[1]戴国亮,朱文波,袁龙锦,等.吸力式沉箱基础考虑土体流变效应的p-y曲线法[J].东南大学学报(自然科学版),2017,47(4):806-811.[doi:10.3969/j.issn.1001-0505.2017.04.027]
　Dai Guoliang,Zhu Wenbo,Yuan Longjing,et al.A p-y curve method for suction caisson foundation considering soil rheological effect[J].Journal of Southeast University (Natural Science Edition),2017,47(4):806-811.[doi:10.3969/j.issn.1001-0505.2017.04.027]
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吸力式沉箱基础考虑土体流变效应的p-y曲线法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第4期
页码:
806-811
栏目:
土木工程
出版日期:
2017-07-20

文章信息/Info

Title:
A p-y curve method for suction caisson foundation considering soil rheological effect
作者:
戴国亮1; 2; 朱文波1; 袁龙锦1; 龚维明1; 2; 赵学亮1; 2
1东南大学土木工程学院, 南京 210096; 2 东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096
Author(s):
Dai Guoliang1; 2;  Zhu Wenbo1;  Yuan Longjing1;  Gong Weiming1; 2;  Zhao Xueliang1; 2
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
吸力式沉箱基础;  流变效应;  p-y曲线;  模型试验
Keywords:
suction caisson foundation;  creep effect;  p-y curve;  model experiment
分类号:
TU473
DOI:
10.3969/j.issn.1001-0505.2017.04.027
摘要:
为了考虑土体流变效应对吸力式沉箱基础承载特性的影响,通过建立理想弹塑性p-y曲线法中土抗力系数与时间变量之间的关系,提出了一种考虑土体流变效应的吸力式沉箱基础长期性能分析方法.基于2组不同水平荷载作用下的长期模型试验,采用Matlab拟合土体参数试验数据,获得关于时间变量的理想弹塑性p-y曲线模型,并采用该方法对模型试验结果进行分析.结果表明:在长期模型试验中位移与土压力发展主要集中在试验前期,后期位移与土压力稳定需要更长时间,土体流变效应较为明显.理论计算值与实测值随时间变化规律类似,理论计算结果与试验结果相差8%左右,说明长期水平荷载下考虑时间因素的p-y曲线计算结果能较好地吻合试验值.
Abstract:
To consider the soil rheological effects on bearing characteristics of the suction caisson foundation, a long-term performance analysis method for considering the soil rheological effect of the suction caisson foundation is proposed by establishing the relationship between soil resistance coefficients and time variable of the ideal elastic-plastic p-y curve method. Based on two sets of different long-term horizontal load model tests, the ideal elastic-plastic p-y curve model about time variable is obtained by using Matlab to fit the experimental data of soil parameters. Then, the proposed method is used to analyze the results of the model test. Analysis results show that in the long-term model test, the development of displacement and soil pressure are mainly concentrated in the early stage of the experiment; the later displacement and the soil pressure stabilization need longer time, and the soil rheological effect is obvious. The theoretically calculated values and the measured values are similar with the change of time, and the difference between them is about 8%, which show that the calculated results by this method can fit well with the experimental values.

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相似文献/References:

[1]黎冰,等.砂土中吸力式沉箱基础的最大承载力计算方法[J].东南大学学报(自然科学版),2012,42(6):1201.[doi:10.3969/j.issn.1001-0505.2012.06.032]
　Li Bing,Gao Yufeng,et al.Calculation method for maximum bearing capacity of suction caisson foundation in sand[J].Journal of Southeast University (Natural Science Edition),2012,42(4):1201.[doi:10.3969/j.issn.1001-0505.2012.06.032]

备注/Memo

备注/Memo:
收稿日期: 2016-12-14.
作者简介: 戴国亮(1975—),男,博士,教授,博士生导师,daigl@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2013CB036300)、浙江省交通运输厅科研计划资助项目(2014H10).
引用本文: 戴国亮,朱文波,袁龙锦,等.吸力式沉箱基础考虑土体流变效应的p-y曲线法[J].东南大学学报(自然科学版),2017,47(4):806-811. DOI:10.3969/j.issn.1001-0505.2017.04.027.
更新日期/Last Update: 2017-07-20