A bridge expansion joint is precisely engineered to accommodate movement between bridge spans caused by thermal changes, traffic loads, and seismic activity. This bridge joint system is vital for maintaining structural integrity, providing a smooth riding surface, and protecting the bridge from damage.
Our road expansion joint solutions are specified for a wide range of critical applications. These include highway overpasses, long-span viaducts, bridge approaches, and urban flyovers. We provide reliable modular expansion joint systems for projects requiring superior performance under continuous, heavy traffic flow.
| Joint Type | Key Characteristics & Applications |
| Modular Expansion Joint | For large movements (>80mm). Multiple seal bands supported by parallel center beams. Offers the highest load capacity and durability for major bridges. |
| Finger Plate Joint | For medium movements. Features interlocking steel plates. Excellent load-bearing but requires dedicated drainage systems. |
| Asphaltic Plug Joint | For small movements (<50mm). A flexible asphalt-polymer blend. A cost-effective solution for secondary roads with low traffic volume. |
| Strip Seal Expansion Joint | For small to medium movements. A pre-formed rubber gland anchored into steel edge rails. Provides good waterproofing and is easy to install. |
| Parameter | Common Specifications & Options | Description / Significance |
| Type | Modular, Finger Plate, Strip Seal, Asphaltic Plug | Defines the joint’s design and application scope based on movement capacity and structural needs. |
| Movement Range | ±50mm, ±100mm, ±200mm, ±400mm, ±600mm, ±1000mm+ | The core specification indicating the total longitudinal, transverse, and vertical displacement the joint can accommodate. |
| Material
|
Grade 345 (Q345B) / S355JR Steel (Main Structure) | Ensures strength and long-term durability. |
| Neoprene / EPDM Rubber (Sealing Band) | Guarantees waterproof sealing and elasticity. | |
| Stainless Steel (Sliding Components / Finger Plates) | Used for critical wear-resistant parts. | |
| Design Standards
|
AASHTO LRFD (USA) | |
| EN 1990 / EN 1993 (Europe) | ||
| JTG D60 (China) | ||
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