EP0918907B1 - Palplanche en forme de "u" a faible resistance d'enfoncement - Google Patents
Palplanche en forme de "u" a faible resistance d'enfoncement Download PDFInfo
- Publication number
- EP0918907B1 EP0918907B1 EP97933694A EP97933694A EP0918907B1 EP 0918907 B1 EP0918907 B1 EP 0918907B1 EP 97933694 A EP97933694 A EP 97933694A EP 97933694 A EP97933694 A EP 97933694A EP 0918907 B1 EP0918907 B1 EP 0918907B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet pile
- flange
- corners
- equal
- pile according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
Definitions
- the present invention relates to a low "U" shaped sheet pile sinking resistance.
- a "U” shaped sheet pile has a flat back (called the wing of the sheet pile) to which two legs are connected (called souls of the sheet pile) carrying interlocking locks, so that the sheet pile has a plane of symmetry perpendicular to the back.
- these "U” shaped sheet piles are joined to using interlocking locks, with their back alternately located on either side of the plane passing through the central axes of the locks latching. This plane then forms the neutral plane in bending of the curtain "U" shaped sheet piles.
- Patent FR-A-434497 corresponding to the patent US-A-1012124, we know special sheet piles having an arched wing, as well as two curved side members of very low height, which are connected to the arched wing and which each carry an interlock.
- These fairly massive sheet piles are supposed to work in traction and replace flat sheet piles to allow the construction of walls including the total wall thickness in the middle of the wing is not greater than the thickness two locks engaged. They cannot therefore be assimilated to "U" shaped sheet piles which are the subject of this invention. The latter indeed have far greater depths for be able to work in flexion.
- the arched wing has a extra material at the two connections to the lateral members to present a substantially flat outer face over its entire width.
- this extra material which is located on the outside of the arched wing, significantly increases the moment of inertia and the resistance modulus of the sheet pile, that it considerably strengthens the section of the sheet pile and that it opposes a deformation of the arched wing under pressure.
- the main merit of the present invention is to have discovered that you can reduce the resistance to driving in a sheet pile "U" shape of section given by an addition of material at the corners concave.
- the local excess thicknesses at concave corners are used primarily to flatten the concave corners to the location of the wing / core connection, i.e. making these concave corners less closed.
- this flattening of the concave corners facilitates the flow of soil particles outside the corners. This avoids significant compaction of the soil in the concave corners, which reduces the resistance to sinking of the pile. It will be noted that the effect obtained is particularly marked in sandy soils.
- Cylindrical connecting surfaces substantially tangent to the faces of the wing and the respective core in said concave corners, seem to give the best results in terms of reducing resistance to driving the sheet pile.
- this conclusion does not exclude to use any curved surfaces, tangent or not to the faces of the wing and the respective core, or even polygonal surfaces or a simple flat surface to define the joining surfaces in said corners concave, provided of course that the concave corners thus formed are sufficiently flat to facilitate the flow of soil particles outside of these.
- Threshing tests in a standard sand bed have shown that we start to get a really significant reduction in the energy of threshing with a cylindrical connection surface with a radius equal to 75 mm which is tangent to the faces of the wing and the respective web in the concave corners. From this result, we can generally deduce that, to obtain a significant reduction in threshing time, the said additional thickness must be such that the concave corners at the location of the wing / core connections are at least as open than a tangential cylindrical connection with a radius of 75 mm.
- said local allowance must be at less sufficient than a fictitious cylindrical surface, which has a radius at less equal to 75 mm and which is tangent to the two planes which would have formed the respective concave wing / core connection corner in the absence of said additional thickness, is located completely inside said allowance between the two tangency generators.
- the convex corners at the location of the wing / core connections are preferably only slightly rounded (rounding radius ⁇ 25 mm), so as to give the profile a moment of inertia as high as possible by concentration of a maximum of matter in the outer part of the souls.
- the sheet pile according to the invention is advantageously a steel sheet pile obtained by hot rolling.
- Figure 1 shows a cross section of half a sheet pile in the shape of a "U" according to the invention.
- the other half is exactly symmetrical to the half shown, with respect to the plane of symmetry identified by reference 8.
- This sheet pile has a substantially planar wing 10 perpendicular to the plane of symmetry 8 of the section.
- To this wing 10 are connected two souls 12 substantially flat, of which only the left core is represented on the Figure 1.
- Each of these cores 12 carries a lock 14 which makes it possible to form a more or less tight seal by engagement with a lock corresponding from another sheet pile.
- the central axis of lock 14, which is perpendicular to the drawing plane, is identified by the reference 15. It will again noted that wing 10 is generally noticeably thicker than souls 12.
- the acute angle ⁇ formed between the cores and a plane parallel to the wing is about 74 °. It goes without saying that this angle can naturally be chosen smaller or larger.
- the acute angle ⁇ will normally be between 40 ° and 80 °.
- the convex corners 16 connect the outer planar faces 20 of the cores 12 to the outer flat face 22 of the wing 10 (see also Figure 2). These corners convex 16 have a rounded, whose radius "r” is determined by rolling constraints and / or safety considerations (avoid sharp edges). Normally “r” will be larger than 10 mm and smaller than 25 mm. The smaller “r”, the higher the modulus of flexural strength of the profile.
- the concave corners 18 are substantially flattened by a local excess thickness of the sheet pile at these locations.
- This modification of the known U-shaped sheet pile will be studied in more detail using the Figure 2.
- the concave wing / core corner of a sheet pile classic is shown in dashed lines (see the lines marked with the reference number 24 in Figure 2).
- this concave corner 24 has a rounding whose radius is determined by rolling constraints and corresponds approximately to the radius "r" of the convex corner 16.
- the local allowance which made it possible to flatten the classic concave corner 24 and to therefore make this corner more open, is represented in the same figure by the hatched surface 26.
- This extra thickness 26 defines a surface of concave fitting 30. Remain to note that the symmetrical concave corner has naturally the same aspect.
- the surface concave fitting 30 is a cylindrical fitting surface which is tangent to the inner flat face of the wing 10 and to the inner flat face 34 of the core 12.
- Arrows 36 in Figure 2 show how soil particles can flow freely along the cylindrical connection surface 30 thus avoiding the formation of a strongly compacted nucleus in the concave corner 18 which opposes the driving of the sheet pile in the shape of a "U".
- Threshing tests in a standard sand bed have shown start to get a significant reduction in threshing energy with a cylindrical connection surface with a radius equal to 75 mm which is tangent to the faces of the wing and the respective web in the concave corners to the location of the wing / core connection.
- the trace of this fitting cylindrical "minimal" is represented by an arc drawn in lines interrupted and identified by the reference number 38.
- the circular arc 38 which is tangent to the traces of the two planes 32, 34 which would have formed the connection corner concave wing / core respectively in the absence of the extra thickness 26, is supposed determine the minimum allowance in the concave corners necessary for achieve a significant reduction in threshing energy.
- Reference 40 marks the trace of a polygonal connecting surface which lies between the surface 30 and the surface of minimum material 38.
- the present invention presents a profile of threshing and driving by vibration ideal for the implementation in conditions difficult.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Road Paving Machines (AREA)
- Woven Fabrics (AREA)
- Types And Forms Of Lifts (AREA)
- Metal Rolling (AREA)
- Carpets (AREA)
- Wrappers (AREA)
Description
- la Figure 1 montre une section transversale d'une moitié de la palplanche;
- la Figure 2 montre un agrandissement d'un raccord aile/âme de la palplanche de la Figure 1;
Claims (9)
- Palplanche en forme de "U" comprenant une aile plane (10) sur sensiblement toute sa largeur, deux âmes planes (12) raccordées à l'aile (10) de façon à être symétriques par rapport à un plan (8) perpendiculaire à l'aile (10), une serrure d'enclenchement se trouvant en bout de chacune des deux âmes (12); ladite palplanche ayant un rapport profondeur/largeur utile supérieur ou égal à 0,18, où la largeur utile est définie comme étant la distance entre les axes centraux des serrures (14), et la profondeur est définie comme étant la distance qui sépare un plan passant par les axes centraux des deux serrures (14) et la face extérieure (22) de l'aile (10);
caractérisée en ce que les coins concaves (18) définis par les deux raccords aile/âme sont sensiblement aplatis par une surépaisseur (26) de matière, de façon à obtenir une réduction de la résistance à l'enfoncement de la palplanche. - Palplanche selon la revendication 1, caractérisée en ce que ladite surépaisseur (26) est suffisante pour qu'une surface cylindrique fictive (38), qui a un rayon au moins égal à 75 mm et qui est tangente aux plans prolongeant les faces intérieures de l'aile et de l'âme (32, 34), soit complètement située à l'intérieur de ladite surépaisseur (26) entre ses deux génératrices de tangence.
- Palplanche selon la revendication 1 ou 2, caractérisée en ce que les coins convexes (16) sont légèrement arrondis, le rayon d'arrondi étant inférieur ou égal à 25 mm.
- Palplanche selon l'une quelconque des revendications 1 à 3, caractérisée en ce que les surfaces de raccord qui définissent les coins concaves (18) comprennent des surfaces courbes (30).
- Palplanche selon la revendication 4, caractérisée en ce que les surfaces de raccord définissant les coins concaves (18) comprennent des surfaces courbes (30) qui sont tangentes aux faces intérieures planes de l'aile et de l'âme (32 34)
- Palplanche selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les surfaces de raccord définissant les coins concaves (18) comprennent des surfaces polygonales (40).
- Palplanche selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les surfaces de raccord définissant les coins concaves (18) comprennent une surface plane.
- Palplanche selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la palplanche est une palplanche en acier laminée à chaud.
- Palplanche selon l'une quelconque des revendications 1 à 8, caractérisée par un rapport profondeur/largeur utile supérieur ou égal à 0,25.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU88805 | 1996-08-14 | ||
| LU88805A LU88805A1 (fr) | 1996-08-14 | 1996-08-14 | Palplanche en forme de "u" à faible résistance d'enfoncement |
| PCT/EP1997/003951 WO1998006905A1 (fr) | 1996-08-14 | 1997-07-22 | Palplanche en forme de 'u' a faible resistance d'enfoncement |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0918907A1 EP0918907A1 (fr) | 1999-06-02 |
| EP0918907B1 true EP0918907B1 (fr) | 2002-01-23 |
| EP0918907B2 EP0918907B2 (fr) | 2006-01-18 |
Family
ID=19731620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97933694A Expired - Lifetime EP0918907B2 (fr) | 1996-08-14 | 1997-07-22 | Palplanche en forme de "u" a faible resistance d'enfoncement |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US6190093B1 (fr) |
| EP (1) | EP0918907B2 (fr) |
| JP (1) | JP3914577B2 (fr) |
| KR (1) | KR100497424B1 (fr) |
| AT (1) | ATE212400T1 (fr) |
| AU (1) | AU3696097A (fr) |
| CZ (1) | CZ296772B6 (fr) |
| DE (1) | DE69710076T3 (fr) |
| LU (1) | LU88805A1 (fr) |
| PL (1) | PL185213B1 (fr) |
| RU (1) | RU2190061C2 (fr) |
| UA (1) | UA56181C2 (fr) |
| WO (1) | WO1998006905A1 (fr) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7182551B2 (en) * | 2002-11-01 | 2007-02-27 | Jeff Moreau | Re-enforced composite sheet piling segments |
| US20040141815A1 (en) * | 2002-11-01 | 2004-07-22 | Jeff Moreau | Fiber re-enforcement of joints and corners of composite sheet piling segments |
| DE10339957B3 (de) * | 2003-08-25 | 2005-01-13 | Peiner Träger GmbH | Doppel-T-förmiges Spundwandprofil aus Stahl und Werkzeug zur Herstellung des Spundwandprofils |
| US7018140B1 (en) * | 2004-11-23 | 2006-03-28 | Chaparral Steel Company | Z-shaped sheet piling |
| ES2329482T3 (es) * | 2005-12-01 | 2009-11-26 | ARCELORMITTAL BELVAL & DIFFERDANGE | Tablestaca de acero de perfil plano laminada en caliente. |
| DE102009022413A1 (de) * | 2009-05-22 | 2010-11-25 | Contexo Ag | Vorgeformte Anschweißspundbohle sowie Anordnung aus mehreren Spundwandkomponenten mit einer derartigen Anschweißspundbohle |
| US20140270979A1 (en) * | 2013-03-14 | 2014-09-18 | Northern States Metals Company | Flexible post for use as a pile |
| MY185705A (en) * | 2013-08-30 | 2021-05-31 | Jfe Steel Corp | Steel sheet pile |
| CN108842756A (zh) * | 2018-07-04 | 2018-11-20 | 佛山科学技术学院 | 一种钢板桩 |
| RU2692385C1 (ru) * | 2018-12-03 | 2019-06-24 | Публичное акционерное общество "Северсталь" | Шпунтовая свая |
| RU2701265C1 (ru) * | 2018-12-10 | 2019-09-25 | Публичное акционерное общество "Северсталь" | Шпунтовая стенка |
| RU2702959C1 (ru) * | 2018-12-28 | 2019-10-15 | Публичное акционерное общество "Северсталь" | Шпунтовая свая |
| RU2740561C1 (ru) * | 2020-06-23 | 2021-01-15 | Акционерное общество «ЕВРАЗ Нижнетагильский металлургический комбинат» (АО «ЕВРАЗ НТМК») | Шпунтовая свая типа Ларсен |
| WO2025089991A1 (fr) * | 2023-10-27 | 2025-05-01 | Акционерное Общество "Металлургический Завод Балаково" | Palplanche à rainure-languette en forme de u |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE433704A (fr) * | ||||
| US794268A (en) * | 1904-11-17 | 1905-07-11 | Henry Wittekind | Metal sheet-piling. |
| US801946A (en) * | 1905-01-14 | 1905-10-17 | Julius R Wemlinger | Metal sheet-piling. |
| US797786A (en) * | 1905-05-06 | 1905-08-22 | John R Williams | Metal sheet-piling. |
| US848143A (en) * | 1905-10-06 | 1907-03-26 | Julius R Wemlinger | Metal sheet-piling. |
| US818596A (en) * | 1905-10-31 | 1906-04-24 | John R Williams | Metal sheet-piling. |
| US937817A (en) * | 1909-04-01 | 1909-10-26 | Lackawanna Steel Co | Sheet-piling. |
| US1012124A (en) * | 1911-04-22 | 1911-12-19 | Lackawanna Steel Co | Metal sheet-piling. |
| FR434497A (fr) * | 1911-09-22 | 1912-02-03 | Lackawanna Steel Co | Cloisons et palplanches en tole d'acier |
| FR686816A (fr) * | 1928-12-24 | 1930-07-31 | Perfectionnements apportés aux files de palplanches à interenclanchement | |
| DE1135384B (de) * | 1954-05-08 | 1962-08-23 | Hoerder Huettenunion Ag | Staehlerne Spundbohle mit Verstaerkungslamellen |
| SU1477842A1 (ru) * | 1985-08-13 | 1989-05-07 | Днепропетровский Металлургический Институт Им.Л.И.Брежнева | Шпунтова сва |
| US4863315A (en) * | 1988-11-07 | 1989-09-05 | Wickberg Norman E | Retaining wall member |
-
1996
- 1996-08-14 LU LU88805A patent/LU88805A1/fr unknown
-
1997
- 1997-07-22 RU RU99104491/03A patent/RU2190061C2/ru active
- 1997-07-22 DE DE69710076T patent/DE69710076T3/de not_active Expired - Lifetime
- 1997-07-22 UA UA99031376A patent/UA56181C2/uk unknown
- 1997-07-22 JP JP50932798A patent/JP3914577B2/ja not_active Expired - Fee Related
- 1997-07-22 KR KR10-1999-7001237A patent/KR100497424B1/ko not_active Expired - Fee Related
- 1997-07-22 EP EP97933694A patent/EP0918907B2/fr not_active Expired - Lifetime
- 1997-07-22 AT AT97933694T patent/ATE212400T1/de not_active IP Right Cessation
- 1997-07-22 WO PCT/EP1997/003951 patent/WO1998006905A1/fr not_active Ceased
- 1997-07-22 AU AU36960/97A patent/AU3696097A/en not_active Abandoned
- 1997-07-22 US US09/242,367 patent/US6190093B1/en not_active Expired - Lifetime
- 1997-07-22 CZ CZ0047299A patent/CZ296772B6/cs not_active IP Right Cessation
- 1997-07-22 PL PL97331736A patent/PL185213B1/pl unknown
Non-Patent Citations (1)
| Title |
|---|
| Extrait de "Larssen Handbuch", pages 50 et 51, Dortmund-Hörder Hüttenunion AG, Dortmund édition 1960 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3696097A (en) | 1998-03-06 |
| PL185213B1 (pl) | 2003-04-30 |
| US6190093B1 (en) | 2001-02-20 |
| PL331736A1 (en) | 1999-08-02 |
| JP2001502767A (ja) | 2001-02-27 |
| WO1998006905A1 (fr) | 1998-02-19 |
| EP0918907B2 (fr) | 2006-01-18 |
| JP3914577B2 (ja) | 2007-05-16 |
| DE69710076T2 (de) | 2002-07-18 |
| KR20000029981A (ko) | 2000-05-25 |
| CZ296772B6 (cs) | 2006-06-14 |
| UA56181C2 (uk) | 2003-05-15 |
| EP0918907A1 (fr) | 1999-06-02 |
| ATE212400T1 (de) | 2002-02-15 |
| DE69710076T3 (de) | 2006-08-03 |
| KR100497424B1 (ko) | 2005-07-01 |
| DE69710076D1 (de) | 2002-03-14 |
| RU2190061C2 (ru) | 2002-09-27 |
| CZ47299A3 (cs) | 2000-02-16 |
| LU88805A1 (fr) | 1998-02-16 |
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