Introduction of Bridge expansion joints:
Bridge expansion joints are important components in the design and construction of bridges
that allow for controlled movement and expansion of the bridge
structure. They are essential for accommodating the natural thermal
expansion and contraction of the bridge materials, as well as other
movements caused by factors like traffic loads, wind, and seismic
activity.
Bridge expansion joints are a critical component of bridge design,
used to accommodate the movement and deformation of bridge
structures due to factors such as thermal expansion and
contraction, live loads, and ground movements.
Common types of bridge expansion joints include:
- Finger joints
- Sliding plate joints
- Modular expansion joints
- Elastomeric expansion joints
- Compression seal joints
Bridge expansion joint: refers to the expansion joint between two beam ends, between beam
ends and abutment, or on the hinge position of the bridge to meet
the requirements of bridge deck deformation. In parallel and
perpendicular to the bridge axis, firm and reliable, the vehicle
should be smooth and outdated without jump and noise; and it can
prevent rainwater and garbage soil from infiltration and blocking;
the installation, inspection, maintenance and dirt elimination
should be simple and convenient. At the expansion joint, the
railing and the bridge deck pavement should be disconnected.
Accommodate thermal expansion and contraction of the bridge
structure.
Allow for vertical and horizontal movements caused by traffic
loads, wind, and seismic activity.
Prevent the transmission of stresses and deformations between
adjacent bridge sections.
Provide a smooth transition for vehicular and pedestrian traffic.
Features of bridge expansion joints include:
Modularity and Adjustability:
Many expansion joint designs are modular, allowing for easy
installation, repair, and replacement of individual components as
needed.
Some joints may also incorporate adjustable features to accommodate
changes in the bridge structure or to fine-tune the joint's
performance over time.
Maintainability:
Expansion joints are designed with accessibility and ease of
maintenance in mind, facilitating regular inspections, cleaning,
and replacement of worn or damaged components.
This ensures the continued functionality and safety of the bridge
expansion joint system.
Classification of Bridge expansion joints : butted type, steel support type, combined shear type (plate),
modular support type and elastic device.
Evercross Steel Bridges Overview :
| EVERCROSS STEEL BRIDGE SPECIFICATION |
EVERCROSS
STEEL BRIDGE | Bailey bridge(Compact-200, Compact-100, LSB, PB100, China-321,BSB)
Modular bridge( GWD, Delta, 450-type,etc),
Truss Bridge,Warren bridge,
Arch bridge, Plate bridge,Beam bridge,Box girder bridge,
Suspension bridge,Cable-stayed bridge,
Floating bridge,etc |
| DESIGN SPANS | 10M TO 300M Single span |
| CARRIAGE WAY | SINGLE LANE, DOUBLE LANES,MULTILANE,WALKWAY,ETC |
| LOADING CAPACITY | AASHTO HL93.HS15-44,HS20-44,HS25-44,
BS5400 HA+20HB,HA+30HB,
AS5100 Truck-T44,
IRC 70R Class A/B,
NATO STANAG MLC80/MLC110.
Truck-60T,Trailer-80/100Ton,etc |
| STEEL GRADE | EN10025 S355JR S355J0/EN10219 S460J0/EN10113 S460N/BS4360 Grade 55C
AS/NZS3678/3679/1163/Grade 350,
ASTM A572/A572M GR50/GR65
GB1591 GB355B/C/D/460C,etc |
| CERTIFICATES | ISO9001, ISO14001,ISO45001,EN1090,CIDB,COC,PVOC,SONCAP,etc |
| WELDING | AWS D1.1/AWS D1.5
AS/NZS 1554 or equivalent |
| BOLTS | ISO898,AS/NZS1252,BS3692 or equivalent |
| GALVANIZATION CODE | ISO1461
AS/NZS 4680
ASTM-A123,
BS1706
or equivalent
|
