Steel Finger Comb Plate Expansion Joints for Highway

Product Description

Modular Bridge Expansion Device

GQF-E type, GQF-Z type, GQF-C type, GQF-F type bridge expansion device belongs to a single-slit modular expansion device for Bridges with expansion capacity below 80mm, and is composed of E, Z, C, F type steel and rubber strip. It has the advantages of low installation height, simple structure, convenient installation, safety and durability. At the same time, it is suitable for replacing the old bridge expansion device.

Product Name	Bridge Expansion Joint
Material	Steel Section, Rubber Seal
Type	GQF-C,GQF-Z,GQF-L,GQF-E,GQF-F,GQF-MZL
Movements	GQF-C,GQF-Z,GQF-L,GQF-E,GQF-F:40-60-80mm,GQF-MZL: 80-1200mm
Certification	ISO9001
Feature	-Accommodate any bridge deck expansion joint movement -A smooth transition for vehicular traffic -Durable neoprene trough to channel water away from the structure -Replaced without the need for excavation of the anchorage system -Lasts the life of the bridge deck under normal circumstances
Function	-Can expansion and contraction freely and secure. -Comfortable driving, no noice. -Waterproofing, can prevent rubbish and soil into the joints.

The Size of Steel Bridge Expansion Joint
The expansion range contains 15 levels( from 80mm to1200mm)that can meet the requirements of various of bridges,In fact in our before orders,the highest expansion range was up to about 1700mm. And we use EPDM rubber within the bridge expansion joint, the suitable temperature range is from -40ºC-60ºC. The work system of the bridge expansion joint includes three systems.Support ratation system,Waterproof sealing system and Anchorage system.

We wil design and produce suitable products according your detailed drawing you need.
Bridge bearings and expansion joint are important parts of whole bridge components,  but the amount money that spent on bridge bearing and expansion joint is only 2-3.5%, it is absolutely a wise choice to evaluate it within the whole project to prevent failed choice bringing unnecessary costs.

Q&A:

Q:Please describe the types of the type steel expansion joint?
A:Type steel expansion joint can be divided into the following types according to the performance and installation methods:
GQF-C type,GQF-Z type,GQF-L type,GQF-F type.In these types,GQF-MZL type steel expansion joint device is made of hot-rolled overall forming profiled bar design of bridge expansion joint device.The GQF-C type,GQF-Z type,GQF-L type,GQF-F type steel expansion joint apply to the bridge joint which expansion volume is less than 80mm.
GQF-MZL type steel expansion device is the type steel expansion joint which is made of edge beam, beam, beam and linkage mechanism.It's suitable the medium and large span bridge which its expansion volume is between 80mm with 1200mm.

Q:What are the structural requirements of type steel expansion joint?
A: 1.In the two directions of being parallel and being perpendicular to the axis of the bridge are free to flex.
2.Firm and reliable.
3.There is smooth and there has no sudden jump or noise when the vehicle is passing by.
4.Waterproof and prevent infiltration of debris blocking.
5.It's simple and convenient to Installation, inspection, maintenance and removal of dirt.

Q:What are the matters should be attention to about the type steel expansion joint?
A:The following matters should be attention to:
1.If the position of the embedded steel bars on the beam plate is incorrect or there is no pre embedded reinforcement,you need to use the reinforced fill bar.
2.Clean and link the anchor after cutting.
3.The welding seam of reinforcing steel should be enough and the welding should be firm.
4.The surface elevation of concrete should be correct.
5.If you want the effective telescopic performance,you should ensure the anchor should be firm.
6.The curing time of concrete should be enough.Don't open the traffic because of the lack of maintenance time.