What is a bridge expansion device? Features of hybrid joints (Free materials available)
What is an expansion device? The roles and required functions in bridges and highways - 8 major features that hybrid joints fulfill.
A bridge expansion device is something that is installed in the gaps (expansion gaps) between the bridge abutment and the bridge girder, or between bridge girders. When designing a bridge, it is necessary to provide expansion gaps to prevent the bridge girders from colliding with the bridge abutments or with each other due to thermal expansion and contraction caused by temperature changes. To cover these gaps and ensure safe passage for vehicles and pedestrians, a bridge expansion device is required. The role of the expansion device is to fill the gaps, but it is not sufficient to only fulfill that requirement. Consideration must also be given to the safe passage of vehicles and economic aspects, with specific functions including the following: 【Functions Generally Required of Expansion Devices】 - No noise during travel - No impact during travel - Long-term usability - No leakage under the girder - Simple construction - Easy and low-cost maintenance - Low cost of the device itself Our hybrid joint has eight major features that meet the required functions: - Compatible with small bridges to long-span bridges - Usable for all types of bridges - Ultra-low noise and comfortable travel - Long-term durability and maintenance-free - High water-tightness - Safe and easy construction - Replaceable - Economical
basic information
【Eight Major Features of Our Hybrid Joints】 ○ Suitable for bridges of all sizes, from small to long-span ○ Compatible with all types of bridges ○ Ultra-low noise and comfortable driving ○ Long-term durability of 50 years* and maintenance-free ○ High water resistance ○ Safe and easy installation ○ Replaceable ○ Economical *Excluding some products ● For other functions and details, please contact us. ● We will investigate, design, manufacture, sell, and install expansion devices according to the conditions of the construction site and the specifications and performance required by the road and bridge. For more information, please contact us for inquiries, requests for materials, or estimates.
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Applications/Examples of results
【Purpose】 ○ Expansion device for bridges
Line up（14）
| Model number | overview |
|---|---|
| Hybrid Joint NS–LL Type | Load-supporting type, standard type, steel vertical tooth shape, long-term durability of 50 years, NETIS old registration |
| Hybrid Joint 3LIIA Type | Load-supporting type, heavy type, long-term durability of 50 years, NETIS registration |
| Hybrid Joint 3LII Type | NEXCO specification, Metropolitan Expressway specification, load-supporting type, heavy type, long-term durability of 50 years, NETIS registration |
| Hybrid Joint CF Type | NEXCO specification, load-supporting type |
| Hybrid Joint CS Type | Only one that passed as a steel deck specification, Metropolitan Expressway specification |
| Hybrid Joint HS Type | For vertical joints only |
| Hybrid Joint SS Type | Butt type, lightweight type |
| Hybrid Joint PS Type | For sidewalks, surface made of steel (checkered steel plate + hot-dip galvanized) |
| Hybrid Joint NPS Type | For sidewalks, surface made of rubber |
| Snow Removal Type (Guiding Plate) | Compatible with all types for each lane |
| Ground Cover Joint | |
| Intersection Joint | |
| End Rubber | |
| Secondary Water Stop Material |
