Modular Expansion Joints Accommodate 160–3000 mm Movements

Modular expansion joints, 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. modular expansion joints are suitable for longitudinal movements of 80 mm to 1200 mm.

Having good bearing capacity and stability, modular expansion joints 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.

This is the top of modular expansion joint.

MEJ-1: Top of modular expansion joint

This is the bottom of modular expansion joint.

MEJ-2: Bottom of modular expansion joint

Structure

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

Specification

Table 1: Specification of Modular Expansion Joints
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

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.

Application

Modular expansion joints 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.

Three workers are setting the modular expansion joints in the large-span bridge.

MEJ-3: The large-span bridge is being built with modular expansion joints

This is a large-span bridge that has been constructed with modular expansion joints.

MEJ-4: A large-span bridge that has completed with modular expansion joints

Four workers are building the bridge with modular expansion joints.

MEJ-5: Modular expansion joints are being installed in bridge

This is a bridge that has been built with modular expansion joints.

MEJ-6: A bridge that has completed with modular expansion joints

A crane is setting the modular expansion joints in expressway.

MEJ-7: A expressway is being built with modular expansion joints

This is expressway that has constructed with modular expansion joints.

MEJ-8: The modular expansion joints in a completed expressway

Inquiry for Our Product

Hengshui JingTong Rubber Co., Ltd.
E-mail: sales@bridgejoints.com

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