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.

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.

Modular Expansion Joint ,
Email Nancy at TradingNancy@outlook.com or calling at +86 15731809416