' is identical to the element 4b shown in Figure 2, except that the upper chord 6 'has a thickness weaker than the member 6b of the element 4b of FIG. 2.
  • the ends 10'b and 11'b of the vertical bars 10b and 11 protrude beyond the upper edge of the member 6 'so as to be embedded in the slab 42 which is poured between the two elements 4 'and 4 ".
  • Figure 9 shows a segment identical to that of Figure 7, except that the lower members are interconnected by two cross members 43, 44 of concrete arranged in a cross, which further improves the mechanical strength of the segment.
  • the segment is also identical to those of FIGS. 7 and 9, except that the lower members of the elements 4 'and 4 "are connected by a concrete slab 45 parallel to the upper slab 42.
  • the segment comprises an upper slab 46 and a lower slab 47 which connect the upper and lower chords of four elements 4A, 4B, 4C, 4D similar to those described above but which are arranged in oblique planes relative to the slabs 46 and 47.
  • the upper and central member 6BC is common to the two central elements 4B and 4C, the latter being connected by progressively deviating from the plane of symmetry of the segment with two lower members 8AB and 8CD which are common to the external elements 4A and 4D.
  • These checkers are each connected to a frame 6A and 6D forming part of the upper slab 46.
  • FIG. 12 represents a bridge resting on vertical piers 48, 49 produced by means of segments V ,, V b V 3 , V. comprising two parallel elements linked together by an upper slab and a lower slab, as in the case of FIG. 10, and of segments V ,, V 6 , V, also comprising two parallel elements connected together by an upper slab, but the lower members of which are connected by crosspieces arranged in a cross as in the case of the segment shown in the figure 9.
  • the segments V 1 , V 2 , V 3 , V 4 which have a stronger lower chord than that of the segments V 5 , V 6 , V 7 , are arranged near the stacks 48, 49.
  • the upper members are as previously arranged along a straight line parallel to the longitudinal direction of the span.
  • the lower members assembled end to end define an arc.
EP86400051A 1985-01-16 1986-01-10 Gitterträger, insbesondere zur Herstellung einer Brücke Ceased EP0188395A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8500565 1985-01-16
FR8500565A FR2576053B1 (fr) 1985-01-16 1985-01-16 Poutre en treillis, notamment pour realiser un pont

Publications (2)

Publication Number Publication Date
EP0188395A2 true EP0188395A2 (de) 1986-07-23
EP0188395A3 EP0188395A3 (de) 1987-08-26

Family

ID=9315326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400051A Ceased EP0188395A3 (de) 1985-01-16 1986-01-10 Gitterträger, insbesondere zur Herstellung einer Brücke

Country Status (5)

Country Link
EP (1) EP0188395A3 (de)
JP (1) JPS61225406A (de)
CA (1) CA1270355A (de)
DE (1) DE188395T1 (de)
FR (1) FR2576053B1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2612963A1 (fr) * 1987-03-27 1988-09-30 Muller Jean Pont constitue d'un tablier et de moyens pour le supporter, notamment pont haubane de grande portee et son procede de construction
FR2629111A1 (fr) * 1988-03-25 1989-09-29 Muller Jean Tablier pour pont de grande longueur
GB2279387A (en) * 1993-06-23 1995-01-04 Malcolm Martin Strong Framework for a bridge or truss
GB2281572A (en) * 1991-05-31 1995-03-08 Alfred Alphonse Yee Truss for e.g. bridges
US6591567B2 (en) * 2000-12-09 2003-07-15 West Virginia University Lightweight fiber reinforced polymer composite modular panel
EP1802813A1 (de) * 2004-09-25 2007-07-04 Ajou University Industry Cooperation Foundation Verfahren zur herstellung eines spannbeton-hohlträgers(hpc-trägers) und einer gespleisten spannbeton-hohlträgerbrücke (s-hpc-brücke)
WO2007086720A1 (es) * 2006-01-30 2007-08-02 Javier Mentado Duran Armadura de concreto
US7275348B2 (en) * 2003-02-06 2007-10-02 Ericksen Roed & Associates Precast, prestressed concrete truss
DE102006056866A1 (de) * 2006-12-01 2008-07-17 Max Bögl Bauunternehmung GmbH & Co. KG Modulare Fachwerkkonstruktion aus Beton und ein Verfahren zu deren Herstellung und Montage

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0765292B2 (ja) * 1988-08-11 1995-07-19 日本鋼管株式会社 箱桁橋梁の空力振動防止構造
JP2886364B2 (ja) * 1991-07-01 1999-04-26 住友建設株式会社 Ｐｃ複合トラスばりおよびその構築工法
JP3948809B2 (ja) * 1998-02-05 2007-07-25 三井住友建設株式会社 コンクリート部材と鋼管部材との接合構造及び接合方法、並びにコンクリート・鋼複合トラス橋
KR100423757B1 (ko) * 2001-05-04 2004-03-22 원대연 프리스트레스트 합성 트러스 보 및 그의 제조 방법
JP2011246979A (ja) * 2010-05-27 2011-12-08 Ps Mitsubishi Construction Co Ltd 高ねじり剛性版桁橋

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR885531A (fr) * 1942-08-27 1943-09-17 Charpentes fixes ou démontables en ciment armé
FR917303A (fr) * 1945-07-10 1947-01-03 Applic Des Procedes Enklay Cim Nouvelle toiture
FR966810A (fr) * 1948-04-23 1950-10-19 Poutre en béton armé de métal, servant d'élément de construction
DE908030C (de) * 1936-03-14 1954-04-01 Dyckerhoff & Widmann Ag Verfahren zum Herstellen von aus Zug- und Druckstaeben bestehenden Stahlbetonfachwerktraegern mit schlaffer Bewehrung
DE975592C (de) * 1948-04-22 1962-02-01 Dyckerhoff & Widmann Ag Verfahren zur Herstellung einer Fachwerkbruecke aus Stahlbeton und bewegliches Geruest zur Durchfuehrung des Verfahrens

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE908030C (de) * 1936-03-14 1954-04-01 Dyckerhoff & Widmann Ag Verfahren zum Herstellen von aus Zug- und Druckstaeben bestehenden Stahlbetonfachwerktraegern mit schlaffer Bewehrung
FR885531A (fr) * 1942-08-27 1943-09-17 Charpentes fixes ou démontables en ciment armé
FR917303A (fr) * 1945-07-10 1947-01-03 Applic Des Procedes Enklay Cim Nouvelle toiture
DE975592C (de) * 1948-04-22 1962-02-01 Dyckerhoff & Widmann Ag Verfahren zur Herstellung einer Fachwerkbruecke aus Stahlbeton und bewegliches Geruest zur Durchfuehrung des Verfahrens
FR966810A (fr) * 1948-04-23 1950-10-19 Poutre en béton armé de métal, servant d'élément de construction

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007604A1 (fr) * 1987-03-27 1988-10-06 Jean Muller Pont constitue d'un tablier et de moyens pour le supporter, notamment pont haubane de grande portee, et son procede de construction
EP0288350A1 (de) * 1987-03-27 1988-10-26 Societe Centrale D'etudes Et De Realisations Routieres- Scetauroute Brücke, bestehend aus einem Deck und dessen Trägern, insbesondere Schrägseilbrücke und Verfahren zu ihrer Herstellung
US4993094A (en) * 1987-03-27 1991-02-19 Scetauroute Bridge comprising a bridge floor and elements supporting said floor, particularly a long span cable-stayed bridge, and process of construction
FR2612963A1 (fr) * 1987-03-27 1988-09-30 Muller Jean Pont constitue d'un tablier et de moyens pour le supporter, notamment pont haubane de grande portee et son procede de construction
FR2629111A1 (fr) * 1988-03-25 1989-09-29 Muller Jean Tablier pour pont de grande longueur
EP0340051A1 (de) * 1988-03-25 1989-11-02 Societe Centrale D'etudes Et De Realisations Routieres- Scetauroute Brückentafel für eine Brücke mit grosser Spannweite
GB2281572A (en) * 1991-05-31 1995-03-08 Alfred Alphonse Yee Truss for e.g. bridges
GB2279387A (en) * 1993-06-23 1995-01-04 Malcolm Martin Strong Framework for a bridge or truss
GB2279387B (en) * 1993-06-23 1997-01-08 Malcolm Martin Strong Framework for a bridge or a truss
US6591567B2 (en) * 2000-12-09 2003-07-15 West Virginia University Lightweight fiber reinforced polymer composite modular panel
US7275348B2 (en) * 2003-02-06 2007-10-02 Ericksen Roed & Associates Precast, prestressed concrete truss
EP1802813A1 (de) * 2004-09-25 2007-07-04 Ajou University Industry Cooperation Foundation Verfahren zur herstellung eines spannbeton-hohlträgers(hpc-trägers) und einer gespleisten spannbeton-hohlträgerbrücke (s-hpc-brücke)
EP1802813A4 (de) * 2004-09-25 2013-03-20 Univ Ajou Ind Coop Foundation Verfahren zur herstellung eines spannbeton-hohlträgers(hpc-trägers) und einer gespleisten spannbeton-hohlträgerbrücke (s-hpc-brücke)
WO2007086720A1 (es) * 2006-01-30 2007-08-02 Javier Mentado Duran Armadura de concreto
DE102006056866A1 (de) * 2006-12-01 2008-07-17 Max Bögl Bauunternehmung GmbH & Co. KG Modulare Fachwerkkonstruktion aus Beton und ein Verfahren zu deren Herstellung und Montage

Also Published As

Publication number Publication date
FR2576053A1 (fr) 1986-07-18
DE188395T1 (de) 1986-11-06
CA1270355A (en) 1990-06-19
FR2576053B1 (fr) 1988-04-15
JPS61225406A (ja) 1986-10-07
EP0188395A3 (de) 1987-08-26

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