1. Trang chủ
  2. » Giáo án - Bài giảng

Cầu bê tông cốt thép 2 công nghệ đúc hẫng English

33 642 0

Đang tải... (xem toàn văn)

Tài liệu hạn chế xem trước, để xem đầy đủ mời bạn chọn Tải xuống

THÔNG TIN TÀI LIỆU

Thông tin cơ bản

Định dạng
Số trang 33
Dung lượng 8,53 MB

Nội dung

1 LG - Launching Gantries Span length: 25 – 100+m Usual Length: Minimum 500 - 800 segments Usual cycle time / span 1-3 days / span LAUNCHING GANTRY Main Products Applications 2 FORMTRAVELLER Main Products Applications FT - Formtraveller Span length: 40 – 300+ m Usual cycle time: 2 x 1 segment / week 3 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 post- 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. THE FORMTRAVELLER CONCEPT 4 The Formtraveller 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. 5 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- elevations). Small deflections: The vertical deflection at the front of the Formtraveller is less than 25 mm at maximum load. Formwork beams are designed for a maximum deflection of L/400 of their length. Easy assembly: One Formtraveller may be assembled in one week. Rolling forward on rails, the reset time is short. THE FORMTRAVELLER FEATURES 6 The Formtraveller: Components 7 MAIN RAILS HYDRAULIC CYLINDERS The Formtraveller - Components PULL DOWN CYLINDERS LAUNCHING CYLINDERS MAIN CYLINDERS 8 FRONT & REAR BOOGIES MAIN RAILS HYDRAULIC CYLINDERS The Formtraveller - Components 9 FRONT & REAR BOOGIES MAIN RAILS HYDRAULIC CYLINDERS MAIN FRAMEWORK The Formtraveller - Components 10 FRONT & REAR BOOGIES MAIN RAILS HYDRAULIC CYLINDERS MAIN FRAMEWORK FRONT & REAR FRAMEWORK BOTTOM FRAMEWORK CROSS ARMS INTERNAL FRAMEWORK The Formtraveller - Components [...]... 16 The Formtraveller: Alqueva, Portugal 17 The Formtraveller: Dyrøy bridge, Norway 18 The Formtraveller: Algés, Portugal 19 The Formtraveller: Loures, Portugal 20 The Formtraveller: Arrade, Portugal 21 The Formtraveller: Rio Minho, Portugal 22 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... 3m 23 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 Phase 2: Concreting of 1st segment on each side of the pier finished 24 ... 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 Phase 4: 12, 2 m concreted (standard formtraveller); ready for normal procedure 27 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 Phase 4: 12, 2 m concreted (standard formtraveller); ready for normal procedure 28 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 Phase 4: 12, 2 m concreted (standard formtraveller); ready for normal procedure 29 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... possible to start free cantilevering from pier heads as small as 3 m The procedure is illustrated through the these 4 phases Phase 4: 12, 2 m concreted (standard formtraveller); ready for normal procedure 31 The Formtraveller - Cross-Support for installation on small Pierheads 32 MOVABLE SCAFFOLDING SYSTEM MSS - Moving Scaffolding System Span length Usual Total Length 500m – several km’s Usual cycle time... 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 Phase 4: 12, 2 m concreted (standard formtraveller); ready for normal procedure 30 The Formtraveller - Cross-Support for installation on small Pierheads When the pier head is too small to allow normal assembly of... Splitting of travellers 25 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 Phase 3: Splitting of travellers 26 The Formtraveller... EXTERNAL FORMWORK MAIN RAILS BOTTOM FORMWORK The Formtraveller - Components INTERNAL FRAMEWORK BOTTOM FRAMEWORK CROSS ARMS FRONT & REAR FRAMEWORK MAIN FRAMEWORK FRONT & REAR BOOGIES HYDRAULIC CYLINDERS 12 INTERNAL FORMWORK EXTERNAL FORMWORK MAIN RAILS BOTTOM FORMWORK END FORMWORK WORKING PLATFORMS The Formtraveller 13 The Formtraveller A normal working cycle may be as follows:  The Formtraveller, except . segments Usual cycle time / span 1-3 days / span LAUNCHING GANTRY Main Products Applications 2 FORMTRAVELLER Main Products Applications FT - Formtraveller Span length: 40 – 300+ m Usual cycle. 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

Ngày đăng: 16/06/2014, 23:28

TỪ KHÓA LIÊN QUAN

w