Static structures (e.g. – buildings) – With piercing or expanding earth anchor
Patent
1985-05-28
1987-03-10
Pate, III, William F.
Static structures (e.g., buildings)
With piercing or expanding earth anchor
52738, 52292, 405237, E02D 2700
Patent
active
046482202
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a supporting member, intended to be driven down into soil, clay, sand or any other foundation, and to serve as a load absorbing and supporting member.
For many fields of use, supporting members are required, which can be applied against a foundation lacking required load supporting capability, or with respect to foundations in which a certain movement can be expected in the foundation material. As base reinforcement for house building projects, pile driving methods are normally used today, whereby for instance concrete poles are driven down through a soft ground layer to a supporting ground layer. For construction work below water, cylindrical pipes are also used for certain applications, driven down through an existing soft bottom layer to a lower located solid rock or other firm layer.
With respect to both these methods, the supporting members must normally be driven down to a relatively large depth, which is time and cost consuming. Even with regard to simple construction work, e.g. small craft landing-stages, for which cylindrical pipes often are used to support the fixed portion of the landing-stage, considerable lengths of pipe may be required, resulting in joining operations being necessary, but also in high costs for the pipes utilized. Previously known load supporting members are also characterised in a relatively large weight, and also large longitudinal extension, which results in difficult and expensive transport to the construction site.
SUMMARY OF THE INVENTION
The object of the present invention is to disclose a supporting member, which can be used as replacement for previously known types of members for the above mentioned purposes, and which do not require driving to the same depth as previously known types of members, and also have a considerably reduced weight in relation to previously used members. The member according to the present invention can further easily be modified to suit all types of foundation, and the costs for application, and manufacture of the member, are considerably lower than previously known types. The member according to the present invention has normally a relatively short longitudinal length of extension, and low weight, which facilitates simplified and low cost transports, and storage.
The supporting member according to the present invention is mainly characterised in that it comprises of at least one conical tubular member, having a number of profiled portions extending in longitudinal direction of the member, the larger end portion being arranged to be diametrically expanded, when said larger end portion is driven down, by means of internal pressure application from foundation material entering into the tubular member, thereby forming a relatively large expanded supporting surface in relation to the foundation.
BRIEF DESCRIPTION OF THE DRAWINGS
A number of embodiments of a supporting member according to the present invention are more fully described below with reference to the enclosed drawings, in which:
FIG. 1 shows a perspective view of a first embodiment of a supporting member according to the present invention, the direction of application against a foundation being indicated be means of arrows.
FIG. 2 shows a view corresponding to FIG. 1, when the member has been driven down into a not shown foundation, and expanded with regard to the larger end portion.
FIG. 3 shows a perspective view of a second embodiment of a member according to the present invention, driven down into a not shown foundation with a direction of application as indicated by arrows, and expanded with regard to the larger end portion.
FIGS. 4A, 4B and 4C show perspective views of the parts included in the member shown in FIG. 3, said parts being shown before the expansion caused when driven down into a foundation.
DETAILED DESCRIPTION OF THE INVENTION
With reference to FIG. 1, a frustoconical tubular member is shown, as a complete unit designated 1, and having longitudinally extending corrugations or profiled portions 2
REFERENCES:
patent: 1426044 (1922-08-01), Clum
patent: 1821850 (1931-09-01), Riemenschneider
patent: 3855745 (1974-12-01), Patterson et al.
Dennison Caroline D.
Pate III William F.
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