Abstract The construction window period of offshore immersed tunnel elements is short and the ocean environ? ment is complex and changeable. In order to ensure the safety and control of the tunnel elements during the towing process, it is necessary to study the motion response of the immersed tunnel elements under the action of the wind,waves and currents during the towing formation navigation, consider the yawing effect of the lateral deviation force generated by the wind, waves and currents on the tunnel element formation, and analyze the ability of the tugboat to correct the deviation of the tunnel element formation. Taking the floating of the tunnel elements of the lot S08 of the Shenzhen-Zhongshan sea-crossing project as an example, it introduces a numerical calculation method for the analysis of the squat of the tunnel elements during the towing process on long-distance and complex route through the calculation example of a certain tunnel element, and validates the calculation results through empirical formulas.Through the analysis of the motion response of the tunnel element, this paper proposes a deviation correction analysis procedure applicable for the towing process of the tunnel element and offers the corresponding control measures for related specific problems.
Abstract：
The construction window period of offshore immersed tunnel elements is short and the ocean environ? ment is complex and changeable. In order to ensure the safety and control of the tunnel elements during the towing process, it is necessary to study the motion response of the immersed tunnel elements under the action of the wind,waves and currents during the towing formation navigation, consider the yawing effect of the lateral deviation force generated by the wind, waves and currents on the tunnel element formation, and analyze the ability of the tugboat to correct the deviation of the tunnel element formation. Taking the floating of the tunnel elements of the lot S08 of the Shenzhen-Zhongshan sea-crossing project as an example, it introduces a numerical calculation method for the analysis of the squat of the tunnel elements during the towing process on long-distance and complex route through the calculation example of a certain tunnel element, and validates the calculation results through empirical formulas.Through the analysis of the motion response of the tunnel element, this paper proposes a deviation correction analysis procedure applicable for the towing process of the tunnel element and offers the corresponding control measures for related specific problems.
WU Jiancheng
.Research on Towing Issues of Immersed Tunnel Elements on Long-distance and Complex Route[J] MODERN TUNNELLING TECHNOLOGY, 2021,V58(2): 145-150
2021, Vol. 58 