| 彭成,方凯,钟启明.沥青混合料复合结构层间稳定性破坏研究[J].南华大学学报(自然科学版),2022,(3):37~46.[PENG Cheng,FANG Kai,ZHONG Qiming.Study on Interlayer Stability Failure of Asphalt Mixture Composite Structure[J].Journal of University of South China(Science and Technology),2022,(3):37~46.] |
| 沥青混合料复合结构层间稳定性破坏研究 |
| Study on Interlayer Stability Failure of Asphalt Mixture Composite Structure |
| 投稿时间：2022-01-15 |
| DOI： |
| 中文关键词: 沥青混凝土 内聚力模型 层间破坏 准静态 应力分布 |
| 英文关键词:asphalt concrete cohesion model interlayer failure quasi static stress distribution |
| 基金项目:水利部土石坝破坏机理与防控技术重点实验室开放基金项目(YK319008);湖南省教育厅一般项目(20C1608) |
|
| 摘要点击次数: 285 |
| 全文下载次数: 177 |
| 中文摘要: |
| 为了定量描述沥青混合料复合结构的层间破坏过程,本研究基于双线性内聚力模型,建立了直接拉拔试验中圆柱形沥青混凝土的三维有限元模型,该模型采用显式准静态方法求解了收敛问题,并系统比较了准静态参数(网格、加载曲线、质量缩放和模拟拉拔速率)对计算效率和精度的影响。结果表明,当加载曲线类型为光滑线、模拟拉拔速率为试验的10倍且质量缩放为100时,模型计算结果与试验结果最为一致,在沥青混合料复合结构拉拔破坏过程中,层间界面的最大应力集中在环形区域。 |
| 英文摘要: |
| To quantitatively describe the interlayer failure process of asphalt mixture composite structure, a three-dimensional finite element model of cylindrical asphalt concrete in direct pull-out test was established based on bilinear cohesive force model. The convergence problem was solved by explicit quasi-static method. The effects of quasi-static parameters (mesh, loading curve, mass scaling and simulated drawing rate) on calculation efficiency and accuracy were systematically compared. The results show that when the loading curve type is smooth, the simulated drawing rate is 10 times of the test and the mass scale is 100, the model calculation results are most consistent with the test results. In the process of drawing failure of asphalt mixture composite structure, the maximum stress of the interlayer interface is concentrated in the ring region. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|