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The Formtraveller - Cross-Support for installation on small Pierheads When the pier head is too small to allow normal assembly of the Formtraveller, our Cross-support solves the problem

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FT - Formtraveller

Span length: 40 – 300+ mUsual cycle time: 2 x 1 segment / week

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The formtraveller system was invented in 1970 and today it is acclaimed for enhancing the cost-effectiveness of bridge projects world-wide We have continually improved the Formtraveller in collaboration with major contractors The system is lightweight, versatile and easy to assemble and operate Rolling forward on rails, the system can be reset quickly and easily

Where to use the Formtraveller

The Formtraveller is used for free cantilever construction of tensioned boxgirder and cable-stayed concrete bridges Engineered to international standards, the system provides an exceptionally rigid formwork, with a maximum deflection of less than 25 mm at full loading

post-THE FORMTRAVELLER CONCEPT

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The Standard Formtraveller is designed for a usual segment length of 5 m and load capacities (concrete and formwork) varying from 100 tons to 600 tons The steel weight depends on the cross-section of the bridge in

question, but will normally vary from about 25 tons to 110 tons

correspondingly The Standard Formtraveller may be adapted to suite almost any cross-section, and is easily adjustable during operation to

variations in segment length (up to 5 m), section height, web thickness, and deck width For segment lengths beyond 5 m and other conditions, the Formtraveller will be tailor-made

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Lightweight:

The use of rectangular hollow sections in the main structural components and recoverable high strength bars in all stays and ties reduces the total steel weight to a minimum

Flexible design:

The Formtraveller may be adapted to almost any cross-section and is easily adjustable during operation to variations in segment length, box height, web thickness, deck width and road alignment (gradient, curvature, super-

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FRONT & REAR

BOOGIES

MAIN RAILS

HYDRAULIC

CYLINDERS

MAIN FRAMEWORK

FRONT & REAR

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FRONT & REAR

BOOGIES

MAIN RAILS

HYDRAULIC

CYLINDERS

MAIN FRAMEWORK

FRONT & REAR

BOTTOM FORMWORK

INTERNAL FORMWORK

The Formtraveller - Components

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FRONT & REAR

BOOGIES

MAIN RAILS

HYDRAULIC

CYLINDERS

MAIN FRAMEWORK

FRONT & REAR

WORKING PLATFORMS

INTERNAL

FRAMEWORK

EXTERNAL FORMWORK

BOTTOM FORMWORK INTERNAL FORMWORK

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The Formtraveller

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is launched into position for a new segment

 The external formwork is levelled and fixed

 Bottom slab and webs reinforced

 The internal formwork is pulled forward

 Top slab is reinforced

 Concreting of bottom slab and webs The top slab may be cast after a short intermission to allow setting of the concrete in the webs, or it may be cast the next day

 After sufficient concrete curing, post-tensioning takes place

 Formwork is loosened, and the Formtraveller launched forward to the next segment In most cases one cycle is carried out in one week There are examples

of 4-5 days cycles

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The Formtraveller: Alqueva II,Portugal

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The Formtraveller: Alqueva, Portugal

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The Formtraveller: Algés, Portugal

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The Formtraveller: Arrade, Portugal

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The Formtraveller - Cross-Support for

installation on small Pierheads

When the pier head is too small to allow normal assembly of the Formtraveller, our Cross-support solves the problem It makes it possible to start free cantilevering from pier heads as small as 3 m The procedure is illustrated through the these 4 phases:

3 m

Phase 1:

Assembly at pierhead as small as 3 m

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Phase 2:

Concreting of 1st segment on each side of the pier finished

When the pier head is too small to allow normal assembly of the Formtraveller, our Cross-support solves the problem It makes it possible to start free cantilevering from pier heads as small as 3 m The procedure is illustrated through the these 4 phases

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Phase 3:

Splitting of travellers

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Phase 4:

12,2 m concreted (standard formtraveller); ready for normal procedure

When the pier head is too small to allow normal assembly of the Formtraveller, our patented Cross-support solves the problem It makes it possible to start free

cantilevering from pier heads as small as 3 m The procedure is illustrated through the these 4 phases

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Phase 4:

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Phase 4:

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Phase 4:

When the pier head is too small to allow normal assembly of the formtraveller, our Cross-support solves the problem It makes it possible to start free cantilevering from pier heads as small as 3 m The procedure is illustrated through the these 4 phases

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Phase 4:

When the pier head is too small to allow normal assembly of the formtraveller, our Cross-support solves the problem It makes it possible to start free cantilevering from pier heads as small as 3 m The procedure is illustrated through the these 4 phases

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MOVABLE SCAFFOLDING SYSTEM

MSS - Moving Scaffolding System

Usual Total Length 500m – several km’s Usual cycle time / span 6 – 10 days

Tiêu đề	Cầu bê tông cốt thép 2 công nghệ đúc hẫng English
Trường học	Unknown University
Chuyên ngành	Civil Engineering
Thể loại	Báo cáo
Thành phố	Unknown City

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Số trang	33
Dung lượng	8,53 MB