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板桩墙明沟结构是海岸电厂取水工程的一种结构型式。根据电厂取水工程初步设计方案,对电厂取水工程结构进行离心模型试验研究,分析板桩墙结构在波浪荷载作用下的安全性。试验表明,悬臂式斜拉桩板桩墙结构在设计最大波浪荷载作用下会产生较大的水平位移,墙身弯矩较大;引起板桩墙位移、弯矩的主要荷载是海床面以上的波浪荷载,板桩墙承载力主要由桩墙被动侧土体抗力提供。工程中板桩墙入土深度的增加不能有效改善墙体水平位移和墙身弯矩,不会提高板桩墙结构的承载能力。
Pile wall structure of the ditch is a coastal power plant water intake engineering structure. According to the preliminary design plan of the water intake project in power plant, the centrifugal model test on the water intake engineering structure of the power plant is conducted, and the safety of the sheet pile wall structure under the wave load is analyzed. The test shows that the cantilever structure of pile wall with piles can produce large horizontal displacement under the maximum wave load, and the bending moment of the wall body is relatively large. The main load that causes the displacement and bending moment of sheet pile wall is above sea level Of the wave load, sheet pile wall bearing capacity mainly by the passive side of the pile wall to provide soil resistance. The increase of the depth of the pile wall embedded in the project can not effectively improve the horizontal displacement and the wall bending moment of the wall, and will not increase the bearing capacity of the pile wall structure.