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Foundation structure

a foundation structure and composite technology, applied in foundation engineering, construction, building construction, etc., can solve the problems of prone to collapse of the sidewall of the trenches, relatively difficult construction of the so-called waffle raft foundation,

Inactive Publication Date: 2005-12-29
PIDGEON JOHN TERRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0003] It is accordingly an object of the present invention to provide a composite foundation structure and a method of constructing such structure with which the aforesaid disadvantage can be overcome or at least minimised. SUMMARY OF THE INVENTION

Problems solved by technology

In certain problem soil conditions, such as sandy, cobbly, clayey, gravely soil or the like, conventional so-called waffle raft foundations are relatively difficult to construct.
The reason for this is that when digging a grid of intersecting trenches in such problem soil, the sidewalls of the trenches tend to collapse.

Method used

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first embodiment

[0027] Referring to FIGS. 1 and 2, a composite foundation structure according to the invention is generally designated by reference numeral 10.

[0028] The foundation structure 10 comprises shuttering 12 of pre-cast panels 14, defining an intersecting grid of channels 16 wherein beams 18 of settable material are cast.

[0029] The pre-cast panels 14 are of a fibre-reinforced concrete and are preferably in the form of reject panels of the type used in mining applications, for example. The applicant has found that reject panels are preferable due to their relatively rough surface. The pre-cast panels 14 are nailed to each other to form rectangular structures 14.1 each defining a central opening 14.2.

[0030] In use, the ground surface 22 (FIG. 2) is levelled by removing a body of soil and the rectangular structures 14.1 arranged on the ground 22, with the panels 14 in parallel extending spaced relationship, and with adjacent rectangular structures 14.1 being connected to and spaced from ea...

third embodiment

[0034] Referring to FIG. 4, a composite foundation structure according to the invention is generally designated by reference numeral 10B. The foundation structure 10B is similar to the foundation structure 10, with the exception that the pre-cast panels 14B are arranged to provide a triangular internal opening 14.2B.

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Abstract

The invention provides a method of constructing a composite foundation structure (10) comprising shuttering (12) of pre-cast panels (14), defining an intersecting grid of channels (16) wherein beams (18) of settable material are cast. The panels (14) are connected to form rectangular structures (14.1). The rectangular structures are arranged on the ground (22), with the panels (14) in parallel extending spaced relationship, and with adjacent rectangular structures (14.1) being connected to and spaced from each other by spacers (20) of the same material. An interesting grid of channels (16) is thus defined between the rectangular structures (14.1). Thereafter a settable material is cast into the channels (16) and across the rectangular structures (14.1) and allowed to set. The concrete bonds to the pre-cast panels (14) and spacers (20) to form an integral composite foundation structure (10) that can be constructed relatively easily in problem soils.

Description

[0001] This invention relates to a composite foundation structure and a method of constructing such structure. [0002] In certain problem soil conditions, such as sandy, cobbly, clayey, gravely soil or the like, conventional so-called waffle raft foundations are relatively difficult to construct. The reason for this is that when digging a grid of intersecting trenches in such problem soil, the sidewalls of the trenches tend to collapse. OBJECT OF THE INVENTION [0003] It is accordingly an object of the present invention to provide a composite foundation structure and a method of constructing such structure with which the aforesaid disadvantage can be overcome or at least minimised. SUMMARY OF THE INVENTION [0004] According to a first aspect of the invention there is provided a method of constructing a composite foundation structure including the steps of: [0005] providing a plurality of panels; [0006] arranging the panels to provide shuttering defining a grid of intersecting channels ...

Claims

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Application Information

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IPC IPC(8): E02D27/02E04B1/00
CPCE02D27/02E02D2300/0051E02D2300/0018E02D2250/0023
Inventor PIDGEON, JOHN TERRY
Owner PIDGEON JOHN TERRY