液化天然气项目取水结构整体物理模型试验

对深圳液化天然气(LNG)项目取水箱涵采用1∶36.5缩比进行各种水位与不规则波组合作用下的波浪物理模型试验。观测取水口戽头、方涵及围护结构的稳定性,并对原设计方案进行优化,采用FL-NH型运动测量系统测量取水戽头及引水方涵的位移量;并测量取水口戽头及第一节方涵的波压力,得到戽头及第一节方涵所受到的波浪力。结果表明:随着水位的降低,各点测得的波压力和波浪力呈现出明显增大的趋势;取水量对取水戽头的稳定和波压力影响较小,围护结构对波压力影响较大。

Physical model test on water intake structure for liquefied natural gas project

The physical model wave test on water intake structure for liquefied natural gas(LNG) project in Shenzhen was carried out under the conditions of different water levels and irregular waves.The model scale was 1∶36.5.During the test,the stabilities of the water intake bucket and the first quadrate culvert and the enclosure structure were observed,and the original design scheme was optimized using the FL-NH motion measuring system to measure the water bucket head and quadrate culverts displacement.The wave pressures of the water intake bucket and the first quadrate culvert were measured in this test.The wave forces suffered the water intake bucket and the first quadrate culvert were gotten.The test results show that the measured wave pressure and wave forces increase significantly with water level decreasing.The quantity of water has little influence on the stability of the water intake bucket and wave pressure,and the enclosure structure has a great impact on the wave pressure.