FR2798150A1 - Building foundation consolidation system consists of pumping mortar through tubes in lengthwise beam to fill gaps caused by ground movement - Google Patents

Building foundation consolidation system consists of pumping mortar through tubes in lengthwise beam to fill gaps caused by ground movement Download PDF

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Publication number
FR2798150A1
FR2798150A1 FR9911161A FR9911161A FR2798150A1 FR 2798150 A1 FR2798150 A1 FR 2798150A1 FR 9911161 A FR9911161 A FR 9911161A FR 9911161 A FR9911161 A FR 9911161A FR 2798150 A1 FR2798150 A1 FR 2798150A1
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tubes
tube
sill
sole
groups
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FR9911161A
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FR2798150B1 (en
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Atighechi Alain Tabatabai
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D35/00Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/34Foundations for sinking or earthquake territories

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Foundations (AREA)

Abstract

The system, for use when gaps appear beneath the foundations of a building as a result of ground movements, consists of pumping mortar (6) into the gaps through tubes (3) inserted through a lengthwise beam (2) on which the foundation foot (1) is laid. The tubes are set in groups, with the tubes in each group no more than 50 cm apart, and the mortar is pumped in through one tube in each group e.g. at a pressure of two bars until the gap and tube are filled. Should further gaps appear after a period of some years more mortar can be pumped in through other tubes in the groups, which can be built into the foundations of new buildings.

Description

F<U>ondation bâtiment et procédé e consolidation d'une fondation de</U> type <U>semelle filante</U> La présente invention se rapporte aux fondations de bâtiments et aux procédés consolidation de ces fondations. Dans les sols argileux, sous l'effet de la sécheresse et/ou d'une réhydratation, il se produit souvent en dessous des fondations superficielles des bâtiments un tassement ou un gonflement du sol. La semelle de fondation n'étant pas prévue pour encaisser un tassement différentiel important, elle fléchit ou elle se fissure et la superstructure se lézarde. FIELD OF THE INVENTION The present invention relates to the foundations of buildings and to the methods of consolidating these foundations. In clay soils, under the effect of drought and / or rehydration, soil subsidence or swelling often occurs below the surface foundation of buildings. The foundation sole is not designed to cash a significant differential settlement, it flexes or cracks and the superstructure cracks.

Un procédé connu de confortation des fondations superficielles bâtiment ayant subi un tassement consiste à descendre les charges de celui-ci sur des couches suffisamment profondes capables de reprendre le poids de la construction moins sensibles à la variation de la teneur en eau. Cette reprise en sous-oeuvre se fait par des pieux travaillant par frottement latéral. Ces pieux sont liaisonnés par une longrine de distribution des charges. Elle est réalisée sous semelle de la fondation existante et intègre la tête des pieux. Ce procédé est efficace, mais il est coûteux. A known method of comforting the building foundations having undergone a settlement consists in lowering the loads of the latter on sufficiently deep layers able to take up the weight of the building less sensitive to the variation of the water content. This recovery in under-work is done by piles working by lateral friction. These piles are linked by a load distribution sill. It is made under the foundation of the existing foundation and integrates the head of the piles. This method is effective, but it is expensive.

L'invention vise une fondation de bâtiment consolidée et un procédé de consolidation d'une fondation qui nécessite moins de travaux que le procédé antérieur. Ce procédé pourra également être mis en oeuvre dès la construction du bâtiment. The invention relates to a consolidated building foundation and a method of consolidating a foundation that requires less work than the previous method. This process can also be implemented from the construction of the building.

L'invention a donc pour objet une fondation de bâtiment comprenant une semelle dont la face inférieure est en contact avec la face supérieure d'une longrine traversée de haut en bas par au moins un tube dans lequel se trouve des moyens de consolidation. Suivant l'invention, les moyens de consolidation sont constitués d'un coulis qui s'étend d'un seul tenant dans le tube et sous la longrine en étant en contact avec sa face inférieure. The invention therefore relates to a building foundation comprising a sole whose lower face is in contact with the upper face of a sill traversed from top to bottom by at least one tube in which there is consolidation means. According to the invention, the consolidation means consist of a slurry which extends in one piece in the tube and under the sill being in contact with its lower face.

On n'a plus ainsi à réaliser de pieux pour transmettre les charges du bâtiment à des horizons profonds moins sensibles à la variation de la teneur en eau. II suffit maintenant de couler coulis par les tubes, de préférence régulièrement répartis de manière à assurer des appuis à la longrine, pour obtenir la consolidation souhaitée. Piles are no longer required to transmit building loads to deeper horizons that are less sensitive to changes in moisture content. It suffices now to pour grout by the tubes, preferably regularly distributed so as to provide support to the sill, to achieve the desired consolidation.

Lorsque le mortier qui est coulé par le tube arrive jusqu'au tube, on sait que le vide se trouvant sous la longrine a été comblé. De préférence, on injecte le mortier sous pression, par exemple sous une pression au moins égale à 2 bar. When the mortar which is poured by the tube reaches the tube, it is known that the void under the sill has been filled. Preferably, the mortar is injected under pressure, for example under a pressure at least equal to 2 bar.

Dans le cas d'un bâtiment neuf, on peut prévoir d'emblée que la semelle soit traversée par des tubes, la semelle et la longrine devant être alors considérées comme d'un seul tenant étant prévu en tant que poutre sur appui. In the case of a new building, it can be provided from the outset that the soleplate is traversed by tubes, the sole and the sill to be considered as a single piece being provided as a beam on support.

De préférence, il est prévu au moins un groupe de tubes et l'on coule du coulis d'abord dans le premier tube groupes, puis ultérieurement, par exemple une année après, dans le deuxième tube des groupes après avoir perforé le mortier coulé en regard du deuxième tube. Preferably, at least one group of tubes is provided and the grout is poured first into the first tube groups, then later, for example one year later, into the second tube of the groups after having perforated the cast mortar. look at the second tube.

L'invention vise enfin une fondation de bâtiment comprenant une semelle, caractérisée par des groupes tubes traversant la semelle de haut en bas, la distance entre deux tubes dans un même groupe étant inférieure à 50 cm. The invention finally relates to a building foundation comprising a soleplate, characterized by groups tubes through the sole from top to bottom, the distance between two tubes in the same group being less than 50 cm.

La figure 1 du dessin annexé une vue en coupe partielle d'une fondation de bâtiment suivant l'invention, tandis que la figure 2 en est une vue en plan partiel. Figure 1 of the accompanying drawing a partial sectional view of a building foundation according to the invention, while Figure 2 is a partial plan view.

La fondation de bâtiment B représentée aux figures comporte une semelle 1 dont la face inférieure est en contact avec la face supérieure d'une longrine 2 en forme de L en béton armé. Dans la branche verticale du L s'étendent, parmi d'autres triplets, côte à côte et à moins de 20 cm les uns des autres trois tubes 3 qui traversent toute la grande branche du L en débouchant sur la face inférieure de la longrine et en haut au niveau du sol S. La figure 2 montre que les tubes 3 sont répartis en groupes a, b, c, d ... n de trois tubes. Le tube 3 est bouché en haut par un bouchon 4 fileté et est protégé par un revêtement 5 de protection. Le tube 3 est empli de coulis 6 sans retrait, d'un seul tenant avec une masse de mortier qui comble un vide qui s'est créé dans le sol en dessous la longrine 2. The building foundation B shown in the figures comprises a sole 1 whose lower face is in contact with the upper face of a shank 2 L-shaped reinforced concrete. In the vertical branch of the L extend, among other triplets, side by side and within 20 cm of each other three tubes 3 which cross the entire main branch of the L, opening on the underside of the sill and above at ground level S. Figure 2 shows that the tubes 3 are divided into groups a, b, c, d ... n of three tubes. The tube 3 is plugged at the top by a threaded plug 4 and is protected by a protective coating 5. The tube 3 is filled with grout 6 without shrinkage, in one piece with a mass of mortar which fills a void which is created in the ground below the sill 2.

Si un vide recrée plusieurs années plus tard, on réitère l'opération de coulant en utilisant les deuxième tubes des triplets.If a vacuum recreates several years later, the flowing operation is repeated using the second tubes of the triplets.

Claims (7)

<U>REVENDICATIONS</U><U> CLAIMS </ U> 1. Fondation de bâtiment (B) comprenant une semelle (1) dont la face inférieure est en contact avec la face supérieure d'une longrine (2) traversée de haut en bas par au moins un tube (3) dans lequel se trouvent des moyens de consolidation, caractérisée en ce que les moyens de consolidation sont constitués de coulis (6) qui s'étend d'un seul tenant dans le tube (3) et sous la longrine (2) étant en contact avec sa face inférieure.1. Foundation building (B) comprising a sole (1) whose lower face is in contact with the upper face of a sill (2) traversed from top to bottom by at least one tube (3) in which are located consolidation means, characterized in that the consolidation means consist of slurry (6) which extends in one piece in the tube (3) and under the sill (2) being in contact with its underside. 2. Fondation suivant la revendication 1, caractérisée en ce que les tubes sont répartis en groupes, la distance entre deux tubes d'un même groupe étant inférieure à 50 cm.2. Foundation according to claim 1, characterized in that the tubes are divided into groups, the distance between two tubes of the same group being less than 50 cm. 3. Fondation suivant la revendication 1 ou 2, caractérisée en ce que la semelle et longrine sont d'un seul tenant.3. Foundation according to claim 1 or 2, characterized in that the sole and sill are integral. 4. Procédé de consolidation d'une fondation comprenant une semelle dont la face inférieure est en contact avec la face supérieure d'une longrine traversée haut en bas par au moins un tube, caractérisé ce qu'il consiste à couler par le tube du coulis dans un espace vide se trouvant sous la face inférieure de la longrine et communiquant avec le tube.4. A method of consolidating a foundation comprising a sole whose lower face is in contact with the upper face of a sill traversed up and down by at least one tube, characterized in that it consists of pouring through the tube of the grout in an empty space under the underside of the sill and communicating with the tube. 5. Procédé suivant la revendication 4, caractérisé ce qu'il consiste à couler du coulis par le tube jusqu'à ce que le tube en soit empli.5. Method according to claim 4, characterized in that it consists of pouring slurry through the tube until the tube is filled. 6. Procédé suivant la revendication 4 ou 5, caractérisé en qu'il est prévu au moins un groupe de tubes et l'on coule du coulis d'abord dans le premier tube des groupes, puis ultérieurement, par exemple un année après, dans le deuxième tube des groupes après avoir perforé mortier coulé en regard du deuxième tube.6. Process according to claim 4 or 5, characterized in that at least one group of tubes is provided and the slurry is poured first into the first tube of the groups, then subsequently, for example one year later, in the second tube groups after perforating poured mortar facing the second tube. 7. Fondation de bâtiment comprenant une semelle, caractérisée par des groupes de tubes traversant la semelle de haut en bas, la distance entre deux tubes dans un même groupe étant inférieure à 50 cm.7. Foundation building comprising a sole, characterized by groups of tubes traversing the sole from top to bottom, the distance between two tubes in the same group being less than 50 cm.
FR9911161A 1999-09-07 1999-09-07 BUILDING FOUNDATION AND METHOD OF CONSOLIDATION OF A FOUNDATION OF FOUNDATION TYPE Expired - Fee Related FR2798150B1 (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2672699C1 (en) * 2017-11-17 2018-11-19 Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный аграрный университет имени И.Т. Трубилина" Method for strengthening shallow foundations
RU189644U1 (en) * 2019-01-09 2019-05-29 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет путей сообщения" (СГУПС) The construction of the strengthening of the foundation of the building
RU2722906C1 (en) * 2019-07-15 2020-06-04 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2722905C1 (en) * 2019-07-15 2020-06-04 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2722907C1 (en) * 2019-07-15 2020-06-04 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2723784C1 (en) * 2019-07-15 2020-06-17 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2724819C1 (en) * 2019-07-15 2020-06-25 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2724818C1 (en) * 2019-07-15 2020-06-25 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2728072C1 (en) * 2019-07-15 2020-07-28 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2728077C1 (en) * 2019-07-15 2020-07-28 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2728075C1 (en) * 2019-07-15 2020-07-28 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2729818C1 (en) * 2019-07-15 2020-08-12 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment

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JPH0416632A (en) * 1990-05-11 1992-01-21 Misawa Homes Co Ltd Bottom section grouting method of concrete structure
JPH07259103A (en) * 1994-03-16 1995-10-09 Takayoshi Fujiwara Improving method for soft ground

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JPS62215729A (en) * 1986-03-14 1987-09-22 Hideyuki Shimizu Method and apparatus for correcting unequal settlement of building
JPH0416632A (en) * 1990-05-11 1992-01-21 Misawa Homes Co Ltd Bottom section grouting method of concrete structure
JPH07259103A (en) * 1994-03-16 1995-10-09 Takayoshi Fujiwara Improving method for soft ground

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* Cited by examiner, † Cited by third party
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2672699C1 (en) * 2017-11-17 2018-11-19 Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный аграрный университет имени И.Т. Трубилина" Method for strengthening shallow foundations
RU189644U1 (en) * 2019-01-09 2019-05-29 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет путей сообщения" (СГУПС) The construction of the strengthening of the foundation of the building
RU2722906C1 (en) * 2019-07-15 2020-06-04 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2722905C1 (en) * 2019-07-15 2020-06-04 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2722907C1 (en) * 2019-07-15 2020-06-04 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2723784C1 (en) * 2019-07-15 2020-06-17 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2724819C1 (en) * 2019-07-15 2020-06-25 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2724818C1 (en) * 2019-07-15 2020-06-25 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2728072C1 (en) * 2019-07-15 2020-07-28 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2728077C1 (en) * 2019-07-15 2020-07-28 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2728075C1 (en) * 2019-07-15 2020-07-28 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2729818C1 (en) * 2019-07-15 2020-08-12 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment
RU2728072C9 (en) * 2019-07-15 2021-02-05 Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский государственный архитектурно-строительный университет (Сибстрин) Device for pile foundation for machines with dynamic loads and vibration-sensitive equipment

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