Yong River Tunnel
HEIGHT: 7.65 m
WIDTH: 11.9 m
TOTAL IMMERSED LENGTH: 420 m
DEPTH AT BOTTOM OF STRUCTURE: - 15.55 m
ENVIRONMENTAL CONDITIONS:
Near river mouth. Rapid rate of siltation.
FABRICATION METHOD:
Cast in dry dock in one batch.
WIDTH: 11.9 m
TOTAL IMMERSED LENGTH: 420 m
DEPTH AT BOTTOM OF STRUCTURE: - 15.55 m
ENVIRONMENTAL CONDITIONS:
Near river mouth. Rapid rate of siltation.
FABRICATION METHOD:
Cast in dry dock in one batch.
Ningbo,
China
Ningbo Municipal Government
Local Construction Companies
Zhejiang Communication Design Institute and Shanghai Tunnel Engineering Design Institute
4 - 85 m 1 - 80 m
420m
15.55m
Project construction
1996-04-30
5(?)
One tube for two lanes
7.65m
11.9m
On soft soil (clay)
Cast in dry dock in one batch.
Near river mouth. Rapid rate of siltation.
Lowered using steel pontoon of 46 m long
Gina and Omega joint
Steel plate on bottom slab.
60 cm crushed stone and 40 cm cement mortar
Layer of soil