Pearl River Tunnel
HEIGHT: 7.95 m
WIDTH: 33.0 m
TOTAL IMMERSED LENGTH: 457 m
DEPTH AT BOTTOM OF STRUCTURE: - 13.16 m
ENVIRONMENTAL CONDITIONS:
High water velocity to more than 2.0 m/sec. Elements stabilized by added water ballast.
Earthquake zone.
FABRICATION METHOD: In dry dock at site of cut and
cover tunnel, one at a time for elements over 100 m. long.
Dry dock provided with a steel gate. Cooling water was
used in wall pours.
WIDTH: 33.0 m
TOTAL IMMERSED LENGTH: 457 m
DEPTH AT BOTTOM OF STRUCTURE: - 13.16 m
ENVIRONMENTAL CONDITIONS:
High water velocity to more than 2.0 m/sec. Elements stabilized by added water ballast.
Earthquake zone.
FABRICATION METHOD: In dry dock at site of cut and
cover tunnel, one at a time for elements over 100 m. long.
Dry dock provided with a steel gate. Cooling water was
used in wall pours.
Guangzhou,
China
Guangzhou Municipal Government
Local construction companies
Guangzhou Metro Design Institute
105 m; 120 m; 120m; 90 m, 22 m
457m
13.16m
Project construction
1993-04-30
5
Two tubes for two lane traffic, one tube for two tracks (metro)
7.95m
33m
Heavily weathered rock on river bottom.
In dry dock at site of cut and
cover tunnel, one at a time for elements over 100 m. long.
Dry dock provided with a steel gate. Cooling water was
used in wall pours.
cover tunnel, one at a time for elements over 100 m. long.
Dry dock provided with a steel gate. Cooling water was
used in wall pours.
High water velocity to more than 2.0 m/sec. Elements stabilized by added water ballast.
Earthquake zone.
Earthquake zone.
Lowering by means of a 500 ton crane barge. Two alignment towers were used on the
elements. Three point temporary foundation, in board supports on roof of previous
element and two jacks on temporary support on outboard end.
elements. Three point temporary foundation, in board supports on roof of previous
element and two jacks on temporary support on outboard end.
Gina and Omega joint.
Shrinkage control by cooling during concrete walls pours and division of elements into
shorter lengths, continuous reinforcement. Steel plate attached to bottom slab.
shorter lengths, continuous reinforcement. Steel plate attached to bottom slab.
Sand-flow.
1 m backfill of crushed stone