EP2930287A1 - Herstellungsverfahren eines nicht strukturellen plattenbelags - Google Patents

Herstellungsverfahren eines nicht strukturellen plattenbelags Download PDF

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Publication number
EP2930287A1
EP2930287A1 EP15162276.8A EP15162276A EP2930287A1 EP 2930287 A1 EP2930287 A1 EP 2930287A1 EP 15162276 A EP15162276 A EP 15162276A EP 2930287 A1 EP2930287 A1 EP 2930287A1
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EP
European Patent Office
Prior art keywords
pavement
moments
armature
difference
structural
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.)
Granted
Application number
EP15162276.8A
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English (en)
French (fr)
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EP2930287B1 (de
Inventor
Helder GASPAR
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.)
Hsols Industriels
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Hsols Industriels
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Publication of EP2930287A1 publication Critical patent/EP2930287A1/de
Application granted granted Critical
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures

Definitions

  • the present invention is in the field of construction and building, more particularly in the realization of a tessellation based on concrete.
  • the present invention will find a preferential application, but in no way limiting, in the realization of a non-structural reinforced slab.
  • a structural pavement is used to receive on the upper face and support a structure, such as a building.
  • a structural pavement incorporates a metal reinforcement, generally uniformly distributed over the height of said pavement and giving it its structural character.
  • a non-structural pavement does not receive any structure, the building located above being supported directly by the base or the foundations located under and also supporting said non-structural pavement.
  • Such non-structural pavement is generally free of reinforcement.
  • Such a non-structural pavement is generally provided in the industrial-type floor construction, for example in the case of a logistics platform or a hangar.
  • These structures require a high quality of realization due in particular to the importance of the loads that the pavement is intended to receive.
  • such a pavement must withstand the traffic of lifting gear depending on the type of machine, their speed of movement, their support on the ground, etc.
  • a pavement made only of concrete has a disadvantage related to the removal of concrete once the tiled floor, during its solidification. This removal may lead to cracking of the pavement.
  • so-called "shrink" joints are usually considered. Depending on the total surface area of the pavement, these removal joints are therefore made at substantially regular intervals and close to each other, then delimiting a pavement. from about 25 to 36 m 2 . To do this, it is possible to cause a so-called straight crack during a step of sawing said tiling, this step for channeling the crack. It has also been planned to fill these withdrawal joints with a synthetic material, such as an elastomer.
  • the concrete constituting such a non-structural pavement are added metal fibers to improve the mechanical properties of the concrete to traction and therefore to the withdrawal.
  • this type of pavement is not entirely satisfactory and it is always necessary to provide withdrawal joints.
  • the floor is primed for receiving and supporting it.
  • the ground is prepared to ensure the good performance of this construction.
  • the soil undergoes modifications to, firstly, to receive said construction and, secondly, to remain stable for the entire life of this construction.
  • a distribution mat is produced.
  • a mattress consists of a single layer of compacted material acting as a rigid support and fixed in time, absorbing some of the changes in the soil. It also makes it possible to level the floor surface as well, with a view to producing a construction on the upper face. It will be noted that between the surface of said mattress and the underside of the construction, a sliding layer is generally arranged, which can be made of sand with a tight intermediate layer in the form of a plastic film.
  • Soil improvement techniques involve modifying the characteristics of a soil by physical action (for example, vibrations) or by embedding a more resistant material in the soil or on the ground.
  • a technique used is to make additional foundations in the ground and on which will rest the superimposed mattress and construction.
  • ballasted columns can be made vertically in the soil, regularly spaced so as to form an anchor network intended to increase the bearing capacity of the soil and / or the shear strength, to reduce the absolute and differential settlements. as well as the time of consolidation, while avoiding the creation of draining elements.
  • ballasted columns reduce the risks caused by liquefaction phenomena during earthquakes or significant vibrations.
  • the ballasted columns are made of granular materials, without cohesion, set up by repression in the soil and compacted by successive passes. Such a column therefore has no binder on its height.
  • Another known solution consists of vertical piles, made of bonded material, such as reinforced concrete.
  • the industrial pavements impose strong vertical stresses likely to deform locally or cross the distribution mattress to directly act on the soil which may be crowded.
  • the ground in reverse reaction, creates vertical stresses upwards likely to cross the mattress and deteriorate the upper construction.
  • the distribution mattress must reduce the forces and forces from the construction and the soil, by diffusing them within its thickness.
  • the reinforcement of a non-structural pavement also has the role of taking up the downward vertical forces, ie the forces applied regularly or not on the pavement and which propagate downwards through the pavement, but up to 'to its base, namely its distribution mattress and its foundations.
  • These efforts are quantified as downward vertical moments. According to these moments, theoretically quantified, the nature and the quantity of the foundations to be implanted, but also the thickness of the distribution mat, are determined. Then, these vertical descending moments serve as a basis for calculating the thickness of the pavement, but also its composition as the amount of metal fibers adjoined, as well as the density and the section of the frame that it encloses.
  • the characteristics related to the pavement and its base are only determined to ensure the recovery of these downward vertical moments, allowing the assembly thus formed to support the loads to be applied to the upper face of said pavement.
  • the dimensions and the distribution of the soil reinforcement are determined, then the thickness of the distribution mat, and finally the thickness of the floor and floor. the section of his frame.
  • downward vertical moments have different values depending on the depth, always in function of the location of said reinforcements soil, especially during inclusions reinforced concrete.
  • the current solution is therefore to introduce a frame at the bottom of the pavement to resume these lower descending moments, while a frame in the upper part takes the top down moments.
  • solutions conceived in non-structural paving incorporating a reinforcement in the upper part are intended to improve the surface resistance of the pavement, in particular to limit its shrinkage, without taking into consideration these downward vertical moments, whether they are higher or lower.
  • these moments are supposed to be taken up by the distribution mat and, in the case of a structural floor, by a frame located at the bottom of said floor.
  • these ascending moments are not purely and simply not taken into consideration.
  • the present invention aims to overcome the disadvantages of the state of the art, proposing to otherwise use the strength offered by the reinforcement located in the upper part of a non-structural slab, consisting of a mixture of concrete and fiber.
  • the invention has made it possible to determine to what extent an armature located in the upper part, in the first upper third of the pavement, in particular with a minimum of 3 cm (cm) of upper coating, allows to take back some of the descending moments, not taken up by the fibers.
  • the armature in the upper part takes a difference between the upper and lower moments, when said higher moments are greater than the lower moments.
  • the invention makes it possible to determine the configuration of a tiling for a total moment, with only a reinforcement in the upper part that comes to relay the resistance offered by the addition of fibers.
  • the section of said armature is dimensioned so that it takes up at least the value of this difference, up to a maximum of the value of said higher moments.
  • Said armature can be positioned in the first upper third with a coating of at least three centimeters.
  • Said section of the frame can be determined at a maximum of 5.03 cm 2 .
  • the thickness of said pavement can be determined between 15, 18, 20 and 25 cm.
  • the present invention consists of a method of constructing a non-structural slab 1 provided.
  • Such paving 1 is intended to be made in the upper part of a floor 2. To do this, the latter is primed.
  • an improvement 3 is made to said floor 2 intended to receive said pavement 1.
  • a soil improvement 3 may consist of ballast columns made vertically in the floor 2, regularly spaced so as to form an anchor network designed to increase the bearing capacity of the soil and / or the shear strength, reduce the absolute and differential settlements, as well as the consolidation time, while avoiding the creation of draining elements.
  • said improvement 3 of soil 2 may consist of vertical piles, made of bonded material, such as reinforced concrete. These piles are distributed evenly.
  • the soil improvement 3 is determined as a function of the nature of said soil 2, but also of the theoretical constraints that it will have to bear, namely the stresses that said pavement 1 will have to support and transmit to said soil 2.
  • a distribution mat 4 consists of one or more layers of compacted material, acting as a rigid support and fixed in time, absorbing a portion of the soil modifications 2. It also makes it possible to level the surface of the floor 2 as well, with a view to producing, on the upper face, said floor 1.
  • the distribution mat 4 is determined according to the nature of said floor 2 and its improvement 3, but also the theoretical constraints that it will have to bear, namely the stresses that said floor 1 will have to support and transmit to said mattress 4 .
  • said mattress 4 is covered with a sliding layer 5, in particular in the form of a plasticized film.
  • This assembly including the improvement 3 of soil 2, its mattress 4 and the sliding layer 5 constitutes the underbody. As mentioned above, the characteristics of the latter are determined with respect to the load that said pavement 1 will receive.
  • An essential feature of the present invention resides in taking different account of the forces applied on the pavement 1 and their effects on the lower elements.
  • This force is distributed through the pavement 1, in the form of several complementary forces 7. These complementary forces are descending, oriented in the direction of said force 6, but also diverging therefrom. These complementary forces 7 pass through the pavement 1, as well as the distribution mattress 4.
  • the lower moments 10 are found to be larger than the higher moments 9 when they are situated between the improvements 3. This difference is modeled by the greater length of the arrow of the lower moments 10 with respect to the length of the arrow of higher moments 9.
  • An essential feature of the present invention is the fact of quantifying the difference of these moments 9,10.
  • the invention also makes it possible to quantify an inverse difference, namely when the higher moments 9 are greater than the lower moments 10.
  • the method according to the invention consists in calculating the upper downward vertical moments 9 on the surface of said tiling 1 and the lower downward vertical moments 10 on the lower face of said tiling 1, as a function of the load applied on said tiling 1.
  • the invention provides for only positioning a frame 11 in the upper part of said floor 1.
  • an inventive aspect resides in taking part of the moments through an armature 11 located in the upper part of the pavement 1, replacing the recovery granted by the fiber.
  • the section of said armature is dimensioned so that it resumes at least the value of this difference, up to a maximum of the value of said higher moments.
  • the section of a reinforcement 11 is determined as a function of the difference of the moments 9, 10.
  • the thickness of said paving 1 is also determined.
  • the latter can be determined between 15, 18, 20 and 25 cm.
  • said armature 11 is positioned in the upper part of said paving 1, in the first upper third of its thickness.
  • said armature 11 is positioned in the first upper third with a coating of at least three centimeters (cm). In other words, the armature 11 is positioned so that a thickness of at least 3 cm comes to cover it. The armature 11 is then in the upper part of said paving 1, but under at least 3 cm of concrete.
  • the fiber-reinforced concrete comes back most of the moments 9,10 and the armature 11 located in the upper part takes up the difference of said moments 9,10, in particular and preferably when the value of the lower moments 10 is greater than the value of the higher moments 9, then the armature 11 comes back to the difference between these values.
  • the section of the armature 11 is determined at a maximum of 5.03 cm 2 (square centimeters). Indeed, beyond this section, it has been found that to facilitate the implementation, but also to improve the strength of the pavement 1, as well as for economic reasons, it is more profitable to introduce a second reinforcement in part bottom of paving 1.
  • the manufacturing method according to the invention makes it possible, from a positioning of a single and only reinforcement 11 in the upper part of a non-structural slab 1 made of fiber concrete, to allow the resumption of the differences between the moments upper and lower verticals 9 and lower 10.
  • the invention has highlighted the fact of taking up at least part of the upward vertical moments.

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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)
  • Road Paving Structures (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
EP15162276.8A 2014-04-07 2015-04-01 Herstellungsverfahren eines nicht strukturellen plattenbelags Active EP2930287B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1453059A FR3019571B1 (fr) 2014-04-07 2014-04-07 Procede de construction d'un dallage non structurel

Publications (2)

Publication Number Publication Date
EP2930287A1 true EP2930287A1 (de) 2015-10-14
EP2930287B1 EP2930287B1 (de) 2016-12-14

Family

ID=51014487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15162276.8A Active EP2930287B1 (de) 2014-04-07 2015-04-01 Herstellungsverfahren eines nicht strukturellen plattenbelags

Country Status (4)

Country Link
EP (1) EP2930287B1 (de)
ES (1) ES2618565T3 (de)
FR (1) FR3019571B1 (de)
PT (1) PT2930287T (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1466591A (en) * 1920-10-27 1923-08-28 Edward F Kellie Floor construction
DE9210992U1 (de) 1992-08-17 1992-10-08 K.-H. Wiegrink GmbH, 4290 Bocholt Dübelanordnung für aus Beton hergestellte Industriefußböden
FR2896000A1 (fr) * 2006-01-09 2007-07-13 Stratec Sarl Dallage non structurel et son procede de realisation
WO2013004959A2 (fr) * 2011-07-04 2013-01-10 Hsols Industriels Procede de construction d'une structure et d'un matelas de repartition

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1466591A (en) * 1920-10-27 1923-08-28 Edward F Kellie Floor construction
DE9210992U1 (de) 1992-08-17 1992-10-08 K.-H. Wiegrink GmbH, 4290 Bocholt Dübelanordnung für aus Beton hergestellte Industriefußböden
FR2896000A1 (fr) * 2006-01-09 2007-07-13 Stratec Sarl Dallage non structurel et son procede de realisation
WO2013004959A2 (fr) * 2011-07-04 2013-01-10 Hsols Industriels Procede de construction d'une structure et d'un matelas de repartition

Also Published As

Publication number Publication date
EP2930287B1 (de) 2016-12-14
FR3019571A1 (fr) 2015-10-09
FR3019571B1 (fr) 2016-04-29
PT2930287T (pt) 2017-03-15
ES2618565T3 (es) 2017-06-21

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