EP4206419A1 - Verfahren zur realisierung eines antiseismisches systems - Google Patents

Verfahren zur realisierung eines antiseismisches systems Download PDF

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Publication number
EP4206419A1
EP4206419A1 EP21217990.7A EP21217990A EP4206419A1 EP 4206419 A1 EP4206419 A1 EP 4206419A1 EP 21217990 A EP21217990 A EP 21217990A EP 4206419 A1 EP4206419 A1 EP 4206419A1
Authority
EP
European Patent Office
Prior art keywords
panels
fixing
realising
antiseismic
realised
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.)
Pending
Application number
EP21217990.7A
Other languages
English (en)
French (fr)
Inventor
Giorgio Rocchi
Daniele Malavolta
Nicola Barilari
Tancredi Trombetti
Giampietro Menabue
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
Priority to EP21217990.7A priority Critical patent/EP4206419A1/de
Publication of EP4206419A1 publication Critical patent/EP4206419A1/de
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/027—Preventive constructional measures against earthquake damage in existing buildings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8635—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the 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
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G23/0229—Increasing or restoring the load-bearing capacity of building construction elements of foundations or foundation walls

Definitions

  • the present invention relates to a method for realising an antiseismic system for a structure.
  • the present invention also relates to an antiseismic system, preferably made with the above method.
  • structure is meant to indicate buildings and/or parts of buildings (e.g. the walls), located in seismic areas and that therefore require antiseismic consolidation.
  • the methodological approach is that of designing "in rigidity”, i.e. making an outer casing from reinforced concrete, which is much more rigid compared to the horizontal actions of existing structures, and therefore able to "absorb" most of the seismic actions in place of the latter.
  • the existing masonry cube is often provided with high intrinsic rigidity. Therefore, to "discharge” the seismic actions affecting the existing structures, it is often necessary to design a casing with walls that have considerable thicknesses (typically 15 cm for buildings with two-brick-thick walls of a modest height). In this way, the desired antiseismic protection is obtained for the existing building but, disadvantageously, a notably oversized structure is obtained from the "resistance” point of view and which is also "bulky", as the larger concrete wall thicknesses combined with the thermal insulation require thicknesses of about 25 cm on average.
  • a further problem lies in the phenomenon of rising dampness.
  • the realisation of a new outer casing made of concrete and insulating material with substantially "waterproof" characteristics can make the phenomenon worse if targeted contextual interventions are not envisaged.
  • the technical task of the present invention is that of providing a method for realising an antiseismic system and an antiseismic system that can overcome the drawbacks that have emerged from the prior art.
  • the aim of the present invention is therefore that of providing a method for realising an antiseismic system and an antiseismic system that can reduce the overall dimensions of the structure while maintaining the required antiseismic resistance.
  • a further aim of the present invention is that of providing a method for realising an antiseismic system and an antiseismic system that can reduce or eliminate the problems connected with the phenomenon of rising dampness.
  • the specified technical task and specified aims are substantially achieved by a method for realising an antiseismic system and an antiseismic system comprising the technical characteristics set out in one or more of the appended claims.
  • the dependent claims correspond to possible embodiments of the invention.
  • the specified technical task and specified aims are substantially achieved by a method for realising an antiseismic system for a structure comprising the steps of realising a separating cut in a base portion of the structure and realising an antiseismic structure.
  • Such step of realising the antiseismic structure envisages fixing an exoskeleton to the structure, fixing a plurality of panels to the exoskeleton maintaining a gap, introducing a cast of cement into the gap.
  • the step of fixing the plurality of panels and the step of introducing the cast of cement are realised gradually, from the bottom upwards, until the complete coating of the structure.
  • an antiseismic system preferably realised with a method as above, comprising a plurality of panels, an exoskeleton fixed or fixable to the structure and structured to enable the fixing of the panels while maintaining a gap, a cast of cement which fills the gap, a separating cut arranged in a base portion of the structure.
  • the synergistic action of the separating cut and of the antiseismic structure enable capillary rising of dampness to be interrupted and the rigidity of the horizontal actions of the existing masonry wall to be reduced while leaving unvaried its load-bearing capacity towards vertical loads.
  • the separating cut enables the antiseismic structure to absorb all the horizontal seismic action using considerably lower thicknesses with respect to known structures.
  • 1 denotes overall an antiseismic system.
  • the antiseismic system 1 is applied to a structure "S".
  • structure "S” is meant to indicate buildings and/or parts of buildings (e.g. the walls), located in seismic areas and that therefore require antiseismic consolidation.
  • structure "S” can mean a masonry wall.
  • the method for realising the antiseismic system 1 comprises a step of realising a separating cut 2 and a step of realising an antiseismic structure 3.
  • the realisation method is realised on an existing structure "S".
  • the step of realising an separating cut 2 envisages realising the separating cut 2 itself in a base portion of the structure "S".
  • the term base portion is meant to indicate a portion of the structure "S” comprised between the structure "S” itself and a foundation of the structure "F”.
  • the step of realising the separating cut 2 envisages realising a sliding surface between the structure "S” and the foundation “F” of the structure "S".
  • the step of realising the separating cut 2 is realised by inserting separating resins between the structure "S" and a foundation "F” of the structure "S”.
  • the separating cut 2 is realised using appropriate techniques, by inserting resins able to definitively interrupt capillary rising of dampness in the structure "S".
  • the separating cut 2 is realised specifically for the purpose of reducing the rigidity of the horizontal actions of the existing structure "S", leaving unvaried its load-bearing capacity towards vertical loads.
  • the antiseismic structure 3 will be able to withstand all the horizontal seismic action while maintaining minimal thicknesses. Therefore, it is possible to obtain the same seismic performance with rather contained wall dimensions, with the design no longer governed by the rigidity but by the resistance that is strictly necessary.
  • the separating cut 2 on the existing structures "S" enables the horizontal actions induced by the earthquake on the superstructure to be reduced or cancelled (simultaneously the separating cut 2 can lead to a reduction/elimination of rising dampness).
  • the separating cut 2 can be performed with the simultaneous interposition of an appropriate membrane which enables relative sliding with low friction coefficients and prevents rising dampness.
  • the step of realising the antiseismic structure 3 envisages fixing an exoskeleton 4 to the structure "S", fixing a plurality of panels 5 to the exoskeleton maintaining a gap and introducing a cast of cement into the gap.
  • the step of fixing the plurality of panels 5 and the step of introducing the cast of cement are realised gradually, from the bottom upwards, until the complete coating of the structure "S".
  • the panels 5 are arranged in successive layers or levels "L” and upon the completion of the connection of each layer or level “L” a cast of cement is introduced.
  • the method further comprises a step of realising a foundation kerb 6.
  • a foundation kerb 6 enables the antiseismic structure 3 not to weigh on the foundations "F" of the existing structure "S”.
  • the step of fixing the exoskeleton 4 is realised by fixing a plurality of vertical profiles 4a to the structure "S".
  • such step is realised by positioning and fixing angular plates appropriately spaced out from one another to the structure "S".
  • Each vertical profile 4a has standard type dimensions (with overall variable lengths, preferably of 300 cm).
  • each panel 5 is preferably fixed to the exoskeleton 4 by means of horizontal profiles 7.
  • each panel 5 is fixed to at least one portion of at least one horizontal profile 7.
  • One or more horizontal profiles 7 define a layer or level "L”.
  • the step of fixing the plurality of panels 5 is realised by arranging horizontal profiles having an omega-shaped section or other shapes suitable for the purpose.
  • the omega-shaped section is preferably delimited by a central, substantially C-shaped portion 7a and by a portion with a vertical extension 7b.
  • the omega-shaped section is delimited by an upper portion and a lower portion with a vertical extension.
  • omega shape of the horizontal profiles 7 shown herein is a preferred but not exclusive shape of the profiles themselves; the patent holders reserve the right to modify the shape of said profiles, while maintaining the same functionalities.
  • Each panel 5 is fixed to a respective portion with a vertical extension 7b through a slot in the panel 5 itself.
  • the step of fixing the panels 5 envisages arranging insulating panels 5 made of sintered expanded polystyrene (EPS), extruded polystyrene (XPS) or other materials with similar characteristics.
  • EPS sintered expanded polystyrene
  • XPS extruded polystyrene
  • the panels 5 can be made of other materials having appropriate characteristics similar to those of the EPS panels 5.
  • the step of fixing the panels 5 is realised by arranging temporary formwork panels 5 (preferably made of wood), which are removed after the cast of cement before proceeding with the normal finishing processes.
  • the method comprises a step of removing panels 5 subsequent to the complete coating of the structure "S" with the cast of cement, and subsequent finishing steps.
  • the method can further comprise a step of fixing reinforcement nets to the structure "S" positioning them in the exoskeleton 4.
  • the method envisages positioning between the vertical profiles 4a reinforcements consisting of electrowelded nets, hooks for the connection of the nets, pins concreted to the structure "S” and the like.
  • reinforcements may preferably be made of steel, but also of other materials, of suitable resistance and with a similar function.
  • the antiseismic structure 3 (obtained by the realisation of a reinforced cementitious composite wall and/or made of other materials and external systems to the existing structure "S" and connected thereto appropriately with specific connectors) withstands up to 100% of the horizontal actions induced by the earthquake, reducing and/or practically cancelling relative deformations between the superstructure and foundation "F".
  • the present invention also relates to an antiseismic system 1, preferably made with the above method.
  • the antiseismic system 1 comprises a plurality of panels 5, an exoskeleton 4 fixed or fixable to the structure "S" and structured to enable the fixing of the panels maintaining a gap and a cast of cement which fills the gap.
  • the antiseismic system 1 further comprises an separating cut 2 arranged in a base portion of the structure "S".
  • the antiseismic system 1 comprises an separating cut 2 and an antiseismic structure 3.
  • the method and antiseismic system 1 described in the foregoing are able to obviate the drawbacks that have emerged in the prior art.
  • the synergistic action of the separating cut 2 and of the antiseismic structure 3 enable capillary rising of dampness to be interrupted and the rigidity of the horizontal actions of the existing structure "S" (e.g. a masonry wall) to be reduced while leaving unvaried its load-bearing capacity towards vertical loads.
  • the separating cut 2 enables the antiseismic structure 3 to absorb all the horizontal seismic action using considerably lower thicknesses with respect to known structures.
  • the present invention enables an antiseismic system 1 to be obtained in which the antiseismic structure 3 can have different thicknesses along the entire height of the structure "S".
  • the present invention makes available a method for realising an antiseismic system 1 and an antiseismic system 1 which is easy and economical to realise.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Emergency Management (AREA)
  • Civil Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
EP21217990.7A 2021-12-28 2021-12-28 Verfahren zur realisierung eines antiseismisches systems Pending EP4206419A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21217990.7A EP4206419A1 (de) 2021-12-28 2021-12-28 Verfahren zur realisierung eines antiseismisches systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21217990.7A EP4206419A1 (de) 2021-12-28 2021-12-28 Verfahren zur realisierung eines antiseismisches systems

Publications (1)

Publication Number Publication Date
EP4206419A1 true EP4206419A1 (de) 2023-07-05

Family

ID=79730155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21217990.7A Pending EP4206419A1 (de) 2021-12-28 2021-12-28 Verfahren zur realisierung eines antiseismisches systems

Country Status (1)

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EP (1) EP4206419A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100119950A (ko) * 2009-05-04 2010-11-12 한국철도기술연구원 인터록 보강판을 이용한 기설기둥의 내진 보강장치, 내진 보강구조 및 내진 보강방법
KR101397800B1 (ko) * 2013-08-13 2014-05-20 (주)한국방재기술 단면증설 및 지중보에 의한 기존 철근콘크리트 모멘트골조 건축물의 내진보강방법
KR20190142016A (ko) * 2018-06-15 2019-12-26 변대근 날개 벽 증설공법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100119950A (ko) * 2009-05-04 2010-11-12 한국철도기술연구원 인터록 보강판을 이용한 기설기둥의 내진 보강장치, 내진 보강구조 및 내진 보강방법
KR101397800B1 (ko) * 2013-08-13 2014-05-20 (주)한국방재기술 단면증설 및 지중보에 의한 기존 철근콘크리트 모멘트골조 건축물의 내진보강방법
KR20190142016A (ko) * 2018-06-15 2019-12-26 변대근 날개 벽 증설공법

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