US 9,556,581 B2Granted

Pile cap connectors

OwnerGlen G. Hale, Tim D. Fergusoninventors

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Abstract

Pile cap connectors are attached to pipe piles and are secured to an existing building so that the existing building is supported by an array of the deeply driven pipe piles which serve as the foundation for the building. Alternative pile cap connectors are length adjustable to span the distance between the top of the drill driven pipe piles and the underside of the lifted existing building. The pile cap connectors are an integral part of a method using low-overhead equipment to construct a deep piling foundation for an existing building where the method involves lifting the existing building to a predetermined elevation above grade and positioning cribbing stacks to support the existing building at the predetermined elevation above grade. The cribbing stacks are spaced from each other enabling low-overhead equipment to maneuver underneath the elevated building to drill drive the pipe piles at designated locations to provide optimal support for the building. Grout is pumped under pressure into the pipe piles continuously during the drill driving of the pipe piles so that grout exits through a grout port to mix with disturbed soil about the pipe pile to encase the pipe pile in a grout-soil mixture.

Claims8

Dependent claims

A pile cap connector for connecting a top end of a driven pipe pile to a support girder for a building, comprising:

a support plate having a top side, an underside, and a plurality of bolt holes;
a sleeve secured to the underside of the support plate;
at least one bolt for passing through at least one of the plurality of bolt holes;
at least one angle brace for securable disposition against the top side of the support plate, the at least one angle brace having at least one bolt receiving hole for receiving the at least one bolt and at least one anchor hole through which the at least one angle brace is securable to the support girder;
and
an extension for connection to the pipe pile and wherein the sleeve has an inside diameter that is greater than an outside diameter of the extension, the extension being disposable within the sleeve and is connectable to the pipe pile, the extension is length adjustable, the extension comprising:
a screw spindle having a head and a sliding support, the head being disposed within the sleeve;
an adjusting nut threadably engaging the screw spindle, the threading movement of the adjusting nut adjusts the length of the extension;
and
an extension shaft with an end plate having a central bore for receiving the screw spindle, and a pile receiving end connectable to the pipe pile, at least a portion of the extension shaft proximate the end plate being hollow and receiving the sliding support in sliding engagement.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/289,595Filed 28 May 2014 · continuation in part
Priority: 29 May 2013
Published: US 2014/0356075 A14 Dec 2014
Granted: 31 Jan 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

E02D 5/223
Piles: details of top sections of foundation piles
E02D 5/54
Piles: piles with prefabricated supports or anchoring parts; Anchoring piles
E02D 35/00
Straightening, lifting, or lowering of foundation structures or of constructions erected on
E02D
Foundations

Family

Application61/828,599Us provisional application · filed 29 May 2013
Application14/289,584Parent of this continuation-in-part · filed 28 May 2014
US 2014/0356076 A1Pre-grant publication · published 4 Dec 2014
US 2014/0356075 A1Published application
US 9,458,593 B2Related patent
US 9,556,581 B2This patent

From the US filing history. Foreign family members aren’t listed.