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Reinforced Soil Retaining Wall System and Method of Construction

Inactive Publication Date: 2008-10-30
MODALCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]The passage may be substantially vertically oriented relative to the top or base section of the block to maximize the pull out forces required to remove the length of strip reinforcement from the passage after it has been inserted.
[0013]In one embodiment, the passage extends through the full height of the block from a first opening provided in the bottom surface of the block to a second opening provided in the top surface of the block which allows the length of strip reinforcement to be inserted through the passage from the first opening to the second opening with a fourth portion of the length of strip reinforcement arranged to extend outwardly from the rear face of the block to be secured in position substantially perpendicular to the wall during backfilling and compaction. The fourth portion may be arranged in general coplanar alignment with respect to the top or bottom face of the block away from the wall immediately prior to backfilling and compaction to maximize resistance to pull-out forces.
[0015]In one embodiment, the system further comprises one or more shear pins to resist sliding movement of a first course over an adjacent second course and may further comprise a drainage channel configured to direct moisture from the retained side of the wall towards the dredge side of the wall. The drainage channel is particular advantageous for use with clay soils to relieve any buildup of hydrostatic pressure on the retained side of the wall.
[0034]a second plurality of sections of soil reinforcement for stabilizing a quantity of backfilled and compacted soil on the retained side of the wall, the second plurality of sections of soil reinforcement being spaced apart from the first plurality of sections of soil reinforcement and arranged to extend substantially perpendicular to the wall during backfilling and compaction.

Problems solved by technology

Gravity retaining walls cost more money to install, which each block in the wall consisting of a mass of concrete or stone.

Method used

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  • Reinforced Soil Retaining Wall System and Method of Construction
  • Reinforced Soil Retaining Wall System and Method of Construction
  • Reinforced Soil Retaining Wall System and Method of Construction

Examples

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first embodiment

[0077]the reinforced soil retaining wall system 10 of present invention is now described with reference to FIGS. 1 to 7, the reinforced soil retaining wall system 10 comprising a plurality of blocks 12 arranged in courses 14 to form a wall 16. Soil reinforcement is provided to the wall 16 using a plurality of lengths of strip reinforcement 18 inserted in and extending from the blocks 12, the strip reinforcement 18 being buried under compacted backfill 20 either as each course 14 is laid or after construction of the wall 16.

[0078]With reference to FIGS. 1, 2(a) and 2(b), the blocks 12 used in accordance with a first embodiment of the reinforced soil wall system 10 comprise a front face 22, a rear face 24 spaced from said front face by a distance defining the depth of the block 12, opposing side surfaces 26 and 28 respectively, spaced from each other by a distance defining the width of the block 12, a top surface 30 and a bottom surface 32 spaced from the top surface 30 by a distance ...

third embodiment

[0109]This based on a realization that the top 0.1-0.9 meters of the retaining wall is effectively self-supporting. The transition depth 92 depends in part on the anticipated depth of any installations or structures to be constructed on the retained side of the wall, but it is anticipated that the transition depth will not exceed one metre and will more likely be around 0.4 to 0.6 m below the final anticipated height of the composite wall 90.

[0110]A soil reinforcement protection barrier 98 may be installed at the transition depth 92 in general coplanar alignment with respect to the top surface 30 of the uppermost course 14 of the lower section 96. The barrier 98 serves as a visual or physical barrier to protect the strip reinforcement 18 from damage during subsequent building operations adjacent to the completed retaining wall. Accordingly, the barrier 98 may take the form of a thin planar strip of plastic that provides a visual indication that the transition depth has been reached ...

fourth embodiment

[0111]the system 10 and blocks 12 of the present invention is illustrated in FIGS. 12 and 13 for which like reference numerals refer to like parts. This embodiment has been designed specifically to deal with problems associated with using backfill such as clay soils which have a very slow rate of permeation of water. As a result of the low permeability of the soil, the backfill 20 may become saturated over time, for example due to precipitation, resulting in a buildup in water being stored on the retained side 32 of the wall 16. This causes hydrostatic pressure on the wall 16 to increase, effectively pushing against the retained side 32 of the wall 16.

[0112]One way to overcome this problem is to place a vertically oriented permeable layer 104 of permeable material such as drainage aggregate adjacent to the retained side 32 of the wall 16 to allow water to drain under gravity from behind the wall through a drainage channel 106 positioned towards the base of the wall 16 and extending ...

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Abstract

A reinforced soil retaining wall system (10) in which a plurality of blocks (12) are arranged in courses (14) to form a wall (16). Soil reinforcement is provided to the wall (16) using a plurality of lengths of strip reinforcement (18) inserted in and extending from the blocks (12), the strip reinforcement (18) being buried under compacted backfill (20) either as each course (14) is laid or after construction of the wall (16). Also disclosed is the use of a second plurality of sections of soil reinforcement, spaced apart from the first plurality of sections and arranged to extend perpendicular to the wall.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a reinforced soil retaining wall system and a method of construction of a reinforced soil retaining wall. The present invention further relates to a block used in the construction of a reinforced soil retaining wall and a length of strip reinforcement used in the construction of a reinforced soil retaining wall.[0002]The present application claims priority from Australian provisional patent application 2004901725 filed on 1 Apr. 2004, Australian provisional patent application 2004901789 filed on 5 Apr. 2004, Australian provisional patent application 2004907121 filed on 15 Dec. 2004 and Australian provisional patent application 2005900832 filed on 23 Feb. 2005.BACKGROUND TO THE INVENTION[0003]Retaining walls are defined as any wall that restrains material on one side of a wall to maintain a difference in elevation. Nearby slopes, driveways, buildings, and tiered walls all represent potential loads on retaining walls. There ...

Claims

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Application Information

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IPC IPC(8): E02D29/02E02D5/76E02D17/20
CPCE02D29/0225E02D29/0233
Inventor COSTIN, SAMUEL PATRICK
Owner MODALCO
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