Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1986-07-02
1987-08-11
Taylor, Dennis L.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
52 88, 138105, 405149, E01F 500
Patent
active
046858296
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a modular construction system for a covered structure of large section, and to a process for constructing the same, and applies in particular to the construction of underground conduits or of buildings.
In the Applicants' European patent application No. 00 81 402 a process has already been described for the construction of a covered structure in the form of a conduit of large section produced by assembling prefabricated longitudinal elements, each of which forms only a part of the cross-section and which are connected together by optionally articulated longitudinal connections. This process, as described therein, is applicable to conduits or underground passages whose cross-section, which is preferably flattened at the base with a width-to-height ratio of about 1.5, may be as great as 35 square meters or even more. It will be realized that it is difficult to give such conduits a width of the order of two or three times their height, for example, because it would then be necessary for the elements of the structure to be reinforced in a prohibitive manner.
However, passages of great width are sometimes required, for example for multilane road underpasses, where a great height is not necessary and is even inadvisable because of the uselessly entailed volume of earthwork, or where such a height is even inacceptable, for example because of the need to confine the works to a prescribed maximum height.
Furthermore, in certain cases it may be advantageous to increase the ground level area of the volume constructed and consequently for a given section, to increase its width by reducing its height in comparison with a conduit of conventional section.
The present invention seeks to solve these problems by making improvements and extensions to the technique of constructing conduits of large section which is described in the above-mentioned European patent application.
In a general way, a large-section conduit of this kind is produced by assembling prefabricated elements, namely flat elements forming a floor, side elements disposed on each side of the floor, and roof elements of curvilinear profile resting, preferably with interposed articulated supports, on the top ends of the side elements, the latter including a curved wall whose inner profile joins at the top that of the roof elements and, at the bottom, the horizontal floor. In addition, the side elements rest on the ground with interposed external stabilizers, which give them sufficient support to enable them to stand upright without additional supports, scaffolding, or the like.
The present invention covers a modular construction system for a covered structure composed of at least two sections lying side by side and having parallel axes, each bounded at the top by a floor element, at the bottom by a roof element, and, at the sides, on the outside by a side element and on the inside by at least one intermediate pier supported on the ground by means of a sole piece interposed between the floor elements framing it; said pier supports an intermediate longitudinal girder comprising two side walls diverging in V-shape so as to form two support surfaces in the form of concave grooves on which rest the adjacent longitudinal sides of the two corresponding roof elements.
In a first embodiment each intermediate pier is composed of a vertical wall, in which openings are optionally formed and which is provided at its base with a continuous sole piece, while its top part forms the intermediate longitudinal support girder for the roof elements.
In another embodiment each intermediate pier is composed of a series of pillars provided at their base with individual support sole pieces, which are laid between the adjacent longitudinal edges of the floor elements, the gaps between the floors and between the sole pieces being concreted after laying, in order to join the whole arrangement together. The intermediate longitudinal member may advantageously be extended, above the supports, by a shouldering beam of sufficient height to enable it to withstan
REFERENCES:
patent: 997382 (1911-07-01), Foster
patent: 1120104 (1914-12-01), Thomas
patent: 1746566 (1930-02-01), Tufts
patent: 3858614 (1975-01-01), Moore et al.
patent: 4314775 (1982-02-01), Johnson
patent: 4595314 (1986-06-01), Lockwood
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