US3552080A - Method for erecting multistory buildings - Google Patents

Method for erecting multistory buildings Download PDF

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Publication number
US3552080A
US3552080A US792465*A US3552080DA US3552080A US 3552080 A US3552080 A US 3552080A US 3552080D A US3552080D A US 3552080DA US 3552080 A US3552080 A US 3552080A
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Prior art keywords
slabs
slab
stack
steel
flooring
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Expired - Lifetime
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US792465*A
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English (en)
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Hristo Ivanov Gretchenliev
Gueorgui Stanoev Dimitrov
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NISI
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NISI
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
    • E04B1/3511—Lift-slab; characterised by a purely vertical lifting of floors or roofs or parts thereof

Definitions

  • This invention relates to a method of erecting multistory buildings by simultaneously lifting, to their final positions precast floor slabs and roof structures and their supporting precast bearing columns.
  • a method for erecting multistory buildings wherein the lifting of the flooring slabs, upon casting at the construction site, is carried out successively, i.e. one-by-one or not more than two flooring slabs in a single lifting operation.
  • the lifting is carried out by the use of service or bearing steel stanchions or reinforcedconcrete columns, the last being as high as the number of stories.
  • This method is popularly known as the liftslab method.
  • the lifting of the flooring slabs is accomplished by means of special lifting equipment.
  • the method is characterized also by providing apertures in the floor slabs, intended for receiving steel collars and by the use of bearing columns as high as two or more stories.
  • This known method has several disadvantages. For example, an increased need for profiled steel. It is necessary to utilize for the erection of said bearing columns some assembly means, such as lorry-mounted cranes or the like. Furthermore, the successive lifting of the floor slabs necessitates a provisional prop up of every slab in its final position.
  • the main object of the present invention is to overcome the above drawbacks of the known methods for erecting multistory buildings and more particularly the high requirements for steel profiles.
  • the devices of the present invention it is possible to lift simultaneously, i.e. in the form of a stack, all the floor slabs and the roof-structure slab of the building and to prop up every flooring slab and the roof structure by means of precast reinforced bearing columns, each as high as the clear height between the floors of the building.
  • the devices used in the present invention comprise provisional stock steel stanchions, provisional stock steel parts for forming small Patented Jan. 5, 1971 apertures in the flooring slabs and for the independent suspension of the flooring slabs on the lifters and a set of special lifting equipments.
  • the key feature of the invention is that the flooring slabs are cast without openings in the area of the bearing columns, so that the reinforcement of the flooring slabs is not interrupted in these areas. With such construction there is no need to embed in the concrete a heavy steel collar, as hitherto provided for securing the flooring slabs on the bearing columns. Furthermore, it is possible to erect the single bearing columns, being of a reduced height and light in the weight, by means of the usual mobile equipment, such as a mounting carriage, a small mounting crane or the like present at construction sites.
  • Each slab surface is sprayed or covered with a separating medium, such as shuttering oils, paraifin, paper or the like, in order to prevent adhesion.
  • a separating medium such as shuttering oils, paraifin, paper or the like.
  • all vertical blocks of the building such as the staircases, the lift shafts or the like, are built up.
  • provisional stock-steel stanchions are mounted on both sides of every bearing column of the building, the stanchions being as high as the respective stories plus the thickness of the stacked slabs and the technological clearance.
  • the lifting equipment which is of a type used particularly for this purpose, is mounted upon the erected provisional stock steel stanchions.
  • the Whole stack of precast on the site flooring slabs together with the roof structures are raised, as high as the projected top level of the first story.
  • the bearing columns of the respective first story are erected then in their final position by means of a movable mounting carriage.
  • the bearing columns are as high as the clear height of the respective story.
  • the erection of all bearing columns of the first story being completed, the stack of the slabs and the roof structure are dropped down to abut on the bearing columns.
  • the lowermost slab of the stack is released.
  • the flooring slab of the first story lies upon the bearing columns as erected.
  • Steel parts embedded on the top and the lower ends of the bearing columns during the casting, are now welded by means of intermediate steel plates to other steel-made members, which have been embedded previously in the concrete of the floor slabs.
  • the provisional stock steel stanchions are pulled through small apertures provided in the flooring slabs, in a further mounting position, by means of a small auxiliary crane Without dismounting the main lifting equipment.
  • the set up of the face and partition walls of the building is carried out after the erection of every story, said walls being of brick masonry or of wall panels.
  • the other interior work can be also done.
  • the roof structure of the building can be lifted and erected in a sloped position, so that the roof of the building can have one or two slopes.
  • This characteristic feature of the invention is due to the fact, that the bearing columns of the building do not extend through the flooring slabs.
  • the devices used for the realization of the present method comprise provisional stock mounting steel stanchions; steel cups used as supporting means for the erection of the provisional steel stanchions upon the foundation blocks; steel tubes, used as opening means which provide openings in the flooring slabs for the drawing of the provisional steel stanchions, as hereinbefore described; steel pins used as means for providing apertures in the flooring slabs for centering the bearing columns during erection; steel beams for supporting the provisional steel stanchions upon the bearing columns; and the so-called garlands used as suspending means for the stacked flooring slabs and the roof structure on the lifting equipment.
  • a garland comprises a plurality of steel-made cylindrical hollow bodies, provided with an internal thread and a respective number of flanges, the single cylindrical body and the flange thereon being bolted internally to the adjacent cylindrical body by means of a nipple, so that a determined number of hollow bodies bolted together with their respective flanges one on the top of the other form a linked device or the so-called garland.
  • the garland members used as suspending means are embedded on casting in the stacked flooring slabs.
  • FIG. 1 is a front elevational view of the entire set of auxiliary and special parts mounted upon the uppermost foundation block;
  • FIG. 2 is a front elevational view of a stack of floor slabs for a four-story building, with a single staircase;
  • FIG. 3 is a front elevational view of the stack of flooring slabs, the staircase and the lifting equipment mounted upon the steel stanchions;
  • FIG. 4 is a front elevational view of the staircase of the building and the stack of flooring slabs positioned upon the top level of the first story, as well as of the bearing columns in their final positions.
  • FIG. 5 is a front elevational view illustrating the prop ring of the steel stanchions during the erection of the second floor
  • FIG. 6 is a front elevational view showing an operative position, after the erection of the first floor.
  • FIG. 7 is a front elevational view of the building after the erection of the flooring slabs and the roof structure.
  • the building to be erected is a four-story structure, with a single staircase and 24 bearing columns founded on single independent foundation blocks 1.
  • the stock steel stanchions 5 and lifting equipment 6 are mounted after pouring of the flooring slabs and the roof structure and after the erection of the staircase 4.
  • the stock steel stanchions are secured by means of provisional connecting means 8.
  • FIG. 4 at operating the lifting equipment 6 the whole stack comprising the flooring slabs and the roof structure is lifted as high as 3-5 cm.
  • the bearing columns 10 are thrust under the lowermost flooring slab 13 and are erected in their final position by means of a movable mounting carriage 9.
  • the bearing columns are secured in their final position by means of the studs 11, located in the centering holes formed in the flooring slabs on casting, by means of the auxiliary stock parts 20.
  • the stack of slabs is dropped down to abutment on the bearing columns 10.
  • the lower most elements of the garlands 3 are dismantled and the flooring slab 13 is detached from the stack.
  • the connecting parts, not shown in the drawings, which are previously embedded on both end side of the bearing columns 10 and also in the flooring slabs more particularly in the areas of the bearing columns are welded together by means of auxiliary intermediate plates, not shown, in order to secure the whole structure.
  • the margins between the individual slabs and the staircase are filled with concrete cast in situ in order to secure the structure of the building against horizontal reaction, such as wind forces and earthquake.
  • the stock steel stanchions 5 are pulled out through the holes providel by the auxiliary stock parts, the calibres 2b, by means of a movable mounting crane and are secured in a further mounting position, as shown in FIG. 6, being supported here by means of the stock transversal beams 12 upon the already stabilized bearing columns 10 of the preceding floor. In such a manner all the flooring slabs 13 and the roof structure of the four-story building are erected in their final positions, as shown in FIG. 7.
  • the roof structure can be single or double.
  • a method of erecting a multistory structure comprising the steps of:
  • step (d) elevating the remainder of said stack while supporting same on the columns erected in step (c) by members extending through said slabs to position the lowermost slab of the remainder of said stack at a level slightly above that corresponding to the position of said second tier, disposing supporting columns between the originally lowermost slab and said lowermost slab of the remainder of said stack and securing the latter slab to the corresponding column;
  • each of said slabs is secured to the principal columns by embedding steel bodies in said slabs and welding said bodies to said columns.
  • a method of erecting a multistory structure comprising the steps of:

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
US792465*A 1968-01-25 1969-01-21 Method for erecting multistory buildings Expired - Lifetime US3552080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG929868 1968-01-25

Publications (1)

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US3552080A true US3552080A (en) 1971-01-05

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ID=3897283

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US792465*A Expired - Lifetime US3552080A (en) 1968-01-25 1969-01-21 Method for erecting multistory buildings

Country Status (8)

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US (1) US3552080A (de)
AT (1) AT306316B (de)
CH (1) CH516052A (de)
CY (1) CY644A (de)
DE (1) DE1903550A1 (de)
GB (1) GB1257705A (de)
NL (1) NL6901261A (de)
SE (1) SE352913B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301630A (en) * 1979-08-08 1981-11-24 Burkland Raymond A Method and apparatus for lift-slab building construction
US5839239A (en) * 1996-04-04 1998-11-24 Jang; Byung K. Apparatus and method for building construction
US20080016805A1 (en) * 2006-07-19 2008-01-24 Richard Walter Truss lock floor systems and related methods and apparatus
US20120023840A1 (en) * 2009-04-10 2012-02-02 Bin Yuan Main Work Construction Method for Reinforced Concrete Building and Building Construction Machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU191367B (en) * 1982-11-30 1987-02-27 Epitestudomanyi Intezet,Hu Apparatus and method for producing monolithic ceilings
CN1080801C (zh) * 1996-10-07 2002-03-13 邓庚厚 一种由上往下建造建筑物的顶升式建筑法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301630A (en) * 1979-08-08 1981-11-24 Burkland Raymond A Method and apparatus for lift-slab building construction
US5839239A (en) * 1996-04-04 1998-11-24 Jang; Byung K. Apparatus and method for building construction
US20080016805A1 (en) * 2006-07-19 2008-01-24 Richard Walter Truss lock floor systems and related methods and apparatus
US20120023840A1 (en) * 2009-04-10 2012-02-02 Bin Yuan Main Work Construction Method for Reinforced Concrete Building and Building Construction Machine
US8863474B2 (en) * 2009-04-10 2014-10-21 Bin Yuan Main work construction method for reinforced concrete building and building construction machine

Also Published As

Publication number Publication date
SE352913B (de) 1973-01-15
NL6901261A (de) 1969-07-29
CY644A (en) 1972-06-08
CH516052A (de) 1971-11-30
DE1903550A1 (de) 1969-08-28
GB1257705A (de) 1971-12-22
AT306316B (de) 1973-04-10

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