Steel Strip Bridge Expansion Joint Modular Bridge Expansion Joints for Roads

Product Description

Product Description

Accommodate Up to 80 mm Movement

    for movements of up to 80 mm are expansion joints made of a single set of structural steel, rubber sealing strips and dowel rods. According to the cross-sectional shape, they are divided into 5 types, including GQF-C, GQF-F, GQF-E, GQF-Z and GQF-RG. Being fully anchored within the depth of the road surfacing, can prevent roads from cracking caused by climatic change.

    In order to meet the requirements of the bridge deformation, are usually set at each end of the bridge, between ends of the beam and abutment or on the hinge joints of the bridge. They are applied with rubber noise weaken board which can help to increase movement and reduce noise from over-passing traffic by up to 80%.

Structure
    are consisted of countersunk screws, edge beam, rubber strip seal and dowel rods.

 All parts of the working together can make an excellent system.

Functions

*Expansion adaptation: Absorbs longitudinal, transverse and vertical displacements with compensation range 40-1200mm

*Waterproof sealing: Prevents rainwater and debris from penetrating girder gaps to protect substructure

*Shock absorption & noise reduction: Cushions vehicle impact and reduces noise by 10-15 decibels

*Load transmission: Uniformly distributes wheel loads to girders to avoid stress concentration

*Safety protection: Prevents vehicles and pedestrians from falling and maintains deck flatness

Features

*High load capacity: Compressive strength ≥30MPa to meet heavy traffic demands

*Good displacement adaptability: Shear modulus 1.0-1.2MPa with fast recovery after deformation

*Excellent durability: Ozone and UV resistant with 30-year design life

*Reliable waterproofing: No leakage under 0.2MPa water pressure for 24 hours

*Easy installation and maintenance: Modular design with standardized anchorage system

Specification

    *Rubber material: chloroprene rubber (CR) or natural rubber (NR).
    *Head Type: Straight or bending.
    *Cross-sectional shape: GQF-C, GQF-F, GQF-E, GQF-Z and GQF-RG.

Item	Displacement (mm)			Expansion resistance (kN/m)
	Horizontal displacement	Vertical displacement	Horizontal shear displacement	Compression	Longitudinal shearing
GQF-C30	30	± 12	± 20	≤ 4	≤ 6
GQF-C50	50
GQF-C60	60
GQF-C80	80
GQF-F30	30	± 12	± 20	≤ 4	≤ 6
GQF-F50	50
GQF-F60	60
GQF-F80	80
GQF-E80	80	± 12	± 20	≤ 4	≤ 6
GQF-Z80	80	± 12	± 20	≤ 4	≤ 6

Installation

Product Details

Application

    * are suitable for kinds of bridges which are curved, slope, skew and wide. They can also perform well on both new-built bridges and bridges have been built, both asphalt and concrete bridge surface. It also can be used in the highway.
    *Having a limited depth of the structure and being able to be installed quickly, are extremely well-positioned to replace the damaged one in a restoration project.

Packaging & Shipping

Company Profile

    Hengshui Jingtong Rubber Co., Ltd., located in Hebei Province's Hengshui City, is a professional manufacturer of engineering rubber products. Our product range includes bridge bearings, expansion joints, water stop strips, water stop belts, inflatable cores, building deformation joint device and water plugs, which are widely used in bridge, tunnel, water conservancy, and power engineering projects. The company boasts advanced technology and mature processes to ensure reliable product quality.

    We have a professional technical team and a comprehensive after-sales service system to ensure customers receive high-cost-performance products and attentive service. Hengshui Jingtong Rubber Co., Ltd. is committed to continuous innovation to meet market demands and looks forward to esta  blishing long-term cooperative relationships with customers from both domestic and international markets.

FAQ

Q1: What is a modular steel expansion joint? 
A: It is a steel joint with center beams and support bars that absorbs large bridge movement.

Q2: What movement range does it handle? 
A: Modular steel joints handle 160-1200 mm depending on the module count.

Q3: How is the joint kept watertight? 
A: Elastomer seal strips close the gaps between the steel center beams.

Q4: What steel is used? 
A: Carbon steel with hot-dip galvanizing, or stainless steel for aggressive environments.

Q5: Where is it used? 
A: Highway, railway, municipal, and long-span bridges with large deck movement.

Q6: What temperature range does it handle? 
A: Service temperature is -40°C to +80°C.

Q7: Can movement range be customized? 
A: Yes -- module count and layout are designed to the bridge movement requirement.