摘要
为进一步深入理解格栅加筋道砟界面宏细观力学响应的关联性,采用离散元法对格栅加筋道砟拉拔试验进行了数值仿真,并基于宏观拉拔阻力发展及筋材应力-应变规律,对颗粒体系能量耗散机制进行了详细的分析。结合能量演化特征量化了拉拔荷载下土工格栅沿纵肋方向的应力损失。
In order to further understand the relevance between macroscopic and microcosmic mechanical response of the grille reinforced ballast interface, the drawing test of grille reinforced ballast was simulated numerically by discrete element method, and based on the macro-development of the drawing resistance and the stress-strain of the grille, the energy consumption mechanism of the granular system was analyzed in detail. Taking the energy evolution characteristics into account, the stress loss of the grille along the longitudinal rib under the drawing load was quantified.
作者
梁东方
LIANG Dong-fang(Yangquan Infrastructure Investment Co.,Ltd.of China State Construction Engineering Corporation,Yangquan,Shanxi 045000,China)
出处
《山西交通科技》
2020年第5期82-84,94,共4页
Shanxi Science & Technology of Transportation
关键词
离散元法
数值模拟
界面特性
加筋道砟
拉拔荷载
discrete element method
numerical simulation
interface properties
reinforced ballast
drawing load
