WO2017063020A1 - Earth retention levee system - Google Patents

Earth retention levee system Download PDF

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Publication number
WO2017063020A1
WO2017063020A1 PCT/AU2016/000348 AU2016000348W WO2017063020A1 WO 2017063020 A1 WO2017063020 A1 WO 2017063020A1 AU 2016000348 W AU2016000348 W AU 2016000348W WO 2017063020 A1 WO2017063020 A1 WO 2017063020A1
Authority
WO
WIPO (PCT)
Prior art keywords
levee system
earth retention
gridspines
retention levee
earth
Prior art date
Application number
PCT/AU2016/000348
Other languages
French (fr)
Inventor
Ryan NUGENT
Stephen David WHELAN
Luke Anthony JARVIE
Original Assignee
Comtec Industries Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2015904157A external-priority patent/AU2015904157A0/en
Application filed by Comtec Industries Pty Ltd filed Critical Comtec Industries Pty Ltd
Priority to CN201680059046.8A priority Critical patent/CN108699798A/en
Priority to US15/766,650 priority patent/US10494783B2/en
Priority to EP16854624.0A priority patent/EP3362607B1/en
Priority to AU2016340014A priority patent/AU2016340014B2/en
Publication of WO2017063020A1 publication Critical patent/WO2017063020A1/en
Priority to AU2018101383A priority patent/AU2018101383A4/en

Links

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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/18—Making embankments, e.g. dikes, dams
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
    • E02D29/0241—Retaining or protecting walls comprising retention means in the backfill the retention means being reinforced earth elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0006—Plastics
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0045—Composites
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0051—Including fibers
    • E02D2300/0053—Including fibers made from glass
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/007—Resins including glasfibers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/40—Miscellaneous comprising stabilising elements

Definitions

  • This invention relates to earth or fill retaining systems. More particularly, although not exclusively it discloses improvements in levee systems for seawalls, bulkheads, retaining walls and like structures.
  • an earth retention levee system which is constructed from spaced apart parallel walls of interlocking sheet piles, said sheet pile having outside faces and inside faces formed with spines along a longitudinal extent thereof, said spines being connected to adjacent edges of Geogrids linking said parallel walls and adapted to stabilise fill disposed therebetween.
  • the spines are formed as a continuous flanges extending out from said inside faces with enlarged or bulbous outer edges.
  • said sheet pile is in the form of a box section which on installation interlocks with another like pile to create a closed wall structure that can be infilled with concrete for increased strength.
  • said sheet pile is fonned from a composite material comprising a fibre reinforced polymer.
  • said composite material includes reinforcement with biaxial E-glass fabrics, continuous strand glass mat, and aligned unidirectional rovings.
  • FIG. 1 shows the angled placement of the walls of the Earth Retention
  • figure 2 shows a perspecti ve view of the sheet pile used to construct the walls of figure 1
  • figure 3 shows a schematic perspective view of the walls with the geogrid mesh and fill in place
  • figure 4 is schematic perspective view of the inside face of one of the walls showing the preferred method of attaching the geogrid mesh DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • the Earth Retention Levee System may be constructed in accordance with the invention using two parallel walls 1 , 2 constructed from sheet piles. They are driven into the ground 3 at a predetermined angle or batter inward toward each other and to a specified depth of for example 600 mm.
  • each sheet pile as shown in figure 2 is preferably of a box section with inside and outside faces 4, 5 and four lateral flanges 6, 7, 8 and 9.
  • a ridge 10 (hereinafter referred to as a gridspine) runs down the inside face 4.
  • the gridspine with this embodiment is offset to one side of the sheet pile and
  • the gridspine is also preferably formed with a broadened outer edge 12.
  • the lateral flanges are preferably angled inwardly at the outer ends and are formed into female and male interlocking clutches 14 and 15 on the right and left sides of the pile sheet respectively as shown.
  • the slots 16 defined within the curved arms of the females clutches are shaped and sized in cross-section for a reasonably close tolerance sliding fit over the enlarged splayed edges 18 of the male clutch whereby the pile is adapted during installation to slidably interlock with an adjacent identical pile to form the solid wall structures 1 , 2 of closed box sections.
  • the walls 1 , 2 would run adjacent the course of a river or other low lying area subject to erosion. As shown in figure 3 they are connected to each other at their bases and at locations above by reinforcement extending between the piles.
  • This reinforcement preferably comprises the "Geogrid" reinforcement material referred to earlier.
  • the Geogrids 20 are built up in vertically spaced horizontal runs between the walls which are progressively packed in with soil 21 or other suitable fill material.
  • the points of connection between the Geogrids and the inside faces of the sheet piles are preferably by means of a composite fibre reinforced polymer rod 22. More specifically, this rod is preferably made of a fibre composite with substantially corrosion resistant vinyl ester resin and E-glass fibre reinforcement.
  • This composite rod allows for a strong corrosion resistant mechanical connection between the sheet pile and the Geogrid. Based on grid placement requirements the gridspine 10 is drilled and the composite rod is inserted through the holes and Grogrid which is then lapped over the rod and preferably fixed with bodkin connectors. This gives the Geogrid a strong positive longitudinal connection to the sheet pile.
  • Geogrid reinforcement 20 serve to spread the soil load acting on the sheet piles by causing the soil to stack vertically as opposed to stacking at its natural angle of repose. This increases global stability, allows the piles to be constructed from a lighter material while reducing the footprint on waterbody easements.
  • the infilling occurs progressively from the bottom up with the installation of the reinforcing grids.
  • the bottom is progressively from the bottom up with the installation of the reinforcing grids.
  • reinforcement grid is secured at the bottom edge of the sheet pile wall and then attached to the other parallel sheet pile wall directly opposite.
  • the fill material 21 is then impacted to a predetermined height above the reinforcement before a subsequent higher vertically spaced horizontal run is attached between the walls. This procedure continues until the required height of infill between the walls is reached.
  • a sheet pile in accordance with this invention may be manufactured by a known process called Pultrusion.
  • Pultrusion This creates fibre reinforced polymer profiles of extraordinary strength and resilience.
  • the reinforcement material is drawn through a liquid thermosetting resin bath.
  • the wet fibrous laminate is then pulled through a heated steel die where precise temperature control cures the material into the profile required.
  • the necessary strength, colour and other characteristics can be designed into the profile by changes in the resin mixture and reinforcement materials.

Abstract

An earth retention levee system is disclosed which is constructed from spaced apart facing parallel walls of interlocking sheet piles (1, 2) said sheet piles having outside faces (5) and inside faces (4) formed with gridspines (10) along a longitudinal extent thereof, said gridspines (10) being connected to adjacent edges of geogrids (20) which link said parallel walls and stabilise fill (21) disposed therebetween.

Description

EARTH RETENTION LEVEE SYSTEM
FIELD OF THE IN VENTION
This invention relates to earth or fill retaining systems. More particularly, although not exclusively it discloses improvements in levee systems for seawalls, bulkheads, retaining walls and like structures.
BACKGROUND TO THE INVENTION
It is well known to drive prefabricated sheet piles into the ground in interlocking fashion to provide a retaining wall behind which loose fill such as soil or sand is disposed. In order to stabilise and reinforce this fill and to prevent erosion and excessive outward load on the piles it is also known to install horizontal spaced apart grids or mesh which extend back into the fill. This diffuses the outward forces that would otherwise act against the back of the piles by causing the fill to "stack vertically" as opposed to stacking at its natural shallower angle of repose. The outward force imposed against the piles is thus substantially reduced. Such grids or meshes are commonly referred to in the industry as "Geogrids". In addition it has been determined that further benefits to the wall structure can be obtained by connecting the Geogrids directly to the back sides of the piles whereby said piles are "tied back" into the fill.
SUMMARY OF THE INVENTION
Accordingly an earth retention levee system is disclosed which is constructed from spaced apart parallel walls of interlocking sheet piles, said sheet pile having outside faces and inside faces formed with spines along a longitudinal extent thereof, said spines being connected to adjacent edges of Geogrids linking said parallel walls and adapted to stabilise fill disposed therebetween.
Preferably the spines are formed as a continuous flanges extending out from said inside faces with enlarged or bulbous outer edges. It is further preferred that said sheet pile is in the form of a box section which on installation interlocks with another like pile to create a closed wall structure that can be infilled with concrete for increased strength.
It is further preferred that said sheet pile is fonned from a composite material comprising a fibre reinforced polymer.
It is further preferred that said composite material includes reinforcement with biaxial E-glass fabrics, continuous strand glass mat, and aligned unidirectional rovings.
BRIEF DESCRIPTION OF THE DRAWINGS
One currently prefen-ed embodiment of the invention will now be described with reference to the attached drawings in which: - figure 1 shows the angled placement of the walls of the Earth Retention
Levee System according to the invention, figure 2 shows a perspecti ve view of the sheet pile used to construct the walls of figure 1, figure 3 shows a schematic perspective view of the walls with the geogrid mesh and fill in place, figure 4 is schematic perspective view of the inside face of one of the walls showing the preferred method of attaching the geogrid mesh DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring first to figure 1 the Earth Retention Levee System may be constructed in accordance with the invention using two parallel walls 1 , 2 constructed from sheet piles. They are driven into the ground 3 at a predetermined angle or batter inward toward each other and to a specified depth of for example 600 mm.
Preferably but not essentially the inward slope may be of the order of 5 degrees from the vertical. Each sheet pile as shown in figure 2 is preferably of a box section with inside and outside faces 4, 5 and four lateral flanges 6, 7, 8 and 9. A ridge 10 (hereinafter referred to as a gridspine) runs down the inside face 4. The gridspine with this embodiment is offset to one side of the sheet pile and
preferably aligns with an internal web 1 1 for increased strength. The gridspine is also preferably formed with a broadened outer edge 12. The lateral flanges are preferably angled inwardly at the outer ends and are formed into female and male interlocking clutches 14 and 15 on the right and left sides of the pile sheet respectively as shown. The slots 16 defined within the curved arms of the females clutches are shaped and sized in cross-section for a reasonably close tolerance sliding fit over the enlarged splayed edges 18 of the male clutch whereby the pile is adapted during installation to slidably interlock with an adjacent identical pile to form the solid wall structures 1 , 2 of closed box sections. By virtue of the aforementioned inward angle of the flange ends the interlocking clutches are set into the wall structure to protect them from damage and also provide a protrusion free surface.
Typically the walls 1 , 2 would run adjacent the course of a river or other low lying area subject to erosion. As shown in figure 3 they are connected to each other at their bases and at locations above by reinforcement extending between the piles. This reinforcement preferably comprises the "Geogrid" reinforcement material referred to earlier. The Geogrids 20 are built up in vertically spaced horizontal runs between the walls which are progressively packed in with soil 21 or other suitable fill material. As shown in figure 4 the points of connection between the Geogrids and the inside faces of the sheet piles are preferably by means of a composite fibre reinforced polymer rod 22. More specifically, this rod is preferably made of a fibre composite with substantially corrosion resistant vinyl ester resin and E-glass fibre reinforcement. This composite rod allows for a strong corrosion resistant mechanical connection between the sheet pile and the Geogrid. Based on grid placement requirements the gridspine 10 is drilled and the composite rod is inserted through the holes and Grogrid which is then lapped over the rod and preferably fixed with bodkin connectors. This gives the Geogrid a strong positive longitudinal connection to the sheet pile.
After infilling and compacting the fill between the parallel walls 1, 2 as shown in figure 3 the vertically spaced runs of Geogrid reinforcement 20 serve to spread the soil load acting on the sheet piles by causing the soil to stack vertically as opposed to stacking at its natural angle of repose. This increases global stability, allows the piles to be constructed from a lighter material while reducing the footprint on waterbody easements. Preferably the infilling occurs progressively from the bottom up with the installation of the reinforcing grids. In accordance with the currently preferred embodiment of the invention the bottom
reinforcement grid is secured at the bottom edge of the sheet pile wall and then attached to the other parallel sheet pile wall directly opposite. The fill material 21 is then impacted to a predetermined height above the reinforcement before a subsequent higher vertically spaced horizontal run is attached between the walls. This procedure continues until the required height of infill between the walls is reached.
The piles are installed typically, but not exclusively, by driving them into soil or fill with appropriate pile drivers and the box sections can be subsequently infilled with concrete or other material for added strength. Preferably, although not essentially, a sheet pile in accordance with this invention may be manufactured by a known process called Pultrusion. This creates fibre reinforced polymer profiles of extraordinary strength and resilience. The reinforcement material is drawn through a liquid thermosetting resin bath. The wet fibrous laminate is then pulled through a heated steel die where precise temperature control cures the material into the profile required. The necessary strength, colour and other characteristics can be designed into the profile by changes in the resin mixture and reinforcement materials.
It will thus be appreciated that this invention at least in the form of the
embodiment disclosed provides a novel and improved form of earth retention levee system for retaining walls, sea walls and like structures. Clearly however the example described is only the currently preferred embodiment of the invention and a wide variety of modifications may be made which would be apparent to a person skilled in the art. For example the shape, configuration and dimensions of the sheet pile, the material of which it is constructed and its method of manufacture may change according to application and design preference.

Claims

The claims:-
1. An earth retention levee system constructed from spaced apart
facing parallel walls of interlocking sheet piles, said sheet piles having outside faces and inside faces formed with gridspines along a longitudinal extent thereof, said gridspines being connected to adjacent edges of geogrids which link said parallel walls and stabilise fill disposed therebetween.
2. The earth retention levee system as claimed in claim 1 wherein said gridspines extend vertically.
3. The earth retention levee system as claimed in claim 2 wherein said gridspines are formed as continuous flanges extending out from said inside faces and have enlarged or bulbous outer edges.
4. The earth retention levee system as claimed in claim 3 wherein each sheet pile is in the form of a box section which on installation interlocks with another like pile to create a closed wall structure that can be infilled with concrete for increased strength.
5. The earth retention levee system as claimed in claim 4 wherein said geogrids are built up in vertically spaced horizontal runs between said walls.
6. The earth retention levee system as claimed in claim 5 wherein said sheet piles are formed from a composite material comprising a fibre reinforced polymer.
7. The earth retention levee system as claimed in claim 6 wherein said composite material includes reinforcement with biaxial E-glass fabrics, continuous strand glass mat and aligned unidirectional rovings.
8. The earth retention levee system as claimed in claim 7 wherein
points of connection between said gridspines and geogrids are by means of rods inserted through holes in said gridspines with edges of said geogrids lapped over said rods.
9. The earth retention levee system as claimed in claim 8 wherein said parallel walls of interlocking sheet piles are driven into a ground area at a predetermined angle inward to each other.
10. The earth retention levee system as claimed in claim 9 wherein said angle is about 5 degrees.
PCT/AU2016/000348 2015-10-13 2016-10-12 Earth retention levee system WO2017063020A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201680059046.8A CN108699798A (en) 2015-10-13 2016-10-12 Soil conservation dykes and dams system
US15/766,650 US10494783B2 (en) 2015-10-13 2016-10-12 Earth retention levee system
EP16854624.0A EP3362607B1 (en) 2015-10-13 2016-10-12 Earth retention levee system
AU2016340014A AU2016340014B2 (en) 2015-10-13 2016-10-12 Earth retention levee system
AU2018101383A AU2018101383A4 (en) 2015-10-13 2018-09-21 Earth retention levee system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2015904157A AU2015904157A0 (en) 2015-10-13 Earth Retention Levee System
AU2015904157 2015-10-13

Publications (1)

Publication Number Publication Date
WO2017063020A1 true WO2017063020A1 (en) 2017-04-20

Family

ID=58516933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2016/000348 WO2017063020A1 (en) 2015-10-13 2016-10-12 Earth retention levee system

Country Status (5)

Country Link
US (1) US10494783B2 (en)
EP (1) EP3362607B1 (en)
CN (1) CN108699798A (en)
AU (2) AU2016340014B2 (en)
WO (1) WO2017063020A1 (en)

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Also Published As

Publication number Publication date
US20180305883A1 (en) 2018-10-25
EP3362607A1 (en) 2018-08-22
AU2016340014A1 (en) 2018-04-26
EP3362607B1 (en) 2022-08-17
CN108699798A (en) 2018-10-23
US10494783B2 (en) 2019-12-03
AU2016340014B2 (en) 2019-08-29
EP3362607A4 (en) 2019-07-31
AU2018101383A4 (en) 2018-10-25

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