EP0465303B1 - Verbesserungen an Schrägseilbrücken und insbesondere an deren Seilen und Pfeilern - Google Patents

Verbesserungen an Schrägseilbrücken und insbesondere an deren Seilen und Pfeilern Download PDF

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Publication number
EP0465303B1
EP0465303B1 EP91401728A EP91401728A EP0465303B1 EP 0465303 B1 EP0465303 B1 EP 0465303B1 EP 91401728 A EP91401728 A EP 91401728A EP 91401728 A EP91401728 A EP 91401728A EP 0465303 B1 EP0465303 B1 EP 0465303B1
Authority
EP
European Patent Office
Prior art keywords
cable
pylon
stayed bridge
strands
stay
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 - Lifetime
Application number
EP91401728A
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English (en)
French (fr)
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EP0465303A1 (de
Inventor
Carlos De La Fuente
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.)
Freyssinet International STUP SA
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Freyssinet International STUP SA
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Filing date
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Application filed by Freyssinet International STUP SA filed Critical Freyssinet International STUP SA
Publication of EP0465303A1 publication Critical patent/EP0465303A1/de
Application granted granted Critical
Publication of EP0465303B1 publication Critical patent/EP0465303B1/de
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports

Definitions

  • the invention relates to cable-stayed bridges comprising an apron, at least one concrete pylon and guy lines stretched obliquely between the pylon and the deck to support the latter, and it relates more particularly to the pylons and guy lines of these bridges as well as the anchoring devices for the shrouds on the pylons.
  • each guy is formed by a bundle of strands or strands juxtaposed side by side over the greater part of their length and where the upper portion of each guy passes right through the pylon which supports it, the free end of this upper portion being anchored on a block bearing on the face of the pylon, located on the side opposite to that where the stay is located.
  • the shrouds are grouped in pairs of shrouds extending obliquely downward from the same section vertical of the pylon, on either side thereof in the longitudinal direction of the bridge.
  • the object of the invention is, above all, to remedy these drawbacks.
  • the guyed bridges of the type in question according to the invention are essentially characterized in that the different sections of strands respectively constituting the slightly flared upper portions of two guy wires anchored on the same vertical section of pylon and extending from other of this pylon are crossed with mutual nesting so that the middle lines of these two portions are both located in the same vertical plane of the pylon parallel to the longitudinal direction of the bridge.
  • the invention includes, apart from these main provisions, certain other provisions which are preferably used at the same time and which will be more explicitly discussed below.
  • Figure 1 of these drawings shows schematically from the side the top of a guyed pylon.
  • Figure 2 shows schematically in plan the same vertex established in a manner known per se.
  • FIG. 3 schematically shows in plan said vertex established in accordance with the invention.
  • Figure 4 shows in more detail in vertical section a device for guiding and crossing guy ropes established and placed in a pylon in accordance with the invention.
  • Figures 5 and 6 show respectively in vertical section and in end view along arrow VI of Figure 5 a variant of such a guide and crossing device also established and implemented in accordance with the invention.
  • FIG. 7 schematically shows another device for guiding and crossing the shrouds.
  • FIGS. 8 and 9 respectively show an end view and a longitudinal section of one end of the device according to FIG. 7.
  • FIG. 10 schematically shows yet another guide and crossing device established in accordance with the invention.
  • Figure 11 shows an end view of one end of the latter device.
  • a concrete pylon 1 constituting a guyed bridge the high ends of two guy wires 2 each composed by a bundle of strands or strands extending obliquely downward and on the other side of this pylon so as to connect thereto the deck of said bridge.
  • each guy 2 crosses for this purpose the pylon 1 right through so that its free end is anchored on a block 3 horizontally bearing against the pylon.
  • each open end of the stay cable not being zero, it is hardly possible to place the two upper ends blooming guy lines on the same level of the pylon, with their average lines combined.
  • the open upper ends of the two shrouds are crossed mutually by mutually nesting their strands in each other.
  • a prefabricated guide and crossing piece 5 comprising a plurality of channels 6 each assigned to a strand or strand 7 constituting a stay 2.
  • This guide and crossing piece 5 is preferably constituted by a body or core 8 of hardened cement in which are embedded plastic tubes 9 open right through and delimiting the channels 6.
  • the body or core 5 has the very general shape of an X which can be more or less deformed while having symmetry with respect to a transverse median vertical plane.
  • the perforations 11 of these plates are arranged opposite the mutually spaced ends of the channels 6 so that they can be crossed by the corresponding ends of the strands or strands 7.
  • these strands or strands 7 are generally "self-protected", that is to say constituted by a metallic core 7 une surrounded by a protective sheath 72, generally made of plastic, with the interposition of a protective material such as grease, wax, or epoxy pitch.
  • each sheath 72 is advantageously interrupted at the level of the entry of the corresponding strand into the "guide piece" 5, this sheath being extended, inside said piece, by a tube 9 presenting the same diameters and thickness as it.
  • each plate 10 itself constitutes the anchoring block 3
  • each perforation 11 is extended externally by a frustoconical bore 12 flared outwards and capable of serving as a housing for a jaw frustoconical anchor 4 and each upper end of strand or strand 7 is stripped so that only the metal core end 71 passes through the jaw 4 and the end of the sheath 72 (or of the tube 9 which is there substituted) is introduced contiguously in the associated perforation 11.
  • the plate 10 does not itself constitute the anchoring block, which is applied against the plate 10, outside of this plate.
  • Protective covers 13 are attached externally to the blocks or anchoring plates in a manner known per se.
  • the outer face of the core 8 can be itself constituted by a hard and smooth cement skin forming a block with this core, of the kind which forms just inside the molds or formwork of concrete parts, when they are cast.
  • Said external face can also be delimited by an independent envelope, in particular of plastic or sheet metal, as visible at 14 in FIGS. 5 and 9.
  • the X defining the general shape of the core 8 is not deformed: it is composed of two rectilinear sections crossed substantially in their middle.
  • part 5 is embedded in the concrete constituting the pylon 1 and the mounting of the different strands, followed by their individual anchors, is carried out after the pylon has been manufactured.
  • each of the two upper branches of the X defining the general shape of the core 8 is lowered outward so that its end extends horizontally and that the perforated plates 10 which end these ends extend vertically.
  • the assembly of the guide and crossing piece 5 then has the general shape of a bridge whose two feet diverge downwards and whose horizontal plate is terminated at its two ends by the vertical plates 10.
  • the X defining the general shape of the core 8 is completely flattened on itself and curved according to an arc of a circle open downwards.
  • the core 8 is in the form of a cylindrical rod extending in an arc, the extent of which is for example 90 °.
  • each of the perforated plates 10 which extend transversely at one end of the tube is crossed by each of the two stay cables, the central portion being reserved for crossing the current portion of the stay cable which exits on the same side as the plate concerned. and the periphery being assigned to the anchoring of the ends of the other shroud: as visible in FIGS. 8 and 9, the strands corresponding to the current portion of the shroud are contiguous or practically such while the anchored ends are slightly apart others.
  • the guide and crossing device 5 has the same general shape of a rod in an arc of a circle as that of FIGS. 7 to 9, with its end perforated plates 10.
  • This fourth embodiment differs from the previous one in that the current portion of guy wire which passes through each plate 10 is no longer located in the center of this plate, but in its lower part.
  • the invention is in no way limited to those of its modes of application and embodiments which have been more especially envisaged; on the contrary, it embraces all variants, in particular those where the two shrouds of the same pair, although having their upper ends still anchored on the pylon at the same level thereof and still crossed so that their lines are in the same longitudinal vertical plane of the bridge, would not be completely symmetrical to each other with respect to the median transverse plane of the pylon, the inclinations of the two shrouds considered on the horizontal being then not identical and the tensions exerted on each of them are not equal between them either.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Claims (9)

  1. Tragseilbrucke, die wenigstens einen Pfeiler (1) und an diesem Pfeiler verankerte Tragseile (2) umfaßt, wobei jedes Tragseil von einem Bündel Fasern oder Litzen (7) gebildet ist, wobei der obere Abschnitt jedes Tragseils den Pfeiler vollständig durchsetzt und sein freies Ende auf einem Block (3) verankert ist, welcher sich auf der Fläche des Pfeilers abstützt, die auf der Seite angeordnet ist, welche jener gegenüberliegt, an der sich das Tragseil befindet, dadurch gekennzeichnet, daß die geringfügig aufgeweiteten oberen Abschnitte der beiden Tragseile (2), die auf demselben vertikalen Abschnitt des Pfeilers (1) verankert sind und beiderseits dieses Pfeilers verlaufen, unter gegenseitiger Verschachtelung derart gekreuzt sind, daß die Mittellinien dieser beiden Abschnitte alle beide in derselben zur Längsrichtung der Brücke parallelen vertikalen Ebene des Pfeilers angeordnet sind.
  2. Tragseilbrücke nach Anspruch 1, dadurch gekennzeichnet, daß sie für jedes Paar von auf demselben vertikalen Abschnitt des Pfeilers verankerten Tragseilen (2) ein starres vorgefertigtes Führungs- und Kreuzungsteil (5) umfaßt, welches eine Mehrzahl rohrförmiger Führungen (6) umfaßt, die jeweils auf verschiedenen gekreuzten Abschnitten von Litzen (7) vorgesehen sind.
  3. Tragseilbrücke nach Anspruch 2, dadurch gekennzeichnet, daß das Führungsteil (5) einen gehärteten Zementkern (8) umfaßt, welcher von den die rohrförmigen Führungen (6) bildenden Kanälen durchsetzt ist.
  4. Tragseilbrücke nach Anspruch 3, dadurch gekennzeichnet, daß jeder der Kanäle innen durch ein Rohr aus Kunststoffmaterial (9) bedeckt ist.
  5. Tragseilbrücke nach einem der Ansprüche 3 und 4, dadurch gekennzeichnet, daß der Kern (8) in ein Verschalungsgehäuse (14) gehüllt ist.
  6. Tragseilbrücke nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß der Kern (8) mit zwei starren gelochten Platten (10) verbunden ist, welche zur Verankerung der freien Enden der diesen Kern durchsetzenden Litzen (7) oder als Lagerung für Verankerungsblöcke der Enden dienen.
  7. Tragseilbrücke nach Anspruch 6, dadurch gekennzeichnet, daß das Führungsteil (5) die allgemeine Form einer Brücke aufweist, mit zwei dem Anfang der beiden Tragseile (2) entsprechenden divergierenden Schenkeln und einem horizontalen oberen Plateau, welches von zwei durch die beiden gelochten Platten (10) begrenzte vertikale Endseiten eingefaßt ist.
  8. Tragseilbrücke nach Anspruch 6, dadurch gekennzeichnet, daß das Führungsteil die allgemeine Form eines Strangs aufweist, welcher gemäß einem zur Unterseite hin offenen Kreisbogen gekrümmt ist und durch die beiden senkrecht zur Mittellinie des Strangs orientierten gelochten Platten (10) begrenzt ist.
  9. Tragseilbrücke nach Anspruch 8, dadurch gekennzeichnet, daß an jedem Ende des Strangs die Enden der dem an der anderen Seite des Pfeilers (1) angeordneten Tragseil (2) entsprechenden Litzen (7), welche Enden zu ihrer individuellen Verankerung relativ weit voneinander beabstandet sind, die quasi nebeneinanderliegenden laufenden Abschnitte der das Tragseil bildenden, schräg zur Unterseite des Endes des Stranges hin hervortretenden Litzen umgeben.
EP91401728A 1990-06-29 1991-06-26 Verbesserungen an Schrägseilbrücken und insbesondere an deren Seilen und Pfeilern Expired - Lifetime EP0465303B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9008250 1990-06-29
FR9008250A FR2663975B1 (fr) 1990-06-29 1990-06-29 Perfectionnements aux ponts a haubans et plus particulierement a leurs pylones et haubans.

Publications (2)

Publication Number Publication Date
EP0465303A1 EP0465303A1 (de) 1992-01-08
EP0465303B1 true EP0465303B1 (de) 1994-03-30

Family

ID=9398172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401728A Expired - Lifetime EP0465303B1 (de) 1990-06-29 1991-06-26 Verbesserungen an Schrägseilbrücken und insbesondere an deren Seilen und Pfeilern

Country Status (7)

Country Link
US (1) US5197157A (de)
EP (1) EP0465303B1 (de)
BR (1) BR9102724A (de)
ES (1) ES2051092T3 (de)
FR (1) FR2663975B1 (de)
MX (1) MX173846B (de)
PT (1) PT98126B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2798408B1 (fr) 1999-09-15 2002-01-18 Freyssinet Int Stup Cable a fils paralleles pour structure d'ouvrage de construction, ancrage d'un tel cable, et procede d'ancrage
US6880193B2 (en) * 2002-04-02 2005-04-19 Figg Bridge Engineers, Inc. Cable-stay cradle system
US6874821B1 (en) * 2002-05-07 2005-04-05 Felix L. Sorkin Coupler apparatus for use with angled post-tension cables in precast concrete segmental construction
US8869476B2 (en) * 2010-03-26 2014-10-28 Vsl International Ag Sealing arrangement
FR2968681B1 (fr) * 2010-12-08 2015-05-29 Soletanche Freyssinet Dispositif de deviation d'un cable de structure tel qu'un hauban, et ouvrage ainsi equipe
EP2703331B1 (de) * 2012-09-03 2014-12-24 Soletanche Freyssinet Traktionssystem unter Verwendung eines mehrsehnigen Kabels mit einem Ablenkungswinkel
CN110685219B (zh) * 2018-07-06 2025-02-11 中铁第四勘察设计院集团有限公司 一种悬索桥共用锚碇
CN114293453B (zh) * 2021-12-02 2023-12-05 中铁第四勘察设计院集团有限公司 塔柱、索塔腹壁贯穿式锚固结构及斜拉桥
CN114960426A (zh) * 2022-04-20 2022-08-30 西安科技大学 一种用于混凝土桥塔锚固区的钢内模及其施工方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448006A1 (de) * 1974-10-09 1976-04-15 Krupp Gmbh Bruecken-pylon
FR2511721A1 (fr) * 1981-08-21 1983-02-25 Freyssinet Int Stup Dispositif de raccordement incurve entre deux portions rectilignes d'un cable tendu
BR8302084A (pt) * 1983-04-22 1984-11-20 Freyssinet Int Stup Conjunto para ancoragem de membros tensores
DE3437108A1 (de) * 1984-10-10 1986-04-10 Dyckerhoff & Widmann AG, 8000 München Vorrichtung zur verwendung bei der montage eines zuggliedes aus stahldraehten, -litzen oder dergleichen
US4799279A (en) * 1985-12-02 1989-01-24 Figg And Muller Engineers, Inc. Method of constructing the approach and main spans of a cable stayed segmental bridge
DE3838069C2 (de) * 1988-11-10 1995-12-14 Hochtief Ag Hoch Tiefbauten Transport- und einbetonierfähiges Spannbewehrungsaggregat für das Vorspannen von Stahlbetonbauwerken

Also Published As

Publication number Publication date
MX173846B (es) 1994-04-04
US5197157A (en) 1993-03-30
EP0465303A1 (de) 1992-01-08
PT98126A (pt) 1993-09-30
FR2663975A1 (fr) 1992-01-03
HK1007338A1 (en) 1999-04-09
FR2663975B1 (fr) 1993-07-09
BR9102724A (pt) 1992-02-04
ES2051092T3 (es) 1994-06-01
PT98126B (pt) 1999-03-31

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