The modulus type flexible device of big displacement is the upgrading regeneration product that our country introduced to the market in the 1990s, is it assemble with domestic hot rolling heterotypic steel and sealed rubber for main material to bring. Its structure has long performance life rationally, it is convenient to install and maintain , is superior to the rubber of modes in Chinese operatic music to sew. The modulus type flexible device of big displacement is divided into two kinds of patterns: Single group type expansion joint and many group type expansion joints.
|
 Single group type expansion joint
Single group is it take and make up by section steel , anchor firm component and sealed rubber to sew , allow displacement amount to be 020mm, the main pattern is as follows, GQF-C-40, 60, 80 types , QMF (SSF ) - 80 types , SD-80 , 100 , 120 types,etc.
|
Many group type expansion joints
It sew group not many from roof beam , hitting roof beam , supporting crossbeam , displacement control cabinet of , born not lasting pieces of seat , not compressing tightly not propping up there aren't seat , anchor component and the rubber not sealed not firm , every group's displacement is 0-80mm , demand to confirm the group counts according to the practical displacement amount of the bridge, the greatest displacement amount can reach 1200mm at present. The main form is as follows, XF type is oblique to the supporting type flexible device . SSFB type is straight to the supporting type flexible device .
 |
 |
Characteristic of the products:
1.It is reliable to be firm
Flexible side roof beam of device this hit roof beam adopt 16Mn steel is it , can bear large flow to roll , large tonnage vehicle vertical to load with competence bludgonning into. Anchor its firm between component and roof beam body , abutment bury reinforcing bar weld firm , can is it transmit to mound platform reliable to load vehicle in advance, the structure is rational , sturdy and duable, suitable for the designing resistance vapour - exceeds 20 , hang- the bridge of 120.
2.Flexible and sensitive
Device this many displacement control system that group sew is it pigeonhole pieces of flat ,etc. elastic component or oblique to support by rubber spring , four Fluorine component make up to bear, every group is even in displacement, rub obstruction flexibly small.
3.Bridge floor smooth-going driving a vehicle comfortable
This device can not only can guarantee the flexible displacement of freedom of the roof beam body make the seam of bridge floor form a smooth-going whole but also, it is stable and comfortable to drive a vehicle.
4.Anticorrosion of the stagnant water
Neoprene sealing strip that inlaid into in the girder steel cannelure of every group. According to the wide whole processing of the bridge , have good dustproof function out of shape and waterproof of elasticity ; Can protect flexible device component and roof beam bottom prop up flat avoid soaking effectively.
5.The shifting amount is great, it is convenient to choose
This displacement amount of device designs making according to the modulus, from 80 to 1200mm. Construction department can select bridge design freely according to the real flexible quantity of top structure of the bridge . |
Sew the expansion joint only:
1.Compress strength as 1.0KN/m while shrinking;
2.Vertical shear strength is 2.0KN/m in the working range of expansion joint.
Sew more expansion joints:
1.Compress strength 1.0KN/m while shrinking;
2.Draw strength 4.0KN/m while upholding ; 3.Vertical shear strength is 3.0KN/m in the working range of expansion joint |
 |
|
