The effect of spudcan footprints on the vertical bearing capacity of adjacent pile foundations

被引：4

作者：

Liang, Chao ^{[1
]}

Liu, Run ^{[1
]}

Zhang, Haiyang ^{[1
]}

Li, Chengfeng ^{[1
]}

Yuan, Yu ^{[1
]}

Cao, Tianming ^{[1
]}

机构：

[1] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin, Peoples R China

来源：

SHIPS AND OFFSHORE STRUCTURES | 2021年 / 16卷 / 03期

关键词：

Spudcan footprints; footprint unloading; vertical bearing capacity; footprint area; affected area; JACK-UP; REINSTALLATION; PENETRATION; BEHAVIOR;

D O I：

10.1080/17445302.2020.1725278

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

It is well recognised that footprints are formed during the spudcan insertion process, which can have a negative impact on adjacent pile foundations.This research presents a simplified three-dimensional finite element model to analyse the effect of footprints on the vertical bearing capacity of adjacent piles in clay. The soil parameters around the footprint were obtained via a comparative analysis of the results yielded by the hole-edge stress theory, a triaxial unloading shear test and an unloading state model test. Based on the simplified three-dimensional finite element model, the skin friction resistance changes of piles under different footprint depths, footprint diameters, and dimensionless distances L/D were calculated. The results showed that the reduction rate of the skin friction resistance of the pile decreases with increasing L/D and increases with increasing footprint diameter and footprint depth. .

引用

页码：292 / 305

页数：14

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