冻土–加固砂土工布界面负幂乘函数模型研究
Negative Power Multiplication Function Model of the Frozen Soil-Reinforced Sand Geotextile Interface
DOI: 10.12677/ijm.2025.142007, PDF,   
作者: 刘博洋, 杨静宁, 庄 策：兰州理工大学理学院，甘肃 兰州；何鹏飞：兰州理工大学土木工程学院，甘肃 兰州
关键词: 冻土；界面；界面粗糙度；本构模型；Frozen Soil； Interface； Interface Roughness； Constitutive Model
摘要: 冻土对温度的敏感影响着与其他材料界面的接触关系。土工合成材料由于其优异的物理力学性能，在土木工程、环境工程和水利工程等方面得到了大量应用，冻土与结构界面的模型旨在探究这种复杂界面的相互作用机理，该模型综合考虑温度效应、界面粗糙度、力学性质等影响因素，来描述界面的应力–应变关系、剪切强度等特性。根据接触面关节粗糙度系数，结合Mohr-Coulomb准则，应用了一种估算裂缝的峰值抗剪强度的方法，得到关于表面粗糙度与峰值剪切强度的参数方程。在现有本构模型的基础上，考虑温度、加固砂土工布表面粗糙度等参数，建立土–加固砂土工布界面剪切力学特性的模型。通过试验数据与理论模型对比，验证模型的有效性，对冻土区基础工程建设具有指导和参考意义。
Abstract: The sensitivity of frozen soil to temperature affects its contact relationship with the interfaces of other materials. Due to their excellent physical and mechanical properties, geosynthetics have been widely applied in civil engineering, environmental engineering, hydraulic engineering, etc. The model of the interface between frozen soil and structures aims to explore the interaction mechanism of such complex interfaces. This model comprehensively considers influencing factors such as the temperature effect, interface roughness, and mechanical properties to describe the characteristics of the interface, such as the stress-strain relationship and shear strength. According to the joint roughness coefficient of the contact surface and combined with the Mohr-Coulomb criterion, a method for estimating the peak shear strength of cracks is applied, and a parametric equation regarding the surface roughness and peak shear strength is obtained. Based on the existing constitutive models, a model of the shear mechanical properties of the interface between soil and reinforced sand geotextile is established, taking into account parameters such as temperature and the surface roughness of the reinforced sand geotextile. By comparing the test data with the theoretical model, the effectiveness of the model is verified, which has guiding and reference significance for the construction of foundation engineering in frozen soil areas.
文章引用：刘博洋, 杨静宁, 何鹏飞, 庄策. 冻土–加固砂土工布界面负幂乘函数模型研究[J]. 力学研究, 2025, 14(2): 67-76. https://doi.org/10.12677/ijm.2025.142007

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