Thu Thiem Tunnel (Saigon East-West Highway)

Ho Chi Minh City, Viet Nam
HEIGHT: 8.9 m
WIDTH: 33.3 m
TOTAL IMMERSED LENGTH: 371 m
DEPTH AT BOTTOM OF STRUCTURE: Maximum depth below water level is 24.6 m
t120
t120-thu-thiem
Ho Chi Minh City, East-West Highway Project Management Unit
Obayashi Corporation
Immersed tunnel by Oriental Consultants Co., Ltd.
3 elements @ 92.5 m 1 element @ 93.5 m
371m
24.6m
2009-05-01
4
3 lanes and separated pedestrian in each direction
8.9m
33.3m
The 2 of 3 lanes are expected for motorcycle traffic.
4 tunnel elements are fabricated in casting basin at the same
time at approx. 20 km down stream from the site (Dong Nai
Province).
High velocity up & down stream and the big tidal range.
Narrow width of navigation channel and heavy shipping traffic.
Pontoon arrangements
Flexible seismic joints using
stopper cable.
Watertight concrete with steel membrane at bottom and wall, and sheet membrane on the roof.
Sand jetting.
Gravel sand
Grade of concrete: 30 MPa at 91 days
Temporary condition: 1.03 Permanent condition: 1.10 without cover material