Capturing Motion,
Crafting Stories

-- to record the research project of Submerged Floating Tunnel engineering technology of Tianjin institute of water transportation engineering, ministry of transport

Submerged Floating Tunnel is a kind of large sea-crossing traffic structure suspended in water, it mainly solves the problem of mankind's crossing of deep water and wide water in the future.

The technical core of underwater suspension tunnel construction lies in the dynamic control and structural safety of the tunnel. Zhang Huaqing, vice President and chief engineer of Tianjin institute of water transportation engineering, ministry of transport, think that traffic safety is the primary problem, Under the complex dynamic system of wave and tide, its structure should be stable, and its stability and safe operation should be maintained under the abnormal loads such as submarine collision and shipwreck.

From Yang Zhiwen, associate director in the basic theory of ocean hydrodynamics and the interaction between waves and floating structures, we know that the problem of measuring the motion deformation of the tunnel is a major difficulty in the whole project, the measure requires the experimental accuracy of millimeter level and the synchronization error of sub-millisecond level. This is difficult to achieve with conventional instruments, but a NOKOV optical motion-capture system enables such high-precision measurements.

Zhang Huaqin, director of Tianjin institute of water transportation engineering, ministry of transport, said that suspension tunnel research can make our diving in the ocean offshore activities in the past, to the deep sea for development and expansion, and can bring new materials, new technology and equipment technology the overall level of science and technology breakthrough, create very good conditions for China's science and technology to go in the forefront of the world.