EP1526220A1 - Vorrichtung zum Unterstützen in Baukonstruktionen - Google Patents

Vorrichtung zum Unterstützen in Baukonstruktionen Download PDF

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Publication number
EP1526220A1
EP1526220A1 EP04256526A EP04256526A EP1526220A1 EP 1526220 A1 EP1526220 A1 EP 1526220A1 EP 04256526 A EP04256526 A EP 04256526A EP 04256526 A EP04256526 A EP 04256526A EP 1526220 A1 EP1526220 A1 EP 1526220A1
Authority
EP
European Patent Office
Prior art keywords
support
structural element
restraint
trench
excavation
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.)
Withdrawn
Application number
EP04256526A
Other languages
English (en)
French (fr)
Inventor
Mark Pearson
John Hislam
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Applied Geotechnical Engineering Ltd
Applied Geotechnical Engineering and Construction Inc
Original Assignee
Applied Geotechnical Engineering Ltd
Applied Geotechnical Engineering and Construction Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB0324760A external-priority patent/GB0324760D0/en
Priority claimed from GB0400690A external-priority patent/GB0400690D0/en
Application filed by Applied Geotechnical Engineering Ltd, Applied Geotechnical Engineering and Construction Inc filed Critical Applied Geotechnical Engineering Ltd
Publication of EP1526220A1 publication Critical patent/EP1526220A1/de
Withdrawn legal-status Critical Current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
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits

Definitions

  • the invention relates to an apparatus for providing support in building construction, particularly in construction involving excavation below ground level.
  • a temporary or permanent earthworks support system when excavating below ground level.
  • This may be in the form of a wall of, for example, trench or sheet pile, kingpost, contiguous secant bored piled or diaphragm construction. Excavation then takes place whilst progressively installing, as necessary, support to the wall either as internal props (frames) or external ground anchors.
  • the present invention provides apparatus for providing support in building construction, the apparatus comprising a structural element, a support and means for connecting the support to the structural element.
  • the apparatus may be pre-engineered, and then transported to the excavation site.
  • the support may be permanently connected to the structural element.
  • the support may be detachably connected to the structural element. It will then be possible to connect the support to the structural element on site before insertion of the apparatus in the trench, thereby facilitating transport of the apparatus. It will also be possible to remove the support after excavation, and replace it with a permanent support such as a floor which may be cast to the structural element.
  • the support may be pivotally connected to the structural element. This also facilitates transport of the apparatus, especially where the support is not detachably connected to the structural element.
  • the apparatus may comprise a plurality of means for connecting the support to the structural element, the means being positioned such that the support can be connected at different levels on the structural element. It will then be possible to select the position of the support according to requirements. Where the support is detachable, this may be done on site.
  • the apparatus may comprise means for connecting the support to a first restraint. This will facilitate connection of the support to the restraint, and will provide a more secure connection than simply casting the support to the restraint.
  • the first restraint may comprise a floor slab or beam or an opposing wall panel or any suitable structural restraint.
  • the apparatus may comprise means for connecting the support to a second restraint to reduce the forces on the first restraint.
  • the second restraint may comprise a pile.
  • the support may comprise a secondary support, and means for connecting the secondary support to the structural element or to a restraint. This will provide additional support.
  • the support may comprise any suitable structural member.
  • the support may comprise a truss or frame.
  • the truss or frame may be rigid or may be of hinged construction so allowing it to be opened up after insertion of the apparatus in the trench, thereby facilitating transport.
  • the structural element may comprise means for connecting the structural element to a restraint. These means may be in the form of locating joints.
  • the structural element may be any element used in construction.
  • the structural element may be a wall panel or a kingpost.
  • the structural element may comprise means for connecting the element to another structural element. These means could be in the form of joints, dowels or prestressed tendons in suitably located ducts.
  • a support may not be required on each element as adjacent elements may provide sufficient support. For example, a support may be provided on alternate elements.
  • the structural elements may be of different width and/or thickness, and at least one of the elements may comprise a recess for receiving a prop.
  • the invention further provides a method of providing support in building construction, the method comprising the steps of excavating a trench, inserting an apparatus according to the invention into the trench, connecting the support to a restraint, and carrying out excavation.
  • the support may be positioned on either side of the structural element.
  • the support may be positioned on the same side of the structural element as the excavation.
  • the drawings show an apparatus 1 for providing support in building construction, the apparatus 1 comprising a structural element (wall panel) 2, a support 3 and means 4 for connecting the support to the structural element.
  • the wall panel 2 is made of precast reinforced concrete, but may be made of any suitable material.
  • the wall panel 2 may have an integral beam or thickening at the lower propping levels to assist load spreading and wall panel strength.
  • the wall panel 2 may also have locating joints at its edges to assist connection between the panel and a floor slab. The edges and/or joints may have preformed grout ducts to allow post-grouting of joints.
  • the support 3 is made of metal, but may be made of any suitable material.
  • the support 3 is attached to the wall panel 2 at a predetermined level, and comprises a strut, which is detachably connected to the wall panel 2 at one end by a hinge 4 so that the support 3 can be pivoted with respect to the wall panel 2.
  • the support 3 includes a bracket 5 at its other end for connecting the support 3 to a first restraint which comprises a floor slab 6. Any suitable means may be used for connecting the support 3 to the wall panel 2 and floor slab 6. These means may be used for other purposes after removal of the support, for example, for the attachment of barriers or fenders.
  • Figure 1 - shows the apparatus 1 before insertion into an elongate trench 7, which has been excavated to a length and depth which is sufficient to accommodate the wall panel 2, and then filled with fresh slurry. Open trench excavation or any other suitable method may also be used. Guide walls may be used to improve accuracy of line and/or level.
  • the support 3 may also have means for assisting location of the wall panel 2 in the trench 7 such as skid panels attached to the inner (excavation) sides of the support 3.
  • Figure 2 shows the apparatus 1 after insertion into the elongate trench 7.
  • a second elongate trench 8 has been excavated at right angles to the elongate trench 7 such that the combined trenches 7, 8 form a "T".
  • the second trench 8 may be excavated at the same time as the first trench 7, or, alternatively, may be excavated after insertion of the apparatus 1 in the first trench 7.
  • the support 3 is pivoted away from the wall panel 2 to a predetermined angle. Any suitable angle may be selected in both elevation and plan. This may be done either before or after the slurry has set.
  • Figure 3 shows the apparatus 1 after installation of the floor slab 6.
  • the support 3 has been connected to the floor slab 6 by means of the bracket 5.
  • Figure 4 shows the apparatus 1 after bulk excavation has taken place to below the level of the support 3.
  • Figure 5 shows the apparatus 1 after installation of a permanent internal support 9, which comprises a cast slab.
  • Figure 6 shows the apparatus 1 after removal of the temporary support 3.
  • the embodiment shown in Figures 7 to 11 is the same as the embodiment shown in Figures 1 to 6 except that it includes a second restraint, which comprises a pile 10.
  • the pile 10 is made of steel, but may be made of any suitable material.
  • Figure 7 corresponds to Figure 1, except that the pile 10 has been inserted into a bore 11, which is positioned such that when the support 3 is pivoted away from the wall panel 2 to its predetermined angle, the free end of the support 3 will meet the upper end of the pile 10.
  • FIG 8 corresponds to Figure 2, except that the free end of the support 3 has been connected to the upper end of the pile 10. Any suitable means may be used for connecting the support 3 to the pile 10.
  • FIG 9 corresponds to Figure 3, except that the floor slab 6 has been connected to the pile 10 as well as to the support 3. Any suitable means may be used for connecting the pile 10 to the floor slab 6.
  • Figure 10 corresponds to Figure 4
  • Figure 11 corresponds to Figure 6.
  • the pile 10 provides tensile resistance to the out of balance vertical forces induced by the support 3 at the point where it connects with the floor slab 6.
  • the pile 10 can be left in position after bulk excavation so that it provides permanent vertical support to the floor slab 6 and the rest of the structure, or it can be removed.
  • Figure 12 shows a structural element 12 which may be used instead of the wall panel 2.
  • the structural element 12 includes a central pier 13 and two intermediate panels 14 on either side of the pier 13.
  • the pier 13 is wider and thicker than the panels 14, and is designed to carry the combined forces applied to the pier 13 and panel 14.
  • the pier 13 includes a cut-out 15 at its lower end for receiving a prop 16.
  • the prop 16 holds the pier 13 in place prior to excavation.
  • the panels 14 may also be held in place by props.
  • the pier 13 also includes a cut-out 17 on either side for receiving a corresponding projection 18 on each of the panels 14 in a sliding joint.
  • the pier 13 assists with initial locational accuracy in the trench.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
EP04256526A 2003-10-23 2004-10-22 Vorrichtung zum Unterstützen in Baukonstruktionen Withdrawn EP1526220A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0324760A GB0324760D0 (en) 2003-10-23 2003-10-23 Apparatus for providing support in building construction
GB0324760 2003-10-23
GB0400690A GB0400690D0 (en) 2004-01-13 2004-01-13 Apparatus for providing support in building construction
GB0400690 2004-01-13

Publications (1)

Publication Number Publication Date
EP1526220A1 true EP1526220A1 (de) 2005-04-27

Family

ID=34395454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04256526A Withdrawn EP1526220A1 (de) 2003-10-23 2004-10-22 Vorrichtung zum Unterstützen in Baukonstruktionen

Country Status (1)

Country Link
EP (1) EP1526220A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1484543A1 (de) * 1964-03-24 1969-05-22 Roechlingsche Eisen & Stahl Stuetzwaende fuer tiefbauliche Anlagen
US3490242A (en) * 1968-03-07 1970-01-20 Harry Schnabel Jr Method and structure for reinforcing an earthen excavation
JPH09264024A (ja) * 1996-03-29 1997-10-07 Kawasaki Steel Corp 土留め又は締切り工事方法
EP0803613A1 (de) * 1996-04-23 1997-10-29 Jan Forster Verfahren zum Einbringen einer Wand in einen Boden
JPH10159094A (ja) * 1996-11-30 1998-06-16 Kumagai Gumi Co Ltd 山留め壁の支保構造
FR2822172A1 (fr) * 2001-03-13 2002-09-20 Spie Fond S Dispositif d'etayage d'une paroi de soutenement de fouille et utilisation d'un tel dispositif
US20020159844A1 (en) * 2000-05-11 2002-10-31 Meyer John H. Corner connection for temporary shoring

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1484543A1 (de) * 1964-03-24 1969-05-22 Roechlingsche Eisen & Stahl Stuetzwaende fuer tiefbauliche Anlagen
US3490242A (en) * 1968-03-07 1970-01-20 Harry Schnabel Jr Method and structure for reinforcing an earthen excavation
JPH09264024A (ja) * 1996-03-29 1997-10-07 Kawasaki Steel Corp 土留め又は締切り工事方法
EP0803613A1 (de) * 1996-04-23 1997-10-29 Jan Forster Verfahren zum Einbringen einer Wand in einen Boden
JPH10159094A (ja) * 1996-11-30 1998-06-16 Kumagai Gumi Co Ltd 山留め壁の支保構造
US20020159844A1 (en) * 2000-05-11 2002-10-31 Meyer John H. Corner connection for temporary shoring
FR2822172A1 (fr) * 2001-03-13 2002-09-20 Spie Fond S Dispositif d'etayage d'une paroi de soutenement de fouille et utilisation d'un tel dispositif

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 02 30 January 1998 (1998-01-30) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30) *

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