Effect of loading rate on the pullout capacity of offshore bucket foundations in sand

Vicent Ssenyondo; Kim Sung-Ryul; Do Van Tung; Bong Taeho

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Effect of loading rate on the pullout capacity of offshore bucket foundations in sand

机译：装载率对沙滩上海上桶基础拉出容量的影响

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A series of 1 g model tests was performed to investigate the effect of loading rate on the vertical pullout capacity of offshore bucket foundations in sand. The bucket model had a length-to-diameter ratio of 1.0. Loading rates varied from 0.004 N/s to 2.05 N/s. The pullout load increased with bucket displacement and loading rate. The loading rate of 0.004 N/s induced drained conditions with negligible suction pressure and high skin resistance. Increasing the loading rate induced high suction pressures inside the bucket. The bucket pullout capacity increased with bucket displacement and loading rate. Suction pressure increased with bucket displacement and loading rate and contributed considerably to the pullout capacity. The bucket resistance to pullout load increased with the increase in loading rate. Equations were proposed to evaluate the drained and undrained pullout capacities of the bucket.

机译：进行了一系列1 G型试验，以研究装载率对沙子垂直铲斗基础垂直拉出能力的影响。铲斗模型的长度直径比为1.0。加载率从0.004 n / s变化至2.05 n / s。拉伸负荷随着铲斗位移和装载速率而增加。装载速率为0.004n / s诱导的排水条件，吸入压力可忽略不计，耐肤色。增加装载速率在铲斗内引起高吸力。铲斗拉出容量随铲斗位移和装载速率而增加。吸入压力随着铲斗位移和装载速率而增加，并大大贡献到拉出能力。随着装载速率的增加，桶抗拔出量的抵抗力增加。建议评估铲斗的排水和不介绍的拉出能力方程。

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来源
《Ocean Engineering》 |2020年第15期|107427.1-107427.9|共9页
作者
Vicent Ssenyondo; Kim Sung-Ryul; Do Van Tung; Bong Taeho;
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作者单位

Dong A Univ Dept Civil Engn Hadan2 Dong Busan South Korea;

Seoul Natl Univ Dept Civil & Environm Engn 1 Gwanak Ro Seoul South Korea;

Seoul Natl Univ Dept Civil & Environm Engn 1 Gwanak Ro Seoul South Korea;

Gyeonggi Res Inst Ecol & Environm Res Div 1150 Gyeongsu Daero Suwon South Korea;

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原文格式 PDF
正文语种 eng
中图分类
关键词
Bucket foundation; Pullout capacity; Drainage condition; Loading rate; 1 g model tests;

机译：铲斗基础;拉出能力;排水条件;装载率;1 G型试验;

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Effect of loading rate on the pullout capacity of offshore bucket foundations in sand

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