Bridge expansion and contraction device(nexco) - List of Manufacturers, Suppliers, Companies and Products

Examples of Installation of Expansion Devices | Keiji Bypass / Keihan Overpass [Crittec Industries]

Continuous adoption on Meishin Expressway and Keiji Bypass. A large expansion joint with a proven durability of 100 years【Hybrid Joint Type 3LII】.

We would like to introduce a case study of the hybrid joint (3LII type) for bridge expansion devices, which excels in water resistance and durability. 【Case Study 1】 - Location: Kyoto Prefecture (Keiji Bypass, Keihan Overpass) - Client: Kyoto Expressway Office - Project Name: FY 2023 Replacement Work for Expansion Devices within the Jurisdiction of Kyoto Expressway Office - Construction Period: September 2024 - Product: Hybrid Joint 3LII-350 【Case Study 2】 - Location: Kyoto Prefecture (Keiji Bypass, Keihan Overpass) - Client: Kyoto Expressway Office - Project Name: FY 2023 Replacement Work for Expansion Devices within the Jurisdiction of Kyoto Expressway Office - Construction Period: November 2025 - Products: Hybrid Joint 3LII-150, 3LII-160 - Comment: The high evaluation of the construction results in 2024 led to continued adoption for the following year's project. The replacement with product joints has achieved water resistance, durability, and low noise. The standard specifications of non-drainage structure and secondary water stop materials have significantly reduced the risk of leakage under the girders. For more details, please contact us or request a catalog.

Company：クリテック工業本社、大阪営業所
Price：Other

Bridge Construction
Road construction
Bridge expansion and contraction device

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Bridge expansion device "N-FC Finger Joint"

A structure designed with consideration for workability during regular inspections from below the bridge and when replacing water-stopping materials after it has been put into service!

The "N-FC Finger Joint" is a bridge expansion device that protects the water-stopping material, which is essential for non-drainage functionality, and prevents early deterioration of bridge girder ends in snowy and cold regions. By adding a fin cover to the underside of the face plate and narrowing the gaps of the comb teeth, the proportion of soil, snow, and ice that enters the gaps and reaches the water-stopping material can be reduced to below 15% even at the lowest temperatures (-20°C), thereby preventing the deterioration of the water-stopping material. Additionally, by using water-stopping materials that have passed tests based on NEXCO's construction management guidelines for structures, water-stopping performance is ensured. 【Features】 ■ Added fin cover to the underside of the face plate to narrow the gaps of the comb teeth ■ Resists constant wheel loads with only the face plate ■ Confirmed fatigue durability of over 50 years through fatigue tests using full-scale specimens ■ Utilizes water-stopping materials that have passed tests based on NEXCO's construction management guidelines for structures ■ Dry water-stopping materials, support brackets, and water-stopping rubber are designed to be detachable from below the girder *For more details, please refer to the PDF document or feel free to contact us.

Company：日本ファブテック
Price：Other

Bridge Materials
Bridge Construction
Bridge expansion and contraction device

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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 - The eight 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 create expansion gaps to prevent the bridge girders from colliding with the bridge abutments or with each other due to thermal expansion and contraction. 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 for it to only fulfill that function. Consideration must be given to the safe passage of vehicles and economic aspects, and specifically, the following functions are highlighted: [Functions Generally Required of Expansion Devices] - No noise during travel - No impact during travel - Long-term usability - No leakage under the girder - Easy installation - Simple and cost-effective 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 installation - Replaceable - Economical

Company：クリテック工業本社、大阪営業所
Price：Other

Foundation construction
Bridge expansion and contraction device

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"Buried expansion device construction" and "coating system slab waterproofing work" in accordance with performance verification testing.

The NEXCO testing method complies with the testing guidelines for waterproofing of road bridge decks and meets the requirements for elasticity, water resistance, and durability suitable for small-scale bridges.

【Features】 ■ More than 15% reduction in construction costs compared to conventional methods ■ Can be easily constructed at room temperature, allowing for shortened construction periods ■ Passed performance verification tests for 15 years ※ This method is considered in conjunction with "expansion device installation work" and "deck waterproofing work." ※ For more details, please contact us or download the PDF to view.

Company：リノブリッジ東京本社
Price：Other

Coating film waterproofing material/permeable waterproofing material
Civil Engineering Company
Civil Engineering CAD
Bridge expansion and contraction device

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Expandable device Hybrid joint Durability 100 years 3LII type

A newly constructed bridge requires no replacement for 100 years! Long-term water resistance, maintenance-free.

In the longevity of bridges, the durability of expansion joints is a very important factor. Replacing expansion joints requires significant costs and traffic regulations, which can reduce the operational efficiency of bridges. The Hybrid Joint Type 3LII achieves a durability of 100 years, contributing to cost reduction and improved safety from a long-term perspective. 【Application Scenarios】 - New bridges - Repairs of existing bridges - Highways * For general roads, there is the "Hybrid Joint Type 3LIIA." 【Benefits of Implementation】 - Reduction in lifecycle costs due to no need for replacement for 100 years - Maintenance-free, eliminating the need for sound inspections and ultrasonic inspections, reducing maintenance costs - Decreased frequency of traffic regulations, mitigating traffic congestion and noise damage, and enhancing safety - Adoption of new technology through NETIS registration (No. KT-210067-A)