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Testing and Analysis of Mooring Force and Motion Response during Immersion of Tunnel Elements
(1 CCCC Fourth Harbor Engineering Institute Co. Ltd., Guangzhou 510230; 2 The second Engineering Company of CCCC Fourth Harbor Engineering Co. Ltd., Guangzhou 510300)
Abstract In the process of mooring and sinking tunnel elements, the mooring force and motion response of the tun?
nel elements are two key parameters that govern construction quality, and even the safety of the immersed tunnel. After calculations, processing, calibration, and waterproofing treatment, a new type of mooring force sensor was designed and made to solve the difficulties in monitoring construction of the Zhoutouzui immersed tunnel project in Guangzhou. These difficulties included a large load, deep water resistance and installation difficulty. Based on the construction technology of immersed tunnel elements, the tests of the mooring force and attitude of elements were carried out, the current resistance coefficient of the tunnel element (a floating structure with a large block coefficient) was analyzed, and then the field test results and numerical analysis results were compared. The study results show that the sensors can be made and installed conveniently while meeting the requirements of monitoring; the coefficent of lateral flow resistance should be 2.05 for immersed element; and the calculation results agree well with
the test data.
Abstract：
In the process of mooring and sinking tunnel elements, the mooring force and motion response of the tun?
nel elements are two key parameters that govern construction quality, and even the safety of the immersed tunnel. After calculations, processing, calibration, and waterproofing treatment, a new type of mooring force sensor was designed and made to solve the difficulties in monitoring construction of the Zhoutouzui immersed tunnel project in Guangzhou. These difficulties included a large load, deep water resistance and installation difficulty. Based on the construction technology of immersed tunnel elements, the tests of the mooring force and attitude of elements were carried out, the current resistance coefficient of the tunnel element (a floating structure with a large block coefficient) was analyzed, and then the field test results and numerical analysis results were compared. The study results show that the sensors can be made and installed conveniently while meeting the requirements of monitoring; the coefficent of lateral flow resistance should be 2.05 for immersed element; and the calculation results agree well with
the test data.
2017, Vol. 54 