Modular tunnel DokaCC

Overview
Cut & Cover – DokaCC is a modular forming wagon (traveller) for cut-and-cover tunnel projects. It forms rectangular and circular tunnel sections while permitting large drive-through openings for site traffic. The system is compatible with all common foundation types, including strip foundations and load-transfer arrangements.

Applicable construction methods / use cases

• Stations and tunnel lines
• Mining method / cavern construction
• Cut-and-cover (open) construction

Economical

• Reduced assembly effort due to a statically optimised load-bearing system requiring fewer shoring frames
• Lower labour input thanks to a small number of operating points

Safe

• Optimised V‑strut angles to minimise risk of overturning or slippage at wall foundations
• Safe up/down access via integrated caged ladderway
• Large drive-through openings to maintain site traffic flow
• Clear documentation from assembly drawings to risk assessments
• CE marking standard in Europe

Fast

• Hydraulic lifting appliance for easy lifting, lowering and precision adjustment (manual operation optional)
• Optimised travelling structure for repositioning without structural adaptation
• Optional short set-up times with pre-assembled formwork and shoring components

Formwork and expertise from a single source
Doka provides integrated support for complex tunnel projects — from planning and project management to tailored forming and shoring solutions.

Innovative system design

• Usable on foundations of all common types; load transfer and adaptation to different cross-sections enabled

Practical stop-end formwork

• Large platforms allow sufficient stripping paths and access for joint sealing works

Safe to use

• Design prevents derailment of the forming wagon even during lateral shifting

Quick and easy repositioning

• Hydraulic lifting appliance simplifies lifting, lowering and fine adjustment for efficient repositioning

Project highlights / examples

• Wide drive-through openings ensure site traffic in all construction phases
• Sustainable reuse: forming wagon redeployed on other projects after minor adaptations
• Handles significant longitudinal gradients; conversion from circular to rectangular section feasible
• Operable in both traffic directions; usable while traffic passes in opposite direction; movable stop-end units for lane edges

Technical specifications

• Product type: cut-and-cover forming wagon / traveller (DokaCC)
• Forms: rectangular and circular tunnel sections
• Usage: cut-and-cover, mining-method applications, stations and lines
• Foundation compatibility: suitable for all common foundation types including strip foundations and load-transfer designs
• Load-bearing concept: statically optimised shoring frames (reduced number required)
• Safety features: optimised V‑strut angles, integrated caged ladderway
• Operation: hydraulic lifting appliance (optional manual operation)
• Travel: optimised travelling structure on rails; derailment-resistant during lateral shifting
• Stop-end formwork: large platforms for stripping paths; movable stop-end units for lane edges
• Documentation: assembly drawings and risk assessments provided
• Certification: CE marking standard in Europe