Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1993-06-25
1995-04-04
Corbin, David H.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
405284, E02D 2902
Patent
active
054031273
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a retaining wall structure for large-scale construction works, such as roads, railway tracks or quay constructions, where substantial amounts of earth or material are to be retained, wherein the wall structure comprises a front wall and a rear wall locked at a distance from said front wall by means of easily mountable crossbeams and wherein the crossbeams are locked relative to one another in vertical direction by means of locking beams so as to achieve a three-dimensional structure with interconnected and locked parts, filler being filled into the space between the front wall and the rear wall.
Background Art
U.S. Pat. No. 4,341,491 discloses an earth retaining structure including a frontal wall which is fixedly secured to a rear wall through tension rods passing therebetween. The frontal wall is constituted by a plurality of massive panels and the rear wall is constructed by wire mesh screens. The frontal panels are connected to vertical support members placed between said panels. This construction is, however, rather complicated and require skilled construction workers because stability problems may arise during its erection.
U.S. Pat. No. 4,490,075 discloses an interlocking block and retaining wall system derived from such blocks. The system comprises a frontal wall and a rear wall each of which consists of said blocks arranged atop of each other. All the blocks are:arranged so that they are in an upright position, i.e. no blocks are in an upside-down position. The walls are interconnected by crossbeams. This retaining wall system, however, does not involve use of panels.
Description of the Invention
The object of the invention is to provide a retaining wall structure of the above type, which is more simple and reliable than the previous structures, and which consequently can be built by unskilled construction workers.
The retaining wall structure according to the invention is characterised in that the front wall and the rear wall are constituted by substantially identical panels arranged side by side and above one another, the panels of each wall being arranged such that alternately they are in upright position and upside-down position and having hook-like members (19) interconnecting said panels, said members interlocking said panels in a horizontal direction. The resulting retaining wall structure is a so-called "gravity wall" and is particularly easy to build with the result that unskilled persons can perform the building thereof. During the building process, the individual parts of the retaining wall structure are quickly stabilized by the crossbeams and the locking beams. All the parts of the retaining wall structure are three-dimensionally locked with the effect that said parts can resist tensile and pressure forces in all three dimensions. No binder, such as mortar, is necessary. In addition, it is possible to build a relatively high and rather resilient retaining wall structure. The sand or earth being removed during the building of the retaining wall structure can be reused and consequently utilized as filler in the retaining wall structure. The panels of the front wall and the rear wall are suitably interconnected in such a manner that they cannot be displaced relative to one another. By arranging the panels such that alternately they are in upright position and upside-down position, and providing the panels with hook-like members interconnecting the panels, the members interlocking the panels in horizontal direction, the resulting connection of the panels of each wall is very reliable and prevents the panels from being mutually staggered in their own plane.
According to the invention, portions of the front wall and the rear wall may be mutually staggered in a direction perpendicular to their largest planar surface, whereby the retaining structure can be of a varying thickness.
Moreover according to the invention the panels of the front wall may directly oppose corresponding panels of the rear wall, whereby the panels and the crossbeams form "b
REFERENCES:
patent: 2123016 (1938-07-01), McDaniel
patent: 2892340 (1959-06-01), Fort
patent: 4341491 (1982-07-01), Neumann
patent: 4449858 (1984-05-01), Hynds
patent: 4490075 (1984-12-01), Risi et al.
patent: 4923339 (1990-05-01), Smith
patent: 4932812 (1990-06-01), Schaaf
International Search Report for International Application PCT/DK91/00397, dated Mar. 27, 1992.
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