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 Click to enlarge image
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 Model Number |
ERJ |
Features
|
Application
|
Allow expansion of over 200 mm into the Longitudinal(X), Transverse(Y)
directions and also Vertical direction movements (Z) in seismic applications |
|
Driver Safety
|
The wheel can maintain the continuity with the flat appearance of the
upper plate in the finger type |
|
Durability
|
Row material is strong with an aluminum and steel composite structure
and it is composed of a simple beam sliding on the lower plate where the
one side of the upper plate is symmetrical so as to prevent the damage of
the upper plate with its strong durability from the wheel load and also
has an excellent resistance against abrasion and corrosion. |
|
Vibration & Noise
|
The Rubber Seal between the upper plate and lower plate absorbs the shock
generated from the contact of the vehicle wheel and reduces the vibration
and noise |
|
Easy Maintenance
|
The system consists of a separate unit structure so that it is easy to
replace unit by unit in case of problems. Also, in case of leakage due to
the Rubber Seal being damaged, its, so called, sliding structure makes it
possible to replace the Rubber Seal from under the lower laying gap of the
bridge slab(under the bridge); Therefore, this does not generate traffic
congestion or any civil claims from drivers. |
|
Economical Efficiency
|
It allows three directional movements of X, Y, and Z of earthquakes and
can be reused when the seismic behavior is terminated as long as the seismic
damage does not break the bridge itself. In addition, it has a safe structure
compared to the existing expansion and has an excellent long-term economical
efficiency in the maintenance by making it possible to replace the Rubber
Seal only which has the highest frequency of damage. |
Deal Drawing
Ground Plan
Standard cross-sectional draw
ERJ dimensions table
|
Model
name
|
Maximum
expansion
|
Product
dimension
|
Block
out
|
Laying
gap
|
Bolt
(per M)
|
Amount of
reinforced
steel bar(kg)
|
Concrete/m
(m3)
|
|
A
|
B
|
C
|
D
|
Min.
|
Stan.
|
Max.
|
|
ER-300
|
300
|
554
|
612
|
320
|
820
|
91
|
241
|
391
|
M16*55, 6ea
|
M16*70, 10ea
|
55.470
|
0.403
|
|
ER-400
|
400
|
654
|
712
|
320
|
920
|
91
|
291
|
491
|
M16*55, 6ea
|
M16*70, 10ea
|
56.690
|
0.435
|
|
ER-500
|
500
|
754
|
812
|
350
|
1070
|
91
|
341
|
591
|
M16*55, 6ea
|
M16*70, 10ea
|
59.510
|
0.515
|
|
ER-600
|
600
|
854
|
912
|
350
|
1170
|
91
|
391
|
691
|
M16*55, 6ea
|
M16*70, 10ea
|
60.730
|
0.550
|
|
ER-700
|
700
|
954
|
1012
|
350
|
1320
|
91
|
441
|
791
|
M16*55, 6ea
|
M16*70, 10ea
|
63.170
|
0.603
|
|
ER-800
|
800
|
1054
|
1112
|
350
|
1470
|
91
|
491
|
891
|
M16*55, 6ea
|
M16*70, 10ea
|
65.620
|
0.655
|
1. Number of steel bar may differ depending onthe condition
2. The size described the above may differ depending on the dimnesion and characteristics
of the bridge.
Compariosn Table of earthquake-resistant expansion joints
|
Classification
|
Our products
|
Other products
|
|
Structure
|
Simple |
Complicated |
|
Movements
|
Allows enough movements of X, Y, Z axles |
Limited vertical movement |
|
Maintenance
|
Separated unit structure
→ partial repair
(only the Rubber Seal from under the bridge)
→ low maintenance cost
→ no traffic control |
Monolithic structure
→ no partial repair, but the whole system(entire system must be replaced)
→ high maintenance cost
→ full traffic control |
|
Applicability
|
Easy to construct (Simple Structure) |
Requires heavy equipment to install
due to the monolithic structure
Requires precise construction
|
|
Flatness of the road
|
Smooth transition with its finger type structure |
Its discontinuous structural feature makes heavy noise and low quality
of riding |
|
Product price
|
Low, ,USD 9,700 / meter |
High, USD 17,100 / meter |
Characteristics of ERJ movement
Detailed drawing of lower side rubber seal
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