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[1]张 鑫,李元松*,李昭宪,等.施工平台吸力桶基础沉贯阻力影响因素分析[J].武汉工程大学学报,2024,46(06):687-693.[doi:10.19843/j.cnki.CN42-1779/TQ.202206021]
 ZHANG Xin,LI Yuansong*,LI Zhaoxian,et al.Factors affecting the penetration resistance of suction bucket foundation of construction platform[J].Journal of Wuhan Institute of Technology,2024,46(06):687-693.[doi:10.19843/j.cnki.CN42-1779/TQ.202206021]
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施工平台吸力桶基础沉贯阻力影响因素分析
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
46
期数:
2024年06期
页码:
687-693
栏目:
资源与土木工程
出版日期:
2024-12-31

文章信息/Info

Title:
Factors affecting the penetration resistance of suction bucket foundation of construction platform
文章编号:
1674 - 2869(2024)06 - 0687 - 07
作者:
1. 武汉工程大学土木工程与建筑学院,湖北 武汉 430074;
2. 中铁大桥局集团第五工程有限公司,江西 九江 332001
Author(s):
1. School of Civil Engineering and Architecture,Wuhan Institute of Technology,Wuhan 430074,China;
2. The 5th Engineering Co.,Ltd,China Raiway Major Bridge Engineering Group Co.,Ltd,Jiujiang 332001,China
关键词:
Keywords:
分类号:
TU473;TM614
DOI:
10.19843/j.cnki.CN42-1779/TQ.202206021
文献标志码:
A
摘要:
为了探究影响导向架平台吸力桶基础沉贯阻力的因素,以广东某近海风机基础工程为背景,通过数值模拟的方法,对土体力学性质参数和桶体结构参数进行分析研究。结果表明:内摩擦角(φ)对贯入阻力影响最大,φ从16°增至28°时,总阻力值增加4 800 kN;黏聚力(c)的影响次之,c从20 kPa增至80 kPa时,总阻力值增加2 500 kN;长径比与厚径比对沉贯阻力有影响,总体上呈现出随着长径比和厚径比的增大而增大的趋势。在贯入2 m左右时,阻力值不受长径比的变化而变化。在厚径比(t/D)取值在0.006~0.036、0.042~0.048范围时,阻力值没有显著的改变。在整个贯入过程中未见连通地面的塑性贯通区,桶体在土体中沉贯是以局部剪切破坏为主,侧摩阻力在贯入中后期处于主导地位。
Abstract:
In order to investigate the factors affecting the sinking penetration resistance of the suction bucket foundation of the guided frame platform, the mechanical property parameters of the soil and the structural parameters of the bucket were analyzed and studied by numerical simulation with the background of an offshore wind turbine foundation project in Guangdong. The results show that the angle of internal friction (φ) has the most significant influence on the penetration resistance, and when its value increases from 16° to 28°, the total resistance increases by 4 800 kN; the cohesive force (c) has the second most significant influence, and when its value increases from 20 kPa to 80 kPa, the total resistance increases by 2 500 kN; the length-to-diameter ratio and the thickness-to-diameter ratio have an influence on the penetration resistance, and in general, they show a tendency to increase with the increase in the length-to-diameter ratio and thickness-to-diameter ratio. The overall pemetration resistance increases with the increase in the L/D ratio and the thickness-to-diameter ratio. At about 2 m penetration, the penetration resistance was not changed by the change of the L/D ratio. The penetration resistance did not change significantly when the thickness-to-diameter ratio (t/D) was in the range of 0.006-0.036 and 0.042-0.048. The plastic penetration zone connecting the ground was not seen during the penetration process, the barrel sinking penetration in the soil was dominated by local shear damage, and the lateral friction resistance was dominant in the middle and late stages of the penetration.

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备注/Memo

备注/Memo:
收稿日期:2022-06-14
基金项目:武汉工程大学第十三届研究生教育创新基金(CX2021131)
作者简介:张 鑫,硕士研究生。Email:[email protected]
*通信作者:李元松,博士,教授。Email:[email protected]
引文格式:张鑫,李元松,李昭宪,等. 施工平台吸力桶基础沉贯阻力影响因素分析[J]. 武汉工程大学学报,2024,46(6):687-693.
更新日期/Last Update: 2024-12-31