本文選題：水下生產(chǎn)系統(tǒng) + 防沉板基礎(chǔ)　； 參考：《水利學(xué)報》2015年S1期

【摘要】：防沉板基礎(chǔ)是深海油氣資源開發(fā)中常用基礎(chǔ)形式,其承受的荷載具有復(fù)雜性、非線性和不確定性,給防沉板基礎(chǔ)的穩(wěn)定性研究帶來了巨大挑戰(zhàn)�；跅l形基礎(chǔ)的承載特性提出了新型復(fù)合條形防沉板基礎(chǔ)的結(jié)構(gòu)形式,通過優(yōu)化基礎(chǔ)條數(shù)量n、寬度B和間距l(xiāng)可實現(xiàn)復(fù)合條形基礎(chǔ)承載效率系數(shù)的最大化。結(jié)合工程設(shè)計實例,開展了該新型結(jié)構(gòu)基礎(chǔ)與傳統(tǒng)矩形防沉板基礎(chǔ)的對比設(shè)計。研究表明,在基礎(chǔ)底面積相同的情況下,復(fù)合條形基礎(chǔ)的豎直向極限承載力與矩形防沉板基礎(chǔ)相比提高10%~20%。當(dāng)復(fù)合條形基礎(chǔ)的基礎(chǔ)條寬度B一定時,地基豎直向極限承載力隨著l/B的增加先增大后減小,最后趨于穩(wěn)定。對不同的基礎(chǔ)條寬度B,地基豎直向極限承載力均在l/B=0.2時達(dá)到最大值,且隨著基礎(chǔ)條數(shù)量n的增大而增大。
[Abstract]:Mudmat foundation is the development of deep-sea oil and gas resources in the common form of foundation, the load has the complexity, nonlinearity and uncertainty, which brings a great challenge to research on the stability of mudmat foundation. The bearing characteristics of strip foundation based on composite strip structure based anti sinking plate is proposed. By optimizing the number of N, the maximum width of the B and l based composite bar spacing load efficiency coefficient. Combined with the example of engineering design, carried out with the traditional rectangle of the new structure based anti contrast sink design board foundation. The results show that in the base area under the same vertical composite foundation and the ultimate bearing capacity of rectangular mudmat foundation improvement compared to 10%~20%. when the composite strip foundation foundation width B, the vertical ultimate bearing capacity of the foundation with the increase of l/B increases first and then decreases, finally tends to be stable For different base strip width B, the vertical ultimate bearing capacity of the foundation reaches the maximum at l/B=0.2, and increases with the increase of the number of base strips of n.

【作者單位】： 水利工程仿真與安全國家重點實驗室天津大學(xué);港口巖土工程技術(shù)交通行業(yè)重點實驗室;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(973計劃)(2014CB046800) 國家自然科學(xué)基金優(yōu)秀青年基金(51322904) 天津市自然科學(xué)基金面上項目(12JCYBJC4700)
【分類號】：TU476
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本文編號：1761954