Road structure – process – or apparatus – Pavement – Modules or blocks
Patent
1981-05-04
1982-12-07
Byers, Jr., Nile C.
Road structure, process, or apparatus
Pavement
Modules or blocks
52578, 403182, E01C 500
Patent
active
043624260
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a road surface consisting of single elements that are connected to each other.
Very frequently, on construction sites, for example when a detour has to be built around a main road because of construction work, or to provide access to a construction site on one side of a road, it is often necessary to lay down a temporary road that, after conclusion of the construction work, must be lifted once again. According to scope and primarily to the weight of the traffic that will use this road such temporary surfaces in part are very solidly built, which increases construction costs. In particular, breaking up such a road surface and the restoration of the original state of the ground can entail considerable costs in time and money.
The present invention provides a road surface which is particularly intended for such purposes and which has the advantage that it can be laid very quickly and with minimum cost, and can be removed just as quickly so that it can be reused at another site.
Such a road surface is characterized according to the invention.
An embodiment of the road surface according to the invention is represented in the drawings, wherein show:
FIG. 1 a perspective exploded view representation of a movable locking piece in its installed position as well as an illustration of an element of the portion which accommodates this locking piece (the connecting element not being shown);
FIG. 2 a perspective view of one half of the locking piece;
FIG. 3 portions of each element which accommodate the locking piece;
FIG. 4 a plan view of two elements interconnected from above;
FIG. 5 a cross-section along line V--V;
FIG. 6 a cross-section along line VI--VI; and
FIGS. 7a, 7b means used for securing the locking piece.
The lower portion of FIG. 1 shows a concrete road surface element 1 which is connected to a second element, particularly with the element 1', which is shown in FIG. 6, by means of the locking piece numbered 2. For this purpose each of these elements 1,1' which are predominantly square or rectangular, has a semi-circular cut-out portion 3,3", which together forms a chamber to accommodate the locking piece 2. Each cut-out portion is covered by various metal parts, or traversed by them, which, for the sake of clarity, are shown in the same arrangement but without the body portions of the elements in FIG. 3. Here can be seen a vertical plate 4, which consists of three sections 4a, 4b and 4c that are separate and arranged at an angle to each other, in which connection, according to FIG. 1, the centre section 4b limits the semi-circular section 3, however, to only part of its height. On this section 4b there is a semi-circular ring 5 that is so attached that this section 4b constitutes its diameter, as it were. The semi-circular ring 5 protrudes above the upper edge of the section 4b as far as the upper surface of the surface element 1 and rests against the section 4b but has its lower portion set back somewhat so that these lower portions abut against the section 4b and can be welded to it. The semi-circular ring is traversed by an extremely heavy bolt 6 which ends at the section 4b, at right angles to it. This is welded to the section 4b; the welds 7 have been indicated in FIG. 3. Plate 4, the semi-circular ring 5, and the bolt 6 thus form a rigid insert in the element 1 as can be seen particularly in FIG. 3, this bolt 6 is arranged assymetrically to the cut-out portion 3, for reasons which will be explained later. The level of this bolt 6 relative to the plate 4 and the semi-circular ring 5 can be seen particularly clearly in FIG. 6.
At its rear end, that is completely surrounded by the concrete of the element 1, the bolt 6 bears a V-shaped pressure distributing plate 8. The pressure distributing plate 8 distributes the forces on the bolts 6, which in the main, are effective upwards, over a broad area within the element, reducing the strain thereby.
All the parts 4,5,6 and 8 shown in FIG. 3 are preferably made of cast steel and welded to each other, even though only the welds
REFERENCES:
patent: 14736 (1856-04-01), Robinson
patent: 1660421 (1928-02-01), Knight
patent: 2588609 (1952-03-01), Blackhall
patent: 2629139 (1953-02-01), Thelander
patent: 2672660 (1954-03-01), Becker
patent: 3175476 (1965-03-01), Franks
patent: 3341233 (1967-09-01), Cushman
patent: 3379104 (1968-04-01), Scholl
patent: 4011022 (1977-03-01), Welty
patent: 4145862 (1979-03-01), Sygnator
patent: 4191489 (1980-03-01), Ray et al.
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