In order to study whether the platform and anchoring optimization scheme of"National Sea Test 1"meet the design requirements,a 1∶30 experimental platform model is developed using physical model testing methods to optimize the anchoring scheme of the"National Sea Test 1"platform at the National Marine Testing Ground.A study on the motion response of the model under two-point lying chain mooring state is conducted with the combined function of over a hundred sets of irregular waves,fixed length winds,and equivalent uniform currents with different wave heights,wave periods,and wave directions at the Marine Dynamic Environment Laboratory of the National Ocean Technology Center.The test results and corresponding design indicators of the test platform are analyzed.The results show that under the same sea conditions,when the wind and waves are in the same direction as the current,the motion response of the test platform is more severe.When the flow is 1.14 m/s and the sea condition is level 4,the maximum roll angle of the test platform is 10.41°,and the"National Sea Test 1"platform can't carry out normal lifting work;when the flow is 1.14 m/s and the sea conditions are level 6,the maximum roll angle of the test platform is 15.07°,and the test equipment carried on the"National Sea Test 1"platform can't work properly;when the flow is 1.14 m/s and the sea condition is level 8,the maximum roll angle of the test platform is 20.21°.The experimental platform is unsafe,and the avoidance measures should be taken;the"National Sea Test 1"meets the design requirements for resistance to level 7 wind and waves.The research results have verified the indexes of the improved National Marine Comprehensive Test Site"National Sea Test 1"platform.Therefore,it is recommended to stop the testing operation of the"National Sea Test 1"platform under level six sea conditions,and necessary risk avoidance measures should be taken under level eight sea conditions.The study provides a reference for the hydrodynamic research of similar new offshore platforms.
关键词
风浪流耦合作用/锚泊式海上试验平台/物理模型试验/水动力特性/最大工作海况
Key words
wind wave current coupling/anchored offshore testing platform/physical model testing/hydrodynamic characteristics/maximum working sea conditions
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