Undrained pullout capacity of modified suction caisson in clay by finite element limit analysis
Undrained pullout capacity of modified suction caisson in clay by finite element limit analysis
复制标题
粘土改良吸力沉箱不排水抗拔能力有限元极限分析
DOI：
10.1080/1064119x.2017.1410869
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发表时间：
2017-12
影响因子：
2.2
通讯作者：
Zhang Yukun
中科院分区：
文献类型：
--
作者：
Li Dayong;Ma Shili;Zhang Yukun
摘要改进型吸式沉箱（MSC）在常规吸式沉箱的基础上增加了短裙边结构，以提高承载力和限制挠度。采用有限元极限分析方法，研究了抗剪强度随深度线性增加的非均质粘土中MSC的不排水拉拔能力。考虑吸土沉箱界面黏附系数α、埋深比d/l、直径比d/ d和埋深比l /l的影响，提出了隐式无量纲拉拔承载力因子。结果表明，MSC可以有效地提供较高的不排水拔出能力。随着埋置比d/l、直径比d/ d和埋置长比l /l的增大，黏附系数α增大，黏附系数α减小。从竖向静力平衡的角度出发，提出了一种计算MSC拉拔能力的理论方法。
ABSTRACT The modified suction caisson (MSC) adds a short-skirted structure around the regular suction caisson to increase the bearing capacity and limit deflection. In this study, the undrained pullout capacity of MSC in nonhomogeneous clay with shear strength increasing linearly with depth was investigated using the finite element limit analysis. An implicit dimensionless pullout bearing capacity factor was proposed by considering the effects of adhesion factor α of the soil–suction caisson interface, embedment ratio d/l, diameter ratio D/d, and embedded length ratio L/l. Results indicate that the MSC can effectively provide a higher undrained pullout capacity. The tends to increase with increasing the embedment ratio d/l, diameter ratio D/d, and embedded length ratio L/l, and to decrease with increasing the adhesion factor α of the soil–MSC interface. A theoretical method of calculating the pullout capacity of the MSC was also proposed in terms of the vertical static force equilibrium.
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影响因子：
4.3
作者：
C. Fei;J. Lian;Haijun Wang;Fang Liu;W. Hongzhen;Yue Zhao
通讯作者：
C. Fei;J. Lian;Haijun Wang;Fang Liu;W. Hongzhen;Yue Zhao
裙边吸力沉箱对饱和介质砂中单调侧向荷载的响应
影响因子：
1.6
作者：
李大勇;张雨坤;冯凌云
通讯作者：
冯凌云
影响因子：
3.6
作者：
Divya S. K. Mana;S. Gourvenec;M. Randolph
通讯作者：
Divya S. K. Mana;S. Gourvenec;M. Randolph
影响因子：
5.3
作者：
B. Ukritchon;S. Keawsawasvong
通讯作者：
B. Ukritchon;S. Keawsawasvong
单调侧向荷载作用下饱和砂土改良吸力沉箱的土压力
影响因子：
2.5
作者：
Zhang Yukun;Li Dayong;Gao Yufeng
通讯作者：
Gao Yufeng