Symposium on Engineering Technology Research of Submerged Floating Tunnel (SFT) Opened
The construction of SFTs is one of the 60 major scientific issues in China's 12 key areas for the future released by the China Association for Science and Technology in 2018; in addition, it is a major scientific issue with forward-looking strategic commanding height determined based on the issue collection by associations and association communities throughout the country, primary selection by 2,142 front-line scientists and final selection by 33 academicians. It is of great significance for solving major traffic projects such as fjord crossing and deep sea channels as well as leading the development of transportation in the future.
On June 13, 2018, China Communications Construction Company Ltd. took the lead in establishing the "CCCC SFT Technical Joint Research Team". The research team cooperated with several domestic and foreign first-class scientific research, design and construction units, such as Tianjin Research Institute for Water Transport Engineering, M.O.T, Tunnel Engineering Consultants (TEC) and Delft University of Technology (Tu Delft) in conducting a series of special researches on hydrodynamics and structures, anchoring systems, connection structures, engineering materials, construction methods and equipment involved in SFT through mathematical models, physical models, theoretical analysis, design evaluation, etc. based on the industry-university-research collaboration as well as the international and domestic parallel research modes, which actively led and promoted the development of many disciplines and fields such as hydrodynamics, fluid-solid coupling, structural and geotechnical engineering and engineering materials, provided important scientific and technological support for China's transportation construction and further enhanced China's core competitiveness in major engineering and technical fields.
According to the agenda, the symposium was held in Tianjin and Zhongshan in two phases from September 17 to 21. In the Tianjin Research Institute for Water Transport Engineering, M.O.T, representatives of the symposium visited the test of the small-scale SFT water tank physical model, the test of the segmental water tank physical model considering the actual stiffness of the structure, the L-shaped pool and the 2D large-scale water tank, listened to the introduction to the test results of the small-scale SFT model made by Tianjin Research Institute for Water Transport Engineering, M.O.T and TEC&TUD, and discussed the test results of the small-scale water tank physical model as well as the medium-scale and large-scale 2D physical model test schemes. In the main venue in Zhongshan, the experts and scholars attending the symposium listened to more than 10 special reports including the scheme for the test of the segmental water tank physical model considering the actual stiffness of the structure, the overall physical model test scheme, guide to research on the physical model test, analysis and research on the hydrodynamic and structural model, research on the structural hydrodynamic characteristics and response, numerical model development and research, SFT design criteria, research on the SFT structure design, research on the anchor cable type SFT structural system, research on the joint and shore connection structures, research on the method statement and equipment, research on the development and application of new materials, and research on key technologies for surveys; in addition, they conducted the evaluation and view exchange over relevant research outlines and risks and determined research directions and priorities to actively promote the smooth performance of various research and experiments.