Zhang Yingmin, Yang Guang, Chen Wenwu, Sun Lizhi
CCCC First Harbor Consultants Co., Ltd., Tianjin 300222, China.
Department of Civil & Environmental Engineering, University of California, Irvine, CA 92697-2175, USA.
Materials (Basel). 2022 Sep 3;15(17):6124. doi: 10.3390/ma15176124.
While the macroscopic mechanical properties of earthen-site soils have undergone extensive experimental and modeling studies, few research efforts focus on the relationship between the overall mechanical behavior and micro-pore structure. We developed a microstructure-based finite element model to investigate the influence of micro-pore structure on the macroscopic mechanical behavior of earthen-site soils. Scanning electron microscopy images of the untreated and consolidated soils were processed to compare the changes in equivalent diameter, sphericity, and porosity of the soils after consolidation. According to the pore parameter range of the untreated and consolidated soils, the effects of micro-pores on the soil behavior are specifically conducted under both static and dynamic loads. The relationships between pore characteristics and stiffness, strength, and ultrasonic wave velocity are established.
虽然对土遗址土的宏观力学性能已进行了广泛的实验和建模研究，但很少有研究关注整体力学行为与微孔结构之间的关系。我们开发了一种基于微观结构的有限元模型，以研究微孔结构对土遗址土宏观力学行为的影响。对未处理和固结土的扫描电子显微镜图像进行处理，以比较固结后土的等效直径、球形度和孔隙率的变化。根据未处理和固结土的孔隙参数范围，具体研究了微孔在静态和动态荷载作用下对土体行为的影响。建立了孔隙特征与刚度、强度和超声波速度之间的关系。
