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为研究波浪作用下沉管管段沉放过程的运动特性,开展了实验室沉管沉放的试验研究,量测了沉管管段的运动响应及沉放系统的缆绳受力,分析了管段运动位移和缆绳受力随相对波高H/h、相对宽度b/λ和相对沉深d/h的变化规律.结果表明:较小管段沉深情况下,管段的运动表现出强非线性特征;管段的运动响应随b/λ和d/h的增加而很快减小.管段沉深较小时,波高对管段的无量纲运动位移的影响较明显;迎浪侧的缆绳最大张力稍大于背浪侧的缆绳最大张力.较小的管段沉深情形下,两侧的缆绳张力相位差较明显;缆绳张力随b/λ的减小而增大,随H/h的减小和d/h的增大而减小.
In order to study the movement characteristics of the sinking pipe during the wave action, the experimental study on the sinking of the pipe in the laboratory was carried out. The movement response of the sinking pipe and the cable force of the sinking system were measured. And the variation of cable force with relative wave height H / h, relative width b / λ and relative depth d / h were studied.The results show that the motion of the pipe section shows a strong non-linear characteristic when the pipe section is deep, The motion response decreases rapidly with the increase of b / λ and d / h.When the depth of pipe is small, the influence of wave height on the dimensionless motion displacement of the pipe is obvious, and the maximum tension of the cable on the wave front is slightly larger than that on the wave front The maximum tension of the cable is smaller in the case of smaller pipe section, the phase difference of the cable tension on both sides is more obvious. The cable tension increases with the decrease of b / λ. With the decrease of H / h and the increase of d / h And reduce.