EP2764162A1 - Self-launching movable scaffolding system - Google Patents

Self-launching movable scaffolding system

Info

Publication number
EP2764162A1
EP2764162A1 EP11778722.6A EP11778722A EP2764162A1 EP 2764162 A1 EP2764162 A1 EP 2764162A1 EP 11778722 A EP11778722 A EP 11778722A EP 2764162 A1 EP2764162 A1 EP 2764162A1
Authority
EP
European Patent Office
Prior art keywords
launching
support
self
scaffolding system
movable scaffolding
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.)
Withdrawn
Application number
EP11778722.6A
Other languages
German (de)
English (en)
French (fr)
Inventor
Martin PEDRO BAE
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.)
NRS CONSULTING CO., LTD.
Original Assignee
NRS Consulting Co Ltd
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 NRS Consulting Co Ltd filed Critical NRS Consulting Co Ltd
Publication of EP2764162A1 publication Critical patent/EP2764162A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced

Definitions

  • the Movable Scaffolding System (MSS) for bridge construction may offer advantages over conventional construction (Conventional Scaffolding), including creating minimal disturbance to surroundings, providing a more concentrated work area for superstructure assembly, and possibly increased worker safety given the improved erection environment.
  • MSS Movable Scaffolding System
  • Movable Scaffolding Systems are conceived to be used in the construction of cast in- situ concrete bridges and they are travelling steel structures supporting the formwork that gives shape to the bridge.
  • the MSS is built to be backed off from the hardened concrete, moved to a new position, and precisely adjusted for concreting the next span.
  • MSS System The Movable Scaffolding System was developed in the mid 1970's. The system has since been further developed and has become a very popular system for constructing bridges worldwide. The ability to adapt the MSS to different cross sections allows the contractor to use the equipment for different projects elsewhere. MSS System
  • the MSS consists of a support structure spanning between two piers from which formwork is either supported or suspended.
  • the inner formwork (core form) is collapsible and can run on a rail system to allow easy relocation to the next span.
  • the system is designed so that the outer formwork can be opened sufficiently to allow it to pass around the bridge columns during the launching process. After launching the formwork is closed again and after setting to the correct alignment, placement of reinforcement can start.
  • the MSS can be divided into two types, namely, (i) underlane (or underslung) and (ii) overlane (or overhead).
  • the underlane type of MSS has two parallel girders, which supports the formwork.
  • the overlane type of MSS has one or two main girders from which the formwork is suspended.
  • type of bridge deck e.g. single cell, twin cell, double T
  • height of columns e.g. single cell, twin cell, double T
  • NRS is the first in the world to develop the Self-launching MSS (SL-MSS) in order to solve the problems related to the difficulties in handling pier support brackets over water as well as on high piers.
  • This system is able to transfer forward and mount the pier support brackets without any need of an independent crane.
  • the SL-MSS has been successfully used in the construction of several major bridge projects worldwide and is widely sought after due to its cost and operational efficiency.
  • the existing problems related to current MSS include requirement of long cycle time, inability to deliverable whole rebar cage simultaneously or all at once, requirement of several block-outs in the superstructure, requirement of hanging bars passing through the superstructure deck to support the formwork, requirement of other equipments necessary for relocation of the supports and, last but not least, the complexity of its operation as well as the labor intensive work.
  • This invention provides the new MSS with the self-launching system used for cast-in- situ bridges which can offer many cost-saving advantages to the bridge construction project.
  • Figures 1-A and 1-B show General Arrangement: Elevation and Plan
  • Figures 2-A and 2-B show Section A at Hanger Truss: Rebar cage installation &
  • Figures 3-A and 3-B show Section A at Hanger Truss: Launching position at typical pier & portal pier Figures 4-A, 4-B and 4-C Section B at Rear Support: Rebar cage installation, concreting and launching positions
  • FIGS 5-A and 5-B show Section C at Front support: Rebar cage installation and concreting positions
  • Figures 6-A and 6-B show Section C at Front support: Launching position at typical pier & portal pier
  • Figures 7-A and 7-B show Section D at Middle launching support: Launching and relocating positions
  • Figures 8-A and 8-B show Section E at Front launching support: Launching and relocating positions
  • Figures 9-A and 9-B show Launching sequence: Stage 1 and 2
  • Figures 10- A and 10-B show Launching sequence: Stage 3 and 4
  • the self-launching movable scaffolding system (SL-MSS) according to this invention comprises of
  • Rear Nose 120
  • Figure 1-A which provides a transfer of load to Rear support (400) during casting and launching is equipped with the mono-rail (701) for electrical lifting hoist (702) used for rebar cage (900) loading.
  • Rear Support (400) which provides support to the MSS during rebar cage (900) installation, casting, and launching.
  • the said rear support (400) can be opened in the center for rebar cage (900) to pass through as shown in Figure 4-A and unlike the other previous systems that require the additional rear support for casting, the said Rear support (400) of this invention is now designed to take the casting load.
  • the foldable legs (401), parts of the Rear support (400), are folded up to support directly to the main girder (100) during casting and launching.
  • Rear support (400) is set for casting stage.
  • the rear support main jacks (402) are activated and transferred load to existing bridge.
  • the rear support main jacks (402) are deactivated and load is transferred pass through the express rollers (403) to the existing bridge.
  • the said Rear Support (400) is fixed to the main girder (100). No other external equipment is required for its relocation.
  • Front Support (410) which provides support to the MSS during rebar cage (900) installation and casting. As shown in Figure 5- A, The said Front support (410) is opened at the center for rebar cage (900) to pass through. Once finish placing the rebar cage (900), tension bars (415) are installed and engaged to the front support
  • the front support main jacks (413) are activated and transferred load from main girder (100) to the front support (410).
  • the Front support legs (412) which are parts of the front support (410) provide a transfer of load further to column footing.
  • the lower parts of the front support (410) as shown in Figure 6-B can be disconnected when launching pass the portal area (416).
  • the said front support (410) is fixed to the main girder (100). No other external equipment is required for its relocation.
  • Front Launching Support (420) provides support to the MSS during launching operation.
  • the said front launching support (420) is set and secured on the pier top (425) as shown in Figure 8-A with the launching wagon (500) at top which allows the front nose (1 0) and the main girder (100) to glide or move over to the new set position.
  • the said front launching support (420) can be dissembled from pier and suspended to front nose (110) as shown in Figure 8-B in order to relocate to the next pier.
  • Middle Launching Support (430) provides support to the MSS during launching operation.
  • the said middle launching support (430) is suspended to the front nose (110) as shown in Figure 1-A during casting.
  • the said middle launching support (430) is moved back and set on already cast concrete, as shown in the dotted line in Figure 1 -A , and activated to support the MSS during launching.
  • the cross section Figure 7- A and 7-B show the middle launching support (430) in active and inactive stages respectively.
  • the said trolley system provides relocation to the said Middle lunching support (430) and the said Front launching support (420) and also provides the rebar cage (900) delivery.
  • the said trolley system is composed of the mono-rail (701) set along the rear nose (120), main girder (100), and front nose (1 10) and the electrical lifting hoist (702).
  • the launching sequence of the said SL-MSS comprises of the concreting and launching stages as the following:
  • Middle launching support (430) is suspended to the front nose (110).
  • Front launching support (420) is ready set on top of the next pier.
  • MSS is supported by middle launching support (430) and rear support (400).
  • MSS is supported by temporary tower (501) at the rear and the middle launching support (430) at the front.
  • Pre-stress cost reduction (up to 30%) by reduction of deck pre-stressing amount (no cantilever moments) or reduction in number of anchorages & couplers in the pre- stressing of the deck and reduction in amount of pre-stressing operations in the deck Reduction in number of high risk operations (movements & launching)
  • Prefabricated rebar cage can be lifted and placed by MSS

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
EP11778722.6A 2011-10-07 2011-10-07 Self-launching movable scaffolding system Withdrawn EP2764162A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TH2011/000046 WO2013052017A1 (en) 2011-10-07 2011-10-07 Self-launching movable scaffolding system

Publications (1)

Publication Number Publication Date
EP2764162A1 true EP2764162A1 (en) 2014-08-13

Family

ID=44906351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11778722.6A Withdrawn EP2764162A1 (en) 2011-10-07 2011-10-07 Self-launching movable scaffolding system

Country Status (5)

Country Link
US (1) US20150021119A1 (zh)
EP (1) EP2764162A1 (zh)
KR (1) KR20140084107A (zh)
CN (1) CN103998690A (zh)
WO (1) WO2013052017A1 (zh)

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WO2014200443A1 (en) * 2013-06-11 2014-12-18 Nrs Consulting Co., Ltd. Self-launching movable scaffolding system
WO2015034444A1 (en) * 2013-09-06 2015-03-12 Nrs Consulting Co., Ltd. New overhead self-launching launching gantry systems
EP3420056B1 (en) * 2016-02-24 2022-08-31 The Lubrizol Corporation Lubricant compositions for direct injection engines
CN105735143B (zh) * 2016-04-29 2017-12-05 郭河平 桥梁桥面施工装置
CN105887690B (zh) * 2016-05-05 2017-09-01 中建五局土木工程有限公司 一种上行式移动模架原位拆除施工方法
PT109441A (pt) 2016-06-08 2017-12-11 Pgpi - Marcas E Patentes S A Cimbre ou lançador superior em caixão com secção inferior vazada
CN106149566A (zh) * 2016-08-17 2016-11-23 王文龙 轨索牵引支承启闭系统
CN106149639B (zh) * 2016-08-30 2018-02-27 郑州新大方重工科技有限公司 一种单矩形顶口封闭型水利渡槽施工的移动模架
CN107100086B (zh) * 2017-06-20 2023-05-30 山东交通学院 一种移动模架在超宽墩的过孔方法及过孔装置
CN107829374B (zh) * 2017-12-13 2023-06-09 中国铁建大桥工程局集团有限公司 公路预应力砼箱梁移动模架及悬挑施工方法
CN108442255B (zh) * 2018-05-23 2024-04-19 郑州新大方重工科技有限公司 一种移动模架造桥机及现浇造桥的施工方法
CN109972655B (zh) * 2018-06-30 2024-08-02 中铁二十二局集团第三工程有限公司 一种预制管廊机械与液压组合型整体安拆钢模板及安装方法
CN110485264B (zh) * 2019-08-21 2020-06-02 保利长大工程有限公司 一种中央墩大悬臂盖梁的施工方法
CN111395344A (zh) * 2020-03-25 2020-07-10 中国一冶集团有限公司 一种可重复使用咬合桩定位装置及施工方法
CN114481862A (zh) * 2022-01-06 2022-05-13 中国五冶集团有限公司 移动式桁架装置及施工工艺
CN114645515B (zh) * 2022-03-24 2024-04-12 中国建筑土木建设有限公司 混凝土节段箱梁的浇筑设备及其浇筑方法
CN115094836B (zh) * 2022-06-23 2023-06-30 中国水利水电第八工程局有限公司 一种造槽机及造槽方法
CN117779635B (zh) * 2024-02-27 2024-05-14 中铁四局集团有限公司 钢筋笼整体吊装入模的简支梁移动模架现浇施工方法
CN118127944B (zh) * 2024-05-08 2024-07-09 山东金衢设计咨询集团有限公司 桥梁现浇混凝土防撞护栏模板台车

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Also Published As

Publication number Publication date
KR20140084107A (ko) 2014-07-04
CN103998690A (zh) 2014-08-20
WO2013052017A1 (en) 2013-04-11
US20150021119A1 (en) 2015-01-22

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