Structural Composition and Key Designs
A Single Lane Bailey steel Bridge consists of four core systems. The components are standardized, highly interchangeable, and can be assembled without welding:
Main Girder System
The core is two parallel Bailey truss sections, fixed at their spacing by support frames and transverse connecting rods to form an integral load-bearing main girder.
- Compact Type 200: Truss height 1.2m, chord members are double 10# channel steel, web members are 8# I-beams, suitable for small to medium spans;
- Type 321: Truss height 1.5m, with greater section stiffness. For heavy-load scenarios, double-layer truss sections can be stacked to increase load-bearing capacity.
Bridge Deck System
- Crossbeams: Spacing 1.5m, using No. 16 I-beams, fixed to the lower chord of the Bailey bridge panels with clamps;
- Bridge Deck Panels: Anti-slip patterned steel plates or prefabricated steel bridge deck panels, bolted together to prevent vehicle slippage;
- Wheel Guard Timber: Arranged along both sides of the bridge deck, ≥15cm high, to prevent vehicles from overturning or falling off the bridge.
Connecting System
Includes wind-resistant tie rods and longitudinal limiting devices to enhance the overall stability of the bridge and prevent lateral displacement caused by wind loads or vehicle braking. In windy areas, denser installation is required.
Auxiliary System
Includes end columns, bridge abutments, bearings, anchor bolts, etc. Bearings can be plate rubber bearings or steel bearings. Foundations are suitable for concrete abutments, masonry abutments, or temporary steel piers.
Product Categories
QSR
TSR
Product Features
- Economical and Efficient: Minimal material usage, few types and quantities of components, lowest construction and rental costs.
- Rapid Erection: Simple structure, requires few personnel and equipment, making it the fastest emergency bridge type to be put into use.
- High adaptability: Minimal requirements for bridgehead space, particularly suitable for narrow, steep mountainous terrain and river valleys.
- Flexible load-bearing capacity: By adjusting the number of truss rows (single, double, or triple rows) and whether to include reinforcing chords, it can accommodate different load requirements ranging from light vehicles to heavy trucks (e.g., Class-20 trucks).
- Traffic control: Clear single-lane alternating traffic signs are required at the bridgehead, or dedicated personnel must be assigned to direct traffic.
Application scenarios
- Emergency rescue lifeline: After earthquakes or floods, quickly establish a single-line rescue channel to the disaster area, ensuring priority access for rescue personnel, supplies, and light vehicles.
- Military tactical passage: Provide rapid detours or obstacle-crossing passages for infantry, light vehicles, and equipment.
- Temporary construction bridge: Used as a temporary bridge for construction personnel and light machinery during water conservancy, highway, and railway construction.
- Temporary rural road bridge: Used for temporary repair of washed-out rural road bridges, solving basic traffic problems.
- Special transport of heavy equipment: providing temporary dedicated single-lane lanes for the transport of large items on specific routes.
If you need more information about the single lane Bailey bridge or want to get a quote, please feel free to contact me. I will provide you with professional service!
