Direct Sales of D-Type Expansion Joints 40/80/160 Models for Bridge Pavement Expansion Joints

1. Product Overview

Bridge steel expansion joints are key components used in bridge structures, primarily addressing displacement issues caused by thermal expansion and contraction, load deformation, concrete shrinkage, and other factors, ensuring the safety and durability of bridges under various environmental conditions. Steel expansion joints are made of high-strength steel, offering excellent load-bearing capacity, fatigue resistance, and durability.

2. Main Types

Based on structural form and usage requirements, bridge steel expansion joints are mainly divided into the following types:

• Single Joint Steel Expansion Joint: Suitable for bridges with small displacement (typically ≤80mm), featuring a simple structure and easy installation.
• Multi-Joint Steel Expansion Joint: Suitable for medium displacement (80mm~400mm), composed of multiple sets of spliced steel sections to accommodate larger expansion and contraction needs.
• Modular Steel Expansion Joint: Suitable for large displacement (≥400mm), designed with a modular approach for combined use, ideal for large bridges.

3. Core Features

• High-Strength Load-Bearing: Made of high-quality alloy steel or materials like Q345, capable of withstanding dynamic vehicle loads and impacts.
• Excellent Durability: Surface treated with anti-corrosion methods (such as hot-dip galvanizing or epoxy resin coating), resistant to corrosion and wear, with a long service life.
• Strong Adaptability: Capable of accommodating longitudinal, transverse, and vertical displacement changes in bridges.
• Water and Dust Resistance: Some models are equipped with rubber waterstop belts or sealing strips to prevent rainwater and debris from entering the bridge structure.
• Low Noise: Optimized design of steel sections and rubber pads reduces noise and vibration during vehicle passage.