FEM analysis of nonlinear mechanical behavior of fluid-solid coupling for soft clay foundation
-
摘要: 软黏土存在黏滞和固结作用的时效性,同时还存在水分作用的耦合效应。为研究水分含量对软黏土地基效应的影响,根据多孔介质理论结合罚参数法和Galerkin加权残值法,在多孔介质中引入了弹黏塑性力学效应,推导了软黏土地基的固液两相多孔介质模型和控制场方程,建立了有限元计算模型,给出了求解算法并编制了有限元程序。算例对比分析表明,该程序能够有效模拟软黏性土地基的力学响应。Abstract: Soft clay is influenced by the time-dependence of viscosity and consolidation as well as coupling effect of moisture. In order to study the effect of moisture content on soft clay foundation, by introducing the elastic-viscoplastic mechanics effects into porous media, the model for solid-liquid two-phase porous media and the governing equations for soft clay foundation are deduced, and the finite element model and program are established based on the theory of porous media, the penalty function parameter method and the Galerkin weighted residual method. Compared with the theoretical results and the observed data, it is indicated that the proposed model and procedure are suitable for simulating the mechanical behaviors of soft clay foundation.
-
[1] HANSBO S. Consolidation of fine grained soil by prefabricated drains[C]// Proc of 10th ICSMFE (Vol 3). 1981: 677-682. [2] ZENG G X, XIE K H. New development of the vertical drains theories[C]// Proc of 12th ICSMFE (Vol 2). 1989: 1435-1438. [3] BOWEN R M. Compressible porous media by use of the theory of mixtures[J]. J Int J Engng Sci, 1982, 20: 19-45. [4] 王勖成. 有限单元法基本原理和数值方法[M]. 北京: 清华大学出版社, 1997: 167-190. (WANG Mao-Cheng. The finite element method base theory and Numerical methods[M]. Beijing: Tsinghua University Press, 1997: 167-190. (in Chinese)) [5] BIOT M A. General theory of three-dimensional consolidation[J]. J Appl Phys ,1941, 12 :155-164. [6] BIOT M A. Theory of propagation of elastic waves in a fluid-saturated porous media: I Low f requency range[J]. Journal Acoust Soc Am ,1956, 28 (2): 168-178. [7] BOWEN R M. Compressible porous media models by use of the theory of mixtures[J]. Int J Engng Sci, 1982, 20: 697-735. [8] BOER R de. Theory of porous media: Highlights in the historical development and current state[]. Springer-Ver-lag, Berlin, Heidelberg, 2000, 23: 321-362. [9] SCHREFLER B A. Mechanics and thermodynamics of saturated/ unsaturated porous materials and quantitative solution[J]. Appl Mech Rev, 2002, 55: 351-388. [10] SCHREFLER B A, ZHAN X, SIMONI L. A coupled model for water flow, air flow and heat flow in deformable porous media[J]. Int J Num Meth Fluid Flow, 1995, 5: 531-547. [11] EDELMAN I,WILMANSKI K. Asymptotic analysis of surface waves at vacuum/porous medium and liquid/porous medium interfaces[J]. Continuum Mech Thermody, 2002, 14: 25-44. [12] 杨绪灿, 杨桂通, 徐秉业. 黏塑性力学概论[M]. 北京: 中国铁道出版社, 1985: 90-120. (YANG Xu-can, YANG Gui-tong, XU Bing-ye. Introduction on Visco-plasticity Mechanics[M]. Beijing: China Railway Publishing House, 1985: 90-120. (in Chinese)) [13] DUVAUT G, LIONS J L. Les inequations en mecanique et en physique. Dunod, Paris, France, 1972: 236-271. [14] OWEN D R J, HINTON E. Finite elements in plasticity: theory and practice[M]. Swansea, UK: Pineridge Press Limited, 1980: 431-465. [15] 詹美礼, 钱家欢, 陈绪禄. 软土流变特性试验及流变模型[J]. 岩土工程学报, 1993, 15(3): 54-62. (ZHAN Mei-li, QIAN Jia-huan, CHEN Xu-lu. Tests on rheological behavior of soft soil and rheologic model[J]. Chinese Jounal of Geotechnical Engineering, 1993, 15(3): 54-62. (in Chinese)) -
期刊类型引用(10)
1. 李勇，胡双杰，陈结，桂辉高，孙传猛. 不同断裂模式下层理方向对页岩断裂特性的影响. 采矿与安全工程学报. 2025(03): 684-695 . 
百度学术
2. 郝瑞卿，周玉国，郜昕玥，贾天枢，张彬伟，刘晓东. 层理角度对砂岩力学特性及断裂破坏规律影响研究. 矿业研究与开发. 2024(02): 103-109 . 百度学术
3. 李勇，胡双杰，桂辉高，孙传猛，甘涛，李银. 层理方向对含预制裂纹页岩Ⅰ型断裂特性的影响. 矿业安全与环保. 2024(01): 1-6 . 百度学术
4. 陈进帆，尚德磊，赵志宏，陈朝伟. 基于机器学习的含充填裂隙岩样断裂行为预测方法. 岩石力学与工程学报. 2023(S1): 3458-3472 . 百度学术
5. 王晓雷，李前程，李群，闫顺玺，王宏刚. 单轴荷载下层状玄武岩的破裂模式和声发射特征. 矿业研究与开发. 2023(08): 127-131 . 百度学术
6. 尚德磊，陈进帆，褚鹏. 岩石张拉裂缝与充填胶结裂隙的相互作用. 岩土力学. 2023(S1): 319-331 . 百度学术
7. 郑强强，徐颖，胡浩，钱佳威，宗琦，谢平. 单轴荷载作用下砂岩的破裂与速度结构层析成像. 岩土工程学报. 2021(06): 1069-1077 . 本站查看
8. 陈彦安，卞康，刘建，崔德山，李一冉. 非对称载荷下各向异性砂岩半圆弯曲断裂特性的离散元研究. 岩石力学与工程学报. 2021(07): 1412-1427 . 百度学术
9. 戴兵，单启伟，罗鑫尧，薛永明. 含孔洞岩石在静应力下的循环冲击试验研究. 黄金科学技术. 2020(04): 531-540 . 百度学术
10. 刁心宏，傅昱，洪鹏，于洋，丰光亮. 不同层理板岩破坏过程的声发射特征. 昆明理工大学学报(自然科学版). 2020(05): 116-123 . 百度学术
其他类型引用(13)
计量
- 文章访问数: 254
- HTML全文浏览量: 3
- PDF下载量: 160
- 被引次数: 23
下载:
