Lightweight formwork

modularframebridge

Overview
The Doka composite forming carriage is a travelling carriage designed for fast, safe construction of steel‑composite bridge decks. It carries a large, pre‑assembled deck formwork area that can be cycled without dismantling, enabling efficient weekly concreting cycles and movement of the entire unit in one piece.

Key benefits

• Reduced capital expenditure through use of rentable standard components
• Smooth construction workflow with easy handling and rapid formwork closing/opening
• Customisable solutions to fit differing bridge geometries

System (simple system grid)
The longitudinal grid is set by a 5.00 m long × 2.00 m high longitudinal girder. Transverse adjustment is achieved by two transverse frameworks joined by a compensation zone. Adjustable spindle struts and numerous bolting positions in the steel girders provide optimum adaptability. The System beam 5.00 m NG enables even more flexible positioning of the transverse framework.

Safety on the structure
Suspended finishing‑work platform levels deliver a high standard of safety. With a few additional safety components the carriage can be enclosed for complete perimeter protection; underslung variants provide barrier‑free access to the roadway where required.

Roller supports for inside formwork

• Enable forward‑jacking of the inside formwork using a roller‑drawer principle for efficient repositioning

Unlimited adjustability options

• Cantilever arm formwork adjustable in all directions via spindle struts
• Two‑part anchoring system allows simple, fast closing and opening of formwork

Formwork types & solutions

• Overslung composite forming carriage — standard type for fast, safe construction of concrete decks on steel superstructures
• Underslung composite forming carriage — provides unobstructed access to the deck, suited to wide bridge cross‑sections
• ParaTop crane‑shiftable solution — for shorter superstructures and medium spans with few repositioning cycles
• Cost‑saving custom solutions available on request for constrained spaces or special cross‑sections

Technical specifications

• Product type: Travelling composite forming carriage for steel‑composite bridges (deck concrete on steel superstructure)
• System grid longitudinal increment: 5.00 m (longitudinal girder)
• Longitudinal girder height example: 2.00 m
• System beam: System beam 5.00 m NG (enhanced transverse flexibility)
• Formwork handling: Large pre‑assembled deck formwork area cycled without dismantling
• Adjustability: Adjustable spindle struts; multiple bolting positions; compensation girders for transverse adjustment
• Load/weight characteristics: Low dead weight with high load capacity
• Working cycle: Designed for weekly concreting cycles; entire unit transported in one piece
• Safety: Suspended finishing platforms; compatible with minimal extra safety components for full enclosure
• Variants: Overslung and underslung carriages; crane‑shiftable ParaTop for short/medium spans
• Delivery/assembly approach: Low‑cost assembly from rentable standard components; tailored planning and one‑stop supply available