Customizing a tunnel lining trolley (also known as a formwork traveller or gantry) is a complex engineering process, essential for ensuring the trolley perfectly matches the specific requirements of a particular tunneling project. Standard, off-the-shelf trolleys rarely fit unique tunnel geometries, geological conditions, or construction methodologies.
Customized Tunnel Lining Trolley
1. Understanding the Need for Customization (The “Why”)
Customization is driven by specific project parameters:
Tunnel Geometry:
Shape: Circular, horseshoe, oval, rectangular, custom profiles.
Size: Specific diameter or width/height dimensions.
Gradient: Inclines or declines in the tunnel.
Curves: Horizontal or vertical curves requiring articulated or adaptable trolleys.
Lining Design:
Segment Length: The length of concrete poured in each cycle dictates the trolley length.
Concrete Thickness: Affects the weight the formwork must support.
Reinforcement: Complexity of rebar cages can influence formwork design and access.
Blockouts & Inserts: Need for openings (e.g., for cross-passages, ventilation, services) requires specific formwork modifications.
Geological Conditions:
Ground pressure might necessitate stronger structural designs or specific anchoring systems.
Concrete Specifications:
Pouring Method: Pumped concrete requires integration points for pipelines (slick lines).
Vibration Needs: Type, number, and placement of vibrators (internal/external) must be specified.
Curing Requirements: Potential need for integrated heating or insulation.
Construction Method & Schedule:
Cycle Time: Requirements for rapid stripping, moving, and setting influence hydraulic speed, automation levels, and overall design efficiency.
Single vs. Double Shell: Different approaches impact trolley design.
Integration: Needs to work seamlessly with other equipment (TBM, waterproofing applicators, rebar jigs).
Logistics & Site Constraints:
Transport Limitations: Size and weight restrictions for getting the trolley to and inside the tunnel. Often requires modular design for easier transport and assembly.
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For more detailed information on how to customize the tunnel lining trolley, please click here: https://www.gf-bridge-tunnel.com/a/blog/customized-tunnel-lining-trolley.html
