摘要
为探究基于离散元理论的沥青混凝土劈裂抗拉预测数值模拟效果,根据沥青混凝土的材料组成及特性,选择平行粘结接触模型,结合沥青混凝土的室内试验,进行参数标定,采用不同工程实际数据对模型进行验证,试验结果预测较好且可以模拟试件破坏的发展过程。进而采用该方法探讨了不同骨料粒径及沥青含量影响下的劈裂抗拉强度及破坏机理,揭示了骨料含量与表面积的变化为影响强度的主要因素。研究结果对沥青混凝土室内试验模拟预测及配合比选优有较好的指导意义与参考价值。
To explore the numerical simulation effect of asphalt concrete splitting tensile strength prediction based on discrete element theory,based on the material composition and characteristics of asphalt concrete and the results of indoor testing,the parallel bond contact model was selected and calibrated.The model was validated using actual data from different projects,and the test results were predicted to be more accurate and could simulate the development of specimen damage.The method was employed to investigate the effect of aggregate size and asphalt content on the split tensile strength and damage mechanism.The findings revealed that changes of aggregate content and surface area are the primary factors influencing strength.This result provides valuable guidance and a reference value for the prediction of asphalt concrete indoor test simulation and proportion selection.
作者
陈和源
冯涛
刘亮
杨武
王亚楠
CHEN He-yuan;FENG Tao;LIU Liang;YANG Wu;WANG Ya-nan(College of Hydraulic and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Hydraulic Engineering Geotechnical and Structural Engineering Technology Research Center,Urumqi 830052,China;XPCC Surveying&Designing Institute Group Co.,Ltd.,Urumqi 830052,China)
出处
《水电能源科学》
北大核心
2025年第10期101-104,共4页
Water Resources and Power
基金
新疆维吾尔自治区自然科学基金面上项目(2022D01A199)
新疆维吾尔自治区人才发展基金“天池英才”引进计划项目。
关键词
颗粒流
沥青混凝土
劈裂抗拉
离散元理论
particle flow
asphalt concrete
splitting tensile
discrete element theory
