Pile anchor head for an underpinning pile and method of preloading the same

Inactive Publication Date: 2006-12-07
ONG CHIN CHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] Accordingly, an object of this present invention is to provide an efficient, simple and sure method in driving, lifting the foundation and at the sam

Problems solved by technology

Such method has weakness as continuing settlement can occur over a long period especially if the pile is deep.
In some cases, very cumbersome apparatus consisting of twin jacks or rams are used to react against the newly installed underpinning pile.
A further weakness in some systems lies in the use of many complicated small parts, which may deteriorate and thus be unable to carry a large load if any key mechanism is damaged by wear or rust.
The eccentricity of the floating piers 16 reduces the capacity of the pile and is a source of weakness due to shearing in the jack plate and bending in the pile.
This method is not

Method used

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  • Pile anchor head for an underpinning pile and method of preloading the same
  • Pile anchor head for an underpinning pile and method of preloading the same
  • Pile anchor head for an underpinning pile and method of preloading the same

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Embodiment Construction

[0031] Referring to the drawings, like numerals indicate like components to facilitate explanation. In order to differentiate two separate entities belonging to like components, a suffix ‘a’ or ‘b’ is used to denote the first or second entity respectively.

Components of the Assembly

[0032]FIG. 1 shows the components of an underpinning pile (1) according to one embodiment of the present invention. In the broadest aspect of the present invention, the underpinning pile (1) comprises a pile (12), a pile anchor head (11) and a lifting means for lifting the settling foundation. The pile (12) can be any kind of material and shape such as timber, concrete, ex-rail piles or steel pipes.

[0033] The pile anchor head (11) of the present invention is designed to have a rectangular body with a tabular hollow section (16) for accommodating the pile (12). The body is made from two L-sections joined back to back by side plates. Thus, flanges (13) are provided on opposite flat parallel surfaces at side

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Abstract

There is disclosed an underpinning pile to provide an efficient, simple and sure method in driving and lifting the foundation and at the same time securing the direct transference of preload without further loss of preload from the building into the newly completed driven pile. A pile anchor head (11) is provided that receives a pile (12) and is provided with a lifting means (13). The pile anchor head (11) and lifting means (13) receive the building load and transfers it to the pile (12), which allows practically any kind of material and shape of pile (12) to be used.

Description

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Claims

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Application Information

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Owner ONG CHIN CHAI
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