【摘要】：吸力貫入式板錨(SEPLA)是一種系泊深海浮式結(jié)構(gòu)的新型基礎(chǔ),在轉(zhuǎn)動上拔的過程中其埋深和承載力會不斷減小。采用包絡(luò)面塑性極限分析方法,對吸力貫入式板錨在其轉(zhuǎn)動上拔的過程中的埋深損失和承載力進(jìn)行了模擬分析,并考慮錨鏈、土和板錨的相互作用。研究了切向偏心、錨鏈泥線夾角等參數(shù)對埋深損失、板錨轉(zhuǎn)角、承載力的影響,并與離心機(jī)模型試驗(yàn)數(shù)據(jù)驗(yàn)證。研究結(jié)果表明,隨著錨眼切向偏心的增大,板錨埋深損失逐漸減小,甚至出現(xiàn)埋深增大的現(xiàn)象,但相應(yīng)的承載力顯著降低。當(dāng)偏心比ep/en0.1時(shí),板錨的承載力基本不變;當(dāng)ep/en0.1后,板錨的承載力隨ep/en增大而減小。泥線處錨鏈傾角越小時(shí),板錨的轉(zhuǎn)動角度越小,獲得的承載力效果越好。
[Abstract]:The suction penetration plate anchor (SEPLA) is a new foundation of mooring deep sea floating structure, and its burying depth and bearing capacity will decrease in the course of turning and pulling. By using the envelope plastic limit analysis method, the buried depth loss and the bearing capacity of the suction penetration plate anchor during its rotation are simulated and analyzed, and the interaction of the anchor chain, soil and the plate anchor is considered. The effects of tangential eccentricity and the angle between anchor and mud line on the loss of buried depth, the rotation angle of plate anchor and the bearing capacity are studied, and the results are verified by the centrifuge model test data. The results show that with the increase of the tangential eccentricity of the anchor hole, the loss of the buried depth of the plate anchor decreases gradually, and even increases, but the corresponding bearing capacity decreases significantly. When the eccentricity ratio is ep/en0.1, the bearing capacity of the plate anchor is basically unchanged, and the bearing capacity of the plate anchor decreases with the increase of ep/en after ep/en0.1. The smaller the inclined angle of anchor chain is, the smaller the rotation angle of plate anchor is, and the better the bearing capacity is.
【作者單位】： 中國石油大學(xué)(華東)船舶與海洋工程系;
【基金】：國家自然科學(xué)基金項(xiàng)目(51179201) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(15CX05040A)
【分類號】：P751;TU476

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本文編號：2142046