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WO2009123600A1 - Tour de cage d’escalier modulaire en béton préfabriqué - Google Patents

Tour de cage d’escalier modulaire en béton préfabriqué Download PDF

Info

Publication number
WO2009123600A1
WO2009123600A1 PCT/US2008/007051 US2008007051W WO2009123600A1 WO 2009123600 A1 WO2009123600 A1 WO 2009123600A1 US 2008007051 W US2008007051 W US 2008007051W WO 2009123600 A1 WO2009123600 A1 WO 2009123600A1
Authority
WO
WIPO (PCT)
Prior art keywords
stairwell
tower
walls
unit
units
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.)
Ceased
Application number
PCT/US2008/007051
Other languages
English (en)
Inventor
Vincent Combs
James J. Griffin
Benson T. Rhoads
David J. Settles
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.)
MV Commercial Construction LLC
Original Assignee
MV Commercial Construction LLC
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 MV Commercial Construction LLC filed Critical MV Commercial Construction LLC
Publication of WO2009123600A1 publication Critical patent/WO2009123600A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/104—Treads
    • E04F11/116—Treads of stone, concrete or like material or with an upper layer of stone or stone like material, e.g. ceramics, concrete; of glass or with an upper layer of glass
    • 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
    • E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability

Definitions

  • the steel stairway has step pans and a landing pan
  • concrete is manually poured into the steel pans forming the steps of the stairway and also into the steel pan forming the landing for the stairway halfway between adjacent floors.
  • vertical metal studding is usually installed onto the steel frame members defining the stairwell space for the building and around the stairways and landings to define the stairwell shaft.
  • the stairwell shaft is then lined with drywall or other fire resistant sheets, and handrails are installed for the steps for each floor so that the stairwell is essentially completed except for final finishing.
  • the present invention is directed to the construction of a modular stairwell tower which is preferably constructed prior to erecting the steel frame members for a multi-story building having a number of floors.
  • the tower includes a series of precast concrete stairwell units arranged in a stack with the number of stairwell units corresponding to twice the number of floors in the building.
  • Each of the stairwell units includes a precast concrete tower section having vertical opposite side walls and vertical opposite end walls defining an open bottom and an open top.
  • the walls of each tower section have a vertical height generally equal to one half the vertical distance between two successive floors of the building, and each stairwell unit includes a preformed or precast inclined stairway connected to one of the side walls of the corresponding tower section.
  • a preformed or precast horizontal platform is located adjacent an upper end of the inclined stairway in each tower section and is connected to the side walls and one of the end walls to form a stairway landing.
  • Each of the stairwell units is horizontally oriented one hundred eighty degrees relative to each adjacent stairwell unit in the stack, and one of the walls of each alternate stairwell unit in the stack defines a doorway opening.
  • Anchor members project into and are embedded in upper and lower portions of the walls of each of the stairwell units, and the anchor members in the lower portions of the bottom stairwell unit are rigidly connected, such as by welded plates, to anchor members embedded in a concrete support floor or base for the stairwell tower.
  • Anchor members in the upper portions of the walls are rigidly connected, such as by welded plates, to the anchor members in the lower portions of the walls of the adjacent stairwell unit thereabove.
  • the modular stairwell tower of the invention provides for efficiently precasting the stairwell units away from the building site and for conveniently erecting or stacking the stairwell units with a crane.
  • Structural steel frame members for the building may be subsequently attached to the erected stairwell tower, thereby providing stability and rigidity for the steel frame members as they are being erected. This attachment eliminates the need for a significant number of steel frame members used for bracing the steel frame as it is being erected.
  • the modular stairwell tower of the invention also provides for convenient and safe access to all floors of the building as it is being constructed, thereby providing protection to the steel frame erection crew.
  • the modular precast concrete stairwell tower further provides for fire rating without the need for dry wall or masonry and may be prime finished at the precasting facility or factory.
  • fire line stand pipes may be installed within the stairwell tower to provide for fire protection during construction of the building.
  • the construction of the stairwell tower prior to erecting the steel frame members for the building also enables workers to move tools and materials from floor to floor quickly and conveniently, thereby providing a savings in labor for constructing the building.
  • the construction of the modular stairwell tower before erecting the frame members further eliminates the need for ladders and scaffolding and temporary railings during erection of the steel frame, further enhancing the safety aspect of the overall construction process.
  • FIG. 1 is a perspective view of the multi-story commercial building having three modular stairwell towers constructed in accordance with the invention and showing in phantom the outline for the steel frame for the building;
  • FIG. 2 is a perspective view of two precast concrete stairwell modules or units and illustrating the stacking of a second unit onto a first floor unit;
  • FIG. 3 is a fragmentary vertical section through one of the stairwell towers, taken generally on the line 3-3 of FIG. 1 ;
  • FIG. 4 is a horizontal section of a stairwell tower, taken generally on the line 4-4 of FIG. 3;
  • FIG. 5 is a perspective view of a typical precast concrete stairwell module or unit used in each of the stairwell towers shown in FIG. 1 , and being transported by an overhead crane with attached temporary bracing;
  • FIG. 6 is a fragmentary perspective view of a precast concrete stairwell unit and illustrating the forms and reinforcement used for forming a precast concrete stairway and horizontal landing;
  • FIG. 7 is a fragmentary vertical section through a precast concrete stairwell unit and illustrating the location of steel reinforcing bars within the concrete;
  • FIG. 8 is a perspective exploded view of anchor members embedded within corresponding walls of two adjacent stairwell units and with the connection member;
  • FIG. 9 is a fragmentary vertical section through the embedded wall anchors shown in FIG. 8 after being connected by the connection member;
  • FIG. 10 is a perspective exploded view of the anchor members and connector member for securing a wall of the bottom stairwell unit to the concrete floor support pad for the stairwell tower;
  • FIG. 11 is a fragmentary section similar to FIG. 9 and showing the connection of the anchor members shown in FIG. 10;
  • FIG. 12 is a fragmentary vertical section through a wall of a stairwell unit and showing an embedded anchor member used for attaching a horizontal steel frame member or beam to the stairwell tower after it is constructed.
  • FIG 1 illustrates a multi-story rectangular building 20 which will receive an erected metal frame system including vertical steel columns connected by horizontal steel frame members or beams.
  • the beams support corrugated steel floor panels onto which concrete is poured or pumped to form multiple concrete floors within the building.
  • the building 20 will have four floors, but it is to be understood that the building may have more or less floors.
  • each tower 25 includes a vertical stack of precast reinforced concrete stairwell modules or units 30 and 30'.
  • Each stairwell unit includes a rectangular precast reinforced concrete box-like tower section 35 and 35' formed by opposite side walls 38 and opposite end walls 42 defining an open top and an open bottom.
  • the primary difference between the tower sections 35 and 35' is that alternate tower sections 35 have full doorway openings 44 (FIGS. 1 , 4 and 5), and each tower section 35' has only a partial doorway opening 46. While the doorway openings 44 and 46 are illustrated in the end walls 42 of the tower sections 35 and 35', the doorway openings may be formed or cast in corresponding side walls 38.
  • the height of the side walls 38 and end walls 42 of the tower sections 35 and 35' is substantially equal to one half the vertical distance between two adjacent floors of the building 20.
  • the vertical height of the walls 38 and 42 may be approximately seven feet for a distance between floors of about fourteen feet.
  • Each tower section 35 and 35' has an overall length within the range of 18 feet to 25 feet and preferably about 21.5 feet, and an overall width within the range of 9 feet to 12 feet and preferably about 10.5 feet.
  • each of the stairwell units 30 and 30' includes a precast reinforced concrete inclined stairway 50 having steps 52 and a vertical height substantially equal to the vertical height of the walls 38 and 42 of the tower sections 35 and 35'.
  • Each stairwell unit 30 and 30' also includes a precast reinforced concrete horizontal platform 55 at the upper end of each stairway 50 and forming a stairway landing, as best shown in FIGS. 3 and 4.
  • the top surface of each platform or landing 55 is preferably flush with the top surfaces of the walls 38 and 42 of the corresponding tower section 35 and 35'.
  • the bottom surface of each stairway 50 is flush with the bottom surfaces of the corresponding walls 38 and 42.
  • the stairway 50 and platform 55 in each stairwell unit 30 and 30' has conventional steel reinforcing mats or bars, commonly referred to as rebars.
  • the horizontal rebars 58 in each stairway 50 are positioned under the steps 52 and have end portions projecting into corresponding holes 62 (FIG. 6) formed or drilled within the adjacent side wall 38 of the stairwell unit.
  • the end portions of the rebars 58 are secured by an adhesive such as epoxy within the holes 62 after the inclined step form member 65 and bottom form sheets 67 and support rail 68 are installed within the tower section.
  • an adhesive such as epoxy
  • FIG. 6 also shows the vertical form panel or member 82 and horizontal form panel 84 which are temporarily installed within each tower section to form the precast reinforced concrete landing platform 55.
  • Each platform 55 also has conventional concrete reinforcement mats or rods which include parallel spaced rebars 58 having end portions projecting into corresponding holes within the side walls 38 and end wall 42 where the end portions are secured by adhesive or epoxy. While only a portion of the reinforcing rods 58 are shown in FIG.
  • each stairwell tower 25 is supported by a poured reinforced concrete floor or base pad 95 which may have a thickness of several feet. Concrete is poured within a cavity formed within the ground and containing steel reinforcement mats and/or bars. The base pad 95 may be cast within a cavity in the ground before the bottom concrete floor is cast for the building 20.
  • each of the walls 38 and 42 of each tower section 35 and 35' have embedded anchor members 105 which are spaced at predetermined locations around the periphery of the tower section.
  • Each of the anchor members 105 includes a steel angle member 107 and a plurality of three reinforcing bars or rebars 109 welded to the horizontal flange of the angle member 107.
  • the concrete base or floor pad 95 also has anchor members 110 (FIG. 10) located under the walls 38 and 42 of the bottom stairwell unit 30.
  • Each anchor 110 includes a horizontal flat steel plate 112 and a set of four vertical reinforcing bars or rebars 114 having upper ends welded to the plate 112 and projecting downwardly into the base pad 95.
  • the anchor members 105 in the lower wall portions of the walls 38 and 42 of the stairwell unit 30 are aligned with the anchor members 110 embedded within the base pad 95, as shown in FIGS. 2 and 11.
  • each of the stairwell modules or units 30 and 30' includes an inclined metal fabricated handrail 130 which is rigidly secured to the corresponding stairway 50.
  • the anchor members 105 (FIGS. 8 & 9) within the lower portions of the walls 38 and 42 of the second stairwell unit 30' overlie the anchor members 105 embedded within the upper portions of the walls 38 and 42 of the bottom stairwell unit 30, as shown in FIGS. 8 and 9. Shims and then grout are inserted into the space 134 between the bottom surfaces of the walls 38 and 42 of the second stairwell unit 30" and the corresponding walls 38 and 42 of the bottom stairwell unit 30.
  • the adjacent anchor members 105 are then rigidly connected by a rigid connector member 138 in the form of a steel plate which is welded to the aligned vertical flanges of the anchor members 105, as shown in FIG. 9.
  • a U-shaped handrail section 140 is welded to the adjacent ends of the handrails 130 so that the handrails are continuous.
  • An inclined handrail 145 (FIG. 4) may also be preattached to the adjacent side wall 38 of each stairwell unit 30 and 30', and these handrails 145 are connected by a horizontal hand rail 148 attached to the end wall 42 above the landing platform 55. The above steps are repeated until all of the stairwell units 30 and 30' are assembled or erected to form the stairwell tower 25.
  • each of the precast concrete stairwell units 30 and 30' has substantially the same construction except for the doorway openings 44 and 46, and the height of each stairwell unit is essentially one half the vertical distance between two adjacent floors, each of the stairwell units 30' is rotated or horizontally oriented by 180 degrees with respect to the adjacent stairwell unit 30 therebelow.
  • one of the stairwell towers 25 may be provided at the top with an additional stairwell unit 30 in order to provide convenient access to the roof of the building 20 after it is constructed.
  • each of the towers 25 may serve as a rigid anchor for the steel frame members, thereby eliminating the need for a significant number of diagonal steel bracing members and shear members.
  • the precast concrete walls 38 and 42 of selected stairwell units 30 and 30' may be provided with embedded steel anchor members 152 each of which includes a vertical flat steel plate 154.
  • a set of horizontal anchor rods or bars 156 having head portions are welded to the plate 154 and project into the wall 38 or 42 at each location where it is desired to connect a horizontal steel beam or frame member 160.
  • An angular connector member or plate 162 is then welded to the plate 154 and the frame member 160 to form a rigid connection of the frame member to the wall.
  • a stairwell module or unit 30 is shown with a doorway opening 44 within an end wall 42.
  • a modular stairwell tower 25 and its method of construction in accordance with the invention provides desirable features and advantages. For example, by first constructing one or more of the stairwell towers at a building construction site, each tower provides the construction workers with convenient and safe access to all floors of the building during construction, and thereby provides protection for the erection crew for the steel frame as well as for the construction for the concrete floors.
  • the tower also eliminates the need for temporary ladders and scaffolding and temporary railings while erecting the steel frame.
  • Each of the stairwell units 30 and 30' may also be economically produced at a remote precast facility where bad weather does not stop production.
  • the steel frame members may be anchored to the tower or towers, thereby eliminating the need for many diagonal bracing frame members and shear wall bracing frame members within the building.
  • the steel workers may also use each stairwell tower for conveniently moving their tools and materials from floor to floor during erection of the steel frame for the building.
  • each stairway railing within each stairwell unit before stacking the units also substantially simplifies the installation of a railing system.
  • fire line stand pipes may be installed within the tower and connected to a water supply to facilitate fire protection during construction of the building.
  • each stairwell unit with a fabricated metal stairway and landing platform which are secured to the tower walls of each stairwell unit in the event that a precast concrete stairway and landing platform are not desired or required.
  • each of the stairwell units may have an oval configuration with rounded end walls instead of a rectangular configuration as shown in the drawings.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Ceramic Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

L'invention concerne un immeuble à plusieurs étages (20) construit en érigeant d'abord au moins une tour de cage d’escalier modulaire (25) sur un socle de base en béton (95). La tour comprend plusieurs unités de cage d’escaliers modulaires en béton préfabriqué alternant de façon horizontale (30, 30'), agencées par empilement et correspondant au double du nombre de planchers dans l'immeuble. Chaque unité de cage d’escalier comprend une section de tour en béton armé préfabriqué (35, 35') dotée de parois latérales opposées (38) et de parois d'extrémité opposées (42) définissant une partie supérieure ouverte et une partie inférieure ouverte et une hauteur généralement égale à la moitié de la distance verticale entre deux planchers adjacents. Un escalier incliné (50) et une plateforme de palier horizontale (55) sont formés à l'intérieur de chaque section de tour et reliés de façon rigide aux murs. Des éléments d'ancrage (105, 110) sont enterrés dans le socle de base pour s'ériger dans les parties supérieures et inférieures des parois de chaque section de tour.
PCT/US2008/007051 2008-04-03 2008-06-05 Tour de cage d’escalier modulaire en béton préfabriqué Ceased WO2009123600A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/080,509 US20090249714A1 (en) 2008-04-03 2008-04-03 Precast concrete modular stairwell tower
US12/080,509 2008-04-03

Publications (1)

Publication Number Publication Date
WO2009123600A1 true WO2009123600A1 (fr) 2009-10-08

Family

ID=41131961

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/007051 Ceased WO2009123600A1 (fr) 2008-04-03 2008-06-05 Tour de cage d’escalier modulaire en béton préfabriqué

Country Status (2)

Country Link
US (1) US20090249714A1 (fr)
WO (1) WO2009123600A1 (fr)

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KR102429154B1 (ko) * 2020-09-18 2022-08-05 (주)케이씨산업 코어 벽체 접합 앵글이 구성된 분리형 pc모듈러 구조물 및 분리형 pc모듈러 구조물과 건축물 코어부의 벽체의 접합구조
KR102429153B1 (ko) * 2020-09-18 2022-08-05 (주)케이씨산업 Pc모듈러 구조물간 접합구조를 갖는 분리형 pc모듈러 구조물 및 이를 이용한 pc모듈러 구조물 간의 수직 접합구조, pc모듈러 구조물 간의 수평 접합구조
KR102429975B1 (ko) * 2020-10-19 2022-08-08 이홍재 박스형 pc모듈러 구조물
AU2021107156A4 (en) * 2020-11-10 2021-12-02 Iavilaer Pty Ltd Construction of a lift shaft or stair core
CN113089949B (zh) * 2021-04-12 2022-09-09 陕西省建筑设计研究院(集团)有限公司 一种混凝土主体结构装配式滑动钢楼梯的施工方法
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CN115928963B (zh) * 2022-12-01 2025-07-04 中国建筑西北设计研究院有限公司 一种隐蔽式出楼顶的楼梯间
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KR102731133B1 (ko) * 2023-08-24 2024-11-18 주식회사 이지코어 프리캐스트 콘크리트 계단실 시공 방법

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