人工冻结黏土承载力模型试验及数值模拟分析1)

doi:10.6052/1000-0879-18-313

力学与实践 ›› 2019, Vol. 41 ›› Issue (1): 37-42.DOI: 10.6052/1000-0879-18-313

人工冻结黏土承载力模型试验及数值模拟分析¹⁾

姚兆明^2),†,*, 刘爽^*, 商玉娇^*

^*安徽理工大学土木建筑学院,安徽淮南 232001;
^†煤矿深井建设技术国家工程实验室,安徽淮南 232001;
^**济南工程职业技术学院,济南 250000

收稿日期:2018-08-13 出版日期:2019-02-20 发布日期:2019-10-31
通讯作者: ²⁾姚兆明, 教授, 主要从事岩土本构模型及数值分析研究。 E-mail: zhmyaoaust@126.com
基金资助:
¹⁾安徽省教育厅资助项目(2016jyxm0274)

MODEL TEST AND NUMERICAL SIMULATION OF BEARING CAPACITY OF ARTIFICIAL FROZEN CLAY¹⁾

YAO Zhaoming^2),†,*, LIU Shuang^*, SHANG Yujiao^**

^*School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, Anhui, China;
^†National Engineering Laboratory of Deep Well ConstructionTechnology in Coal Mine, Huainan 232001, Anhui, China;
^**Jinan Engineering Vocational Technical College, Jinan 250000, China

Received:2018-08-13 Online:2019-02-20 Published:2019-10-31

摘要/Abstract

摘要： 在天然冻土地区进行工程建设需研究冻土地基承载力。在人工冻结黏土蠕变试验的基础上建立广义开尔文模型,通过改造人工冻土大型冻结试验平台,进行人工冻结黏土地基承载力试验,发现载荷-沉降曲线可以分为3个阶段,基础呈局部剪切破坏。在ANSYS中将考虑相变的温度场转化为温度载荷施加在三维实体模型上,并将广义开尔文模型应用于软件中,采用增量加载方式分级加载。对比数值模拟与模型试验结果,发现地基载荷-沉降曲线规律一致,极限承载力大小基本相等,基础破坏模式相同。结果表明ANSYS软件可以分析复杂边界、初始条件下冻土材料的性质, 且能得到不同载荷下冻土材料的应力、位移、塑性区发展状况。

关键词: 人工冻结黏土, 模型试验, 数值模拟, 承载力, 温度场

Abstract: This paper studies the bearing capacity of the frozen soil foundation of engineering constructions in permafrost areas. Based on the creep tests of the artificial frozen clay, a generalized Kelvin model is established. The large-scale artificial frozen soil freezing test platform is used to test the bearing capacity of the artificial frozen clay. It is found that the load-settlement curve could be divided into three stages, and the foundation sees a local shear failure. For the use of the ANSYS, the temperature field with consideration of the phase transition is transformed into a temperature load and a three-dimensional solid model and a generalized Kelvin model are built, with a step loading. By comparing the numerical simulation results and the model test results, it is found that the load-settlement curve is consistent, the ultimate bearing capacity is basically the same, and the basic failure mode is the local shear failure. The results show that the ANSYS could analyze the properties of the frozen soil under complex boundary and initial conditions, and the stress and displacement of the frozen soil under different loads could be obtained

Key words: artificial frozen clay, model test, numerical simulation, bearing capacity, temperature field

中图分类号:

TU470

姚兆明, 刘爽, 商玉娇. 人工冻结黏土承载力模型试验及数值模拟分析¹⁾[J]. 力学与实践, 2019, 41(1): 37-42.

YAO Zhaoming, LIU Shuang, SHANG Yujiao. MODEL TEST AND NUMERICAL SIMULATION OF BEARING CAPACITY OF ARTIFICIAL FROZEN CLAY¹⁾[J]. Mechanics in Engineering, 2019, 41(1): 37-42.

参考文献 13

[1]	徐学祖, 王家澄, 张立新. 冻土物理学. 北京: 科学出版社, 2001Xu Xuezu, Wang Jiacheng, Zhang Lixin. Permafrost Physics.Beijing: Science Press, 2001 (in Chinese)
[2]	汪仁和, 王伟, 陈永锋. 冻土中单桩抗压承载力模型试验研究. 冰川冻土, 2002,24(5): 188--193Wang Renhe, Wang Wei, Chen Yongfeng.Model experimentalstudy on compressive bearing capacity of single pile in frozen soil.Journal of Glaciology & Geocryology, 2002, 24(5): 188-193 (in Chinese)
[3]	李栋伟, 汪仁和, 胡璞等. 冻土中锥型桩模型试验研究及有限元分析.岩土工程学报, 2006, 28(增): 1529-1533Li Dongwei, Wang Renhe, Hu Pu, etal. Model tests on cone-shaped piles in frozen soils and finite elementanalysis. Chinese Journal of Geotechnical Engineering, 2006, 28(S): 1529-1533 (in Chinese)
[4]	张军伟, 马巍, 王大雁等. 青藏高原多年冻土区钻孔灌注桩承载特性试验研究.冰川冻土, 2008, 30(3): 482-487Zhang Junwei, Ma Wei, Wang Dayan, et al.In-situ experimental study of the bearing characteristics of cast-in-placebored pile in permafrost regions of the Tibetan Plateau. Journal of Glaciology & Geocryology, 2008, 30(3): 482-487 (in Chinese)
[5]	Zhang H, Zhang JM, Zhang KQ, et al.Long-term plate load tests inpermafrost region on the Qinghai-Tibetan Plateau. Cold Regions Science and Technology, 2017, 143: 105-111
[6]	贾艳敏, 郭红雨, 郭启臣. 多年冻土区灌注桩--冻土相互作用有限元分析.岩石力学与工程学报, 2007, 26(增1): 3134-3140Jia Yanmin, Guo Hongyu, GuoQichen. Finite element analysis of bored pile-frozen soil interactions inpermafrost. Chinese Journal of Rock Mechanics & Engineering, 2007, 26(S1): 3134-3140 (in Chinese)
[7]	原喜忠, 李宁, 赵秀云等. 东北多年冻土地区地基承载力对气候变化敏感性分析. 岩土力学, 2010(10): 3265-3272Yuan Xizhong, Li Ning, Zhao Xiuyun, et al.Analysis of sensitivity of frozen ground bearing capacity to climate changein Northeast China permafrost regions. Rock and Soil Mechanics, 2010(10): 3265-3272 (in Chinese)
[8]	You YH, Wang JC, Wu QB, et al.Causes of pile foundation failure inpermafrost regions: the case study of a dry bridge of the Qinghai-TibetRailway. Engineering Geology, 2017, 230: 95-103
[9]	美启航, 于晖, 陈继. 冻土蠕变特性研究现状及展望. 灾害学, 2018, 33(增):47-56Mei Qihang, Yu Hui, Chen Ji.Research status and prospect ofpermafrost creep characteristics. Journal of Catastrophology, 2018, 33(S): 47-56 (in Chinese)
[10]	彭世龙, 荣传新, 程桦.基于广义开尔文模型的冻结壁和井壁共同作用下冻结压力解析解. 长江科学院院报,2017, 34(11): 84-88Peng Shilong, Rong Chuanxin, Cheng Hua.Analyticalsolution of freezing pressure under the interaction of freezing wall andshaft lining based on generalized Kelvin model. Journal of Yangtze River Scientific Research Institute, 2017, 34(11): 84-88 (in Chinese)
[11]	商玉娇. 人工冻土地基承载力模型试验及数值模拟分析. [硕士论文]. 淮南: 安徽理工大学, 2018Shang Yujiao.Model test and numerical simulation analysis of bearingcapacity of artificial frozen soil foundation. [Master Thesis]. Huainan: AnHui University of Scienceand Technology, 2018 (in Chinese)
[12]	中华人民共和国住房和城乡建设部.JGJ118国住房和城冻土地区建筑地基基础设计规范. 北京: 中国建筑工业出版社,2011Ministry of Housing and Urban-Rural Development of the People'sRepublic of China. JGJ118—2011 Code for design of foundations forbuildings in frozen soil areas. Beijing: China Building Industry Press, 2011 (in Chinese)
[13]	邓楚键, 孔位学, 郑颖人.极限分析有限元法讲座Ⅲ——增量加载有限元法求解地基极限承载力. 岩土力学,2005,26(3): 500-504Deng Chujian, Kong Weixue, Zheng Yingren.Analysis ofultimate bearing capacity of foundations by elastoplastic FEM through steploading. Rock and Soil Mechanics,} 2005, 26(3): 500-504 (in Chinese)

[1]	牛运玖, 叶海旺, 李宁, 王其洲, 雷涛. 基于数字图像的不同倾角节理灰岩破裂模式及细观尺度破裂过程研究¹⁾[J]. 力学与实践, 2021, 43(1): 38-45.
[2]	余勇飞, 陈沉, 斯铁冬, 胡婷, 魏家望. 野渡无人舟自横现象的数值研究[J]. 力学与实践, 2020, 42(5): 576-579.
[3]	陈亚舟, 周志强, 彭杰. 毛细管出口表面活化剂包覆液滴形成过程研究 ¹⁾[J]. 力学与实践, 2020, 42(4): 405-412.
[4]	赵鹏, 周兰花. 连铸结晶器卷渣过程的实验设计及数值模拟[J]. 力学与实践, 2020, 42(1): 56-59.
[5]	于岩斌, 芮君, 程卫民, 吴立荣. 数值实验在流体力学实验教学中的应用探讨[J]. 力学与实践, 2019, 41(5): 615-619.
[6]	朱晓军,李锋,欧东斌,陈连忠,周凯. 疏导式热防护在翼前缘中的应用探索[J]. 力学与实践, 2019, 41(4): 388-392.
[7]	王亮, 薛锐, 蔡宁, 上官剑锋, 刘明会, 周欣. 一种新的工程流体力学课程教学方法探讨¹⁾[J]. 力学与实践, 2019, 41(2): 216-221.
[8]	冯永, 张盼盼, 原子然, 刘杰. 循环载荷下淤泥轻量土的细观变形机理研究¹⁾[J]. 力学与实践, 2019, 41(1): 23-29.
[9]	刘虎, 刘永志, 代坤, 郭战虎, 刘春太. 柔性力敏导电高分子复合材料应用研究进展¹⁾[J]. 力学与实践, 2018, 40(5): 481-494.
[10]	钱璟, 黄冠江, 张莹雪. 离散梯度法在基于图像的计算生物力学中的应用¹⁾[J]. 力学与实践, 2018, 40(3): 300-307.
[11]	董家宁, 张洪军, 杨阳. 穿孔壁面通道流动阻力特性研究[J]. 力学与实践, 2018, 40(3): 267-272.
[12]	李宝宽, 荣文杰, 刘中秋, 李林敏. 在工程流体力学教学中引入CFD工程案例的探讨[J]. 力学与实践, 2018, 40(1): 93-95.
[13]	谢翠丽, 倪玲英. 计算流体力学在工程流体力学课程中的应用与实践[J]. 力学与实践, 2017, 39(5): 503-505,495.
[14]	张烈辉, 贾鸣, 郭晶晶. 基于REV尺度格子Boltzmann方法的页岩气流动数值模拟[J]. 力学与实践, 2017, 39(2): 130-134.
[15]	李鹏, 苏建政, 张岩, 张旭辉, 鲁晓兵. 单裂缝中携砂液流动规律研究[J]. 力学与实践, 2017, 39(2): 135-144.

人工冻结黏土承载力模型试验及数值模拟分析¹⁾

MODEL TEST AND NUMERICAL SIMULATION OF BEARING CAPACITY OF ARTIFICIAL FROZEN CLAY¹⁾

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献 13

相关文章 15

编辑推荐

Metrics

本文评价