EP2000596A2 - Wehr zum temporären Schließen von Kanälen und Hafeneinfahrten - Google Patents

Wehr zum temporären Schließen von Kanälen und Hafeneinfahrten Download PDF

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Publication number
EP2000596A2
EP2000596A2 EP08157694A EP08157694A EP2000596A2 EP 2000596 A2 EP2000596 A2 EP 2000596A2 EP 08157694 A EP08157694 A EP 08157694A EP 08157694 A EP08157694 A EP 08157694A EP 2000596 A2 EP2000596 A2 EP 2000596A2
Authority
EP
European Patent Office
Prior art keywords
mobile
floodgate
disconnectable
base
metal body
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Withdrawn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
EP08157694A
Other languages
English (en)
French (fr)
Other versions
EP2000596A3 (de
Inventor
Oreste Fracasso
Augusto Vernoesi
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.)
Fracasso SpA
Original Assignee
Fracasso SpA
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 Fracasso SpA filed Critical Fracasso SpA
Publication of EP2000596A2 publication Critical patent/EP2000596A2/de
Publication of EP2000596A3 publication Critical patent/EP2000596A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/40—Swinging or turning gates
    • E02B7/44—Hinged-leaf gates
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/50—Floating gates

Definitions

  • the present invention relates to a mobile weir for temporary closing of channels and port entrances.
  • the present invention relates to a submergible mobile weir specifically structured for being positioned in a point corresponding to a navigable port entrance that connects a closed lagoon to the immediately adjacent open sea so as to be able, if need be, to block the flow of water that from the sea flows towards the lagoon and vice versa, preventing only in this case the naval traffic that passes through the access to the port.
  • the level of the sea water is subject to periodic fluctuations (traditionally referred to as tides), which, in coincidence with other atmospheric events of extraordinary intensity, can pour into the lagoon such a large amount of water as to raise the level of the water within the lagoon itself to such a high value as to jeopardize the static stability of the buildings and of the building works distributed along the coast and/or overlooking the lagoon itself.
  • periodic fluctuations traditionally referred to as tides
  • the mobile floodgates are able to swing between a lowered position, in which the floodgates rest on the seafloor in a substantially horizontal position, and a raised position, in which the floodgates extend in cantilever fashion from the base in a direction substantially perpendicular to the seafloor of the port entrance so as to emerge partially above the surface of the water and form a barrage that extends without solution of continuity for the entire width of the port entrance so as to prevent the passage of the water through the port entrance itself.
  • each of the floodgates is in fact provided internally with a tank for regulation of the position, which, in a way similar to the compensation tanks or ballast tanks present in submarines, is designed to be filled with water and/or pressurized air so as to be able to regulate the buoyancy of the floodgate, and the mobile weir is provided with a system for supply of pressurized air, which, upon command, is able to send into the tank for regulation of the position of each mobile floodgate an amount of air sufficient to produce a buoyant force higher than the weight of the floodgate itself so as to cause slow and progressive raising of all the mobile floodgates from the lowered position to the raised position and the consequent constitution of the barrage.
  • each mobile floodgate to the reinforced-concrete base sunken in the seafloor of the port entrance by means of a pair of disconnectable hinges, each of which is made up of a fixed portion, which is stably anchored to the reinforced-concrete base immediately on top of an internal service compartment, and a mobile portion, which is instead stably fixed on the side of the mobile floodgate, incorporates the hinge articulation joint, and is finally structured so as to be coupleable to the fixed portion in a stable, but easily releasable, way, guaranteeing in any case the necessary structural stiffness.
  • the mobile portion of the disconnectable hinge is basically made up of a plane appendage, which extends in cantilever fashion from the side of the mobile floodgate, an intermediate fork hinged so that it is free to turn on the distal end of the plane appendage by means of a transverse pin perpendicular to the plane of lie of the plane appendage itself, and finally an engagement head substantially shaped like a truncated cone, which is rigidly fixed on the end of the trunk of the intermediate fork.
  • the engagement head of the hinge is normally made up of two circular metal plates of appropriate thickness and of different diameter, which are set sharing one and the same reference axis, at a pre-set distance from one another, and of a series of transverse stiffening ribs, which are welded edgewise on the two circular plates so as to form a structure with high stiffness.
  • the fork of the hinge is instead constituted by a flanged metal disk of appropriate thickness, which is designed to be fixed via bolts to the center of the circular plate of larger diameter of the engagement head, and by two plane metal appendages of appropriate thickness, which are welded edgewise on one and the same face of the flanged disk so as to extend in cantilever fashion in a direction perpendicular to the aforesaid face remaining parallel and facing one another.
  • the fixed portion of the disconnectable hinge is, instead, basically made up of an anchorage platform, which is embedded in or in any case anchored to the reinforced-concrete wall of the base, and is provided with a central seat that has a shape complementary to that of the engagement head of the mobile portion of the hinge, and of an engagement and clamping member, which is designed, in sequence, to engage the engagement head of the mobile portion of the hinge and then to withhold the engagement head so that it bears upon the central seat of the anchorage platform exerting a tensile force of a pre-set value.
  • the mobile portion of the disconnectable hinge is subject to extremely high mechanical stresses, it must be made up of pieces of high-strength stainless steel, and must be assembled with extreme care on account of the extremely small mechanical tolerances, verifying systematically proper positioning of each piece and the quality of each individual weld. This need obviously results in long construction times and wide use of high-quality material, with consequent explosion of the production costs.
  • the particularly complex shape of the engagement head of the mobile portion of the hinge does not moreover enable widespread use of automatic welders, which contributes to a further increase in the costs of production of the disconnectable hinges.
  • the hourly cost of a skilled technician is in fact higher than that of automatic welders.
  • the aim of the present invention is hence to provide a mobile weir for temporary closing of channels and port entrances that will be provided with disconnectable hinges that will be more economically advantageous to produce.
  • a mobile weir for temporary closing of channels and port entrances is provided as specified in Claim 1 and preferably, but not necessarily, in any one of the dependent claims.
  • the mobile weir 1 essentially comprises a base 2 made of reinforced concrete or the like, which extends at the seafloor F of the port entrance for the entire width of the entrance itself, and a series of plane mobile floodgates or flap gates 3 of a substantially rectangular shape, which are hinged edgewise on the base 2 adjacent to one another so as to occupy without solution of continuity the entire width of the port entrance, and so as to be able to swing about a horizontal axis A common to all mobile floodgates 3.
  • said mobile floodgates 3 are able to swing around one and the same horizontal axis A between a lowered position, in which the mobile floodgates 3 rest on the seafloor F of the port entrance in a substantially horizontal position, and a raised position (see Figure 1 ), in which the mobile floodgates 3 extend in cantilever fashion from the base 2 in a direction substantially perpendicular to the seafloor F of the port entrance so as to emerge partially above the surface of the water and form a barrage that extends without solution of continuity from one bank of the port entrance to the other so as to prevent the passage of water through the port entrance itself.
  • each mobile floodgate 3 in particular, is connected to the base 2 by means of at least one pair of disconnectable hinges 4 (just two of which are visible in Figure 1 ), which are positioned on the side of the mobile floodgate 3 so as to enable swinging of the mobile floodgate 3 about the axis A, and has a box structure so as to form inside it at least one tank for regulation of the position, which is designed to be filled with water and/or pressurized air so as to be able to regulate the buoyancy of the mobile floodgate 3.
  • the mobile weir 1 is provided also with a system for supply of pressurized air (not illustrated), which, upon command, is able to pump within the tank for regulation of the position of each mobile floodgate 3 an amount of pressurized air sufficient to empty the aforesaid tank at least partially of the water filling it so as to generate a buoyant force higher than the weight of the mobile floodgate 3 itself.
  • Said buoyant force is hence able to cause the progressive raising of all the mobile floodgates 3 from the lowered position to the raised position and the consequent creation of the aforesaid barrage.
  • each mobile floodgate 3 is made preferably, but not necessarily, of corrosion-resistant metal material, and basically comprises an internal load-bearing framework 5, which is designed to bestow upon the mobile floodgate 3 the necessary structural stiffness, and a substantially parallelepipedal outer box-like shell 6, which coats the load-bearing framework 5 completely so as to form an enclosed space, which is to be filled with water and/or pressurized air so as to function as ballast tank for regulation of the position of the mobile floodgate 3, and is moreover provided with a series of through openings 6a for taking in and sending out the water, through which the sea water can enter and exit freely from the box-like shell 6, i.e., from the ballast tank for regulation of the position of the floodgate.
  • the load-bearing framework 5 is formed, instead, by a series of longitudinal stiffening beams or centerings 7, which extend in a direction perpendicular to the axis A of rotation of the mobile floodgates 3 and are moreover arranged parallel and set alongside one another in one and the same reference plane, and by a series of reinforcement cross members (not illustrated), each of which is designed to connect two adjacent beams or centerings 7 rigidly to one another as well as to the box-like shell 6.
  • the disconnectable hinges 4 each of these is made up of a fixed portion 4a (schematically illustrated in Figure 1 ), which is stably anchored to the base 2 immediately on top of an internal service compartment 2a, and of a mobile portion 4b, which is instead fixed on the side of the mobile floodgate 3, incorporates the joint for articulation of the hinge about the axis A, and is finally structured so as to be coupleable to the fixed portion 4a in a stable, but easily releasable, way.
  • a fixed portion 4a (schematically illustrated in Figure 1 )
  • mobile portion 4b which is instead fixed on the side of the mobile floodgate 3
  • incorporates the joint for articulation of the hinge about the axis A incorporates the joint for articulation of the hinge about the axis A, and is finally structured so as to be coupleable to the fixed portion 4a in a stable, but easily releasable, way.
  • the mobile portion 4b of the disconnectable hinge 4 comprises: an engagement head 8, which is substantially shaped like a truncated cone, extends sharing an axis L locally perpendicular to the axis A and is finally structured so as to be fittable in the fixed portion 4a of the disconnectable hinge 4 in a stable, but readily releasable, way, providing at the same time a fluid-tight coupling; a bracket 9 for connection to the floodgate, which is structured so as to be fixed in cantilever fashion directly on the load-bearing framework 5 of the mobile floodgate 3, in a position corresponding to the side thereof, and is provided with a plane appendage, which extends in cantilever fashion from the side of the mobile floodgate 3 remaining locally perpendicular to the axis A; and finally an intermediate fork 10, which extends in cantilever fashion from the head 8, and is pivoted on the plane appendage of the bracket 9 by means of a transverse through pin 11 sharing the
  • the bracket 9 for connection to the floodgate is constituted by a plane metal plate 9 of appropriate thickness and of a substantially rectangular shape, which lies in a plane locally perpendicular to the axis A, is provided with a through hole designed to be rotatably engaged by the through pin 11, and finally is provided with a flanged side edge with which it is to be bolted edgewise on the flanged end 7a of a purposely provided beam or centering 7 of the load-bearing framework 5, which projects from the box-like shell 6.
  • bracket 9 is fixed to the side of the mobile floodgate 3 by means of a rigid and disconnectable mechanical coupling.
  • the fixed portion 4a of the disconnectable hinge 4 is instead formed by an anchorage platform 12, which is stably fixed on the base 2 and is provided with a central seat substantially shaped like a truncated cone, which is shaped so as to be able to receive the head 8 of the mobile portion 4b, and by an engagement and clamping member 13, which is designed, in sequence, to engage the head 8 of the mobile portion 4b and then withhold said head 8 so that it bears upon the central seat exerting a tensile force of a pre-set value.
  • the anchorage platform 12 and the engagement and clamping member 13 are both of the type known and will not be described further.
  • the fork 10 is made in one piece with head 8 by means of a die-casting process.
  • the head 8 is formed by a substantially bell-shaped metal body 14, which develops sharing the axis L, and is provided with a blind internal cavity 14a, which communicates with the outside through a central opening made on one of the two axial ends of the body, whilst the fork 10 is formed by two substantially trapezial plane appendages 15 that extend in cantilever fashion from the roof of the metal body 14, i.e., from the vault of the bell, until they reach the plane appendage of the bracket 9 remaining locally parallel and facing one another and the axis L.
  • the two plane appendages 15 are obviously arranged on opposite sides of the plane of lie of the plane appendage of the bracket 9 and of the midplane of the metal body 14 - said planes in the example illustrated coinciding with one another -, and are both provided with a through hole designed to be rotatably engaged by the through pin 11.
  • the head 8 is moreover provided with two projecting annular flanges 16 and 17 of different diameter, which extend in cantilever fashion from the metal body 14 at the two axial ends thereof remaining locally coplanar to two reference planes perpendicular to the axis L.
  • the annular flange 16 surrounds the roof of the metal body 14, departing from which are the two plane appendages 15, and has the side delimited by a truncated-cone surface 16a which is coaxial with axis L, and that converges towards the annular flange 17.
  • the annular flange 17 surrounds, instead, the axial end of the metal body 14 in which the inlet to the internal cavity 14a of the body is made, and has the side delimited by barrel-, or spherical-annulus-shaped toroidal surface 17a which is coaxial with axis L.
  • the maximum diameter of the annular flange 17 is moreover smaller than the minimum diameter of the projecting annular flange 16.
  • the two annular flanges 16 and 17 are skirted by two collars or annular skirts 18 and 19 made of high-strength material, which are designed to come into direct contact with the walls of the anchorage platform 12 that delimit the central seat thereof.
  • the head 8 is finally provided with an engagement plate or bushing 20, which is provided with a central through hole 20a, shaped so as to be engaged in a known way by the mobile stem 13a of the member for 13 engagement and clamping of the fixed portion 4a of the disconnectable hinge 4, and is fixed in a rigid way on the axial end of the metal body 14 in which the inlet to the internal cavity 14a of the body is made in such a way that the through hole 20a is aligned with the inlet to the internal cavity 14a.
  • an engagement plate or bushing 20 which is provided with a central through hole 20a, shaped so as to be engaged in a known way by the mobile stem 13a of the member for 13 engagement and clamping of the fixed portion 4a of the disconnectable hinge 4, and is fixed in a rigid way on the axial end of the metal body 14 in which the inlet to the internal cavity 14a of the body is made in such a way that the through hole 20a is aligned with the inlet to the internal cavity 14a.
  • the engagement plate or bushing 20 shares the axis L, and is fixed in a rigid way on the axial end of the metal body 14 by means of a series of anchoring bolts of a known type.
  • the inlet to the internal cavity 14a of the body is circular, and is provided with a thread, whilst the engagement plate or bushing 20 is sized so as to be screwed at least partially within the aforesaid inlet of the internal cavity 14a.
  • the higher cost of the die-casting process is in fact amply compensated for by the savings deriving from the reduction of the amount of material used for each single piece and by the reduction of the costs of labour and handling of the piece.
  • the mobile floodgate 3 and the mobile portion 4b of the disconnectable hinge 4 require completely different maintenance operations, which, with the adoption of the solution described above, can be performed simultaneously in two distinct places.
  • the possibility of detaching from the mobile floodgate 3 the mobile portions 4b of the two disconnectable hinges 4 renders handling of the single parts much more convenient.
  • the fork 10 is made of a single piece with the head 8 moreover enables sizing of the mechanical flanged coupling between the bracket 9 of the disconnectable hinge 4 and the beam or centering 7 of the mobile floodgate 3 so as to constitute a preferential point of failure of the structure, on which, with relatively contained costs of renewal, the mechanical impulsive stresses deriving from impact of a vessel of large dimensions against the mobile floodgate 3 would be discharged.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Barrages (AREA)
  • Body Structure For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
EP08157694.4A 2007-06-06 2008-06-05 Wehr zum temporären Schließen von Kanälen und Hafeneinfahrten Withdrawn EP2000596A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO20070397 ITTO20070397A1 (it) 2007-06-06 2007-06-06 Diga mobile per la chiusura temporanea di canali e bocche di porto

Publications (2)

Publication Number Publication Date
EP2000596A2 true EP2000596A2 (de) 2008-12-10
EP2000596A3 EP2000596A3 (de) 2014-01-08

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ID=39720209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08157694.4A Withdrawn EP2000596A3 (de) 2007-06-06 2008-06-05 Wehr zum temporären Schließen von Kanälen und Hafeneinfahrten

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EP (1) EP2000596A3 (de)
IT (1) ITTO20070397A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20100055A1 (it) * 2010-04-01 2011-10-02 Fracasso S P A Barriera flottante per la chiusura temporanea di canali e bocche di porto
ITTV20100054A1 (it) * 2010-04-01 2011-10-02 Fracasso S P A Barriera mobile per la chiusura temporanea di canali e bocche di porto
CN106638490A (zh) * 2015-11-02 2017-05-10 李�亨 一种活动坝的金属坝面
FR3057882A1 (fr) * 2016-10-25 2018-04-27 Conception Etude Paysage Genie Ecologique Clapet mecanique automatique prevu pour fermer un passage d'eau encadre par deux parois
CN108643136A (zh) * 2018-04-02 2018-10-12 河海大学 一种弓弦桁架式平面闸门
IT201700114892A1 (it) * 2017-10-12 2019-04-12 Dario Bernardi Pala posta in mare, inclinata a mare calmo verso il largo e basculante a seguito dei flutti
CN109908631A (zh) * 2019-02-15 2019-06-21 无锡市锡山区污水处理厂 一种弹性出水堰

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756032A (en) 1971-03-10 1973-09-04 Riva Calzoni Spa Sluicegate structure
US4836711A (en) 1987-05-25 1989-06-06 Riva Calzoni S.P.A. Hinge-assembly, particularly for underwater mounting
EP0397609A1 (de) 1989-05-09 1990-11-14 RIVA CALZONI S.p.A. Scharniervorrichtung für die Gelenkverbindung zwischen drehenden Schleusentoren und einem Bett, versehen mit einer lösbaren Kupplung, um sie auf dem Bett zu fixieren

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1183891A (fr) * 1957-10-04 1959-07-15 Digues-clapets
ITTO20050354A1 (it) * 2005-05-24 2006-11-25 Fracasso Metalmeccanica Barriera mobile per lo sbarramento temporaneo di canali e bocche di porto

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756032A (en) 1971-03-10 1973-09-04 Riva Calzoni Spa Sluicegate structure
US4836711A (en) 1987-05-25 1989-06-06 Riva Calzoni S.P.A. Hinge-assembly, particularly for underwater mounting
EP0397609A1 (de) 1989-05-09 1990-11-14 RIVA CALZONI S.p.A. Scharniervorrichtung für die Gelenkverbindung zwischen drehenden Schleusentoren und einem Bett, versehen mit einer lösbaren Kupplung, um sie auf dem Bett zu fixieren

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20100055A1 (it) * 2010-04-01 2011-10-02 Fracasso S P A Barriera flottante per la chiusura temporanea di canali e bocche di porto
ITTV20100054A1 (it) * 2010-04-01 2011-10-02 Fracasso S P A Barriera mobile per la chiusura temporanea di canali e bocche di porto
CN106638490A (zh) * 2015-11-02 2017-05-10 李�亨 一种活动坝的金属坝面
FR3057882A1 (fr) * 2016-10-25 2018-04-27 Conception Etude Paysage Genie Ecologique Clapet mecanique automatique prevu pour fermer un passage d'eau encadre par deux parois
IT201700114892A1 (it) * 2017-10-12 2019-04-12 Dario Bernardi Pala posta in mare, inclinata a mare calmo verso il largo e basculante a seguito dei flutti
CN108643136A (zh) * 2018-04-02 2018-10-12 河海大学 一种弓弦桁架式平面闸门
CN109908631A (zh) * 2019-02-15 2019-06-21 无锡市锡山区污水处理厂 一种弹性出水堰

Also Published As

Publication number Publication date
ITTO20070397A1 (it) 2008-12-07
EP2000596A3 (de) 2014-01-08

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