Modular Expansion Joint Steel Bridge Expansion Joint for Bridge Construction

Product Description

Product Description

Modular Expansion Joints Accommodate 160–3000 mm Movements

    , also called GQF-MZL modular bridge joints, are composed by boundary beams, middle beams, cross girders, displacement control systems, bridge bearings, anchoring components and rubber sealing belts. are suitable for longitudinal movements of 80 mm to 1200 mm.

    Having good bearing capacity and stability, can accommodate movements in every direction and rotations about every axis. Their individual displacement control and load transfer systems enable bridges to adapt the movement of the beam caused by temperature and ensure the traffic safety.

Top of modular expansion joint

Bottom of modular expansion joint

Functions

*Large movement adaptation: Modular multi-gap design, movement 80-1200mm

*Waterproof sealing: Rubber sealing strip prevents water and debris infiltration

*Load transmission: Support crossbeams uniformly transfer wheel loads to girders

*Shock absorption: Elastic sealing strip cushions impact and reduces noise

*Displacement coordination: Control system maintains uniform expansion of all gaps

Structure

    are composed by boundary beams, middle beams, cross girders, displacement control systems, bridge bearings, anchoring components and rubber sealing belts.

Types and Sizes of
Type	B1(mm)	B2(mm)	H(mm)	F(Min.)(mm)	F60(mm)	F70(mm)	F80(mm)	G(WT)(kg/m)
MEJ-140	400	400	400	140	260	280	300	150
MEJ-220	480	300	400	220	400	430	460	210
MEJ-300	560	300	400	300	540	580	620	250
MEJ-380	640	300	400	380	680	730	780	290
MEJ-460	720	300	400	460	820	880	940	410
MEJ-540	800	300	420	540	960	1030	1100	500
MEJ-620	880	300	440	620	1100	1180	1260	596
MEJ-700	960	300	450	700	1240	1330	1420	745
MEJ-780	1040	300	460	780	1380	1480	1580	1060
MEJ-940	1200	300	500	940	1660	1780	1900	1340

Specification

Feature

    *Safe & reliable. The load-bearing structure and displacement control system of modular expansion joints are separate parts. When under stress, these two parts will not interfere with each other and have a clear division of labor to provide security assurance.
    *Uniform displacement. Modular expansion joints meet the requirements of high processing and assembling precision to make sure that they can be flexible and proceed uniform displacement.
    *Strong adaptability. Each junction adopts the structure which can both slide and be rotatably to content the demand of various kinds of bridges.
    *Save steel. In every displacement control cabinet, all the middle beams are supporting one cross beam which is benefit to large-displacement bridges. This structure can reduces the quantity of beams, the volume of control cabinet and saves steel.

Type	Displacement (mm)	Width (mm)	Interval (mm)	Height of Support Beam (mm)
MZL-80	80	80–160	50–130	700
MZL-160	160	160–320	80–240	700
MZL-240	240	240–480	160–400	800
MZL-320	320	320–640	220–540	800
MZL-400	400	400–800	310–710	800
MZL-480	480	480–960	400–880	800
MZL-560	560	560–1120	490–1050	800
MZL-640	640	640–1280	550–1190	800
MZL-720	720	720–1440	590–1310	800
MZL-800	800	800–1600	620–1420	900
MZL-880	880	880–1760	700–1580	900
MZL-960	960	960–1920	780–1740	900
MZL-1040	1040	1040–2080	810–1850	900
MZL-1120	1120	1120–2240	890–2010	900
MZL-1200	1200	1200–2400	970–2170	900

Installation

Product Details

for longitudinal movements of 80 mm to 1,200 mm can be widely applied on the bridges which are slope, wide, curved and skew. They are used in highway bridge decks, bridgehead and other places to prevent bridges from appearing cracks cause by climate change. It also can be used in expressway.

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 establishing long-term cooperative relationships with customers from both domestic and international markets.

FAQ

1.What is the maximum movement capacity?

A:The modular multi-gap design supports movements up to 1200mm.

2.How long is the warranty period?

A:We provide a 2-year warranty after the product leaves the factory.

3.Can the product size be customized?

A:Yes, the size is fully customized according to customer needs.

4.How long does it take to deliver?

A:The leading time is within 7 days after deposit.

5.What certifications does the product have?

A:The product holds ISO:9001 and RoHS certifications.

6.What is the design life of the expansion joint?

A:It features excellent durability with a 30-year design life.

7.Does the product offer noise reduction?

A:Yes, it reduces noise from traffic by up to 80%.