EP2702208B1 - Sluice gate - Google Patents

Sluice gate Download PDF

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Publication number
EP2702208B1
EP2702208B1 EP12723624.8A EP12723624A EP2702208B1 EP 2702208 B1 EP2702208 B1 EP 2702208B1 EP 12723624 A EP12723624 A EP 12723624A EP 2702208 B1 EP2702208 B1 EP 2702208B1
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EP
European Patent Office
Prior art keywords
stiffener
sluice gate
stiffeners
web
secured
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.)
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Application number
EP12723624.8A
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German (de)
French (fr)
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EP2702208A2 (en
Inventor
Michel Cardis
Alain Michel
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GE Renewable Technologies Wind BV
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Alstom Renewable Technologies Wind BV
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Application filed by Alstom Renewable Technologies Wind BV filed Critical Alstom Renewable Technologies Wind BV
Priority to PL12723624T priority Critical patent/PL2702208T3/en
Priority to SI201230206T priority patent/SI2702208T1/en
Publication of EP2702208A2 publication Critical patent/EP2702208A2/en
Application granted granted Critical
Publication of EP2702208B1 publication Critical patent/EP2702208B1/en
Priority to HRP20150534TT priority patent/HRP20150534T1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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

Definitions

  • the present invention relates to a sluice gate for supporting a pressure exerted by a liquid on all or part of its surface.
  • Lock gate means a generally flat structure capable of retaining a free surface liquid.
  • a lock gate When in use, a lock gate separates a downstream basin from an upstream basin in which the liquid to be retained is located. This liquid submits the lock gate to distributed pressure, varying with time and distance at the bottom of the door.
  • a lock gate therefore works in fatigue since it undergoes cyclic stresses.
  • some doors, such as rolling doors, rising or lowering, work mainly in bending, both in a vertical direction and in a horizontal direction.
  • the structure of the known lock gates generally comprises a globally flat plating sheet and located on the downstream side, as well as several webs or webs extending horizontally along the plating sheet, each web being secured to this sheet to take up the constraints suffered. Indeed, the hydraulic pressure exerted on the door is generally transmitted to two vertical uprights located respectively on each side of the door, which implies the installation of horizontal webs along the plating sheet. These souls may have a solid or lattice structure.
  • a conventional lock gate generally comprises secondary horizontal stiffeners parallel to the webs as well as vertical stiffeners to ensure the vertical rigidity of the structure. Some of the vertical stiffeners may have a widening web shape downward of the structure.
  • the horizontal webs, the secondary horizontal stiffeners and the vertical stiffeners are welded to the plating sheet in order to take up the constraints that the latter undergoes.
  • the solid cores must themselves be provided with longitudinal and transverse stiffeners to avoid veiling in a vertical direction.
  • the structure of a conventional door therefore has the disadvantage of requiring a large number of welds which form between them as many weld crossings.
  • weld crosses weaken the structure when it works in fatigue, as is the case of the lock gates.
  • the transverse welds which extend in a substantially vertical direction, do not withstand the variations of the stresses according to the height of the liquid and particularly to the differences between the stresses exerted above and those exerted below the free surface of the liquid.
  • EP-A-1,972,722 discloses a sluice gate which comprises a plurality of thinned souls extending horizontally along the plating sheet. Each soul has several generally circular recesses. At least one tubular stiffener extends through the recesses of a plurality of successive cores and is welded to the cores on the periphery of the recesses. This structure requires fewer welds than a conventional lock gate, and is more resistant to bending and fatigue. However, it is relatively complex to manufacture such a sluice gate because the recesses traversed by the stiffener must be made with precise dimensions so as to obtain a satisfactory contact between the stiffener and the souls, in order to ensure the strength welds.
  • the invention relates to a sluice gate for supporting a pressure exerted by a liquid.
  • the sluice gate comprises a generally flat plating sheet and a plurality of thin cores extending along the plating sheet and substantially parallel to each other.
  • Each soul is secured to the plating sheet and each soul is pierced with several disjointed recesses.
  • the lock gate of the invention comprises at least one stiffener resulting from the assembly of several elements which are aligned along a longitudinal axis of the stiffener and which each extend between the webs, without crossing the webs.
  • Each element is secured to one side of at least one core, around one of the recesses.
  • the structure of the lock gate requires more or very few transverse welds, so that its fatigue strength is improved.
  • the stiffeners do not cross the horizontal souls since they consist of several elements assembled on both sides of the souls, which facilitates the manufacture of the lock gate
  • the figure 1 shows a planar structure capable of forming a lock gate 100.
  • the lock gate is a lifting gate, that is to say that it is lifted in vertical translation to allow communication upstream and downstream basins.
  • unrepresented hooking elements are provided on each side of the structure to allow to fix the lock gate on a lift mechanism known per se and which is not described.
  • the lock gate 100 may be lowering or rolling.
  • the Z axis coincides with a generally vertical direction when the lock gate 100 is installed in the lock.
  • XY a plane passing through the X and Y axes
  • XZ a plane passing through the X and Z axes
  • YZ a plane passing through the Y and Z axes.
  • the XY plane is globally horizontal and the XZ and YZ planes are generally vertical.
  • the qualifiers "upper” and “lower” refer to the orientation of the door 100 to the figure 1 where a lower end 11 of the door 100 is at the bottom of the Z axis, while an upper end 12 is at the top of the Z axis.
  • the lock gate 100 comprises a globally flat plating sheet 1 which extends parallel to the XZ plane.
  • the plating sheet 1 has a width L, measured along the axis X, substantially corresponding to the width of the channel to be controlled in the case of a lifting, lowering or rolling lock gate. In the example of the figures, the width L is equal to about 26 m.
  • the plating sheet 1 is intended to be placed on the downstream side of the door 100. In other words, the outer face of the plating sheet 1, facing towards the rear of the figure 1 , is intended to be turned towards a downstream basin.
  • the lock gate 100 also comprises two lateral uprights 61 and 62 which are parallel to the Z axis and which are located respectively at each lateral end of the plating sheet 1.
  • the uprights 61 and 62 consist of generally rectangular plates,
  • the uprights 61 and 62 are formed integrally with the plating sheet 1, for example by means of a bending or welding operation at each lateral end of the plating sheet. 1.
  • the lock gate 100 is manufactured by assembling six portions 101 to 106 superimposed on each other along the Z axis.
  • the portions 101 to 106 are arranged between the ends 11 and 12 of the lock gate 100 .
  • the plating sheet 1 consists of six flat sheet strips each corresponding to one of the parts 101 to 106 and extending longitudinally along the axis X. These strips are assembled together, for example by means of bolts. , bolted covers or welds that can be made on site, during assembly site.
  • the uprights 61 and 62 each consist of six rectangular sheet metal plates each corresponding to one of the parts 101 to 106.
  • the sluice gate 100 furthermore comprises fourteen thin and planar webs which extend between the uprights 61 and 62, parallel to the X-Y plane.
  • the number of souls 2 belonging to the door 100 depends in particular on the height of the door 100 and can be for example between ten and twenty-five.
  • Souls 2 are here formed by plates flat and identical to each other. They can each have a thickness of between 10 mm and 100 mm, depending on the pressure that must support the lock gate 100.
  • Each core 2 is secured to the plating sheet 1 by means of two lines of welds L1 and L2 extending over a substantial portion, and preferably over the whole, of the length L of the plating sheet 1 and part and else of the soul 2.
  • the weld lines L1 and L2 are shown only for the core 2 located at the top, it being understood that other similar weld lines connect each core 2 to the plating sheet 1.
  • each core 2 is welded by its ends at each post 61 or 62. The welds are sized to withstand the stresses when the liquid exerts pressure on the lock gate.
  • an edge B1 intended to be welded to the plating sheet 1 has a rectilinear profile so as to match the flat shape of the plating sheet 1.
  • each core 2 is delimited by an edge B2 which has a generally curved profile in the XY plane. This profile is defined so that a core 2 widens, in the direction Y, towards its center and narrows towards its ends. This makes it possible to give souls 2 good bending strength in the Y direction.
  • each core 2 has a parabolic B2 edge with a width l at its center of about 3 m and a width l 'at its ends about 50 cm.
  • the sluice gate 100 comprises fourteen flanges 301 to 314, each consisting of a thin strip of sheet metal and each extending vertically on the edge B2 of a core 2 and horizontally between the uprights 61 and 62.
  • Each sole 301 to 314 is secured to a core 2 so as to stiffen it.
  • the flanges 301 to 314 may for example be welded to the cores 2 by means of weld lines L3 and L4 extending along each of the edges B2 of the cores 2, or on a substantial part of these edges.
  • the welding lines L3 and L4 are represented only for the sole 314 located at the top at the figure 4 , it being understood that other similar weld lines connect each flange 301 to 314 to the plating sheet 1.
  • the soles 301 to 314 are arranged successively, along the Z axis, one above the other, with the sole 301 secured to the core 2 located at the bottom to the figure 4 and the sole 314 secured to the core 2 located at the top of the figure 4 .
  • each core 2 and the sole 301 to 314 secured to this core 2 defines a beam which has a cross section, perpendicular to the XY plane, T-shaped. These beams structure the lock gate 100, thereby contributing to its mechanical strength.
  • the soles 301 to 314 also have a generally parabolic profile, which makes it possible to obtain a compression force supported by each sole 301 to 314 that is substantially constant on the along the souls 2 and compensating the shear force exerted in each section of a sole 301 to 314 except, optionally, at its lateral ends.
  • Curved profiles other than parabolic, for example elliptical, may be used to make the edges B2 of the cores 2 and the flanges 301 to 314 in order to distribute and balance such forces, the central part of each core 2 being wider than its ends.
  • each core 2 has seven disjointed recesses 201 to 207 which are distributed along its central part.
  • the recesses 201 to 207 are arranged at the same location for each core 2 and extend successively next to each other, along the axis X.
  • the recesses 201 to 207 are circular and d201 d207 are noted their respective diameters .
  • the recesses 201 to 207 of each core 2 are symmetrical with respect to the plane A.
  • the diameters d201, d202 and d203 are respectively equal to the diameters d207, d206 and d205, the recess 204 being centered on the plane A.
  • the diameter d201 to d207 of each recess 201 to 207 is less than the width of the section of the core 2 where the recess 201 to 207 is.
  • the recesses 201 of the different cores 2 are aligned along the same axis Z201 parallel to the axis Z. In the same way, the recesses 202 to 207 of the cores 2 are aligned with each other along the same axis, no represented, parallel to the Z axis.
  • the lock gate 100 also comprises four stiffeners 401 to 404 in the form of a hollow cylinder with a circular base, which extend parallel to the axis Z.
  • the stiffeners 401 and 404 are closer to the uprights 61 and 62 than the stiffeners. 402 and 403.
  • the stiffeners 402 and 403 are located between the stiffeners 401 and 404.
  • the stiffeners 402 and 403 are central stiffeners located between the lateral stiffeners 401 and 404.
  • the stiffeners 401 to 404 are coaxial respectively with the recesses 201, 203, 205 and 207.
  • the stiffener 401 is aligned along the axis Z201 with the recesses 201 of the different cores 2.
  • a longitudinal central axis Z401 of the stiffener 401 is aligned with the axis Z201 of the recesses 201.
  • the stiffeners 402 to 404 are respectively aligned parallel to the Z axis with the recesses 203, 205 and 207.
  • the recesses 202, 204 and 206 are located each between two stiffeners 401 to 404 adjacent.
  • the central stiffeners 402 and 403 have a diameter D42 greater than the diameter D41 of the lateral stiffeners 401 and 404.
  • the stiffeners 401 and 404 have a diameter D41 greater than the diameter d201 and d207 of the recesses 201 and 207
  • the stiffeners 402 and 403 have a diameter D42 greater than the diameter d203 and d205 of the recesses 203 and 205.
  • annular portion 24 extends around each recess 201, 203, 205 and 207 between the recess and the side wall of the corresponding stiffener 401 to 404.
  • the annular portions 24 have an internal diameter corresponding to the respective diameters d201, d203, d205 and d207 of the recesses 201, 203, 205 and 207, and an external diameter corresponding to the diameter D41 and D42 of the stiffeners 401 to 404.
  • the annular parts 24 delimited by the stiffeners 402 and 403 have an outer diameter greater than the outer diameter of the annular portions 24 defined by the stiffeners 401 and 404.
  • the recesses 202, 204, 206 and the stiffeners 401 to 404 together define a first strip 21 along the straight edge B1 in the vicinity of the plating sheet 1, a second strip 22 along the edge B2 and bridges 23 interconnecting the strips 21 and 22 and extending perpendicular to the edge B1 between two recesses 201 to 207 neighbors.
  • the strips 21 and 22 are represented by dashed lines generally parallel to each longitudinal edge B1 and B2 of the core 2.
  • the cores 2 are therefore of the "bow-string" type.
  • each bridge 23 allows a progressive distribution of the stresses between the strips 21 and 22 and the bridges 23.
  • the recesses 201 to 207 could have other shapes, provided that they delimit regions similar to the strips 21, 22 and bridges 23.
  • each band 21 works in traction, because it is subjected to stresses oriented in the longitudinal direction X of the core 2.
  • the strips 21 can not be reached. to veil, that is to say to deform out of a horizontal plane parallel to the plane XY.
  • the strips 22 work in their compression, but they are stiffened by the soles 301 to 314 which are welded perpendicularly.
  • the strips 22 thus have a low risk, or even zero, of buckling along the Z axis.
  • the soles 301 to 314 constitute with the strips 21 elements with a "T" section presenting a relatively high moment of inertia. relative to the Y and Z axes.
  • the width l22 of a strip 22, taken parallel to the Y axis, that is to say perpendicular to the vertical and the length L of the core 2, is less than twenty times, and preferably fifteen times the thickness of the core 2. Such a dimensioning further reduces the risk of buckling of the bands 22 in use.
  • the width of the annular portions 24, measured radially between each recesses 201, 203, 204 and 207 and the corresponding stiffener 401 to 404, is less than the width l22.
  • the bridges 23 work in traction, that is to say that they transmit transverse forces to the strips 21 and 22.
  • the bridges 23 therefore also have a low risk of buckling or zero.
  • the plating sheet 1, the cores 2, the uprights 61 and 62 and the flanges 301 to 314 consist of at least one metal having good mechanical properties and good weldability, such as the grade S355J2 structural steel.
  • Each stiffener 401 to 404 is multipartite, that is to say that it consists of several tubular elements aligned along its longitudinal axis, parallel to the axis Z. Thus, the tubular elements do not pass through the cores 2 but are welded on both sides of the cores 2, around the annular portions 24.
  • the stiffener 403 comprises twenty tubular elements 431 to 450 successively arranged one above the other between the ends 11 and 12 of the door 100.
  • the tubular element 431 extends at the lower end 11 of the lock gate 100 and the tubular member 450 extends at the upper end 450 of the lock gate 100.
  • stiffeners 401, 402 and 404 also comprise twenty tubular elements successively arranged one above the other.
  • tubular members 431 to 434, 435 to 438 and 439 to 441 extend at each of the three lower portions 101 to 103 of the lock gate 100.
  • Three tubular members 442 to 444, 445 to 447 and 448 to 450 extend at each of the three upper portions 104 to 106.
  • the tubular element 431 extends longitudinally between the lower end 11 of the door 100 and the core 2 which is situated at the bottom of the door. figure 4 and secured to the sole 301.
  • the tubular element 431 may for example be welded to the lower face 25 of this core 2 by means of a weld line L5 extending over the entire inner periphery of the tubular element 431, or on a substantial part of this periphery.
  • the tubular element 432 extends between the upper face 26 of the core 2 secured to the sole 301 and the lower face 25 of the core 2 secured to the sole 302.
  • the tubular element 432 may for example be welded to the faces 25 and 26 of the cores 2 corresponding by means of unrepresented weld lines extending over the inner periphery of the tubular element 432.
  • the tubular element 433 extends between the core 2 secured to the sole 302 and the core 2 secured to the sole 303.
  • Two tubular elements 434 and 435 extend between the core 2 secured to the sole 303 and the core 2 secured to the sole 304.
  • the upper end of the tubular element 434 is assembled, for example by welding or by bolts at the lower end of the tubular member 435.
  • tubular elements 435 to 450 are assembled to the faces 25 and 26 of the cores 2 in a similar way to the part 101.
  • each element 431 to 450 is secured to a face 25 or 26 of at least one core 2, around one of the recesses 201, 203, 205 and 207.
  • each element 431 to 450 is secured to a face 25 or 26 of at least one core 2, around each of the recesses 201, 203, 205 or 207 to the right of which is mounted this element 431 to 450, that is to say the vertical or the plumb with the recesses 201, 203, 204 or 207, along the longitudinal axis Z401 of the stiffener 401 to 404 resulting from the assembly of this element 431 to 450.
  • each stiffener 401 to 404 are located at the interfaces between two adjacent portions 101 to 106 and are directly connected to each other.
  • each of the parts 101 to 106 separately, then to assemble the parts 101 to 106 between them, for example at the site of use of the lock gate 100.
  • the parts 101 to 106 are each composed of a portion of the plating sheet 1, a portion of the uprights 61 and 62, several souls 2 and soles 301 to 314 secured to these souls 2.
  • each part 101 to 106 comprises several tubular elements 431 to 450.
  • the tubular elements 448, 449 and 450 of the stiffener 401 are located at the upper part 106 and are connected to the sheet of plating by a sheet metal plate 501.
  • the tubular elements of the stiffeners 402, 403 and 404 which are situated at the level of the part 106 are connected to the sheet of plating by a sheet metal plate 502, 503 or 504.
  • the plates 501 to 504 are multipartite and consist of several elements which extend parallel to the Z axis between the cores 2. Each element constituting the plates 501 to 504 is welded, on the one hand, to the tubular elements 448, 449 , 450 and equivalent of the stiffeners 401 to 404 and, on the other hand, to the cores 2 corresponding.
  • the stiffeners 401 to 404 are secured to the plating sheet 1, which blocks in particular the vertical translation along the Z axis of the stiffeners 401 to 404 relative to the plating sheet 1. This contributes to increasing the mechanical strength of the sluice gate 100, in particular the buckling resistance of the flanges 301 to 314.
  • the stiffeners 401 to 404 being secured to the cores 2, they take part of the forces exerted on the cores 2 along the Z axis.
  • the stiffeners 401 to 404 increase the vertical rigidity of the entire lock gate 100 and its mechanical resistance to the pressure P.
  • the stiffeners 401 to 404 can each connect all the souls 2 or only a part of them, according to the needs of the intended application. Alternatively, the stiffeners 401 to 404 may be full. It is also possible, if necessary, to have other tubular elements through the recesses 202, 204 and 206 adjacent to the recesses 201, 203, 205 and 207. Furthermore, the stiffeners 401 to 404 may consist of sectional tubular elements. not circular, but, for example, elliptical or polygonal.
  • the "bow-string" type structure of the webs 2, stiffened by the stiffeners 401 to 404, allows the sluice gate 100 to withstand the stresses generated by the pressure P of the liquid on the plating sheet 1 and on the soles 301 to 314, without substantial risk of buckling.
  • the stiffeners 401 to 404 are hollow and as the webs 2 have recesses 202, 204 and 206 free, the water can easily go up on the height of the lock gate 100, which avoids the momentary differences in constraints between regions and improves the mechanical strength of the lock gate 100.
  • h300 is a height of the flanges 301 to 341, measured along the axis Z.
  • the height h300 corresponds to the width of the sheet metal strip which constitutes the soles 301 to 314.
  • the soles 301 to 341 have a height h300 decreasing upwards.
  • the height h300 of the sole 301 is larger than the height h300 of the sole 314.
  • the section of the soles 301 to 314 is decreasing upwards.
  • the webs 2 located at the bottom of the lock gate 100 are closer to one another than the webs 2 located at the top of the lock gate 100.
  • the height of the parts 101 to 106 decreases between the ends 11 and 12 of the door 100. This is related to the fact that the forces entered by the lock gate 100, at its lower end 11, are larger than the at its upper end 12, since the water retained by the sluice gate 100 exerts a pressure P which increases downward along the Z axis between the ends 12 and 11.
  • Such a sluice gate requires fewer welds than the doors of the prior art, which makes it possible to reduce the weight of the sluice gate 100.
  • these welds extend essentially in the same directions as the main stresses to the door, which increases their strength and that of the door. lock gate, especially to fatigue. Indeed, in the lock gate 100 of the invention, the welds most affected by the phenomenon of fatigue are removed. Thanks to the lock gate 100 of the invention, it is not necessary to make the recesses 201, 203, 205 and 207 with precise geometrical tolerances, because the tubular elements 431 to 450 and the like do not pass through the recesses.
  • the manufacture of the lock gate 100 of the invention is relatively easy. Indeed, if the tubular elements 431 to 350 and equivalents traversed the recesses 201, 203, 205 and 207, it would be necessary to have a precise adjustment of the tubular elements and the recesses, so as to ensure a satisfactory contact between these elements, in order to ensure the strength of the welds. With regard to the lock gate 100 of the invention, it is sufficient that the height of the tubular elements is equal to the spacing between two adjacent cores to ensure the quality of the welds, which is easier to achieve.
  • the annular portions 24 constitute additional material which takes the efforts cashed by the lock gate 100 and contributes to ensure its mechanical strength.
  • the strength of the welds L5 connecting the tubular elements 431 to 450 and equivalents of the stiffeners 401 to 404 with the faces 25 and 26 of the cores 2 is relatively high.
  • the lock gate 100 thus formed is substantially lightened, on the one hand, thanks to the recesses 201 to 207 and to the small thickness of the cores 2 and, on the other hand, thanks to the reduction in the number of welds required.
  • a door 100 has, at equal mass, mechanical strength in fatigue and flexion greater than those of the front doors.
  • the recesses 201 to 207 may not be circular, and in this case the diameter d200 corresponds to a maximum dimension of the recesses, measured in the plane of a core 2.
  • the stiffeners 401 to 404 are not cylindrical with a circular base.
  • the diameters D41 and D42 correspond to a maximum dimension of the stiffeners, measured in the plane of a core 2.

Description

La présente invention concerne une porte d'écluse destinée à supporter une pression exercée par un liquide sur tout ou partie de sa surface. Par porte d'écluse, on désigne une structure globalement plane susceptible de retenir un liquide à surface libre.The present invention relates to a sluice gate for supporting a pressure exerted by a liquid on all or part of its surface. Lock gate means a generally flat structure capable of retaining a free surface liquid.

Lorsqu'elle est en service, une porte d'écluse sépare un bassin aval d'un bassin amont dans lequel se trouve le liquide à retenir. Ce liquide soumet la porte d'écluse à une pression répartie, variant en fonction du temps et de la distance au bas de la porte. Une porte d'écluse travaille donc en fatigue puisqu'elle subit des sollicitations cycliques. De plus, certaines portes, telles que les portes roulantes, levantes ou abaissantes, travaillent essentiellement en flexion, à la fois selon une direction verticale et selon une direction horizontale.When in use, a lock gate separates a downstream basin from an upstream basin in which the liquid to be retained is located. This liquid submits the lock gate to distributed pressure, varying with time and distance at the bottom of the door. A lock gate therefore works in fatigue since it undergoes cyclic stresses. In addition, some doors, such as rolling doors, rising or lowering, work mainly in bending, both in a vertical direction and in a horizontal direction.

La structure des portes d'écluses connues comporte généralement une tôle de bordé globalement plane et située du côté aval, ainsi que plusieurs âmes ou voiles s'étendant horizontalement le long de la tôle de bordé, chaque âme étant solidarisée à cette tôle pour en reprendre les contraintes subies. En effet, la pression hydraulique exercée sur la porte est généralement transmise à deux montants verticaux situés respectivement de chaque côté de la porte, ce qui implique l'installation des âmes horizontales le long de la tôle de bordé. Ces âmes peuvent présenter une structure pleine ou en treillis.The structure of the known lock gates generally comprises a globally flat plating sheet and located on the downstream side, as well as several webs or webs extending horizontally along the plating sheet, each web being secured to this sheet to take up the constraints suffered. Indeed, the hydraulic pressure exerted on the door is generally transmitted to two vertical uprights located respectively on each side of the door, which implies the installation of horizontal webs along the plating sheet. These souls may have a solid or lattice structure.

De plus, une porte d'écluse conventionnelle comprend généralement des raidisseurs horizontaux secondaires parallèles aux âmes ainsi que des raidisseurs verticaux permettant d'assurer la rigidité verticale de la structure. Certains des raidisseurs verticaux peuvent présenter une forme de voile s'élargissant vers le bas de la structure.In addition, a conventional lock gate generally comprises secondary horizontal stiffeners parallel to the webs as well as vertical stiffeners to ensure the vertical rigidity of the structure. Some of the vertical stiffeners may have a widening web shape downward of the structure.

En général, les âmes horizontales, les raidisseurs horizontaux secondaires et les raidisseurs verticaux sont soudés sur la tôle de bordé afin de reprendre les contraintes que subit cette dernière. En outre, les âmes pleines doivent elles-mêmes être munies de raidisseurs longitudinaux et transversaux pour éviter de se voiler selon une direction verticale.In general, the horizontal webs, the secondary horizontal stiffeners and the vertical stiffeners are welded to the plating sheet in order to take up the constraints that the latter undergoes. In addition, the solid cores must themselves be provided with longitudinal and transverse stiffeners to avoid veiling in a vertical direction.

La structure d'une porte conventionnelle présente donc l'inconvénient de nécessiter de très nombreuses soudures qui forment entre elles autant de croisements de soudures. Or, de tels croisements de soudure fragilisent la structure lorsqu'elle travaille en fatigue, comme c'est le cas des portes d'écluse. En particulier, les soudures transversales, qui s'étendent selon une direction essentiellement verticale, résistent mal aux variations des contraintes selon la hauteur de liquide et particulièrement aux différences entre les contraintes exercées au-dessus et celles exercées au-dessous de la surface libre du liquide.The structure of a conventional door therefore has the disadvantage of requiring a large number of welds which form between them as many weld crossings. However, such weld crosses weaken the structure when it works in fatigue, as is the case of the lock gates. In particular, the transverse welds, which extend in a substantially vertical direction, do not withstand the variations of the stresses according to the height of the liquid and particularly to the differences between the stresses exerted above and those exerted below the free surface of the liquid.

EP-A-1 972 722 divulgue une porte d'écluse qui comprend plusieurs âmes amincies s'étendant horizontalement le long de la tôle de bordé. Chaque âme présente plusieurs évidements globalement circulaires. Au moins un raidisseur tubulaire s'étend au travers des évidements de plusieurs âmes successives et est soudé aux âmes, sur la périphérie des évidements. Cette structure nécessite moins de soudures qu'une porte d'écluse conventionnelle, et s'avère plus résistante à la flexion et à la fatigue. Toutefois, il est relativement complexe de fabriquer une telle porte d'écluse car les évidements traversés par le raidisseur doivent être réalisés avec des dimensions précises de manière à obtenir un contact satisfaisant entre le raidisseur et les âmes, dans le but d'assurer la solidité des soudures. EP-A-1,972,722 discloses a sluice gate which comprises a plurality of thinned souls extending horizontally along the plating sheet. Each soul has several generally circular recesses. At least one tubular stiffener extends through the recesses of a plurality of successive cores and is welded to the cores on the periphery of the recesses. This structure requires fewer welds than a conventional lock gate, and is more resistant to bending and fatigue. However, it is relatively complex to manufacture such a sluice gate because the recesses traversed by the stiffener must be made with precise dimensions so as to obtain a satisfactory contact between the stiffener and the souls, in order to ensure the strength welds.

A cet effet, l'invention concerne une porte d'écluse, destinée à supporter une pression exercée par un liquide. La porte d'écluse comprend une tôle de bordé globalement plane et une pluralité d'âmes minces s'étendant le long de la tôle de bordé et sensiblement parallèlement entre elles. Chaque âme est solidarisée à la tôle de bordé et chaque âme est percée de plusieurs évidements disjoints. La porte d'écluse de l'invention comprend au moins un raidisseur résultant de l'assemblage de plusieurs éléments qui sont alignés le long d'un axe longitudinal du raidisseur et qui s'étendent chacun entre les âmes, sans traverser les âmes. Chaque élément est solidarisé à une face d'au moins une âme, autour de l'un des évidements.To this end, the invention relates to a sluice gate for supporting a pressure exerted by a liquid. The sluice gate comprises a generally flat plating sheet and a plurality of thin cores extending along the plating sheet and substantially parallel to each other. Each soul is secured to the plating sheet and each soul is pierced with several disjointed recesses. The lock gate of the invention comprises at least one stiffener resulting from the assembly of several elements which are aligned along a longitudinal axis of the stiffener and which each extend between the webs, without crossing the webs. Each element is secured to one side of at least one core, around one of the recesses.

Grâce à l'invention, la structure de la porte d'écluse ne nécessite plus ou très peu de soudures transversales, si bien que sa résistance en fatigue est améliorée. De plus, les raidisseurs ne traversent pas les âmes horizontales puisqu'ils sont constitués de plusieurs éléments assemblés de part et d'autre des âmes, ce qui facilite la fabrication de la porte d'écluseThanks to the invention, the structure of the lock gate requires more or very few transverse welds, so that its fatigue strength is improved. In addition, the stiffeners do not cross the horizontal souls since they consist of several elements assembled on both sides of the souls, which facilitates the manufacture of the lock gate

Selon d'autres caractéristiques avantageuses mais facultatives de l'invention, prises isolément ou selon toute combinaison techniquement admissible :

  • pour chaque âme et dans le plan d'une âme, les évidements présentent une dimension maximale inférieure à une dimension maximale du raidisseur ; pour chaque élément, une partie annulaire de l'âme s'étend entre cet élément et l'évidement autour duquel s'étend cet élément ;
  • chaque raidisseur est cylindrique à section circulaire en en ce que les éléments du raidisseur sont tubulaires ;
  • la porte d'écluse comprend des semelles solidarisées chacune à une seule âme, au moyen de lignes de soudure s'étendant sur une partie substantielle des bords courbes respectifs des âmes ;
  • l'ensemble constitué par une âme et la semelle solidarisée à cette âme forme une poutre dont la section transversale est en forme de « T » ;
  • la porte d'écluse est fabriquée en assemblant entre elles plusieurs parties composées chacune d'une partie de la tôle de bordé, de plusieurs âmes et de plusieurs éléments de chaque raidisseur ;
  • les éléments du raidisseur qui sont situés au niveau des interfaces entre deux parties adjacentes sont solidarisés directement les uns aux autres, notamment par soudage ou au moyen de boulons ;
  • la porte comprend plusieurs raidisseurs ;
  • chaque âme comprend un évidement ménagé entre deux raidisseurs adjacents, cet évidement n'étant pas entouré par un raidisseur ;
  • la porte comprend au moins trois raidisseurs, les raidisseurs incluent au moins un raidisseur central et deux raidisseurs latéraux qui sont situés entre le raidisseur central et un montant latéral de la porte d'écluse et dans le plan d'une âme, chaque raidisseur central présente une dimension maximale supérieure à une dimension maximale des raidisseurs latéraux.
According to other advantageous but optional features of the invention, taken alone or in any technically permissible combination:
  • for each soul and in the plane of a soul, the recesses have a maximum dimension less than a maximum dimension of the stiffener; for each element, an annular portion of the core extends between this element and the recess around which this element extends;
  • each stiffener is cylindrical with a circular section in that the elements of the stiffener are tubular;
  • the sluice gate comprises soles each secured to a single core, by means of weld lines extending over a substantial portion of the respective curved edges of the webs;
  • the assembly consisting of a core and the sole secured to this core forms a beam whose cross section is shaped "T";
  • the sluice gate is manufactured by joining together several parts each consisting of a portion of the plating sheet, several cores and several elements of each stiffener;
  • the elements of the stiffener which are located at the interfaces between two adjacent parts are secured directly to each other, in particular by welding or by means of bolts;
  • the door includes several stiffeners;
  • each core comprises a recess formed between two adjacent stiffeners, this recess not being surrounded by a stiffener;
  • the door comprises at least three stiffeners, the stiffeners include at least one central stiffener and two lateral stiffeners which are located between the central stiffener and a side jamb of the lock gate and in the plane of a web, each central stiffener a maximum dimension greater than a maximum dimension of the lateral stiffeners.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'une porte d'écluse, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective d'une porte d'écluse conforme à l'invention ;
  • la figure 2 est une vue de dessus de la porte d'écluse de la figure 1 ;
  • la figure 3 est vue de côté de la porte d'écluse de la figure 1 ; et
  • la figure 4 est une coupe selon le plan A à la figure 1.
The invention will be better understood and other advantages thereof will emerge more clearly in the light of the following description of a lock gate, given solely by way of example and with reference to the accompanying drawings in FIG. which :
  • the figure 1 is a perspective view of a lock gate according to the invention;
  • the figure 2 is a top view of the lock gate of the figure 1 ;
  • the figure 3 is seen from the side of the lock gate of the figure 1 ; and
  • the figure 4 is a cut according to plane A to the figure 1 .

La figure 1 montre une structure plane apte à former une porte d'écluse 100. Dans l'exemple des figures, la porte d'écluse est une porte levante, c'est-à-dire qu'elle est levée en translation verticale pour permettre la communication des bassins amont et aval. Pour cela, des éléments d'accrochage non représentés sont prévus de chaque côté de la structure pour permettre de fixer la porte d'écluse sur un mécanisme d'élévation connu en soi et qui n'est pas décrit.The figure 1 shows a planar structure capable of forming a lock gate 100. In the example of the figures, the lock gate is a lifting gate, that is to say that it is lifted in vertical translation to allow communication upstream and downstream basins. For this, unrepresented hooking elements are provided on each side of the structure to allow to fix the lock gate on a lift mechanism known per se and which is not described.

En variante, la porte d'écluse 100 peut être abaissante ou roulante.Alternatively, the lock gate 100 may be lowering or rolling.

Trois axes X, Y et Z formant un repère orthogonal sont représentés à la figure 1. L'axe Z coïncide avec une direction globalement verticale lorsque la porte d'écluse 100 est installée dans l'écluse. On note X-Y un plan passant par les axes X et Y, on note X-Z un plan passant par les axes X et Z et on note Y-Z un plan passant par les axes Y et Z. En service, le plan X-Y est globalement horizontal et les plans X-Z et Y-Z sont globalement verticaux.Three X, Y and Z axes forming an orthogonal coordinate system are represented at figure 1 . The Z axis coincides with a generally vertical direction when the lock gate 100 is installed in the lock. We denote by XY a plane passing through the X and Y axes, we denote by XZ a plane passing through the X and Z axes and we denote by YZ a plane passing through the Y and Z axes. In use, the XY plane is globally horizontal and the XZ and YZ planes are generally vertical.

Dans la suite, les qualificatifs « supérieur » et « inférieur » font référence à l'orientation de la porte 100 à la figure 1, où une extrémité inférieure 11 de la porte 100 est en bas de l'axe Z, tandis qu'une extrémité supérieure 12 est en haut de l'axe Z.In the following, the qualifiers "upper" and "lower" refer to the orientation of the door 100 to the figure 1 where a lower end 11 of the door 100 is at the bottom of the Z axis, while an upper end 12 is at the top of the Z axis.

La porte d'écluse 100 comprend une tôle de bordé 1 globalement plane qui s'étend parallèlement au plan X-Z. La tôle de bordé 1 présente une largeur L, mesurée le long de l'axe X, correspondant sensiblement à la largeur du canal à contrôler dans le cas d'une porte d'écluse levante, abaissante ou roulante. Dans l'exemple des figures, la largeur L est égale à 26 m environ. La tôle de bordé 1 est destinée à être placée du côté aval de la porte 100. Autrement dit, la face externe de la tôle de bordé 1, orientée vers l'arrière de la figure 1, est destinée à être tournée vers un bassin aval.The lock gate 100 comprises a globally flat plating sheet 1 which extends parallel to the XZ plane. The plating sheet 1 has a width L, measured along the axis X, substantially corresponding to the width of the channel to be controlled in the case of a lifting, lowering or rolling lock gate. In the example of the figures, the width L is equal to about 26 m. The plating sheet 1 is intended to be placed on the downstream side of the door 100. In other words, the outer face of the plating sheet 1, facing towards the rear of the figure 1 , is intended to be turned towards a downstream basin.

La porte d'écluse 100 comprend également deux montants latéraux 61 et 62 qui sont parallèles à l'axe Z et qui sont situés respectivement à chaque extrémité latérale de la tôle de bordé 1. Les montants 61 et 62 sont constitués de plaques globalement rectangulaires, étroites et montées perpendiculairement à la tôle de bordé 1. Les montants 61 et 62 sont formés intégralement avec la tôle de bordé 1, par exemple au moyen d'une opération de pliage ou de soudage au niveau de chaque extrémité latérale de la tôle de bordé 1.The lock gate 100 also comprises two lateral uprights 61 and 62 which are parallel to the Z axis and which are located respectively at each lateral end of the plating sheet 1. The uprights 61 and 62 consist of generally rectangular plates, The uprights 61 and 62 are formed integrally with the plating sheet 1, for example by means of a bending or welding operation at each lateral end of the plating sheet. 1.

La porte d'écluse 100 est fabriquée par assemblage de six parties 101 à 106 superposées les unes sur les autres le long de l'axe Z. Les parties 101 à 106 sont agencées entre les extrémités 11 et 12 de la porte d'écluse 100.The lock gate 100 is manufactured by assembling six portions 101 to 106 superimposed on each other along the Z axis. The portions 101 to 106 are arranged between the ends 11 and 12 of the lock gate 100 .

Ainsi, la tôle de bordé 1 est constituée de six bandes de tôle planes correspondant chacune à une des parties 101 à 106 et s'étendant longitudinalement le long de l'axe X. Ces bandes sont assemblées entre elles, par exemple au moyen de boulons, de couvre-joints boulonnés ou de soudures pouvant être effectuées sur site, lors du montage chantier. De la même manière, les montants 61 et 62 sont constitués chacun de six plaques de tôle rectangulaires correspondant chacune à une des parties 101 à 106.Thus, the plating sheet 1 consists of six flat sheet strips each corresponding to one of the parts 101 to 106 and extending longitudinally along the axis X. These strips are assembled together, for example by means of bolts. , bolted covers or welds that can be made on site, during assembly site. In the same way, the uprights 61 and 62 each consist of six rectangular sheet metal plates each corresponding to one of the parts 101 to 106.

La porte d'écluse 100 comprend par ailleurs quatorze âmes 2 minces et planes qui s'étendent entre les montants 61 et 62, parallèlement au plan X-Y. Le nombre d'âmes 2 appartenant à la porte 100 dépend notamment de la hauteur de la porte 100 et il peut être compris par exemple entre dix et vingt-cinq.The sluice gate 100 furthermore comprises fourteen thin and planar webs which extend between the uprights 61 and 62, parallel to the X-Y plane. The number of souls 2 belonging to the door 100 depends in particular on the height of the door 100 and can be for example between ten and twenty-five.

Par âme mince on désigne une âme dont l'épaisseur est faible devant ses autres dimensions et notamment devant sa largeur. Les âmes 2 sont ici formées par des plaques planes et identiques entre elles. Elles peuvent avoir chacune une épaisseur comprise entre 10 mm et 100 mm, selon la pression que doit supporter la porte d'écluse 100.By thin soul is meant a soul whose thickness is small in front of its other dimensions and in particular in front of its width. Souls 2 are here formed by plates flat and identical to each other. They can each have a thickness of between 10 mm and 100 mm, depending on the pressure that must support the lock gate 100.

Chaque âme 2 est solidarisée à la tôle de bordé 1 au moyen de deux lignes de soudures L1 et L2 s'étendant sur une partie substantielle, et de préférence sur la totalité, de la longueur L de la tôle de bordé 1 et de part et d'autre de l'âme 2. A la figure 4, les lignes de soudure L1 et L2 sont représentées uniquement pour l'âme 2 située en haut, étant entendu que d'autres lignes de soudure analogues relient chaque âme 2 à la tôle de bordé 1. De plus, chaque âme 2 est soudée par ses extrémités à chaque montant 61 ou 62. Les soudures sont dimensionnées de façon à supporter les contraintes lorsque le liquide exerce une pression sur la porte d'écluse.Each core 2 is secured to the plating sheet 1 by means of two lines of welds L1 and L2 extending over a substantial portion, and preferably over the whole, of the length L of the plating sheet 1 and part and else of the soul 2. At the figure 4 , the weld lines L1 and L2 are shown only for the core 2 located at the top, it being understood that other similar weld lines connect each core 2 to the plating sheet 1. In addition, each core 2 is welded by its ends at each post 61 or 62. The welds are sized to withstand the stresses when the liquid exerts pressure on the lock gate.

Pour chaque âme 2, un bord B1 destiné à être soudé sur la tôle de bordé 1 présente un profil rectiligne de façon à épouser la forme plane de la tôle de bordé 1. Du côté opposé à la tôle de bordé 1, chaque âme 2 est délimitée par un bord B2 qui présente un profil globalement courbe dans le plan X-Y. Ce profil est défini de sorte qu'une âme 2 s'élargit, selon la direction Y, vers son milieu et se rétrécit vers ses extrémités. Cela permet de conférer aux âmes 2 une bonne résistance en flexion selon la direction Y. En l'occurrence, chaque âme 2 présente un bord B2 parabolique avec une largeur ℓ en son milieu d'environ 3 m et une largeur ℓ' au niveau de ses extrémités d'environ 50 cm.For each core 2, an edge B1 intended to be welded to the plating sheet 1 has a rectilinear profile so as to match the flat shape of the plating sheet 1. On the opposite side to the plating sheet 1, each core 2 is delimited by an edge B2 which has a generally curved profile in the XY plane. This profile is defined so that a core 2 widens, in the direction Y, towards its center and narrows towards its ends. This makes it possible to give souls 2 good bending strength in the Y direction. In this case, each core 2 has a parabolic B2 edge with a width ℓ at its center of about 3 m and a width ℓ 'at its ends about 50 cm.

Du côté opposé à la tôle de bordé 1, la porte d'écluse 100 comprend quatorze semelles 301 à 314, constituées chacune d'une bande mince en tôle et s'étendant chacune verticalement sur le bord B2 d'une âme 2 et horizontalement entre les montants 61 et 62. Chaque semelle 301 à 314 est solidarisée à une âme 2 de manière à la rigidifier.On the opposite side to the plating sheet 1, the sluice gate 100 comprises fourteen flanges 301 to 314, each consisting of a thin strip of sheet metal and each extending vertically on the edge B2 of a core 2 and horizontally between the uprights 61 and 62. Each sole 301 to 314 is secured to a core 2 so as to stiffen it.

Les semelles 301 à 314 peuvent par exemple être soudées sur les âmes 2 au moyen de lignes de soudure L3 et L4 s'étendant tout le long de chacun des bords B2 des âmes 2, ou sur une partie substantielle de ces bords. Les lignes de soudure L3 et L4 sont représentées uniquement pour la semelle 314 située en haut à la figure 4, étant entendu que d'autres lignes de soudure analogues relient chaque semelle 301 à 314 à la tôle de bordé 1.The flanges 301 to 314 may for example be welded to the cores 2 by means of weld lines L3 and L4 extending along each of the edges B2 of the cores 2, or on a substantial part of these edges. The welding lines L3 and L4 are represented only for the sole 314 located at the top at the figure 4 , it being understood that other similar weld lines connect each flange 301 to 314 to the plating sheet 1.

Les semelles 301 à 314 sont agencées successivement, le long de l'axe Z, les unes au dessus des autres, avec la semelle 301 solidarisée à l'âme 2 située en bas à la figure 4 et la semelle 314 solidarisée à l'âme 2 située en haut à la figure 4.The soles 301 to 314 are arranged successively, along the Z axis, one above the other, with the sole 301 secured to the core 2 located at the bottom to the figure 4 and the sole 314 secured to the core 2 located at the top of the figure 4 .

L'ensemble formé par chaque âme 2 et la semelle 301 à 314 solidarisée à cette âme 2 définit une poutre qui présente une section transversale, perpendiculaire au plan X-Y, en forme de T. Ces poutres structurent la porte d'écluse 100, contribuant ainsi à sa résistance mécanique.The assembly formed by each core 2 and the sole 301 to 314 secured to this core 2 defines a beam which has a cross section, perpendicular to the XY plane, T-shaped. These beams structure the lock gate 100, thereby contributing to its mechanical strength.

Dans la mesure où une semelle 301 à 314 épouse le bord B2 de chaque âme 2, les semelles 301 à 314 présentent également un profil globalement parabolique, ce qui permet d'obtenir un effort de compression supporté par chaque semelle 301 à 314 pratiquement constant le long des âmes 2 et compensant l'effort tranchant s'exerçant dans chaque section d'une semelle 301 à 314 sauf, éventuellement, au niveau de ses extrémités latérales.Insofar as a sole 301 to 314 matches the edge B2 of each core 2, the soles 301 to 314 also have a generally parabolic profile, which makes it possible to obtain a compression force supported by each sole 301 to 314 that is substantially constant on the along the souls 2 and compensating the shear force exerted in each section of a sole 301 to 314 except, optionally, at its lateral ends.

Des profils courbes autres que paraboliques, par exemple elliptiques, peuvent être utilisés pour réaliser les bords B2 des âmes 2 et les semelles 301 à 314 dans le but de répartir et équilibrer de tels efforts, la partie centrale de chaque âme 2 étant plus large que ses extrémités.Curved profiles other than parabolic, for example elliptical, may be used to make the edges B2 of the cores 2 and the flanges 301 to 314 in order to distribute and balance such forces, the central part of each core 2 being wider than its ends.

Par ailleurs, chaque âme 2 présente sept évidements 201 à 207 disjoints qui sont répartis le long de sa partie centrale. Les évidements 201 à 207 sont ménagés au même endroit pour chaque âme 2 et s'étendent successivement les uns à côté des autres, le long de l'axe X. Les évidements 201 à 207 sont circulaires et on note d201 à d207 leurs diamètres respectifs. Les évidements 201 à 207 de chaque âme 2 sont symétriques par rapport au plan A. Ainsi, les diamètres d201, d202 et d203 sont respectivement égaux aux diamètres d207, d206 et d205, l'évidement 204 étant centré sur le plan A. Le diamètre d201 à d207 de chaque évidement 201 à 207 est inférieur à la largeur du tronçon de l'âme 2 où cet évidement 201 à 207 se trouve.Moreover, each core 2 has seven disjointed recesses 201 to 207 which are distributed along its central part. The recesses 201 to 207 are arranged at the same location for each core 2 and extend successively next to each other, along the axis X. The recesses 201 to 207 are circular and d201 d207 are noted their respective diameters . The recesses 201 to 207 of each core 2 are symmetrical with respect to the plane A. Thus, the diameters d201, d202 and d203 are respectively equal to the diameters d207, d206 and d205, the recess 204 being centered on the plane A. The diameter d201 to d207 of each recess 201 to 207 is less than the width of the section of the core 2 where the recess 201 to 207 is.

Les évidements 201 des différentes âmes 2 sont alignés le long d'un même axe Z201 parallèle à l'axe Z. De la même manière, les évidements 202 à 207 des âmes 2 sont alignés entre eux le long d'un même axe, non représenté, parallèle à l'axe Z.The recesses 201 of the different cores 2 are aligned along the same axis Z201 parallel to the axis Z. In the same way, the recesses 202 to 207 of the cores 2 are aligned with each other along the same axis, no represented, parallel to the Z axis.

La porte d'écluse 100 comprend par ailleurs quatre raidisseurs 401 à 404 en forme de cylindre creux à base circulaire, qui s'étendent parallèlement à l'axe Z. Les raidisseurs 401 et 404 sont plus proches des montants 61 et 62 que les raidisseurs 402 et 403. Le long de l'axe X, les raidisseurs 402 et 403 sont situés entre les raidisseurs 401 et 404. Autrement dit, les raidisseurs 402 et 403 sont des raidisseurs centraux situés entre les raidisseurs latéraux 401 et 404.The lock gate 100 also comprises four stiffeners 401 to 404 in the form of a hollow cylinder with a circular base, which extend parallel to the axis Z. The stiffeners 401 and 404 are closer to the uprights 61 and 62 than the stiffeners. 402 and 403. Along the axis X, the stiffeners 402 and 403 are located between the stiffeners 401 and 404. In other words, the stiffeners 402 and 403 are central stiffeners located between the lateral stiffeners 401 and 404.

Les raidisseurs 401 à 404 sont coaxiaux respectivement avec les évidements 201, 203, 205 et 207. Ainsi, le raidisseur 401 est aligné selon l'axe Z201 avec les évidements 201 des différentes âmes 2. Autrement dit, un axe central longitudinal Z401 du raidisseur 401 est aligné avec l'axe Z201 des évidements 201. De la même manière, les raidisseurs 402 à 404 sont respectivement alignés parallèlement à l'axe Z avec les évidements 203, 205 et 207. Les évidements 202, 204 et 206 sont situés chacun entre deux raidisseurs 401 à 404 adjacents.The stiffeners 401 to 404 are coaxial respectively with the recesses 201, 203, 205 and 207. Thus, the stiffener 401 is aligned along the axis Z201 with the recesses 201 of the different cores 2. In other words, a longitudinal central axis Z401 of the stiffener 401 is aligned with the axis Z201 of the recesses 201. In the same way, the stiffeners 402 to 404 are respectively aligned parallel to the Z axis with the recesses 203, 205 and 207. The recesses 202, 204 and 206 are located each between two stiffeners 401 to 404 adjacent.

Dans le plan d'une âme 2, les raidisseurs centraux 402 et 403 présentent un diamètre D42 supérieur au diamètre D41 des raidisseurs latéraux 401 et 404. Les raidisseurs 401 et 404 ont un diamètre D41 supérieur au diamètre d201 et d207 des évidements 201 et 207. Les raidisseurs 402 et 403 ont un diamètre D42 supérieur au diamètre d203 et d205 des évidements 203 et 205.In the plane of a web 2, the central stiffeners 402 and 403 have a diameter D42 greater than the diameter D41 of the lateral stiffeners 401 and 404. The stiffeners 401 and 404 have a diameter D41 greater than the diameter d201 and d207 of the recesses 201 and 207 The stiffeners 402 and 403 have a diameter D42 greater than the diameter d203 and d205 of the recesses 203 and 205.

Ainsi, comme le montre la figure 2, pour chaque âme 2, une partie annulaire 24 s'étend autour de chaque évidement 201, 203, 205 et 207, entre l'évidement et la paroi latérale du raidisseur 401 à 404 correspondant.So, as shown in figure 2 for each core 2, an annular portion 24 extends around each recess 201, 203, 205 and 207 between the recess and the side wall of the corresponding stiffener 401 to 404.

Les parties annulaires 24 ont un diamètre interne correspondant aux diamètres respectifs d201, d203, d205 et d207 des évidements 201, 203, 205 et 207, et un diamètre externe correspondant au diamètre D41 et D42 des raidisseurs 401 à 404. Ainsi, les parties annulaires 24 délimitées par les raidisseurs 402 et 403 présentent un diamètre externe plus important que le diamètre externe des parties annulaires 24 délimitées par les raidisseurs 401 et 404.The annular portions 24 have an internal diameter corresponding to the respective diameters d201, d203, d205 and d207 of the recesses 201, 203, 205 and 207, and an external diameter corresponding to the diameter D41 and D42 of the stiffeners 401 to 404. Thus, the annular parts 24 delimited by the stiffeners 402 and 403 have an outer diameter greater than the outer diameter of the annular portions 24 defined by the stiffeners 401 and 404.

Les évidements 202, 204, 206 et les raidisseurs 401 à 404 délimitent ensemble une première bande 21 longeant le bord rectiligne B1 au voisinage de la tôle de bordé 1, une deuxième bande 22 longeant le bord B2 ainsi que des ponts 23 reliant entre elles les bandes 21 et 22 et s'étendant perpendiculairement au bord B1 entre deux évidements 201 à 207 voisins. Sur la figure 3, les bandes 21 et 22 sont matérialisées par des traits pointillés globalement parallèles à chaque bord longitudinal B1 et B2 de l'âme 2. Les âmes 2 sont donc de type « bow-string ».The recesses 202, 204, 206 and the stiffeners 401 to 404 together define a first strip 21 along the straight edge B1 in the vicinity of the plating sheet 1, a second strip 22 along the edge B2 and bridges 23 interconnecting the strips 21 and 22 and extending perpendicular to the edge B1 between two recesses 201 to 207 neighbors. On the figure 3 the strips 21 and 22 are represented by dashed lines generally parallel to each longitudinal edge B1 and B2 of the core 2. The cores 2 are therefore of the "bow-string" type.

La forme circulaire des extrémités amont et aval de chaque pont 23 permet une répartition progressive des contraintes entre les bandes 21 et 22 et les ponts 23. Les évidements 201 à 207 pourraient présenter d'autres formes, pourvu qu'ils délimitent des régions analogues aux bandes 21, 22 et aux ponts 23.The circular shape of the upstream and downstream ends of each bridge 23 allows a progressive distribution of the stresses between the strips 21 and 22 and the bridges 23. The recesses 201 to 207 could have other shapes, provided that they delimit regions similar to the strips 21, 22 and bridges 23.

Lorsque le liquide exerce une pression P répartie sur la tôle de bordé 1, chaque bande 21 travaille en traction, car elle est soumise à des contraintes orientées selon la direction longitudinale X de l'âme 2. Ainsi, les bandes 21 ne peuvent pas se voiler, c'est-à-dire se déformer hors d'un plan horizontal parallèle au plan X-Y.When the liquid exerts a pressure P distributed on the plating sheet 1, each band 21 works in traction, because it is subjected to stresses oriented in the longitudinal direction X of the core 2. Thus, the strips 21 can not be reached. to veil, that is to say to deform out of a horizontal plane parallel to the plane XY.

Les bandes 22 travaillent quant à elles en compression, mais elles sont rigidifiées par les semelles 301 à 314 qui leur sont soudées perpendiculairement. Les bandes 22 présentent donc un risque faible, voire nul, de voilement selon l'axe Z. En effet, les semelles 301 à 314 constituent avec les bandes 21 des éléments à section en « T » présentant un moment d'inertie relativement important par rapport aux axes Y et Z.The strips 22 work in their compression, but they are stiffened by the soles 301 to 314 which are welded perpendicularly. The strips 22 thus have a low risk, or even zero, of buckling along the Z axis. In fact, the soles 301 to 314 constitute with the strips 21 elements with a "T" section presenting a relatively high moment of inertia. relative to the Y and Z axes.

La largeur ℓ22 d'une bande 22, prise parallèlement à l'axe Y, c'est-à-dire perpendiculairement à la verticale et à la longueur L de l'âme 2, est inférieure à vingt fois, et de préférence à quinze fois, l'épaisseur de l'âme 2. Un tel dimensionnement permet de réduire davantage le risque de voilement des bandes 22 en service.The width ℓ22 of a strip 22, taken parallel to the Y axis, that is to say perpendicular to the vertical and the length L of the core 2, is less than twenty times, and preferably fifteen times the thickness of the core 2. Such a dimensioning further reduces the risk of buckling of the bands 22 in use.

De préférence, la largeur des parties annulaires 24, mesurée radialement entre chaque évidements 201, 203, 204 et 207 et le raidisseur 401 à 404 correspondant, est inférieure à la largeur ℓ22.Preferably, the width of the annular portions 24, measured radially between each recesses 201, 203, 204 and 207 and the corresponding stiffener 401 to 404, is less than the width ℓ22.

Les ponts 23 travaillent en traction, c'est-à-dire qu'ils transmettent des efforts transversaux aux bandes 21 et 22. Les ponts 23 présentent donc aussi un risque de voilement faible, voire nul.The bridges 23 work in traction, that is to say that they transmit transverse forces to the strips 21 and 22. The bridges 23 therefore also have a low risk of buckling or zero.

La tôle de bordé 1, les âmes 2, les montants 61 et 62 et les semelles 301 à 314 sont constitués dans au moins un métal présentant de bonnes propriétés mécaniques et une bonne soudabilité, tel que l'acier de construction de nuance S355J2.The plating sheet 1, the cores 2, the uprights 61 and 62 and the flanges 301 to 314 consist of at least one metal having good mechanical properties and good weldability, such as the grade S355J2 structural steel.

Chaque raidisseur 401 à 404 est multipartite, c'est-à-dire qu'il est constitué de plusieurs éléments tubulaires alignés selon son axe longitudinal, parallèlement à l'axe Z. Ainsi, les éléments tubulaires ne traversent pas les âmes 2 mais sont soudés de part et d'autre des âmes 2, autour des parties annulaires 24.Each stiffener 401 to 404 is multipartite, that is to say that it consists of several tubular elements aligned along its longitudinal axis, parallel to the axis Z. Thus, the tubular elements do not pass through the cores 2 but are welded on both sides of the cores 2, around the annular portions 24.

Comme le montre la figure 4, le raidisseur 403 comprend vingt éléments tubulaires 431 à 450 agencés successivement les uns au dessus des autres entre les extrémités 11 et 12 de la porte 100. Ainsi, l'élément tubulaire 431 s'étend au niveau de l'extrémité inférieure 11 de la porte d'écluse 100 et l'élément tubulaire 450 s'étend au niveau de l'extrémité supérieure 450 de la porte d'écluse 100.As shown in figure 4 , the stiffener 403 comprises twenty tubular elements 431 to 450 successively arranged one above the other between the ends 11 and 12 of the door 100. Thus, the tubular element 431 extends at the lower end 11 of the lock gate 100 and the tubular member 450 extends at the upper end 450 of the lock gate 100.

De la même manière, les raidisseurs 401, 402 et 404 comprennent également vingt éléments tubulaires agencés successivement les uns au dessus des autres.In the same way, the stiffeners 401, 402 and 404 also comprise twenty tubular elements successively arranged one above the other.

Quatre éléments tubulaires 431 à 434, 435 à 438 et 439 à 441 s'étendent au niveau de chacune des trois parties inférieures 101 à 103 de la porte d'écluse 100. Trois éléments tubulaires 442 à 444, 445 à 447 et 448 à 450 s'étendent au niveau de chacune des trois parties supérieures 104 à 106.Four tubular members 431 to 434, 435 to 438 and 439 to 441 extend at each of the three lower portions 101 to 103 of the lock gate 100. Three tubular members 442 to 444, 445 to 447 and 448 to 450 extend at each of the three upper portions 104 to 106.

Concernant la partie inférieure 101, l'élément tubulaire 431 s'étend longitudinalement entre l'extrémité inférieure 11 de la porte 100 et l'âme 2 qui est située en bas à la figure 4 et solidarisé à la semelle 301. L'élément tubulaire 431 peut par exemple être soudé sur la face inférieure 25 de cette âme 2 au moyen d'une ligne de soudure L5 s'étendant sur toute la périphérie interne de l'élément tubulaire 431, ou sur une partie substantielle de cette périphérie.With regard to the lower part 101, the tubular element 431 extends longitudinally between the lower end 11 of the door 100 and the core 2 which is situated at the bottom of the door. figure 4 and secured to the sole 301. The tubular element 431 may for example be welded to the lower face 25 of this core 2 by means of a weld line L5 extending over the entire inner periphery of the tubular element 431, or on a substantial part of this periphery.

L'élément tubulaire 432 s'étend entre la face supérieure 26 de l'âme 2 solidarisée à la semelle 301 et la face inférieure 25 de l'âme 2 solidarisée à la semelle 302. L'élément tubulaire 432 peut par exemple être soudé sur les faces 25 et 26 des âmes 2 correspondantes au moyen de lignes de soudure non représentées s'étendant sur la périphérie interne de l'élément tubulaire 432. De la même manière, l'élément tubulaire 433 s'étend entre l'âme 2 solidarisée à la semelle 302 et l'âme 2 solidarisée à la semelle 303.The tubular element 432 extends between the upper face 26 of the core 2 secured to the sole 301 and the lower face 25 of the core 2 secured to the sole 302. The tubular element 432 may for example be welded to the faces 25 and 26 of the cores 2 corresponding by means of unrepresented weld lines extending over the inner periphery of the tubular element 432. In the same way, the tubular element 433 extends between the core 2 secured to the sole 302 and the core 2 secured to the sole 303.

Deux éléments tubulaires 434 et 435 s'étendent entre l'âme 2 solidarisée à la semelle 303 et l'âme 2 solidarisée à la semelle 304. Ainsi, l'extrémité supérieure de l'élément tubulaire 434 est assemblée, par exemple par soudage ou au moyen de boulons, à l'extrémité inférieure de l'élément tubulaire 435.Two tubular elements 434 and 435 extend between the core 2 secured to the sole 303 and the core 2 secured to the sole 304. Thus, the upper end of the tubular element 434 is assembled, for example by welding or by bolts at the lower end of the tubular member 435.

Pour les parties 102 à 106, les éléments tubulaires 435 à 450 sont assemblés aux faces 25 et 26 des âmes 2 de manière analogue à la partie 101.For the parts 102 to 106, the tubular elements 435 to 450 are assembled to the faces 25 and 26 of the cores 2 in a similar way to the part 101.

Ainsi, chaque élément 431 à 450 est solidarisé à une face 25 ou 26 d'au moins une âme 2, autour de l'un des évidements 201, 203, 205 et 207. En d'autres termes, chaque élément 431 à 450 est solidarisé à une face 25 ou 26 d'au moins une âme 2, autour de chacun des évidements 201, 203, 205 ou 207 au droit desquels est monté cet élément 431 à 450, c'est-à-dire à la verticale ou à l'aplomb des évidements 201, 203, 204 ou 207, le long de l'axe longitudinal Z401 du raidisseur 401 à 404 résultant de l'assemblage de cet élément 431 à 450.Thus, each element 431 to 450 is secured to a face 25 or 26 of at least one core 2, around one of the recesses 201, 203, 205 and 207. In other words, each element 431 to 450 is secured to a face 25 or 26 of at least one core 2, around each of the recesses 201, 203, 205 or 207 to the right of which is mounted this element 431 to 450, that is to say the vertical or the plumb with the recesses 201, 203, 204 or 207, along the longitudinal axis Z401 of the stiffener 401 to 404 resulting from the assembly of this element 431 to 450.

Les éléments 434, 435, 438, 439, 441, 442, 444, 445, 447, 448 de chaque raidisseur 401 à 404 sont situés au niveau des interfaces entre deux parties 101 à 106 adjacentes et sont solidarisés directement les uns aux autres.The elements 434, 435, 438, 439, 441, 442, 444, 445, 447, 448 of each stiffener 401 to 404 are located at the interfaces between two adjacent portions 101 to 106 and are directly connected to each other.

Ainsi, il est possible de fabriquer chacune des parties 101 à 106 séparément, puis d'assembler les parties 101 à 106 entre elles, par exemple sur le site d'utilisation de la porte d'écluse 100.Thus, it is possible to manufacture each of the parts 101 to 106 separately, then to assemble the parts 101 to 106 between them, for example at the site of use of the lock gate 100.

Les parties 101 à 106 sont composées chacune d'une partie de la tôle de bordé 1, d'une partie des montants 61 et 62, de plusieurs âmes 2 et des semelles 301 à 314 solidarisées à ces âmes 2. En outre, chaque partie 101 à 106 comprend plusieurs éléments tubulaires 431 à 450.The parts 101 to 106 are each composed of a portion of the plating sheet 1, a portion of the uprights 61 and 62, several souls 2 and soles 301 to 314 secured to these souls 2. In addition, each part 101 to 106 comprises several tubular elements 431 to 450.

Les éléments tubulaires 448, 449 et 450 du raidisseur 401 sont situés au niveau de la partie supérieure 106 et sont reliés à la tôle de bordé par une plaque en tôle 501. De la même manière, les éléments tubulaires des raidisseurs 402, 403 et 404 qui sont situés au niveau de la partie 106 sont reliés à la tôle de bordé par une plaque en tôle 502, 503 ou 504.The tubular elements 448, 449 and 450 of the stiffener 401 are located at the upper part 106 and are connected to the sheet of plating by a sheet metal plate 501. In the same way, the tubular elements of the stiffeners 402, 403 and 404 which are situated at the level of the part 106 are connected to the sheet of plating by a sheet metal plate 502, 503 or 504.

Les plaques 501 à 504 sont multipartites et sont composés de plusieurs éléments qui s'étendent parallèlement à l'axe Z entre les âmes 2. Chaque élément constituant les plaques 501 à 504 est soudé, d'une part, aux éléments tubulaires 448, 449, 450 et équivalents des raidisseurs 401 à 404 et, d'autre part, aux âmes 2 correspondantes.The plates 501 to 504 are multipartite and consist of several elements which extend parallel to the Z axis between the cores 2. Each element constituting the plates 501 to 504 is welded, on the one hand, to the tubular elements 448, 449 , 450 and equivalent of the stiffeners 401 to 404 and, on the other hand, to the cores 2 corresponding.

Ainsi, les raidisseurs 401 à 404 sont solidarisés à la tôle de bordé 1, ce qui bloque en particulier la translation verticale, selon l'axe Z, des raidisseurs 401 à 404 par rapport à la tôle de bordé 1. Ceci contribue à accroitre la résistance mécanique de la porte d'écluse 100, en particulier la résistance au flambement des semelles 301 à 314.Thus, the stiffeners 401 to 404 are secured to the plating sheet 1, which blocks in particular the vertical translation along the Z axis of the stiffeners 401 to 404 relative to the plating sheet 1. This contributes to increasing the mechanical strength of the sluice gate 100, in particular the buckling resistance of the flanges 301 to 314.

Les raidisseurs 401 à 404 étant solidarisés aux âmes 2, ils reprennent une partie des efforts s'exerçant sur les âmes 2 selon l'axe Z. Les raidisseurs 401 à 404 augmentent la rigidité verticale de l'ensemble de la porte d'écluse 100 et sa résistance mécanique à la pression P. Les raidisseurs 401 à 404 peuvent chacun relier toutes les âmes 2 ou seulement une partie d'entre elles, selon les besoins de l'application visée. En variante, les raidisseurs 401 à 404 peuvent être pleins. On peut aussi, si besoin, disposer d'autres éléments tubulaires à travers les évidements 202, 204 et 206 voisins des évidements 201, 203, 205 et 207. Par ailleurs, les raidisseurs 401 à 404 peuvent être constitués d'élément tubulaires à section non circulaire, mais, par exemple, elliptique ou polygonale.The stiffeners 401 to 404 being secured to the cores 2, they take part of the forces exerted on the cores 2 along the Z axis. The stiffeners 401 to 404 increase the vertical rigidity of the entire lock gate 100 and its mechanical resistance to the pressure P. The stiffeners 401 to 404 can each connect all the souls 2 or only a part of them, according to the needs of the intended application. Alternatively, the stiffeners 401 to 404 may be full. It is also possible, if necessary, to have other tubular elements through the recesses 202, 204 and 206 adjacent to the recesses 201, 203, 205 and 207. Furthermore, the stiffeners 401 to 404 may consist of sectional tubular elements. not circular, but, for example, elliptical or polygonal.

Par conséquent, la structure de type « bow-string » des âmes 2, rigidifiée par les raidisseurs 401 à 404, permet à la porte d'écluse 100 de supporter les contraintes engendrées par la pression P du liquide sur la tôle de bordé 1 et sur les semelles 301 à 314, sans risque substantiel de voilement.Consequently, the "bow-string" type structure of the webs 2, stiffened by the stiffeners 401 to 404, allows the sluice gate 100 to withstand the stresses generated by the pressure P of the liquid on the plating sheet 1 and on the soles 301 to 314, without substantial risk of buckling.

Comme les raidisseurs 401 à 404 sont creux et comme les âmes 2 présentent des évidements 202, 204 et 206 libres, l'eau peut facilement remonter sur la hauteur de la porte d'écluse 100, ce qui évite les différences momentanées de contraintes entre régions voisines et améliore la résistance mécanique de la porte d'écluse 100.As the stiffeners 401 to 404 are hollow and as the webs 2 have recesses 202, 204 and 206 free, the water can easily go up on the height of the lock gate 100, which avoids the momentary differences in constraints between regions and improves the mechanical strength of the lock gate 100.

Comme visible à la figure 4, on note h300, une hauteur des semelles 301 à 341, mesurée le long de l'axe Z. La hauteur h300 correspond à la largeur de la bande de tôle qui constitue les semelles 301 à 314. Les semelles 301 à 341 ont une hauteur h300 décroissante vers le haut. Autrement dit, la hauteur h300 de la semelle 301 est plus importante que la hauteur h300 de la semelle 314. De la même manière, la section des semelles 301 à 314 est décroissante vers le haut. De plus, les âmes 2 situées en bas de la porte d'écluse 100 sont plus proches les unes des autres que les âmes 2 situées en haut de la porte d'écluse 100. Enfin, la hauteur des parties 101 à 106, selon l'axe Z, décroit entre les extrémités 11 et 12 de la porte 100. Ceci est à mettre en relation avec le fait que les efforts encaissés par la porte d'écluse 100, au niveau de son extrémité inférieure 11, sont plus importants qu'au niveau de son extrémité supérieure 12, étant donné que l'eau retenue par la porte d'écluse 100 exerce une pression P qui augmente en allant vers le bas selon l'axe Z entre les extrémités 12 et 11.As visible at figure 4 h300 is a height of the flanges 301 to 341, measured along the axis Z. The height h300 corresponds to the width of the sheet metal strip which constitutes the soles 301 to 314. The soles 301 to 341 have a height h300 decreasing upwards. In other words, the height h300 of the sole 301 is larger than the height h300 of the sole 314. In the same way, the section of the soles 301 to 314 is decreasing upwards. In addition, the webs 2 located at the bottom of the lock gate 100 are closer to one another than the webs 2 located at the top of the lock gate 100. Finally, the height of the parts 101 to 106, according to the Z axis, decreases between the ends 11 and 12 of the door 100. This is related to the fact that the forces entered by the lock gate 100, at its lower end 11, are larger than the at its upper end 12, since the water retained by the sluice gate 100 exerts a pressure P which increases downward along the Z axis between the ends 12 and 11.

Une telle porte d'écluse nécessite moins de soudures que les portes de l'art antérieur, ce qui permet de diminuer la masse de la porte d'écluse 100. Ainsi, il est possible de diminuer l'épaisseur des éléments en tôle qui constituent la porte d'écluse 100. De plus, ces soudures s'étendent essentiellement selon les mêmes directions que les contraintes principales subies par la porte, ce qui augmente leur résistance et celle de la porte d'écluse, notamment à la fatigue. En effet, dans la porte d'écluse 100 de l'invention, les soudures les plus touchées par le phénomène de fatigue sont supprimées. Grâce à la porte d'écluse 100 de l'invention, il n'est pas nécessaire de réaliser les évidements 201, 203, 205 et 207 avec des tolérances géométriques précises, car les éléments tubulaires 431 à 450 et équivalents ne traversent pas les évidements mais sont soudés aux âmes 2, à proximité et autour des évidements. Ainsi, la fabrication de la porte d'écluse 100 de l'invention est relativement aisée. En effet, si les éléments tubulaires 431 à 350 et équivalents traversaient les évidements 201, 203, 205 et 207, il serait nécessaire d'avoir un ajustement précis des éléments tubulaires et des évidements, de manière à assurer un contact satisfaisant entre ces éléments, dans le but d'assurer la solidité des soudures. Concernant la porte d'écluse 100 de l'invention, il suffit que la hauteur des éléments tubulaires soit égale à l'espacement entre deux âmes adjacentes pour assurer la qualité des soudures, ce qui est plus facile à réaliser.Such a sluice gate requires fewer welds than the doors of the prior art, which makes it possible to reduce the weight of the sluice gate 100. Thus, it is It is possible to reduce the thickness of the sheet metal elements that constitute the lock gate 100. Moreover, these welds extend essentially in the same directions as the main stresses to the door, which increases their strength and that of the door. lock gate, especially to fatigue. Indeed, in the lock gate 100 of the invention, the welds most affected by the phenomenon of fatigue are removed. Thanks to the lock gate 100 of the invention, it is not necessary to make the recesses 201, 203, 205 and 207 with precise geometrical tolerances, because the tubular elements 431 to 450 and the like do not pass through the recesses. but are welded to souls 2, near and around the recesses. Thus, the manufacture of the lock gate 100 of the invention is relatively easy. Indeed, if the tubular elements 431 to 350 and equivalents traversed the recesses 201, 203, 205 and 207, it would be necessary to have a precise adjustment of the tubular elements and the recesses, so as to ensure a satisfactory contact between these elements, in order to ensure the strength of the welds. With regard to the lock gate 100 of the invention, it is sufficient that the height of the tubular elements is equal to the spacing between two adjacent cores to ensure the quality of the welds, which is easier to achieve.

D'autre part, les parties annulaires 24 constituent de la matière supplémentaire qui reprend les efforts encaissés par la porte d'écluse 100 et contribue à assurer sa résistance mécanique. De plus, la solidité des soudures L5 reliant les éléments tubulaires 431 à 450 et équivalents des raidisseurs 401 à 404 avec les faces 25 et 26 des âmes 2 est relativement élevée.On the other hand, the annular portions 24 constitute additional material which takes the efforts cashed by the lock gate 100 and contributes to ensure its mechanical strength. In addition, the strength of the welds L5 connecting the tubular elements 431 to 450 and equivalents of the stiffeners 401 to 404 with the faces 25 and 26 of the cores 2 is relatively high.

Par ailleurs, la porte d'écluse 100 ainsi formée se trouve sensiblement allégée, d'une part, grâce aux évidements 201 à 207 et à la faible épaisseur des âmes 2 et, d'autre part, grâce à la réduction du nombre de soudures nécessaires. Une telle porte 100 présente, à masse égale, une résistance mécanique en fatigue et en flexion supérieure à celles des portes antérieures.Furthermore, the lock gate 100 thus formed is substantially lightened, on the one hand, thanks to the recesses 201 to 207 and to the small thickness of the cores 2 and, on the other hand, thanks to the reduction in the number of welds required. Such a door 100 has, at equal mass, mechanical strength in fatigue and flexion greater than those of the front doors.

En variante, les évidements 201 à 207 peuvent ne pas être circulaires, et dans ce cas le diamètre d200 correspond à une dimension maximale des évidements, mesurée dans le plan d'une âme 2.Alternatively, the recesses 201 to 207 may not be circular, and in this case the diameter d200 corresponds to a maximum dimension of the recesses, measured in the plane of a core 2.

En variante, les raidisseurs 401 à 404 ne sont pas cylindriques à base circulaire. Dans ce cas, les diamètres D41 et D42 correspondent à une dimension maximale des raidisseurs, mesurée dans le plan d'une âme 2.As a variant, the stiffeners 401 to 404 are not cylindrical with a circular base. In this case, the diameters D41 and D42 correspond to a maximum dimension of the stiffeners, measured in the plane of a core 2.

Claims (10)

  1. Sluice gate (100), intended to withstand a pressure (P) exerted by a liquid, the sluice gate (100) comprising a generally flat shell plate (1), a plurality of thin webs (2) extending along the shell plate (1) and substantially parallel to one another, each web (2) being secured to the shell plate (1), each web (2) being pierced with a plurality of separate cutouts (201-207), characterized in that the sluice gate (100) comprises at least one stiffener (401-404) resulting from the assembly of a plurality of elements (431-450) which are aligned along a longitudinal axis (Z401) of the stiffener (401-404) and which each extend between the webs (2), without passing through the webs (2), and in that each element (431-450) is secured to a face (25, 26) of at least one web (2), around one of the cutouts (201-207) coaxial with the stiffener (401-404).
  2. Sluice gate (100) according to Claim 1, characterized in that, for each web (2) and in the plane of a web (2), the cutouts (201-207) have a maximum dimension (d200) which is less than a maximum dimension (D41, D42) of the stiffener (401-404), and in that, for each element (431-450), an annular part (24) of the web (2) extends between this element (431-450) and the cutout (201, 203, 205, 207) around which this element (431-450) extends.
  3. Sluice gate (100) according to either of the preceding claims, characterized in that each stiffener (401-404) is cylindrical with a circular cross section, and in that the elements (431-450) of the stiffener (401-404) are tubular.
  4. Sluice gate (100) according to one of the preceding claims, characterized in that it comprises flanges (301-314) each secured to a single web (2), by means of weld lines (L3, L4) extending over a substantial part of the respective curved edges (B2) of the webs (2).
  5. Sluice gate (100) according to Claim 4, characterized in that the assembly consisting of a web (2) and the flange (301-314) secured to this web (2) forms a beam whose cross section is "T"-shaped.
  6. Sluice gate (100) according to one of the preceding claims, characterized in that it is manufactured by assembling together a plurality of parts (101-106) each composed of a part of the shell plate (1), of a plurality of webs (2) and of a plurality of elements (431-450) of each stiffener (401-404).
  7. Sluice gate (100) according to Claim 6, characterized in that the elements (434, 435, 438, 439, 441, 442, 444, 445, 447, 448) of the stiffener (401-404) which are situated at the interfaces between two adjacent parts (101-106) are secured directly to one another, in particular by welding or by means of bolts.
  8. Sluice gate (100) according to one of the preceding claims, characterized in that it comprises a plurality of stiffeners (401-404).
  9. Sluice gate (100) according to Claim 8, characterized in that each web (2) comprises a cutout (202, 204, 206, 208) formed between two adjacent stiffeners (401-404), this cutout not being surrounded by a stiffener (401-404).
  10. Sluice gate (100) according to either of Claims 8 and 9, characterized in that it comprises at least three stiffeners (401-404), in that the stiffeners (401-404) include at least one central stiffener (402, 403) and two lateral stiffeners (401, 404) which are situated between the central stiffener (402, 403) and a lateral upright (61, 62) of the sluice gate (100), and in that, in the plane of a web (2), each central stiffener (402, 403) has a maximum dimension (D42) which is greater than a maximum dimension (D41) of the lateral stiffeners (401, 404).
EP12723624.8A 2011-04-26 2012-04-25 Sluice gate Active EP2702208B1 (en)

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PL12723624T PL2702208T3 (en) 2011-04-26 2012-04-25 Sluice gate
SI201230206T SI2702208T1 (en) 2011-04-26 2012-04-25 Sluice gate
HRP20150534TT HRP20150534T1 (en) 2011-04-26 2015-05-19 Sluice gate

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FR1153565A FR2974584B1 (en) 2011-04-26 2011-04-26 ECLUSE DOOR
PCT/EP2012/057513 WO2012146595A2 (en) 2011-04-26 2012-04-25 Water-gate

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EP2702208B1 true EP2702208B1 (en) 2015-03-04

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HR (1) HRP20150534T1 (en)
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CA2833818A1 (en) 2012-11-01
RS54019B1 (en) 2015-10-30
US20140050529A1 (en) 2014-02-20
PT2702208E (en) 2015-06-09
RU2556052C2 (en) 2015-07-10
FR2974584B1 (en) 2013-06-14
CN103534414A (en) 2014-01-22
CA2833818C (en) 2015-06-23
CN103534414B (en) 2015-05-13
WO2012146595A2 (en) 2012-11-01
SI2702208T1 (en) 2015-07-31
US9085867B2 (en) 2015-07-21
WO2012146595A3 (en) 2013-01-10
HRP20150534T1 (en) 2015-07-03
EP2702208A2 (en) 2014-03-05
FR2974584A1 (en) 2012-11-02
RU2013152321A (en) 2015-06-10

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