US3707011A - Bracing apparatus for movement of a bridging work - Google Patents

Bracing apparatus for movement of a bridging work Download PDF

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Publication number
US3707011A
US3707011A US119709A US3707011DA US3707011A US 3707011 A US3707011 A US 3707011A US 119709 A US119709 A US 119709A US 3707011D A US3707011D A US 3707011DA US 3707011 A US3707011 A US 3707011A
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US
United States
Prior art keywords
bridging structure
mast
cables
forces
control means
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
US119709A
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English (en)
Inventor
Pierre Launay
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.)
IND DE TRAVAUX Cie
IND DE TRAVAUX COMP
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IND DE TRAVAUX COMP
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Filing date
Publication date
Application filed by IND DE TRAVAUX COMP filed Critical IND DE TRAVAUX COMP
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Publication of US3707011A publication Critical patent/US3707011A/en
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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
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
    • E01D21/065—Incremental launching

Definitions

  • the present invention relates to bracing apparatus for support of a bridging structure during movement more particularly, for example, support of a bridge during movement to bridging position by pushing the framework thereof away from a bank or support.
  • a temporary light structure may be connected to the front of the bridging structure to support it on an adjacent pile or abutment before the bridging structure proper reaches such a support.
  • a bracing construction can also be provided for the front portion of the bridging structure to give it an inverse support for the forces that develop during movement of the bridge. It is evident that the value of the supplementary forces on the unsupported portion of the bridging structure increase progressively during movement of the bridging structure from one support to another and that these forces decrease abruptly when the free end of the bridging structure reaches the next support. Bracing cables for the bridging structure are therefore generally regulated to tensions such that excessive forces are not created in one direction while equalizing the opposed forces created during the unsupported movement of the bridging structure.
  • the present invention corrects these difficulties and provides for constant continuous variation of the forces provided by the bracing made up of a series of cables anchored at the outer extremity of the bridging structure and anchored at a second point inshore thereof, these cables resting on the upper part of a mast located substantially equidistant between the anchor points of the cables.
  • the invention also provides for automatic variation of these forces.
  • the base of the mast rests on an intermediate support including a continuously controlled lifting device, a dynamometer being disposed between the lifting device and the intermediate support which is mounted on the bridging structure.
  • FIG. 1 is a schematic representation of the forward part of the base of a bridge during movement toward a bridging position provided with reinforcing bracing for this part;
  • FIG. 2 is a transverse view in larger scale on the line II--II of FIG. 1 showing in detail the mast for the bracing;
  • FIG. 3 is a detail of the foot of the mast.
  • FIG. 4 is a diagram of the forces created at the foot of the mast for the bracing during movement of the bridging structure from one support to another.
  • a prefabricated bridging structure 1 is pushed by means not shown in the drawings and rests on the piles or supports 2 and 3 during movement toward the following pile or support 4.
  • the extremityof bridging structure 1 is reinforced by bracing including a vertical mast 5 on the upper extremity of which a series of cables 6 are supported and extend between two anchoring points 7 and 8 on structure 1.
  • structure 1' is provided with an advance shoe 9.
  • -cables 6 are divided into two groups, one on each side of bridging structure 1 and mast 5 has two vertical components spaced and supported by bracing 10. Each group of cables 6 is supported by the mast at the tops of the vertical components. The foot of each vertical component of the mast rests on a hydraulic cylinder device 12 and thus on bridging structure 1 as more clearly seen in FIG. 3.
  • each vertical component of mast 5 is formed as a cap 13.
  • the branches 13' of the cap can be interconnected by means of axes 14 to supports 15 which rest intermediate concrete footings l6 and thus on bridging structure 1.
  • the body of the hydraulic device 12 is fixed at 17 within the cap and a dynamometer 18 is interposed between the head of the piston of device 12 and bridging structure 1.
  • FIG. 4 generally shows such curves and 21 during displacement of bridging structure 1 from pile 3 toward pile 4. If the admissible counter forces are sufficiently high, the area defined by the two curves 20 and 21 is relatively large and the force P can be varied at the foot of the mast by successive increments by varying the pressure in the hydraulic devices 12 only after an elementary movement p, or, when the area is large, after several successive movements. Curve 23 gives the actual variation of the forces P thus obtained taking into consideration the controlled variations and the variations resulting from displacement of the bridging structure.
  • Bracing apparatus for a bridging structure moved progressively from a bank toward a support comprising a plurality of cables anchored adjacent the outer end of the bridging structure and anchored at a second point inboard of the first anchorage, a substantially vertical mast equidistant between the two anchoring points of said cables supporting said cables, means for raising said mast disposed between the foot of said mast and the bridging structure, means for continuously controlling said raising device and a dynamometer disposed betwgen said control meaps and said bridging structure, sal continuous contro means being programmed according to the variation of the forces measured by said dynamometer.
  • said raising means including at least one hydraulic jack supplied with fluid under pressure and controlled by said continuous control means.
  • Bracing apparatus for a bridging structure moved progressively from a bank toward a support comprising a plurality of cables anchored adjacent the outer end of the bridging structure and anchored at a second point inboard of the first anchorage, a substantially vertical mast equidistant between the two anchoring points of said cables supporting said cables, means for raising said mast disposed between the foot of said mast and the bridging structure, means for continuously controlling said raising device and a dynamometer disposed between said control means and said bridging structure, said continuous control means being programmed according to the variation of the forces measured by said dynamometer, said raising means including at least one hydraulic jack supplied with fluid under pressure and controlled by said continuous control means, said continuous control means for the pressure supplied to said hydraulic jacks being programmed according to the variation of the forces measured by said dynamometer as a function of the movement of said bridging structure.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
US119709A 1970-03-11 1971-03-01 Bracing apparatus for movement of a bridging work Expired - Lifetime US3707011A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7008699A FR2082338A5 (fr) 1970-03-11 1970-03-11

Publications (1)

Publication Number Publication Date
US3707011A true US3707011A (en) 1972-12-26

Family

ID=9052095

Family Applications (1)

Application Number Title Priority Date Filing Date
US119709A Expired - Lifetime US3707011A (en) 1970-03-11 1971-03-01 Bracing apparatus for movement of a bridging work

Country Status (8)

Country Link
US (1) US3707011A (fr)
BE (1) BE763614A (fr)
CA (1) CA956756A (fr)
CH (1) CH526002A (fr)
FR (1) FR2082338A5 (fr)
LU (1) LU62664A1 (fr)
NL (1) NL7102811A (fr)
SE (1) SE351881B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740782A (en) * 1971-12-23 1973-06-26 Sverdrup & Parcel Ass Inc Method and apparatus for servicing counterbalanced lifting device
US4319374A (en) * 1977-12-06 1982-03-16 Dyckerhoff & Widmann Aktiengesellschaft Method of constructing a stayed girder bridge
US4651375A (en) * 1984-11-15 1987-03-24 Romualdo Macchi Launching system for bridge bays, especially continuous-beam bridges made up of prefabricated segments and to be tightened upon installation by means of prestressed wires
WO2000015019A2 (fr) * 1998-08-26 2000-03-23 Juri Yakovlevich Brodsky Four a micro-ondes
CN113668400A (zh) * 2021-08-24 2021-11-19 中建八局第一建设有限公司 一种重型钢梁顶推设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD130796B1 (de) * 1977-03-08 1979-11-28 Bernd Matthes Vorrichtung zum einschieben von brueckenkonstruktionen
CN111074795A (zh) * 2019-12-31 2020-04-28 中铁十九局集团第二工程有限公司 跨越既有铁路的悬臂浇筑连续梁施工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842786A (en) * 1952-01-29 1958-07-15 Engineering & Ind Exports Ltd Bridges
US3299191A (en) * 1962-12-21 1967-01-17 Polensky & Zoellner Method and means for erecting bridges
US3490605A (en) * 1967-04-24 1970-01-20 Kurt Koss Traveling beam for the production of bridge sections
US3571835A (en) * 1967-10-30 1971-03-23 Dyckerhoff & Widmann Ag Apparatus for concreting multiple section structures, particularly bridge supports of reinforced or prestressed concrete

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842786A (en) * 1952-01-29 1958-07-15 Engineering & Ind Exports Ltd Bridges
US3299191A (en) * 1962-12-21 1967-01-17 Polensky & Zoellner Method and means for erecting bridges
US3490605A (en) * 1967-04-24 1970-01-20 Kurt Koss Traveling beam for the production of bridge sections
US3571835A (en) * 1967-10-30 1971-03-23 Dyckerhoff & Widmann Ag Apparatus for concreting multiple section structures, particularly bridge supports of reinforced or prestressed concrete

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740782A (en) * 1971-12-23 1973-06-26 Sverdrup & Parcel Ass Inc Method and apparatus for servicing counterbalanced lifting device
US4319374A (en) * 1977-12-06 1982-03-16 Dyckerhoff & Widmann Aktiengesellschaft Method of constructing a stayed girder bridge
US4651375A (en) * 1984-11-15 1987-03-24 Romualdo Macchi Launching system for bridge bays, especially continuous-beam bridges made up of prefabricated segments and to be tightened upon installation by means of prestressed wires
WO2000015019A2 (fr) * 1998-08-26 2000-03-23 Juri Yakovlevich Brodsky Four a micro-ondes
WO2000015019A3 (fr) * 1998-08-26 2000-05-25 Juri Yakovlevich Brodsky Four a micro-ondes
CN113668400A (zh) * 2021-08-24 2021-11-19 中建八局第一建设有限公司 一种重型钢梁顶推设备
CN113668400B (zh) * 2021-08-24 2022-12-20 中建八局第一建设有限公司 一种重型钢梁顶推设备

Also Published As

Publication number Publication date
FR2082338A5 (fr) 1971-12-10
BE763614A (fr) 1971-08-02
NL7102811A (fr) 1971-09-14
SE351881B (fr) 1972-12-11
CH526002A (fr) 1972-07-31
LU62664A1 (fr) 1971-08-18
DE2060392A1 (de) 1971-09-30
CA956756A (en) 1974-10-29

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