[1]代加林,张炜,罗仑博,等.考虑土应变软化和率效应的桶形基础上拔模拟[J].深圳大学学报理工版,2023,40(1):83-91.[doi:10.3724/SP.J.1249.2023.01083]
　DAI Jialin,ZHANG Wei,LUO Lunbo,et al.Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay[J].Journal of Shenzhen University Science and Engineering,2023,40(1):83-91.[doi:10.3724/SP.J.1249.2023.01083]
点击复制

考虑土应变软化和率效应的桶形基础上拔模拟()
分享到：

《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第40卷
期数:
2023年第1期
页码:
83-91
栏目:
土木建筑工程
出版日期:
2023-01-06

文章信息/Info

Title:
Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay
文章编号:
202301010
作者:
代加林; 张炜; 罗仑博; 李洲; 于光明
中国长江三峡集团有限公司，北京 100038
Author(s):
DAI Jialin;  ZHANG Wei;  LUO Lunbo;  LI Zhou;  and YU Guangming
China Three Gorges Group Co.Ltd., Beijing 100038, P.R.China
关键词:
岩土工程; 软黏土; 桶形基础; 应变软化; 率效应; 上拔荷载; 群桶效应
Keywords:
geotechnical engineering;  soft clay;  suction caisson foundation;  strain softening;  rate effect;  uplift load;  caisson groups effect
分类号:
TU48
DOI:
10.3724/SP.J.1249.2023.01083
文献标志码:
A
摘要:
研究桶形基础上拔承载特性对海上张力腿油气平台和多腿风机等构筑物安全服役性能具有重要意义. 基于ABAQUS二次开发，建立考虑软黏土应变软化和率效应的桶形基础上拔数值分析模型，并将上拔数值模拟结果和理论值、试验值进行对比，验证了数值模型的有效性. 模拟分析发现，软黏土应变软化参数对桶形基础上拔峰值荷载的影响在5%以内，而率效应对上拔荷载影响明显，率效应参数变化引起的上拔峰值荷载差异达40%以上；上拔峰值荷载随桶外壁粗糙度线性增加，桶外壁粗糙度引起的应变软化和率效应变化对上拔荷载影响可以忽略；对于群桶基础，桶间距越小，极限承载力群桶效应越明显，承载力降低最多可达10%，桶间距超过1.5倍桶径后，群桶效应可以忽略.
Abstract:
It is of great significance to study the uplift bearing characteristics of suction caisson foundations for the safe service performance of offshore tension leg platform (TLP) and multi-leg wind turbine. Based on the secondary development of ABAQUS, a numerical model of suction caisson foundations considering strain softening and rate effect of soft clay is established. The numerical results are compared with the theoretical and experimental results to verify the reliability of the numerical model. The simulation results show that the change of soft clay strain softening parameters has less than five percent influence on the peak of uplift load, while the rate effect has obvious influence on the peak of uplift load and the difference caused by the change of rate effect parameters is more than forty percent. The peak of uplift load increases linearly withthe caisson outer wall roughness, and the effect of strain softening and rate effect on the uplift load caused by the caisson outer wall roughness can be ignored. For the caisson groups foundation, the caisson group effect becomes obvious with the decrease of caisson spacing, and the bearing capacity can be reduced by up to ten percent. When the caissons spacing is more than one and a half times of the caisson diameter, the caisson groups effect can be ignored.

参考文献/References:

［1］ 施晓春，徐日庆，龚晓南，等. 桶形基础发展概况［J］. 土木工程学报，2000，33（4）：68-92.
SHI Xiaochun, XU Riqing, GONG Xiaonan, et al. Development of bucket foundation [J]. China Civil Engineering Journal, 2000, 33(4): 68-92.(in Chinese)
［2］ 施晓春，徐日庆，俞建霖，等. 桶形基础简介及试验研究［J］. 杭州应用工程技术学院学报，2000，12（增刊1）：39-42.
SHI Xiaochun, XU Riqing, YU Jianlin, et al. Bucket foundation and experimental investigation [J]. Journal of Hangzhou Institute of Applied Engineering, 2000, 12(Suppl.1): 39-42.(in Chinese)
［3］ HOULSBY G T, KELLY R B, HUXTABLE J, et al. Field trials of suction caissons in clay for offshore wind turbine foundations [J]. Géotechnique, 2005, 55(4): 287-296.
［4］ 施晓春，龚晓南，徐日庆. 水平荷载作用下桶形基础性状的数值分析［J］. 中国公路学报，2002，15（4）：49-52.
SHI Xiaochun, GONG Xiaonan, XU Riqing. Numerical analysis of properties of bucket foundation under horizontal forces [J]. China Journal of Highway and Transport,2002, 15(4): 49-52.(in Chinese)
［5］ 张宇，王梅，楼志刚. 竖向载荷作用下桶形基础与土相互作用机理研究［J］. 土木工程学报，2005，38（2）：97-101.
ZHANG Yu, WANG Mei, LOU Zhigang. A study on the mechanism of interaction between bucket foundation and soil under vertical loadings [J]. China Civil Engineering Journal, 2005, 38(2): 97-101.(in Chinese)
［6］ 孙曦源，栾茂田，唐小微. 饱和软黏土地基中桶形基础水平承载力研究［J］. 岩土力学，2010，31（2）： 667-672.
SUN Xiyuan, LUAN Maotian, TANG Xiaowei. Study of horizontal bearing capacity of bucket foundation on saturated soft clay ground [J]. Rock and Soil Mechanics, 2010, 31(2): 667-672.(in Chinese)
［7］ 罗强，栾茂田，杨蕴明. 非共轴本构模型在吸力桶地基承载力有限元分析中应用［J］. 海洋工程，2012，30（2）： 87-94.
LUO Qiang, LUAN Maotian, YANG Yunming. Application of a non-coaxial constitutive model in the FEM analysis of the suction buckets bearing capacity [J]. The Ocean Engineering, 2012, 30(2): 87-94.(in Chinese)
［8］ 闫澍旺，林澍，霍知亮，等. 桶形基础液压下沉过程的耦合欧拉-拉格朗日有限元法分析［J］. 岩土力学，2017，38（1）：247-252.
YAN Shuwang, LIN Shu, HUO Zhiliang, et al. Coupled Eulerian-Lagrangian finite element analysis of suction caisson penetration processes under hydraulic pressure [J]. Rock and Soil Mechanics, 2017, 38(1): 247-252.(in Chinese)
［9］ ZDRAVKOVIC L, POTTS D M, JARDINE R J. A parametric study of the pull-out capacity of bucket foundations in soft clay [J]. Géotechnique, 2001, 51(1): 55-67.
［10］ DAY R A, POTTS D M. Zero thickness interface elements-numerical stability and application [J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1994, 18(10): 689-708.
［11］ MANA D S K, GOURVENEC S, RANDOLPH M F. Numerical modelling of seepage beneath skirted foundations subjected to vertical uplift [J]. Computers and Geotechnics, 2014, 55(1): 150-157.
［12］ 武科，薛洪福，陈榕，等. 吸力式桶形基础多桶组合结构承载力特性研究［J］. 防灾减灾工程学报，2008（4）：90-97.
WU Ke, XUE Hongfu, CHEN Rong, et al. Studies on bearing capacity of composite multi-bucket structure of suctional bucket foundation [J]. Journal of Disaster Prevention and Mitigation Engineering, 2008(4): 90-97.(in Chinese)
［13］ 刘树杰，王忠涛，栾茂田. 单向荷载作用下海上风机多桶基础承载特性数值分析［J］. 海洋工程，2010，28（1）：31-35.
LIU Shujie, WANG Zhongtao, LUAN Maotian. Numerical analysis of bearing capacity behavior of multi-bucket suctional foundation for offshore wind turbine under monotonic loading [J]. Ocean Engineering, 2010, 28(1): 31-35.(in Chinese)
［14］ GOURVENEC S, JENSEN K. Effect of embedment and spacing of conjoined skirted foundation systems on undrained limit states under general loading [J]. International Journal of Geomechanics, 2009, 9(6): 267-279.
［15］ KIM S R, HUNG L C, OH M. Group effect on bearing capacities of tripod bucket foundations in undrained clay [J]. Ocean Engineering, 2014, 79: 1-9.
［16］ 肖忠，王琰，王元战，等. 桶间距对四桶吸力式基础各单向承载力的影响及最优间距的确定［J］. 岩土力学，2018，39（10）：3603-3611 .
XIAO Zhong, WANG Yan, WANG Yuanzhan, et al. Effect of bucket separation distance on bearing capacity of tetrapod bucket foundations and determination of optimal separation distance [J]. Rock and Soil Mechanics, 2018, 39(10): 3603-3611.(in Chinese)
［17］ EINAV I, RANDOLPH M F. Combining upper bound and strain path methods for evaluating penetration resistance [J]. International Journal for Numerical Methods in Engineering, 2005, 64(14): 1991-2016.
［18］ Randolph M F. Characterization of soft sediments for offshore applications [C]// Proceeding of ISC-2 on Geotechnical and Geophysical Site Characterization, USA. Rotterdam: Millpress, 2004: 209-232.
［19］ BISCONTIN G, PESTANA J M. Influence of peripheral velocity on vane shear strength of an artificial clay [J]. Geotechnical Testing Journal, 2001, 24(4): 423-429.
［20］ LUNNE T, ANDERSEN K H. Soft clay shear strength parameters for deepwater geotechnical design [C]// Offshore Site Investigation and Geotechnics:Confronting New Challenges and Sharing Knowledge. London: OnePetro, 2007: 151-176.
［21］ ERBRICH C T. Australian frontiers-spudcans on the edge [C]// Proceeding of of 1st Int Symp on Frontiers in Offshore Geotechnics. London(UK): Taylor & Francis Group, 2005: 49-74.
［22］ ZHU B, DAI J L, KONG D Q, et al. Centrifuge modelling of uplift response of suction caisson groups in soft clay [J]. Canadian Geotechnical Journal, 2020, 57(9): 1294-1303.
［23］ 代加林. 软黏土中吸力式桶形基础上拔离心模型试验与数值分析［D］. 杭州： 浙江大学，2020.
DAI Jialin. Centrifugal and numerical study on uplift behaviour of sucation caissons in soft clay [D]. Hangzhou:Zhejiang University, 2020.(in Chinese)

相似文献/References:

[1]郭彪,韩颖,龚晓南,等.考虑横竖向渗流的砂井地基非线性固结分析[J].深圳大学学报理工版,2010,27(4):459.
　GUO Biao,HAN Ying,GONG Xiao-nan,et al.Nonlinear consolidation behavior of sand foundation with both horizontal and vertical drainage[J].Journal of Shenzhen University Science and Engineering,2010,27(1):459.
[2]苏栋,袁胜强,李锦辉.水平单向及多向载荷下单桩响应的数值研究[J].深圳大学学报理工版,2011,28(No.5(377-470)):389.
　SU Dong,YUAN Sheng-qiang,and LI Jin-hui.Numerical study on response of a single pile under unidirectional and multidirectional horizontal loadings[J].Journal of Shenzhen University Science and Engineering,2011,28(1):389.
[3]张永兴,陈林.地震作用下挡土墙主动土压力分布[J].深圳大学学报理工版,2012,29(No.1(001-094)):31.[doi:10.3724/SP.J.1249.2012.01031]
　ZHANG Yong-xing and CHEN Lin.Seismic active earth pressure of retaining wall[J].Journal of Shenzhen University Science and Engineering,2012,29(1):31.[doi:10.3724/SP.J.1249.2012.01031]
[4]刘顺青,洪宝宁,方庆军,等.高液限土和红黏土的水敏感性研究[J].深圳大学学报理工版,2013,30(No.1(001-110)):78.[doi:10.3724/SP.J.1249.2013.01078]
　Liu Shunqing,Hong Baoning,et al.Study on the water sensitivity of high liquid limit soil and red clay[J].Journal of Shenzhen University Science and Engineering,2013,30(1):78.[doi:10.3724/SP.J.1249.2013.01078]
[5]李凡,李雪峰.两条雁行预制裂隙贯通机制的细观数值模拟[J].深圳大学学报理工版,2013,30(No.2(111-220)):190.[doi:10.3724/SP.J.1249.2013.02190]
　Li Fan and Li Xuefeng.Micro-numerical simulation on mechanism of fracture coalescence between two pre-existing flaws arranged in echelon[J].Journal of Shenzhen University Science and Engineering,2013,30(1):190.[doi:10.3724/SP.J.1249.2013.02190]
[6]王杏杏,潘林,高凌霞,等.黄土微结构的谱系聚类分析[J].深圳大学学报理工版,2016,33(4):394.[doi:10.3724/SP.J.1249.2016.04394]
　Wang Xingxing,Pan Lin,Gao Lingxia,et al.Pedigree clustering analysis of the microstructure of loess[J].Journal of Shenzhen University Science and Engineering,2016,33(1):394.[doi:10.3724/SP.J.1249.2016.04394]
[7]杨果林,龚铖,黄玮.GFRP桩在泥炭质土中静压挤土的效应试验[J].深圳大学学报理工版,2016,33(5):484.[doi:10.3724/SP.J.1249.2016.05484]
　Yang Guolin,Gong Cheng,and Huang Wei.Experiments of soil compacting effect of GFRP pile in peaty soil[J].Journal of Shenzhen University Science and Engineering,2016,33(1):484.[doi:10.3724/SP.J.1249.2016.05484]
[8]林署炯,冉孟胶,陈剑尚,等.填埋固化污泥土的压缩过程及微结构变化[J].深圳大学学报理工版,2017,34(2):147.
　Lin Shujiong,Ran Mengjiao,Chen Jianshang,et al. Compression process of the landfilled solidified sludge soil and its microstructure changes[J].Journal of Shenzhen University Science and Engineering,2017,34(1):147.
[9]陈之祥,李顺群,夏锦红,等.基于紧密排列土柱模型的冻土热参数计算[J].深圳大学学报理工版,2017,34(4):393.[doi:10.3724/SP.J.1249.2017.04393]
　Chen Zhixiang,Li Shunqun,Xia Jinhong,et al.Calculation of thermal parameters of frozen soil based on the closely spaced soil column model[J].Journal of Shenzhen University Science and Engineering,2017,34(1):393.[doi:10.3724/SP.J.1249.2017.04393]
[10]肖成志,李晓峰,张静娟.压实度和含水率对含砂粉土性质的影响[J].深圳大学学报理工版,2017,34(5):501.[doi:10.3724/SP.J.1249.2017.05501]
　Xiao Chengzhi,Li Xiaofeng,and Zhang Jingjuan.Effect of compaction degree and water content on performance of sandy silt[J].Journal of Shenzhen University Science and Engineering,2017,34(1):501.[doi:10.3724/SP.J.1249.2017.05501]
[11]黄赵星,孙红,葛修润.固结条件下软黏土孔隙的演化特征分析[J].深圳大学学报理工版,2020,37(6):576.[doi:10.3724/SP.J.1249.2020.06576]
　HUANG Zhaoxing,SUN Hong,and GE Xiurun.Evolution of soft clay pores under consolidation[J].Journal of Shenzhen University Science and Engineering,2020,37(1):576.[doi:10.3724/SP.J.1249.2020.06576]

备注/Memo

备注/Memo:
Received: 2021-11-29; Accepted: 2021-12-10; Online (CNKI): 2022-11-30
Foundation: Major Science and Technology Projects of Zhejiang Electric Power Company (ZB12-043b-020); Scientific Research Fund of China Three Gorges Group Co. Ltd. (WWKY-2020-0721)
Corresponding author: Senior engineer ZHANG Wei.E-mail: zhang_wei44@ctg.com.cn
Citation: DAI Jialin, ZHANG Wei, LUO Lunbo, et al. Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay [J]. Journal of Shenzhen University Science and Engineering, 2023, 40(1): 83-91.(in Chinese)
基金项目：浙江省电力公司重大科技资助项目（ZB12-043B-020）；中国长江三峡集团有限公司科研基金资助项目（WWKY-2020-0721）
作者简介：代加林（1991—），中国长江三峡集团有限公司工程师．研究方向：海洋岩土工程. E-mail: dai_jialin@ctg.com.cn
引 文：引用格式:代加林，张炜，罗仑博，等.考虑土应变软化和率效应的桶形基础上拔模拟［J］.深圳大学学报理工版，2023，40（1）：83-91.
更新日期/Last Update: 2023-01-30