EP4253297A1 - Échafaudage auxiliaire et procédé de rééquipement d'un bâtiment avec un ascenseur - Google Patents

Échafaudage auxiliaire et procédé de rééquipement d'un bâtiment avec un ascenseur Download PDF

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Publication number
EP4253297A1
EP4253297A1 EP23162099.8A EP23162099A EP4253297A1 EP 4253297 A1 EP4253297 A1 EP 4253297A1 EP 23162099 A EP23162099 A EP 23162099A EP 4253297 A1 EP4253297 A1 EP 4253297A1
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EP
European Patent Office
Prior art keywords
stairwell
building
facade
auxiliary
attached
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
EP23162099.8A
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German (de)
English (en)
Inventor
Manfred Greschbach
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Individual
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Individual
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Publication date
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Publication of EP4253297A1 publication Critical patent/EP4253297A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00—Mining-hoist operation
    • 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
    • E04G23/0266—Enlarging

Definitions

  • the invention relates to a method for retrofitting a building with an elevator system according to the preamble of claim 1 and to an auxiliary scaffolding for use in such a method.
  • This process is used to retrofit a building that has multiple floors. These each have at least one floor door, with the floor doors being accessible via a common staircase.
  • the stairwell lies within the building shell and borders on a front side of the building, so that that section of the building shell front side that coincides with the front side of the stairwell forms a stairwell facade.
  • Each floor of the building has a main landing for the floor doors in the stairwell. Between each floor there is an intermediate landing arranged on the stairwell facade for a two-flight staircase, which connects the intermediate landings and the main landings.
  • Elevator systems for attachment to a building or for retrofitting a building are usually used in older buildings where barrier-free access has not yet been taken into account.
  • older residential buildings with a number of residential units spread over several floors, but also administrative buildings and commercial buildings, are often built in the construction method mentioned at the beginning; They have a plurality of floors, which are divided in particular into several residential units or other self-contained units and have corresponding floor doors that are accessible via a common staircase.
  • This design integrates the staircase at the front of the building, with an entrance door at ground level and a two-flight staircase that provides access to all floor doors via intermediate landings and main landings on each floor.
  • a method for retrofitting a building with an elevator system in which a prefabricated elevator system is placed on a foundation in front of the stairwell facade.
  • the front of the building is opened by removing the stairwell facade and a one-piece or multi-part frame is placed on the stairwell facade, with the frame being equipped with one elevator platform that is essentially stairwell-wide at the height of the main landing of the stairwell on each floor.
  • This frame is an assembled outer platform element, each of which is designed floor-high as a table-shaped prefabricated element with a plate-shaped outer platform and several table leg-like supports.
  • the intermediate platforms of the stairwell are removed and the two-flight staircase is dismantled.
  • Bridges are then installed in the stairwell, which extend horizontally from the main landings to the elevator landings and only partially cover the floor plan of the stairwell in projection in order to leave clear space for a single-flight staircase that connects the main landings and the elevator landings.
  • the prefabricated elevator system is then placed on the staircase prepared in this way, which is now provided with a single flight of stairs, aligned and connected to the elevator platforms or the external platform elements.
  • the result is a stairwell in which the doors of the elevator system are connected to the floor doors via the elevator platforms, the walkways and the main platforms and are therefore barrier-free.
  • the present invention is based on the prior art described above, and it has been found that the time required to remove the stairwell facade is in need of improvement. In addition, it is difficult and therefore time-consuming to detach the stairwell facade from the building, which is usually done with concrete saws, with the dimensional accuracy required for the further process steps.
  • the present invention is therefore based on the object of improving a method of the type described above with regard to the time required for the construction work on site.
  • a further object is to provide an auxiliary framework for use in such a procedure.
  • the elevator platforms are not prefabricated together with the elevator system and placed together with it on the front of the building and connected to the walkways, but are installed separately in the stairwell or if necessary , such as in the prior art according to DE 203 00 662 U1 described, with frames, or, modifying the state of the art in this respect, a single frame, placed on the foundation and attached to the webs.
  • the prefabricated elevator system is then placed on the foundation and attached to the elevator platforms.
  • the elevator platforms can be installed together with the webs, as is the case, for example, in the prior art EP 3 712 355 A1 was proposed. All of these alternatives are within the scope of the present invention and some are already known.
  • the essential novelty of the method according to the invention lies in method step (i), after which for method steps (b) or (c) or (d), i.e. for opening the front of the building by removing the stairwell facade and / or for removing the intermediate landings
  • An auxiliary scaffolding is attached to the front of the building.
  • auxiliary scaffolding which can also be attached to the front side of the building before step (a), i.e. before attaching a foundation
  • the time required to remove the stairwell facade can be significantly shortened.
  • concrete saws are used to remove the stairwell facade, with which the stairwell facade is separated from the rest of the front of the building.
  • the cuts that the concrete saws make in the front of the building must be made precisely, which requires additional, complex quality assurance measures.
  • the auxiliary scaffolding is used to guide at least one saw for removing the stairwell facade, in particular by providing a saw template on the auxiliary scaffolding, which greatly simplifies the guidance of the saw and ensures the required exact cut through the front of the building.
  • the auxiliary scaffolding is attached to the stairwell facade to be removed and removed piece by piece together with it.
  • the auxiliary scaffolding therefore holds the parts of the stairwell facade that are already separated from the rest of the front in place until the auxiliary scaffolding is separated piece by piece at predetermined locations or as required and together with the stairwell facade pieces attached to it that are separated from the front of the building, for example by means of a lifted out by crane and stored properly. Additional security measures are simplified accordingly or even become unnecessary.
  • the intermediate landing together with the stairwell facade can be separated from its side anchors using a concrete saw, so that it, If necessary, after the stair sections have been separated, it is only attached to the stairwell facade and the auxiliary scaffolding. It can then be removed piece by piece from the stairwell together with the stairwell facade and the auxiliary scaffolding. This also speeds up the process and simplifies the security measures.
  • the auxiliary scaffolding is provided with hinges for pivoting individual sections. Because then these pivotable sections of the auxiliary scaffolding can each be swung out of the stairwell facade together with separated pieces of the stairwell facade to which the auxiliary scaffolding has been attached, and / or together with separated intermediate platforms and, after loosening the hinges, removed in particular by means of a crane. This simplifies the removal of detached pieces of the stairwell facade and, if necessary, the intermediate landings with a crane that grasps the detached pieces from above, but is thereby hindered by the roof and the eaves of the building. If detached pieces are swung forward away from the front of the building together with the pivotable sections of the auxiliary scaffolding, these parts can be attached much more easily to a conventional telescopic crane of a crane vehicle or a tower crane.
  • a further preferred simplification and acceleration of the removal of the stairwell facade results when a mast-guided climbing platform attached to the auxiliary scaffolding is used, namely for opening the front of the building by removing the stairwell facade, or alternatively or additionally for the removal of the intermediate platforms and the double-flight Staircase, or alternatively or additionally for the installation of bridges in the stairwell, or alternatively or additionally for the installation of the single-flight staircase.
  • the mast-guided climbing platform which moves guided by the auxiliary scaffolding and is preferably also supported on it, enables safe work without additional time-consuming measures, such as setting up scaffolding or providing and operating a vehicle-based lifting platform.
  • sword saws can be used to cut out the stairwell facade, which are attached to the climbing platform and guided by it with corresponding precision. If these sword saws are dimensioned with the length of their sword in such a way that when the climbing platform is moved on the auxiliary scaffolding, not only a cut through the stairwell facade but also detach the intermediate landings from their side anchors, this results in a particularly time-efficient and effortless removal of the stairwell facade and the intermediate landings.
  • the mast-guided climbing platform which is preferably attached to the auxiliary scaffolding, it is also possible to use an industrial robot to remove the stairwell facade or, if necessary, the stairwell facade together with the intermediate landings and / or stair sections; This industrial robot can easily be installed on the climbing platform and carry out the necessary sawing work from there.
  • a further preferred embodiment of the method according to the invention consists in measuring the geometric dimensions of the stairwell before method step (a) and then prefabricating a foundation frame corresponding to the dimensions of the stairwell, which in particular consists of at least one steel material, the prefabricated foundation frame being used during the manufacture of the foundation in process step (a) is used at least as part of the foundation.
  • this foundation frame is provided with mounting points or mounts for the prefabricated elevator system and for the auxiliary scaffolding.
  • the auxiliary scaffolding according to the invention can then be placed on the foundation frame and, if necessary, connected to it in order to be able to support itself securely on the foundation.
  • the placement points or receptacles for the auxiliary scaffolding on the foundation frame ensure that the auxiliary scaffolding is set up exactly according to the plans, i.e. it does not have to be laboriously aligned on site during the construction work; Alignment errors are also avoided.
  • auxiliary scaffolding is used as a saw template or to guide the saws using, for example, a climbing platform
  • precise alignment of the auxiliary scaffolding is essential. This is done with the use of a foundation frame corresponding to the geometric dimensions
  • the stairwell is prefabricated in a time-efficient manner.
  • the staircase is preferably measured with reference to at least two reference points and the foundation frame is aligned on site with the help of these reference points on the staircase facade.
  • two points on the front of the building in the area of the ground, i.e. near the ground, or on the ground, or below the ground surface are selected as reference points and the foundation frame is attached directly or indirectly to these reference points.
  • the foundation frame is correctly aligned practically automatically, so it cannot be incorrectly installed in the foundation, which then ensures the alignment of the auxiliary scaffolding just as easily and expediently.
  • the second object on which the present invention is based is achieved by an auxiliary scaffolding for use in the method according to the invention, in that the auxiliary scaffolding has attachment points for attaching to the stairwell facade or to the front of the building, i.e. next to the stairwell facade. Preferably it is with hinges for pivoting sections to enable parts of the stairwell facade that have already been detached to be swiveled out, possibly together with the intermediate landings.
  • hinges are preferably separable in order to be able to easily detach the swung-out sections from the rest of the auxiliary scaffolding and, for example, hang them on a crane.
  • the auxiliary framework is preferably made essentially of at least one steel material and is preferably provided with a saw template.
  • FIG. 1 shows building 1 still in its original position:
  • Building 1 includes a basement 2 and four floors 3, 3.1, 3.2, 3.3 as well as an attic 3.4.
  • In the stairwell facade 8 there are windows 9 for illuminating the stairwell 5 and a front door 10.
  • the stairwell 5 is bounded at the top by a roof 11.
  • the front door 10 leads to a first intermediate landing 12, from which the main landing 6 for the first floor 3, which forms the ground floor, can be reached via a first stair section 13 of a two-flight staircase.
  • a second stair section 14 of the two-flight staircase leads from the intermediate landing 12 to the basement 2.
  • the two-flight staircase of the stairwell 5 connects to its first half of the staircase, which consists of the first stair sections 13.1, 13.2..., and its second half of the staircase, which is formed from the second staircase sections 14.1, 14.2..., the main landings 6, 6.1, 6.2..., each via intermediate landings 12, 12.1, 12.2... between the floors.
  • the intermediate landings 12, 12.1, 12.2... adjoin the stairwell facade 8 from the inside.
  • a foundation 15 has already been made in front of the stairwell facade 8.
  • This foundation 15 consists of a prefabricated foundation frame 16 made of steel, which transfers its load into the ground via bored piles 17 in the form of a pile foundation. These drilled piles 17 were inserted into the ground in a manner known per se, after placing and aligning the foundation frame 16, using appropriate drilling templates that are present in the foundation frame 16.
  • FIG. 2 shows this in a top view from above:
  • the foundation frame specifies the places in which the bored piles 17 are placed in the ground. In particular, this can also be done in such a way that the bored piles 17 are placed outside the area in front of the stairwell 5 of the building 1 in which supply lines lead into the building 1.
  • the foundation frame 16 can be made significantly wider and the bored piles 17 can be attached to locations that are to the right and left of the stairwell 5.
  • the foundation frame 16 is attached to two reference points 18 on the front 7 of the building 1. These reference points 18 were also the reference points for carefully measuring the stairwell 5 in order to be able to prefabricate the foundation frame 16, but also all other auxiliary devices and installations for the stairwell 5, with precise dimensions.
  • the foundation frame 16 is automatically correctly aligned, then using recordings and attachment points (in Figure 2 not shown) in particular to align a prefabricated elevator system exactly towards the stairwell 5 when setting it up on the foundation frame 16.
  • a pivot bearing 19 for a stairwell module (not shown here) can be seen, the pivot bearing 19 being produced together with the foundation frame 16 during prefabrication or being firmly connected to it.
  • the foundation frame 16 is also provided with support points for an auxiliary scaffolding 20, so that this auxiliary scaffolding 20 can also be positioned exactly aligned with the front side 7 of the building 1 with respect to the reference points 18. Shows more about this Figure 3 :
  • FIG. 3 a section of the front 7 of the building 1 is shown in a side view.
  • the auxiliary scaffolding 20 consists of five sections, each of which is formed from steel rails 21 and is connected to one another with releasable hinges 22. A number of cross struts 23 ensure stabilization and complete the steel rails 21 to form the auxiliary scaffolding 20.
  • the auxiliary scaffolding 20 stands on corresponding mounting points of the foundation frame 16.
  • the individual sections of the auxiliary scaffolding 20 have each been attached to the stairwell facade 8 using dowels 24, the dowels, as in Figure 1 can be seen, where an intermediate platform 12 is arranged behind the stairwell facade 8, extending into the intermediate platform 12.
  • the individual, floor-high sections of the auxiliary scaffolding 20 are each firmly connected to a floor-high section of the stairwell facade 8 and the associated intermediate platform 12.
  • a climbing platform 25 runs on the steel rails 21 of the auxiliary scaffolding 20. How better in turn Figure 1 can be seen, two concrete saws 26 sit on this climbing platform 25 in order to separate the stairwell facade 8 from the rest of the front 7 of the building 1. The saw cut runs vertically and is guided by the climbing platform 25 and thus by the precisely aligned auxiliary scaffolding 20.
  • the saw bar of the concrete saw 26 is chosen so long that not only the stairwell facade 8 is cut off, but also the intermediate platforms 12, which from then on are only held on the auxiliary scaffolding 20 by means of the dowels 24.
  • Figure 1 is on the fourth floor 3.3 (3rd floor). shown how an already separated section of the stairwell facade 8 together with the intermediate platform 12 hanging on it has been pivoted forward, away from the front side 7 of the building 1, by means of the auxiliary scaffolding 20 which can be swung out on the hinge 22 and therefore with the help of a crane 27, after loosening of the hinge 22, can be lifted away from the building 1 and placed in a designated storage location. Meanwhile, the concrete saws 26 continue to run with a further downward movement of the climbing platform 25 in order to cut out the stairwell facade 8 in a highly time-efficient manner.
  • Figure 4 shows building 1 Figure 1 in a later stage of the process.
  • the foundation 15 is prefabricated by the foundation frame 16 and Setting bored piles 17 and by aligning and fastening the foundation frame 16 to the reference points 18 (see also Figure 1 ) has been manufactured
  • the auxiliary scaffolding 20 has been attached to the stairwell facade 8 and has been successively removed in sections together with separated pieces of the stairwell facade 8 (also Figure 1 ), and in the old staircase 5 both the intermediate landings 5 and the two-flight staircase sections 13, 14 have been removed, as in Figure 4 to see, in stairwell 5 only the main landings 6... remained; the stairwell facade 8 has been removed and the stairwell 5 is therefore open to the front.
  • a prefabricated stairwell module 28 which is shown here schematically twice, i.e. at different points in time, is brought to the construction site by means of a truck (not shown here) and placed on the foundation 15.
  • the prefabricated staircase module 28 has two bearing points 29 with which it is pivotally fastened in the pivot bearings 19 of the foundation frame 16. With the help of the crane 27, the stairwell module 28 is then pivoted into the stairwell 5 about a pivot axis defined by the pivot bearings 19, as indicated by an arrow for the pivoting direction 30.
  • the stairwell module 28 could be prefabricated in a coordinate system adapted to the specific conditions of the building 1, with the pivot bearings being precisely aligned in advance 19 ensure an exact alignment of the stairwell module 28 to the specific stairwell 5, so that no on-site adjustment measures are necessary when the stairwell module 28 is swiveled in.
  • FIG. 5 a partially sectioned top view of the stairwell 5, also illustrates the stairwell module 28 with single-flight stair sections 31, webs 32 and one designed as a railing 37 Supporting structure prefabricated so that it can be transported with a conventional truck, i.e. in particular together with the truck is not higher than 4 m.
  • This is made possible by the fact that both the single-flight stair sections 31 and the webs 32 are provided with hinges, whereby the single-flight stair sections 31 are divided into a fixed stair section 33 and a foldable stair section 34.
  • the webs 32 are accordingly also divided into a fixed web section 35 and a foldable web section 36.
  • both the foldable stair sections 34 and the foldable web sections 36 are folded down, as shown in Figure 4 is shown.
  • the railing 37 is also divided by means of hinges into a fixed railing section 38 and a folding railing section 39, the folding railing section 39, as shown in Figure 5 is best visible, is also folded down for transport in order to minimize the overall height of the stairwell module 28.
  • a fully functional, prefabricated elevator system 41 which is already equipped with elevator platforms 42 and an elevator car 44, is driven to the construction site with a truck 43 and, with the help of the crane 27, is placed on the foundation 15, more precisely: on defined and reference points 18 precisely aligned contact points of the foundation frame 16 are set up.
  • the elevator platforms 42 now rest on the webs 32 and single-flight stair sections 31 of the stairwell module 28 without further alignment and can be connected to them.
  • Figure 7 shows a view of building 1 as in Figure 1 , wherein the method according to the invention for retrofitting the building 1 with the elevator system 41 is completed.
  • People who travel in the elevator car 44 to a specific floor 3.3, in this case the 1st floor can reach the main landing 6 of the 1st floor barrier-free from the elevator system 41 via the associated elevator platform 42 and the associated footbridge 32.
  • the individual floors can be reached on foot via single-flight stair sections 31, each of which runs from a main landing 6 to an elevator landing 42 on the adjacent floor.

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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)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP23162099.8A 2022-03-30 2023-03-15 Échafaudage auxiliaire et procédé de rééquipement d'un bâtiment avec un ascenseur Pending EP4253297A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022107586.9A DE102022107586A1 (de) 2022-03-30 2022-03-30 Hilfsgerüst und Verfahren zum Nachrüsten eines Gebäudes mit einer Aufzugsanlage

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EP4253297A1 true EP4253297A1 (fr) 2023-10-04

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EP23162099.8A Pending EP4253297A1 (fr) 2022-03-30 2023-03-15 Échafaudage auxiliaire et procédé de rééquipement d'un bâtiment avec un ascenseur

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EP (1) EP4253297A1 (fr)
DE (1) DE102022107586A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19633636A1 (de) 1996-08-21 1998-02-26 Grohs Gerwald Dipl Bauing Aufzugsschächte, Aufzugskabine und Verbindungsgänge als Raumzelle
DE20300662U1 (de) 2003-01-16 2003-04-10 Bwh Construction Gmbh Baukonstruktion zur nachträglichen Anbindung eines Außenaufzuges an ein Treppenhaus eines mehrgeschossigen Gebäudes
EP3315448A2 (fr) 2016-10-28 2018-05-02 Manfred Greschbach Installation d'ascenseur
EP3712355A1 (fr) 2019-03-20 2020-09-23 Manfred Greschbach Procédé d'équipement ultérieur d'un bâtiment d'une installation d'ascenseur et ensemble de composants destiné à la mise en uvre du procédé
EP3978707A2 (fr) * 2020-09-30 2022-04-06 Manfred Greschbach Procédé d'équipement ultérieur d'un bâtiment avec un ascenseur et tour d'ascenseur préfabriquée et transportable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19633636A1 (de) 1996-08-21 1998-02-26 Grohs Gerwald Dipl Bauing Aufzugsschächte, Aufzugskabine und Verbindungsgänge als Raumzelle
DE20300662U1 (de) 2003-01-16 2003-04-10 Bwh Construction Gmbh Baukonstruktion zur nachträglichen Anbindung eines Außenaufzuges an ein Treppenhaus eines mehrgeschossigen Gebäudes
EP3315448A2 (fr) 2016-10-28 2018-05-02 Manfred Greschbach Installation d'ascenseur
EP3712355A1 (fr) 2019-03-20 2020-09-23 Manfred Greschbach Procédé d'équipement ultérieur d'un bâtiment d'une installation d'ascenseur et ensemble de composants destiné à la mise en uvre du procédé
EP3978707A2 (fr) * 2020-09-30 2022-04-06 Manfred Greschbach Procédé d'équipement ultérieur d'un bâtiment avec un ascenseur et tour d'ascenseur préfabriquée et transportable

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