一种统一非饱和土水-力-气三相耦合本构理论模拟方法
PDF下载 (267)杜建行,桑琴扬,熊勇林.一种统一非饱和土水-力-气三相耦合本构理论模拟方法[J].宁波大学学报(理工版),2023,36(2):57-66.DOI:
DU Jianhang,SANG Qinyang,XIONG Yonglin.A unified method of soil water-force-air coupling constitutive model for unsaturated soil[J].Journal of Ningbo University(Natural Science & Engineering Edition),2023,36(2):57-66.DOI:
| Title: | A unified method of soil water-force-air coupling constitutive model for unsaturated soil |
| 作者: | 杜建行, 桑琴扬, 熊勇林 |
| Author(s): | DU Jianhang, SANG Qinyang, XIONG Yonglin |
| 关键词: | 非饱和土; 本构模型; 不排水不排气; 水-力-气耦合; 数值模拟 |
| Keywords: | unsaturated soil; constitutive model; undrained and unvented; water-force-air coupling; numerical simulation |
| 分类号: | TU411.5 |
| 文献标识码: | A |
| 摘要: | 非饱和土在不排水不排气条件下土体仍会发生变形, 因此非饱和土弹塑性本构理论模拟有必要考虑孔隙比的变化. 本文推导了不同排水排气条件下(不排水、排气, 不排水不排气, 排水排气)非饱和土弹塑性本构理论预测控制方程, 可用来预测非饱和土在不同排水排气条件下的力学特性行为. 通过与试验结果对比分析可知, 该方法能够较好地再现室内试验结果, 描述非饱和土在不同排水排气条件下的水-力-气耦合行为. |
| Abstract: | Unsaturated soils may still cause soil deformation under the undrained and unvented conditions. Therefore, it is necessary to consider the change of void ratio in the simulation of elastoplastic constitutive theory of unsaturated soil. This paper derives the predictive control equations of elastoplastic constitutive theory of unsaturated soil under different drainage and exhaust conditions (undrained and exhausted, undrained and unvented, drained and exhausted), which can be used to predict the mechanical behaviors of unsaturated soil under different drainage and exhaust conditions. Through comparative analysis with experimental results, it can be seen that this method can reproduce the experimental results well and describe the hydraulic coupling behavior of unsaturated soils under different drainage and exhaust conditions. |
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| 备注/Memo: | 收稿日期: 2022－10－13. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 宁波大学冲击与安全工程教育部重点实验室开放基金（CJ-20180110）. 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/第一作者: 杜建行（1996－）, 男, 山东德州人, 在读硕士研究生, 主要研究方向: 岩土数值计算. E-mail: 872404127@qq.com *通信作者: 熊勇林（1989－）, 男, 江西南昌人, 副教授, 主要研究方向: 岩土数值计算. E-mail: xiongyonglin@nbu.edu.cn |
