本文選題：海洋橋梁　切入點：波浪壓力　出處：《西南交通大學學報》2017年03期

【摘要】：為研究海洋橋梁施工圍堰在波浪作用下波浪壓力的分布規(guī)律,通過現(xiàn)場實測及數(shù)值模擬的方法,對海洋橋梁施工過程中使用的大尺度鋼圍堰表面波浪壓力進行了研究.基于三維繞射理論,使用代表波法,對實測有效波高進行規(guī)則波模擬,確定了波壓力峰值沿圍堰表面的分布規(guī)律以及隨水深的變化規(guī)律,并對圍堰表面的波浪動壓力峰值進行了分析,并與實測值進行了對比.結(jié)果表明:三維繞射理論能合理地模擬圍堰表面波壓力分布;在繞射效應的影響下,波浪總壓力、波浪動壓力均呈現(xiàn)出迎浪側(cè)大、背浪側(cè)小的特點,波浪動壓最大增幅可達125%;實測總壓力隨水深增加而增加,波浪動壓力峰值隨水深增加而減小.
[Abstract]:In order to study the wave pressure distribution law of ocean bridge construction cofferdam under wave action, the wave pressure on the surface of large scale steel cofferdam used in the construction of ocean bridge was studied by the method of field measurement and numerical simulation.Based on the three-dimensional diffraction theory and the representative wave method, the regular wave simulation of the measured effective wave height is carried out, and the distribution law of the wave pressure peak along the surface of the cofferdam and the variation law with the water depth are determined.The peak value of wave dynamic pressure on cofferdam surface is analyzed and compared with the measured value.The results show that the three-dimensional diffraction theory can reasonably simulate the surface wave pressure distribution of the cofferdam, and under the influence of diffraction effect, the total wave pressure and the wave dynamic pressure show the characteristics of large wave side and small back wave side.The maximum increase of wave dynamic pressure can reach 125, the measured total pressure increases with the increase of water depth, and the peak value of wave dynamic pressure decreases with the increase of water depth.
【作者單位】： 西南交通大學橋梁工程系;中鐵大橋勘測設計院集團有限公司;
【分類號】：U445.556

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1 桂琴琴;三維物體非線性波浪壓力數(shù)值模擬[D];大連理工大學;2010年

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本文編號：1718291