EP1607547A1 - Verfahren zur Verfestigung oder Verstärkung von Mauerwerkstrukturen und dergleichen - Google Patents

Verfahren zur Verfestigung oder Verstärkung von Mauerwerkstrukturen und dergleichen Download PDF

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Publication number
EP1607547A1
EP1607547A1 EP04013553A EP04013553A EP1607547A1 EP 1607547 A1 EP1607547 A1 EP 1607547A1 EP 04013553 A EP04013553 A EP 04013553A EP 04013553 A EP04013553 A EP 04013553A EP 1607547 A1 EP1607547 A1 EP 1607547A1
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EP
European Patent Office
Prior art keywords
process according
skeleton structure
wall
masonry
previous
Prior art date
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EP04013553A
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English (en)
French (fr)
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EP1607547B1 (de
Inventor
Franco Consani
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Individual
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Individual
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Priority to EP04013553A priority Critical patent/EP1607547B1/de
Priority to DE602004006849T priority patent/DE602004006849T2/de
Priority to AT04013553T priority patent/ATE364115T1/de
Publication of EP1607547A1 publication Critical patent/EP1607547A1/de
Application granted granted Critical
Publication of EP1607547B1 publication Critical patent/EP1607547B1/de
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    • 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

Definitions

  • the present invention concerns the field of building. More specifically, it concerns a new process for consolidating and/or reinforcing masonry structures and the like, both for restructuring and repair interventions, and for new buildings.
  • the prior art comprises intervention systems generally used in the structural recovery of masonry walls, above all in areas subject to seismic risk.
  • intervention systems generally used in the structural recovery of masonry walls, above all in areas subject to seismic risk.
  • it is known to actually insert beams and columns linked in frames to make more rigid or replace the masonry wall itself.
  • Such methods besides being rather burdensome in terms of costs, have drawbacks for the structures and the pre-existing materials, with various negative repercussions: difficulty should demolition or cutting be necessary, possible dishomogeneous response to stresses by the materials arranged together, assessment of the variations in physical and surface finish characteristics between one material and another, and a potential increase in loads.
  • the object of the present invention is that of overcoming the aforementioned drawbacks, providing a process for the integration of wall-type structures, both during construction and in repair, which adds extensive rigidity still with a low degree of intervention on the base structure, and leaves the masonry wall's continuity as unaltered as possible, preserving the structural efficiency and the global characteristics of the materials and being more adjustable and versatile than known systems.
  • the process is substantially based upon the combination of two structures, one of the masonry type, possibly pre-existing, and the other forming an extensive skeleton.
  • the size and arrangement of the skeleton structure made up of single linear elements assembled together by means of repeatable and rigid joints, are derived from a mesh scanning carried out on the masonry wall so as to extensively cover it, and which therefore is a function of the geometry and composition thereof.
  • surface channels and through holes are formed, for linear elements of the skeleton and the relative connections to be inserted, together constituting a further general structural system in rigid frameworks with which the wall itself can participate.
  • the masonry remains largely integral and absolutely prevalent in the assembly, given the small size of the linear elements composing the framework. This type of intervention also excludes extensive demolition or through cuts.
  • the inserted structure, with rigid elements and connections, is such as to have its own autonomy.
  • a generic load bearing masonry wall 1 (figure 1), with a typical thickness of about 40 centimetres and defined by floors (not represented), has a broken planimetrical development and includes a window 2 and a door 3.
  • a scanning of the wall 1 is carried out, so as to define a network R comprising meshes M that are typically quadrilateral like in the example, so that the wall 1 itself is extensively covered and geometrically reconstructed by said scanning.
  • the network is in practice obtained by squaring the wall 1, on both sides, into meshes M, as a consequence of carring out a division of the same wall into at least three horizontal bands and, adopting the width of the bands as reference, according to vertical bands in a number such as to cover its extension, also in this case in a number of no less than three.
  • the division is obviously further developed and/or adapted considering the specific characteristics of the wall 1, and in particular the need to suitably involve the end parts, the corners, the openings, recesses, cavities, columns, portions made from different materials and/or with different load situations and whatever else. Consequently, the squarings, and therefore the width and/or the number of bands are adjusted.
  • the meshes M symmetrically define a plurality of flat regions on the two sides of the wall 1. Considering the imaginary transversal connections CT between corresponding nodes N on the two sides, the three-dimensional drawing of the network R is completed.
  • the network R thus identifies a texture for an extensive skeleton structure 4 (figure 3), typically made from metal material, configured following the composition of the wall, with a depth that is never greater than the thickness of the masonry wall 1.
  • the skeleton structure 4 is formed from single linear elements or rods 5 of varying lengths, assembled in succession according to the aforementioned texture, and therefore rigidly connected, through a joint system 6, preferably of a modular type, which shall be discussed later on, at the junctions N.
  • the rods 5 thus precisely follow the shape of the meshes M and of the relative transversal connections CT.
  • the process according to the invention then comprises the step (figure 2) of forming, on the wall 1, again carefully following the texture established by the network R, a series of channels or grooves 7 and transversal through holes 8 suitable for housing precisely the rods 5 of the skeleton structure 4. More specifically, the grooves 7 are intended to receive the longitudinal rods 5, i.e. those to be arranged along the meshes M, whereas the through holes 8 allow the insertion of the transversal rods along the connections CT.
  • the subsequent step of the process consists precisely of the mounting of the structure 4 on the wall 1 thus prepared.
  • the surface or longitudinal rods 5 are arranged within, or immediately close to, the two opposite faces of the wall 1.
  • the transversal rods 5, are intended for the connection between the two surface frameworks of the structure 4, jointly applying a consolidating and containment action.
  • the wall 1 still keeps its core intact, which can therefore continue to carry out load bearing functions.
  • the size and the spacing of the holes 8 induce a negligible weakening in the masonry structure, with effects that are incomparable with those deriving from through cuts or demolition.
  • the load bearing capability is, however, integrated by the added skeleton structure 4. The latter, with single elements and joints with suitable characteristics and size can, indeed, assume its own load hearing function.
  • a masonry portion surrounded by any square of the skeleton structure 4 realises a plugging effect, simulating the presence of a diagonal element.
  • the skeleton structure 4 can, however, be integrated by actual diagonal rods, arranged inside a single square on a face of the wall 1.
  • the network R' of the wall shall be based upon a succession of meshes M' that define and surround the window itself, of variable width according to the structural and/or rigidity objectives that one wishes to achieve (figure 5).
  • the consequent structural texture again divided into three horizontal and vertical bands, shall thus be realised according to the process already described.
  • through holes 18 and grooves or channels 17 are made, for the assembly of a skeleton structure 14 with rods 15 connected on the junctions N by joints 16, surrounding the window 12 (figure 6).
  • the wall In the presence of a cavity inside the wall 11, for example hydraulic or venting ducts 19 (figures 7 and 9), the wall has a locally reduced thickness.
  • the skeleton structure 14 can be placed adjacently to the outside of the residual masonry and/or structurally replace it. Where considered suitable (figure 7) the structure 14 can comprise additional diagonal rods 15', as well as be accompanied by a new and adjacent masonry part 11', also of low thickness, to coat the skeleton structure 14 on one face of the wall 1, which eases the anchoring to the existing wall.
  • the joints 16 can be used to connect other skeleton structures, also textured in the same way but having a different depth to the main one.
  • the rods 5, 15 of the skeleton structure 4, 14 shall usually be made from metal material, selected based upon the requirements.
  • metal material selected based upon the requirements.
  • any material can in general be used provided that, for its characteristics of rigidity, weight, workability and cost, is suitable for achieving the aforementioned objectives.
  • elements made from wood or composite materials it is possible to use elements made from wood or composite materials.
  • various constructive devices can be used, which take into account the connection requirements and the operating conditions for their insertion.
  • the rods 5, 15 can have an overall T-shaped section, in practice consisting of two distinct semi-elements, each with an L-shaped section.
  • the T-shaped section makes the rods 5 easier to insert into the grooves or channels 7, 17.
  • said joint comprises four brackets 20, each rigidified by a triangular element 21 in which a slot 21a is formed near to the right angle of the bracket.
  • brackets 20a are also formed for the connection with the rods 5, 15, in turn having suitable holes 28, through screw means (not represented).
  • the joint also comprises a locking plate 22 with a quadrilateral profile, suitable for being arranged substantially coplanarly with the face of the wall 1 in which the channels 7, 17 are formed. From one side of the plate 22 four platelets 23 project in a off-centered manner. On the plateles 23, again with bolted connections (not represented), the brackets 20 are secured through the same connection elements also engaging with the rods 5, 15. For such a purpose, the platelets 23 have holes 23a suitable for corresponding with the holes 20a of the brackets 20. The platelets 23 also act, as shall be seen shortly, as shims between the brackets 20.
  • a traverse 24, intended to connect two joints 6, 16 passing through a transversal hole 8, 18 of the wall 1, 11, comprises four tubular profiles 25, each with a section corresponding to the profile of the slots 21a and of the openings 22a.
  • the four profiles 25 are connected together by spaced groups of clamps 26 suitably fixed onto the outer surfaces of the profiles, with the cooperation of cross-shaped plugs 27, arranged centrally, of which two at respective ends of the traverse 24, all intended to compose the same traverse 24 in a single element.
  • the end plugs are smaller in size than that (or those) on the inside, thus defining, in cooperation with the profiles, a seat intended to engage with the brackets 20.
  • the arms of such end plugs 27 thus, in practice, have the same thickness and side surfaces matching with the platelets 23, for the entire depth of the brackets 20.
  • the joint is assembled in the following manner. Assuming that the rod 5, 15 that converges to the junction from below is already present, a first pair of brackets 20 is arranged in the space between the two semi-elements of the rod itself. The traverse 24 is then engaged, by inserting the tubular profiles 25 in the slots 21a of the brackets 20.
  • the operation can be repeated at the other end of the traverse 24, i.e. at the opposite face of the wall 1, finally applying locking screws (not represented) to prevent a possible sliding of the traverse with respect to the plate 22 and brackets 20 assembly.
  • Such screws are positioned axially in a central hole 22b of the plate 22.
  • clamps 26 that connect the profiles 25 of the traverse 24 near to the ends shall be placed so as to constitute an abutment for the arms of the brackets 20, and a support for the cross-shaped plugs 27.
  • Each end of the traverse 24 is tightly enclosed in extended cavities or pairs of cavities with configurations totally analogous, respectively, to the perimeter of the profiles 25 and of the plug 27.
  • the plates 22 and the reinforcing elements 21 provide flexional rigidity between vertical and horizontal rods, whereas the engagements that are realised on the slots 21a and on the openings 22a allow the torsional and flexional connection between the rods and the traverse 24.
  • brackets 20, the plate 22, the platelets 23 and the traverse 24, together with the plurality of bolts restore the vertical and horizontal continuity of the rods converging in the junction.
  • Possible further bolted connections besides allowing diagonal rods 5, 15,to the fixed to the plate 22, can give the pairs of brackets greater rigidity also for flexion on transversal planes with respect to the faces of the wall 1, 11.
  • the joint as a whole is thus able to rigidly connect both the rods 5, 15 that converge on a junction N coplanar to a face of the wall, and the rods that reach the same junction N crossing the wall through a hole 8 - i.e. the traverses 24 - all the above in the conditions envisaged by the proposed process, therefore in the presence of the wall and with the structure accessible only from its faces.
  • the process can, indeed, be extended to the entire structure of any building (dwelling or otherwise), or be applied just to some masonry dividing walls or on simple portions of different walls, being, in particular, easly adjustable in order to follow different planimetric or ground configurations.
  • the framework, junctions included, to that configuration can be used by adapting the framework, junctions included, to that configuration.
  • the rods 5, 15 can clearly have a variable length according to the scanning carried out (a priori there is nothing to prevent a network texture that is denser, even only locally or else, for other cases, orientated diagonally).
  • the surface of longitudinal rods do not necessarily have to be contained within the masonry thickness; in many cases, it is operatively possible or advantageous for this to be the case, as much as necessary to ease the connection by means of the transversal rods and to improve the integration effect with the base masonry work, both for structural and aesthetic purposes.
  • the arrangement of the skeleton structure can also be carried out with the longitudinal rods completely outside the wall, in contact or spaced a part from the respective faces, and thus merely realising through holes in the masonry.
  • connection between the two structures is thus modulated, even reducing it to the simple co-existence of one in parallel with the other. If an even closer connection is needed, the most suitable anchoring provisions can always be adopted.
  • the surface framework also lends itself to such anchoring as well as to providing support for the application of further coatings, for example insulation systems.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Retaining Walls (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Working Measures On Existing Buildindgs (AREA)
EP04013553A 2004-06-09 2004-06-09 Verfahren zur Verfestigung oder Verstärkung von Mauerwerkstrukturen und dergleichen Not-in-force EP1607547B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04013553A EP1607547B1 (de) 2004-06-09 2004-06-09 Verfahren zur Verfestigung oder Verstärkung von Mauerwerkstrukturen und dergleichen
DE602004006849T DE602004006849T2 (de) 2004-06-09 2004-06-09 Verfahren zur Verfestigung oder Verstärkung von Mauerwerkstrukturen und dergleichen
AT04013553T ATE364115T1 (de) 2004-06-09 2004-06-09 Verfahren zur verfestigung oder verstärkung von mauerwerkstrukturen und dergleichen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04013553A EP1607547B1 (de) 2004-06-09 2004-06-09 Verfahren zur Verfestigung oder Verstärkung von Mauerwerkstrukturen und dergleichen

Publications (2)

Publication Number Publication Date
EP1607547A1 true EP1607547A1 (de) 2005-12-21
EP1607547B1 EP1607547B1 (de) 2007-06-06

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EP04013553A Not-in-force EP1607547B1 (de) 2004-06-09 2004-06-09 Verfahren zur Verfestigung oder Verstärkung von Mauerwerkstrukturen und dergleichen

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Country Link
EP (1) EP1607547B1 (de)
AT (1) ATE364115T1 (de)
DE (1) DE602004006849T2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101852021A (zh) * 2010-04-27 2010-10-06 武汉大学 一种衬体结构加固方法
US7934347B2 (en) 2006-07-28 2011-05-03 Paul Brienen Coupling beam and method of use in building construction
ITMI20102375A1 (it) * 2010-12-22 2012-06-23 Uab Leonardo Gef Baltic Gef Modulo diatonale scatolare per strutture edilizie per un confinamento attivo multidirezionale
ITBO20110327A1 (it) * 2011-06-07 2012-12-08 Res In Tec Italia S R L Metodo per rinforzare opere edili ed opere rinforzate cosi' ottenute
ITBO20110611A1 (it) * 2011-10-28 2013-04-29 Uab Leonardo Gef Baltic Gef Metodo per rinforzare una struttura muraria e corrispondente sistema di rinforzo
IT201700084460A1 (it) * 2017-07-25 2019-01-25 Mario Moronesi Sistema per il consolidamento delle pareti portanti
CN113356627A (zh) * 2020-03-04 2021-09-07 中国建筑科学研究院有限公司 一种既有建筑摩擦滑移加固结构及其施工方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249120A (en) * 1991-01-26 1992-04-29 Executive Insulation Structural repair process
GB2298889A (en) * 1995-03-14 1996-09-18 Itw Ltd Wall tie
GB2302896A (en) * 1995-07-01 1997-02-05 William George Edscer Arch reinforcement
DE20104518U1 (de) * 2001-02-20 2001-06-28 Motiee Tehrani Mehran Zangensystem für vorhandene Häuser gegen Erdbeben
EP1170440A1 (de) * 2000-07-05 2002-01-09 STAP-Representaçao, Consolidaçao e Modificaçao de Estruturas, S.A. Verfahren zur Verstärkung von Mauerwerkwänden

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249120A (en) * 1991-01-26 1992-04-29 Executive Insulation Structural repair process
GB2298889A (en) * 1995-03-14 1996-09-18 Itw Ltd Wall tie
GB2302896A (en) * 1995-07-01 1997-02-05 William George Edscer Arch reinforcement
EP1170440A1 (de) * 2000-07-05 2002-01-09 STAP-Representaçao, Consolidaçao e Modificaçao de Estruturas, S.A. Verfahren zur Verstärkung von Mauerwerkwänden
DE20104518U1 (de) * 2001-02-20 2001-06-28 Motiee Tehrani Mehran Zangensystem für vorhandene Häuser gegen Erdbeben

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7934347B2 (en) 2006-07-28 2011-05-03 Paul Brienen Coupling beam and method of use in building construction
CN101852021A (zh) * 2010-04-27 2010-10-06 武汉大学 一种衬体结构加固方法
ITMI20102375A1 (it) * 2010-12-22 2012-06-23 Uab Leonardo Gef Baltic Gef Modulo diatonale scatolare per strutture edilizie per un confinamento attivo multidirezionale
ITBO20110327A1 (it) * 2011-06-07 2012-12-08 Res In Tec Italia S R L Metodo per rinforzare opere edili ed opere rinforzate cosi' ottenute
ITBO20110611A1 (it) * 2011-10-28 2013-04-29 Uab Leonardo Gef Baltic Gef Metodo per rinforzare una struttura muraria e corrispondente sistema di rinforzo
EP2586935A1 (de) * 2011-10-28 2013-05-01 UAB "Leonard, Gef Baltic, Gef" Verfahren zur Verstärkung einer Wandstruktur, und entsprechendes Verstärkungssystem
IT201700084460A1 (it) * 2017-07-25 2019-01-25 Mario Moronesi Sistema per il consolidamento delle pareti portanti
CN113356627A (zh) * 2020-03-04 2021-09-07 中国建筑科学研究院有限公司 一种既有建筑摩擦滑移加固结构及其施工方法
CN113356627B (zh) * 2020-03-04 2022-07-19 中国建筑科学研究院有限公司 一种既有建筑摩擦滑移加固结构及其施工方法

Also Published As

Publication number Publication date
EP1607547B1 (de) 2007-06-06
DE602004006849T2 (de) 2008-02-07
DE602004006849D1 (de) 2007-07-19
ATE364115T1 (de) 2007-06-15

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