EP1405951A2 - Fondation coulée in situ avec un coffrage en béton - Google Patents

Fondation coulée in situ avec un coffrage en béton Download PDF

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Publication number
EP1405951A2
EP1405951A2 EP20030425613 EP03425613A EP1405951A2 EP 1405951 A2 EP1405951 A2 EP 1405951A2 EP 20030425613 EP20030425613 EP 20030425613 EP 03425613 A EP03425613 A EP 03425613A EP 1405951 A2 EP1405951 A2 EP 1405951A2
Authority
EP
European Patent Office
Prior art keywords
foundation
concrete
stirrups
reinforcement
outer slabs
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Withdrawn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
EP20030425613
Other languages
German (de)
English (en)
Other versions
EP1405951A3 (fr
Inventor
Giuseppe Minerva
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1405951A2 publication Critical patent/EP1405951A2/fr
Publication of EP1405951A3 publication Critical patent/EP1405951A3/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Withdrawn legal-status Critical Current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
    • E02D27/01—Flat foundations
    • E02D27/02—Flat foundations without substantial excavation

Definitions

  • the present finding relates to the building sector and in particular, it relates to a modular prefabricated foundation to be cast in place with a concrete casting.
  • Object of the present finding is that of proposing a modular prefabricated foundation which should allow the realisation of continuous foundations made of reinforced concrete with a considerable saving in terms of means, labour, scraps, and with a smaller number of processing operations compared to the current methods.
  • Another object of the finding is that of providing a modular prefabricated foundation which should allow the workers to operate safely, limiting the use of machines and obtaining a finished element having such quality as cannot be reached with current formworks, while at the same time ensuring a reduction of the costs both directly ascribable to the finished product and relating to the general costs incurred by any company when they have to create a continuous foundation.
  • each module or base element of the foundation comprises at least two parallel concrete elements, called outer slabs, a plurality of iron reinforcement stirrups arranged in parallel and at suitable distance from one another on planes orthogonal to the longitudinal axis of the outer slabs and each having the opposed sides buried in their concrete, a plurality or reinforcement rods buried longitudinally and for the entire length of the outer slabs, and means for applying belts, ropes, chains or the like for handling and laying the foundation on a lean concrete bed arranged in advance into the excavation.
  • the modular prefabricated foundation under discussion essentially comprises two parallel elements 11 made of concrete, called outer slabs, a plurality of iron reinforcement stirrups 12, each having a rectangular shape, arranged in parallel and at suitable distances from one another on planes orthogonal to the longitudinal axis of the outer slab, with the smaller sides 12' buried in concrete, a plurality of reinforcement rods 13 longitudinally buried in the outer slabs for their entire length and arranged at the tops of the reinforcement stirrups 12, and at least four anchoring elements 14, such as slots, bushes and the like, made of iron or steel, fastened in pairs to the internal sides of the outer slabs for handling and laying the prefabricated foundation by belts, ropes or chains provided with catch.
  • anchoring elements 14 such as slots, bushes and the like, made of iron or steel
  • the concrete outer slabs 11 have the main function of guaranteeing the necessary bar cover for the bearing reinforcement consisting of stirrups 12 and containing the concrete cast.
  • outer slabs 11 protrude from top and bottom of the reinforcement stirrups 12 so as to guarantee a suitable bar cover to the concrete that will be cast in the formwork.
  • the outer slabs are sized to stand the stresses exerted on the article, based on the exposure class relating to the environmental conditions of use of the foundation, from which the minimum covering to be ensured to the structural reinforcements, in compliance with the regulations in force, and the diameter of the reinforcement rods 13 buried therein, derive.
  • the reinforcement stirrups 12 are the connecting element between the two outer slabs 11, thereby ensuring the article's stiffness and dimensional stability, and at the same time, the foundation bearing reinforcement.
  • the diameter and step of stirrups 12 depend on the load weighing on the foundation, the size of the foundation, and the carrying capacity of the ground where the structure is laid.
  • the brackets can exhibit visual references useful during the laying in order to ensure a quick alignment of the foundation elements and an accurate insertion of any jutting rods for elevation walls resting on the foundation.
  • the diameter and number of longitudinal reinforcement rods 13 is determined on the basis of the carrying capacity of the ground on which the foundation lays, of the stirrup diameter and of the geometry of the masonry resting on the foundation itself.
  • the longitudinal rods of each element are longer than the element itself, so as to ensure the necessary superimposition length, as required by the technical regulations in force, with the longitudinal rods of the nearby elements.
  • the portion of rod 13' in excess of the outer slab length is bent at an angle of 100° towards the inside of the foundation.
  • the longitudinal rods have such diameter as to allow - once the adjacent elements have been laid - an easy straightening and superimposition of the same.
  • Feet 15 can be buried in the concrete of outer slabs 11 in order to guarantee - during the realisation of the foundation - a suitable and even bar cover to the stirrups and the reinforcement rods.
  • the foundation under discussion can also be provided with tie rods of iron or steel 16 that, attached in the plane of stirrups 12, during the handling, transport and laying steps strengthen the articles that due to their weight, size and geometry are not very steady, since the stiffness of the stirrups is not sufficient to ensure the stability of the foundation yet to be laid.
  • the prefabricated foundation under discussion is suitable for several applications, among which for example the creation of continuous foundations for bearing walls, boundary walls, reinforced concrete walls, the quick realisation of panel-holding foundation girders, tearing of foundations for retaining walls of any kind.
  • the prefabricated foundation proposed herein allows the creation of continuous foundations without using formworks and without creating and inserting the reinforcement cage, since the outer slabs of the prefabricated element acts as disposable formwork which at the same time ensures the necessary bar cover.
  • the reinforcement cage suitably sized on the basis of the ground and of the loads, is buried in the outer slabs, thereby ensuring dimensional stability to the article.
  • the foundation has a low weight, such as to allow handling and laying using simply cranes, telescopic arms or crane arms directly mounted on lorry. From the above description it is clear that using this article considerably easies and quickens the processing steps required to create a foundation compared to the conventional methods.
  • the advantages of the foundation proposed herein compared to the current art, as regards continuous foundations cast in place, are:

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  • 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)
  • Foundations (AREA)
  • Piles And Underground Anchors (AREA)
EP03425613A 2002-10-04 2003-09-22 Fondation coulée in situ avec un coffrage en béton Withdrawn EP1405951A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBS20020109U 2002-10-04
ITBS20020109 ITBS20020109U1 (it) 2002-10-04 2002-10-04 Fondazione prefabbricata modulare da integrare in opera con getto di calcestruzzo

Publications (2)

Publication Number Publication Date
EP1405951A2 true EP1405951A2 (fr) 2004-04-07
EP1405951A3 EP1405951A3 (fr) 2005-12-28

Family

ID=31986018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03425613A Withdrawn EP1405951A3 (fr) 2002-10-04 2003-09-22 Fondation coulée in situ avec un coffrage en béton

Country Status (2)

Country Link
EP (1) EP1405951A3 (fr)
IT (1) ITBS20020109U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109295864A (zh) * 2017-07-24 2019-02-01 东北林业大学 一种利用铰缝空间进行空心板抗剪加固结构及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174083A (en) * 1991-03-28 1992-12-29 Mussell Barry D Concrete slab forming system
NL1000773C2 (nl) * 1995-07-11 1997-01-22 Isobouw Systems Bv Funderingssysteem.
FR2754285A1 (fr) * 1996-10-03 1998-04-10 Ktbat Element de coffrage isolant pour mur en beton

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174083A (en) * 1991-03-28 1992-12-29 Mussell Barry D Concrete slab forming system
NL1000773C2 (nl) * 1995-07-11 1997-01-22 Isobouw Systems Bv Funderingssysteem.
FR2754285A1 (fr) * 1996-10-03 1998-04-10 Ktbat Element de coffrage isolant pour mur en beton

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109295864A (zh) * 2017-07-24 2019-02-01 东北林业大学 一种利用铰缝空间进行空心板抗剪加固结构及方法
CN109295864B (zh) * 2017-07-24 2023-10-31 东北林业大学 一种利用铰缝空间进行空心板抗剪加固结构及方法

Also Published As

Publication number Publication date
EP1405951A3 (fr) 2005-12-28
ITBS20020109U1 (it) 2004-04-05

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