Stabilizing element for mechanically stabilized earthen structure

• US 6,336,773 B1
• Filed: 10/14/1999
• Issued: 01/08/2002
• Est. Priority Date: 03/31/1993
• Status: Expired due to Term

• Current Assignee: Terre Armee Interantionale
• Original Assignee: Societe Civile Des Brevets Henri Vidal
• Inventors: Hotek, Dan J., Anderson, Peter L., Cowell, Michael J.
• Primary Examiner(s): Bagnell, David
• Assistant Examiner(s): LAGMAN, FREDERICK LYNDON
• Application Number:
  US09/418,063
• Time in Patent Office: 817 Days
• Field of Search: 405/262, 405/284, 405/285, 405/286
• US Class Current: 405/262
• CPC Class Codes: E02D 29/02 Retaining or protecting walls piers or quay walls E02B3/06
• CPC Class Codes: E02D 29/0225 comprising retention means in the backfill
• CPC Class Codes: E02D 29/0241 the retention means being reinforced earth elements
• CPC Class Codes: E02D 29/025 made up of similar modular elements stacked without mortar
• CPC Class Codes: E02D 29/0283 of mixed type
• CPC Class Codes: E04B 2/22 using elements having a general shape differing from that of a parallelepiped
• CPC Class Codes: E04B 2002/026 Splittable building elements
• CPC Class Codes: E04C 1/395 for claustra, fences, planting walls, e.g. sound-absorbing pots for vertical horticulture A01G9/022

Abstract

A modular block wall includes dry cast, unreinforced modular wall blocks with anchor type, or frictional type or composite type soil stabilizing elements recessed therein and attached thereto by vertical rods which also connect the blocks together. The soil stabilizing elements are positioned in counterbores or slots in the blocks and project into the compacted soil behind the courses of modular wall blocks. Alternative stabilizing element designs may be used with the modular wall blocks and other types of facing elements in a mechanically stabilized earth structure.

Claims

1. An improved mechanically stabilized earthen structure comprising in combination:

(A) a plurality of facing members arrayed in overlapping courses one upon the other, each facing member having a front face, a back face, and sides connecting the front face to the back face, said facing members forming a wall having a back side,

(B) a plurality of individual, stabilizing elements connected to the wall and extending rearwardly from the back side of the wall, the individual stabilizing elements consisting essentially of at least one solely, generally rigid stabilizing element and at least one solely, generally flexible stabilizing element each element being attached to the back side; and

(C) compacted soil along the back side of the wall for receipt of the stabilizing elements extended from the backside of the wall into the compacted soil to provide frictional interaction with the soil.

2. The earthen structure of claim 1, wherein the generally rigid stabilizing element comprises at least two generally parallel tension arms.

3. The earthen structure of claim 1, wherein the generally rigid stabilizing element comprises at least two generally parallel tension arms and at least two of the tension arms are connected together by at least one cross member.

4. The earthen structure of claim 1, wherein the flexible stabilizing element is made of a geotextile material.

5. The earthen structure of claim 1, wherein the flexible stabilizing element is made of a polymeric material.

6. The earthen structure of claim 1, wherein the flexible stabilizing element is a lattice of polymeric strips.

7. The earthen structure of claim 1, wherein the flexible stabilizing element is a grid-like material.

8. The earthen structure of claim 1, wherein the generally rigid stabilizing element is made of a metal material.

9. The earthen structure of claim 1, wherein at least one generally rigid stabilizing element is placed in a lower course of compacted soil and at least one flexible stabilizing element is place in an upper course of compacted soil relative to the lower course.

10. The earthen structure of claim 1, wherein at least one flexible stabilizing element is placed in a lower course of compacted soil and at least one generally rigid stabilizing element is placed in an upper course of compacted soil relative to the lower course.

11. The earthen structure of claim 1, wherein the wall has an upper portion and a lower portion, wherein at least one generally rigid stabilizing element is connected to the lower portion of the wall, and wherein at least one flexible stabilizing element is connected to the upper portion of the wall.

12. The earthen structure of claim 1, wherein the wall has an upper portion and a lower portion, wherein at least one generally rigid stabilizing element is connected to the upper portion of the wall, and wherein at least one flexible stabilizing element is connected to the lower portion of the wall.

13. The earthen structure of claim 1, further comprising at least one connecting element coupling the stabilizing element to the wall.

14. The earthen structure of claim 1, further comprising means for coupling the stabilizing element to the wall.

15. The earthen structure of claim 1, wherein the rigid and flexible stabilizing elements are alternating.

16. The earthen structure of claim 1, wherein the facing members are panel members.

17. An improved mechanically stabilized earthen structure comprising in combination:

(A) a plurality of facing members arrayed in overlapping courses one upon the other said facing members forming a wall having a back side with a back face;

(B) a plurality of stabilizing elements connected to the wall and extending rearwardly from the back face of the wall, the stabilizing elements consisting essentially of at least one solely metal stabilizing element and at least one solely geotextile stabilizing element; and

(C) compacted soil along the back side of the wall for receipt of the stabilizing elements extended rearwardly from the back side of the wall into the compacted soil to provide frictional interaction with the soil.

18. The earthen structure of claim 17, wherein the metal stabilizing element comprises at least two generally parallel tension arms.

19. The earthen structure of claim 18, wherein at least one metal stabilizing element is placed in a lower course of compacted soil an at least one geotextile stabilizing element is placed in an upper course of compacted soil relative to the lower layer.

20. The earthen structure of claim 17, wherein the metal stabilizing element comprises at least two generally parallel tension arms and at least two of the tensions arms are connected together by at least one cross member.

21. The earthen structure of claim 17, wherein the geotextile stabilizing element is made of a polymeric material.

22. The earthen structure of claim 17, wherein the geotextile stabilizing element is a lattice of polymeric strips.

23. The earthen structure of claim 17, wherein the geotextile stabilizing element is a grid-like material.

24. The earthen structure of claim 17, wherein the wall has an upper portion and a lower portion, wherein at least one metal stabilizing element is connected to the lower portion of the wall, and wherein at least one geotextile stabilizing element is connected to the upper portion of the wall.

25. The earthen structure of claim 17, wherein the wall has an upper portion and a lower portion, wherein at least one metal stabilizing element is connected to the upper portion of the wall, and wherein at least one geotextile stabilizing element is connected to the lower portion of the wall.

26. The earthen structure of claim 17, further compromising at least one connecting element coupling the stabilizing element to the wall.

27. The earthen structure of claim 17, further comprising means for coupling the stabilizing element to the wall.

28. A mechanically stabilized earthenwork structure comprising, in combination:

(A) a plurality of stacked block members forming a wall facing for the earthenwork, said wall facing including a back side with a back face;

(B) compacted soil on the back side of the wall; and

(C) a plurality of substantially horizontal soil reinforcing members in layers in the compacted soil engaging with the soil at least in part by friction, at least some of the reinforcing member layers consisting essentially of a solely, flexible material member and at least some of the reinforcing member layers consisting essentially of a solely, generally rigid material, said reinforcing members including connectors for attaching the reinforcing members to the block members at the back face of the wall facing.