EP1116829A2 - Dalle de fondation - Google Patents

Dalle de fondation Download PDF

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Publication number
EP1116829A2
EP1116829A2 EP01300322A EP01300322A EP1116829A2 EP 1116829 A2 EP1116829 A2 EP 1116829A2 EP 01300322 A EP01300322 A EP 01300322A EP 01300322 A EP01300322 A EP 01300322A EP 1116829 A2 EP1116829 A2 EP 1116829A2
Authority
EP
European Patent Office
Prior art keywords
concrete
formwork
frame
raft
downstand
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Withdrawn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
EP01300322A
Other languages
German (de)
English (en)
Other versions
EP1116829A3 (fr
Inventor
Paul Kiss
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.)
Abbey Pynford Holdings Ltd
Original Assignee
Abbey Pynford Holdings Ltd
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
Application filed by Abbey Pynford Holdings Ltd filed Critical Abbey Pynford Holdings Ltd
Publication of EP1116829A2 publication Critical patent/EP1116829A2/fr
Publication of EP1116829A3 publication Critical patent/EP1116829A3/fr
Withdrawn legal-status Critical Current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
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E02D27/14—Pile framings, i.e. piles assembled to form the substructure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/04—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for structures of spherical, spheroid or similar shape, or for cupola structures of circular or polygonal horizontal or vertical section; Inflatable forms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/04—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for structures of spherical, spheroid or similar shape, or for cupola structures of circular or polygonal horizontal or vertical section; Inflatable forms
    • E04G11/045—Inflatable forms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs

Definitions

  • This invention relates to a structure for use in, and a method for, constructing a concrete foundation raft or low level beam and, in particular, to foundation rafts or beams which are spaced from the ground.
  • a collapsible or crushable spacer made for example of hardboard, cardboard, and/or polystyrene has been used as a temporary support. Once the foundation raft or beam has been constructed, these spacers either degrade or are designed to compress with any uplift of the ground. Generally these techniques are expensive. Collapsible material can collapse prematurely, particularly in wet weather, and compressible spacers require extra space to avoid the transmission of heave to the raft to the crushed material.
  • GB 2329651A we suggested a method of constructing a concrete foundation raft or low level beam for a building or other superstructure comprising erecting formwork, which is held spaced above the ground by at least one interposed waterproof bag that is inflated with water or other liquid, pouring concrete in the formwork to form the raft or beam and, when the concrete has set, removing the water from the bag(s) to allow the bag(s) to collapse leaving a void between the underside of the raft or beam and the ground.
  • a method of constructing a concrete foundation raft or low level beam for a building or other superstructure comprises the steps of:
  • the frame is constructed of a metal, such as steel, so that the concrete is substantially reinforced.
  • the frame may be supported on the piles and, preferably, the formwork comprises a deck which is tied to the frame to prevent downward movement at the midpoints of the deck between the piles.
  • the outer edges of the deck may be cut to the exact shape of the property and to accommodate one or more downstand units.
  • the reinforcement is fixed and the one or more downstand units can be positioned at the edge of the decking and may then be secured to the reinforcement and/or the frame.
  • the one or more downstand units provide support for edge shutters which are attached to the formwork. Once the edge shutters are in place, the concrete can then be poured.
  • the frame ensures that any void between the formwork and the ground can be kept completely clear during construction while ensuring that the formwork is securely supported. As there is no direct support between the ground and the formwork, this method can be used when the ground is uneven.
  • the provision of downstand units ensures that the sides of the formwork are supported and provide convenient attachment for the edge shutters. Additionally, the frame provides reinforcement to the concrete and means that additional reinforcement may not be needed. Of course, further reinforcement may be added if required.
  • a frame for use in constructing a concrete foundation raft or low level beam for a building or other superstructure comprises at least one pair of elongate tubes, comprising a first and a second tube, which are arranged to be connected, in use, to a deck;
  • a method of constructing a concrete foundation raft or low level beam for a building or other superstructure comprises the steps of:
  • the bags can be filled and emptied more quickly and easily.
  • the bag(s) can be used together with one or, more usually, a pair of formers which are preferably formed from timber. These formers permit the size of the void to be increased without the need for various differently sized bags.
  • a foundation raft 1 comprises a deck 2 and a frame 3, both of which are supported by a number of piles 4.
  • the piles 4 have been preformed in the ground 5 and the uppermost section of the piles is of a greater diameter to the remainder of the pile.
  • the piles 4 support the foundation raft 1 away from the ground, thus creating a void 7 which can accommodate potential ground heave.
  • a number of spacers 8 are provided between the frame 3 and the deck 2.
  • the frame and deck are connected together through the spacers 8.
  • the spacers are usually formed from concrete and are provided to ensure that, as the concrete 9 is poured, it can flow around the underside of the frame and fully surround the lower part of the frame. Concrete 9 is poured onto the deck 2 and surrounds the frame and any additional reinforcement 10 which may be required.
  • First 11 and second 12 members are horizontally spaced and substantially parallel to each other. They lie on the upper surface of a series of spacers 8.
  • a third elongate member 13 is spaced from the first and second members to form, in section, a triangular arrangement.
  • the first 11 and second 12 members are connected to the third member 13 by members 14 to create the framework 3.
  • This framework 3 is then connected to the spacers 8 and the deck 2 by means of ties 15. This tying connection can be clearly seen in Fig. 3.
  • Figures 4 and 5 show the arrangement at the one edge of the formwork 1 and show the provision of downstand units 20.
  • the downstand unit 20 may be formed from concrete and it is connected to the reinforcement 10 via a steel connecting arm 21.
  • the downstand unit 20 is connected to the reinforcement 10 prior to pouring the concrete 9.
  • the downstand unit 20 is placed on a temporary support 22 during construction and this temporary support may be removed on completion of the construction.
  • a wall 23 is provided to prevent the ground 5 migrating to the underside of the downstand units.
  • the downstand unit 20 is provided with a step 24 which supports a series of pre-cast beams 25.
  • the beams in turn support the outer skin of brickwork 26 and 27, including air bricks 28.
  • the inner skin of brickwork 29 is supported directly on the raft itself and a damp proof membrane 30 is incorporated within the inner 29 and outer 27 courses of brickwork.
  • Temporary shuttering 31 is provided and is secured to the downstand unit 20 by support detail 32. Bolts 33 can be removed to allow the removal of the shutter support 32 and then the main shutter 31 which spans adjacent units.
  • the temporary shutters 31 are of sufficient height to form a raised boundary to the foundation raft to ensure that the concrete can be poured to the required depth. Once these edge shutters 31 are in place, the concrete 9 can then be poured.
  • An air void 34 is provided between the outer skin of brickwork 26 and the downstand unit 20 or concrete 9. This is vented to the atmosphere through air bricks 28.
  • Figure 6 shows an alternative foundation raft 50 consisting of a reinforced concrete slab 50 supporting building walls 51 and itself supported by piles 52.
  • the piles are first put down and the slab is integrated with pile caps.
  • a void 53 spaces the bottom of the slab 50 from the ground 54.
  • Figure 7 indicates in vertical section how the void 53 might be created.
  • decking 55 forming the bottom wall of formwork is spaced above a layer of blinding 56 on the ground 54 by an array of tubular bags 57, which may be laid out as seen in plan in Figure 9.
  • each bag 57 has a closed end 58 and, at its opposite end, is connected to a hose 59 leading to a terminal 60, or a common terminal 60a in Figure 9, containing a non return valve and a tap.
  • the hose may be a canvas hose similar to a fireman's hose.
  • a pump could be connected to the block 60 to inflate the respective bag.
  • the hose 59 could be used to pull the bag from the void after use.
  • Figure 10 shows a bag 57 with a coupling device 61 having its wider, oval shaped end inserted in the end of the bag opposite the closed end 58.
  • the size of the largest part of the coupling device can pass through a 225mm x 75mm hole.
  • the coupling device has a narrow inlet/outlet tube 62 extending away from the bag. The tube can be connected to the hose.
  • the substantially tubular bag connected to the hose, and preferably provided with the non-return valve and tap, forms an independent feature of the invention.
  • Figure 11 shows the provision of a pair of timber formers 61 comprising a main body 63 and a pair of longitudinally extending raised portions 62.
  • the bag 57 sits between the pair of formers 61 and is shown in the fully inflated configuration.
  • the formers increase that the shown size of the void 53 between the decking 55 and the blinding 56.
  • each former has a different depth such that the size of the void can be varied between separate applications or to accomodate inconsistencies in the ground surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Foundations (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP01300322A 2000-01-17 2001-01-16 Dalle de fondation Withdrawn EP1116829A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0001039.7A GB0001039D0 (en) 2000-01-17 2000-01-17 Improvements relating to foundation rafts
GB0001039 2000-01-17

Publications (2)

Publication Number Publication Date
EP1116829A2 true EP1116829A2 (fr) 2001-07-18
EP1116829A3 EP1116829A3 (fr) 2002-04-10

Family

ID=9883844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01300322A Withdrawn EP1116829A3 (fr) 2000-01-17 2001-01-16 Dalle de fondation

Country Status (2)

Country Link
EP (1) EP1116829A3 (fr)
GB (1) GB0001039D0 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1310601A2 (fr) 2001-11-12 2003-05-14 Abbey Pynford Holdings plc Dalle de fondation
EP1375756A1 (fr) * 2002-06-12 2004-01-02 AL-FER S.r.l. Procédé pour égaliser des phénommènes de tassement
CN104746870A (zh) * 2015-01-23 2015-07-01 中国建筑第八工程局有限公司 建筑主体外立面的弧形装饰件的施工方法
CN112443342A (zh) * 2020-12-22 2021-03-05 中铁五局集团成都工程有限责任公司 一种岩溶发育长大隧道特大溶洞处理施工方法
CN113931212A (zh) * 2021-11-25 2022-01-14 中铁四院集团西南勘察设计有限公司 一种用于有轨电车的路桥过渡段结构及其施工方法
CN117721683A (zh) * 2024-01-11 2024-03-19 天津大学 一种路堤自主抬升调控装置及方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2329651A (en) 1997-09-11 1999-03-31 Subsidence Surveys Limited An inflatable foundation formwork support

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR866943A (fr) * 1940-05-17 1941-09-18 Instrument gyroscopique
FR951194A (fr) * 1947-07-31 1949-10-18 Nouveau procédé de construction
DE814936C (de) * 1950-03-23 1951-09-27 Bruno Zeidler Bewehrung fuer die Rippen von Stahlbeton-Rippendecken
DE3410484A1 (de) * 1983-05-20 1985-10-03 Bernhard 7613 Hausach Künstle Deckenelement
DE3434531A1 (de) * 1984-09-20 1986-03-27 Ernst Konrad 6556 Wöllstein Jungk Bewehrter deckentraeger
DE4031406A1 (de) * 1990-10-04 1992-04-09 Habitatio Alter Verfahren zum erstellen eines zumindest eingeschossigen gebaeudes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2329651A (en) 1997-09-11 1999-03-31 Subsidence Surveys Limited An inflatable foundation formwork support

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1310601A2 (fr) 2001-11-12 2003-05-14 Abbey Pynford Holdings plc Dalle de fondation
EP1310601A3 (fr) * 2001-11-12 2003-10-08 Abbey Pynford Holdings plc Dalle de fondation
EP1375756A1 (fr) * 2002-06-12 2004-01-02 AL-FER S.r.l. Procédé pour égaliser des phénommènes de tassement
CN104746870A (zh) * 2015-01-23 2015-07-01 中国建筑第八工程局有限公司 建筑主体外立面的弧形装饰件的施工方法
CN112443342A (zh) * 2020-12-22 2021-03-05 中铁五局集团成都工程有限责任公司 一种岩溶发育长大隧道特大溶洞处理施工方法
CN113931212A (zh) * 2021-11-25 2022-01-14 中铁四院集团西南勘察设计有限公司 一种用于有轨电车的路桥过渡段结构及其施工方法
CN117721683A (zh) * 2024-01-11 2024-03-19 天津大学 一种路堤自主抬升调控装置及方法

Also Published As

Publication number Publication date
EP1116829A3 (fr) 2002-04-10
GB0001039D0 (en) 2000-03-08

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