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防沉板基础是水下生产系统结构物的支撑基础。为探究防沉板基础布置裙板对其承载性能的影响，该文通过有限元方法研究了裙板数量N、裙板相对高度d/B和土体归一化强度kB/Su0对防沉板基础单向和复合承载力的影响。结果表明：裙板相对高度d/B和土体归一化强度kB/Su0对防沉板基础承载力的影响显著大于裙板数量N。在防沉板基础受到耦合荷载时，随着竖向荷载V的增大，水平承载力H和弯矩M会逐渐降低，随着d/B和kB/Su0的增加，防沉板基础在V-H和V-M荷载空间的承载力包络线逐渐扩大，但归一化后的承载力包络线在不同条件下基本保持一致。
Abstract：The mudmat foundation serve as the supporting bases for underwater production system structures. To investigate the influence of bearing characteristics of skirts on the mudmat foundation, the finite element method is employed to study the effects of skirt quantity N, relative skirt height d/B, and normalized soil strength kB/Su0 on both unidirectional and combined bearing capacities of mudmat foundation. The results show that the influence of relative skirt height d/B and normalized soil strength kB/Su0 on the bearing capacity of the mudmat foundation is significantly greater than that of skirt quantity N. When the mudmat foundation is subjected to coupled loads, as the vertical load V increases, the horizontal bearing capacity H and bending moment capacity M gradually decrease. With the rise of d/B and kB/Su0, the bearing capacity envelopes of the mudmat foundation in the V-H and V-M load spaces gradually expands. However, the normalized bearing capacity envelopes remain nearly consistent under different conditions.
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基本信息:
DOI：
中图分类号:TE5;P75;TU475
引用信息:
[1]罗晓健,屈衡,岳琦,等.裙板对防沉板基础承载特性的研究[J].勘察科学技术,2025,No.262(03):12-19.
基金信息:
国家重点研发计划项目(2022YFB2603000)