Study on the Correlation between Soil Consolidation and Pile Set-Up Considering Pile Installation Effect

被引：5

作者：

Dou, Jinzhong ^{[1
]}

Chen, Jinjian ^{[2
]}

Liao, Chencong ^{[2
]}

Sun, Min ^{[1
]}

Han, Lei ^{[1
]}

机构：

[1] China Construct Eighth Engn Div Corp Ltd, Shanghai 200122, Peoples R China

[2] Shanghai Jiao Tong Univ, Dept Civil Engn, State Key Lab Ocean Engn, Shanghai 200240, Peoples R China

来源：

JOURNAL OF MARINE SCIENCE AND ENGINEERING | 2021年 / 9卷 / 07期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

pile jacking; consolidation effect; saturated fine-grained soil; excess pore water pressure; pile set-up; side shear resistance; hybrid Lagrangian-ALE method; EULERIAN-LAGRANGIAN APPROACH; FINITE-ELEMENT-ANALYSIS; SATURATED POROUS-MEDIA; DYNAMIC BEHAVIOR; GROUND RESPONSE; CLAY; PENETRATION; SIMULATION; PRESSURES; MODEL;

D O I：

10.3390/jmse9070705

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：

In saturated fine-grained soil, the development and dissipation of excess pore water pressure (EPWP) during and after pile jacking change the effective stress of the surrounding soil, and thereby affect the pile set-up. In this paper, the entire process of steel-pipe pile jacking (the installation process and the subsequent consolidation phase) is simulated with three-dimensional (3D) finite element models, considering the pore water effect. After the model verification, a comprehensive numerical analysis was performed to investigate the development and dissipation of EPWP, changes in soil stress state, and the side shear resistance of pile with time after installation. On this basis, not only the influence of k(s), c(u), E, and OCR on EPWP generation during pile jacking and subsequent soil consolidation effect after pile installation but also the correlation between pile set-up and EPWP dissipation is investigated.

引用

页数：23

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