GB2632693A - Foundation Beam and Foundation Assembly - Google Patents

Foundation Beam and Foundation Assembly Download PDF

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Publication number
GB2632693A
GB2632693A GB2312594.1A GB202312594A GB2632693A GB 2632693 A GB2632693 A GB 2632693A GB 202312594 A GB202312594 A GB 202312594A GB 2632693 A GB2632693 A GB 2632693A
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GB
United Kingdom
Prior art keywords
foundation
foundation beam
void
primary support
central
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB2312594.1A
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GB202312594D0 (en
Inventor
Bullivant Simon
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB2312594.1A priority Critical patent/GB2632693A/en
Publication of GB202312594D0 publication Critical patent/GB202312594D0/en
Priority to IE20240480A priority patent/IE20240480A2/en
Publication of GB2632693A publication Critical patent/GB2632693A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E02D27/016—Flat foundations made mainly from prefabricated concrete elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/205—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members with apertured web, e.g. frameworks, trusses
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/22—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members built-up by elements jointed in line
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Revetment (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A foundation beam (2) for a foundation assembly having a plurality of spaced primary support members such as a pile (Fig. 3; 30, 32 and 34), wherein the foundation beam rests upon and spans a gap between respective primary support members, in use, said foundation beam comprising an upper support surface (6) for supporting a wall thereon, a vertical thickness and a lower surface (8) arranged to rest upon respective primary support members, in use, said foundation beam having a hollow central void (4) extending along the length thereof, said central void having a lowermost region (10) incorporating upwardly converging sides (12 and 14) to facilitate retention of a settable material therein.

Description

Foundation Beam and Foundation assembly
FIELD OF THE INVENTION
This invention relates to a foundation beam assembly for supporting a building, a foundation beam therefor and to a method of forming a foundation for supporting a building.
BACKGROUND OF THE INVENTION
The most commonly employed and traditional foundation structure for a building is a concrete foundation which is cast in situ by excavating a trench and casting concrete within the trench to define a stable support foundation upon which the walls of a building may be constructed. The formation of such cast in situ traditional foundation is a time consuming and labour intensive operation.
It has been proposed in the past to provide an alternative system by casting in situ a plurality of spaced primary support members and supporting on these members precast steel reinforced foundation beams extending between the primary support members and utilising the thus formed ring beam as a foundation for supporting the walls and floors of a building. Alternatively the primary support members may be in the form of precast piles that are driven into the ground before placing precast foundation beams onto pile caps located on top of each the pile to span the gaps between the pile caps.
The problem with using precast beams in this way is how to secure the beams to the pile caps and to one another and in particular how to ensure that steel reinforcement provided within each foundation beam, with the piles and within the pile caps, extends continuously through the finished foundation structure.
SUMMARY OF THE INVENTION
In accordance with a first aspect of the present invention there is provided a foundation beam for a foundation assembly having a plurality of spaced primary support members, wherein the foundation beam rests upon and spans a gap between respective primary support members, in use, said foundation beam comprising an upper support surface for supporting a wall thereon, a vertical thickness and a lower surface arranged to rest upon respective primary support members, in use, said foundation beam having a hollow central void extending along the length thereof, said central void having a lowermost region incorporating upwardly converging sides to facilitate the retention of a settable material therein.
Preferably said central hollow void further comprises an upper region above said to lowermost region, said upper region having a greater width than that of the lowermost region.
The central hollow void may have a continuous cross section along the length of the foundation beam In one embodiment said central hollow void may comprise a lower wall extending substantially parallel to the lower support surface of the foundation beam, a pair of upwardly converging first side wall portions extending upwardly from said lower wall, said lower wall and first side wall portions defining said lowermost region of the central hollow void, a pair of outwardly diverging second side wall portions extending from respective upper ends of said first side wall portions, a pair of third side wall portions extending substantially vertically from respective upper ends of said second side wall portions, and an upper wall extending between upper ends of said third side wall portions. The upper wall may have an inverted "V" or "U" shaped profile.
The central hollow void may be arranged symmetrically about a vertical plane aligned with an elongate axis of the foundation beam.
Bottom apertures may be formed in the lower support surface of the foundation beam adjacent each end of the foundation beam, said bottom apertures communicating with the central hollow void for insertion of reinforcement bars therethough. Side apertures may be formed in at least one outer side surface of the foundation beam adjacent each end of the foundation beam, said side apertures communicating with the central hollow void for insertion of reinforcement bars therethough.
The foundation beam may have an "I" shaped outer profile.
According to a further aspect of the present invention there if provided a foundation assembly for supporting a building comprising a plurality of spaced apart primary support members, a plurality of elongate foundation beams, each foundation beam spanning adjacent pairs of said primary support members, each foundation beam is in accordance with the first aspect of the invention, wherein a settable material, such as concrete or grout, is located in at least the lowermost region of the central hollow void in each foundation beam adjacent the distal ends thereof and extending between adjacent ends of the foundation beams in order to fix the foundation beams together.
Reinforcement elements may be located through the side and/or bottom apertures of each foundation beam to extend between adjacent foundation beams and/or between respective ends of the foundation beams and the primary support members upon which they rest, wherein said reinforcement elements are embedded in a settable material located in at least the lowermost region of the central hollow void in each foundation and through the respective side and bottom apertures thereof.
Each primary support member may comprise a pile, more preferably a precast 25 reinforced concrete pile. A pile cap may be located upon each pile, upon which the ends of respective foundation beams is supported. Each pile cap may comprise a precast element or may be cast in situ.
At least one respective reinforcement element may extend through an upper face of 30 each primary support member and through a bottom aperture in an adjacent end of the foundation beam supported thereon.
According to a further aspect of the present invention there is provided a method of forming a foundation for supporting a building comprising the steps of providing a plurality of spaced apart primary support members, locating a plurality of elongate foundation beams on said primary support members, each foundation beam spanning adjacent pairs of said primary support members, each foundation beam comprising an upper support surface for supporting a wall thereon, a vertical thickness and a lower surface arranged to rest upon respective primary support members, in use, said foundation beam having a hollow central void extending along the length thereof, said central void having a lowermost region incorporating upwardly converging sides, the method comprising locating the foundation beams upon the primary support members, locating a settable material, such as concrete or grout, between the ends of adjacent foundation beams to enter into at least the lowermost regions of the hollow central voids of the foundation beams, thus forming a stable interconnection between said foundation beams.
Bottom apertures may be formed in the lower support surface of the foundation beam adjacent each end of the foundation beam, said bottom apertures communicating with the central hollow void for insertion of reinforcement bars therethough, the method comprising the step of locating at least one respective reinforcement element extending through an upper face of each primary support member and through the bottom aperture in an adjacent end of the foundation beam supported thereon, said at least one respective reinforcement element being embedded in said settable material.
Side apertures may be formed in at least one outer side surface of the foundation beam adjacent each end of the foundation beam, said side apertures communicating with the central hollow void for insertion of reinforcement bars therethough, the method comprising the step of locating at least one respective reinforcement element extending through the side aperture in a first foundation beam and into the hollow central void of an adjacent second foundation beam, said at least one respective reinforcement element being embedded in said settable material.
BRIEF DESCRIPTION OF THE DRAWINGS
A foundation beam assembly in accordance with an embodiment of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:-Figure 1 is a transverse sectional view through a foundation beam of a foundation beam in accordance with an embodiment of the present invention; and Figures 2 to 4 illustrate the method of forming a foundation for supporting a building using the foundation beams of Figure 1.
DETAILED DESCRIPTION OF THE DRAWINGS
A foundation beam and foundation assembly in accordance an embodiment of the present invention is illustrated in Figures 1 to 4.
Figure 1 illustrates an end view of a foundation beam 2 in accordance with an embodiment of the present invention.
The foundation beam 2 comprises a steel reinforced elongate "I" profile beam having a hollow central void 4 having a continuous cross sectional profile extending along the length thereof. The foundation beam 2 has an upper support surface 6 for supporting a wall thereon, a vertical thickness and a lower surface 8 arranged to rest upon respective pile caps at each end of the beam 2, in use.
In the embodiment shown, the hollow central void 4 is defined by a lower wall 10 extending substantially parallel the lower support surface 8 of the beam 2, a pair of upwardly converging first side wall portions 12,14 extending upwardly from said lower wall 10, said lower wall 10 and first side wall portions 12,14 defining a lowermost region of the central hollow void 4, a pair of outwardly diverging second side wall portions 16,18 extending from respective upper ends of said first side wall portions 12,14, a pair of third side wall portions 20,22 extending substantially vertically from respective upper ends of said second side wall portions 16,18, and an inverted V shaped upper wall 24 extending between upper ends of said third side wall portions 20,22.
The upwardly converging sides (defined by said first side wall portions 12,14) of the lowermost region of the hollow central void 4 facilitate retention of a settable material, such as concrete or grout, therein, as will be described in more detail below, reducing the amount of such settable material required to fix adjacent foundation beams together and to an underlying pile cap.
Bottom apertures 26 are formed in the lower support surface 8 of the foundation beam adjacent each end of the foundation beam 2, said bottom apertures 26 communicating with the central hollow void 4 for insertion of reinforcement bars therethough. Side apertures 28 are formed in at least one outer side surface of the foundation beam 2 adjacent each end of the foundation beam, said side apertures 28 communicating with the central hollow void 4 for insertion of reinforcement bars therethough.
A foundation assembly and its method of assembly using the foundation beam of Figure 1 will now be described with reference to Figures 2 to 4.
In a first stage a plurality of precast steel reinforced concrete piles 30 are driven into 20 the ground at suitably spaced locations and a pile cap 32 is placed on an upper end of each pile 30. The pile caps 32 may comprise precast elements or may be cast in situ.
An upper surface of each pile cap 32 has a central aperture 34 for receiving a steel 25 reinforcement bar, as will be described below. Figure 2 shows a pile cap 32 located on top of a respective pile 30. Alternatively an end of a reinforcement rod may extend vertically out of a central region of the upper surface of each pile cap 32.
As illustrated in Figure 3, next, one end of a primary foundation beam 2A is located on top of the pile cap 32 with the bottom aperture 26 in the end of the primary foundation beam 2A aligned with the central aperture 34 in the pile cap 32 (or with the bottom aperture 26 located over a reinforcement bar extending upwardly from the pile cap 32).
A shown in Figure 4, a second foundation beam 2B may then be placed on the pile cap 32 adjacent the primary foundation beam 2A with an end face of said second foundation beam 2B abutting a side face of the primary foundation beam 2A.
A central reinforcement bar or pile bar 36 is then placed into the hollow central void 4 of the primary foundation beam 2B to pass through the bottom aperture 26 in the primary foundation beam 2A and into the central aperture 34 in the pile cap 32.
A "L" shaped reinforcement bar 38 may then be located in the central hollow void 4 of the primary foundation beam 2A to pass out of the side aperture 28 thereof and into the open end of the hollow central void 4 of the second beam 2B. The "L" shaped reinforcement bar 38 may be coupled to the adjacent pile bar 36, for example by being wrapped around the pile bar 36 and/or welded thereto.
A settable material, such as concrete or grout is then dispensed into the hollow central voids 4 of the primary and second foundation beams 2A,2B in the region of the pile cap 32 such that the settable material fills at least the lowermost region of each hollow central void 4 adjacent the respective ends of the beams 2A,2B, the pile bar 36 and "L" shaped reinforcement bar 38 becoming embedded in said
settable material.
The upwardly converging sides 12,14 of the lowermost portion of the hollow central void 4 of each beam 2A,2B ensures that the settable material becomes locked in place within the hollow central voids 4 of the beams 2A,2B when cured, without requiring the hollow central entire void 4 to be filled, reducing the amount of settable material (concrete or grout) required and speeding up curing time.
The invention is not limited to the embodiment described herein but can be amended or modified without departing from the scope of the present invention as 30 defined by the following claims.

Claims (17)

  1. CLAIMS1. A foundation beam for a foundation assembly having a plurality of spaced primary support members, wherein the foundation beam rests upon and spans a 5 gap between respective primary support members, in use, said foundation beam comprising an upper support surface for supporting a wall thereon, a vertical thickness and a lower surface arranged to rest upon respective primary support members, in use, said foundation beam having a hollow central void extending along the length thereof, said central void having a lowermost region incorporating 10 upwardly converging sides to facilitate retention of a settable material therein.
  2. 2. A foundation beam as claimed in claim 1, wherein said central hollow void further comprises an upper region above said lowermost region, said upper region having a greater width than that of the lowermost region.
  3. 3. A foundation beam as claimed in any preceding claim, wherein said central hollow void has a continuous cross section along the length of the foundation beam.
  4. 4. A foundation beam as claimed in any preceding claim, wherein said central hollow void comprises a lower wall extending substantially parallel to the lower support surface of the foundation beam, a pair of upwardly converging first side wall portions extending upwardly from said lower wall, said lower wall and first side wall portions defining said lowermost region of the central hollow void, a pair of outwardly diverging second side wall portions extending from respective upper ends of said first side wall portions, a pair of third side wall portions extending substantially vertically from respective upper ends of said second side wall portions, and an upper wall extending between upper ends of said third side wall portions.
  5. 5. A foundation beam as claimed in claim 4, wherein said upper wall has an 30 inverted V or U shaped profile.
  6. 6. A foundation beam as claimed in any preceding claim, wherein central hollow void is arranged symmetrically about a vertical plane aligned with an elongate axis of the foundation beam.
  7. 7. A foundation beam as claimed in any preceding claim, wherein bottom apertures are formed in the lower support surface of the foundation beam adjacent each end of the foundation beam, said bottom apertures communicating with the central 5 hollow void for insertion of reinforcement bars therethough.
  8. 8. A foundation beam as claimed in claim 7, wherein side apertures are formed in at least one outer side surface of the foundation beam adjacent each end of the foundation beam, said side apertures communicating with the central hollow void for 10 insertion of reinforcement bars therethough.
  9. 9. A foundation beam as claimed in any preceding claim, wherein the beam has an "I" shaped outer profile.
  10. 10. A foundation assembly for supporting a building comprising a plurality of spaced apart primary support members, a plurality of elongate foundation beams, each foundation beam spanning adjacent pairs of said primary support members, each foundation beam is in accordance with any of claims 1 to 9, wherein a settable material is located in at least the lowermost region of the central hollow void in each foundation beam adjacent the distal ends thereof and extending between adjacent ends of the foundation beams in order to fix the foundation beams together.
  11. 11. A foundation assembly as claimed in claim 10 when dependent up claim 8, wherein reinforcement elements are located through the side and/or bottom apertures of each foundation beam to extend between adjacent foundation beams and/or between respective ends of the foundation beams and the primary support members upon which they rest, wherein said reinforcement elements are embedded in a settable material located in at least the lowermost region of the central hollow void in each foundation and through the respective side and bottom apertures thereof.
  12. 12. A foundation assembly as claimed in claim 11, wherein each primary support member comprises a pile.
  13. 13. A foundation assembly as claimed in claim 12, wherein a pile cap is located upon each pile, upon which the ends of respective foundation beams is supported.
  14. 14. A foundation assembly as claimed in any of claims 11 to 13, wherein at least 5 one respective reinforcement element extends through an upper face of each primary support member and through a bottom aperture in an adjacent end of the foundation beam supported thereon.
  15. 15. A method of forming a foundation for supporting a building comprising the steps of providing a plurality of spaced apart primary support members, locating a plurality of elongate foundation beams on said primary support members, each foundation beam spanning adjacent pairs of said primary support members, each foundation beam comprising an upper support surface for supporting a wall thereon, a vertical thickness and a lower surface arranged to rest upon respective primary support members, in use, said foundation beam having a hollow central void extending along the length thereof, said central void having a lowermost region incorporating upwardly converging sides, the method comprising locating the foundation beams upon the primary support members, locating a settable material between the ends of adjacent foundation beams to enter into at least the lowermost regions of the hollow central voids of the foundation beams, thus forming a stable interconnection between said foundation beams.
  16. 16. A method as claimed in claim 15, wherein bottom apertures are formed in the lower support surface of the foundation beam adjacent each end of the foundation beam, said bottom apertures communicating with the central hollow void for insertion of reinforcement bars therethough, the method comprising the step of locating at least one respective reinforcement element extending through an upper face of each primary support member and through the bottom aperture in an adjacent end of the foundation beam supported thereon, said at least one respective reinforcement element being embedded in said settable material.
  17. 17. A method as claimed in claim 15 or claim 16, wherein side apertures are formed in at least one outer side surface of the foundation beam adjacent each end of the foundation beam, said side apertures communicating with the central hollow void for insertion of reinforcement bars therethough, the method comprising the step of locating at least one respective reinforcement element extending through the side aperture in a first foundation beam and into the hollow central void of an adjacent second foundation beam, said at least one respective reinforcement element being 5 embedded in said settable material.
GB2312594.1A 2023-08-17 2023-08-17 Foundation Beam and Foundation Assembly Pending GB2632693A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2312594.1A GB2632693A (en) 2023-08-17 2023-08-17 Foundation Beam and Foundation Assembly
IE20240480A IE20240480A2 (en) 2023-08-17 2024-08-14 Foundation Beam and Foundation assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2312594.1A GB2632693A (en) 2023-08-17 2023-08-17 Foundation Beam and Foundation Assembly

Publications (2)

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GB202312594D0 GB202312594D0 (en) 2023-10-04
GB2632693A true GB2632693A (en) 2025-02-19

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IE (1) IE20240480A2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1267348A (en) * 1997-07-21 2000-09-20 金中植 Structural member having metal shell reinforced by reinforcing plate
KR101174675B1 (en) * 2011-12-20 2012-08-21 에스에이치공사 Combination structure of precast concrete beam and precast concrete column
GB2534044B (en) * 2015-09-18 2016-12-28 Walwin Kent Building system
CN212153904U (en) * 2020-04-14 2020-12-15 机械工业第六设计研究院有限公司 Precast reinforced concrete beam structure
CN217151371U (en) * 2022-02-21 2022-08-09 央固工程科技（上海）有限公司 Structure for reinforcing variable cross section of beam
CN115853195A (en) * 2022-10-20 2023-03-28 江苏海洋大学 Prefabricated prestressed concrete hollow beam
CN219808583U (en) * 2023-04-27 2023-10-10 江苏海洋大学 A kind of prefabricated prestressed concrete composite beam
CN117027161A (en) * 2023-07-06 2023-11-10 宁波建工工程集团有限公司 UHPC inner flange Liang Ke column shell CFRP rib-steel reinforced concrete frame and construction method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1267348A (en) * 1997-07-21 2000-09-20 金中植 Structural member having metal shell reinforced by reinforcing plate
KR101174675B1 (en) * 2011-12-20 2012-08-21 에스에이치공사 Combination structure of precast concrete beam and precast concrete column
GB2534044B (en) * 2015-09-18 2016-12-28 Walwin Kent Building system
CN212153904U (en) * 2020-04-14 2020-12-15 机械工业第六设计研究院有限公司 Precast reinforced concrete beam structure
CN217151371U (en) * 2022-02-21 2022-08-09 央固工程科技（上海）有限公司 Structure for reinforcing variable cross section of beam
CN115853195A (en) * 2022-10-20 2023-03-28 江苏海洋大学 Prefabricated prestressed concrete hollow beam
CN219808583U (en) * 2023-04-27 2023-10-10 江苏海洋大学 A kind of prefabricated prestressed concrete composite beam
CN117027161A (en) * 2023-07-06 2023-11-10 宁波建工工程集团有限公司 UHPC inner flange Liang Ke column shell CFRP rib-steel reinforced concrete frame and construction method

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GB202312594D0 (en) 2023-10-04
IE20240480A2 (en) 2025-07-16

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