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CE
ISO 9001
SGS
10-Year Structural Warranty
Segmental Straddle Carrier
Specialized for short-line match casting yards and on-deck segmental assembly. Features highly precise winches for millimeter-level positioning of concrete segments.
50t - 250t
Capacity
Millimeter-level lifting
Precision
Compact & Rigid frame
Design
Segmental bridges
Application
Fast global delivery · 24/7 engineering support · CE & ISO certified
What is a Segmental Straddle Carrier?
A segmental straddle carrier is heavy-duty mobile lifting equipment engineered to handle precast concrete bridge segments. Utilizing a high-clearance gantry and multi-axle steering, it straddles, lifts, and securely transports massive segments within precast yards or directly along bridge decks to feed erection machines.
Equipment Overview
The segmental straddle carrier is specialized heavy-lifting equipment engineered for the handling, transportation, and precise positioning of precast concrete bridge segments. Unlike standard industrial straddle carriers, this equipment is specifically optimized for viaduct infrastructure projects, seamlessly integrating into both precast yard logistics and active bridge deck erection sequences.
Utilizing a robust gantry architecture and advanced multi-axle steering, it straddles oversized concrete segments to provide exceptional load stability during transit. Equipped with synchronized hydraulic hoisting mechanisms, it allows for millimeter-level precision when stacking segments or feeding them directly to a launching gantry. For international bridge contractors, this carrier dramatically reduces cycle times, minimizes ground pressure, and ensures the safe, continuous flow of precast components in complex span-by-span or balanced cantilever construction projects.
Technical Specifications
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Load Capacity: 50t – 250t (Custom engineered to segment weight)
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Inside Clear Width: Customized to match segment geometry
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Lifting Height: Up to 12m (Depending on yard stacking requirements)
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Hoisting Speed (Loaded): 0 – 2 m/min (Micro-speed enabled)
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Travel Speed (Loaded): 0 – 5 km/h
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Steering Modes: Straight, transverse, diagonal, and 360-degree pivot
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Power Supply: Diesel-Hydraulic Power Pack / Diesel-Electric Generator
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Suspension System: Hydraulic compensation cylinders for load equalization
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Operating Temperature: -20°C to +50°C
Application Scenarios
Precast Segment Storage Yards
Lifting newly cured concrete segments from the casting cells, transporting them across the yard, and stacking them securely to optimize storage space.
Bridge Deck Feeding Operations
Traveling along the completed sections of a bridge deck to deliver precast segments directly to the rear feeding station of the segmental launching gantry.
Span-by-Span Viaduct Erection
Working in tandem with bridge erection machines to ensure a continuous, synchronized supply of structural segments for rapid viaduct assembly.
Why Engineers Choose This Equipment
Feature
Engineering Benefit
Precision Hydraulic Hoisting
Features synchronized hydraulic winches that provide micro-speed lifting and lowering, essential for the delicate handling and precise alignment of concrete segments.
Multi-Axle Steering Flexibility
Independent wheel steering supports longitudinal, transverse, and carousel pivot movements, ensuring exceptional maneuverability in congested precast yards.
High-Clearance Straddle Design
The optimized gantry portal offers substantial inner clearance, allowing the equipment to safely straddle, lift, and stack multi-layered bridge segments.
Advanced Load Synchronization
Integrated PLC controls automatically monitor and adjust the hoisting points, preventing eccentric loading and dangerous load sway during transit.
Robust Gantry Architecture
Fabricated from high-yield structural steel, the rigid frame is engineered to withstand severe torsional forces when operating on uneven ground or bridge deck gradients.
Comprehensive Safety Interlocks
Equipped with overload limiters, hydraulic lock valves, anti-collision sensors, and emergency braking systems to secure massive payloads under all operating conditions.
Frequently Asked Questions
What is a segmental straddle carrier?
It is a specialized rubber-tyred gantry crane designed to straddle, lift, and transport heavy precast concrete segments within casting yards and active bridge construction sites.
How does it differ from a standard straddle carrier?
It is specifically engineered for bridge construction, featuring highly precise synchronized hydraulic hoisting to handle the delicate geometric tolerances of precast concrete segments without causing micro-fractures.
What is the typical load capacity?
Standard capacities range from 50 tons to 250 tons, custom-matched to the maximum weight of the specific project's precast box girders or bridge segments.
Can it operate directly on the bridge deck?
Yes. With its multi-axle hydraulic suspension distributing the ground pressure evenly, it is frequently used to transport segments over completed bridge spans to feed the launching gantry.
What safety features are included for hoisting segments?
It includes hydraulic fail-safe brakes, load moment indicators, anti-sway technology, and emergency lowering systems to prevent dropping the segment in the event of a power failure.
What is the typical lead time for delivery?
Standard lead time is 30-45 days depending on configuration and current production schedule. We provide a firm delivery date with every quotation.
Do you provide installation and commissioning support?
Yes. Our engineering team can travel to your project site to supervise installation, provide training for your crew, and commission the equipment. Remote video support is also available.
What warranty do you offer?
All our structural equipment comes with a 10-year structural warranty and 2-year comprehensive warranty covering manufacturing defects. Extended warranty options are available.
What shipping methods are available?
We ship worldwide via container (FCL/LCL), flat rack for oversized components, or RO-RO for self-propelled equipment. FOB, CIF, and DAP terms are available.
Do you offer custom engineering solutions?
Absolutely. Our engineering team works with your project specifications to customize span length, lifting capacity, and control systems to meet your exact bridge construction requirements.
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